| /* Implement classes and message passing for Objective C. |
| Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, |
| 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
| Contributed by Steve Naroff. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* Purpose: This module implements the Objective-C 4.0 language. |
| |
| compatibility issues (with the Stepstone translator): |
| |
| - does not recognize the following 3.3 constructs. |
| @requires, @classes, @messages, = (...) |
| - methods with variable arguments must conform to ANSI standard. |
| - tagged structure definitions that appear in BOTH the interface |
| and implementation are not allowed. |
| - public/private: all instance variables are public within the |
| context of the implementation...I consider this to be a bug in |
| the translator. |
| - statically allocated objects are not supported. the user will |
| receive an error if this service is requested. |
| |
| code generation `options': |
| |
| */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "tree.h" |
| #include "rtl.h" |
| #include "tm_p.h" |
| #include "expr.h" |
| |
| #ifdef OBJCPLUS |
| #include "cp-tree.h" |
| #else |
| #include "c-tree.h" |
| #endif |
| |
| #include "c-common.h" |
| #include "c-pragma.h" |
| #include "flags.h" |
| #include "langhooks.h" |
| #include "objc-act.h" |
| #include "input.h" |
| #include "except.h" |
| #include "function.h" |
| #include "output.h" |
| #include "toplev.h" |
| #include "ggc.h" |
| #include "varray.h" |
| #include "debug.h" |
| #include "target.h" |
| #include "diagnostic.h" |
| #include "cgraph.h" |
| #include "tree-iterator.h" |
| #include "libfuncs.h" |
| #include "hashtab.h" |
| #include "langhooks-def.h" |
| /* APPLE LOCAL optimization pragmas 3124235/3420242 */ |
| #include "opts.h" |
| #ifdef ENABLE_LLVM |
| #include "llvm.h" /* for reset_initializer_llvm */ |
| #endif |
| |
| #define OBJC_VOID_AT_END void_list_node |
| |
| /* APPLE LOCAL radar 4506893 */ |
| static bool in_objc_property_setter_name_context = false; |
| /* APPLE LOCAL begin mainline */ |
| static unsigned int should_call_super_dealloc = 0; |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4757423 */ |
| static bool should_call_super_finalize = false; |
| /* APPLE LOCAL end radar 4757423 */ |
| |
| /* When building Objective-C++, we are not linking against the C front-end |
| and so need to replicate the C tree-construction functions in some way. */ |
| #ifdef OBJCPLUS |
| #define OBJCP_REMAP_FUNCTIONS |
| #include "objcp-decl.h" |
| #endif /* OBJCPLUS */ |
| |
| /* This is the default way of generating a method name. */ |
| /* I am not sure it is really correct. |
| Perhaps there's a danger that it will make name conflicts |
| if method names contain underscores. -- rms. */ |
| #ifndef OBJC_GEN_METHOD_LABEL |
| #define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME, NUM) \ |
| do { \ |
| char *temp; \ |
| sprintf ((BUF), "_%s_%s_%s_%s", \ |
| ((IS_INST) ? "i" : "c"), \ |
| (CLASS_NAME), \ |
| ((CAT_NAME)? (CAT_NAME) : ""), \ |
| (SEL_NAME)); \ |
| for (temp = (BUF); *temp; temp++) \ |
| if (*temp == ':') *temp = '_'; \ |
| } while (0) |
| #endif |
| /* APPLE LOCAL begin radar 4862848 */ |
| #ifndef OBJC_FLAG_OBJC_ABI |
| #define OBJC_FLAG_OBJC_ABI \ |
| do { if (flag_objc_abi == -1) \ |
| flag_objc_abi = 1; \ |
| } while (0) |
| #endif |
| /* APPLE LOCAL end radar 4862848 */ |
| /* APPLE LOCAL begin radar 5023725 */ |
| #ifndef OBJC_FLAG_ZEROCOST_EXCEPTIONS |
| #define OBJC_FLAG_ZEROCOST_EXCEPTIONS |
| #endif |
| /* LLVM LOCAL begin */ |
| /* APPLE LOCAL begin radar 4590191 */ |
| #ifndef OBJC_FLAG_SJLJ_EXCEPTIONS |
| #define OBJC_FLAG_SJLJ_EXCEPTIONS |
| #endif |
| /* APPLE LOCAL end radar 4590191 */ |
| /* LLVM LOCAL end */ |
| /* APPLE LOCAL end radar 5023725 */ |
| /* APPLE LOCAL begin radar 4531086 */ |
| #ifndef OBJC_WARN_OBJC2_FEATURES |
| #define OBJC_WARN_OBJC2_FEATURES(MESSAGE) |
| #endif |
| /* APPLE LOCAL end radar 4531086 */ |
| |
| /* These need specifying. */ |
| #ifndef OBJC_FORWARDING_STACK_OFFSET |
| #define OBJC_FORWARDING_STACK_OFFSET 0 |
| #endif |
| |
| #ifndef OBJC_FORWARDING_MIN_OFFSET |
| #define OBJC_FORWARDING_MIN_OFFSET 0 |
| #endif |
| |
| /* Set up for use of obstacks. */ |
| |
| #include "obstack.h" |
| |
| /* This obstack is used to accumulate the encoding of a data type. */ |
| static struct obstack util_obstack; |
| |
| /* This points to the beginning of obstack contents, so we can free |
| the whole contents. */ |
| char *util_firstobj; |
| |
| /* The version identifies which language generation and runtime |
| the module (file) was compiled for, and is recorded in the |
| module descriptor. */ |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| /* Bump version number to 7 */ |
| /* APPLE LOCAL mainline */ |
| #define OBJC_VERSION (flag_next_runtime ? 7 : 8) |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| #define PROTOCOL_VERSION 2 |
| /* APPLE LOCAL radar 4533974 - ObjC newprotocol */ |
| #define NEW_PROTOCOL_VERSION 3 |
| |
| /* (Decide if these can ever be validly changed.) */ |
| #define OBJC_ENCODE_INLINE_DEFS 0 |
| #define OBJC_ENCODE_DONT_INLINE_DEFS 1 |
| |
| /*** Private Interface (procedures) ***/ |
| |
| /* Used by compile_file. */ |
| |
| static void init_objc (void); |
| static void finish_objc (void); |
| |
| /* Code generation. */ |
| |
| /* APPLE LOCAL begin mainline */ |
| static tree objc_build_constructor (tree, tree); |
| static tree build_objc_method_call (int, tree, tree, tree, tree); |
| static tree get_proto_encoding (tree); |
| static tree lookup_interface (tree); |
| static tree objc_add_static_instance (tree, tree); |
| /* APPLE LOCAL end mainline */ |
| |
| static tree start_class (enum tree_code, tree, tree, tree); |
| static tree continue_class (tree); |
| static void finish_class (tree); |
| static void start_method_def (tree); |
| #ifdef OBJCPLUS |
| static void objc_start_function (tree, tree, tree, tree); |
| #else |
| static void objc_start_function (tree, tree, tree, struct c_arg_info *); |
| #endif |
| static tree start_protocol (enum tree_code, tree, tree); |
| static tree build_method_decl (enum tree_code, tree, tree, tree); |
| /* APPLE LOCAL C* language */ |
| static tree objc_add_method (tree, tree, int, int); |
| static tree add_instance_variable (tree, int, tree); |
| static tree build_ivar_reference (tree); |
| static tree is_ivar (tree, tree); |
| /* APPLE LOCAL begin mainline */ |
| /* APPLE LOCAL end mainline */ |
| |
| /* APPLE LOCAL begin objc new property */ |
| static bool objc_lookup_protocol (tree, tree, tree, bool); |
| static int objc_is_gcable_type (tree); |
| static tree lookup_method_static (tree, tree, int, bool); |
| /* APPLE LOCAL radar 4817072 */ |
| static void objc_lookup_property_ivar (tree, tree); |
| /* APPLE LOCAL end objc new property */ |
| static void build_objc_exception_stuff (void); |
| static void build_next_objc_exception_stuff (void); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* APPLE LOCAL radar 4431864 */ |
| static void objc_set_global_decl_fields (tree); |
| /* APPLE LOCAL ObjC GC */ |
| static int objc_is_strong_p (tree); |
| static int objc_is_gcable_p (tree); |
| |
| /* We only need the following for ObjC; ObjC++ will use C++'s definition |
| of DERIVED_FROM_P. */ |
| #ifndef OBJCPLUS |
| static bool objc_derived_from_p (tree, tree); |
| #define DERIVED_FROM_P(PARENT, CHILD) objc_derived_from_p (PARENT, CHILD) |
| #endif |
| /* APPLE LOCAL begin C* language */ |
| /* code removed */ |
| /* APPLE LOCAL end C* language */ |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| static char *objc_build_property_setter_name (tree, bool); |
| static int match_proto_with_proto (tree, tree, int); |
| static char * objc_build_property_ivar_name (tree); |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| static void objc_xref_basetypes (tree, tree); |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| static void build_v2_class_template (void); |
| static void build_v2_protocol_template (void); |
| static void build_message_ref_template (void); |
| static tree build_v2_build_objc_method_call (int, tree, tree, tree, tree, bool); |
| /* APPLE LOCAL radar 4695109 */ |
| static void build_v2_protocol_reference (tree); |
| /* APPLE LOCAL radar 5153561 */ |
| static void init_UOBJC2_EHTYPE_decls (void); |
| static void create_ivar_offset_name (char *, tree, tree); |
| static void build_v2_category_template (void); |
| /* APPLE LOCAL radar 4533974 - ObjC new protocol */ |
| static tree build_protocollist_reference_decl (void); |
| static void objc_add_to_category_list_chain (tree); |
| static void objc_add_to_nonlazy_category_list_chain (tree); |
| /* APPLE LOCAL begin radar 4441049 */ |
| static void hash_name_enter (hash *, tree); |
| static tree hash_name_lookup (hash *, tree); |
| /* APPLE LOCAL end radar 4441049 */ |
| /* APPLE LOCAL end ObjC new abi */ |
| /* APPLE LOCAL C* language */ |
| static void build_objc_fast_enum_state_type (void); |
| |
| static void build_class_template (void); |
| static void build_selector_template (void); |
| static void build_category_template (void); |
| static void build_super_template (void); |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL ObjC new abi - radar 4695109 */ |
| static tree build_protocol_initializer (tree, tree, tree, tree, tree, bool, tree, tree, tree); |
| /* APPLE LOCAL mainline */ |
| static tree get_class_ivars (tree, bool); |
| static tree generate_protocol_list (tree); |
| static void build_protocol_reference (tree); |
| |
| /* APPLE LOCAL begin mainline */ |
| #ifdef OBJCPLUS |
| static void objc_generate_cxx_cdtors (void); |
| #endif |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4359757 */ |
| static size_t hash_func (tree); |
| static void hash_add_attr (hash, tree); |
| static hash hash_ident_lookup (hash *, tree); |
| static hash hash_ident_enter (hash *, tree); |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| static void objc_decl_method_attributes (tree*, tree, int); |
| static const char *synth_id_with_class_suffix (const char *, tree); |
| |
| /* APPLE LOCAL begin radar 4548636 */ |
| static void objc_warn_on_class_attributes (tree, bool); |
| static void objc_attach_attrs_to_type (tree, tree); |
| /* APPLE LOCAL end radar 4548636 */ |
| /* APPLE LOCAL radar 4664707 */ |
| static tree objc_create_named_tmp_var (tree, const char *); |
| /* APPLE LOCAL radar 2848255 */ |
| static tree objc2_eh_runtime_type (tree); |
| /* APPLE LOCAL radar 4982951 */ |
| static tree objc_v2_ivar_reference (tree); |
| |
| /* APPLE LOCAL radar 5040740 */ |
| static tree lookup_nested_method (tree, tree); |
| |
| /* Hash tables to manage the global pool of method prototypes. */ |
| |
| hash *nst_method_hash_list = 0; |
| hash *cls_method_hash_list = 0; |
| /* APPLE LOCAL begin radar 4359757 */ |
| hash *class_nst_method_hash_list = 0; |
| hash *class_cls_method_hash_list = 0; |
| hash *class_names_hash_list = 0; |
| hash *meth_var_names_hash_list = 0; |
| hash *meth_var_types_hash_list = 0; |
| hash *prop_names_attr_hash_list = 0; |
| hash *sel_ref_hash_list = 0; |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* APPLE LOCAL begin radar 4345837 */ |
| hash *cls_name_hash_list = 0; |
| hash *als_name_hash_list = 0; |
| /* APPLE LOCAL end radar 4345837 */ |
| |
| /* APPLE LOCAL radar 4441049 */ |
| hash *ivar_offset_hash_list = 0; |
| |
| /* APPLE LOCAL begin radar 4345837 */ |
| static void hash_class_name_enter (hash *, tree, tree); |
| static hash hash_class_name_lookup (hash *, tree); |
| /* APPLE LOCAL end radar 4345837 */ |
| /* APPLE LOCAL begin mainline */ |
| static hash hash_lookup (hash *, tree); |
| static tree lookup_method (tree, tree); |
| static inline tree lookup_category (tree, tree); |
| |
| enum string_section |
| { |
| class_names, /* class, category, protocol, module names */ |
| meth_var_names, /* method and variable names */ |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| meth_var_types, /* method and variable type descriptors */ |
| prop_names_attr /* property names and their attributes. */ |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| }; |
| |
| static tree add_objc_string (tree, enum string_section); |
| static tree build_objc_string_decl (enum string_section); |
| static void build_selector_table_decl (void); |
| |
| /* Protocol additions. */ |
| |
| static tree lookup_protocol (tree); |
| /* APPLE LOCAL radar 4398221 */ |
| static tree lookup_and_install_protocols (tree, bool); |
| /* APPLE LOCAL radar 4869979 */ |
| static int conforms_to_protocol (tree, tree); |
| |
| /* Type encoding. */ |
| |
| static void encode_type_qualifiers (tree); |
| static void encode_type (tree, int, int); |
| static void encode_field_decl (tree, int, int); |
| |
| #ifdef OBJCPLUS |
| static void really_start_method (tree, tree); |
| #else |
| static void really_start_method (tree, struct c_arg_info *); |
| #endif |
| static int comp_proto_with_proto (tree, tree, int); |
| /* APPLE LOCAL end mainline */ |
| static tree get_arg_type_list (tree, int, int); |
| /* APPLE LOCAL 4209854 */ |
| static tree objc_decay_parm_type (tree); |
| static void objc_push_parm (tree); |
| #ifdef OBJCPLUS |
| static tree objc_get_parm_info (int); |
| #else |
| static struct c_arg_info *objc_get_parm_info (int); |
| #endif |
| /* APPLE LOCAL begin mainline */ |
| /* APPLE LOCAL end mainline */ |
| |
| /* Utilities for debugging and error diagnostics. */ |
| |
| static void warn_with_method (const char *, int, tree); |
| /* APPLE LOCAL begin mainline */ |
| static char *gen_type_name (tree); |
| static char *gen_type_name_0 (tree); |
| static char *gen_method_decl (tree); |
| static char *gen_declaration (tree); |
| |
| /* Everything else. */ |
| |
| static tree start_var_decl (tree, const char *); |
| static void finish_var_decl (tree, tree); |
| static tree create_field_decl (tree, const char *); |
| static void add_class_reference (tree); |
| static void build_protocol_template (void); |
| static tree encode_method_prototype (tree); |
| static void generate_classref_translation_entry (tree); |
| static void handle_class_ref (tree); |
| static void mark_referenced_methods (void); |
| static void generate_objc_image_info (void); |
| /* APPLE LOCAL end mainline */ |
| |
| /*** Private Interface (data) ***/ |
| |
| /* Reserved tag definitions. */ |
| |
| #define OBJECT_TYPEDEF_NAME "id" |
| #define CLASS_TYPEDEF_NAME "Class" |
| |
| #define TAG_OBJECT "objc_object" |
| #define TAG_CLASS "objc_class" |
| #define TAG_SUPER "objc_super" |
| #define TAG_SELECTOR "objc_selector" |
| |
| #define UTAG_CLASS "_objc_class" |
| #define UTAG_IVAR "_objc_ivar" |
| #define UTAG_IVAR_LIST "_objc_ivar_list" |
| #define UTAG_METHOD "_objc_method" |
| #define UTAG_METHOD_LIST "_objc_method_list" |
| #define UTAG_CATEGORY "_objc_category" |
| #define UTAG_MODULE "_objc_module" |
| #define UTAG_SYMTAB "_objc_symtab" |
| #define UTAG_SUPER "_objc_super" |
| #define UTAG_SELECTOR "_objc_selector" |
| |
| #define UTAG_PROTOCOL "_objc_protocol" |
| #define UTAG_METHOD_PROTOTYPE "_objc_method_prototype" |
| #define UTAG_METHOD_PROTOTYPE_LIST "_objc__method_prototype_list" |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| #define UTAG_CLASS_EXT "_objc_class_ext" |
| #define UTAG_PROPERTY_LIST "_prop_list_t" |
| #define UTAG_PROTOCOL_EXT "_objc_protocol_extension" |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| /* Note that the string object global name is only needed for the |
| NeXT runtime. */ |
| #define STRING_OBJECT_GLOBAL_FORMAT "_%sClassReference" |
| /* APPLE LOCAL radar 4719165 */ |
| #define STRING_V2_OBJECT_GLOBAL_FORMAT "OBJC_CLASS_$_%s" |
| /* APPLE LOCAL radar 4894756 */ |
| #define STRING_V2_IVAR_OFFSET_PREFIX "OBJC_IVAR_$_" |
| /* APPLE LOCAL radar 5008110 */ |
| #define STRING_V2_OBJC_EHTYPE_PREFIX "OBJC_EHTYPE_$" |
| |
| #define PROTOCOL_OBJECT_CLASS_NAME "Protocol" |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| #define UTAG_V2_CLASS "_class_t" |
| #define UTAG_V2_CLASS_RO "_class_ro_t" |
| #define UTAG_V2_PROTOCOL_LIST "_protocol_list_t" |
| #define UTAG_V2_PROTOCOL "_protocol_t" |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| static const char *TAG_GETCLASS; |
| static const char *TAG_GETMETACLASS; |
| static const char *TAG_MSGSEND; |
| static const char *TAG_MSGSENDSUPER; |
| /* The NeXT Objective-C messenger may have two extra entry points, for use |
| when returning a structure. */ |
| static const char *TAG_MSGSEND_STRET; |
| static const char *TAG_MSGSENDSUPER_STRET; |
| static const char *default_constant_string_class_name; |
| /* APPLE LOCAL radar 4666559 */ |
| static const struct gcc_debug_hooks *save_default_debug_hooks; |
| |
| /* Runtime metadata flags. */ |
| #define CLS_FACTORY 0x0001L |
| #define CLS_META 0x0002L |
| /* APPLE LOCAL radar 5142207 */ |
| #define IS_CLS_META(X) ((X & 0x0003) == CLS_META) |
| /* APPLE LOCAL mainline */ |
| #define CLS_HAS_CXX_STRUCTORS 0x2000L |
| /* APPLE LOCAL radar 4923634 */ |
| #define OBJC2_CLS_HAS_CXX_STRUCTORS 0x0004L |
| /* APPLE LOCAL begin radar 5142207 */ |
| #define CLS_HIDDEN 0x20000 |
| #define OBJC2_CLS_HIDDEN 0x10 |
| /* APPLE LOCAL end radar 5142207 */ |
| |
| #define OBJC_MODIFIER_STATIC 0x00000001 |
| #define OBJC_MODIFIER_FINAL 0x00000002 |
| #define OBJC_MODIFIER_PUBLIC 0x00000004 |
| #define OBJC_MODIFIER_PRIVATE 0x00000008 |
| #define OBJC_MODIFIER_PROTECTED 0x00000010 |
| #define OBJC_MODIFIER_NATIVE 0x00000020 |
| #define OBJC_MODIFIER_SYNCHRONIZED 0x00000040 |
| #define OBJC_MODIFIER_ABSTRACT 0x00000080 |
| #define OBJC_MODIFIER_VOLATILE 0x00000100 |
| #define OBJC_MODIFIER_TRANSIENT 0x00000200 |
| #define OBJC_MODIFIER_NONE_SPECIFIED 0x80000000 |
| |
| /* NeXT-specific tags. */ |
| |
| #define TAG_MSGSEND_NONNIL "objc_msgSendNonNil" |
| #define TAG_MSGSEND_NONNIL_STRET "objc_msgSendNonNil_stret" |
| #define TAG_EXCEPTIONEXTRACT "objc_exception_extract" |
| #define TAG_EXCEPTIONTRYENTER "objc_exception_try_enter" |
| #define TAG_EXCEPTIONTRYEXIT "objc_exception_try_exit" |
| #define TAG_EXCEPTIONMATCH "objc_exception_match" |
| #define TAG_EXCEPTIONTHROW "objc_exception_throw" |
| #define TAG_SYNCENTER "objc_sync_enter" |
| #define TAG_SYNCEXIT "objc_sync_exit" |
| #define TAG_SETJMP "_setjmp" |
| #define UTAG_EXCDATA "_objc_exception_data" |
| /* APPLE LOCAL radar 4280641 */ |
| #define TAG_MSGSEND_FPRET "objc_msgSend_fpret" |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| #define TAG_ASSIGN_WEAK "objc_assign_weak" |
| #define TAG_READ_WEAK "objc_read_weak" |
| /* APPLE LOCAL end radar 4426814 */ |
| |
| /* APPLE LOCAL begin mainline */ |
| #define TAG_ASSIGNIVAR "objc_assign_ivar" |
| #define TAG_ASSIGNGLOBAL "objc_assign_global" |
| #define TAG_ASSIGNSTRONGCAST "objc_assign_strongCast" |
| |
| /* Branch entry points. All that matters here are the addresses; |
| functions with these names do not really exist in libobjc. */ |
| |
| #define TAG_MSGSEND_FAST "objc_msgSend_Fast" |
| #define TAG_ASSIGNIVAR_FAST "objc_assign_ivar_Fast" |
| |
| /* APPLE LOCAL begin radar 4590221 */ |
| #ifndef OFFS_MSGSEND_FAST |
| #define OFFS_MSGSEND_FAST 0 |
| #endif |
| #ifndef OFFS_ASSIGNIVAR_FAST |
| #define OFFS_ASSIGNIVAR_FAST 0 |
| #endif |
| /* APPLE LOCAL end radar 4590221 */ |
| |
| #define TAG_CXX_CONSTRUCT ".cxx_construct" |
| #define TAG_CXX_DESTRUCT ".cxx_destruct" |
| /* APPLE LOCAL end mainline */ |
| |
| /* GNU-specific tags. */ |
| |
| #define TAG_EXECCLASS "__objc_exec_class" |
| #define TAG_GNUINIT "__objc_gnu_init" |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Flags for lookup_method_static(). */ |
| #define OBJC_LOOKUP_CLASS 1 /* Look for class methods. */ |
| #define OBJC_LOOKUP_NO_SUPER 2 /* Do not examine superclasses. */ |
| /* APPLE LOCAL end mainline */ |
| |
| /* The OCTI_... enumeration itself is in objc/objc-act.h. */ |
| tree objc_global_trees[OCTI_MAX]; |
| |
| static void handle_impent (struct imp_entry *); |
| |
| struct imp_entry *imp_list = 0; |
| int imp_count = 0; /* `@implementation' */ |
| int cat_count = 0; /* `@category' */ |
| |
| enum tree_code objc_inherit_code; |
| int objc_public_flag; |
| |
| /* APPLE LOCAL C* language */ |
| static int objc_method_optional_flag = 0; |
| /* APPLE LOCAL begin C* property (Radar 4436866, 4591909) */ |
| static bool property_readonly; |
| static bool property_bycopy; |
| static bool property_byref; |
| static bool property_dynamic; |
| static tree property_getter; |
| static tree property_setter; |
| static tree property_ivar; |
| /* APPLE LOCAL radar 4621020 */ |
| static bool property_weak; |
| /* APPLE LOCAL end C* property (Radar 4436866, 4591909) */ |
| /* APPLE LOCAL begin objc new property */ |
| static bool property_readwrite; |
| static bool property_assign; |
| static bool property_retain; |
| static bool property_copy; |
| /* APPLE LOCAL end objc new property */ |
| /* APPLE LOCAL radar 4947014 - objc atomic property */ |
| static bool property_atomic; |
| /* Use to generate method labels. */ |
| static int method_slot = 0; |
| |
| /* APPLE LOCAL begin radar 4291785 */ |
| static int objc_collecting_ivars = 0; |
| /* APPLE LOCAL end radar 4291785 */ |
| |
| #define BUFSIZE 1024 |
| |
| static char *errbuf; /* Buffer for error diagnostics */ |
| |
| /* Data imported from tree.c. */ |
| |
| extern enum debug_info_type write_symbols; |
| |
| /* Data imported from toplev.c. */ |
| |
| extern const char *dump_base_name; |
| |
| static int flag_typed_selectors; |
| |
| /* Store all constructed constant strings in a hash table so that |
| they get uniqued properly. */ |
| |
| struct string_descriptor GTY(()) |
| { |
| /* The literal argument . */ |
| tree literal; |
| |
| /* The resulting constant string. */ |
| tree constructor; |
| }; |
| |
| static GTY((param_is (struct string_descriptor))) htab_t string_htab; |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Store the EH-volatilized types in a hash table, for easy retrieval. */ |
| struct volatilized_type GTY(()) |
| { |
| tree type; |
| }; |
| |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* code removed */ |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| /* APPLE LOCAL end mainline */ |
| FILE *gen_declaration_file; |
| |
| /* APPLE LOCAL begin radar 5002848 */ |
| /* Tells "encode_pointer" that we are encoding for a property type. */ |
| static int generating_property_type_encoding = 0; |
| /* APPLE LOCAL end radar 5002848 */ |
| |
| /* Tells "encode_pointer/encode_aggregate" whether we are generating |
| type descriptors for instance variables (as opposed to methods). |
| Type descriptors for instance variables contain more information |
| than methods (for static typing and embedded structures). */ |
| |
| static int generating_instance_variables = 0; |
| |
| /* Some platforms pass small structures through registers versus |
| through an invisible pointer. Determine at what size structure is |
| the transition point between the two possibilities. */ |
| |
| static void |
| generate_struct_by_value_array (void) |
| { |
| tree type; |
| tree field_decl, field_decl_chain; |
| int i, j; |
| int aggregate_in_mem[32]; |
| int found = 0; |
| |
| /* Presumably no platform passes 32 byte structures in a register. */ |
| for (i = 1; i < 32; i++) |
| { |
| char buffer[5]; |
| |
| /* Create an unnamed struct that has `i' character components */ |
| type = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| strcpy (buffer, "c1"); |
| field_decl = create_field_decl (char_type_node, |
| buffer); |
| field_decl_chain = field_decl; |
| |
| for (j = 1; j < i; j++) |
| { |
| sprintf (buffer, "c%d", j + 1); |
| field_decl = create_field_decl (char_type_node, |
| buffer); |
| chainon (field_decl_chain, field_decl); |
| } |
| finish_struct (type, field_decl_chain, NULL_TREE); |
| |
| aggregate_in_mem[i] = aggregate_value_p (type, 0); |
| if (!aggregate_in_mem[i]) |
| found = 1; |
| } |
| |
| /* We found some structures that are returned in registers instead of memory |
| so output the necessary data. */ |
| if (found) |
| { |
| for (i = 31; i >= 0; i--) |
| if (!aggregate_in_mem[i]) |
| break; |
| printf ("#define OBJC_MAX_STRUCT_BY_VALUE %d\n\n", i); |
| |
| /* The first member of the structure is always 0 because we don't handle |
| structures with 0 members */ |
| printf ("static int struct_forward_array[] = {\n 0"); |
| |
| for (j = 1; j <= i; j++) |
| printf (", %d", aggregate_in_mem[j]); |
| printf ("\n};\n"); |
| } |
| |
| exit (0); |
| } |
| |
| bool |
| objc_init (void) |
| { |
| /* APPLE LOCAL radar 4862848 */ |
| OBJC_FLAG_OBJC_ABI; |
| /* APPLE LOCAL begin radar 4531086 */ |
| if (flag_objc_abi == 2) |
| OBJC_WARN_OBJC2_FEATURES ("the new objc abi"); |
| /* APPLE LOCAL end radar 4531086 */ |
| #ifdef OBJCPLUS |
| if (cxx_init () == false) |
| #else |
| if (c_objc_common_init () == false) |
| #endif |
| return false; |
| |
| #ifndef USE_MAPPED_LOCATION |
| /* Force the line number back to 0; check_newline will have |
| raised it to 1, which will make the builtin functions appear |
| not to be built in. */ |
| input_line = 0; |
| #endif |
| |
| /* If gen_declaration desired, open the output file. */ |
| if (flag_gen_declaration) |
| { |
| register char * const dumpname = concat (dump_base_name, ".decl", NULL); |
| gen_declaration_file = fopen (dumpname, "w"); |
| if (gen_declaration_file == 0) |
| fatal_error ("can't open %s: %m", dumpname); |
| free (dumpname); |
| } |
| |
| if (flag_next_runtime) |
| { |
| TAG_GETCLASS = "objc_getClass"; |
| TAG_GETMETACLASS = "objc_getMetaClass"; |
| TAG_MSGSEND = "objc_msgSend"; |
| TAG_MSGSENDSUPER = "objc_msgSendSuper"; |
| TAG_MSGSEND_STRET = "objc_msgSend_stret"; |
| TAG_MSGSENDSUPER_STRET = "objc_msgSendSuper_stret"; |
| default_constant_string_class_name = "NSConstantString"; |
| /* APPLE LOCAL begin radar 4810609 */ |
| if (flag_objc_gc_only) |
| flag_objc_gc = 1; |
| /* APPLE LOCAL end radar 4810609 */ |
| /* APPLE LOCAL begin radar 4949034 */ |
| #ifdef OBJCPLUS |
| if (flag_objc_abi == 2) |
| { |
| /* In objc2 abi -fobjc-call-cxx-cdtors in on by default. */ |
| if (flag_objc_call_cxx_cdtors == -1) |
| flag_objc_call_cxx_cdtors = 1; |
| } |
| else if (flag_objc_call_cxx_cdtors == -1) |
| flag_objc_call_cxx_cdtors = 0; |
| #endif |
| /* APPLE LOCAL end radar 4949034 */ |
| } |
| else |
| { |
| TAG_GETCLASS = "objc_get_class"; |
| TAG_GETMETACLASS = "objc_get_meta_class"; |
| TAG_MSGSEND = "objc_msg_lookup"; |
| TAG_MSGSENDSUPER = "objc_msg_lookup_super"; |
| /* GNU runtime does not provide special functions to support |
| structure-returning methods. */ |
| default_constant_string_class_name = "NXConstantString"; |
| flag_typed_selectors = 1; |
| } |
| |
| init_objc (); |
| |
| /* APPLE LOCAL begin radar 2848255 - radar 5153561 */ |
| #ifdef OBJCPLUS |
| if (flag_objc_zerocost_exceptions) |
| { |
| lang_eh_runtime_type = objc2_eh_runtime_type; |
| init_UOBJC2_EHTYPE_decls (); |
| } |
| #endif |
| /* APPLE LOCAL end radar 2848255 - radar 5153561 */ |
| if (print_struct_values) |
| generate_struct_by_value_array (); |
| |
| return true; |
| } |
| |
| void |
| objc_finish_file (void) |
| { |
| mark_referenced_methods (); |
| |
| #ifdef OBJCPLUS |
| /* We need to instantiate templates _before_ we emit ObjC metadata; |
| if we do not, some metadata (such as selectors) may go missing. */ |
| /* APPLE LOCAL radar 4439126 */ |
| cp_finish_file (); |
| #endif |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Finalize Objective-C runtime data. No need to generate tables |
| and code if only checking syntax, or if generating a PCH file. */ |
| if (!flag_syntax_only && !pch_file) |
| finish_objc (); |
| /* APPLE LOCAL end mainline */ |
| |
| if (gen_declaration_file) |
| fclose (gen_declaration_file); |
| /* APPLE LOCAL radar 4439126 */ |
| /* code removed. */ |
| } |
| |
| /* Return the first occurrence of a method declaration corresponding |
| to sel_name in rproto_list. Search rproto_list recursively. |
| If is_class is 0, search for instance methods, otherwise for class |
| methods. */ |
| static tree |
| lookup_method_in_protocol_list (tree rproto_list, tree sel_name, |
| int is_class) |
| { |
| tree rproto, p; |
| tree fnd = 0; |
| |
| for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) |
| { |
| p = TREE_VALUE (rproto); |
| |
| if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) |
| { |
| /* APPLE LOCAL begin radar 4550413 */ |
| fnd = lookup_method (is_class |
| ? PROTOCOL_CLS_METHODS (p) |
| : PROTOCOL_NST_METHODS (p), sel_name); |
| if (!fnd) |
| fnd = lookup_method (is_class |
| ? PROTOCOL_OPTIONAL_CLS_METHODS (p) |
| : PROTOCOL_OPTIONAL_NST_METHODS (p), sel_name); |
| if (!fnd && PROTOCOL_LIST (p)) |
| /* APPLE LOCAL end radar 4550413 */ |
| fnd = lookup_method_in_protocol_list (PROTOCOL_LIST (p), |
| sel_name, is_class); |
| } |
| else |
| { |
| ; /* An identifier...if we could not find a protocol. */ |
| } |
| |
| if (fnd) |
| return fnd; |
| } |
| |
| return 0; |
| } |
| |
| static tree |
| lookup_protocol_in_reflist (tree rproto_list, tree lproto) |
| { |
| tree rproto, p; |
| |
| /* Make sure the protocol is supported by the object on the rhs. */ |
| if (TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE) |
| { |
| tree fnd = 0; |
| for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) |
| { |
| p = TREE_VALUE (rproto); |
| |
| if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) |
| { |
| if (lproto == p) |
| fnd = lproto; |
| |
| else if (PROTOCOL_LIST (p)) |
| fnd = lookup_protocol_in_reflist (PROTOCOL_LIST (p), lproto); |
| } |
| |
| if (fnd) |
| return fnd; |
| } |
| } |
| else |
| { |
| ; /* An identifier...if we could not find a protocol. */ |
| } |
| |
| return 0; |
| } |
| |
| void |
| /* APPLE LOCAL radar 4548636 */ |
| objc_start_class_interface (tree class, tree super_class, tree protos, tree attributes) |
| { |
| objc_interface_context |
| = objc_ivar_context |
| = start_class (CLASS_INTERFACE_TYPE, class, super_class, protos); |
| /* APPLE LOCAL begin radar 4548636 */ |
| CLASS_ATTRIBUTES (objc_interface_context) = attributes; |
| objc_warn_on_class_attributes (objc_interface_context, false); |
| /* APPLE LOCAL end radar 4548636 */ |
| objc_public_flag = 0; |
| } |
| |
| void |
| objc_start_category_interface (tree class, tree categ, tree protos) |
| { |
| /* APPLE LOCAL begin radar 4994854 */ |
| if (categ == NULL_TREE) |
| { |
| /* Anonymous category. Check if it is a continuation anonymous category? */ |
| tree class_category_is_assoc_with = lookup_interface (class); |
| if (class_category_is_assoc_with) |
| { |
| tree cat = lookup_category (class_category_is_assoc_with, NULL_TREE); |
| if (cat) |
| { |
| /* This is a continuation anonymous category. Use the first declaration. */ |
| objc_interface_context = cat; |
| objc_ivar_chain = continue_class (objc_interface_context); |
| return; |
| } |
| } |
| } |
| /* APPLE LOCAL end radar 4994854 */ |
| objc_interface_context |
| = start_class (CATEGORY_INTERFACE_TYPE, class, categ, protos); |
| objc_ivar_chain |
| = continue_class (objc_interface_context); |
| } |
| |
| void |
| objc_start_protocol (tree name, tree protos) |
| { |
| objc_interface_context |
| = start_protocol (PROTOCOL_INTERFACE_TYPE, name, protos); |
| /* APPLE LOCAL C* language */ |
| objc_method_optional_flag = 0; |
| } |
| |
| void |
| objc_continue_interface (void) |
| { |
| /* APPLE LOCAL begin radar 4666559 */ |
| /* Since we may add additional ivars for @property declarations, |
| do not output any debug info. for class type as yet. */ |
| gcc_assert (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE); |
| save_default_debug_hooks = debug_hooks; |
| debug_hooks = &do_nothing_debug_hooks; |
| /* APPLE LOCAL end radar 4666559 */ |
| objc_ivar_chain |
| = continue_class (objc_interface_context); |
| /* APPLE LOCAL radar 4666559 */ |
| debug_hooks = save_default_debug_hooks; |
| } |
| |
| void |
| objc_finish_interface (void) |
| { |
| finish_class (objc_interface_context); |
| /* APPLE LOCAL begin radar 4666559 */ |
| if (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE) |
| { |
| tree record = CLASS_STATIC_TEMPLATE (objc_interface_context); |
| /* Now output debug info. Since ivar list is now complete. */ |
| gcc_assert (record); |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); |
| #endif /* OBJCPLUS */ |
| rest_of_type_compilation (record, 1); |
| if (flag_debug_only_used_symbols && TYPE_STUB_DECL (record)) |
| TREE_USED (TYPE_STUB_DECL (record)) = 1; |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif /* OBJCPLUS */ |
| } |
| /* APPLE LOCAL end radar 4666559 */ |
| objc_interface_context = NULL_TREE; |
| /* APPLE LOCAL C* language */ |
| objc_method_optional_flag = 0; |
| } |
| |
| void |
| objc_start_class_implementation (tree class, tree super_class) |
| { |
| objc_implementation_context |
| = objc_ivar_context |
| = start_class (CLASS_IMPLEMENTATION_TYPE, class, super_class, NULL_TREE); |
| objc_public_flag = 0; |
| } |
| |
| void |
| objc_start_category_implementation (tree class, tree categ) |
| { |
| objc_implementation_context |
| = start_class (CATEGORY_IMPLEMENTATION_TYPE, class, categ, NULL_TREE); |
| objc_ivar_chain |
| = continue_class (objc_implementation_context); |
| } |
| |
| /* APPLE LOCAL begin radar 4695109 */ |
| /* This routine which used to implement new abi's |
| @implementation <proto-name> @end |
| feature to generate meta-data for the protocol is now disallowed. */ |
| void |
| objc_protocol_implementation (tree protolist ATTRIBUTE_UNUSED) |
| { |
| error ("use of @implementation <proto-name> @end not allowed"); |
| } |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| void |
| objc_continue_implementation (void) |
| { |
| objc_ivar_chain |
| = continue_class (objc_implementation_context); |
| } |
| |
| void |
| objc_finish_implementation (void) |
| { |
| /* APPLE LOCAL begin mainline */ |
| #ifdef OBJCPLUS |
| if (flag_objc_call_cxx_cdtors) |
| objc_generate_cxx_cdtors (); |
| #endif |
| /* APPLE LOCAL end mainline */ |
| |
| if (objc_implementation_context) |
| { |
| finish_class (objc_implementation_context); |
| objc_ivar_chain = NULL_TREE; |
| objc_implementation_context = NULL_TREE; |
| } |
| else |
| warning ("%<@end%> must appear in an @implementation context"); |
| } |
| |
| void |
| objc_set_visibility (int visibility) |
| { |
| objc_public_flag = visibility; |
| } |
| |
| /* APPLE LOCAL begin C* language */ |
| void |
| objc_set_method_opt (int optional) |
| { |
| objc_method_optional_flag = optional; |
| if (!objc_interface_context |
| || TREE_CODE (objc_interface_context) != PROTOCOL_INTERFACE_TYPE) |
| { |
| error ("@optional/@required is allowed in @protocol context only."); |
| objc_method_optional_flag = 0; |
| } |
| } |
| |
| /* This routine gather property attribute information from attribute |
| portion of a property declaration. */ |
| |
| void |
| objc_set_property_attr (int attr, tree ident) |
| { |
| static char string[BUFSIZE]; |
| switch (attr) |
| { |
| case 0: /* init */ |
| property_readonly = property_bycopy = false; |
| property_byref = false; |
| property_dynamic = false; |
| property_setter = property_getter = property_ivar = NULL_TREE; |
| property_weak = false; |
| property_readwrite = property_assign = property_retain = property_copy = false; |
| /* APPLE LOCAL radar 4947014 - objc atomic property */ |
| property_atomic = true; |
| break; |
| case 1: /* readonly */ |
| property_readonly = true; |
| break; |
| case 2: /* getter = ident */ |
| if (property_getter != NULL_TREE) |
| error("getter attribute can be specified only once"); |
| property_getter = ident; |
| break; |
| case 3: /* setter = ident */ |
| if (property_setter != NULL_TREE) |
| error("setter attribute can be specified only once"); |
| /* setters always have a trailing ':' in their name. In fact, this is the |
| only syntax that parser recognizes for a setter name. Must add a trailing |
| ':' here so name matches that of the declaration of user instance method |
| for the setter. */ |
| sprintf (string, "%s:", IDENTIFIER_POINTER (ident)); |
| property_setter = get_identifier (string);; |
| break; |
| case 4: /* ivar = ident */ |
| if (flag_objc_new_property) |
| { |
| warning ("ivar attribute is not supported in new property and is ignored"); |
| property_ivar = NULL_TREE; |
| } |
| else |
| property_ivar = !ident ? boolean_true_node : ident; |
| break; |
| case 5: /* bycopy */ |
| if (flag_objc_new_property) |
| warning ("bycopy attribute is not supported in new property and is ignored"); |
| else |
| property_bycopy = true; |
| break; |
| case 6: /* byref */ |
| if (flag_objc_new_property) |
| warning ("byref attribute is not supported in new property and is ignored"); |
| else |
| property_byref = true; |
| break; |
| case 7: /* dynamic */ |
| if (flag_objc_new_property) |
| warning ("dynamic attribute is not supported in new property and is ignored"); |
| else |
| property_dynamic = true; |
| break; |
| case 8: /* weak */ |
| if (flag_objc_new_property) |
| warning ("weak attribute is not supported in new property and is ignored"); |
| else |
| property_weak = true; |
| break; |
| case 9: /* readwrite */ |
| property_readwrite = true; |
| break; |
| case 10: /* assign */ |
| property_assign = true; |
| break; |
| case 11: /* retain */ |
| property_retain = true; |
| break; |
| case 12: /* copy */ |
| property_copy = true; |
| break; |
| /* APPLE LOCAL begin radar 4947014 - objc atomic property */ |
| case 13: /* nonatomic */ |
| property_atomic = false; |
| break; |
| /* APPLE LOCAL end radar 4947014 - objc atomic property */ |
| default: |
| break; |
| } |
| } |
| |
| /* This routine declares a 'setter' method for property X in class CLASS. */ |
| static void |
| objc_add_property_setter_method (tree class, tree x) |
| { |
| tree type = TREE_TYPE (x); |
| tree key_name, arg_type, arg_name; |
| tree setter_decl, selector; |
| tree ret_type = build_tree_list (NULL_TREE, void_type_node); |
| tree mth; |
| /* setter name. */ |
| key_name = get_identifier (objc_build_property_setter_name ( |
| PROPERTY_NAME (x), false)); |
| arg_type = build_tree_list (NULL_TREE, type); |
| arg_name = get_identifier ("_value"); |
| selector = objc_build_keyword_decl (key_name, arg_type, arg_name); |
| setter_decl = build_method_decl (INSTANCE_METHOD_DECL, |
| ret_type, selector, |
| build_tree_list (NULL_TREE, NULL_TREE)); |
| /* APPLE LOCAL radar 4712415 */ |
| TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); |
| mth = lookup_method (CLASS_NST_METHODS (class), |
| METHOD_SEL_NAME (setter_decl)); |
| if (PROPERTY_IVAR_NAME (x) |
| && (mth = lookup_method (CLASS_NST_METHODS (class), |
| METHOD_SEL_NAME (setter_decl)))) |
| { |
| /* user declared accessor is encounterred. This is error. */ |
| error ("user accessor %<%c%s%> not allowed for property %qs", |
| '-', IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)), |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| } |
| else |
| objc_add_method (class, setter_decl, false, false); |
| METHOD_PROPERTY_CONTEXT (setter_decl) = x; |
| return; |
| } |
| |
| /* This routine builds a 'property_decl' tree node and adds it to the list |
| of such properties in the current class. It also checks for duplicates. */ |
| |
| void |
| objc_add_property_variable (tree decl) |
| { |
| tree property_decl; |
| tree x; |
| tree interface = NULL_TREE; |
| |
| /* APPLE LOCAL radar 4531086 */ |
| OBJC_WARN_OBJC2_FEATURES ("property"); |
| if (DECL_INITIAL (decl) || TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) |
| { |
| error ("bad property declaration"); |
| return; |
| } |
| if (objc_implementation_context) |
| { |
| if (flag_objc_new_property) |
| { |
| error ("property cannot be declared inside @implementation context"); |
| return; |
| } |
| interface = lookup_interface (CLASS_NAME (objc_implementation_context)); |
| if (!interface) |
| { |
| error ("No property can be implemented without an interface"); |
| return; |
| } |
| if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| interface = lookup_category (interface, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| if (!interface) |
| { |
| error ("No property can be implemented in category without an interface"); |
| return; |
| } |
| } |
| } |
| else if (!objc_interface_context) |
| { |
| fatal_error ("property declaration not in @interface or @implementation context"); |
| return; |
| } |
| |
| property_decl = make_node (PROPERTY_DECL); |
| TREE_TYPE (property_decl) = TREE_TYPE (decl); |
| |
| PROPERTY_NAME (property_decl) = DECL_NAME (decl); |
| PROPERTY_GETTER_NAME (property_decl) = property_getter; |
| PROPERTY_SETTER_NAME (property_decl) = property_setter; |
| PROPERTY_IVAR_NAME (property_decl) = property_ivar; |
| PROPERTY_READONLY (property_decl) = property_readonly |
| ? boolean_true_node |
| : boolean_false_node; |
| if (flag_objc_new_property) |
| { |
| PROPERTY_IVAR_NAME (property_decl) = NULL_TREE; |
| PROPERTY_DYNAMIC (property_decl) = NULL_TREE; |
| /* APPLE LOCAL radar 4712415 */ |
| TREE_DEPRECATED (property_decl) = TREE_DEPRECATED (decl); |
| /* assign, retain and copy are mutually exclusive. */ |
| if ((property_assign && property_retain) |
| || (property_assign && property_copy) |
| || (property_retain && property_copy)) |
| { |
| error ("assign, retain and copy are mutually exclusive"); |
| property_copy = property_retain = false; |
| } |
| else if (!property_assign && !property_retain && !property_copy |
| && !property_readonly |
| && objc_type_valid_for_messaging (TREE_TYPE (property_decl))) |
| { |
| /* For -fobjc-gc-only, a warning is issued under more restricted condition. See below. */ |
| if (!flag_objc_gc_only) |
| warning ("no 'assign', 'retain', or 'copy' attribute is specified - 'assign' is assumed"); |
| } |
| |
| /* readwrite is the default */ |
| if (!property_readonly) |
| property_readwrite = true; |
| /* readonly and readwrite are mutually exclusive. */ |
| else if (property_readwrite) |
| { |
| error ("readonly and readwrite are mutually exclusive"); |
| property_readwrite = false; |
| PROPERTY_READONLY (property_decl) = boolean_false_node; |
| } |
| PROPERTY_COPY (property_decl) = property_copy |
| ? boolean_true_node |
| : boolean_false_node; |
| PROPERTY_RETAIN (property_decl) = property_retain |
| ? boolean_true_node |
| : boolean_false_node; |
| PROPERTY_READWRITE (property_decl) = property_readwrite |
| ? boolean_true_node |
| : boolean_false_node; |
| /* APPLE LOCAL radar 4947014 - objc atomic property */ |
| ATOMIC_PROPERTY (property_decl) = property_atomic; |
| } |
| else |
| { |
| PROPERTY_BYCOPY (property_decl) = property_bycopy |
| ? boolean_true_node |
| : boolean_false_node; |
| PROPERTY_BYREF (property_decl) = property_byref |
| ? boolean_true_node |
| : boolean_false_node; |
| PROPERTY_DYNAMIC (property_decl) = property_dynamic |
| ? boolean_true_node |
| : boolean_false_node; |
| PROPERTY_WEAK (property_decl) = property_weak |
| ? boolean_true_node |
| : boolean_false_node; |
| } |
| |
| if (objc_interface_context) |
| { |
| /* Doing the property in interface declaration. */ |
| |
| /* For category, only ivar=xx is valid, which must point at an existing |
| ivar in the class. */ |
| if (!flag_objc_new_property && TREE_CODE (objc_interface_context) == CATEGORY_INTERFACE_TYPE |
| && PROPERTY_IVAR_NAME (property_decl) == boolean_true_node) |
| { |
| error ("in category only ivar=name is valid, where 'name' is an existing ivar in the class"); |
| PROPERTY_IVAR_NAME (property_decl) = NULL_TREE; /* recover */ |
| /* To avoid further warnings. */ |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; |
| } |
| |
| /* Make 'byref' the default attribute for pointer-to-object properties. */ |
| if (!flag_objc_new_property && PROPERTY_BYREF (property_decl) == boolean_false_node |
| && PROPERTY_BYCOPY (property_decl) == boolean_false_node |
| && PROPERTY_WEAK (property_decl) == boolean_false_node |
| && objc_type_valid_for_messaging (TREE_TYPE (property_decl))) |
| PROPERTY_BYREF (property_decl) = boolean_true_node; |
| /* Issue error if property and an ivar name match. */ |
| if (!flag_objc_new_property && TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE |
| && is_ivar (CLASS_IVARS (objc_interface_context), DECL_NAME (decl))) |
| error ("property name %qD matches an ivar name in this class", decl); |
| if (flag_objc_new_property && PROPERTY_ASSIGN (property_decl)) |
| { |
| if (objc_type_valid_for_messaging (TREE_TYPE (property_decl))) |
| { |
| /* APPLE LOCAL begin radar 4855821 */ |
| if (!flag_objc_gc) |
| { |
| if (!property_assign) |
| warning ("'assign' attribute (default) not appropriate for non-gc object property %qs", |
| IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); |
| } |
| /* APPLE LOCAL end radar 4855821 */ |
| else if (!property_assign) |
| { |
| /* under -fobjc-gc[-only], a warning should be issued if none of those were specified |
| AND the object type conforms to <NSCopying>. */ |
| tree ltyp = TREE_TYPE (property_decl); |
| do |
| ltyp = TREE_TYPE (ltyp); |
| while (POINTER_TYPE_P (ltyp)); |
| /* APPLE LOCAL radar 5096644 */ |
| if (TYPE_HAS_OBJC_INFO (ltyp) && TREE_CODE (TYPE_OBJC_INTERFACE (ltyp)) != IDENTIFIER_NODE) |
| { |
| tree id_NSCopying = get_identifier ("NSCopying"); |
| tree lproto = lookup_protocol (id_NSCopying); |
| objc_declare_protocols (tree_cons (NULL_TREE, id_NSCopying, NULL_TREE)); |
| /* APPLE LOCAL begin radar 5096644 */ |
| if (lproto && TREE_CODE (lproto) == PROTOCOL_INTERFACE_TYPE |
| && objc_lookup_protocol (lproto , TYPE_OBJC_INTERFACE (ltyp), ltyp, false)) |
| warning ("'assign' attribute on property %qs which implements 'NSCopying' " |
| "protocol not appropriate with %s", |
| IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), |
| flag_objc_gc_only ? "-fobjc-gc-only" : "-fobjc-gc"); |
| /* APPLE LOCAL end radar 5096644 */ |
| } |
| } |
| } |
| } |
| |
| /* must check for duplicate property declarations. */ |
| for (x = CLASS_PROPERTY_DECL (objc_interface_context); x; x = TREE_CHAIN (x)) |
| { |
| if (PROPERTY_NAME (x) == DECL_NAME (decl)) |
| { |
| error ("%Jduplicate property declaration %qD", decl, decl); |
| return; |
| } |
| } |
| |
| /* APPLE LOCAL begin radar 4965989 */ |
| /* New property's anonymous category */ |
| if (ANONYMOUS_CATEGORY (objc_interface_context)) |
| { |
| /* @interface INTF() ... @end */ |
| tree class = lookup_interface (CLASS_NAME (objc_interface_context)); |
| if (class) |
| { |
| /* Find the property in the class. */ |
| for (x = CLASS_PROPERTY_DECL (class); x; x = TREE_CHAIN (x)) |
| if (PROPERTY_NAME (x) == DECL_NAME (decl)) |
| break; |
| if (x) |
| { |
| if (PROPERTY_READONLY (x) == boolean_true_node |
| && PROPERTY_READWRITE (property_decl) == boolean_true_node) |
| { |
| /* class property is now 'readwrite'. */ |
| PROPERTY_READONLY (x) = boolean_false_node; |
| PROPERTY_READWRITE (x) = boolean_true_node; |
| PROPERTY_COPY (x) = PROPERTY_COPY (property_decl); |
| PROPERTY_RETAIN (x) = PROPERTY_RETAIN (property_decl); |
| PROPERTY_SETTER_NAME (x) = PROPERTY_SETTER_NAME (property_decl); |
| } |
| else |
| error ("only 'readwrite' property %qs can override a 'readonly' property in main class %qs", |
| IDENTIFIER_POINTER (PROPERTY_NAME (property_decl)), |
| IDENTIFIER_POINTER (CLASS_NAME (class))); |
| } |
| /* APPLE LOCAL begin radar 4994854 */ |
| else |
| { |
| /* Inject anonymous categories property declaration into promary class. */ |
| tree save_objc_interface_context = objc_interface_context; |
| objc_interface_context = class; |
| objc_add_property_variable (decl); |
| objc_interface_context = save_objc_interface_context; |
| } |
| /* APPLE LOCAL end radar 4994854 */ |
| } |
| else |
| error ("anonymous category %qs has no primary class", IDENTIFIER_POINTER (CLASS_NAME (class))); |
| } |
| /* APPLE LOCAL end radar 4965989 */ |
| TREE_CHAIN (property_decl) = CLASS_PROPERTY_DECL (objc_interface_context); |
| CLASS_PROPERTY_DECL (objc_interface_context) = property_decl; |
| } |
| else |
| { |
| /* Doing the property in implementation context. */ |
| |
| /* Make 'byref' the default attribute for pointer-to-object properties. */ |
| if (!flag_objc_new_property && PROPERTY_BYREF (property_decl) == boolean_false_node |
| && PROPERTY_BYCOPY (property_decl) == boolean_false_node |
| && PROPERTY_WEAK (property_decl) == boolean_false_node |
| && objc_type_valid_for_messaging (TREE_TYPE (property_decl))) |
| PROPERTY_BYREF (property_decl) = boolean_true_node; |
| /* If property is not declared in the interface issue error. */ |
| for (x = CLASS_PROPERTY_DECL (interface); x; x = TREE_CHAIN (x)) |
| if (PROPERTY_NAME (x) == DECL_NAME (decl)) |
| break; |
| if (!x) |
| { |
| error ("no declaration of property %qs found in the interface", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| return; |
| } |
| /* readonlys must also match. */ |
| if (PROPERTY_READONLY (x) == boolean_false_node |
| && PROPERTY_READONLY (property_decl) == boolean_true_node) |
| error ("property %qs is 'readonly' in implementation but not in interface", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| else |
| /* If interface declares property 'readonly' but implementation does not, |
| assume that property is writable so methods defined in implementation |
| can write into it. This is new feature as of 8/16/06 */ |
| if (PROPERTY_READONLY (x) == boolean_true_node |
| && PROPERTY_READONLY (property_decl) == boolean_false_node) |
| { |
| PROPERTY_READONLY (x) = boolean_false_node; |
| if (PROPERTY_SETTER_NAME (x) == NULL_TREE) |
| objc_add_property_setter_method (interface, x); |
| } |
| /* bycopy must also match. */ |
| if (PROPERTY_BYCOPY (x) != PROPERTY_BYCOPY (property_decl)) |
| { |
| error ("property %qs has conflicting 'bycopy' attribute with its interface version", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| } |
| /* weak must also match. */ |
| if (!flag_objc_new_property && PROPERTY_WEAK (x) != PROPERTY_WEAK (property_decl)) |
| { |
| error ("property %qs has conflicting 'weak' attribute with its interface version", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| } |
| if (PROPERTY_BYREF (x) != PROPERTY_BYREF (property_decl)) |
| { |
| error ("property %qs has conflicting 'byref' attribute with its interface version", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| } |
| /* dynamic must match */ |
| if (PROPERTY_DYNAMIC (x) == boolean_true_node |
| && PROPERTY_DYNAMIC (property_decl) == boolean_false_node) |
| { |
| error ("property %qs has conflicting 'dynamic' attribute with its interface version", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; /* recover */ |
| } |
| if (!PROPERTY_IVAR_NAME (x)) |
| { |
| if (PROPERTY_IVAR_NAME (property_decl)) |
| { |
| if (PROPERTY_IVAR_NAME (property_decl) == boolean_true_node) |
| { |
| error ("property %qs's interface and implementation have conflicting 'ivar' attribute", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| PROPERTY_IVAR_NAME (property_decl) = NULL_TREE; |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; /* recover */ |
| } |
| } |
| else if (PROPERTY_DYNAMIC (property_decl) == boolean_false_node |
| && (!PROPERTY_GETTER_NAME (property_decl) |
| || (PROPERTY_READONLY (x) == boolean_false_node && !PROPERTY_SETTER_NAME (property_decl)))) |
| warning ("no accessor methods are generated for property %qs because 'ivar' not specified", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| } |
| else |
| { |
| if (!PROPERTY_IVAR_NAME (property_decl)) |
| PROPERTY_IVAR_NAME (property_decl) = PROPERTY_IVAR_NAME (x); /* merge */ |
| else if (PROPERTY_IVAR_NAME (property_decl) != PROPERTY_IVAR_NAME (x)) |
| { |
| error ("property %qs's interface and implementation have conflicting 'ivar' attribute", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| PROPERTY_IVAR_NAME (property_decl) = NULL_TREE; |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; /* recover */ |
| } |
| } |
| |
| /* types must also match. */ |
| if (! comptypes (TREE_TYPE (x), TREE_TYPE (property_decl))) |
| { |
| error ("property %qs has conflicting type with its interface version", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| TREE_TYPE (property_decl) = TREE_TYPE (x); /* recover */ |
| } |
| /* Cannot have readonly and setter attribute for the same property. */ |
| if (PROPERTY_READONLY (property_decl) == boolean_true_node && |
| PROPERTY_SETTER_NAME (property_decl)) |
| { |
| warning ("readonly property cannot have setter; setter is ignored"); |
| PROPERTY_SETTER_NAME (property_decl) = NULL_TREE; |
| } |
| /* Add the property to the list of properties for current implementation. */ |
| TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); |
| IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; |
| } |
| } |
| |
| /* This routine looks for a given PROPERTY in a list of CLASS, CATEGORY, or |
| PROTOCOL. */ |
| |
| static tree |
| lookup_property_in_list (tree chain, tree property) |
| { |
| tree x; |
| for (x = CLASS_PROPERTY_DECL (chain); x; x = TREE_CHAIN (x)) |
| if (PROPERTY_NAME (x) == property) |
| return x; |
| return NULL_TREE; |
| } |
| |
| /* This routine looks for a given PROPERTY in the tree chain of RPROTO_LIST. */ |
| |
| static tree |
| lookup_property_in_protocol_list (tree rproto_list, tree property) |
| { |
| tree rproto, x; |
| for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) |
| { |
| tree p = TREE_VALUE (rproto); |
| if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) |
| { |
| if ((x = lookup_property_in_list (p, property))) |
| return x; |
| if (PROTOCOL_LIST (p) |
| && (x = lookup_property_in_protocol_list (PROTOCOL_LIST (p), property))) |
| return x; |
| } |
| else |
| { |
| ; /* An identifier...if we could not find a protocol. */ |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine looks up the PROPERTY in current INTERFACE, its categories and up the |
| chain of interface hierarchy. */ |
| |
| static tree |
| lookup_property (tree interface_type, tree property) |
| { |
| tree inter = interface_type; |
| while (inter) |
| { |
| tree x, category; |
| if (TREE_CODE (inter) != CLASS_INTERFACE_TYPE) |
| return NULL_TREE; /* error - caller will issue it */ |
| if ((x = lookup_property_in_list (inter, property))) |
| return x; |
| /* Failing that, look for the property in each category of the class. */ |
| category = inter; |
| while ((category = CLASS_CATEGORY_LIST (category))) |
| |
| if ((x = lookup_property_in_list (category, property))) |
| return x; |
| |
| /* Failing to find in categories, look for property in protocol list. */ |
| if (CLASS_PROTOCOL_LIST (inter) |
| && (x = lookup_property_in_protocol_list ( |
| CLASS_PROTOCOL_LIST (inter), property))) |
| return x; |
| |
| /* Failing that, climb up the inheritance hierarchy. */ |
| inter = lookup_interface (CLASS_SUPER_NAME (inter)); |
| } |
| return inter; |
| } |
| |
| static tree |
| objc_get_inner_exp (tree t) |
| { |
| while (TREE_CODE (t) == COMPOUND_EXPR |
| || TREE_CODE (t) == MODIFY_EXPR |
| || TREE_CODE (t) == NOP_EXPR |
| || TREE_CODE (t) == CONVERT_EXPR |
| || TREE_CODE (t) == COMPONENT_REF) |
| t = TREE_OPERAND (t, 0); |
| return t; |
| } |
| |
| /* This routine recognizes a dot-notation for a propery reference and generates a call to |
| the getter function for this property. In all other cases, it returns a NULL_TREE. */ |
| |
| tree |
| objc_build_getter_call (tree receiver, tree component) |
| { |
| tree interface_type = NULL_TREE; |
| tree x; |
| tree basetype; |
| tree getter; |
| tree rtype; |
| |
| if (component == NULL_TREE || TREE_CODE (component) != IDENTIFIER_NODE) |
| return NULL_TREE; |
| if (receiver == NULL_TREE || (rtype = TREE_TYPE (receiver)) == NULL_TREE) |
| return NULL_TREE; |
| x = NULL_TREE; |
| if (objc_is_id (rtype)) |
| { |
| tree rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) |
| ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) |
| : NULL_TREE); |
| if (rprotos) |
| x = lookup_property_in_protocol_list (rprotos, component); |
| /* Could be super.property */ |
| else { |
| tree t = objc_get_inner_exp (receiver); |
| if (t == UOBJC_SUPER_decl) |
| { |
| /* super.property */ |
| if (implementation_template |
| && CLASS_SUPER_NAME (implementation_template)) |
| { |
| interface_type = lookup_interface (CLASS_SUPER_NAME (implementation_template)); |
| if (interface_type) |
| x = lookup_property (interface_type, component); |
| } |
| } |
| } |
| } |
| else |
| { |
| basetype = TYPE_MAIN_VARIANT (rtype); |
| if (basetype != NULL_TREE && TREE_CODE (basetype) == POINTER_TYPE) |
| basetype = TREE_TYPE (basetype); |
| else return NULL_TREE; |
| |
| while (basetype != NULL_TREE |
| && TREE_CODE (basetype) == RECORD_TYPE && OBJC_TYPE_NAME (basetype) |
| && TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL |
| && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype))) |
| basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)); |
| if (basetype != NULL_TREE && TYPED_OBJECT (basetype)) |
| { |
| interface_type = TYPE_OBJC_INTERFACE (basetype); |
| /* Handle more user error conditions */ |
| if (!interface_type || |
| (TREE_CODE (interface_type) != CLASS_INTERFACE_TYPE |
| && TREE_CODE (interface_type) != PROTOCOL_INTERFACE_TYPE |
| && TREE_CODE (interface_type) != CATEGORY_INTERFACE_TYPE)) |
| { |
| /* Better error recovery */ |
| if (TREE_CODE (receiver) == CALL_EXPR |
| && CALL_EXPR_OBJC_PROPERTY_GETTER (receiver)) |
| { |
| error ("accessing unknown %qs component of a property", |
| IDENTIFIER_POINTER (component)); |
| return error_mark_node; |
| } |
| else |
| return NULL_TREE; |
| } |
| x = lookup_property (interface_type, component); |
| /* APPLE LOCAL begin radar 4959107 */ |
| if (!x && TYPE_OBJC_PROTOCOL_LIST (basetype)) |
| x = lookup_property_in_protocol_list (TYPE_OBJC_PROTOCOL_LIST (basetype), component); |
| /* APPLE LOCAL end radar 4959107 */ |
| } |
| } |
| |
| if (x) |
| { |
| tree call_exp; |
| /* Get the getter name. */ |
| gcc_assert (PROPERTY_NAME (x)); |
| if (flag_objc_new_property && PROPERTY_GETTER_NAME (x)) |
| /* If 'getter=getter_name' attribute is specified, must use the user provided |
| getter name in generating messaging call. */ |
| getter = objc_finish_message_expr (receiver, PROPERTY_GETTER_NAME (x), NULL_TREE); |
| else |
| getter = objc_finish_message_expr (receiver, PROPERTY_NAME (x), NULL_TREE); |
| call_exp = getter; |
| #ifdef OBJCPLUS |
| /* In C++, a getter which returns an aggregate value results in a target_expr |
| which initializes a temporary to the call expression. Must accomodate |
| for this senarion. */ |
| if (TREE_CODE (getter) == TARGET_EXPR) |
| { |
| gcc_assert (IS_AGGR_TYPE (TREE_TYPE (getter))); |
| gcc_assert (TREE_CODE (TREE_OPERAND (getter,0)) == VAR_DECL); |
| call_exp = TREE_OPERAND (getter,1); |
| } |
| #endif |
| gcc_assert (TREE_CODE (call_exp) == CALL_EXPR); |
| TREE_VALUE (TREE_OPERAND (call_exp, 1)) = receiver; |
| CALL_EXPR_OBJC_PROPERTY_GETTER (call_exp) = 1; |
| return getter; |
| } |
| else if (flag_objc_new_property && interface_type) |
| { |
| getter = lookup_method_static (interface_type, component, 0, false); |
| if (getter) |
| { |
| tree call_exp; |
| getter = objc_finish_message_expr (receiver, component, NULL_TREE); |
| call_exp = getter; |
| #ifdef OBJCPLUS |
| /* In C++, a getter which returns an aggregate value results in a target_expr |
| which initializes a temporary to the call expression. Must accomodate |
| for this senarion. */ |
| if (TREE_CODE (getter) == TARGET_EXPR) |
| { |
| gcc_assert (IS_AGGR_TYPE (TREE_TYPE (getter))); |
| gcc_assert (TREE_CODE (TREE_OPERAND (getter,0)) == VAR_DECL); |
| call_exp = TREE_OPERAND (getter,1); |
| } |
| #endif |
| gcc_assert (TREE_CODE (call_exp) == CALL_EXPR); |
| TREE_VALUE (TREE_OPERAND (call_exp, 1)) = receiver; |
| CALL_EXPR_OBJC_PROPERTY_GETTER (call_exp) = 1; |
| return getter; |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine is called with PROPERTY_IDENT being the name of the getter method, |
| ; user attribute specified or the default. From the getter name, it first finds |
| the property name and from property name it finds the setter_name; one specified |
| by user or the default. */ |
| |
| static const char * |
| objc_resolve_build_property_setter_name (tree receiver, tree property_ident) |
| { |
| tree rtype, basetype,x,class=NULL_TREE; |
| tree getter_decl; |
| gcc_assert (receiver && TREE_TYPE (receiver)); |
| rtype = TREE_TYPE (receiver); |
| if (objc_is_id (rtype)) |
| { |
| tree t = objc_get_inner_exp (receiver); |
| if (t == UOBJC_SUPER_decl) |
| { |
| /* super.property */ |
| if (implementation_template |
| && CLASS_SUPER_NAME (implementation_template)) |
| class = lookup_interface (CLASS_SUPER_NAME (implementation_template)); |
| } |
| } |
| else |
| { |
| basetype = TYPE_MAIN_VARIANT (rtype); |
| gcc_assert (basetype && TREE_CODE (basetype) == POINTER_TYPE); |
| basetype = TREE_TYPE (basetype); |
| while (basetype != NULL_TREE |
| && TREE_CODE (basetype) == RECORD_TYPE && OBJC_TYPE_NAME (basetype) |
| && TREE_CODE (OBJC_TYPE_NAME (basetype)) == TYPE_DECL |
| && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype))) |
| basetype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (basetype)); |
| gcc_assert (basetype && TYPED_OBJECT (basetype)); |
| class = TYPE_OBJC_INTERFACE (basetype); |
| } |
| gcc_assert (class); |
| getter_decl = lookup_method_static (class, property_ident, 0, true); |
| if (getter_decl) |
| { |
| x = METHOD_PROPERTY_CONTEXT (getter_decl); |
| gcc_assert (x && PROPERTY_NAME (x)); |
| if (PROPERTY_SETTER_NAME (x)) |
| return IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)); |
| else |
| return objc_build_property_setter_name (PROPERTY_NAME (x), true); |
| } |
| else |
| { |
| /* Allow for direct access of 'setter' using dot syntax. */ |
| char *setter_name = objc_build_property_setter_name (property_ident, true); |
| return setter_name; |
| } |
| } |
| |
| /* This routine builds a call to property's 'setter' function. RECEIVER is the |
| receiving object for 'setter'. PROPERTY_IDENT is name of the property and |
| RHS is the argument passed to the 'setter' function. */ |
| |
| static tree |
| objc_setter_func_call (tree receiver, tree property_ident, tree rhs) |
| { |
| tree setter_argument = build_tree_list (NULL_TREE, rhs); |
| const char *setter_name = flag_objc_new_property ? |
| objc_resolve_build_property_setter_name (receiver, property_ident) : |
| objc_build_property_setter_name (property_ident, true); |
| tree setter; |
| in_objc_property_setter_name_context = true; |
| setter = objc_finish_message_expr (receiver, |
| get_identifier (setter_name), |
| setter_argument); |
| in_objc_property_setter_name_context = false; |
| /* APPLE LOCAL begin radar 4838528 */ |
| if (flag_objc_new_property && TREE_CODE (setter) == CALL_EXPR |
| && TREE_TYPE (setter) != void_type_node) |
| warning ("type of setter %qs must be 'void' instead of '%T'", |
| setter_name, TREE_TYPE (setter) ); |
| /* APPLE LOCAL end radar 4838528 */ |
| return setter; |
| } |
| |
| /* This routine builds a compound expression which implements semantics |
| of property's setter expression: |
| typeof (rhs) temp; (temp = rhs, [receiver prop_setter:temp], temp) |
| if rhs has no side-effect, simply generate: |
| ([receiver prop_setter:rhs], rhs) |
| */ |
| static tree |
| objc_build_compound_setter_call (tree receiver, tree prop_ident, tree rhs) |
| { |
| tree temp, bind, comma_exp; |
| if (TREE_SIDE_EFFECTS (rhs)) |
| { |
| /* To allow for correct property assignment semantics |
| and in accordance with C99 rules we generate: type temp; |
| (temp = rhs, [lhs Setter:temp], temp) */ |
| /* APPLE LOCAL begin radar 5279122 */ |
| rhs = default_conversion(rhs); |
| temp = objc_create_named_tmp_var (TREE_TYPE (rhs), "prop"); |
| /* APPLE LOCAL end radar 5279122 */ |
| bind = build (BIND_EXPR, void_type_node, temp, NULL, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| comma_exp = build_modify_expr (temp, NOP_EXPR, rhs); |
| comma_exp = build_compound_expr (comma_exp, |
| objc_setter_func_call (receiver, prop_ident, temp)); |
| } |
| else |
| { |
| comma_exp = objc_setter_func_call (receiver, prop_ident, rhs); |
| /* APPLE LOCAL radar 5279122 */ |
| rhs = default_conversion(rhs); |
| /* APPLE LOCAL 5140757 */ |
| temp = save_expr (rhs); |
| if (TREE_CODE (temp) == VAR_DECL || TREE_CODE (temp) == PARM_DECL) |
| DECL_SEEN_IN_BIND_EXPR_P (temp) = 1; |
| } |
| /* Suppress C++'s warning of comma-expr with no side-effect. */ |
| TREE_NO_WARNING (temp) = 1; |
| /* Suppress warning on value computed is not used */ |
| comma_exp = build_compound_expr (comma_exp, temp); |
| TREE_NO_WARNING (comma_exp) = 1; |
| return comma_exp; |
| } |
| |
| /* This routine is the new abi version of objc_build_setter_call described below. */ |
| |
| static tree |
| objc_v2_build_setter_call (tree lhs, tree rhs) |
| { |
| tree expr = lhs; |
| |
| if (expr && TREE_CODE (expr) == CALL_EXPR |
| && CALL_EXPR_OBJC_PROPERTY_GETTER (expr)) |
| { |
| tree chain; |
| tree arg = TREE_OPERAND (expr, 1); |
| tree selector_reference = TREE_VALUE (TREE_CHAIN (arg)); |
| /* May have gone through type conversion of (_message_ref_t *) to |
| (_super_message_ref_t *) for super.property = rhs statement. */ |
| if (TREE_CODE (selector_reference) == NOP_EXPR) |
| selector_reference = TREE_OPERAND (selector_reference, 0); |
| gcc_assert (TREE_CODE (selector_reference) == ADDR_EXPR); |
| selector_reference = TREE_OPERAND (selector_reference, 0); |
| gcc_assert (TREE_CODE (selector_reference) == VAR_DECL); |
| for (chain = message_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| if (TREE_PURPOSE (chain) == selector_reference) |
| return objc_build_compound_setter_call (TREE_VALUE (arg), |
| TREE_VALUE (TREE_CHAIN (chain)), |
| rhs); |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine converts a previously synthesized 'getter' function call for |
| a property and converts it to a 'setter' function call for the same |
| property. */ |
| |
| tree |
| objc_build_setter_call (tree lhs, tree rhs) |
| { |
| tree expr; |
| |
| if (flag_objc_abi == 2) |
| return objc_v2_build_setter_call (lhs, rhs); |
| |
| expr = lhs; |
| if (expr && TREE_CODE (expr) == CALL_EXPR |
| && CALL_EXPR_OBJC_PROPERTY_GETTER (expr)) |
| { |
| tree chain; |
| tree arg = TREE_OPERAND (expr, 1); |
| tree selector_reference = TREE_VALUE (TREE_CHAIN (arg)); |
| gcc_assert (selector_reference); |
| for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| if (TREE_PURPOSE (chain) == selector_reference) |
| return objc_build_compound_setter_call (TREE_VALUE (arg), |
| TREE_VALUE (chain), rhs); |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine builds the following type: |
| struct _prop_t { |
| const char * const name; // property name |
| const char * const attributes; // comma-delimited, encoded, |
| // property attributes |
| }; */ |
| |
| static tree |
| build_v2_property_template (void) |
| { |
| tree prop_record; |
| tree field_decl, field_decl_chain; |
| |
| prop_record = start_struct (RECORD_TYPE, get_identifier ("_prop_t")); |
| /* const char * name */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| field_decl_chain = field_decl; |
| /* const char * attribute */ |
| field_decl = create_field_decl (string_type_node, "attribute"); |
| chainon (field_decl_chain, field_decl); |
| finish_struct (prop_record, field_decl_chain, NULL_TREE); |
| return prop_record; |
| } |
| |
| /* This routine builds the following type: |
| struct _prop_list_t { |
| uint32_t entsize; // sizeof (struct _prop_t) |
| uint32_t prop_count; |
| struct _prop_t prop_list [prop_count]; |
| } */ |
| |
| static tree |
| build_v2_property_list_template (tree list_type, int size) |
| { |
| tree property_list_t_record; |
| tree field_decl, field_decl_chain; |
| |
| property_list_t_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* uint32_t const entsize */ |
| field_decl = create_field_decl (integer_type_node, "entsize"); |
| field_decl_chain = field_decl; |
| |
| /* int prop_count */ |
| field_decl = create_field_decl (integer_type_node, "prop_count"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _prop_t prop_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "prop_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (property_list_t_record, field_decl_chain, NULL_TREE); |
| |
| return property_list_t_record; |
| } |
| |
| /* This routine encodes the attribute of the input PROPERTY according to following |
| formula: |
| |
| Property attributes are stored as a comma-delimited C string. The simple attributes |
| readonly and bycopy are encoded as single characters. The parametrized attributes, |
| getter=name, setter=name, and ivar=name, are encoded as single characters, followed |
| by an identifier. Property types are also encoded as a parametrized attribute. The |
| characters used to encode these attributes are defined by the following enumeration: |
| |
| enum PropertyAttributes { |
| kPropertyReadOnly = 'R', // property is read-only. |
| kPropertyBycopy = 'C', // property is a copy of the value last assigned |
| kPropertyByref = '&', // property is a reference to the value last assigned |
| kPropertyDynamic = 'D', // property is dynamic |
| kPropertyGetter = 'G', // followed by getter selector name |
| kPropertySetter = 'S', // followed by setter selector name |
| kPropertyInstanceVariable = 'V' // followed by instance variable name |
| kPropertyType = 't' // followed by old-style type encoding. |
| kPropertyWeak = 'W' // 'weak' property |
| kPropertyStrong = 'P' // property GC'able |
| }; */ |
| |
| static tree |
| objc_v2_encode_prop_attr (tree property) |
| { |
| const char *string; |
| tree type = TREE_TYPE (property); |
| obstack_1grow (&util_obstack, 'T'); |
| /* APPLE LOCAL radar 5002848 */ |
| generating_property_type_encoding = 1; |
| encode_type (type, obstack_object_size (&util_obstack), |
| OBJC_ENCODE_INLINE_DEFS); |
| /* APPLE LOCAL radar 5002848 */ |
| generating_property_type_encoding = 0; |
| |
| if (PROPERTY_READONLY (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",R", 2); |
| |
| if (flag_objc_new_property) |
| { |
| if (PROPERTY_COPY (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",C", 2); |
| } |
| else if (PROPERTY_BYCOPY (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",C", 2); |
| |
| if (flag_objc_new_property) |
| { |
| if (PROPERTY_RETAIN (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",&", 2); |
| } |
| else if (PROPERTY_BYREF (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",&", 2); |
| |
| if (PROPERTY_DYNAMIC (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",D", 2); |
| |
| if (PROPERTY_GETTER_NAME (property)) |
| { |
| obstack_grow (&util_obstack, ",G", 2); |
| string = IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (property)); |
| obstack_grow (&util_obstack, string, strlen (string)); |
| } |
| if (PROPERTY_SETTER_NAME (property)) |
| { |
| obstack_grow (&util_obstack, ",S", 2); |
| string = IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (property)); |
| obstack_grow (&util_obstack, string, strlen (string)); |
| } |
| if (PROPERTY_IVAR_NAME (property)) |
| { |
| obstack_grow (&util_obstack, ",V", 2); |
| if (PROPERTY_IVAR_NAME (property) != boolean_true_node) |
| string = IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (property)); |
| else |
| string = objc_build_property_ivar_name (property); |
| obstack_grow (&util_obstack, string, strlen (string)); |
| } |
| if (flag_objc_new_property) |
| { |
| if (flag_objc_gc) |
| { |
| int g = objc_is_gcable_type (type); |
| if (g == -1) |
| obstack_grow (&util_obstack, ",W", 2); |
| else if (g == 1) |
| obstack_grow (&util_obstack, ",P", 2); |
| } |
| } |
| else if (PROPERTY_WEAK (property) == boolean_true_node) |
| obstack_grow (&util_obstack, ",W", 2); |
| |
| obstack_1grow (&util_obstack, 0); /* null terminate string */ |
| string = obstack_finish (&util_obstack); |
| obstack_free (&util_obstack, util_firstobj); |
| return get_identifier (string); |
| } |
| |
| /* This routine builds the initializer list to initlize 'struct _prop_t prop_list[]' |
| field of 'struct _prop_list_t' meta-data. */ |
| |
| static tree |
| build_v2_property_table_initializer (tree type) |
| { |
| tree x; |
| tree initlist = NULL_TREE; |
| generating_instance_variables = 1; |
| for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) |
| { |
| /* NOTE! sections where property name/attribute go MUST change later. */ |
| tree name_ident = PROPERTY_NAME (x); |
| tree elemlist = tree_cons (NULL_TREE, |
| add_objc_string (name_ident, prop_names_attr), |
| NULL_TREE); |
| tree attribute = objc_v2_encode_prop_attr (x); |
| elemlist = tree_cons (NULL_TREE, add_objc_string (attribute, prop_names_attr), |
| elemlist); |
| |
| initlist = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (elemlist)), |
| initlist); |
| } |
| generating_instance_variables = 0; |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| /* This routine builds the 'struct _prop_list_t' variable declaration and initializes |
| it to its initializer list. TYPE is 'struct _prop_list_t', NAME is internal name |
| of this variable, SIZE is number of properties for this class and LIST is the |
| initializer list for its 'prop_list' field. */ |
| |
| static tree |
| generate_v2_property_list (tree type, const char *name, int size, tree list) |
| { |
| tree decl, initlist; |
| int init_val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_property_template)); |
| |
| decl = start_var_decl (type, synth_id_with_class_suffix |
| (name, objc_implementation_context)); |
| |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, init_val)); |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); |
| initlist = tree_cons (NULL_TREE, list, initlist); |
| |
| finish_var_decl (decl, |
| objc_build_constructor (TREE_TYPE (decl), |
| nreverse (initlist))); |
| return decl; |
| } |
| |
| #define GC_IVAR_BUFSIZE 256 |
| |
| struct GC_IVAR { |
| unsigned int ivar_bytepos; |
| unsigned int ivar_size; |
| }; |
| |
| static int |
| ivar_bytepos_cmp (const void *a, const void *b) |
| { |
| HOST_WIDE_INT sa = ((struct GC_IVAR *)a)->ivar_bytepos; |
| HOST_WIDE_INT sb = ((struct GC_IVAR *)b)->ivar_bytepos; |
| |
| if (sa < sb) |
| return -1; |
| if (sa > sb) |
| return 1; |
| return 0; |
| } |
| |
| static void |
| objc_build_aggregate_ivar_layout (tree aggr_type, tree field_decl, |
| unsigned int base_byte_pos, |
| bool strong_ivar_layout, |
| struct GC_IVAR *ivar, |
| int *index, |
| struct GC_IVAR *sk_ivar, int *sk_index, |
| bool *hasUnion) |
| { |
| int iIndex = *index; |
| int iSkIndex = *sk_index; |
| unsigned int max_gc_union_ivar_size = 0; |
| tree max_field_decl = NULL_TREE; |
| unsigned int max_sk_union_ivar_size = 0; |
| tree max_sk_field_decl = NULL_TREE; |
| bool is_union = (aggr_type && TREE_CODE (aggr_type) == UNION_TYPE); |
| unsigned int base = 0; |
| if (is_union) |
| base = base_byte_pos + int_byte_position (field_decl); |
| |
| do { |
| tree type; |
| int strong; |
| /* Unnamed bitfields are ignored. */ |
| if (!DECL_NAME (field_decl) || DECL_BIT_FIELD_TYPE (field_decl)) |
| { |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| continue; |
| } |
| #ifdef OBJCPLUS |
| if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl)) |
| { |
| /* C++ static members, and things that are not field at all, |
| are not in the ivar map. */ |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| continue; |
| } |
| #endif |
| type = TREE_TYPE (field_decl); |
| if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE) |
| { |
| if (TREE_CODE (type) == UNION_TYPE) |
| *hasUnion = true; |
| objc_build_aggregate_ivar_layout (type, TYPE_FIELDS (type), |
| base_byte_pos + int_byte_position (field_decl), |
| strong_ivar_layout, |
| ivar, &iIndex, |
| sk_ivar, &iSkIndex, |
| hasUnion); |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| continue; |
| } |
| |
| strong = 0; |
| do |
| { |
| strong = objc_is_strong_p (type); |
| if (strong) |
| break; |
| if (TREE_CODE (type) == FUNCTION_TYPE) |
| break; |
| |
| if (objc_is_object_ptr (type)) |
| strong = (objc_is_strong_p (TREE_TYPE (type)) >= 0) ? 1 : -1; |
| type = TREE_TYPE (type); |
| } |
| while (!strong && type); |
| |
| if ((strong_ivar_layout && strong == 1) |
| || (!strong_ivar_layout && strong == -1)) |
| { |
| if (is_union) |
| { |
| unsigned int u_ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)) |
| / GET_MODE_SIZE (Pmode); |
| if (u_ivar_size > max_gc_union_ivar_size) |
| { |
| max_gc_union_ivar_size = u_ivar_size; |
| max_field_decl = field_decl; |
| } |
| } |
| else |
| { |
| gcc_assert (iIndex < GC_IVAR_BUFSIZE-1); |
| ivar[++iIndex].ivar_bytepos = base_byte_pos + int_byte_position (field_decl); |
| ivar[iIndex].ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)) |
| / GET_MODE_SIZE (Pmode); |
| } |
| } |
| else if ((strong_ivar_layout && strong <= 0) |
| || (!strong_ivar_layout && strong != -1)) |
| { |
| if (is_union) |
| { |
| unsigned int u_ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); |
| if (u_ivar_size > max_sk_union_ivar_size) |
| { |
| max_sk_union_ivar_size = u_ivar_size; |
| max_sk_field_decl = field_decl; |
| } |
| } |
| else |
| { |
| gcc_assert (iSkIndex < GC_IVAR_BUFSIZE-1); |
| sk_ivar[++iSkIndex].ivar_bytepos = base_byte_pos + int_byte_position (field_decl); |
| sk_ivar[iSkIndex].ivar_size = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); |
| } |
| } |
| |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| } |
| while (field_decl); |
| if (max_field_decl) |
| { |
| gcc_assert (iIndex < GC_IVAR_BUFSIZE-1); |
| ivar[++iIndex].ivar_bytepos = base_byte_pos + int_byte_position (max_field_decl); |
| ivar[iIndex].ivar_size = max_gc_union_ivar_size; |
| } |
| if (max_sk_field_decl) |
| { |
| gcc_assert (iSkIndex < GC_IVAR_BUFSIZE-1); |
| sk_ivar[++iSkIndex].ivar_bytepos = base_byte_pos + int_byte_position (max_sk_field_decl); |
| sk_ivar[iSkIndex].ivar_size = max_sk_union_ivar_size; |
| } |
| *index = iIndex; |
| *sk_index = iSkIndex; |
| } |
| |
| |
| /* This routine builds the ivar_layout (when STRONG_IVAR_LAYOUT is true), or otherwise |
| weak_ivar_layout and returns it in a c-string. The layout map displays which words |
| in ivar list must be skipped and which must be scanned by GC (see below). |
| String is built of bytes. Each byte is divided up in two nibbles (4-bit each). Left |
| nibble is count of words to skip and right nibble is count of words to scan. So, each |
| nibble represents up to 15 workds to skip or scan. Skipping the rest is represented |
| by a 0x00 byte which also ends the string. |
| |
| 1. when STRONG_IVAR_LAYOUT is true, following ivars are scanned: |
| - id, Class |
| - object * |
| - __strong anything |
| |
| 2. When STRONG_IVAR_LAYOUT is false, following ivars are scanned: |
| - __weak anything |
| */ |
| |
| static tree |
| objc_build_ivar_layout (bool strong_ivar_layout) |
| { |
| tree field_decl; |
| struct GC_IVAR ivar [GC_IVAR_BUFSIZE]; |
| struct GC_IVAR sk_ivar [GC_IVAR_BUFSIZE]; |
| unsigned int words_to_skip, words_to_scan; |
| int i; |
| int iIndex = -1; |
| int iSkIndex = -1; |
| struct skip_scan |
| { |
| unsigned int skip; |
| unsigned int scan; |
| } skip_scan [GC_IVAR_BUFSIZE]; |
| int iSkip_scan; |
| unsigned char byte; |
| const char *string; |
| bool hasUnion, bytesSkipped; |
| |
| if (!flag_objc_gc || !implementation_template) |
| return NULL_TREE; |
| |
| field_decl = CLASS_IVARS (implementation_template); |
| if (CLASS_SUPER_NAME (implementation_template)) |
| { |
| /* Must build an ivar-list of all ivars in the inheritiance hierarchy. */ |
| tree interface = implementation_template; |
| field_decl = copy_list (field_decl); |
| while (CLASS_SUPER_NAME (interface)) |
| { |
| interface = lookup_interface (CLASS_SUPER_NAME (interface)); |
| field_decl = chainon (copy_list (CLASS_IVARS (interface)), |
| field_decl); |
| } |
| } |
| if (!field_decl) |
| return NULL_TREE; |
| |
| hasUnion = false; |
| objc_build_aggregate_ivar_layout (NULL_TREE, field_decl, 0, strong_ivar_layout, |
| ivar, &iIndex, sk_ivar, &iSkIndex, &hasUnion); |
| |
| if (iIndex == -1) |
| { |
| /* Skip everything */ |
| return NULL_TREE; |
| } |
| |
| /* Must sort on byte position in case we encounterred a union nested in |
| the ivar list. */ |
| if (hasUnion && iIndex > 0) |
| qsort (ivar, iIndex+1, sizeof (struct GC_IVAR), ivar_bytepos_cmp); |
| |
| if (hasUnion && iSkIndex > 0) |
| qsort (sk_ivar, iSkIndex+1, sizeof (struct GC_IVAR), ivar_bytepos_cmp); |
| |
| /* Now build the string of skip/scan nibbles */ |
| /* Initialization */ |
| iSkip_scan = -1; |
| bytesSkipped = false; |
| if (iSkIndex >= 0) |
| bytesSkipped = ((sk_ivar[iSkIndex].ivar_bytepos + |
| sk_ivar[iSkIndex].ivar_size) > |
| (ivar[iIndex].ivar_bytepos + ivar[iIndex].ivar_size * GET_MODE_SIZE (Pmode))); |
| |
| if (ivar[0].ivar_bytepos == 0) |
| { |
| words_to_skip = 0; |
| words_to_scan = ivar[0].ivar_size; |
| } |
| else |
| { |
| words_to_skip = ivar[0].ivar_bytepos / GET_MODE_SIZE (Pmode); |
| words_to_scan = ivar[0].ivar_size; |
| } |
| |
| for (i=1; i <= iIndex; i++) |
| { |
| unsigned int tail_prev_gc_obj = ivar[i-1].ivar_bytepos + |
| ivar[i-1].ivar_size * GET_MODE_SIZE (Pmode); |
| if (ivar[i].ivar_bytepos == tail_prev_gc_obj) |
| { |
| /* consecutive 'scanned' object pointers. */ |
| words_to_scan += ivar[i].ivar_size; |
| } |
| else |
| { |
| /* Skip over 'gc'able object pointer which lay over each other. */ |
| if (tail_prev_gc_obj > ivar[i].ivar_bytepos) |
| continue; |
| /* Must skip over 1 or more words. We save current skip/scan values |
| and start a new pair. */ |
| gcc_assert (iSkip_scan < GC_IVAR_BUFSIZE-1); |
| skip_scan[++iSkip_scan].skip = words_to_skip; |
| skip_scan[iSkip_scan].scan = words_to_scan; |
| /* APPLE LOCAL begin radar 5109807 */ |
| /* Skip the hole */ |
| skip_scan[++iSkip_scan].skip = (ivar[i].ivar_bytepos - tail_prev_gc_obj) |
| / GET_MODE_SIZE (Pmode); |
| skip_scan[iSkip_scan].scan = 0; |
| words_to_skip = 0; |
| /* APPLE LOCAL end radar 5109807 */ |
| words_to_scan = ivar[i].ivar_size; |
| } |
| } |
| if (words_to_scan > 0) |
| { |
| gcc_assert (iSkip_scan < GC_IVAR_BUFSIZE-1); |
| skip_scan[++iSkip_scan].skip = words_to_skip; |
| skip_scan[iSkip_scan].scan = words_to_scan; |
| } |
| |
| /* Now generate the string */ |
| for (i = 0; i <= iSkip_scan; i++) |
| { |
| unsigned int skip_small = skip_scan[i].skip % 0xf; |
| unsigned int scan_small = skip_scan[i].scan % 0xf; |
| unsigned int skip_big = skip_scan[i].skip / 0xf; |
| unsigned int scan_big = skip_scan[i].scan / 0xf; |
| unsigned int both, ix; |
| if (skip_small > 0 || skip_big > 0) |
| bytesSkipped = true; |
| if (skip_small) |
| { |
| byte = skip_small << 4; |
| if (scan_big > 0) |
| { |
| byte |= 0xf; |
| --scan_big; |
| } |
| else if (scan_small) |
| { |
| byte |= scan_small; |
| scan_small = 0; |
| } |
| obstack_1grow (&util_obstack, byte); |
| } |
| if (scan_small) |
| { |
| byte = 0; |
| if (skip_big > 0) |
| { |
| byte = (0xf << 4); |
| --skip_big; |
| } |
| byte |= scan_small; |
| obstack_1grow (&util_obstack, byte); |
| } |
| /* Now do the rest of the biggies. */ |
| both = MIN (skip_big, scan_big); |
| if (both > 0) |
| { |
| skip_big -= both; |
| scan_big -= both; |
| } |
| for (ix = 0; ix < both; ix++) |
| obstack_1grow (&util_obstack, 0xff); |
| for (ix = 0; ix < skip_big; ix++) |
| obstack_1grow (&util_obstack, 0xf0); |
| for (ix = 0; ix < scan_big; ix++) |
| obstack_1grow (&util_obstack, 0x0f); |
| } |
| obstack_1grow (&util_obstack, 0); /* null terminate string */ |
| string = obstack_finish (&util_obstack); |
| obstack_free (&util_obstack, util_firstobj); |
| /* if ivar_layout bitmap is all 1 bits (nothing skipped) then use NULL as |
| final layout. */ |
| return (strong_ivar_layout && !bytesSkipped) |
| ? NULL_TREE |
| : add_objc_string (get_identifier (string), class_names); |
| } |
| |
| /** |
| This routine build following type: |
| |
| struct _objc_protocol_extension |
| { |
| uint32_t size; // sizeof (struct _objc_protocol_extension) |
| struct objc_method_list *optional_instance_methods; |
| struct objc_method_list *optional_class_methods; |
| struct objc_prop_list *instance_properties; |
| } |
| */ |
| |
| static void build_objc_protocol_extension_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_protocol_extension_template = start_struct (RECORD_TYPE, |
| get_identifier (UTAG_PROTOCOL_EXT)); |
| /* uint32_t size; */ |
| field_decl = create_field_decl (integer_type_node, "size"); |
| field_decl_chain = field_decl; |
| |
| /* struct objc_method_list *optional_instance_methods; */ |
| field_decl = create_field_decl (objc_method_list_ptr, "optional_instance_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_method_list *optional_class_methods; */ |
| field_decl = create_field_decl (objc_method_list_ptr, "optional_class_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_prop_list *instance_properties; */ |
| field_decl = create_field_decl (objc_prop_list_ptr, "instance_properties"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_protocol_extension_template, field_decl_chain, NULL_TREE); |
| } |
| |
| static tree |
| generate_objc_protocol_extension (tree proto_interface, tree optional_instance_meth, |
| tree optional_class_meth, tree instance_prop) |
| { |
| int size; |
| tree decl, initlist, expr; |
| |
| if (!optional_instance_meth && !optional_class_meth && !instance_prop) |
| return NULL_TREE; |
| |
| if (!objc_protocol_extension_template) |
| build_objc_protocol_extension_template (); |
| |
| /* uint32_t size */ |
| size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_protocol_extension_template)); |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); |
| |
| /* struct objc_method_list *optional_instance_methods; */ |
| if (!optional_instance_meth) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_method_list_ptr, build_unary_op (ADDR_EXPR, |
| optional_instance_meth, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* struct objc_method_list *optional_class_methods; */ |
| if (!optional_class_meth) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_method_list_ptr, build_unary_op (ADDR_EXPR, |
| optional_class_meth, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* struct objc_prop_list *instance_properties; */ |
| if (!instance_prop) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_prop_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_prop_list_ptr, build_unary_op (ADDR_EXPR, |
| instance_prop, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| decl = start_var_decl (objc_protocol_extension_template, |
| synth_id_with_class_suffix |
| ("_OBJC_PROTOCOLEXT", proto_interface)); |
| expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); |
| finish_var_decl (decl, expr); |
| return decl; |
| } |
| |
| /* This routine build following struct type: |
| struct _objc_class_ext |
| { |
| uint32_t size; // sizeof(struct _objc_class_ext) |
| const char *weak_ivar_layout; |
| struct _prop_list_t *properties; |
| } |
| */ |
| |
| static void |
| build_objc_class_ext_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_class_ext_template = start_struct (RECORD_TYPE, |
| get_identifier (UTAG_CLASS_EXT)); |
| |
| /* uint32_t size; */ |
| field_decl = create_field_decl (integer_type_node, "size"); |
| field_decl_chain = field_decl; |
| |
| /* const char *weak_ivar_layout; */ |
| field_decl = create_field_decl (string_type_node, "weak_ivar_layout"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _prop_list_t *properties; */ |
| field_decl |
| = create_field_decl (build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier(UTAG_PROPERTY_LIST))), |
| "properties"); |
| chainon (field_decl_chain, field_decl); |
| finish_struct (objc_class_ext_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* This routine declares UOBJC_CLASS_EXT_decl and initializes its 'size', |
| 'weak_ivar_layout' (with WEAK_IVAR_LAYOUT) and 'properties' (with |
| PROPERTY_LIST). |
| */ |
| |
| static tree |
| generate_objc_class_ext (tree property_list) |
| { |
| tree decl, initlist, expr; |
| int size; |
| tree weak_ivar_layout_tree; |
| |
| /* const char *weak_ivar_layout */ |
| weak_ivar_layout_tree = objc_build_ivar_layout (false); |
| if (!property_list && !weak_ivar_layout_tree) |
| return NULL_TREE; |
| |
| if (!objc_class_ext_template) |
| build_objc_class_ext_template (); |
| |
| /* uint32_t size */ |
| size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_class_ext_template)); |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); |
| |
| initlist = tree_cons (NULL_TREE, |
| (!weak_ivar_layout_tree ? build_int_cst (NULL_TREE, 0) |
| : weak_ivar_layout_tree), |
| initlist); |
| |
| /* struct _prop_list_t *properties; */ |
| if (!property_list) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_prop_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_prop_list_ptr, |
| build_unary_op (ADDR_EXPR, property_list, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| decl = start_var_decl (objc_class_ext_template, |
| synth_id_with_class_suffix |
| ("_OBJC_CLASSEXT", objc_implementation_context)); |
| expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); |
| finish_var_decl (decl, expr); |
| return decl; |
| } |
| |
| /* Top-level routine to generate property tables for each implementation. |
| PROTOCOL, if not NULL, is the PROTOCOL_INTERFACE_TYPE of the protocol |
| whose property meta-data must be generated, via @implementation <protoname> |
| syntax. */ |
| |
| static void |
| generate_v2_property_tables (tree protocol) |
| { |
| tree x, initlist, property_list_template; |
| int size = 0; |
| x = protocol ? CLASS_PROPERTY_DECL (protocol) |
| : IMPL_PROPERTY_DECL (objc_implementation_context); |
| for (; x; x = TREE_CHAIN (x)) |
| size++; |
| |
| if (size == 0) |
| { |
| UOBJC_V2_PROPERTY_decl = NULL_TREE; |
| return; |
| } |
| |
| if (!objc_v2_property_template) |
| objc_v2_property_template = build_v2_property_template (); |
| property_list_template = build_v2_property_list_template (objc_v2_property_template, |
| size); |
| initlist |
| = build_v2_property_table_initializer (objc_v2_property_template); |
| /* A property meta-data can be generated via @implementation <protoname> or |
| via implementation of an interface where properties are declaraed. Make sure |
| name of property meta-data is unique for each case. */ |
| UOBJC_V2_PROPERTY_decl = generate_v2_property_list ( |
| property_list_template, |
| protocol ? "_OBJC_$_PROP_PROTO_LIST" |
| : "_OBJC_$_PROP_LIST", |
| size, initlist); |
| } |
| |
| /* This routine merges properties undeclared in implementation from its interface |
| declaration. */ |
| |
| static void |
| objc_v2_merge_property (void) |
| { |
| tree property_decl; |
| tree interface = NULL_TREE; |
| tree x, y; |
| |
| gcc_assert (objc_implementation_context); |
| interface = lookup_interface (CLASS_NAME (objc_implementation_context)); |
| /* May be null due to some previously declared diagnostic. */ |
| if (!interface) |
| return; |
| |
| if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| interface = lookup_category (interface, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| if (!interface) |
| return; |
| } |
| |
| /* Check for properties declared in interface but not in implementations. |
| These are 'dynamic' properties. */ |
| for (x = CLASS_PROPERTY_DECL (interface); x; x = TREE_CHAIN (x)) |
| { |
| for (y = IMPL_PROPERTY_DECL (objc_implementation_context); y; y = TREE_CHAIN (y)) |
| if (PROPERTY_NAME (x) == PROPERTY_NAME (y)) |
| break; |
| if (y) |
| continue; |
| else if (flag_objc_new_property) |
| { |
| property_decl = copy_node (x); |
| /* Add the property to the list of properties for current implementation. */ |
| TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); |
| IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; |
| continue; |
| } |
| /* 'x' is dynamic propeperty. Add it to the list of properties for this |
| implementation. */ |
| property_decl = make_node (PROPERTY_DECL); |
| TREE_TYPE (property_decl) = TREE_TYPE (x); |
| PROPERTY_NAME (property_decl) = PROPERTY_NAME (x); |
| PROPERTY_READONLY (property_decl) = PROPERTY_READONLY (x); |
| PROPERTY_WEAK (property_decl) = PROPERTY_WEAK (x); |
| PROPERTY_BYCOPY (property_decl) = PROPERTY_BYCOPY (x); |
| PROPERTY_BYREF (property_decl) = PROPERTY_BYREF (x); |
| PROPERTY_DYNAMIC (property_decl) = PROPERTY_DYNAMIC (x); |
| PROPERTY_GETTER_NAME (property_decl) = NULL_TREE; |
| PROPERTY_SETTER_NAME (property_decl) = NULL_TREE; |
| PROPERTY_IVAR_NAME (property_decl) = PROPERTY_IVAR_NAME (x); |
| /* Add the property to the list of properties for current implementation. */ |
| TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); |
| IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; |
| } |
| return; |
| } |
| /* APPLE LOCAL end C* language */ |
| |
| void |
| objc_set_method_type (enum tree_code type) |
| { |
| objc_inherit_code = (type == PLUS_EXPR |
| ? CLASS_METHOD_DECL |
| : INSTANCE_METHOD_DECL); |
| } |
| |
| tree |
| objc_build_method_signature (tree rettype, tree selector, tree optparms) |
| { |
| return build_method_decl (objc_inherit_code, rettype, selector, optparms); |
| } |
| |
| /* APPLE LOCAL begin radar 4869979 */ |
| /* Return 'true' if chain of attributes includes 'bycopy' */ |
| static bool |
| objc_type_has_bycopy_attr (tree list) |
| { |
| tree p; |
| for (p = list; p; p = TREE_CHAIN (p)) |
| { |
| tree v = TREE_VALUE (p); |
| if (v && TREE_CODE (v) == IDENTIFIER_NODE |
| && !strcmp (IDENTIFIER_POINTER (v), "bycopy")) |
| return true; |
| } |
| return false; |
| } |
| |
| /* This routine issues a warning if instance method declaration has a 'bycopy' |
| attribute of an object which does not include 'NSCoding' protocol. */ |
| static void |
| objc_diagnose_bycopy_type (tree decl) |
| { |
| tree type = TREE_TYPE (decl); |
| if (type && TREE_CODE (type) == TREE_LIST) |
| { |
| tree p = TREE_PURPOSE (type); |
| if (p && TREE_CODE (p) == TREE_LIST) |
| { |
| if (objc_type_has_bycopy_attr (p)) |
| { |
| tree intf; |
| tree objc_class = objc_is_object_ptr (TREE_VALUE (type)); |
| if (objc_class && objc_is_class_name (objc_class) |
| && (intf = lookup_interface (objc_class))) |
| { |
| tree proto = lookup_protocol (get_identifier ("NSCoding")); |
| if (proto && !conforms_to_protocol (intf, proto)) |
| warning ("\"bycopy\" specified on instance method type of '%T' that does not conform to \"NSCoding\" protocol", |
| TREE_VALUE (type)); |
| } |
| } |
| } |
| } |
| } |
| /* APPLE LOCAL end radar 4869979 */ |
| |
| void |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| objc_add_method_declaration (tree decl, tree attributes) |
| { |
| if (!objc_interface_context) |
| fatal_error ("method declaration not in @interface context"); |
| |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| objc_decl_method_attributes (&decl, attributes, 0); |
| /* APPLE LOCAL begin C* language */ |
| objc_add_method (objc_interface_context, |
| decl, |
| objc_inherit_code == CLASS_METHOD_DECL, |
| objc_method_optional_flag); |
| /* APPLE LOCAL end C* language */ |
| /* APPLE LOCAL begin radar 4869979 */ |
| if (objc_interface_context && |
| TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE |
| && objc_inherit_code == INSTANCE_METHOD_DECL) |
| objc_diagnose_bycopy_type (decl); |
| /* APPLE LOCAL end radar 4869979 */ |
| } |
| |
| void |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| objc_start_method_definition (tree decl, tree attributes) |
| { |
| if (!objc_implementation_context) |
| fatal_error ("method definition not in @implementation context"); |
| |
| /* APPLE LOCAL begin radar 4290840 */ |
| if (decl != NULL_TREE && METHOD_SEL_NAME (decl) == error_mark_node) |
| return; |
| /* APPLE LOCAL end radar 4290840 */ |
| |
| /* APPLE LOCAL begin radar 4219590 */ |
| #ifndef OBJCPLUS |
| /* Indicate no valid break/continue context by setting these variables |
| to some non-null, non-label value. We'll notice and emit the proper |
| error message in c_finish_bc_stmt. */ |
| c_break_label = c_cont_label = size_zero_node; |
| #endif |
| /* APPLE LOCAL end radar 4219590 */ |
| |
| /* APPLE LOCAL begin radar 4529765 */ |
| if (attributes) |
| warning ("method attribute may be specified on method declarations only"); |
| /* APPLE LOCAL end radar 4529765 */ |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| objc_decl_method_attributes (&decl, attributes, 0); |
| objc_add_method (objc_implementation_context, |
| decl, |
| /* APPLE LOCAL C* language */ |
| objc_inherit_code == CLASS_METHOD_DECL, 0); |
| start_method_def (decl); |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| /* APPLE LOCAL radar 4581680 */ |
| if (flag_objc_abi == 2 && objc_inherit_code == CLASS_METHOD_DECL) |
| { |
| /* Insert declaration of class method "load" in one of the __nonlazy_class |
| or __nonlazy_category lists. */ |
| tree id = DECL_NAME (decl); |
| if (id && TREE_CODE (id) == IDENTIFIER_NODE) |
| { |
| const char *name = IDENTIFIER_POINTER (id); |
| if (!strcmp (name, "load")) |
| CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) = decl; |
| } |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| } |
| |
| void |
| objc_add_instance_variable (tree decl) |
| { |
| (void) add_instance_variable (objc_ivar_context, |
| objc_public_flag, |
| decl); |
| } |
| |
| /* Return 1 if IDENT is an ObjC/ObjC++ reserved keyword in the context of |
| an '@'. */ |
| |
| int |
| objc_is_reserved_word (tree ident) |
| { |
| unsigned char code = C_RID_CODE (ident); |
| |
| return (OBJC_IS_AT_KEYWORD (code) |
| #ifdef OBJCPLUS |
| /* APPLE LOCAL radar 4564694 */ |
| || code == RID_AT_PACKAGE |
| || code == RID_CLASS || code == RID_PUBLIC |
| || code == RID_PROTECTED || code == RID_PRIVATE |
| || code == RID_TRY || code == RID_THROW || code == RID_CATCH |
| #endif |
| ); |
| } |
| |
| /* Return true if TYPE is 'id'. */ |
| |
| static bool |
| objc_is_object_id (tree type) |
| { |
| return OBJC_TYPE_NAME (type) == objc_object_id; |
| } |
| |
| static bool |
| objc_is_class_id (tree type) |
| { |
| return OBJC_TYPE_NAME (type) == objc_class_id; |
| } |
| |
| |
| /* APPLE LOCAL begin mainline */ |
| /* The 'objc_types_compatible_p' and 'objc_comptypes' routines |
| have been removed. */ |
| |
| /* Construct a C struct with same name as CLASS, a base struct with tag |
| SUPER_NAME (if any), and FIELDS indicated. */ |
| |
| static tree |
| objc_build_struct (tree class, tree fields, tree super_name) |
| { |
| tree name = CLASS_NAME (class); |
| tree s = start_struct (RECORD_TYPE, name); |
| tree super = (super_name ? xref_tag (RECORD_TYPE, super_name) : NULL_TREE); |
| tree t, objc_info = NULL_TREE; |
| |
| /* APPLE LOCAL begin radar 5025001 */ |
| if (flag_objc_abi == 2 && TREE_CODE (class) == CLASS_INTERFACE_TYPE |
| && fields != NULL_TREE) |
| { |
| /* append char :0; field if last field is a bit field. */ |
| tree last = fields; |
| while (TREE_CHAIN (last)) |
| last = TREE_CHAIN (last); |
| gcc_assert (TREE_CODE (last) == FIELD_DECL); |
| if (DECL_INITIAL (last) && DECL_INITIAL (last) != error_mark_node) |
| { |
| tree bf_zero = build_decl (FIELD_DECL, NULL_TREE, char_type_node); |
| DECL_INITIAL (bf_zero) = size_zero_node; |
| SET_DECL_C_BIT_FIELD (bf_zero); |
| DECL_NONADDRESSABLE_P (bf_zero) = 1; |
| TREE_CHAIN (last) = bf_zero; |
| } |
| } |
| /* APPLE LOCAL end radar 5025001 */ |
| |
| if (super) |
| { |
| /* Prepend a packed variant of the base class into the layout. This |
| is necessary to preserve ObjC ABI compatibility. */ |
| tree base = build_decl (FIELD_DECL, NULL_TREE, super); |
| tree field = TYPE_FIELDS (super); |
| |
| while (field && TREE_CHAIN (field) |
| && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) |
| field = TREE_CHAIN (field); |
| |
| /* For ObjC ABI purposes, the "packed" size of a base class is the |
| the sum of the offset and the size (in bits) of the last field |
| in the class. */ |
| DECL_SIZE (base) |
| = (field && TREE_CODE (field) == FIELD_DECL |
| ? size_binop (PLUS_EXPR, |
| size_binop (PLUS_EXPR, |
| size_binop |
| (MULT_EXPR, |
| convert (bitsizetype, |
| DECL_FIELD_OFFSET (field)), |
| bitsize_int (BITS_PER_UNIT)), |
| DECL_FIELD_BIT_OFFSET (field)), |
| DECL_SIZE (field)) |
| : bitsize_zero_node); |
| DECL_SIZE_UNIT (base) |
| = size_binop (FLOOR_DIV_EXPR, convert (sizetype, DECL_SIZE (base)), |
| size_int (BITS_PER_UNIT)); |
| DECL_ARTIFICIAL (base) = 1; |
| DECL_ALIGN (base) = 1; |
| DECL_FIELD_CONTEXT (base) = s; |
| /* APPLE LOCAL begin radar 4477797 */ |
| if (write_symbols == DWARF2_DEBUG) |
| DECL_IGNORED_P (base) = 1; |
| /* APPLE LOCAL end radar 4477797 */ |
| #ifdef OBJCPLUS |
| DECL_FIELD_IS_BASE (base) = 1; |
| |
| if (fields) |
| TREE_NO_WARNING (fields) = 1; /* Suppress C++ ABI warnings -- we */ |
| #endif /* are following the ObjC ABI here. */ |
| TREE_CHAIN (base) = fields; |
| fields = base; |
| } |
| |
| /* NB: Calling finish_struct() may cause type TYPE_LANG_SPECIFIC fields |
| in all variants of this RECORD_TYPE to be clobbered, but it is therein |
| that we store protocol conformance info (e.g., 'NSObject <MyProtocol>'). |
| Hence, we must squirrel away the ObjC-specific information before calling |
| finish_struct(), and then reinstate it afterwards. */ |
| |
| /* APPLE LOCAL begin radar 4945770 */ |
| for (t = TYPE_NEXT_VARIANT (s); t && TYPE_LANG_SPECIFIC (t) && TYPE_OBJC_INFO (t); |
| t = TYPE_NEXT_VARIANT (t)) |
| /* APPLE LOCAL end radar 4945770 */ |
| objc_info |
| = chainon (objc_info, |
| build_tree_list (NULL_TREE, TYPE_OBJC_INFO (t))); |
| |
| /* Point the struct at its related Objective-C class. */ |
| INIT_TYPE_OBJC_INFO (s); |
| TYPE_OBJC_INTERFACE (s) = class; |
| |
| s = finish_struct (s, fields, NULL_TREE); |
| |
| /* APPLE LOCAL radar 4945770 */ |
| for (t = TYPE_NEXT_VARIANT (s); t && objc_info; |
| t = TYPE_NEXT_VARIANT (t), objc_info = TREE_CHAIN (objc_info)) |
| { |
| TYPE_OBJC_INFO (t) = TREE_VALUE (objc_info); |
| /* Replace the IDENTIFIER_NODE with an actual @interface. */ |
| TYPE_OBJC_INTERFACE (t) = class; |
| } |
| |
| /* APPLE LOCAL begin radar 4310884 */ |
| /* Above hack in saving and restoring of objc_info has the nasty side-effect of |
| moving the protocol conformance info (e.g., 'NSObject <MyProtocol>') to current |
| type that is being formed. This is because, finish_struct makes all variants' |
| TYPE_LANG_SPECIFIC point to main variant's TYPE_LANG_SPECIFIC. So, we just |
| build and initialize a new TYPE_LANG_SPECIFIC object for the current class |
| being formed. */ |
| if (TYPE_MAIN_VARIANT (s) == s && TYPE_NEXT_VARIANT (s)) |
| { |
| TYPE_LANG_SPECIFIC (s) = (struct lang_type *)0; |
| INIT_TYPE_OBJC_INFO (s); |
| TYPE_OBJC_INTERFACE (s) = class; |
| } |
| /* APPLE LOCAL end radar 4310884 */ |
| |
| /* Use TYPE_BINFO structures to point at the super class, if any. */ |
| objc_xref_basetypes (s, super); |
| |
| /* Mark this struct as a class template. */ |
| CLASS_STATIC_TEMPLATE (class) = s; |
| |
| return s; |
| } |
| |
| /* Build a type differing from TYPE only in that TYPE_VOLATILE is set. |
| Unlike tree.c:build_qualified_type(), preserve TYPE_LANG_SPECIFIC in the |
| process. */ |
| static tree |
| objc_build_volatilized_type (tree type) |
| { |
| tree t; |
| |
| /* Check if we have not constructed the desired variant already. */ |
| for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) |
| { |
| /* The type qualifiers must (obviously) match up. */ |
| if (!TYPE_VOLATILE (t) |
| || (TYPE_READONLY (t) != TYPE_READONLY (type)) |
| || (TYPE_RESTRICT (t) != TYPE_RESTRICT (type))) |
| continue; |
| |
| /* For pointer types, the pointees (and hence their TYPE_LANG_SPECIFIC |
| info, if any) must match up. */ |
| if (POINTER_TYPE_P (t) |
| && (TREE_TYPE (t) != TREE_TYPE (type))) |
| continue; |
| |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* Only match up the types which were previously volatilized in similar fashion and not |
| because they were declared as such. */ |
| if (!lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (t))) |
| continue; |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| /* Everything matches up! */ |
| return t; |
| } |
| |
| /* Ok, we could not re-use any of the pre-existing variants. Create |
| a new one. */ |
| t = build_variant_type_copy (type); |
| TYPE_VOLATILE (t) = 1; |
| /* APPLE LOCAL begin radar 4204796 */ |
| TYPE_ATTRIBUTES (t) = merge_attributes (TYPE_ATTRIBUTES (type), |
| tree_cons (get_identifier ("objc_volatilized"), |
| NULL_TREE, |
| NULL_TREE)); |
| if (TREE_CODE (t) == ARRAY_TYPE) |
| TREE_TYPE (t) = objc_build_volatilized_type (TREE_TYPE (t)); |
| /* APPLE LOCAL end radar 4204796 */ |
| return t; |
| } |
| |
| /* Mark DECL as being 'volatile' for purposes of Darwin |
| _setjmp()/_longjmp() exception handling. Called from |
| objc_mark_locals_volatile(). */ |
| void |
| objc_volatilize_decl (tree decl) |
| { |
| /* Do not mess with variables that are 'static' or (already) |
| 'volatile'. */ |
| if (!TREE_THIS_VOLATILE (decl) && !TREE_STATIC (decl) |
| && (TREE_CODE (decl) == VAR_DECL |
| || TREE_CODE (decl) == PARM_DECL)) |
| { |
| tree t = TREE_TYPE (decl); |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* code removed */ |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| t = objc_build_volatilized_type (t); |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* code removed */ |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| TREE_TYPE (decl) = t; |
| TREE_THIS_VOLATILE (decl) = 1; |
| TREE_SIDE_EFFECTS (decl) = 1; |
| DECL_REGISTER (decl) = 0; |
| #ifndef OBJCPLUS |
| C_DECL_REGISTER (decl) = 0; |
| #endif |
| } |
| } |
| |
| /* APPLE LOCAL begin radar 4697411 */ |
| /* This routine sets the "objc_volatilized" attribute on COMPONENT_REF |
| node if 1) it is not already 'volatile' and 2) datum node |
| has its "objc_volatilized" attribute set. |
| */ |
| void |
| objc_volatilize_component_ref (tree cref, tree member_type) |
| { |
| tree object, type; |
| |
| if (TYPE_VOLATILE (member_type)) |
| return; |
| object = TREE_OPERAND (cref, 0); |
| if (TREE_THIS_VOLATILE (object)) |
| { |
| type = TREE_TYPE (object); |
| if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (type))) |
| { |
| member_type = objc_build_volatilized_type (member_type); |
| TREE_TYPE (cref) = member_type; |
| TREE_THIS_VOLATILE (cref) = 1; |
| TREE_SIDE_EFFECTS (cref) = 1; |
| } |
| } |
| return; |
| } |
| /* APPLE LOCAL end radar 4697411 */ |
| |
| /* Check if protocol PROTO is adopted (directly or indirectly) by class CLS |
| (including its categoreis and superclasses) or by object type TYP. |
| Issue a warning if PROTO is not adopted anywhere and WARN is set. */ |
| |
| static bool |
| objc_lookup_protocol (tree proto, tree cls, tree typ, bool warn) |
| { |
| bool class_type = (cls != NULL_TREE); |
| |
| while (cls) |
| { |
| tree c; |
| |
| /* Check protocols adopted by the class and its categories. */ |
| for (c = cls; c; c = CLASS_CATEGORY_LIST (c)) |
| { |
| if (lookup_protocol_in_reflist (CLASS_PROTOCOL_LIST (c), proto)) |
| return true; |
| } |
| |
| /* Repeat for superclasses. */ |
| cls = lookup_interface (CLASS_SUPER_NAME (cls)); |
| } |
| |
| /* Check for any protocols attached directly to the object type. */ |
| if (TYPE_HAS_OBJC_INFO (typ)) |
| { |
| if (lookup_protocol_in_reflist (TYPE_OBJC_PROTOCOL_LIST (typ), proto)) |
| return true; |
| } |
| |
| if (warn) |
| { |
| strcpy (errbuf, class_type ? "class \'" : "type \'"); |
| gen_type_name_0 (class_type ? typ : TYPE_POINTER_TO (typ)); |
| strcat (errbuf, "\' does not "); |
| /* NB: Types 'id' and 'Class' cannot reasonably be described as |
| "implementing" a given protocol, since they do not have an |
| implementation. */ |
| strcat (errbuf, class_type ? "implement" : "conform to"); |
| strcat (errbuf, " the \'"); |
| strcat (errbuf, IDENTIFIER_POINTER (PROTOCOL_NAME (proto))); |
| strcat (errbuf, "\' protocol"); |
| warning (errbuf); |
| } |
| |
| return false; |
| } |
| |
| /* Check if class RCLS and instance struct type RTYP conform to at least the |
| same protocols that LCLS and LTYP conform to. */ |
| |
| static bool |
| objc_compare_protocols (tree lcls, tree ltyp, tree rcls, tree rtyp, bool warn) |
| { |
| tree p; |
| bool have_lproto = false; |
| |
| while (lcls) |
| { |
| /* NB: We do _not_ look at categories defined for LCLS; these may or |
| may not get loaded in, and therefore it is unreasonable to require |
| that RCLS/RTYP must implement any of their protocols. */ |
| for (p = CLASS_PROTOCOL_LIST (lcls); p; p = TREE_CHAIN (p)) |
| { |
| have_lproto = true; |
| |
| if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn)) |
| return warn; |
| } |
| |
| /* Repeat for superclasses. */ |
| lcls = lookup_interface (CLASS_SUPER_NAME (lcls)); |
| } |
| |
| /* Check for any protocols attached directly to the object type. */ |
| if (TYPE_HAS_OBJC_INFO (ltyp)) |
| { |
| for (p = TYPE_OBJC_PROTOCOL_LIST (ltyp); p; p = TREE_CHAIN (p)) |
| { |
| have_lproto = true; |
| |
| if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn)) |
| return warn; |
| } |
| } |
| |
| /* NB: If LTYP and LCLS have no protocols to search for, return 'true' |
| vacuously, _unless_ RTYP is a protocol-qualified 'id'. We can get |
| away with simply checking for 'id' or 'Class' (!RCLS), since this |
| routine will not get called in other cases. */ |
| return have_lproto || (rcls != NULL_TREE); |
| } |
| |
| /* APPLE LOCAL begin 4154928 */ |
| /* Given two types TYPE1 and TYPE2, return their least common ancestor. |
| Both TYPE1 and TYPE2 must be pointers, and already determined to be |
| compatible by objc_compare_types() below. */ |
| |
| tree |
| objc_common_type (tree type1, tree type2) |
| { |
| tree inner1 = TREE_TYPE (type1), inner2 = TREE_TYPE (type2); |
| |
| while (POINTER_TYPE_P (inner1)) |
| { |
| inner1 = TREE_TYPE (inner1); |
| inner2 = TREE_TYPE (inner2); |
| } |
| |
| /* If one type is derived from another, return the base type. */ |
| if (DERIVED_FROM_P (inner1, inner2)) |
| return type1; |
| else if (DERIVED_FROM_P (inner2, inner1)) |
| return type2; |
| |
| /* If both types are 'Class', return 'Class'. */ |
| if (objc_is_class_id (inner1) && objc_is_class_id (inner2)) |
| return objc_class_type; |
| |
| /* Otherwise, return 'id'. */ |
| return objc_object_type; |
| } |
| |
| /* APPLE LOCAL end 4154928 */ |
| /* Determine if it is permissible to assign (if ARGNO is greater than -3) |
| an instance of RTYP to an instance of LTYP or to compare the two |
| (if ARGNO is equal to -3), per ObjC type system rules. Before |
| returning 'true', this routine may issue warnings related to, e.g., |
| protocol conformance. When returning 'false', the routine must |
| produce absolutely no warnings; the C or C++ front-end will do so |
| instead, if needed. If either LTYP or RTYP is not an Objective-C type, |
| the routine must return 'false'. |
| |
| The ARGNO parameter is encoded as follows: |
| >= 1 Parameter number (CALLEE contains function being called); |
| 0 Return value; |
| -1 Assignment; |
| -2 Initialization; |
| APPLE LOCAL begin 4175534 |
| -3 Comparison (LTYP and RTYP may match in either direction); |
| -4 Silent comparison (for C++ overload resolution). |
| APPLE LOCAL end 4175534 |
| -5 Comparison of ivar and @synthesized property type/ |
| */ |
| |
| bool |
| objc_compare_types (tree ltyp, tree rtyp, int argno, tree callee) |
| { |
| tree lcls, rcls, lproto, rproto; |
| bool pointers_compatible; |
| |
| /* We must be dealing with pointer types */ |
| if (!POINTER_TYPE_P (ltyp) || !POINTER_TYPE_P (rtyp)) |
| return false; |
| |
| do |
| { |
| ltyp = TREE_TYPE (ltyp); /* Remove indirections. */ |
| rtyp = TREE_TYPE (rtyp); |
| } |
| while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp)); |
| |
| /* APPLE LOCAL begin 4174166 */ |
| /* We must also handle function pointers, since ObjC is a bit more |
| lenient than C or C++ on this. */ |
| if (TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE) |
| { |
| /* Return types must be covariant. */ |
| if (!comptypes (TREE_TYPE (ltyp), TREE_TYPE (rtyp)) |
| && !objc_compare_types (TREE_TYPE (ltyp), TREE_TYPE (rtyp), |
| argno, callee)) |
| return false; |
| |
| /* Argument types must be contravariant. */ |
| for (ltyp = TYPE_ARG_TYPES (ltyp), rtyp = TYPE_ARG_TYPES (rtyp); |
| ltyp && rtyp; ltyp = TREE_CHAIN (ltyp), rtyp = TREE_CHAIN (rtyp)) |
| { |
| if (!comptypes (TREE_VALUE (rtyp), TREE_VALUE (ltyp)) |
| && !objc_compare_types (TREE_VALUE (rtyp), TREE_VALUE (ltyp), |
| argno, callee)) |
| return false; |
| } |
| |
| return (ltyp == rtyp); |
| } |
| |
| /* APPLE LOCAL end 4174166 */ |
| /* Past this point, we are only interested in ObjC class instances, |
| or 'id' or 'Class'. */ |
| if (TREE_CODE (ltyp) != RECORD_TYPE || TREE_CODE (rtyp) != RECORD_TYPE) |
| return false; |
| |
| if (!objc_is_object_id (ltyp) && !objc_is_class_id (ltyp) |
| && !TYPE_HAS_OBJC_INFO (ltyp)) |
| return false; |
| |
| if (!objc_is_object_id (rtyp) && !objc_is_class_id (rtyp) |
| && !TYPE_HAS_OBJC_INFO (rtyp)) |
| return false; |
| |
| /* APPLE LOCAL begin 4175534 */ |
| /* Past this point, we are committed to returning 'true' to the caller |
| (unless performing a silent comparison; see below). However, we can |
| still warn about type and/or protocol mismatches. */ |
| /* APPLE LOCAL end 4175534 */ |
| |
| if (TYPE_HAS_OBJC_INFO (ltyp)) |
| { |
| lcls = TYPE_OBJC_INTERFACE (ltyp); |
| lproto = TYPE_OBJC_PROTOCOL_LIST (ltyp); |
| } |
| else |
| lcls = lproto = NULL_TREE; |
| |
| if (TYPE_HAS_OBJC_INFO (rtyp)) |
| { |
| rcls = TYPE_OBJC_INTERFACE (rtyp); |
| rproto = TYPE_OBJC_PROTOCOL_LIST (rtyp); |
| } |
| else |
| rcls = rproto = NULL_TREE; |
| |
| /* If we could not find an @interface declaration, we must have |
| only seen a @class declaration; for purposes of type comparison, |
| treat it as a stand-alone (root) class. */ |
| |
| if (lcls && TREE_CODE (lcls) == IDENTIFIER_NODE) |
| lcls = NULL_TREE; |
| |
| if (rcls && TREE_CODE (rcls) == IDENTIFIER_NODE) |
| rcls = NULL_TREE; |
| |
| /* If either type is an unqualified 'id', we're done. */ |
| if ((!lproto && objc_is_object_id (ltyp)) |
| || (!rproto && objc_is_object_id (rtyp))) |
| return true; |
| |
| pointers_compatible = (TYPE_MAIN_VARIANT (ltyp) == TYPE_MAIN_VARIANT (rtyp)); |
| |
| /* If the underlying types are the same, and at most one of them has |
| a protocol list, we do not need to issue any diagnostics. */ |
| if (pointers_compatible && (!lproto || !rproto)) |
| return true; |
| |
| /* If exactly one of the types is 'Class', issue a diagnostic; any |
| exceptions of this rule have already been handled. */ |
| if (objc_is_class_id (ltyp) ^ objc_is_class_id (rtyp)) |
| pointers_compatible = false; |
| /* Otherwise, check for inheritance relations. */ |
| else |
| { |
| if (!pointers_compatible) |
| pointers_compatible |
| = (objc_is_object_id (ltyp) || objc_is_object_id (rtyp)); |
| |
| if (!pointers_compatible) |
| pointers_compatible = DERIVED_FROM_P (ltyp, rtyp); |
| |
| /* APPLE LOCAL 4175534 */ |
| if (!pointers_compatible && argno <= -3 && argno != -5) |
| pointers_compatible = DERIVED_FROM_P (rtyp, ltyp); |
| } |
| |
| /* If the pointers match modulo protocols, check for protocol conformance |
| mismatches. */ |
| if (pointers_compatible) |
| { |
| pointers_compatible = objc_compare_protocols (lcls, ltyp, rcls, rtyp, |
| /* APPLE LOCAL 4175534 */ |
| (argno > -3 || argno == -5)); |
| |
| if (!pointers_compatible && argno == -3) |
| pointers_compatible = objc_compare_protocols (rcls, rtyp, lcls, ltyp, |
| /* APPLE LOCAL 4175534 */ |
| false); |
| } |
| |
| if (!pointers_compatible) |
| { |
| /* APPLE LOCAL begin 4175534 */ |
| /* The two pointers are not exactly compatible. Issue a warning, unless |
| we are performing a silent comparison, in which case return 'false' |
| instead. */ |
| /* APPLE LOCAL end 4175534 */ |
| switch (argno) |
| { |
| /* APPLE LOCAL begin 4175534 */ |
| case -5: |
| case -4: |
| return false; |
| |
| /* APPLE LOCAL end 4175534 */ |
| case -3: |
| warning ("comparison of distinct Objective-C types lacks a cast"); |
| break; |
| |
| case -2: |
| warning ("initialization from distinct Objective-C type"); |
| break; |
| |
| case -1: |
| warning ("assignment from distinct Objective-C type"); |
| break; |
| |
| case 0: |
| warning ("distinct Objective-C type in return"); |
| break; |
| |
| default: |
| warning ("passing argument %d of %qE from distinct " |
| "Objective-C type", argno, callee); |
| break; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* APPLE LOCAL begin radar 4229905 */ |
| /* This routine is similar to objc_compare_types except that function-pointers are |
| excluded. This is because, caller assumes that common types are of (id, Object*) |
| variety and calls objc_common_type to obtain a common type. There is no commonolty |
| between two function-pointers in this regard. */ |
| |
| bool |
| objc_have_common_type (tree ltyp, tree rtyp, int argno, tree callee) |
| { |
| if (objc_compare_types (ltyp, rtyp, argno, callee)) |
| { |
| /* exclude function-pointer types. */ |
| do |
| { |
| ltyp = TREE_TYPE (ltyp); /* Remove indirections. */ |
| rtyp = TREE_TYPE (rtyp); |
| } |
| while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp)); |
| return !(TREE_CODE (ltyp) == FUNCTION_TYPE && TREE_CODE (rtyp) == FUNCTION_TYPE); |
| } |
| return false; |
| } |
| /* APPLE LOCAL end radar 4229905 */ |
| |
| /* Check if LTYP and RTYP have the same type qualifiers. If either type |
| lives in the volatilized hash table, ignore the 'volatile' bit when |
| making the comparison. */ |
| |
| bool |
| objc_type_quals_match (tree ltyp, tree rtyp) |
| { |
| int lquals = TYPE_QUALS (ltyp), rquals = TYPE_QUALS (rtyp); |
| |
| /* APPLE LOCAL begin radar 4204796 */ |
| if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (ltyp))) |
| lquals &= ~TYPE_QUAL_VOLATILE; |
| |
| if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (rtyp))) |
| rquals &= ~TYPE_QUAL_VOLATILE; |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| return (lquals == rquals); |
| } |
| |
| #ifndef OBJCPLUS |
| /* Determine if CHILD is derived from PARENT. The routine assumes that |
| both parameters are RECORD_TYPEs, and is non-reflexive. */ |
| |
| static bool |
| objc_derived_from_p (tree parent, tree child) |
| { |
| parent = TYPE_MAIN_VARIANT (parent); |
| |
| for (child = TYPE_MAIN_VARIANT (child); |
| TYPE_BINFO (child) && BINFO_N_BASE_BINFOS (TYPE_BINFO (child));) |
| { |
| child = TYPE_MAIN_VARIANT (BINFO_TYPE (BINFO_BASE_BINFO |
| (TYPE_BINFO (child), |
| 0))); |
| |
| if (child == parent) |
| return true; |
| } |
| |
| return false; |
| } |
| #endif |
| |
| tree |
| objc_build_component_ref (tree datum, tree component) |
| { |
| /* If COMPONENT is NULL, the caller is referring to the anonymous |
| base class field. */ |
| if (!component) |
| { |
| tree base = TYPE_FIELDS (TREE_TYPE (datum)); |
| |
| return build3 (COMPONENT_REF, TREE_TYPE (base), datum, base, NULL_TREE); |
| } |
| |
| /* The 'build_component_ref' routine has been removed from the C++ |
| front-end, but 'finish_class_member_access_expr' seems to be |
| a worthy substitute. */ |
| #ifdef OBJCPLUS |
| return finish_class_member_access_expr (datum, component); |
| #else |
| return build_component_ref (datum, component); |
| #endif |
| } |
| |
| /* Recursively copy inheritance information rooted at BINFO. To do this, |
| we emulate the song and dance performed by cp/tree.c:copy_binfo(). */ |
| |
| static tree |
| objc_copy_binfo (tree binfo) |
| { |
| tree btype = BINFO_TYPE (binfo); |
| tree binfo2 = make_tree_binfo (BINFO_N_BASE_BINFOS (binfo)); |
| tree base_binfo; |
| int ix; |
| |
| BINFO_TYPE (binfo2) = btype; |
| BINFO_OFFSET (binfo2) = BINFO_OFFSET (binfo); |
| BINFO_BASE_ACCESSES (binfo2) = BINFO_BASE_ACCESSES (binfo); |
| |
| /* Recursively copy base binfos of BINFO. */ |
| for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++) |
| { |
| tree base_binfo2 = objc_copy_binfo (base_binfo); |
| |
| BINFO_INHERITANCE_CHAIN (base_binfo2) = binfo2; |
| BINFO_BASE_APPEND (binfo2, base_binfo2); |
| } |
| |
| return binfo2; |
| } |
| |
| /* Record superclass information provided in BASETYPE for ObjC class REF. |
| This is loosely based on cp/decl.c:xref_basetypes(). */ |
| |
| static void |
| objc_xref_basetypes (tree ref, tree basetype) |
| { |
| tree binfo = make_tree_binfo (basetype ? 1 : 0); |
| |
| TYPE_BINFO (ref) = binfo; |
| BINFO_OFFSET (binfo) = size_zero_node; |
| BINFO_TYPE (binfo) = ref; |
| |
| if (basetype) |
| { |
| tree base_binfo = objc_copy_binfo (TYPE_BINFO (basetype)); |
| |
| BINFO_INHERITANCE_CHAIN (base_binfo) = binfo; |
| BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, 1); |
| BINFO_BASE_APPEND (binfo, base_binfo); |
| BINFO_BASE_ACCESS_APPEND (binfo, access_public_node); |
| } |
| } |
| |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* code removed */ |
| /* APPLE LOCAL end radar 4204796 */ |
| |
| /* APPLE LOCAL end mainline */ |
| /* Called from finish_decl. */ |
| |
| void |
| objc_check_decl (tree decl) |
| { |
| tree type = TREE_TYPE (decl); |
| |
| if (TREE_CODE (type) != RECORD_TYPE) |
| return; |
| if (OBJC_TYPE_NAME (type) && (type = objc_is_class_name (OBJC_TYPE_NAME (type)))) |
| error ("statically allocated instance of Objective-C class %qs", |
| IDENTIFIER_POINTER (type)); |
| } |
| |
| /* APPLE LOCAL begin radar 4281748 */ |
| void |
| objc_check_global_decl (tree decl) |
| { |
| tree id = DECL_NAME (decl); |
| if (objc_is_class_name (id) && global_bindings_p()) |
| error ("redeclaration of Objective-C class %qs", IDENTIFIER_POINTER (id)); |
| } |
| /* APPLE LOCAL end radar 4281748 */ |
| |
| /* APPLE LOCAL begin radar 4330422 */ |
| /* Return a non-volatalized version of TYPE. */ |
| |
| tree |
| objc_non_volatilized_type (tree type) |
| { |
| if (lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (type))) |
| type = build_qualified_type (type, (TYPE_QUALS (type) & ~TYPE_QUAL_VOLATILE)); |
| return type; |
| } |
| /* APPLE LOCAL end radar 4330422 */ |
| |
| /* Construct a PROTOCOLS-qualified variant of INTERFACE, where INTERFACE may |
| either name an Objective-C class, or refer to the special 'id' or 'Class' |
| types. If INTERFACE is not a valid ObjC type, just return it unchanged. */ |
| |
| tree |
| objc_get_protocol_qualified_type (tree interface, tree protocols) |
| { |
| /* If INTERFACE is not provided, default to 'id'. */ |
| tree type = (interface ? objc_is_id (interface) : objc_object_type); |
| bool is_ptr = (type != NULL_TREE); |
| |
| if (!is_ptr) |
| { |
| type = objc_is_class_name (interface); |
| |
| if (type) |
| /* APPLE LOCAL begin 4216500 */ |
| { |
| /* If looking at a typedef, retrieve the precise type it |
| describes. */ |
| if (TREE_CODE (interface) == IDENTIFIER_NODE) |
| interface = identifier_global_value (interface); |
| |
| type = ((interface && TREE_CODE (interface) == TYPE_DECL |
| && DECL_ORIGINAL_TYPE (interface)) |
| ? DECL_ORIGINAL_TYPE (interface) |
| : xref_tag (RECORD_TYPE, type)); |
| } |
| /* APPLE LOCAL end 4216500 */ |
| else |
| return interface; |
| } |
| |
| if (protocols) |
| { |
| type = build_variant_type_copy (type); |
| |
| /* For pointers (i.e., 'id' or 'Class'), attach the protocol(s) |
| to the pointee. */ |
| if (is_ptr) |
| { |
| TREE_TYPE (type) = build_variant_type_copy (TREE_TYPE (type)); |
| TYPE_POINTER_TO (TREE_TYPE (type)) = type; |
| type = TREE_TYPE (type); |
| } |
| |
| /* Look up protocols and install in lang specific list. */ |
| DUP_TYPE_OBJC_INFO (type, TYPE_MAIN_VARIANT (type)); |
| /* APPLE LOCAL radar 4398221 */ |
| TYPE_OBJC_PROTOCOL_LIST (type) = lookup_and_install_protocols (protocols, false); |
| |
| /* For RECORD_TYPEs, point to the @interface; for 'id' and 'Class', |
| return the pointer to the new pointee variant. */ |
| if (is_ptr) |
| type = TYPE_POINTER_TO (type); |
| else |
| TYPE_OBJC_INTERFACE (type) |
| = TYPE_OBJC_INTERFACE (TYPE_MAIN_VARIANT (type)); |
| } |
| |
| return type; |
| } |
| |
| /* Check for circular dependencies in protocols. The arguments are |
| PROTO, the protocol to check, and LIST, a list of protocol it |
| conforms to. */ |
| |
| static void |
| check_protocol_recursively (tree proto, tree list) |
| { |
| tree p; |
| |
| for (p = list; p; p = TREE_CHAIN (p)) |
| { |
| tree pp = TREE_VALUE (p); |
| |
| if (TREE_CODE (pp) == IDENTIFIER_NODE) |
| pp = lookup_protocol (pp); |
| |
| if (pp == proto) |
| fatal_error ("protocol %qs has circular dependency", |
| IDENTIFIER_POINTER (PROTOCOL_NAME (pp))); |
| if (pp) |
| check_protocol_recursively (proto, PROTOCOL_LIST (pp)); |
| } |
| } |
| |
| /* Look up PROTOCOLS, and return a list of those that are found. |
| If none are found, return NULL. */ |
| |
| static tree |
| /* APPLE LOCAL radar 4398221 */ |
| lookup_and_install_protocols (tree protocols, bool defNeeded) |
| { |
| tree proto; |
| tree return_value = NULL_TREE; |
| |
| for (proto = protocols; proto; proto = TREE_CHAIN (proto)) |
| { |
| tree ident = TREE_VALUE (proto); |
| tree p = lookup_protocol (ident); |
| |
| if (!p) |
| error ("cannot find protocol declaration for %qs", |
| IDENTIFIER_POINTER (ident)); |
| else |
| /* APPLE LOCAL begin radar 4398221 */ |
| { |
| if (defNeeded && !PROTOCOL_DEFINED (p)) |
| warning ("no definition of protocol %qs is found", |
| IDENTIFIER_POINTER (ident)); |
| return_value = chainon (return_value, |
| build_tree_list (NULL_TREE, p)); |
| } |
| /* APPLE LOCAL end radar 4398221 */ |
| } |
| |
| return return_value; |
| } |
| |
| /* Create a declaration for field NAME of a given TYPE. */ |
| |
| static tree |
| create_field_decl (tree type, const char *name) |
| { |
| return build_decl (FIELD_DECL, get_identifier (name), type); |
| } |
| |
| /* Create a global, static declaration for variable NAME of a given TYPE. The |
| finish_var_decl() routine will need to be called on it afterwards. */ |
| |
| /* APPLE LOCAL begin radar 4431864 */ |
| static tree |
| start_var_decl (tree type, const char *name) |
| { |
| /* APPLE LOCAL begin LLVM */ |
| tree var = NULL_TREE; |
| #ifdef ENABLE_LLVM |
| /* Darwin linker prefers to use 'L' as a prefix. GCC codegen handles this |
| later while emitting symbols, but fix it here for llvm. */ |
| char *new_name; |
| if (name && strncmp (name, "_OBJC_", 6) == 0) { |
| new_name = alloca (strlen (name) + 2); |
| new_name[0] = 'L'; |
| strcpy (new_name + 1, name); |
| var = build_decl (VAR_DECL, get_identifier (new_name), type); |
| set_user_assembler_name (var, IDENTIFIER_POINTER (DECL_NAME (var))); |
| /* Let optimizer know that this var is not removable. */ |
| DECL_PRESERVE_P (var) = 1; |
| TREE_USED(var) = 1; |
| } |
| else |
| /* Fall through. Build using 'name' */ |
| #endif |
| var = build_decl (VAR_DECL, get_identifier (name), type); |
| /* APPLE LOCAL end LLVM */ |
| objc_set_global_decl_fields (var); |
| |
| return var; |
| } |
| |
| /* Utility routine to set global flags for a global, static declaration. */ |
| |
| static void |
| objc_set_global_decl_fields (tree var) |
| { |
| TREE_STATIC (var) = 1; |
| DECL_INITIAL (var) = error_mark_node; /* A real initializer is coming... */ |
| DECL_IGNORED_P (var) = 1; |
| DECL_ARTIFICIAL (var) = 1; |
| DECL_CONTEXT (var) = NULL_TREE; |
| #ifdef OBJCPLUS |
| DECL_THIS_STATIC (var) = 1; /* squash redeclaration errors */ |
| #endif |
| } |
| /* APPLE LOCAL end radar 4431864 */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* Create a globally visible definition for variable NAME of a given TYPE. The |
| finish_var_decl() routine will need to be called on it afterwards. */ |
| |
| static tree |
| create_global_decl (tree type, const char *name) |
| { |
| /* APPLE LOCAL begin radar 4431864 */ |
| tree id = get_identifier (name); |
| /* APPLE LOCAL radar 4441049 */ |
| tree var = hash_name_lookup (ivar_offset_hash_list, id); |
| if (var) |
| { |
| DECL_EXTERNAL (var) = 0; |
| /* APPLE LOCAL radar 4431864 */ |
| objc_set_global_decl_fields (var); |
| } |
| else |
| /* APPLE LOCAL begin radar 4441049 */ |
| { |
| var = start_var_decl (type, name); |
| hash_name_enter (ivar_offset_hash_list, var); |
| } |
| /* APPLE LOCAL end radar 4441049 */ |
| /* APPLE LOCAL end radar 4431864 */ |
| TREE_PUBLIC (var) = 1; |
| return var; |
| } |
| |
| /* Create a symbol with __attribute__ ((visibility ("hidden"))) |
| attribute (private extern) */ |
| |
| static tree |
| create_hidden_decl (tree type, const char *name) |
| { |
| tree decl = create_global_decl (type, name); |
| DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; |
| DECL_VISIBILITY_SPECIFIED (decl) = 1; |
| return decl; |
| } |
| |
| /* Create an extern declaration for variable NAME of a given TYPE. The |
| finish_var_decl() routine will need to be called on it afterwards. */ |
| |
| static tree |
| create_extern_decl (tree type, const char *name) |
| { |
| tree id = get_identifier (name); |
| /* APPLE LOCAL radar 4441049 */ |
| tree var = hash_name_lookup (ivar_offset_hash_list, id); |
| if (var) |
| return var; |
| /* Name not already declared. */ |
| var = build_decl (VAR_DECL, id, type); |
| DECL_EXTERNAL (var) = 1; |
| TREE_PUBLIC (var) = 1; |
| /* All external declarations are at file_scope to prevent |
| duplication of declarations; a common occurance for external |
| variables holding ivar offsets in the new abi. */ |
| pushdecl_top_level (var); |
| rest_of_decl_compilation (var, 0, 0); |
| /* APPLE LOCAL radar 4441049 */ |
| hash_name_enter (ivar_offset_hash_list, var); |
| return var; |
| } |
| |
| /* APPLE LOCAL begin radar 4947014 - objc atomic property */ |
| /* This routine declares prototypes: |
| id objc_getProperty (id, SEL, ptrdiff_t, bool) |
| void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) |
| void objc_copyStruct (void *, const void *, size_t, bool, bool) |
| */ |
| static void |
| declare_atomic_property_api (void) |
| { |
| tree func_type; |
| |
| umsg_GetAtomicProperty = lookup_name (get_identifier ("objc_getProperty")); |
| umsg_SetAtomicProperty = lookup_name (get_identifier ("objc_setProperty")); |
| umsg_CopyAtomicStruct = lookup_name (get_identifier ("objc_copyStruct")); |
| if (umsg_GetAtomicProperty && umsg_SetAtomicProperty && umsg_CopyAtomicStruct) |
| return; |
| |
| if (!umsg_GetAtomicProperty) |
| { |
| /* id objc_getProperty (id, SEL, ptrdiff_t, bool) */ |
| func_type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, long_integer_type_node, |
| tree_cons (NULL_TREE, boolean_type_node, NULL_TREE))))); |
| umsg_GetAtomicProperty = builtin_function ( |
| "objc_getProperty", |
| func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_GetAtomicProperty) = 0; |
| } |
| |
| if (!umsg_SetAtomicProperty) |
| { |
| /* void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) */ |
| func_type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, long_integer_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, boolean_type_node, |
| tree_cons (NULL_TREE, boolean_type_node, NULL_TREE))))))); |
| umsg_SetAtomicProperty = builtin_function ( |
| "objc_setProperty", |
| func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_SetAtomicProperty) = 0; |
| } |
| |
| if (!umsg_CopyAtomicStruct) |
| { |
| /* void objc_copyStruct (void *, const void *, size_t, bool, bool) */ |
| func_type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, ptr_type_node, |
| tree_cons (NULL_TREE, ptr_type_node, |
| tree_cons (NULL_TREE, long_unsigned_type_node, |
| tree_cons (NULL_TREE, boolean_type_node, |
| tree_cons (NULL_TREE, boolean_type_node, NULL_TREE)))))); |
| umsg_CopyAtomicStruct = builtin_function ( |
| "objc_copyStruct", |
| func_type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_CopyAtomicStruct) = 0; |
| } |
| return; |
| } |
| |
| /* This routine builds id <NSCopying> type. |
| It builds id <NSCopying> type by building forward protocol @protocol |
| NSCopying. */ |
| static tree |
| build_id_NSCopying_type (void) |
| { |
| if (!umsg_NSCopying_Type) |
| { |
| tree proto_name_list = tree_cons (NULL_TREE, get_identifier ("NSCopying"), NULL_TREE); |
| objc_declare_protocols (proto_name_list); |
| /* Build and return id <NSCopying> type: */ |
| umsg_NSCopying_Type = objc_get_protocol_qualified_type (lookup_name (get_identifier ("id")), |
| proto_name_list); |
| } |
| return umsg_NSCopying_Type; |
| } |
| |
| /* This routine returns true if struct/union contains an object pointer or a __strong pointer. */ |
| static bool |
| aggregate_contains_objc_pointer (tree type) |
| { |
| tree field; |
| field = TYPE_FIELDS (type); |
| |
| for (; field; field = TREE_CHAIN (field)) |
| { |
| #ifdef OBJCPLUS |
| if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field)) |
| continue; |
| #endif |
| type = TREE_TYPE (field); |
| if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE) |
| if (aggregate_contains_objc_pointer (type)) |
| return true; |
| if (objc_is_gcable_type (type) == 1) |
| return true; |
| } |
| return false; |
| } |
| |
| /* APPLE LOCAL end radar 4947014 - objc atomic property */ |
| |
| /* APPLE LOCAL begin radar 4625843 */ |
| |
| /* This routine declares prototypes: |
| id object_getProperty_bycopy (id, SEL, ptrdiff_t) |
| void object_setProperty_bycopy (id, SEL, id <NSCopying> , ptrdiff_t) |
| */ |
| static void |
| declare_prototype_property_bycopy (void) |
| { |
| tree bycopy_type; |
| |
| umsg_getProperty_bycopy = lookup_name (get_identifier ("object_getProperty_bycopy")); |
| umsg_setProperty_bycopy = lookup_name (get_identifier ("object_setProperty_bycopy")); |
| if (umsg_getProperty_bycopy && umsg_setProperty_bycopy) |
| return; |
| |
| if (!umsg_getProperty_bycopy) |
| { |
| /* id object_getProperty_bycopy (id, SEL, ptrdiff_t) */ |
| bycopy_type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, |
| long_integer_type_node, NULL_TREE)))); |
| umsg_getProperty_bycopy = builtin_function ( |
| "object_getProperty_bycopy", |
| bycopy_type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_getProperty_bycopy) = 0; |
| } |
| |
| if (!umsg_setProperty_bycopy) |
| { |
| /* Build id <NSCopying> type by building forward protocol @protocol NSCopying; */ |
| /* Build id <NSCopying> type: */ |
| tree type_id_NSCopying = build_id_NSCopying_type (); |
| /* void object_setProperty_bycopy (id, SEL, id <NSCopying> , ptrdiff_t) */ |
| bycopy_type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, type_id_NSCopying, |
| tree_cons (NULL_TREE, long_integer_type_node, |
| NULL_TREE))))); |
| umsg_setProperty_bycopy = builtin_function ( |
| "object_setProperty_bycopy", |
| bycopy_type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_setProperty_bycopy) = 0; |
| } |
| } |
| /* APPLE LOCAL end radar 4625843 */ |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* Finish off the variable declaration created by start_var_decl(). */ |
| |
| static void |
| finish_var_decl (tree var, tree initializer) |
| { |
| finish_decl (var, initializer, NULL_TREE); |
| /* Ensure that the variable actually gets output. */ |
| mark_decl_referenced (var); |
| /* Mark the decl to avoid "defined but not used" warning. */ |
| TREE_USED (var) = 1; |
| } |
| |
| /* Find the decl for the constant string class reference. This is only |
| used for the NeXT runtime. */ |
| |
| static tree |
| setup_string_decl (void) |
| { |
| char *name; |
| size_t length; |
| /* APPLE LOCAL begin radar 4719165 */ |
| const char *prefix = (flag_objc_abi == 2) |
| ? STRING_V2_OBJECT_GLOBAL_FORMAT |
| : STRING_OBJECT_GLOBAL_FORMAT; |
| |
| /* %s in format will provide room for terminating null */ |
| length = strlen (prefix) |
| + strlen (constant_string_class_name); |
| name = xmalloc (length); |
| sprintf (name, prefix, |
| constant_string_class_name); |
| constant_string_global_id = get_identifier (name); |
| string_class_decl = lookup_name (constant_string_global_id); |
| /* In OBJC2 abi constant string class reference refers to |
| class name for NSConstantString class. This declaration may not be |
| available yet (in fact it is not in most cases). So, declare an extern |
| OBJC_CLASS_$_NSConstantString in its place. */ |
| if (flag_objc_abi == 2 && !string_class_decl) |
| string_class_decl = create_extern_decl (objc_v2_class_template, name); |
| /* APPLE LOCAL end radar 4719165 */ |
| return string_class_decl; |
| } |
| |
| /* Purpose: "play" parser, creating/installing representations |
| of the declarations that are required by Objective-C. |
| |
| Model: |
| |
| type_spec--------->sc_spec |
| (tree_list) (tree_list) |
| | | |
| | | |
| identifier_node identifier_node */ |
| |
| static void |
| synth_module_prologue (void) |
| { |
| tree type; |
| enum debug_info_type save_write_symbols = write_symbols; |
| const struct gcc_debug_hooks *const save_hooks = debug_hooks; |
| |
| /* Suppress outputting debug symbols, because |
| dbxout_init hasn'r been called yet. */ |
| write_symbols = NO_DEBUG; |
| debug_hooks = &do_nothing_debug_hooks; |
| |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); /* extern "C" */ |
| #endif |
| |
| /* The following are also defined in <objc/objc.h> and friends. */ |
| |
| objc_object_id = get_identifier (TAG_OBJECT); |
| objc_class_id = get_identifier (TAG_CLASS); |
| |
| objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id); |
| objc_class_reference = xref_tag (RECORD_TYPE, objc_class_id); |
| |
| objc_object_type = build_pointer_type (objc_object_reference); |
| objc_class_type = build_pointer_type (objc_class_reference); |
| |
| objc_object_name = get_identifier (OBJECT_TYPEDEF_NAME); |
| objc_class_name = get_identifier (CLASS_TYPEDEF_NAME); |
| |
| /* Declare the 'id' and 'Class' typedefs. */ |
| |
| type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL, |
| objc_object_name, |
| objc_object_type)); |
| DECL_IN_SYSTEM_HEADER (type) = 1; |
| type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL, |
| objc_class_name, |
| objc_class_type)); |
| DECL_IN_SYSTEM_HEADER (type) = 1; |
| |
| /* Forward-declare '@interface Protocol'. */ |
| |
| type = get_identifier (PROTOCOL_OBJECT_CLASS_NAME); |
| objc_declare_class (tree_cons (NULL_TREE, type, NULL_TREE)); |
| objc_protocol_type = build_pointer_type (xref_tag (RECORD_TYPE, |
| type)); |
| |
| /* Declare type of selector-objects that represent an operation name. */ |
| |
| if (flag_next_runtime) |
| /* `struct objc_selector *' */ |
| objc_selector_type |
| = build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier (TAG_SELECTOR))); |
| else |
| /* `const struct objc_selector *' */ |
| objc_selector_type |
| = build_pointer_type |
| (build_qualified_type (xref_tag (RECORD_TYPE, |
| get_identifier (TAG_SELECTOR)), |
| TYPE_QUAL_CONST)); |
| |
| /* Declare receiver type used for dispatching messages to 'super'. */ |
| |
| /* `struct objc_super *' */ |
| objc_super_type = build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier (TAG_SUPER))); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Declare pointers to method and ivar lists. */ |
| objc_method_list_ptr = build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_METHOD_LIST))); |
| objc_method_proto_list_ptr |
| = build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_METHOD_PROTOTYPE_LIST))); |
| objc_ivar_list_ptr = build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_IVAR_LIST))); |
| /* APPLE LOCAL end mainline */ |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| objc_prop_list_ptr |
| = build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier ("_prop_list_t"))); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| objc_v2_ivar_list_ptr = build_pointer_type ( |
| xref_tag (RECORD_TYPE, |
| get_identifier ("_ivar_list_t"))); |
| } |
| |
| /* typedef id (*IMP)(id, SEL, ...); */ |
| objc_imp_type |
| = build_pointer_type |
| (build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| NULL_TREE)))); |
| /* APPLE LOCAL end ObjC new abi */ |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| /* TREE_NOTHROW is cleared for the message-sending functions, |
| because the function that gets called can throw in Obj-C++, or |
| could itself call something that can throw even in Obj-C. */ |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| |
| if (flag_next_runtime) |
| { |
| /* NB: In order to call one of the ..._stret (struct-returning) |
| functions, the function *MUST* first be cast to a signature that |
| corresponds to the actual ObjC method being invoked. This is |
| what is done by the build_objc_method_call() routine below. */ |
| |
| /* id objc_msgSend (id, SEL, ...); */ |
| /* id objc_msgSendNonNil (id, SEL, ...); */ |
| /* id objc_msgSend_stret (id, SEL, ...); */ |
| /* id objc_msgSendNonNil_stret (id, SEL, ...); */ |
| type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| NULL_TREE))); |
| umsg_decl = builtin_function (TAG_MSGSEND, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| umsg_nonnil_decl = builtin_function (TAG_MSGSEND_NONNIL, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| umsg_stret_decl = builtin_function (TAG_MSGSEND_STRET, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| umsg_nonnil_stret_decl = builtin_function (TAG_MSGSEND_NONNIL_STRET, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| /* APPLE LOCAL radar 4699834 */ |
| /* Removed _rtp suffix from objc_msgSend_fixup_rtp and variants */ |
| build_message_ref_template (); |
| /* id objc_msgSend_fixup (id, struct message_ref_t*, ...); */ |
| type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_v2_selector_type, |
| NULL_TREE))); |
| umsg_fixup_decl = builtin_function ("objc_msgSend_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_fixup_decl) = 0; |
| /* APPLE LOCAL begin radar 4557598 */ |
| umsg_fpret_fixup_decl = builtin_function ("objc_msgSend_fpret_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_fpret_fixup_decl) = 0; |
| /* APPLE LOCAL end radar 4557598 */ |
| |
| /* id objc_msgSend_stret_fixup (id, struct message_ref_t*, ...); */ |
| umsg_stret_fixup_decl = builtin_function ("objc_msgSend_stret_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_stret_fixup_decl) = 0; |
| |
| /* id objc_msgSendId_fixup (id, struct message_ref_t*, ...); */ |
| umsg_id_fixup_decl = builtin_function ("objc_msgSendId_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_id_fixup_decl) = 0; |
| |
| /* id objc_msgSendId_stret_fixup (id, struct message_ref_t*, ...); */ |
| umsg_id_stret_fixup_decl = builtin_function ("objc_msgSendId_stret_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_id_stret_fixup_decl) = 0; |
| |
| /* id objc_msgSendSuper2_fixup (struct objc_super *, struct message_ref_t*, ...); */ |
| type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_super_type, |
| tree_cons (NULL_TREE, objc_v2_super_selector_type, |
| NULL_TREE))); |
| umsg_id_super2_fixup_decl = builtin_function ("objc_msgSendSuper2_fixup", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_id_super2_fixup_decl) = 0; |
| /* id objc_msgSendSuper2_stret_fixup (struct objc_super *, struct message_ref_t*, ...); */ |
| umsg_id_super2_stret_fixup_decl = builtin_function ("objc_msgSendSuper2_stret_fixup", |
| type, 0, NOT_BUILT_IN, 0, |
| NULL_TREE); |
| TREE_NOTHROW (umsg_id_super2_stret_fixup_decl) = 0; |
| |
| /* APPLE LOCAL radar 4533974 - ObjC new protocol */ |
| /* code removed */ |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* APPLE LOCAL begin C* language */ |
| build_objc_fast_enum_state_type (); |
| |
| /* void objc_enumerationMutation (id) */ |
| type = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, objc_object_type, NULL_TREE)); |
| objc_enum_mutation_decl = builtin_function ( |
| "objc_enumerationMutation", |
| type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (objc_enum_mutation_decl) = 0; |
| |
| /* APPLE LOCAL begin radar 4591909 */ |
| /* id object_getProperty_byref (id, SEL, ptrdiff_t) */ |
| type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, |
| long_integer_type_node, NULL_TREE)))); |
| umsg_getProperty_byref = builtin_function ( |
| "object_getProperty_byref", |
| type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_getProperty_byref) = 0; |
| |
| /* void object_setProperty_byref (id, SEL, id, ptrdiff_t) */ |
| type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, long_integer_type_node, |
| NULL_TREE))))); |
| umsg_setProperty_byref = builtin_function ( |
| "object_setProperty_byref", |
| type, 0, NOT_BUILT_IN, 0, NULL_TREE); |
| TREE_NOTHROW (umsg_setProperty_byref) = 0; |
| /* APPLE LOCAL end radar 4591909 */ |
| |
| /* APPLE LOCAL end C* language */ |
| |
| /* APPLE LOCAL begin radar 4280641 */ |
| /* Not needed for ppc */ |
| umsg_fpret_decl = builtin_function (TAG_MSGSEND_FPRET, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (umsg_fpret_decl) = 0; |
| /* APPLE LOCAL end radar 4280641 */ |
| |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| /* These can throw, because the function that gets called can throw |
| in Obj-C++, or could itself call something that can throw even |
| in Obj-C. */ |
| TREE_NOTHROW (umsg_decl) = 0; |
| TREE_NOTHROW (umsg_nonnil_decl) = 0; |
| TREE_NOTHROW (umsg_stret_decl) = 0; |
| TREE_NOTHROW (umsg_nonnil_stret_decl) = 0; |
| |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| /* APPLE LOCAL begin mainline */ |
| /* id objc_msgSend_Fast (id, SEL, ...) |
| __attribute__ ((hard_coded_address (OFFS_MSGSEND_FAST))); */ |
| /* APPLE LOCAL begin radar 4590221 */ |
| if (OFFS_MSGSEND_FAST) |
| { |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| tree umsg_fast_decl; |
| umsg_fast_decl = build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST); |
| umsg_fast_decl = build_c_cast (build_pointer_type (TREE_TYPE (umsg_decl)), |
| umsg_fast_decl); |
| umsg_fast_decl = build_indirect_ref (umsg_fast_decl, "*"); |
| umsg_decl = umsg_fast_decl; |
| #else |
| umsg_decl = builtin_function (TAG_MSGSEND_FAST, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| TREE_NOTHROW (umsg_decl) = 0; |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| DECL_ATTRIBUTES (umsg_decl) |
| = tree_cons (get_identifier ("hard_coded_address"), |
| build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST), |
| NULL_TREE); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| } |
| /* APPLE LOCAL end radar 4590221 */ |
| /* APPLE LOCAL end mainline */ |
| |
| /* id objc_msgSendSuper (struct objc_super *, SEL, ...); */ |
| /* id objc_msgSendSuper_stret (struct objc_super *, SEL, ...); */ |
| type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_super_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| NULL_TREE))); |
| umsg_super_decl = builtin_function (TAG_MSGSENDSUPER, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| umsg_super_stret_decl = builtin_function (TAG_MSGSENDSUPER_STRET, |
| type, 0, NOT_BUILT_IN, 0, |
| NULL_TREE); |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| TREE_NOTHROW (umsg_super_decl) = 0; |
| TREE_NOTHROW (umsg_super_stret_decl) = 0; |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| } |
| else |
| { |
| /* GNU runtime messenger entry points. */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* code removed */ |
| /* APPLE LOCAL end ObjC new abi */ |
| /* IMP objc_msg_lookup (id, SEL); */ |
| type |
| /* APPLE LOCAL ObjC new abi */ |
| = build_function_type (objc_imp_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| OBJC_VOID_AT_END))); |
| umsg_decl = builtin_function (TAG_MSGSEND, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| TREE_NOTHROW (umsg_decl) = 0; |
| |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| /* IMP objc_msg_lookup_super (struct objc_super *, SEL); */ |
| type |
| /* APPLE LOCAL ObjC new abi */ |
| = build_function_type (objc_imp_type, |
| tree_cons (NULL_TREE, objc_super_type, |
| tree_cons (NULL_TREE, objc_selector_type, |
| OBJC_VOID_AT_END))); |
| umsg_super_decl = builtin_function (TAG_MSGSENDSUPER, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| /* APPLE LOCAL begin mainline 2005-10-20 4308031 */ |
| TREE_NOTHROW (umsg_super_decl) = 0; |
| |
| /* APPLE LOCAL end mainline 2005-10-20 4308031 */ |
| /* The following GNU runtime entry point is called to initialize |
| each module: |
| |
| __objc_exec_class (void *); */ |
| type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, ptr_type_node, |
| OBJC_VOID_AT_END)); |
| execclass_decl = builtin_function (TAG_EXECCLASS, |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| } |
| |
| /* id objc_getClass (const char *); */ |
| |
| type = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, |
| const_string_type_node, |
| OBJC_VOID_AT_END)); |
| |
| objc_get_class_decl |
| = builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| |
| /* id objc_getMetaClass (const char *); */ |
| |
| objc_get_meta_class_decl |
| = builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| |
| /* APPLE LOCAL begin radar 4698856 */ |
| if (flag_objc_abi == 2) |
| build_v2_class_template (); |
| /* APPLE LOCAL end radar 4698856 */ |
| |
| build_class_template (); |
| build_super_template (); |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| build_v2_protocol_template (); |
| build_v2_category_template (); |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| build_protocol_template (); |
| build_category_template (); |
| build_objc_exception_stuff (); |
| |
| if (flag_next_runtime) |
| build_next_objc_exception_stuff (); |
| |
| /* static SEL _OBJC_SELECTOR_TABLE[]; */ |
| |
| if (! flag_next_runtime) |
| build_selector_table_decl (); |
| |
| /* Forward declare constant_string_id and constant_string_type. */ |
| if (!constant_string_class_name) |
| constant_string_class_name = default_constant_string_class_name; |
| |
| constant_string_id = get_identifier (constant_string_class_name); |
| objc_declare_class (tree_cons (NULL_TREE, constant_string_id, NULL_TREE)); |
| |
| /* Pre-build the following entities - for speed/convenience. */ |
| self_id = get_identifier ("self"); |
| ucmd_id = get_identifier ("_cmd"); |
| /* APPLE LOCAL mainline */ |
| /* 'unused_list' removed. */ |
| |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif |
| |
| write_symbols = save_write_symbols; |
| debug_hooks = save_hooks; |
| /* APPLE LOCAL radar 4590221 */ |
| /* code removed */ |
| } |
| |
| /* Ensure that the ivar list for NSConstantString/NXConstantString |
| (or whatever was specified via `-fconstant-string-class') |
| contains fields at least as large as the following three, so that |
| the runtime can stomp on them with confidence: |
| |
| struct STRING_OBJECT_CLASS_NAME |
| { |
| Object isa; |
| char *cString; |
| unsigned int length; |
| }; */ |
| |
| static int |
| check_string_class_template (void) |
| { |
| /* APPLE LOCAL 4149909 */ |
| tree field_decl = objc_get_class_ivars (constant_string_id); |
| |
| #define AT_LEAST_AS_LARGE_AS(F, T) \ |
| (F && TREE_CODE (F) == FIELD_DECL \ |
| /* APPLE LOCAL 4149909 */ \ |
| && (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (F))) \ |
| >= TREE_INT_CST_LOW (TYPE_SIZE (T)))) |
| |
| if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node)) |
| return 0; |
| |
| field_decl = TREE_CHAIN (field_decl); |
| if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node)) |
| return 0; |
| |
| field_decl = TREE_CHAIN (field_decl); |
| return AT_LEAST_AS_LARGE_AS (field_decl, unsigned_type_node); |
| |
| #undef AT_LEAST_AS_LARGE_AS |
| } |
| |
| /* Avoid calling `check_string_class_template ()' more than once. */ |
| static GTY(()) int string_layout_checked; |
| |
| /* APPLE LOCAL begin 4149909 */ |
| /* Construct an internal string layout to be used as a template for |
| creating NSConstantString/NXConstantString instances. */ |
| |
| static tree |
| objc_build_internal_const_str_type (void) |
| { |
| tree type = (*lang_hooks.types.make_type) (RECORD_TYPE); |
| tree fields = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node); |
| tree field = build_decl (FIELD_DECL, NULL_TREE, ptr_type_node); |
| |
| TREE_CHAIN (field) = fields; fields = field; |
| field = build_decl (FIELD_DECL, NULL_TREE, unsigned_type_node); |
| TREE_CHAIN (field) = fields; fields = field; |
| /* NB: The finish_builtin_struct() routine expects FIELD_DECLs in |
| reverse order! */ |
| finish_builtin_struct (type, "__builtin_ObjCString", |
| fields, NULL_TREE); |
| |
| return type; |
| } |
| |
| /* APPLE LOCAL end 4149909 */ |
| /* Custom build_string which sets TREE_TYPE! */ |
| |
| static tree |
| my_build_string (int len, const char *str) |
| { |
| return fix_string_type (build_string (len, str)); |
| } |
| |
| |
| static hashval_t |
| string_hash (const void *ptr) |
| { |
| tree str = ((struct string_descriptor *)ptr)->literal; |
| const unsigned char *p = (const unsigned char *) TREE_STRING_POINTER (str); |
| int i, len = TREE_STRING_LENGTH (str); |
| hashval_t h = len; |
| |
| for (i = 0; i < len; i++) |
| h = ((h * 613) + p[i]); |
| |
| return h; |
| } |
| |
| static int |
| string_eq (const void *ptr1, const void *ptr2) |
| { |
| tree str1 = ((struct string_descriptor *)ptr1)->literal; |
| tree str2 = ((struct string_descriptor *)ptr2)->literal; |
| int len1 = TREE_STRING_LENGTH (str1); |
| |
| return (len1 == TREE_STRING_LENGTH (str2) |
| && !memcmp (TREE_STRING_POINTER (str1), TREE_STRING_POINTER (str2), |
| len1)); |
| } |
| |
| /* Given a chain of STRING_CST's, build a static instance of |
| NXConstantString which points at the concatenation of those |
| strings. We place the string object in the __string_objects |
| section of the __OBJC segment. The Objective-C runtime will |
| initialize the isa pointers of the string objects to point at the |
| NXConstantString class object. */ |
| |
| tree |
| objc_build_string_object (tree string) |
| { |
| tree initlist, constructor, constant_string_class; |
| int length; |
| tree fields, addr; |
| struct string_descriptor *desc, key; |
| void **loc; |
| |
| /* Prep the string argument. */ |
| string = fix_string_type (string); |
| TREE_SET_CODE (string, STRING_CST); |
| length = TREE_STRING_LENGTH (string) - 1; |
| |
| /* APPLE LOCAL begin constant cfstrings */ |
| /* The target may have different ideas on how to construct an |
| ObjC string literal. On Darwin (Mac OS X), for example, |
| we may wish to obtain a constant CFString reference instead. */ |
| constructor = (*targetm.construct_objc_string) (string); |
| /* APPLE LOCAL begin radar 4494634 */ |
| if (constructor) |
| return build1 (NOP_EXPR, objc_object_type, constructor); |
| /* APPLE LOCAL end radar 4494634 */ |
| /* APPLE LOCAL end constant cfstrings */ |
| |
| /* Check whether the string class being used actually exists and has the |
| correct ivar layout. */ |
| if (!string_layout_checked) |
| { |
| string_layout_checked = -1; |
| constant_string_class = lookup_interface (constant_string_id); |
| /* APPLE LOCAL 4149909 */ |
| internal_const_str_type = objc_build_internal_const_str_type (); |
| |
| if (!constant_string_class |
| || !(constant_string_type |
| = CLASS_STATIC_TEMPLATE (constant_string_class))) |
| error ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (constant_string_id)); |
| /* The NSConstantString/NXConstantString ivar layout is now known. */ |
| else if (!check_string_class_template ()) |
| error ("interface %qs does not have valid constant string layout", |
| IDENTIFIER_POINTER (constant_string_id)); |
| /* For the NeXT runtime, we can generate a literal reference |
| to the string class, don't need to run a constructor. */ |
| else if (flag_next_runtime && !setup_string_decl ()) |
| error ("cannot find reference tag for class %qs", |
| IDENTIFIER_POINTER (constant_string_id)); |
| else |
| { |
| string_layout_checked = 1; /* Success! */ |
| add_class_reference (constant_string_id); |
| } |
| } |
| |
| if (string_layout_checked == -1) |
| return error_mark_node; |
| |
| /* Perhaps we already constructed a constant string just like this one? */ |
| key.literal = string; |
| loc = htab_find_slot (string_htab, &key, INSERT); |
| desc = *loc; |
| |
| if (!desc) |
| { |
| tree var; |
| *loc = desc = ggc_alloc (sizeof (*desc)); |
| desc->literal = string; |
| |
| /* APPLE LOCAL begin 4149909 */ |
| /* GNU: (NXConstantString *) & ((__builtin_ObjCString) { NULL, string, length }) */ |
| /* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */ |
| fields = TYPE_FIELDS (internal_const_str_type); |
| /* APPLE LOCAL end 4149909 */ |
| initlist |
| = build_tree_list (fields, |
| flag_next_runtime |
| ? build_unary_op (ADDR_EXPR, string_class_decl, 0) |
| : build_int_cst (NULL_TREE, 0)); |
| fields = TREE_CHAIN (fields); |
| initlist = tree_cons (fields, build_unary_op (ADDR_EXPR, string, 1), |
| initlist); |
| fields = TREE_CHAIN (fields); |
| initlist = tree_cons (fields, build_int_cst (NULL_TREE, length), |
| initlist); |
| /* APPLE LOCAL 4149909 */ |
| constructor = objc_build_constructor (internal_const_str_type, |
| nreverse (initlist)); |
| TREE_INVARIANT (constructor) = true; |
| |
| if (!flag_next_runtime) |
| constructor |
| = objc_add_static_instance (constructor, constant_string_type); |
| else |
| { |
| var = build_decl (CONST_DECL, NULL, TREE_TYPE (constructor)); |
| DECL_INITIAL (var) = constructor; |
| TREE_STATIC (var) = 1; |
| pushdecl_top_level (var); |
| constructor = var; |
| } |
| desc->constructor = constructor; |
| } |
| |
| /* APPLE LOCAL begin 4149909 */ |
| addr = convert (build_pointer_type (constant_string_type), |
| build_unary_op (ADDR_EXPR, desc->constructor, 1)); |
| /* APPLE LOCAL end 4149909 */ |
| |
| return addr; |
| } |
| |
| /* Declare a static instance of CLASS_DECL initialized by CONSTRUCTOR. */ |
| |
| static GTY(()) int num_static_inst; |
| |
| static tree |
| objc_add_static_instance (tree constructor, tree class_decl) |
| { |
| tree *chain, decl; |
| char buf[256]; |
| |
| /* Find the list of static instances for the CLASS_DECL. Create one if |
| not found. */ |
| for (chain = &objc_static_instances; |
| *chain && TREE_VALUE (*chain) != class_decl; |
| chain = &TREE_CHAIN (*chain)); |
| if (!*chain) |
| { |
| *chain = tree_cons (NULL_TREE, class_decl, NULL_TREE); |
| add_objc_string (OBJC_TYPE_NAME (class_decl), class_names); |
| } |
| |
| sprintf (buf, "_OBJC_INSTANCE_%d", num_static_inst++); |
| decl = build_decl (VAR_DECL, get_identifier (buf), class_decl); |
| DECL_COMMON (decl) = 1; |
| TREE_STATIC (decl) = 1; |
| DECL_ARTIFICIAL (decl) = 1; |
| DECL_INITIAL (decl) = constructor; |
| |
| /* We may be writing something else just now. |
| Postpone till end of input. */ |
| DECL_DEFER_OUTPUT (decl) = 1; |
| pushdecl_top_level (decl); |
| rest_of_decl_compilation (decl, 1, 0); |
| |
| /* Add the DECL to the head of this CLASS' list. */ |
| TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, decl, TREE_PURPOSE (*chain)); |
| |
| return decl; |
| } |
| |
| /* Build a static constant CONSTRUCTOR |
| with type TYPE and elements ELTS. */ |
| |
| static tree |
| objc_build_constructor (tree type, tree elts) |
| { |
| tree constructor = build_constructor (type, elts); |
| |
| TREE_CONSTANT (constructor) = 1; |
| TREE_STATIC (constructor) = 1; |
| TREE_READONLY (constructor) = 1; |
| |
| #ifdef OBJCPLUS |
| /* Adjust for impedance mismatch. We should figure out how to build |
| CONSTRUCTORs that consistently please both the C and C++ gods. */ |
| if (!TREE_PURPOSE (elts)) |
| TREE_TYPE (constructor) = NULL_TREE; |
| TREE_HAS_CONSTRUCTOR (constructor) = 1; |
| #endif |
| |
| return constructor; |
| } |
| |
| /* Take care of defining and initializing _OBJC_SYMBOLS. */ |
| |
| /* Predefine the following data type: |
| |
| struct _objc_symtab |
| { |
| long sel_ref_cnt; |
| SEL *refs; |
| short cls_def_cnt; |
| short cat_def_cnt; |
| void *defs[cls_def_cnt + cat_def_cnt]; |
| }; */ |
| |
| static void |
| build_objc_symtab_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_symtab_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_SYMTAB)); |
| |
| /* long sel_ref_cnt; */ |
| field_decl = create_field_decl (long_integer_type_node, "sel_ref_cnt"); |
| field_decl_chain = field_decl; |
| |
| /* SEL *refs; */ |
| field_decl = create_field_decl (build_pointer_type (objc_selector_type), |
| "refs"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* short cls_def_cnt; */ |
| field_decl = create_field_decl (short_integer_type_node, "cls_def_cnt"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* short cat_def_cnt; */ |
| field_decl = create_field_decl (short_integer_type_node, |
| "cat_def_cnt"); |
| chainon (field_decl_chain, field_decl); |
| |
| if (imp_count || cat_count || !flag_next_runtime) |
| { |
| /* void *defs[imp_count + cat_count (+ 1)]; */ |
| /* NB: The index is one less than the size of the array. */ |
| int index = imp_count + cat_count |
| + (flag_next_runtime? -1: 0); |
| field_decl = create_field_decl |
| (build_array_type |
| (ptr_type_node, |
| build_index_type (build_int_cst (NULL_TREE, index))), |
| "defs"); |
| chainon (field_decl_chain, field_decl); |
| } |
| |
| finish_struct (objc_symtab_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* Create the initial value for the `defs' field of _objc_symtab. |
| This is a CONSTRUCTOR. */ |
| |
| static tree |
| init_def_list (tree type) |
| { |
| tree expr, initlist = NULL_TREE; |
| struct imp_entry *impent; |
| |
| if (imp_count) |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| |
| if (cat_count) |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| |
| if (!flag_next_runtime) |
| { |
| /* statics = { ..., _OBJC_STATIC_INSTANCES, ... } */ |
| tree expr; |
| |
| if (static_instances_decl) |
| expr = build_unary_op (ADDR_EXPR, static_instances_decl, 0); |
| else |
| expr = build_int_cst (NULL_TREE, 0); |
| |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* Construct the initial value for all of _objc_symtab. */ |
| |
| static tree |
| init_objc_symtab (tree type) |
| { |
| tree initlist; |
| |
| /* sel_ref_cnt = { ..., 5, ... } */ |
| |
| initlist = build_tree_list (NULL_TREE, |
| build_int_cst (long_integer_type_node, 0)); |
| |
| /* refs = { ..., _OBJC_SELECTOR_TABLE, ... } */ |
| if (flag_next_runtime || ! sel_ref_chain) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (build_pointer_type (objc_selector_type), |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| initlist |
| = tree_cons (NULL_TREE, |
| convert (build_pointer_type (objc_selector_type), |
| build_unary_op (ADDR_EXPR, |
| UOBJC_SELECTOR_TABLE_decl, 1)), |
| initlist); |
| |
| /* cls_def_cnt = { ..., 5, ... } */ |
| |
| /* APPLE LOCAL begin radar 4349670 */ |
| /* NULL_TREE for the type means to use integer_type_node. However, this should |
| be a short. */ |
| initlist = tree_cons (NULL_TREE, build_int_cst (short_integer_type_node, |
| imp_count), initlist); |
| |
| /* cat_def_cnt = { ..., 5, ... } */ |
| |
| initlist = tree_cons (NULL_TREE, build_int_cst (short_integer_type_node, |
| cat_count), initlist); |
| /* APPLE LOCAL end radar 4349670 */ |
| |
| /* cls_def = { ..., { &Foo, &Bar, ...}, ... } */ |
| |
| if (imp_count || cat_count || !flag_next_runtime) |
| { |
| |
| tree field = TYPE_FIELDS (type); |
| field = TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (field)))); |
| |
| initlist = tree_cons (NULL_TREE, init_def_list (TREE_TYPE (field)), |
| initlist); |
| } |
| |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* Generate forward declarations for metadata such as |
| 'OBJC_CLASS_...'. */ |
| |
| static tree |
| build_metadata_decl (const char *name, tree type) |
| { |
| tree decl; |
| |
| /* struct TYPE NAME_<name>; */ |
| decl = start_var_decl (type, synth_id_with_class_suffix |
| (name, |
| objc_implementation_context)); |
| |
| return decl; |
| } |
| |
| /* Push forward-declarations of all the categories so that |
| init_def_list can use them in a CONSTRUCTOR. */ |
| |
| static void |
| forward_declare_categories (void) |
| { |
| struct imp_entry *impent; |
| tree sav = objc_implementation_context; |
| |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| /* Set an invisible arg to synth_id_with_class_suffix. */ |
| objc_implementation_context = impent->imp_context; |
| /* APPLE LOCAL begin new ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| /* extern struct category_t _OBJC_$_CATEGORY_<name>; */ |
| impent->class_v2_decl = build_metadata_decl ("_OBJC_$_CATEGORY", |
| objc_v2_category_template); |
| } |
| else |
| { |
| /* extern struct objc_category _OBJC_CATEGORY_<name>; */ |
| impent->class_decl = build_metadata_decl ("_OBJC_CATEGORY", |
| objc_category_template); |
| } |
| /* APPLE LOCAL end new ObjC abi v2 */ |
| } |
| } |
| objc_implementation_context = sav; |
| } |
| |
| /* Create the declaration of _OBJC_SYMBOLS, with type `struct _objc_symtab' |
| and initialized appropriately. */ |
| |
| static void |
| generate_objc_symtab_decl (void) |
| { |
| /* forward declare categories */ |
| if (cat_count) |
| forward_declare_categories (); |
| |
| /* APPLE LOCAL begin new ObjC abi v2 */ |
| /* APPLE LOCAL radar 4531482 */ |
| if (flag_objc_abi != 2) |
| { |
| build_objc_symtab_template (); |
| UOBJC_SYMBOLS_decl = start_var_decl (objc_symtab_template, "_OBJC_SYMBOLS"); |
| finish_var_decl (UOBJC_SYMBOLS_decl, |
| init_objc_symtab (TREE_TYPE (UOBJC_SYMBOLS_decl))); |
| } |
| /* APPLE LOCAL end new ObjC abi v2 */ |
| } |
| |
| static tree |
| init_module_descriptor (tree type) |
| { |
| tree initlist, expr; |
| |
| /* version = { 1, ... } */ |
| |
| expr = build_int_cst (long_integer_type_node, OBJC_VERSION); |
| initlist = build_tree_list (NULL_TREE, expr); |
| |
| /* size = { ..., sizeof (struct _objc_module), ... } */ |
| |
| expr = convert (long_integer_type_node, |
| size_in_bytes (objc_module_template)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| |
| /* APPLE LOCAL begin radar 4327263 */ |
| /* name = { ..., "", ... } */ |
| |
| expr = add_objc_string (get_identifier (""), class_names); |
| /* APPLE LOCAL end radar 4327263 */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| |
| /* symtab = { ..., _OBJC_SYMBOLS, ... } */ |
| |
| if (UOBJC_SYMBOLS_decl) |
| expr = build_unary_op (ADDR_EXPR, UOBJC_SYMBOLS_decl, 0); |
| else |
| expr = build_int_cst (NULL_TREE, 0); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* Write out the data structures to describe Objective C classes defined. |
| |
| struct _objc_module { ... } _OBJC_MODULE = { ... }; */ |
| |
| static void |
| build_module_descriptor (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); /* extern "C" */ |
| #endif |
| |
| objc_module_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_MODULE)); |
| |
| /* long version; */ |
| field_decl = create_field_decl (long_integer_type_node, "version"); |
| field_decl_chain = field_decl; |
| |
| /* long size; */ |
| field_decl = create_field_decl (long_integer_type_node, "size"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* char *name; */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_symtab *symtab; */ |
| field_decl |
| = create_field_decl (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_SYMTAB))), |
| "symtab"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_module_template, field_decl_chain, NULL_TREE); |
| |
| /* Create an instance of "_objc_module". */ |
| UOBJC_MODULES_decl = start_var_decl (objc_module_template, "_OBJC_MODULES"); |
| finish_var_decl (UOBJC_MODULES_decl, |
| init_module_descriptor (TREE_TYPE (UOBJC_MODULES_decl))); |
| |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif |
| } |
| |
| /* The GNU runtime requires us to provide a static initializer function |
| for each module: |
| |
| static void __objc_gnu_init (void) { |
| __objc_exec_class (&L_OBJC_MODULES); |
| } */ |
| |
| static void |
| build_module_initializer_routine (void) |
| { |
| tree body; |
| |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); /* extern "C" */ |
| #endif |
| |
| objc_push_parm (build_decl (PARM_DECL, NULL_TREE, void_type_node)); |
| objc_start_function (get_identifier (TAG_GNUINIT), |
| build_function_type (void_type_node, |
| OBJC_VOID_AT_END), |
| NULL_TREE, objc_get_parm_info (0)); |
| |
| body = c_begin_compound_stmt (true); |
| add_stmt (build_function_call |
| (execclass_decl, |
| build_tree_list |
| (NULL_TREE, |
| build_unary_op (ADDR_EXPR, |
| UOBJC_MODULES_decl, 0)))); |
| add_stmt (c_end_compound_stmt (body, true)); |
| |
| TREE_PUBLIC (current_function_decl) = 0; |
| |
| #ifndef OBJCPLUS |
| /* For Objective-C++, we will need to call __objc_gnu_init |
| from objc_generate_static_init_call() below. */ |
| DECL_STATIC_CONSTRUCTOR (current_function_decl) = 1; |
| #endif |
| |
| GNU_INIT_decl = current_function_decl; |
| finish_function (); |
| |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif |
| } |
| |
| #ifdef OBJCPLUS |
| /* Return 1 if the __objc_gnu_init function has been synthesized and needs |
| to be called by the module initializer routine. */ |
| |
| int |
| objc_static_init_needed_p (void) |
| { |
| return (GNU_INIT_decl != NULL_TREE); |
| } |
| |
| /* Generate a call to the __objc_gnu_init initializer function. */ |
| |
| tree |
| objc_generate_static_init_call (tree ctors ATTRIBUTE_UNUSED) |
| { |
| add_stmt (build_stmt (EXPR_STMT, |
| build_function_call (GNU_INIT_decl, NULL_TREE))); |
| |
| return ctors; |
| } |
| #endif /* OBJCPLUS */ |
| |
| /* Return the DECL of the string IDENT in the SECTION. */ |
| /* APPLE LOCAL begin radar 4359757 */ |
| /* This routine has been rewritten for compile-time performance improvement. */ |
| |
| static tree |
| get_objc_string_decl (tree ident, enum string_section section) |
| { |
| hash *hash_table; |
| hash hsh; |
| |
| if (section == class_names) |
| hash_table = class_names_hash_list; |
| else if (section == meth_var_names) |
| hash_table = meth_var_names_hash_list; |
| else if (section == meth_var_types) |
| hash_table = meth_var_types_hash_list; |
| else if (section == prop_names_attr) |
| hash_table = prop_names_attr_hash_list; |
| else |
| abort (); |
| |
| hsh = hash_ident_lookup (hash_table, ident); |
| if (hsh) |
| return hsh->list->value; |
| |
| abort (); |
| return NULL_TREE; |
| } |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* Output references to all statically allocated objects. Return the DECL |
| for the array built. */ |
| |
| static void |
| generate_static_references (void) |
| { |
| tree decls = NULL_TREE, expr = NULL_TREE; |
| tree class_name, class, decl, initlist; |
| tree cl_chain, in_chain, type |
| = build_array_type (build_pointer_type (void_type_node), NULL_TREE); |
| int num_inst, num_class; |
| char buf[256]; |
| |
| if (flag_next_runtime) |
| abort (); |
| |
| for (cl_chain = objc_static_instances, num_class = 0; |
| cl_chain; cl_chain = TREE_CHAIN (cl_chain), num_class++) |
| { |
| for (num_inst = 0, in_chain = TREE_PURPOSE (cl_chain); |
| in_chain; num_inst++, in_chain = TREE_CHAIN (in_chain)); |
| |
| sprintf (buf, "_OBJC_STATIC_INSTANCES_%d", num_class); |
| decl = start_var_decl (type, buf); |
| |
| /* Output {class_name, ...}. */ |
| class = TREE_VALUE (cl_chain); |
| class_name = get_objc_string_decl (OBJC_TYPE_NAME (class), class_names); |
| initlist = build_tree_list (NULL_TREE, |
| build_unary_op (ADDR_EXPR, class_name, 1)); |
| |
| /* Output {..., instance, ...}. */ |
| for (in_chain = TREE_PURPOSE (cl_chain); |
| in_chain; in_chain = TREE_CHAIN (in_chain)) |
| { |
| expr = build_unary_op (ADDR_EXPR, TREE_VALUE (in_chain), 1); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* Output {..., NULL}. */ |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist); |
| |
| expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); |
| finish_var_decl (decl, expr); |
| decls |
| = tree_cons (NULL_TREE, build_unary_op (ADDR_EXPR, decl, 1), decls); |
| } |
| |
| decls = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), decls); |
| expr = objc_build_constructor (type, nreverse (decls)); |
| static_instances_decl = start_var_decl (type, "_OBJC_STATIC_INSTANCES"); |
| finish_var_decl (static_instances_decl, expr); |
| } |
| |
| /* APPLE LOCAL begin radar 4349690 */ |
| /* This routine is used to get finish_decl to install an initializer for this |
| forward definition and get the declaration resent to the backend. After |
| this is called, finish_decl or finish_var_decl must be used. */ |
| |
| static tree |
| update_var_decl (tree decl) |
| { |
| DECL_INITIAL (decl) = error_mark_node; |
| DECL_EXTERNAL (decl) = 0; |
| TREE_STATIC (decl) = 1; |
| TREE_ASM_WRITTEN (decl) = 0; |
| return decl; |
| } |
| /* APPLE LOCAL end radar 4349690 */ |
| /* Output all strings. */ |
| |
| static void |
| generate_strings (void) |
| { |
| tree chain, string_expr; |
| tree string, decl, type; |
| |
| for (chain = class_names_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| string = TREE_VALUE (chain); |
| decl = TREE_PURPOSE (chain); |
| type = build_array_type |
| (char_type_node, |
| build_index_type |
| (build_int_cst (NULL_TREE, |
| IDENTIFIER_LENGTH (string)))); |
| /* APPLE LOCAL radar 4349690 */ |
| decl = update_var_decl (decl); |
| string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1, |
| IDENTIFIER_POINTER (string)); |
| finish_var_decl (decl, string_expr); |
| } |
| |
| for (chain = meth_var_names_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| string = TREE_VALUE (chain); |
| decl = TREE_PURPOSE (chain); |
| type = build_array_type |
| (char_type_node, |
| build_index_type |
| (build_int_cst (NULL_TREE, |
| IDENTIFIER_LENGTH (string)))); |
| /* APPLE LOCAL radar 4349690 */ |
| decl = update_var_decl (decl); |
| string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1, |
| IDENTIFIER_POINTER (string)); |
| finish_var_decl (decl, string_expr); |
| } |
| |
| for (chain = meth_var_types_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| string = TREE_VALUE (chain); |
| decl = TREE_PURPOSE (chain); |
| type = build_array_type |
| (char_type_node, |
| build_index_type |
| (build_int_cst (NULL_TREE, |
| IDENTIFIER_LENGTH (string)))); |
| /* APPLE LOCAL radar 4349690 */ |
| decl = update_var_decl (decl); |
| /* APPLE LOCAL begin fix whitespace. */ |
| string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1, |
| IDENTIFIER_POINTER (string)); |
| finish_var_decl (decl, string_expr); |
| } |
| /* APPLE LOCAL end fix whitespace. */ |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| for (chain = prop_names_attr_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| string = TREE_VALUE (chain); |
| decl = TREE_PURPOSE (chain); |
| type = build_array_type |
| (char_type_node, |
| build_index_type |
| (build_int_cst (NULL_TREE, |
| IDENTIFIER_LENGTH (string)))); |
| decl = update_var_decl (decl); |
| string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1, |
| IDENTIFIER_POINTER (string)); |
| finish_var_decl (decl, string_expr); |
| } |
| } |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| /* APPLE LOCAL begin ObjC new abi */ |
| static GTY(()) int classlist_reference_idx; |
| |
| /* This routine creates a global variable of type 'Class' to hold address of a |
| class. */ |
| |
| static tree |
| build_classlist_reference_decl (void) |
| { |
| tree decl; |
| char buf[256]; |
| |
| sprintf (buf, "_OBJC_CLASSLIST_REFERENCES_$_%d", classlist_reference_idx++); |
| decl = start_var_decl (objc_class_type, buf); |
| |
| return decl; |
| } |
| |
| /* Routine builds name of Interface's main meta-data of type class_t. */ |
| |
| static char* |
| objc_build_internal_classname (tree ident, bool metaclass) |
| { |
| static char string[BUFSIZE]; |
| sprintf (string, "%s_%s", !metaclass ? "OBJC_CLASS_$" |
| : "OBJC_METACLASS_$", |
| IDENTIFIER_POINTER (ident)); |
| return string; |
| } |
| |
| /* Build decl = initializer; for each externally visible class reference. */ |
| |
| static void |
| build_classlist_translation_table (bool metaclass_chain) |
| { |
| tree chain; |
| |
| for (chain = !metaclass_chain ? classlist_ref_chain |
| : metaclasslist_ref_chain; |
| chain; chain = TREE_CHAIN (chain)) |
| { |
| tree expr = TREE_VALUE (chain); |
| tree decl = TREE_PURPOSE (chain); |
| /* Interface with no implementation and yet one of its messages has been |
| used. Need to generate a full address-of tree for it here. */ |
| if (TREE_CODE (expr) == IDENTIFIER_NODE) |
| { |
| expr = create_extern_decl (objc_v2_class_template, |
| objc_build_internal_classname (expr, metaclass_chain)); |
| expr = convert (objc_class_type, build_fold_addr_expr (expr)); |
| } |
| finish_var_decl (decl, expr); |
| } |
| } |
| |
| /* APPLE LOCAL begin radar 4561192 */ |
| /* Set the alignment to __attribute__ ((size_of_el_type)) */ |
| |
| static void |
| objc_set_alignment_attribute (tree decl, tree el_type) |
| { |
| int int_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (el_type)); |
| tree size = build_int_cst (NULL_TREE, int_size); |
| tree attribute = build_tree_list (get_identifier ("aligned"), |
| build_tree_list (NULL_TREE, size)); |
| decl_attributes (&decl, attribute, 0); |
| return; |
| } |
| /* APPLE LOCAL end radar 4561192 */ |
| |
| /* Build the __class_list section table containing address of all @implemented class |
| meta-data. */ |
| |
| static void |
| build_class_list_address_table (bool nonlazy) |
| { |
| tree chain; |
| int count=0; |
| tree type; |
| tree initlist = NULL_TREE; |
| tree decl; |
| tree expr; |
| tree list_chain = nonlazy ? nonlazy_class_list_chain : class_list_chain; |
| const char *label_name = nonlazy ? "_OBJC_LABEL_NONLAZY_CLASS_$" |
| : "_OBJC_LABEL_CLASS_$"; |
| |
| for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree purpose = NULL_TREE; |
| expr = TREE_VALUE (chain); |
| expr = convert (objc_class_type, build_fold_addr_expr (expr)); |
| #ifndef OBJCPLUS |
| purpose = build_int_cst (NULL_TREE, count); |
| #endif |
| ++count; |
| initlist = tree_cons (purpose, expr, initlist); |
| } |
| gcc_assert (count > 0); |
| type = build_array_type (objc_class_type, |
| build_index_type (build_int_cst (NULL_TREE, count - 1))); |
| decl = start_var_decl (type, label_name); |
| expr = objc_build_constructor (type, nreverse (initlist)); |
| /* APPLE LOCAL radar 4561192 */ |
| objc_set_alignment_attribute (decl, objc_class_type); |
| finish_var_decl (decl, expr); |
| } |
| |
| /* Build the __category_list (NONLAZY is false) or __nonlazy_category (NONLAZY is true) |
| section table containing address of all @implemented category meta-data. */ |
| |
| static void |
| build_category_list_address_table (bool nonlazy) |
| { |
| tree chain; |
| int count=0; |
| tree type; |
| tree initlist = NULL_TREE; |
| tree decl; |
| tree expr; |
| tree list_chain = nonlazy ? nonlazy_category_list_chain : category_list_chain; |
| const char * label_name = nonlazy ? "_OBJC_LABEL_NONLAZY_CATEGORY_$" |
| : "_OBJC_LABEL_CATEGORY_$"; |
| |
| for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree purpose = NULL_TREE; |
| expr = TREE_VALUE (chain); |
| expr = convert (objc_class_type, build_fold_addr_expr (expr)); |
| #ifndef OBJCPLUS |
| purpose = build_int_cst (NULL_TREE, count); |
| #endif |
| ++count; |
| initlist = tree_cons (purpose, expr, initlist); |
| } |
| gcc_assert (count > 0); |
| type = build_array_type (objc_class_type, |
| build_index_type (build_int_cst (NULL_TREE, count - 1))); |
| decl = start_var_decl (type, label_name); |
| expr = objc_build_constructor (type, nreverse (initlist)); |
| /* APPLE LOCAL radar 4561192 */ |
| objc_set_alignment_attribute (decl, objc_class_type); |
| finish_var_decl (decl, expr); |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| static GTY(()) int selector_reference_idx; |
| |
| static tree |
| build_selector_reference_decl (void) |
| { |
| tree decl; |
| char buf[256]; |
| |
| sprintf (buf, "_OBJC_SELECTOR_REFERENCES_%d", selector_reference_idx++); |
| decl = start_var_decl (objc_selector_type, buf); |
| |
| return decl; |
| } |
| |
| static void |
| build_selector_table_decl (void) |
| { |
| tree temp; |
| |
| if (flag_typed_selectors) |
| { |
| build_selector_template (); |
| temp = build_array_type (objc_selector_template, NULL_TREE); |
| } |
| else |
| temp = build_array_type (objc_selector_type, NULL_TREE); |
| |
| UOBJC_SELECTOR_TABLE_decl = start_var_decl (temp, "_OBJC_SELECTOR_TABLE"); |
| } |
| |
| /* Just a handy wrapper for add_objc_string. */ |
| |
| static tree |
| build_selector (tree ident) |
| { |
| return convert (objc_selector_type, |
| add_objc_string (ident, meth_var_names)); |
| } |
| |
| static void |
| build_selector_translation_table (void) |
| { |
| tree chain, initlist = NULL_TREE; |
| int offset = 0; |
| tree decl = NULL_TREE; |
| |
| for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree expr; |
| |
| if (warn_selector && objc_implementation_context) |
| { |
| tree method_chain; |
| bool found = false; |
| for (method_chain = meth_var_names_chain; |
| method_chain; |
| method_chain = TREE_CHAIN (method_chain)) |
| { |
| if (TREE_VALUE (method_chain) == TREE_VALUE (chain)) |
| { |
| found = true; |
| break; |
| } |
| } |
| if (!found) |
| { |
| location_t *loc; |
| if (flag_next_runtime && TREE_PURPOSE (chain)) |
| loc = &DECL_SOURCE_LOCATION (TREE_PURPOSE (chain)); |
| else |
| loc = &input_location; |
| warning ("%Hcreating selector for nonexistent method %qE", |
| loc, TREE_VALUE (chain)); |
| } |
| } |
| |
| expr = build_selector (TREE_VALUE (chain)); |
| /* add one for the '\0' character */ |
| offset += IDENTIFIER_LENGTH (TREE_VALUE (chain)) + 1; |
| |
| if (flag_next_runtime) |
| { |
| decl = TREE_PURPOSE (chain); |
| finish_var_decl (decl, expr); |
| } |
| else |
| { |
| if (flag_typed_selectors) |
| { |
| tree eltlist = NULL_TREE; |
| tree encoding = get_proto_encoding (TREE_PURPOSE (chain)); |
| eltlist = tree_cons (NULL_TREE, expr, NULL_TREE); |
| eltlist = tree_cons (NULL_TREE, encoding, eltlist); |
| expr = objc_build_constructor (objc_selector_template, |
| nreverse (eltlist)); |
| } |
| |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| |
| if (! flag_next_runtime) |
| { |
| /* Cause the selector table (previously forward-declared) |
| to be actually output. */ |
| initlist = tree_cons (NULL_TREE, |
| flag_typed_selectors |
| ? objc_build_constructor |
| (objc_selector_template, |
| tree_cons (NULL_TREE, |
| build_int_cst (NULL_TREE, 0), |
| tree_cons (NULL_TREE, |
| build_int_cst (NULL_TREE, 0), |
| NULL_TREE))) |
| : build_int_cst (NULL_TREE, 0), initlist); |
| initlist = objc_build_constructor (TREE_TYPE (UOBJC_SELECTOR_TABLE_decl), |
| nreverse (initlist)); |
| finish_var_decl (UOBJC_SELECTOR_TABLE_decl, initlist); |
| } |
| } |
| |
| static tree |
| get_proto_encoding (tree proto) |
| { |
| tree encoding; |
| if (proto) |
| { |
| if (! METHOD_ENCODING (proto)) |
| { |
| encoding = encode_method_prototype (proto); |
| METHOD_ENCODING (proto) = encoding; |
| } |
| else |
| encoding = METHOD_ENCODING (proto); |
| |
| return add_objc_string (encoding, meth_var_types); |
| } |
| else |
| return build_int_cst (NULL_TREE, 0); |
| } |
| |
| /* sel_ref_chain is a list whose "value" fields will be instances of |
| identifier_node that represent the selector. */ |
| |
| static tree |
| build_typed_selector_reference (tree ident, tree prototype) |
| { |
| tree *chain = &sel_ref_chain; |
| tree expr; |
| int index = 0; |
| |
| while (*chain) |
| { |
| if (TREE_PURPOSE (*chain) == prototype && TREE_VALUE (*chain) == ident) |
| goto return_at_index; |
| |
| index++; |
| chain = &TREE_CHAIN (*chain); |
| } |
| |
| *chain = tree_cons (prototype, ident, NULL_TREE); |
| |
| return_at_index: |
| expr = build_unary_op (ADDR_EXPR, |
| build_array_ref (UOBJC_SELECTOR_TABLE_decl, |
| build_int_cst (NULL_TREE, index)), |
| 1); |
| return convert (objc_selector_type, expr); |
| } |
| |
| /* APPLE LOCAL begin radar 4359757 */ |
| /* New routine replacing old build_selector_reference to improve |
| compile-time performance. */ |
| static tree |
| build_next_runtime_selector_reference (tree ident) |
| { |
| hash hsh; |
| tree *chain = &sel_ref_chain; |
| tree expr; |
| |
| hsh = hash_ident_lookup (sel_ref_hash_list, ident); |
| if (hsh) |
| return hsh->list->value; |
| |
| expr = build_selector_reference_decl (); |
| hsh = hash_ident_enter (sel_ref_hash_list, ident); |
| hash_add_attr (hsh, expr); |
| |
| *chain = tree_cons (expr, ident, *chain); |
| |
| return expr; |
| } |
| |
| static tree |
| build_selector_reference (tree ident) |
| { |
| tree *chain = &sel_ref_chain; |
| tree expr; |
| int index = 0; |
| |
| while (*chain) |
| { |
| if (TREE_VALUE (*chain) == ident) |
| return build_array_ref (UOBJC_SELECTOR_TABLE_decl, |
| build_int_cst (NULL_TREE, index)); |
| |
| index++; |
| chain = &TREE_CHAIN (*chain); |
| } |
| |
| expr = NULL_TREE; |
| *chain = tree_cons (expr, ident, NULL_TREE); |
| |
| return build_array_ref (UOBJC_SELECTOR_TABLE_decl, |
| build_int_cst (NULL_TREE, index)); |
| } |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* Declare a variable of type 'struct message_ref_t'. */ |
| |
| static GTY(()) int message_reference_idx; |
| |
| static tree |
| build_message_reference_decl (void) |
| { |
| tree decl; |
| char buf[256]; |
| |
| sprintf (buf, "_OBJC_MESSAGE_REF_%d", message_reference_idx++); |
| decl = start_var_decl (objc_v2_message_ref_template, buf); |
| |
| return decl; |
| } |
| |
| /* Build the list of (objc_msgSend_fixup_xxx, selector name) Used later on to |
| initialize the table of 'struct message_ref_t' elements. */ |
| |
| static tree |
| build_selector_messenger_reference (tree sel_name, tree message_func_decl) |
| { |
| tree *chain = &message_ref_chain; |
| tree mess_expr; |
| |
| while (*chain) |
| { |
| if (TREE_VALUE (*chain) == message_func_decl) |
| { |
| if (TREE_CHAIN (*chain) && TREE_VALUE (TREE_CHAIN (*chain)) == sel_name) |
| return TREE_PURPOSE (*chain); |
| } |
| chain = &TREE_CHAIN (*chain); |
| } |
| |
| mess_expr = build_message_reference_decl (); |
| *chain = tree_cons (mess_expr, message_func_decl, NULL_TREE); |
| |
| chain = &TREE_CHAIN (*chain); |
| |
| *chain = tree_cons (NULL_TREE, sel_name, NULL_TREE); |
| |
| return mess_expr; |
| } |
| |
| /* Build the struct message_ref_t msg = |
| {objc_msgSend_fixup_xxx, @selector(func)} |
| table. */ |
| |
| static void |
| build_message_ref_translation_table (void) |
| { |
| tree chain; |
| tree decl = NULL_TREE; |
| for (chain = message_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree expr; |
| tree fields; |
| tree initializer = NULL_TREE; |
| tree constructor; |
| tree struct_type; |
| |
| decl = TREE_PURPOSE (chain); |
| struct_type = TREE_TYPE (decl); |
| fields = TYPE_FIELDS (struct_type); |
| |
| /* First 'IMP messenger' field */ |
| expr = build_unary_op (ADDR_EXPR, TREE_VALUE (chain), 0); |
| /* APPLE LOCAL begin radar 4582204 */ |
| expr = convert (objc_v2_imp_type, expr); |
| initializer = build_tree_list (NULL_TREE, expr); |
| /* APPLE LOCAL end radar 4582204 */ |
| |
| /* Next the 'SEL name' field */ |
| fields = TREE_CHAIN (fields); |
| gcc_assert (TREE_CHAIN (chain)); |
| chain = TREE_CHAIN (chain); |
| expr = build_selector (TREE_VALUE (chain)); |
| /* APPLE LOCAL radar 4582204 */ |
| initializer = tree_cons (NULL_TREE, expr, initializer); |
| constructor = objc_build_constructor (struct_type, nreverse (initializer)); |
| TREE_INVARIANT (constructor) = true; |
| finish_var_decl (decl, constructor); |
| } |
| } |
| |
| /* Assign all arguments in VALUES which have side-effect to a temporary and |
| replaced that argument in VALUES list with the temporary. TYPELIST is the |
| list of argument types. */ |
| |
| static tree |
| objc_copy_to_temp_side_effect_params (tree typelist, tree values) |
| { |
| tree valtail, typetail; |
| /* skip over receiver and the &_msf_ref types */ |
| gcc_assert (TREE_CHAIN (typelist)); |
| typetail = TREE_CHAIN (TREE_CHAIN (typelist)); |
| |
| for (valtail = values; |
| valtail; |
| valtail = TREE_CHAIN (valtail), typetail = TREE_CHAIN (typetail)) |
| { |
| tree value = TREE_VALUE (valtail); |
| tree type = typetail ? TREE_VALUE (typetail) : NULL_TREE; |
| if (type == NULL_TREE) |
| break; |
| if (!TREE_SIDE_EFFECTS (value)) |
| continue; |
| /* To prevent reevaluation */ |
| value = save_expr (value); |
| add_stmt (value); |
| TREE_VALUE (valtail) = value; |
| } |
| return values; |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| static GTY(()) int class_reference_idx; |
| |
| static tree |
| build_class_reference_decl (void) |
| { |
| tree decl; |
| char buf[256]; |
| |
| sprintf (buf, "_OBJC_CLASS_REFERENCES_%d", class_reference_idx++); |
| decl = start_var_decl (objc_class_type, buf); |
| return decl; |
| } |
| |
| /* Create a class reference, but don't create a variable to reference |
| it. */ |
| |
| static void |
| add_class_reference (tree ident) |
| { |
| tree chain; |
| |
| if ((chain = cls_ref_chain)) |
| { |
| tree tail; |
| do |
| { |
| if (ident == TREE_VALUE (chain)) |
| return; |
| |
| tail = chain; |
| chain = TREE_CHAIN (chain); |
| } |
| while (chain); |
| |
| /* Append to the end of the list */ |
| TREE_CHAIN (tail) = tree_cons (NULL_TREE, ident, NULL_TREE); |
| } |
| else |
| cls_ref_chain = tree_cons (NULL_TREE, ident, NULL_TREE); |
| } |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| /* This routine builds the class_reference_chain for each class name used |
| in a [super class_name] message. IDENT is current a class's name. Initially, |
| a (global_name, IDENT) tuple is added to the list. But in call to |
| build_classlist_translation_table (), each IDENT is replaced with address of |
| the class metadata (of type 'Class'). */ |
| |
| static tree |
| objc_v2_get_class_reference (tree ident) |
| { |
| tree *chain; |
| tree decl; |
| |
| for (chain = &classlist_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| if (TREE_VALUE (*chain) == ident) |
| { |
| if (! TREE_PURPOSE (*chain)) |
| TREE_PURPOSE (*chain) = build_classlist_reference_decl (); |
| |
| return TREE_PURPOSE (*chain); |
| } |
| |
| decl = build_classlist_reference_decl (); |
| *chain = tree_cons (decl, ident, NULL_TREE); |
| return decl; |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| |
| /* APPLE LOCAL begin radar 4535676 */ |
| |
| /* This routine creates a global variable of type 'Class' to hold address of a |
| class. */ |
| |
| static tree |
| build_classlist_super_reference_decl (void) |
| { |
| tree decl; |
| char buf[256]; |
| |
| sprintf (buf, "_OBJC_CLASSLIST_SUP_REFS_$_%d", classlist_reference_idx++); |
| decl = start_var_decl (objc_class_type, buf); |
| |
| return decl; |
| } |
| /* This routine builds the class_super_ref_chain/metaclass_super_ref_chain |
| for each class name used in a [super class_name] message. IDENT is |
| current a class's name. Initially, |
| a (global_name, IDENT) tuple is added to the list. But in call to |
| build_classlist_translation_table (), each IDENT is replaced with address of |
| the class metadata (of type 'Class'). */ |
| |
| static tree |
| objc_v2_get_class_super_reference (tree ident, bool inst) |
| { |
| tree *chain; |
| tree decl; |
| |
| for (chain = inst ? &classlist_super_ref_chain : &metaclasslist_super_ref_chain; |
| *chain; chain = &TREE_CHAIN (*chain)) |
| if (TREE_VALUE (*chain) == ident) |
| { |
| if (! TREE_PURPOSE (*chain)) |
| TREE_PURPOSE (*chain) = build_classlist_super_reference_decl (); |
| |
| return TREE_PURPOSE (*chain); |
| } |
| |
| decl = build_classlist_super_reference_decl (); |
| *chain = tree_cons (decl, ident, NULL_TREE); |
| return decl; |
| } |
| |
| /* Build decl = initializer; for each externally visible class reference. */ |
| |
| static void |
| build_classlist_super_translation_table (bool metaclass_chain) |
| { |
| tree chain; |
| |
| for (chain = !metaclass_chain ? classlist_super_ref_chain |
| : metaclasslist_super_ref_chain; |
| chain; chain = TREE_CHAIN (chain)) |
| { |
| tree expr = TREE_VALUE (chain); |
| tree decl = TREE_PURPOSE (chain); |
| /* Interface with no implementation and yet one of its messages has been |
| used. Need to generate a full address-of tree for it here. */ |
| if (TREE_CODE (expr) == IDENTIFIER_NODE) |
| { |
| expr = create_extern_decl (objc_v2_class_template, |
| objc_build_internal_classname (expr, metaclass_chain)); |
| expr = convert (objc_class_type, build_fold_addr_expr (expr)); |
| } |
| finish_var_decl (decl, expr); |
| } |
| } |
| /* APPLE LOCAL end radar 4535676 */ |
| |
| /* Get a class reference, creating it if necessary. Also create the |
| reference variable. */ |
| |
| tree |
| objc_get_class_reference (tree ident) |
| { |
| /* APPLE LOCAL begin mainline */ |
| tree orig_ident = (DECL_P (ident) |
| ? DECL_NAME (ident) |
| : TYPE_P (ident) |
| ? OBJC_TYPE_NAME (ident) |
| : ident); |
| bool local_scope = false; |
| |
| /* APPLE LOCAL begin prevent extra error diagnostics. */ |
| if (orig_ident == error_mark_node) |
| return orig_ident; |
| /* APPLE LOCAL end prevent extra error diagnostics. */ |
| |
| #ifdef OBJCPLUS |
| if (processing_template_decl) |
| /* Must wait until template instantiation time. */ |
| return build_min_nt (CLASS_REFERENCE_EXPR, ident); |
| #endif |
| |
| if (TREE_CODE (ident) == TYPE_DECL) |
| ident = (DECL_ORIGINAL_TYPE (ident) |
| ? DECL_ORIGINAL_TYPE (ident) |
| : TREE_TYPE (ident)); |
| |
| #ifdef OBJCPLUS |
| if (TYPE_P (ident) && TYPE_CONTEXT (ident) |
| && TYPE_CONTEXT (ident) != global_namespace) |
| local_scope = true; |
| #endif |
| /* APPLE LOCAL mainline */ |
| /* 'orig_ident = ident' assignment removed. */ |
| |
| if (local_scope || !(ident = objc_is_class_name (ident))) |
| { |
| error ("%qs is not an Objective-C class name or alias", |
| IDENTIFIER_POINTER (orig_ident)); |
| return error_mark_node; |
| } |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2 && !flag_zero_link) |
| return objc_v2_get_class_reference (ident); |
| /* APPLE LOCAL end ObjC abi v2 */ |
| if (flag_next_runtime && !flag_zero_link) |
| { |
| tree *chain; |
| tree decl; |
| |
| for (chain = &cls_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| if (TREE_VALUE (*chain) == ident) |
| { |
| if (! TREE_PURPOSE (*chain)) |
| TREE_PURPOSE (*chain) = build_class_reference_decl (); |
| |
| return TREE_PURPOSE (*chain); |
| } |
| |
| decl = build_class_reference_decl (); |
| *chain = tree_cons (decl, ident, NULL_TREE); |
| return decl; |
| } |
| else |
| { |
| tree params; |
| |
| add_class_reference (ident); |
| |
| params = build_tree_list (NULL_TREE, |
| my_build_string (IDENTIFIER_LENGTH (ident) + 1, |
| IDENTIFIER_POINTER (ident))); |
| |
| assemble_external (objc_get_class_decl); |
| return build_function_call (objc_get_class_decl, params); |
| } |
| } |
| |
| /* APPLE LOCAL begin radar 4359757 */ |
| /* New routine to do hash lookup keyed on IDENTIFIER node. */ |
| |
| static hash |
| hash_ident_lookup (hash *hashlist, tree sel_name) |
| { |
| hash target; |
| |
| target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; |
| |
| while (target) |
| { |
| if (sel_name == target->key) |
| return target; |
| |
| target = target->next; |
| } |
| return 0; |
| } |
| |
| /* New routine to add IDENTIFIER node to hash table. */ |
| static hash |
| hash_ident_enter (hash *hashlist, tree ident) |
| { |
| hash obj; |
| int slot = hash_func (ident) % SIZEHASHTABLE; |
| |
| obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); |
| obj->list = 0; |
| obj->next = hashlist[slot]; |
| obj->key = ident; |
| |
| hashlist[slot] = obj; /* append to front */ |
| return obj; |
| } |
| |
| /* For each string section we have a chain which maps identifier nodes |
| to decls for the strings. */ |
| |
| static tree |
| add_objc_string (tree ident, enum string_section section) |
| { |
| tree *chain, decl; |
| hash *hash_table; |
| hash hsh; |
| |
| if (section == class_names) |
| { |
| chain = &class_names_chain; |
| hash_table = class_names_hash_list; |
| } |
| else if (section == meth_var_names) |
| { |
| chain = &meth_var_names_chain; |
| hash_table = meth_var_names_hash_list; |
| } |
| else if (section == meth_var_types) |
| { |
| chain = &meth_var_types_chain; |
| hash_table = meth_var_types_hash_list; |
| } |
| else if (section == prop_names_attr) |
| { |
| chain = &prop_names_attr_chain; |
| hash_table = prop_names_attr_hash_list; |
| } |
| else |
| abort (); |
| |
| hsh = hash_ident_lookup (hash_table, ident); |
| if (hsh) |
| return convert (string_type_node, |
| build_unary_op (ADDR_EXPR, hsh->list->value, 1)); |
| |
| decl = build_objc_string_decl (section); |
| |
| hsh = hash_ident_enter (hash_table, ident); |
| hash_add_attr (hsh, decl); |
| *chain = tree_cons (decl, ident, *chain); |
| |
| return convert (string_type_node, build_unary_op (ADDR_EXPR, decl, 1)); |
| } |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| static GTY(()) int class_names_idx; |
| static GTY(()) int meth_var_names_idx; |
| static GTY(()) int meth_var_types_idx; |
| /* APPLE LOCAL C* property metadata (Radar 4498373) */ |
| static GTY(()) int property_name_attr_idx; |
| |
| static tree |
| build_objc_string_decl (enum string_section section) |
| { |
| tree decl, ident; |
| char buf[256]; |
| |
| if (section == class_names) |
| sprintf (buf, "_OBJC_CLASS_NAME_%d", class_names_idx++); |
| else if (section == meth_var_names) |
| sprintf (buf, "_OBJC_METH_VAR_NAME_%d", meth_var_names_idx++); |
| else if (section == meth_var_types) |
| sprintf (buf, "_OBJC_METH_VAR_TYPE_%d", meth_var_types_idx++); |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| else if (section == prop_names_attr) |
| sprintf (buf, "_OBJC_PROP_NAME_ATTR_%d", property_name_attr_idx++); |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| { |
| /* Darwin linker prefers to use 'L' as a prefix. GCC codegen handles this |
| later while emitting symbols, but fix it here for llvm. */ |
| char *tbuf = alloca (strlen (buf) + 2); |
| tbuf[0] = 'L'; |
| strcpy (tbuf + 1, buf); |
| ident = get_identifier (tbuf); |
| } |
| #else |
| ident = get_identifier (buf); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| |
| |
| decl = build_decl (VAR_DECL, ident, build_array_type (char_type_node, 0)); |
| DECL_EXTERNAL (decl) = 1; |
| TREE_PUBLIC (decl) = 0; |
| TREE_USED (decl) = 1; |
| TREE_CONSTANT (decl) = 1; |
| DECL_CONTEXT (decl) = 0; |
| DECL_ARTIFICIAL (decl) = 1; |
| #ifdef OBJCPLUS |
| DECL_THIS_STATIC (decl) = 1; /* squash redeclaration errors */ |
| #endif |
| |
| /* APPLE LOCAL begin LLVM */ |
| #ifndef ENABLE_LLVM |
| make_decl_rtl (decl); |
| #else |
| /* This decl's name is special, it uses 'L' as a prefix. Ask llvm to not |
| add leading underscore by setting it as a user supplied asm name. */ |
| set_user_assembler_name (decl, IDENTIFIER_POINTER (DECL_NAME (decl))); |
| /* Let optimizer know that this decl is not removable. */ |
| DECL_PRESERVE_P (decl) = 1; |
| make_decl_llvm (decl); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| pushdecl_top_level (decl); |
| |
| return decl; |
| } |
| |
| |
| void |
| objc_declare_alias (tree alias_ident, tree class_ident) |
| { |
| tree underlying_class; |
| |
| #ifdef OBJCPLUS |
| if (current_namespace != global_namespace) { |
| error ("Objective-C declarations may only appear in global scope"); |
| } |
| #endif /* OBJCPLUS */ |
| |
| if (!(underlying_class = objc_is_class_name (class_ident))) |
| warning ("cannot find class %qs", IDENTIFIER_POINTER (class_ident)); |
| else if (objc_is_class_name (alias_ident)) |
| warning ("class %qs already exists", IDENTIFIER_POINTER (alias_ident)); |
| else |
| /* APPLE LOCAL begin mainline */ |
| { |
| /* Implement @compatibility_alias as a typedef. */ |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); /* extern "C" */ |
| #endif |
| lang_hooks.decls.pushdecl (build_decl |
| (TYPE_DECL, |
| alias_ident, |
| xref_tag (RECORD_TYPE, underlying_class))); |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif |
| /* APPLE LOCAL begin radar 4345837 */ |
| hash_class_name_enter (als_name_hash_list, alias_ident, |
| underlying_class); |
| /* APPLE LOCAL end radar 4345837 */ |
| } |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| void |
| objc_declare_class (tree ident_list) |
| { |
| tree list; |
| #ifdef OBJCPLUS |
| if (current_namespace != global_namespace) { |
| error ("Objective-C declarations may only appear in global scope"); |
| } |
| #endif /* OBJCPLUS */ |
| |
| for (list = ident_list; list; list = TREE_CHAIN (list)) |
| { |
| tree ident = TREE_VALUE (list); |
| |
| if (! objc_is_class_name (ident)) |
| { |
| tree record = lookup_name (ident), type = record; |
| |
| if (record) |
| { |
| if (TREE_CODE (record) == TYPE_DECL) |
| /* APPLE LOCAL begin radar 4278236 */ |
| type = DECL_ORIGINAL_TYPE (record) ? |
| DECL_ORIGINAL_TYPE (record) : |
| TREE_TYPE (record); |
| /* APPLE LOCAL end radar 4278236 */ |
| /* APPLE LOCAL radar 4829851 */ |
| if (TREE_CODE (type) != RECORD_TYPE || !TYPE_HAS_OBJC_INFO (type) |
| || !TYPE_OBJC_INTERFACE (type)) |
| { |
| error ("%qs redeclared as different kind of symbol", |
| IDENTIFIER_POINTER (ident)); |
| error ("%Jprevious declaration of '%D'", |
| record, record); |
| } |
| } |
| |
| record = xref_tag (RECORD_TYPE, ident); |
| INIT_TYPE_OBJC_INFO (record); |
| TYPE_OBJC_INTERFACE (record) = ident; |
| /* APPLE LOCAL radar 4345837 */ |
| hash_class_name_enter (cls_name_hash_list, ident, NULL_TREE); |
| } |
| } |
| } |
| |
| tree |
| objc_is_class_name (tree ident) |
| { |
| /* APPLE LOCAL radar 4345837 */ |
| hash target; |
| |
| if (ident && TREE_CODE (ident) == IDENTIFIER_NODE |
| && identifier_global_value (ident)) |
| ident = identifier_global_value (ident); |
| while (ident && TREE_CODE (ident) == TYPE_DECL && DECL_ORIGINAL_TYPE (ident)) |
| ident = OBJC_TYPE_NAME (DECL_ORIGINAL_TYPE (ident)); |
| |
| if (ident && TREE_CODE (ident) == RECORD_TYPE) |
| ident = OBJC_TYPE_NAME (ident); |
| #ifdef OBJCPLUS |
| if (ident && TREE_CODE (ident) == TYPE_DECL) |
| /* APPLE LOCAL begin radar 4407151 */ |
| { |
| tree type = TREE_TYPE (ident); |
| if (type && TREE_CODE (type) == TEMPLATE_TYPE_PARM) |
| return NULL_TREE; |
| ident = DECL_NAME (ident); |
| } |
| /* APPLE LOCAL end radar 4407151 */ |
| #endif |
| if (!ident || TREE_CODE (ident) != IDENTIFIER_NODE) |
| return NULL_TREE; |
| |
| if (lookup_interface (ident)) |
| return ident; |
| /* APPLE LOCAL begin radar 4345837 */ |
| target = hash_class_name_lookup (cls_name_hash_list, ident); |
| if (target) |
| return target->key; |
| |
| target = hash_class_name_lookup (als_name_hash_list, ident); |
| if (target) |
| { |
| gcc_assert (target->list && target->list->value); |
| return target->list->value; |
| } |
| /* APPLE LOCAL end radar 4345837 */ |
| |
| return 0; |
| } |
| |
| /* Check whether TYPE is either 'id' or 'Class'. */ |
| |
| tree |
| objc_is_id (tree type) |
| { |
| if (type && TREE_CODE (type) == IDENTIFIER_NODE |
| && identifier_global_value (type)) |
| type = identifier_global_value (type); |
| |
| if (type && TREE_CODE (type) == TYPE_DECL) |
| type = TREE_TYPE (type); |
| |
| /* NB: This function may be called before the ObjC front-end has |
| been initialized, in which case OBJC_OBJECT_TYPE will (still) be NULL. */ |
| return (objc_object_type && type |
| && (IS_ID (type) || IS_CLASS (type) || IS_SUPER (type)) |
| ? type |
| : NULL_TREE); |
| } |
| |
| /* Check whether TYPE is either 'id', 'Class', or a pointer to an ObjC |
| class instance. This is needed by other parts of the compiler to |
| handle ObjC types gracefully. */ |
| |
| tree |
| objc_is_object_ptr (tree type) |
| { |
| tree ret; |
| |
| type = TYPE_MAIN_VARIANT (type); |
| if (!POINTER_TYPE_P (type)) |
| return 0; |
| |
| ret = objc_is_id (type); |
| if (!ret) |
| /* APPLE LOCAL ObjC GC */ |
| ret = objc_is_class_name (TYPE_MAIN_VARIANT (TREE_TYPE (type))); |
| |
| return ret; |
| } |
| |
| /* APPLE LOCAL begin ObjC GC */ |
| /* Return 1 if TYPE should be garbage collected, -1 if has __weak attribut |
| and 0 otherwise. Types marked with the '__strong' attribute are GC-able, |
| whereas those marked with __weak' are not. Types marked with neither |
| attribute are GC-able if (a) they are Objective-C pointer types or (b) |
| they are pointers to types that are themselves GC-able. */ |
| |
| /* APPLE LOCAL end ObjC GC */ |
| /* APPLE LOCAL begin mainline */ |
| static int |
| /* APPLE LOCAL ObjC GC */ |
| objc_is_gcable_type (tree type) |
| { |
| /* APPLE LOCAL ObjC GC */ |
| /* CODE FRAGMENT REMOVED. */ |
| /* APPLE LOCAL begin radar 4829803 */ |
| if (!TYPE_P (type) |
| #ifdef OBJCPLUS |
| || type_unknown_p (type) |
| #endif |
| ) |
| /* APPLE LOCAL end radar 4829803 */ |
| return 0; |
| /* APPLE LOCAL begin ObjC GC */ |
| |
| do |
| { |
| /* The '__strong' and '__weak' keywords trump all. */ |
| int strong = objc_is_strong_p (type); |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| if (strong) |
| return strong; |
| /* APPLE LOCAL end radar 4426814 */ |
| |
| /* Function pointers are not GC-able. */ |
| if (TREE_CODE (type) == FUNCTION_TYPE) |
| return 0; |
| |
| /* Objective-C objects are GC-able, unless they were tagged with |
| '__weak'. */ |
| if (objc_is_object_ptr (type)) |
| /* APPLE LOCAL radar 4426814 */ |
| return (objc_is_strong_p (TREE_TYPE (type)) >= 0 ? 1 : -1); |
| |
| type = TREE_TYPE (type); |
| } |
| while (type); |
| |
| return 0; |
| /* APPLE LOCAL end ObjC GC */ |
| } |
| |
| /* APPLE LOCAL begin radar 4982951 */ |
| /* This routine retrievs the outervar of the objc2 tree EXPR representing address of an ivar. |
| Tree EXPR is in the form of ((*typeof ivar)(OUTERVAR + OBJC2_IVAR_OFFSET_VAR)). |
| It returns OUTERVAR. Note that input EXPR tree is already validate via call to |
| objc_v2_ivar_reference. So no additional checking is done in this routine. */ |
| static |
| tree objc2_outervar (tree expr) |
| { |
| gcc_assert (TREE_CODE (expr) == NOP_EXPR); |
| expr = TREE_OPERAND (expr, 0); |
| gcc_assert (TREE_CODE (expr) == PLUS_EXPR); |
| return TREE_OPERAND (expr, 0); |
| } |
| |
| /* This routine builds * ((typeof (INDIR)*) 0 + OFFSET) |
| This tree corresponds to * (&((typeof(outervar) *) 0)->ivar) in 'fragile' objc1 |
| abi. (see comment in objc_build_ivar_assignment) |
| */ |
| |
| static tree |
| objc2_build_indirect_ref_ivar2 (tree indir, tree offset, tree newoutervar) |
| { |
| tree ftype = TREE_TYPE (indir); |
| tree expr = build_c_cast (string_type_node, newoutervar); |
| /* (char*)newoutervar + offset */ |
| expr = fold (build2 (PLUS_EXPR, string_type_node, expr, offset)); |
| |
| /* (ftype*)((char*)newoutervar + offset) */ |
| expr = build_c_cast (build_pointer_type (ftype), expr); |
| |
| /* Finally: *(ftype*)((char*)newoutervar + offset) */ |
| expr = build_indirect_ref (expr, "unary *"); |
| return expr; |
| } |
| /* APPLE LOCAL end radar 4982951 */ |
| |
| static tree |
| objc_substitute_decl (tree expr, tree oldexpr, tree newexpr) |
| { |
| if (expr == oldexpr) |
| return newexpr; |
| |
| switch (TREE_CODE (expr)) |
| { |
| case COMPONENT_REF: |
| return objc_build_component_ref |
| (objc_substitute_decl (TREE_OPERAND (expr, 0), |
| oldexpr, |
| newexpr), |
| DECL_NAME (TREE_OPERAND (expr, 1))); |
| case ARRAY_REF: |
| return build_array_ref (objc_substitute_decl (TREE_OPERAND (expr, 0), |
| oldexpr, |
| newexpr), |
| TREE_OPERAND (expr, 1)); |
| case INDIRECT_REF: |
| /* APPLE LOCAL begin radar 4982951 */ |
| { |
| tree ivar_offset_var; |
| ivar_offset_var = objc_v2_ivar_reference (expr); |
| if (ivar_offset_var != NULL_TREE) |
| return objc2_build_indirect_ref_ivar2 (expr, ivar_offset_var, newexpr); |
| } |
| /* APPLE LOCAL end radar 4982951 */ |
| return build_indirect_ref (objc_substitute_decl (TREE_OPERAND (expr, 0), |
| oldexpr, |
| newexpr), "->"); |
| default: |
| return expr; |
| } |
| } |
| |
| static tree |
| /* APPLE LOCAL radar 4995066 */ |
| objc_build_ivar_assignment (tree outervar, bool objc2_ivar_ref, tree lhs, tree rhs) |
| { |
| tree func_params; |
| /* The LHS parameter contains the expression 'outervar->memberspec'; |
| we need to transform it into '&((typeof(outervar) *) 0)->memberspec', |
| where memberspec may be arbitrarily complex (e.g., 'g->f.d[2].g[3]'). |
| */ |
| /* APPLE LOCAL begin radar 4783068 */ |
| tree offs, func; |
| int save_warn_invalid_offsetof = warn_invalid_offsetof; |
| warn_invalid_offsetof = 0; |
| /* APPLE LOCAL begin radar 4982951 */ |
| /* APPLE LOCAL radar 4995066 */ |
| if (flag_objc_abi == 2 && objc2_ivar_ref) |
| outervar = objc2_outervar (outervar); |
| /* APPLE LOCAL end radar 4982951 */ |
| offs |
| = objc_substitute_decl |
| (lhs, outervar, convert (TREE_TYPE (outervar), integer_zero_node)); |
| warn_invalid_offsetof = save_warn_invalid_offsetof; |
| /* APPLE LOCAL radar 4590221 */ |
| func = objc_assign_ivar_decl; |
| /* APPLE LOCAL end radar 4783068 */ |
| |
| offs = convert (integer_type_node, build_unary_op (ADDR_EXPR, offs, 0)); |
| offs = fold (offs); |
| func_params = tree_cons (NULL_TREE, |
| convert (objc_object_type, rhs), |
| tree_cons (NULL_TREE, convert (objc_object_type, outervar), |
| tree_cons (NULL_TREE, offs, |
| NULL_TREE))); |
| |
| assemble_external (func); |
| return build_function_call (func, func_params); |
| } |
| |
| static tree |
| /* APPLE LOCAL radar 4426814 */ |
| objc_build_global_assignment (tree lhs, tree rhs, int strong) |
| { |
| tree func_params = tree_cons (NULL_TREE, |
| convert (objc_object_type, rhs), |
| tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type), |
| build_unary_op (ADDR_EXPR, lhs, 0)), |
| NULL_TREE)); |
| /* APPLE LOCAL begin radar 4426814 */ |
| tree func = (strong == 1) ? objc_assign_global_decl : objc_assign_weak_decl; |
| |
| assemble_external (func); |
| return build_function_call (func, func_params); |
| /* APPLE LOCAL end radar 4426814 */ |
| } |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| |
| /* APPLE LOCAL begin radar 4591756 */ |
| /* This routine generates call to objc_read_weak (&EXPR); */ |
| |
| static tree |
| objc_build_weak_read (tree expr) |
| { |
| tree func_params; |
| expr = build_unary_op (ADDR_EXPR, expr, 1); |
| expr = convert (build_pointer_type (objc_object_type), expr); |
| func_params = tree_cons (NULL_TREE, expr, NULL_TREE); |
| |
| /* APPLE LOCAL end radar 4591756 */ |
| assemble_external (objc_read_weak_decl); |
| return build_function_call (objc_read_weak_decl, func_params); |
| } |
| |
| /* Main routine to decide if a call to objc_read_weak must be generated. |
| If so, it generates call to id objc_read_weak (id) for such __weak objects. */ |
| |
| tree |
| objc_generate_weak_read (tree expr) |
| { |
| tree t; |
| int strong; |
| |
| /* APPLE LOCAL begin radar 4486614 */ |
| #ifdef OBJCPLUS |
| if (processing_template_decl) |
| return expr; |
| #endif |
| /* APPLE LOCAL end radar 4486614 */ |
| if (skip_evaluation || TREE_TYPE (expr) == NULL_TREE) |
| return expr; |
| |
| strong = objc_is_gcable_p (expr); |
| if (strong != -1) |
| return expr; |
| /* Don't generate the call if it is already done once. */ |
| t = expr; |
| STRIP_NOPS(t); |
| while (t && TREE_CODE (t) == NOP_EXPR) |
| t = TREE_OPERAND (t,0); |
| if (t && TREE_CODE (t) == CALL_EXPR) |
| { |
| tree addr = TREE_OPERAND (t, 0); |
| STRIP_NOPS (addr); |
| if (TREE_CODE (addr) == ADDR_EXPR |
| && TREE_OPERAND (addr, 0) == objc_read_weak_decl) |
| return expr; |
| } |
| /* Also, never generate the call for an assignment used in an expression. */ |
| if (t && TREE_CODE (t) == MODIFY_EXPR) |
| return expr; |
| |
| t = TREE_TYPE (expr); |
| expr = objc_build_weak_read (expr); |
| expr = convert (t, expr); |
| return expr; |
| } |
| |
| /* Routine to remove call to objc_read_weak and replacing it with its |
| only argument. */ |
| |
| void |
| objc_remove_weak_read (tree *ref) |
| { |
| tree expr = *ref; |
| tree t = TREE_TYPE (expr); |
| |
| while (expr && TREE_CODE (expr) == NOP_EXPR) |
| expr = TREE_OPERAND (expr, 0); |
| if (expr && TREE_CODE (expr) == CALL_EXPR) |
| { |
| tree addr = TREE_OPERAND (expr, 0); |
| STRIP_NOPS (addr); |
| if (TREE_CODE (addr) == ADDR_EXPR |
| && TREE_OPERAND (addr, 0) == objc_read_weak_decl) |
| { |
| tree arg = TREE_OPERAND (expr, 1); |
| expr = TREE_VALUE (arg); |
| if (TREE_CODE (expr) == NOP_EXPR) |
| expr = TREE_OPERAND (expr, 0); |
| /* APPLE LOCAL radar 4591756 */ |
| expr = build_indirect_ref (expr, "unary *"); |
| /* When call to 'id objc_read_weak(id)' was initially generated, |
| argument to call was typecast to objc_object_type. Here we need |
| to typecast the argument back to its original type to preserve |
| its type. */ |
| *ref = convert (t, expr); |
| } |
| } |
| } |
| /* APPLE LOCAL end radar 4426814 */ |
| |
| |
| static tree |
| objc_build_strong_cast_assignment (tree lhs, tree rhs) |
| { |
| tree func_params = tree_cons (NULL_TREE, |
| convert (objc_object_type, rhs), |
| tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type), |
| build_unary_op (ADDR_EXPR, lhs, 0)), |
| NULL_TREE)); |
| |
| assemble_external (objc_assign_strong_cast_decl); |
| return build_function_call (objc_assign_strong_cast_decl, func_params); |
| } |
| |
| /* APPLE LOCAL begin radar 4592503 */ |
| /* This routine checks to see if a local variable or a structure field |
| has __weak attribute and issues warning in that case. */ |
| void |
| objc_checkon_weak_attribute (tree decl) |
| { |
| if (decl && DECL_P (decl)) |
| { |
| if (objc_collecting_ivars |
| || (TREE_CODE (decl) == VAR_DECL |
| && (TREE_STATIC (decl) || DECL_EXTERNAL (decl)))) |
| return; |
| |
| if ((TREE_CODE (decl) == FIELD_DECL || TREE_CODE (decl) == VAR_DECL) |
| && objc_is_gcable_type (TREE_TYPE (decl)) == -1) |
| { |
| location_t saved_location = input_location; |
| input_location = DECL_SOURCE_LOCATION (decl); |
| warning ("__weak attribute cannot be specified on a %s declaration", |
| TREE_CODE (decl) == FIELD_DECL ? "field" : "local object"); |
| input_location = saved_location; |
| return; |
| } |
| } |
| } |
| |
| /* APPLE LOCAL end radar 4592503 */ |
| |
| /* APPLE LOCAL begin ObjC GC */ |
| /* Return 1 if EXPR is marked with the __strong attribute, -1 if it is marked |
| with the __weak attribute, and 0 if it is marked with neither (regardless |
| if it is otherwise GC-able). */ |
| |
| static int |
| objc_is_strong_p (tree expr) |
| { |
| if (TYPE_P (expr) || DECL_P (expr)) |
| { |
| tree attr = lookup_attribute ("objc_gc", |
| (TYPE_P (expr) |
| ? TYPE_ATTRIBUTES (expr) |
| : DECL_ATTRIBUTES (expr))); |
| |
| if (attr && TREE_VALUE (attr)) |
| { |
| if (TREE_VALUE (TREE_VALUE (attr)) == get_identifier ("strong")) |
| return 1; |
| |
| if (TREE_VALUE (TREE_VALUE (attr)) == get_identifier ("weak")) |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Return 1 (__strong) if a call to a write-barrier should be generated when assigning |
| to EXPR. Return -1 if a call to objc_assign_weak should be generated when assigning |
| to EXPR with a __weak attribute; 0 otherwise. */ |
| |
| /* APPLE LOCAL end ObjC GC */ |
| static int |
| objc_is_gcable_p (tree expr) |
| { |
| /* APPLE LOCAL begin ObjC GC */ |
| tree t = TREE_TYPE (expr); |
| /* The '__strong' and '__weak' keywords trump all. */ |
| int strong = objc_is_strong_p (t); |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| if (strong) |
| return strong; |
| /* APPLE LOCAL end radar 4426814 */ |
| |
| /* Discard lvalue casts, if any. */ |
| while (TREE_CODE (expr) == INDIRECT_REF |
| && TREE_CODE (TREE_OPERAND (expr, 0)) == NOP_EXPR |
| && TREE_CODE (TREE_OPERAND (TREE_OPERAND (expr, 0), 0)) == ADDR_EXPR) |
| expr = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (expr, 0), 0), 0); |
| |
| /* Zero in on the variable/parameter being assigned to. */ |
| while (TREE_CODE (expr) == COMPONENT_REF || TREE_CODE (expr) == ARRAY_REF) |
| expr = TREE_OPERAND (expr, 0); |
| |
| /* Parameters and local variables (and their fields) are NOT GC-able. */ |
| if (TREE_CODE (expr) == PARM_DECL || |
| (TREE_CODE (expr) == VAR_DECL |
| && DECL_CONTEXT (expr) |
| && !TREE_STATIC (expr))) |
| return 0; |
| |
| return objc_is_gcable_type (t); |
| /* APPLE LOCAL end ObjC GC */ |
| } |
| |
| /* APPLE LOCAL begin radar 4894756 */ |
| /* This routine checks and returns true if tree is reference to an 'ivar' through the ivar offset |
| variable reference. See objc_v2_build_ivar_ref for detail of how this tree is generated. */ |
| |
| static |
| tree objc_v2_ivar_reference (tree expr) |
| { |
| if (flag_objc_abi < 2 || TREE_CODE (expr) != INDIRECT_REF) |
| return NULL_TREE; |
| expr = TREE_OPERAND (expr, 0); |
| if (TREE_CODE (expr) != NOP_EXPR) |
| return NULL_TREE; |
| expr = TREE_OPERAND (expr, 0); |
| if (TREE_CODE (expr) != PLUS_EXPR) |
| return NULL_TREE; |
| expr = TREE_OPERAND (expr, 1); |
| |
| return (TREE_CODE (expr) == VAR_DECL && DECL_NAME (expr) |
| && strncmp (IDENTIFIER_POINTER (DECL_NAME (expr)), STRING_V2_IVAR_OFFSET_PREFIX, |
| strlen (STRING_V2_IVAR_OFFSET_PREFIX)) == 0) ? expr : NULL_TREE; |
| } |
| /* APPLE LOCAL end radar 4894756 */ |
| |
| /* APPLE LOCAL begin radar 4591756 */ |
| static tree |
| objc_strip_off_indirection (tree expr) |
| { |
| if ((TREE_CODE (expr) == INDIRECT_REF && (objc_v2_ivar_reference (expr) == NULL_TREE)) |
| || TREE_CODE (expr) == NOP_EXPR |
| || TREE_CODE (expr) == ADDR_EXPR || TREE_CODE (expr) == PLUS_EXPR) |
| return objc_strip_off_indirection (TREE_OPERAND (expr, 0)); |
| return expr; |
| } |
| /* APPLE LOCAL end radar 4591756 */ |
| |
| /* LLVM LOCAL begin LLVM */ |
| /* llvm-gcc intentionally preserves array notation &array[i] and avoids |
| pointer arithmetic. |
| Example 1: struct { int *a; } b; b->a[2] = 42; |
| Example 2: struct { int a[42]; } b; b->a[2] = 42. |
| In both of this cases, expr is preserved as ARRAY_REF. Normally, gcc |
| would decomponse first example into a pointer arithmetic expression. |
| So in llvm mode, check expression's field type to ensure that this is really a |
| array reference or not. */ |
| static int objc_is_really_array_ref(tree expr) { |
| tree component = NULL_TREE; |
| tree field = NULL_TREE; |
| |
| if (TREE_CODE(expr) != ARRAY_REF) |
| return 0; |
| |
| component = TREE_OPERAND(expr, 0); |
| if (!component || TREE_CODE(component) != COMPONENT_REF) |
| return 0; |
| |
| field = TREE_OPERAND(component, 1); |
| if (!field || TREE_CODE(TREE_TYPE(field)) != ARRAY_TYPE) |
| return 0; |
| |
| return 1; |
| } |
| /* LLVM LOCAL end LLVM */ |
| |
| static int |
| objc_is_ivar_reference_p (tree expr) |
| { |
| /* LLVM LOCAL pointer arithmetic */ |
| return (objc_is_really_array_ref(expr) == 1 |
| ? objc_is_ivar_reference_p (TREE_OPERAND (expr, 0)) |
| : TREE_CODE (expr) == COMPONENT_REF |
| ? TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL |
| : (objc_v2_ivar_reference (expr) != NULL_TREE)); |
| } |
| |
| static int |
| objc_is_global_reference_p (tree expr) |
| { |
| return (TREE_CODE (expr) == INDIRECT_REF || TREE_CODE (expr) == PLUS_EXPR |
| ? objc_is_global_reference_p (TREE_OPERAND (expr, 0)) |
| : DECL_P (expr) |
| ? (!DECL_CONTEXT (expr) || TREE_STATIC (expr)) |
| : 0); |
| } |
| |
| tree |
| objc_generate_write_barrier (tree lhs, enum tree_code modifycode, tree rhs) |
| { |
| /* APPLE LOCAL begin ObjC GC */ |
| tree outer; |
| int indirect_p = 0; |
| /* APPLE LOCAL end ObjC GC */ |
| /* APPLE LOCAL radar 4426814 */ |
| int strong; |
| bool objc2_ivar_ref; |
| |
| /* APPLE LOCAL begin ObjC GC */ |
| /* the lhs must be of a suitable type, regardless of its underlying |
| structure. Furthermore, __weak must not have been used. */ |
| /* APPLE LOCAL radar 4426814 */ |
| if ((strong = objc_is_gcable_p (lhs)) == 0) |
| return NULL_TREE; |
| /* APPLE LOCAL end ObjC GC */ |
| |
| /* LLVM LOCAL 5541393 */ |
| if (TREE_CODE(TREE_TYPE(lhs)) != POINTER_TYPE) return NULL_TREE; |
| |
| /* APPLE LOCAL begin ObjC GC */ |
| /* At this point, we are committed to using one of the write-barriers, |
| unless the user is attempting to perform pointer arithmetic. */ |
| /* APPLE LOCAL radar 4291099 */ |
| if (modifycode != NOP_EXPR && modifycode != INIT_EXPR) |
| /* APPLE LOCAL end ObjC GC */ |
| { |
| /* APPLE LOCAL begin ObjC GC */ |
| warning ("pointer arithmetic for garbage-collected objects not allowed"); |
| return NULL_TREE; |
| /* APPLE LOCAL end ObjC GC */ |
| } |
| /* APPLE LOCAL radar 4291099 */ |
| gcc_assert (modifycode != INIT_EXPR || c_dialect_cxx ()); |
| |
| /* APPLE LOCAL ObjC GC */ |
| /* CODE FRAGMENT REMOVED. */ |
| outer = lhs; |
| |
| /* APPLE LOCAL begin radar 4591756 */ |
| if (strong == -1) |
| outer = objc_strip_off_indirection (outer); |
| /* APPLE LOCAL end radar 4591756 */ |
| while (outer |
| && (TREE_CODE (outer) == COMPONENT_REF |
| || TREE_CODE (outer) == ARRAY_REF)) |
| outer = TREE_OPERAND (outer, 0); |
| |
| objc2_ivar_ref = objc_v2_ivar_reference (outer) != NULL_TREE; |
| if (TREE_CODE (outer) == INDIRECT_REF && !objc2_ivar_ref) |
| { |
| outer = TREE_OPERAND (outer, 0); |
| indirect_p = 1; |
| } |
| |
| /* APPLE LOCAL ObjC GC */ |
| /* CODE FRAGMENT REMOVED. */ |
| |
| /* Handle ivar assignments. */ |
| /* APPLE LOCAL begin ObjC GC */ |
| /* APPLE LOCAL begin radar 4591756 */ |
| if (indirect_p && objc_is_ivar_reference_p (strong == -1 |
| ? objc_strip_off_indirection (lhs) |
| : lhs) |
| /* APPLE LOCAL end radar 4591756 */ |
| && objc_is_object_ptr (TREE_TYPE (outer))) |
| /* APPLE LOCAL end ObjC GC */ |
| { |
| /* APPLE LOCAL ObjC GC */ |
| /* CODE FRAGMENT REMOVED. */ |
| if (warn_assign_intercept) |
| warning ("instance variable assignment has been intercepted"); |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| /* APPLE LOCAL ObjC GC */ |
| return strong == 1 |
| /* APPLE LOCAL radar 4995066 */ |
| ? objc_build_ivar_assignment (outer, objc2_ivar_ref, lhs, rhs) |
| : objc_build_global_assignment (lhs, rhs, strong); |
| /* APPLE LOCAL end radar 4426814 */ |
| } |
| if (!indirect_p && objc2_ivar_ref) |
| { |
| if (warn_assign_intercept) |
| warning ("instance variable assignment has been intercepted"); |
| |
| return strong == 1 |
| /* APPLE LOCAL radar 4995066 */ |
| ? objc_build_ivar_assignment (TREE_OPERAND (outer, 0), objc2_ivar_ref, lhs, rhs) |
| : objc_build_global_assignment (lhs, rhs, strong); |
| } |
| /* Likewise, intercept assignment to global/static variables if their type is |
| GC-marked. */ |
| /* APPLE LOCAL ObjC GC */ |
| if (!indirect_p && objc_is_global_reference_p (outer)) |
| { |
| /* APPLE LOCAL ObjC GC */ |
| /* CODE FRAGMENT REMOVED. */ |
| if (warn_assign_intercept) |
| warning ("global/static variable assignment has been intercepted"); |
| |
| /* APPLE LOCAL begin radar 4426814 */ |
| /* APPLE LOCAL ObjC GC */ |
| return objc_build_global_assignment (lhs, rhs, strong); |
| /* APPLE LOCAL end radar 4426814 */ |
| } |
| /* APPLE LOCAL begin radar 4426814 */ |
| if (strong == -1) |
| return NULL_TREE; |
| /* APPLE LOCAL end radar 4426814 */ |
| |
| /* APPLE LOCAL begin ObjC GC */ |
| /* Use the strong-cast write barrier as a last resort. */ |
| if (warn_assign_intercept) |
| warning ("strong-cast assignment has been intercepted"); |
| |
| return objc_build_strong_cast_assignment (lhs, rhs); |
| /* APPLE LOCAL end ObjC GC */ |
| } |
| /* APPLE LOCAL end mainline */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* This routine returns the ivar declaration, if component is a valid ivar field; |
| NULL_TREE otherwise. On finding an ivar, it also returns the class name in CLASS. */ |
| |
| static tree |
| objc_is_ivar (tree expr, tree component, tree *class) |
| { |
| tree field = NULL_TREE; |
| tree basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); |
| |
| if (TREE_CODE (basetype) == RECORD_TYPE |
| && TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype)) |
| { |
| *class = lookup_interface (OBJC_TYPE_NAME (basetype)); |
| if (*class) |
| { |
| do |
| { |
| tree ivar_chain = CLASS_RAW_IVARS (*class); |
| if (ivar_chain) |
| { |
| field = is_ivar (ivar_chain, component); |
| if (field != NULL_TREE) |
| break; |
| } |
| *class = lookup_interface (CLASS_SUPER_NAME (*class)); |
| } |
| while (*class); |
| } |
| } |
| return field; |
| } |
| |
| /* APPLE LOCAL begin radar 4441049 */ |
| /* This routine creates an OFFSET_IVAR variable for COMPONENT_REF EXP |
| and returns it. This routine is for bitfield ivars only. */ |
| tree |
| objc_v2_component_ref_field_offset (tree exp) |
| { |
| char var_offset_name[512]; |
| tree class_name, offset; |
| tree datum = TREE_OPERAND (exp, 0); |
| tree field = TREE_OPERAND (exp, 1); |
| tree component = DECL_NAME (field); |
| |
| /* unnamed bitfields are not user ivars. */ |
| if (!component) |
| return NULL_TREE; |
| |
| if (!((flag_objc_abi == 2) |
| && (field = objc_is_ivar (datum, component, &class_name)))) |
| return NULL_TREE; |
| |
| /* This routine must only be called for bitfield ivars. */ |
| /* DECL_INITIAL macro is set to width of bitfield and can be relied on to |
| check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro |
| because it is only set when the whole struct is seen (at finish_struct) |
| and not when the ivar chain is built. */ |
| gcc_assert (DECL_INITIAL (field)); |
| |
| create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), |
| field); |
| /* NOTE! type of variable for ivar offset MUST match type of offset assumed |
| by the front-end. Otherwise, FE asserts when attempting to do futher |
| math on the tree whose one operand is one of these offsets. */ |
| offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name); |
| return offset; |
| } |
| |
| /* This routine computes the bit position from the beginning of its byte. |
| This is only done for bitfield ivars. */ |
| |
| tree |
| objc_v2_bitfield_ivar_bitpos (tree exp) |
| { |
| tree class_name; |
| int bitpos; |
| tree datum = TREE_OPERAND (exp, 0); |
| tree field = TREE_OPERAND (exp, 1); |
| tree component = DECL_NAME (field); |
| tree ivar_field; |
| |
| if (!((flag_objc_abi == 2) |
| && (ivar_field = objc_is_ivar (datum, component, &class_name)))) |
| return NULL_TREE; |
| |
| /* This routine must only be called for bitfield ivars. */ |
| /* DECL_INITIAL macro is set to width of bitfield and can be relied on to |
| check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro |
| because it is only set when the whole struct is seen (at finish_struct) |
| and not when the ivar chain is built. */ |
| gcc_assert (DECL_INITIAL (ivar_field)); |
| |
| bitpos = tree_low_cst (DECL_FIELD_BIT_OFFSET (field), 0); |
| bitpos = bitpos % BITS_PER_UNIT; |
| return build_int_cst (TREE_TYPE (bitsize_zero_node), bitpos); |
| } |
| |
| /* APPLE LOCAL end radar 4441049 */ |
| |
| /* This routine generates new abi's ivar reference tree. It amounts to generating |
| *(TYPE*)((char*)pObj + OFFSET_IVAR) when we normally generate pObj->IVAR |
| OFFSET_IVAR is an 'extern' variable holding the offset for 'IVAR' field. TYPE |
| is type of IVAR field. */ |
| |
| tree |
| objc_v2_build_ivar_ref (tree datum, tree component) |
| { |
| tree field, ref, class_name, offset, ftype, expr; |
| char var_offset_name[512]; |
| |
| if (!((flag_objc_abi == 2) |
| && (field = objc_is_ivar (datum, component, &class_name)))) |
| return NULL_TREE; |
| |
| /* APPLE LOCAL begin radar 4441049 */ |
| /* This routine only handles non-bitfield fields */ |
| /* DECL_INITIAL macro is set to width of bitfield and can be relied on to |
| check for bitfield ivars. Note that I cannot rely on DECL_BIT_FIELD macro |
| because it is only set when the whole struct is seen (at finish_struct) |
| and not when the ivar chain is built. */ |
| if (DECL_INITIAL (field)) |
| return NULL_TREE; |
| /* APPLE LOCAL end radar 4441049 */ |
| /* APPLE LOCAL begin radar 4954480 */ |
| if (TREE_CODE (datum) == INDIRECT_REF && (TREE_OPERAND (datum, 0) == NULL_TREE |
| #ifdef OBJCPLUS |
| || (TREE_CODE (TREE_OPERAND (datum, 0)) == NOP_EXPR |
| && TREE_OPERAND (TREE_OPERAND (datum, 0), 0) == null_pointer_node) |
| #endif |
| )) |
| { |
| error ("Illegal reference to 'none-fragile' ivar"); |
| return error_mark_node; |
| } |
| /* APPLE LOCAL end radar 4954480 */ |
| |
| create_ivar_offset_name (var_offset_name, CLASS_NAME (class_name), |
| field); |
| /* APPLE LOCAL radar 4441049 */ |
| offset = create_extern_decl (TREE_TYPE (size_zero_node), var_offset_name); |
| |
| ftype = TREE_TYPE (field); |
| |
| /* (char*)datum */ |
| expr = build_c_cast (string_type_node, |
| build_fold_addr_expr (datum)); |
| |
| /* (char*)datum + offset */ |
| expr = fold (build2 (PLUS_EXPR, string_type_node, expr, offset)); |
| |
| /* (ftype*)((char*)datum + offset) */ |
| expr = build_c_cast (build_pointer_type (ftype), expr); |
| |
| /* Finally: *(ftype*)((char*)datum + offset) */ |
| ref = build_indirect_ref (expr, "unary *"); |
| |
| /* We must set type of the resulting expression to be the same as the |
| field type. This is because, build_indirect_ref (...) rebuilds the |
| type which may result in lost information; as in the case of |
| protocol-qualified types (id <protocol> ). */ |
| TREE_TYPE (ref) = ftype; |
| |
| if (TREE_READONLY (datum) || TREE_READONLY (field)) |
| TREE_READONLY (ref) = 1; |
| |
| if (TREE_THIS_VOLATILE (datum) || TREE_THIS_VOLATILE (field)) |
| TREE_THIS_VOLATILE (ref) = 1; |
| |
| if (TREE_DEPRECATED (field)) |
| warn_deprecated_use (field); |
| |
| /* APPLE LOCAL begin "unavailable" attribute (radar 2809697) */ |
| if (TREE_UNAVAILABLE (field)) |
| warn_unavailable_use (field); |
| /* APPLE LOCAL end "unavailable" attribute (radar 2809697) */ |
| |
| return ref; |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| static tree |
| lookup_interface (tree ident) |
| { |
| /* APPLE LOCAL mainline */ |
| /* tree chain; */ |
| |
| #ifdef OBJCPLUS |
| if (ident && TREE_CODE (ident) == TYPE_DECL) |
| ident = DECL_NAME (ident); |
| #endif |
| /* APPLE LOCAL begin mainline */ |
| return (ident && TREE_CODE (ident) == IDENTIFIER_NODE |
| ? IDENTIFIER_INTERFACE_VALUE (ident) |
| : NULL_TREE); |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| /* Implement @defs (<classname>) within struct bodies. */ |
| |
| tree |
| objc_get_class_ivars (tree class_name) |
| { |
| tree interface = lookup_interface (class_name); |
| |
| if (interface) |
| /* APPLE LOCAL mainline */ |
| return get_class_ivars (interface, true); |
| |
| error ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (class_name)); |
| |
| return error_mark_node; |
| } |
| |
| /* APPLE LOCAL begin radar 4291785 */ |
| /* Generate an error for any duplicate field names in FIELDLIST. Munge |
| the list such that this does not present a problem later. */ |
| |
| void |
| objc_detect_field_duplicates (tree fieldlist) |
| { |
| tree x, y; |
| int timeout = 10; |
| #ifdef OBJCPLUS |
| /* for objective-c++, we only care about duplicate checking of ivars. */ |
| if (!objc_collecting_ivars) |
| return; |
| #endif |
| |
| /* First, see if there are more than "a few" fields. |
| This is trivially true if there are zero or one fields. */ |
| if (!fieldlist) |
| return; |
| x = TREE_CHAIN (fieldlist); |
| if (!x) |
| return; |
| do { |
| timeout--; |
| x = TREE_CHAIN (x); |
| } while (timeout > 0 && x); |
| |
| /* If there were "few" fields, avoid the overhead of allocating |
| a hash table. Instead just do the nested traversal thing. */ |
| if (timeout > 0) |
| { |
| for (x = TREE_CHAIN (fieldlist); x ; x = TREE_CHAIN (x)) |
| if (DECL_NAME (x)) |
| { |
| for (y = fieldlist; y != x; y = TREE_CHAIN (y)) |
| if (DECL_NAME (y) == DECL_NAME (x)) |
| { |
| if (objc_collecting_ivars) |
| { |
| error ("%Jduplicate member %qD", y, y); |
| DECL_NAME (y) = NULL_TREE; |
| } |
| else |
| { |
| error ("%Jduplicate member %qD", x, x); |
| DECL_NAME (x) = NULL_TREE; |
| } |
| } |
| } |
| } |
| else |
| { |
| htab_t htab = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); |
| void **slot; |
| |
| for (x = fieldlist; x ; x = TREE_CHAIN (x)) |
| if ((y = DECL_NAME (x)) != 0) |
| { |
| slot = htab_find_slot (htab, y, INSERT); |
| if (*slot) |
| { |
| if (objc_collecting_ivars) |
| { |
| tree z; |
| /* Hackery to get the correct position of the duplicate field. |
| It is slow, but we are reporting error, remember. */ |
| for (z = fieldlist; z ; z = TREE_CHAIN (z)) |
| if (DECL_NAME (x) == DECL_NAME (z)) |
| { |
| error ("%Jduplicate member %qD", z, z); |
| DECL_NAME (z) = NULL_TREE; |
| break; |
| } |
| } |
| else |
| { |
| error ("%Jduplicate member %qD", x, x); |
| DECL_NAME (x) = NULL_TREE; |
| } |
| } |
| *slot = y; |
| } |
| |
| htab_delete (htab); |
| } |
| } |
| |
| /* For current interface with inherited interface chain, this function returns the |
| flattened list of ivars in current and inherited interfaces. Otherwise, it |
| returns the argument passed to it. */ |
| tree |
| objc_get_interface_ivars (tree fieldlist) |
| { |
| tree ivar_chain; |
| tree interface; |
| if (!objc_collecting_ivars || !objc_interface_context |
| || TREE_CODE (objc_interface_context) != CLASS_INTERFACE_TYPE |
| || CLASS_SUPER_NAME (objc_interface_context) == NULL_TREE) |
| return fieldlist; |
| interface = objc_interface_context; |
| gcc_assert (TOTAL_CLASS_RAW_IVARS (objc_interface_context) == NULL_TREE); |
| ivar_chain = copy_list (CLASS_RAW_IVARS (interface)); |
| if (CLASS_SUPER_NAME (interface)) |
| { |
| /* Prepend super-class ivars. */ |
| interface = lookup_interface (CLASS_SUPER_NAME (interface)); |
| /* Root base interface may not have its TOTAL_CLASS_RAW_IVARS set yet. */ |
| if (TOTAL_CLASS_RAW_IVARS (interface) == NULL_TREE) |
| TOTAL_CLASS_RAW_IVARS (interface) = copy_list (CLASS_RAW_IVARS (interface)); |
| ivar_chain = chainon (ivar_chain, TOTAL_CLASS_RAW_IVARS (interface)); |
| } |
| TOTAL_CLASS_RAW_IVARS (objc_interface_context) = ivar_chain; |
| return ivar_chain; |
| } |
| /* APPLE LOCAL end radar 4291785 */ |
| |
| /* Used by: build_private_template, continue_class, |
| and for @defs constructs. */ |
| |
| static tree |
| /* APPLE LOCAL mainline */ |
| get_class_ivars (tree interface, bool inherited) |
| { |
| tree ivar_chain = copy_list (CLASS_RAW_IVARS (interface)); |
| |
| /* Both CLASS_RAW_IVARS and CLASS_IVARS contain a list of ivars declared |
| by the current class (i.e., they do not include super-class ivars). |
| However, the CLASS_IVARS list will be side-effected by a call to |
| finish_struct(), which will fill in field offsets. */ |
| if (!CLASS_IVARS (interface)) |
| CLASS_IVARS (interface) = ivar_chain; |
| |
| /* APPLE LOCAL begin mainline */ |
| if (!inherited) |
| return ivar_chain; |
| |
| /* APPLE LOCAL end mainline */ |
| while (CLASS_SUPER_NAME (interface)) |
| { |
| /* Prepend super-class ivars. */ |
| interface = lookup_interface (CLASS_SUPER_NAME (interface)); |
| ivar_chain = chainon (copy_list (CLASS_RAW_IVARS (interface)), |
| ivar_chain); |
| } |
| |
| return ivar_chain; |
| } |
| |
| static tree |
| objc_create_temporary_var (tree type) |
| { |
| tree decl; |
| |
| decl = build_decl (VAR_DECL, NULL_TREE, type); |
| TREE_USED (decl) = 1; |
| DECL_ARTIFICIAL (decl) = 1; |
| DECL_IGNORED_P (decl) = 1; |
| DECL_CONTEXT (decl) = current_function_decl; |
| |
| return decl; |
| } |
| |
| /* APPLE LOCAL begin radar 2848255 */ |
| static tree |
| create_weak_decl (tree type, const char *name) |
| { |
| tree decl = create_global_decl (type, name); |
| DECL_WEAK (decl) = 1; |
| return decl; |
| } |
| |
| /* This routine builds objc2's typeinfo type for the purpose of zero-cost exception. |
| Declaration of this type is: |
| |
| struct _objc_ehtype_t { |
| void *_objc_ehtype_vtable; |
| const char *className; |
| struct class_t *const cls; |
| } |
| */ |
| |
| static void |
| objc2_build_ehtype (void) |
| { |
| tree field_decl, field_decl_chain; |
| objc2_ehtype_template = start_struct (RECORD_TYPE, |
| get_identifier ("_objc_ehtype_t")); |
| |
| /* void *_objc_ehtype_vtable; */ |
| field_decl = create_field_decl (ptr_type_node, "_objc_ehtype_vtable"); |
| field_decl_chain = field_decl; |
| |
| /* const char *className; */ |
| field_decl = create_field_decl (string_type_node, "className"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct class_t *const cls; */ |
| field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), |
| "cls"); |
| chainon (field_decl_chain, field_decl); |
| finish_struct (objc2_ehtype_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* Declare objc_ehtype_vtable and OBJC_EHTYPE_id. */ |
| static |
| void init_UOBJC2_EHTYPE_decls (void) |
| { |
| /* declare extern void *objc_ehtype_vtable */ |
| if (!UOBJC2_EHTYPE_VTABLE_decl) |
| { |
| UOBJC2_EHTYPE_VTABLE_decl = lookup_name (get_identifier ("objc_ehtype_vtable")); |
| if (!UOBJC2_EHTYPE_VTABLE_decl) |
| UOBJC2_EHTYPE_VTABLE_decl = create_extern_decl (ptr_type_node, |
| "objc_ehtype_vtable"); |
| } |
| /* declare extern struct _objc_ehtype_t OBJC_EHTYPE_id; */ |
| if (!UOBJC2_EHTYPE_id_decl) |
| { |
| UOBJC2_EHTYPE_id_decl = lookup_name (get_identifier ("OBJC_EHTYPE_id")); |
| if (!UOBJC2_EHTYPE_id_decl) |
| UOBJC2_EHTYPE_id_decl = create_extern_decl (objc2_ehtype_template, |
| "OBJC_EHTYPE_id"); |
| } |
| |
| } |
| |
| /* This routine builds initializer list for object of type struct _objc_ehtype_t. |
| */ |
| |
| static tree |
| objc2_build_ehtype_initializer (tree name, tree cls) |
| { |
| tree initlist = NULL_TREE; |
| tree addr; |
| init_UOBJC2_EHTYPE_decls (); |
| /* APPLE LOCAL begin radar 4995942 */ |
| /* _objc_ehtype_vtable + 2*sizeof(void*) */ |
| addr = |
| fold (build2 (MULT_EXPR, ptr_type_node, |
| TYPE_SIZE_UNIT (ptr_type_node), build_int_cst (NULL_TREE, 2))); |
| addr = fold (build2 (PLUS_EXPR, ptr_type_node, |
| build_fold_addr_expr (UOBJC2_EHTYPE_VTABLE_decl), addr)); |
| initlist = tree_cons (NULL_TREE, addr, initlist); |
| /* APPLE LOCAL end radar 4995942 */ |
| |
| /* className */ |
| initlist = tree_cons (NULL_TREE, name, initlist); |
| |
| /* cls */ |
| initlist = tree_cons (NULL_TREE, cls, initlist); |
| |
| return objc_build_constructor (objc2_ehtype_template, nreverse (initlist)); |
| } |
| |
| static char* |
| objc2_internal_ehtype_name (tree cls_name_ident) |
| { |
| static char string[BUFSIZE]; |
| sprintf (string, "%s_%s", STRING_V2_OBJC_EHTYPE_PREFIX, IDENTIFIER_POINTER (cls_name_ident)); |
| return string; |
| } |
| |
| /* This routine declares objective-c's 'typeinfo' data structure. */ |
| |
| static tree |
| /* APPLE LOCAL radar 5008110 */ |
| objc2_build_ehtype_var_decl (tree cls_name_ident, bool extern_decl, bool weak_decl) |
| { |
| tree initlist, ehtype_vdecl; |
| tree name_expr, class_name_expr; |
| |
| const char* string = objc2_internal_ehtype_name (cls_name_ident); |
| /* APPLE LOCAL begin radar 5008110 */ |
| if (extern_decl) |
| return create_extern_decl (objc2_ehtype_template, string); |
| name_expr = add_objc_string (cls_name_ident, class_names); |
| class_name_expr = create_extern_decl (objc_v2_class_template, |
| objc_build_internal_classname (cls_name_ident, false)); |
| class_name_expr = build_fold_addr_expr (class_name_expr); |
| ehtype_vdecl = weak_decl ? create_weak_decl (objc2_ehtype_template, string) |
| : create_global_decl (objc2_ehtype_template, string); |
| /* APPLE LOCAL end radar 5008110 */ |
| initlist = objc2_build_ehtype_initializer (name_expr, class_name_expr); |
| finish_var_decl (ehtype_vdecl, initlist); |
| return ehtype_vdecl; |
| } |
| |
| #ifdef OBJCPLUS |
| /* This routine returns true if TYPE is a valid objective-c type which can be |
| used in a @catch clause */ |
| bool |
| objc2_valid_objc_catch_type (tree type) |
| { |
| return flag_objc_zerocost_exceptions && type |
| && type != error_mark_node && POINTER_TYPE_P (type) |
| && (objc_is_object_id (TREE_TYPE (type)) || TYPED_OBJECT (TREE_TYPE (type))); |
| } |
| #endif |
| |
| /* APPLE LOCAL begin radar 5008110 */ |
| /* This routine returns TRUE if CLS or any of its super classes have their |
| __objc_exception__ atttribute set. |
| */ |
| static bool |
| objc2_objc_exception_attr (tree cls) |
| { |
| tree chain; |
| while (cls) |
| { |
| for (chain = CLASS_ATTRIBUTES (cls); chain; chain = TREE_CHAIN (chain)) |
| if (is_attribute_p ("objc_exception", TREE_PURPOSE (chain))) |
| return true; |
| cls = lookup_interface (CLASS_SUPER_NAME (cls)); |
| } |
| |
| return false; |
| } |
| |
| /* APPLE LOCAL end radar 5008110 */ |
| |
| /* This hook, called via lang_eh_runtime_type, generates a runtime object |
| which is either the address of the 'OBJC_EHTYPE_$_class' object or |
| address of external OBJC_EHTYPE_id object. |
| */ |
| static tree |
| objc2_eh_runtime_type (tree type) |
| { |
| tree t; |
| if (type == error_mark_node) |
| return type; |
| if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) |
| return build_fold_addr_expr (UOBJC2_EHTYPE_id_decl); |
| if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type))) |
| { |
| #ifdef OBJCPLUS |
| /* This routine is also called for c++'s catch clause; in which case, |
| we use c++'s typeinfo decl. */ |
| return objcp_build_eh_type_type (type); |
| #else |
| error ("non-objective-c type '%T' cannot be caught", type); |
| return error_mark_node; |
| #endif |
| } |
| |
| t = OBJC_TYPE_NAME (TREE_TYPE (type)); |
| /* APPLE LOCAL begin radar 5008110 */ |
| t = objc2_build_ehtype_var_decl (t, |
| objc2_objc_exception_attr (lookup_interface (t)), true); |
| /* APPLE LOCAL end radar 5008110 */ |
| return build_fold_addr_expr (t); |
| } |
| |
| /* APPLE LOCAL begin radar 4951324 */ |
| /* This routine declares an external class object to be used by |
| objc2_build_ehtype_var_decl routine. */ |
| static void |
| objc2_build_extern_decl_catch_object (tree type) |
| { |
| if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) |
| return; |
| |
| if (POINTER_TYPE_P (type) && TYPED_OBJECT (TREE_TYPE (type))) |
| { |
| tree t = OBJC_TYPE_NAME (TREE_TYPE (type)); |
| (void)add_objc_string (t, class_names); |
| (void) create_extern_decl (objc_v2_class_template, |
| objc_build_internal_classname (t, false)); |
| if (objc2_objc_exception_attr (lookup_interface (t))) |
| (void) create_extern_decl (objc2_ehtype_template, objc2_internal_ehtype_name (t)); |
| } |
| } |
| /* APPLE LOCAL end radar 4951324 */ |
| /* APPLE LOCAL end radar 2848255 */ |
| |
| |
| /* Exception handling constructs. We begin by having the parser do most |
| of the work and passing us blocks. What we do next depends on whether |
| we're doing "native" exception handling or legacy Darwin setjmp exceptions. |
| We abstract all of this in a handful of appropriately named routines. */ |
| |
| /* Stack of open try blocks. */ |
| |
| struct objc_try_context |
| { |
| struct objc_try_context *outer; |
| |
| /* Statements (or statement lists) as processed by the parser. */ |
| tree try_body; |
| tree finally_body; |
| |
| /* Some file position locations. */ |
| location_t try_locus; |
| location_t end_try_locus; |
| location_t end_catch_locus; |
| location_t finally_locus; |
| location_t end_finally_locus; |
| |
| /* A STATEMENT_LIST of CATCH_EXPRs, appropriate for sticking into op1 |
| of a TRY_CATCH_EXPR. Even when doing Darwin setjmp. */ |
| tree catch_list; |
| |
| /* The CATCH_EXPR of an open @catch clause. */ |
| tree current_catch; |
| |
| /* The VAR_DECL holding the Darwin equivalent of EXC_PTR_EXPR. */ |
| tree caught_decl; |
| tree stack_decl; |
| tree rethrow_decl; |
| }; |
| |
| static struct objc_try_context *cur_try_context; |
| |
| /* This hook, called via lang_eh_runtime_type, generates a runtime object |
| that represents TYPE. For Objective-C, this is just the class name. */ |
| /* ??? Isn't there a class object or some such? Is it easy to get? */ |
| |
| #ifndef OBJCPLUS |
| static tree |
| objc_eh_runtime_type (tree type) |
| { |
| return add_objc_string (OBJC_TYPE_NAME (TREE_TYPE (type)), class_names); |
| } |
| #endif |
| |
| |
| /* Initialize exception handling. */ |
| |
| static void |
| objc_init_exceptions (void) |
| { |
| static bool done = false; |
| if (done) |
| return; |
| done = true; |
| |
| /* APPLE LOCAL begin radar 4590191 */ |
| if (flag_objc_sjlj_exceptions) |
| { |
| /* LLVM LOCAL begin */ |
| OBJC_FLAG_SJLJ_EXCEPTIONS; |
| /* LLVM LOCAL end */ |
| /* APPLE LOCAL end radar 4590191 */ |
| /* APPLE LOCAL radar 4512786. */ |
| /* code removed */ |
| } |
| /* APPLE LOCAL begin radar 2848255 */ |
| else if (flag_objc_zerocost_exceptions) |
| { |
| #ifndef OBJCPLUS |
| c_eh_initialized_p = true; |
| #endif |
| /* APPPLE LOCAL radar 5023725 */ |
| OBJC_FLAG_ZEROCOST_EXCEPTIONS; |
| eh_personality_libfunc |
| = init_one_libfunc ("__objc_personality_v0"); |
| using_eh_for_cleanups (); |
| lang_eh_runtime_type = objc2_eh_runtime_type; |
| /* APPLE LOCAL radar 4951324 */ |
| init_UOBJC2_EHTYPE_decls (); |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| #ifndef OBJCPLUS |
| else |
| { |
| c_eh_initialized_p = true; |
| eh_personality_libfunc |
| = init_one_libfunc (USING_SJLJ_EXCEPTIONS |
| ? "__gnu_objc_personality_sj0" |
| : "__gnu_objc_personality_v0"); |
| /* APPLE LOCAL begin LLVM */ |
| default_init_unwind_resume_libfunc (); |
| /* APPLE LOCAL end LLVM */ |
| using_eh_for_cleanups (); |
| lang_eh_runtime_type = objc_eh_runtime_type; |
| } |
| #endif |
| } |
| |
| /* Build an EXC_PTR_EXPR, or the moral equivalent. In the case of Darwin, |
| we'll arrange for it to be initialized (and associated with a binding) |
| later. */ |
| |
| static tree |
| objc_build_exc_ptr (void) |
| { |
| if (flag_objc_sjlj_exceptions) |
| { |
| tree var = cur_try_context->caught_decl; |
| if (!var) |
| { |
| var = objc_create_temporary_var (objc_object_type); |
| cur_try_context->caught_decl = var; |
| } |
| return var; |
| } |
| else |
| return build (EXC_PTR_EXPR, objc_object_type); |
| } |
| |
| /* Build "objc_exception_try_exit(&_stack)". */ |
| |
| static tree |
| next_sjlj_build_try_exit (void) |
| { |
| tree t; |
| t = build_fold_addr_expr (cur_try_context->stack_decl); |
| t = tree_cons (NULL, t, NULL); |
| t = build_function_call (objc_exception_try_exit_decl, t); |
| return t; |
| } |
| |
| /* Build |
| objc_exception_try_enter (&_stack); |
| if (_setjmp(&_stack.buf)) |
| ; |
| else |
| ; |
| Return the COND_EXPR. Note that the THEN and ELSE fields are left |
| empty, ready for the caller to fill them in. */ |
| |
| static tree |
| next_sjlj_build_enter_and_setjmp (void) |
| { |
| tree t, enter, sj, cond; |
| |
| t = build_fold_addr_expr (cur_try_context->stack_decl); |
| t = tree_cons (NULL, t, NULL); |
| enter = build_function_call (objc_exception_try_enter_decl, t); |
| |
| /* APPLE LOCAL begin mainline */ |
| t = objc_build_component_ref (cur_try_context->stack_decl, |
| get_identifier ("buf")); |
| /* APPLE LOCAL end mainline */ |
| t = build_fold_addr_expr (t); |
| /* APPLE LOCAL begin mainline */ |
| #ifdef OBJCPLUS |
| /* Convert _setjmp argument to type that is expected. */ |
| if (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))) |
| t = convert (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))), t); |
| else |
| #endif |
| /* APPLE LOCAL end mainline */ |
| t = convert (ptr_type_node, t); |
| t = tree_cons (NULL, t, NULL); |
| sj = build_function_call (objc_setjmp_decl, t); |
| |
| cond = build (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj); |
| cond = lang_hooks.truthvalue_conversion (cond); |
| |
| return build (COND_EXPR, void_type_node, cond, NULL, NULL); |
| } |
| |
| /* Build: |
| |
| DECL = objc_exception_extract(&_stack); */ |
| |
| static tree |
| next_sjlj_build_exc_extract (tree decl) |
| { |
| tree t; |
| |
| t = build_fold_addr_expr (cur_try_context->stack_decl); |
| t = tree_cons (NULL, t, NULL); |
| t = build_function_call (objc_exception_extract_decl, t); |
| t = convert (TREE_TYPE (decl), t); |
| t = build (MODIFY_EXPR, void_type_node, decl, t); |
| |
| return t; |
| } |
| |
| /* Build |
| if (objc_exception_match(obj_get_class(TYPE), _caught) |
| BODY |
| else if (...) |
| ... |
| else |
| { |
| _rethrow = _caught; |
| objc_exception_try_exit(&_stack); |
| } |
| from the sequence of CATCH_EXPRs in the current try context. */ |
| |
| static tree |
| next_sjlj_build_catch_list (void) |
| { |
| tree_stmt_iterator i = tsi_start (cur_try_context->catch_list); |
| tree catch_seq, t; |
| tree *last = &catch_seq; |
| bool saw_id = false; |
| |
| for (; !tsi_end_p (i); tsi_next (&i)) |
| { |
| tree stmt = tsi_stmt (i); |
| tree type = CATCH_TYPES (stmt); |
| tree body = CATCH_BODY (stmt); |
| |
| if (type == NULL) |
| { |
| *last = body; |
| saw_id = true; |
| break; |
| } |
| else |
| { |
| tree args, cond; |
| |
| if (type == error_mark_node) |
| cond = error_mark_node; |
| else |
| { |
| args = tree_cons (NULL, cur_try_context->caught_decl, NULL); |
| t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type))); |
| args = tree_cons (NULL, t, args); |
| t = build_function_call (objc_exception_match_decl, args); |
| cond = lang_hooks.truthvalue_conversion (t); |
| } |
| t = build (COND_EXPR, void_type_node, cond, body, NULL); |
| SET_EXPR_LOCUS (t, EXPR_LOCUS (stmt)); |
| |
| *last = t; |
| last = &COND_EXPR_ELSE (t); |
| } |
| } |
| |
| if (!saw_id) |
| { |
| t = build (MODIFY_EXPR, void_type_node, cur_try_context->rethrow_decl, |
| cur_try_context->caught_decl); |
| SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus); |
| append_to_statement_list (t, last); |
| |
| t = next_sjlj_build_try_exit (); |
| SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus); |
| append_to_statement_list (t, last); |
| } |
| |
| return catch_seq; |
| } |
| |
| /* Build a complete @try-@catch-@finally block for legacy Darwin setjmp |
| exception handling. We aim to build: |
| |
| { |
| struct _objc_exception_data _stack; |
| id volatile _rethrow = 0; |
| try |
| { |
| objc_exception_try_enter (&_stack); |
| if (_setjmp(&_stack.buf)) |
| { |
| id _caught = objc_exception_extract(&_stack); |
| objc_exception_try_enter (&_stack); |
| if (_setjmp(&_stack.buf)) |
| _rethrow = objc_exception_extract(&_stack); |
| else |
| CATCH-LIST |
| } |
| else |
| TRY-BLOCK |
| } |
| finally |
| { |
| if (!_rethrow) |
| objc_exception_try_exit(&_stack); |
| FINALLY-BLOCK |
| if (_rethrow) |
| objc_exception_throw(_rethrow); |
| } |
| } |
| |
| If CATCH-LIST is empty, we can omit all of the block containing |
| "_caught" except for the setting of _rethrow. Note the use of |
| a real TRY_FINALLY_EXPR here, which is not involved in EH per-se, |
| but handles goto and other exits from the block. */ |
| |
| static tree |
| next_sjlj_build_try_catch_finally (void) |
| { |
| tree rethrow_decl, stack_decl, t; |
| tree catch_seq, try_fin, bind; |
| |
| /* Create the declarations involved. */ |
| t = xref_tag (RECORD_TYPE, get_identifier (UTAG_EXCDATA)); |
| stack_decl = objc_create_temporary_var (t); |
| cur_try_context->stack_decl = stack_decl; |
| |
| rethrow_decl = objc_create_temporary_var (objc_object_type); |
| cur_try_context->rethrow_decl = rethrow_decl; |
| TREE_THIS_VOLATILE (rethrow_decl) = 1; |
| TREE_CHAIN (rethrow_decl) = stack_decl; |
| |
| /* Build the outermost variable binding level. */ |
| bind = build (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL); |
| SET_EXPR_LOCATION (bind, cur_try_context->try_locus); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| |
| /* Initialize rethrow_decl. */ |
| t = build (MODIFY_EXPR, void_type_node, rethrow_decl, |
| convert (objc_object_type, null_pointer_node)); |
| SET_EXPR_LOCATION (t, cur_try_context->try_locus); |
| append_to_statement_list (t, &BIND_EXPR_BODY (bind)); |
| |
| /* Build the outermost TRY_FINALLY_EXPR. */ |
| try_fin = build (TRY_FINALLY_EXPR, void_type_node, NULL, NULL); |
| SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus); |
| TREE_SIDE_EFFECTS (try_fin) = 1; |
| append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind)); |
| |
| /* Create the complete catch sequence. */ |
| if (cur_try_context->catch_list) |
| { |
| tree caught_decl = objc_build_exc_ptr (); |
| catch_seq = build_stmt (BIND_EXPR, caught_decl, NULL, NULL); |
| |
| t = next_sjlj_build_exc_extract (caught_decl); |
| append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq)); |
| |
| t = next_sjlj_build_enter_and_setjmp (); |
| COND_EXPR_THEN (t) = next_sjlj_build_exc_extract (rethrow_decl); |
| COND_EXPR_ELSE (t) = next_sjlj_build_catch_list (); |
| append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq)); |
| } |
| else |
| catch_seq = next_sjlj_build_exc_extract (rethrow_decl); |
| SET_EXPR_LOCATION (catch_seq, cur_try_context->end_try_locus); |
| |
| /* Build the main register-and-try if statement. */ |
| t = next_sjlj_build_enter_and_setjmp (); |
| SET_EXPR_LOCATION (t, cur_try_context->try_locus); |
| COND_EXPR_THEN (t) = catch_seq; |
| COND_EXPR_ELSE (t) = cur_try_context->try_body; |
| TREE_OPERAND (try_fin, 0) = t; |
| |
| /* Build the complete FINALLY statement list. */ |
| t = next_sjlj_build_try_exit (); |
| t = build_stmt (COND_EXPR, |
| lang_hooks.truthvalue_conversion (rethrow_decl), |
| NULL, t); |
| SET_EXPR_LOCATION (t, cur_try_context->finally_locus); |
| append_to_statement_list (t, &TREE_OPERAND (try_fin, 1)); |
| |
| append_to_statement_list (cur_try_context->finally_body, |
| &TREE_OPERAND (try_fin, 1)); |
| |
| t = tree_cons (NULL, rethrow_decl, NULL); |
| t = build_function_call (objc_exception_throw_decl, t); |
| t = build_stmt (COND_EXPR, |
| lang_hooks.truthvalue_conversion (rethrow_decl), |
| t, NULL); |
| SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus); |
| append_to_statement_list (t, &TREE_OPERAND (try_fin, 1)); |
| |
| return bind; |
| } |
| |
| /* Called just after parsing the @try and its associated BODY. We now |
| must prepare for the tricky bits -- handling the catches and finally. */ |
| |
| void |
| objc_begin_try_stmt (location_t try_locus, tree body) |
| { |
| struct objc_try_context *c = xcalloc (1, sizeof (*c)); |
| c->outer = cur_try_context; |
| c->try_body = body; |
| c->try_locus = try_locus; |
| c->end_try_locus = input_location; |
| cur_try_context = c; |
| |
| objc_init_exceptions (); |
| /* APPLE LOCAL begin mainline */ |
| |
| if (flag_objc_sjlj_exceptions) |
| objc_mark_locals_volatile (NULL); |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| /* Called just after parsing "@catch (parm)". Open a binding level, |
| enter DECL into the binding level, and initialize it. Leave the |
| binding level open while the body of the compound statement is parsed. |
| a DECL of NULL_TREE indicates that we are dealing with @catch(...) */ |
| |
| void |
| objc_begin_catch_clause (tree decl) |
| { |
| tree compound, type, t; |
| |
| /* Begin a new scope that the entire catch clause will live in. */ |
| compound = c_begin_compound_stmt (true); |
| |
| /* APPLE LOCAL begin radar 2848255 */ |
| if (decl == NULL_TREE) |
| { |
| /* @catch (...) */ |
| if (flag_objc_zerocost_exceptions) |
| { |
| t = build_stmt (CATCH_EXPR, NULL_TREE, compound); |
| cur_try_context->current_catch = t; |
| t = objc_build_exc_ptr (); |
| t = build_function_call (objc2_begin_catch_decl, |
| tree_cons (NULL_TREE, t, NULL_TREE)); |
| add_stmt (t); |
| return; |
| } |
| else |
| /* APPLE LOCAL begin radar 4995967 */ |
| /* Assumes @catch (...) is same as @catch (id). */ |
| decl = create_tmp_var_raw (objc_object_type, NULL); |
| /* APPLE LOCAL end radar 4995967 */ |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| |
| /* The parser passed in a PARM_DECL, but what we really want is a VAR_DECL. */ |
| decl = build_decl (VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl)); |
| lang_hooks.decls.pushdecl (decl); |
| |
| /* Since a decl is required here by syntax, don't warn if its unused. */ |
| /* ??? As opposed to __attribute__((unused))? Anyway, this appears to |
| be what the previous objc implementation did. */ |
| TREE_USED (decl) = 1; |
| |
| /* Verify that the type of the catch is valid. It must be a pointer |
| to an Objective-C class, or "id" (which is catch-all). */ |
| type = TREE_TYPE (decl); |
| |
| if (POINTER_TYPE_P (type) && objc_is_object_id (TREE_TYPE (type))) |
| /* APPLE LOCAL radar 2848255 */ |
| type = !flag_objc_zerocost_exceptions ? NULL : type; |
| else if (!POINTER_TYPE_P (type) || !TYPED_OBJECT (TREE_TYPE (type))) |
| { |
| error ("@catch parameter is not a known Objective-C class type"); |
| type = error_mark_node; |
| } |
| else if (cur_try_context->catch_list) |
| { |
| /* Examine previous @catch clauses and see if we've already |
| caught the type in question. */ |
| tree_stmt_iterator i = tsi_start (cur_try_context->catch_list); |
| for (; !tsi_end_p (i); tsi_next (&i)) |
| { |
| tree stmt = tsi_stmt (i); |
| t = CATCH_TYPES (stmt); |
| if (t == error_mark_node) |
| continue; |
| /* APPLE LOCAL mainline */ |
| if (!t || DERIVED_FROM_P (TREE_TYPE (t), TREE_TYPE (type))) |
| { |
| warning ("exception of type %<%T%> will be caught", |
| TREE_TYPE (type)); |
| warning ("%H by earlier handler for %<%T%>", |
| EXPR_LOCUS (stmt), TREE_TYPE (t ? t : objc_object_type)); |
| break; |
| } |
| } |
| } |
| |
| /* Record the data for the catch in the try context so that we can |
| finalize it later. */ |
| t = build_stmt (CATCH_EXPR, type, compound); |
| cur_try_context->current_catch = t; |
| |
| /* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */ |
| t = objc_build_exc_ptr (); |
| t = convert (TREE_TYPE (decl), t); |
| /* APPLE LOCAL begin radar 2848255 - radar 4951324 */ |
| if (flag_objc_zerocost_exceptions) |
| { |
| /* Decl an external declaration for the objc class for this catch type. */ |
| objc2_build_extern_decl_catch_object (type); |
| t = build_function_call (objc2_begin_catch_decl, |
| tree_cons (NULL_TREE, t, NULL_TREE)); |
| } |
| /* APPLE LOCAL end radar 2848255 - radar 4951324 */ |
| t = build (MODIFY_EXPR, void_type_node, decl, t); |
| add_stmt (t); |
| } |
| |
| /* APPLE LOCAL begin radar 2848255 */ |
| /* This routine adds a finally { objc_end_catch (); } block to end of try-block. */ |
| static tree |
| objc2_liteweight_finish_try_stmt (void) |
| { |
| struct objc_try_context *c = cur_try_context; |
| tree stmt, t; |
| |
| stmt = c->try_body; |
| t = build_function_call (objc2_end_catch_decl, NULL_TREE); |
| append_to_statement_list (t, &c->finally_body); |
| stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body); |
| SET_EXPR_LOCATION (stmt, c->try_locus); |
| |
| cur_try_context = c->outer; |
| free (c); |
| return stmt; |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| |
| /* Called just after parsing the closing brace of a @catch clause. Close |
| the open binding level, and record a CATCH_EXPR for it. */ |
| |
| void |
| objc_finish_catch_clause (void) |
| { |
| tree c = cur_try_context->current_catch; |
| cur_try_context->current_catch = NULL; |
| cur_try_context->end_catch_locus = input_location; |
| |
| CATCH_BODY (c) = c_end_compound_stmt (CATCH_BODY (c), 1); |
| /* APPLE LOCAL begin radar 2848255 */ |
| if (flag_objc_zerocost_exceptions) |
| { |
| /* try { catch-body } finally { objc_end_catch (); } */ |
| tree try_exp, t; |
| t = CATCH_BODY (c); |
| if (TREE_CODE (t) == BIND_EXPR) |
| { |
| /* more common case of @catch (objc-expr). */ |
| objc_begin_try_stmt (cur_try_context->try_locus, BIND_EXPR_BODY (t)); |
| try_exp = objc2_liteweight_finish_try_stmt (); |
| BIND_EXPR_BODY (t) = NULL_TREE; |
| append_to_statement_list (try_exp, &BIND_EXPR_BODY (t)); |
| } |
| else |
| { |
| /* case of the new @catch (...) */ |
| objc_begin_try_stmt (cur_try_context->try_locus, t); |
| try_exp = objc2_liteweight_finish_try_stmt (); |
| CATCH_BODY (c) = NULL_TREE; |
| append_to_statement_list (try_exp, &CATCH_BODY (c)); |
| } |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| append_to_statement_list (c, &cur_try_context->catch_list); |
| } |
| |
| /* Called after parsing a @finally clause and its associated BODY. |
| Record the body for later placement. */ |
| |
| void |
| objc_build_finally_clause (location_t finally_locus, tree body) |
| { |
| cur_try_context->finally_body = body; |
| cur_try_context->finally_locus = finally_locus; |
| cur_try_context->end_finally_locus = input_location; |
| } |
| |
| /* Called to finalize a @try construct. */ |
| |
| /* APPLE LOCAL mainline */ |
| tree |
| objc_finish_try_stmt (void) |
| { |
| struct objc_try_context *c = cur_try_context; |
| tree stmt; |
| |
| if (c->catch_list == NULL && c->finally_body == NULL) |
| error ("%<@try%> without %<@catch%> or %<@finally%>"); |
| |
| /* If we're doing Darwin setjmp exceptions, build the big nasty. */ |
| if (flag_objc_sjlj_exceptions) |
| { |
| if (!cur_try_context->finally_body) |
| { |
| cur_try_context->finally_locus = input_location; |
| cur_try_context->end_finally_locus = input_location; |
| } |
| stmt = next_sjlj_build_try_catch_finally (); |
| } |
| else |
| { |
| /* Otherwise, nest the CATCH inside a FINALLY. */ |
| stmt = c->try_body; |
| if (c->catch_list) |
| { |
| stmt = build_stmt (TRY_CATCH_EXPR, stmt, c->catch_list); |
| SET_EXPR_LOCATION (stmt, cur_try_context->try_locus); |
| } |
| if (c->finally_body) |
| { |
| stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body); |
| SET_EXPR_LOCATION (stmt, cur_try_context->try_locus); |
| } |
| } |
| add_stmt (stmt); |
| |
| cur_try_context = c->outer; |
| free (c); |
| /* APPLE LOCAL mainline */ |
| return stmt; |
| } |
| |
| /* APPLE LOCAL begin radar 2848255 */ |
| tree |
| objc2_build_throw_call (tree throw_expr) |
| { |
| tree args; |
| |
| objc_init_exceptions (); |
| |
| if (throw_expr == NULL) |
| { |
| /* If we're not inside a @catch block, there is no "current |
| exception" to be rethrown. */ |
| if (cur_try_context == NULL |
| || cur_try_context->current_catch == NULL) |
| { |
| error ("%<@throw%> (rethrow) used outside of a @catch block"); |
| return error_mark_node; |
| } |
| /* APPLE LOCAL begin radar 4957534 */ |
| if (flag_objc_zerocost_exceptions) |
| return build_function_call (objc_rethrow_exception_decl, NULL_TREE); |
| /* APPLE LOCAL end radar 4957534 */ |
| /* Otherwise the object is still sitting in the EXC_PTR_EXPR |
| value that we get from the runtime. */ |
| throw_expr = objc_build_exc_ptr (); |
| } |
| |
| /* A throw is just a call to the runtime throw function with the |
| object as a parameter. */ |
| args = tree_cons (NULL, throw_expr, NULL); |
| return build_function_call (objc_exception_throw_decl, args); |
| } |
| |
| tree objc_build_throw_stmt (tree throw_expr) |
| { |
| return add_stmt (objc2_build_throw_call (throw_expr)); |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| |
| /* APPLE LOCAL mainline */ |
| tree |
| objc_build_synchronized (location_t start_locus, tree mutex, tree body) |
| { |
| tree args, call; |
| |
| /* First lock the mutex. */ |
| mutex = save_expr (mutex); |
| args = tree_cons (NULL, mutex, NULL); |
| call = build_function_call (objc_sync_enter_decl, args); |
| SET_EXPR_LOCATION (call, start_locus); |
| add_stmt (call); |
| |
| /* Build the mutex unlock. */ |
| args = tree_cons (NULL, mutex, NULL); |
| call = build_function_call (objc_sync_exit_decl, args); |
| SET_EXPR_LOCATION (call, input_location); |
| |
| /* Put the that and the body in a TRY_FINALLY. */ |
| objc_begin_try_stmt (start_locus, body); |
| objc_build_finally_clause (input_location, call); |
| /* APPLE LOCAL mainline */ |
| return objc_finish_try_stmt (); |
| } |
| |
| |
| /* Predefine the following data type: |
| |
| struct _objc_exception_data |
| { |
| / * APPLE LOCAL mainline * / |
| int buf[JBLEN]; |
| void *pointers[4]; |
| }; */ |
| |
| /* The following yuckiness should prevent users from having to #include |
| <setjmp.h> in their code... */ |
| |
| /* APPLE LOCAL begin mainline 2006-05-24 */ |
| #ifdef TARGET_POWERPC |
| /* snarfed from /usr/include/ppc/setjmp.h */ |
| /* APPLE LOCAL radar 4404766 */ |
| #define JBLEN ((TARGET_64BIT) ? (26*2 + 18*2 + 129 + 1) : (26 + 18*2 + 129 + 1)) |
| #else |
| /* snarfed from /usr/include/i386/{setjmp,signal}.h */ |
| #define JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18)) |
| #endif |
| /* APPLE LOCAL end mainline 2006-05-24 */ |
| |
| static void |
| build_next_objc_exception_stuff (void) |
| { |
| tree field_decl, field_decl_chain, index, temp_type; |
| |
| objc_exception_data_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_EXCDATA)); |
| |
| /* APPLE LOCAL mainline 2006-05-24 */ |
| /* int buf[JBLEN]; */ |
| |
| /* APPLE LOCAL mainline 2006-05-24 */ |
| index = build_index_type (build_int_cst (NULL_TREE, JBLEN - 1)); |
| field_decl = create_field_decl (build_array_type (integer_type_node, index), |
| "buf"); |
| field_decl_chain = field_decl; |
| |
| /* void *pointers[4]; */ |
| |
| index = build_index_type (build_int_cst (NULL_TREE, 4 - 1)); |
| field_decl = create_field_decl (build_array_type (ptr_type_node, index), |
| "pointers"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_exception_data_template, field_decl_chain, NULL_TREE); |
| |
| /* int _setjmp(...); */ |
| /* If the user includes <setjmp.h>, this shall be superseded by |
| 'int _setjmp(jmp_buf);' */ |
| temp_type = build_function_type (integer_type_node, NULL_TREE); |
| objc_setjmp_decl |
| = builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| |
| /* id objc_exception_extract(struct _objc_exception_data *); */ |
| temp_type |
| = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, |
| build_pointer_type (objc_exception_data_template), |
| OBJC_VOID_AT_END)); |
| objc_exception_extract_decl |
| = builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| /* void objc_exception_try_enter(struct _objc_exception_data *); */ |
| /* void objc_exception_try_exit(struct _objc_exception_data *); */ |
| temp_type |
| = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, |
| build_pointer_type (objc_exception_data_template), |
| OBJC_VOID_AT_END)); |
| objc_exception_try_enter_decl |
| = builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| objc_exception_try_exit_decl |
| = builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| |
| /* int objc_exception_match(id, id); */ |
| temp_type |
| = build_function_type (integer_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| OBJC_VOID_AT_END))); |
| objc_exception_match_decl |
| = builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* id objc_assign_ivar (id, id, unsigned int); */ |
| /* id objc_assign_ivar_Fast (id, id, unsigned int) |
| __attribute__ ((hard_coded_address (OFFS_ASSIGNIVAR_FAST))); */ |
| temp_type |
| = build_function_type (objc_object_type, |
| tree_cons |
| (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, |
| unsigned_type_node, |
| OBJC_VOID_AT_END)))); |
| /* APPLE LOCAL begin radar 4590221 */ |
| if (OFFS_ASSIGNIVAR_FAST) |
| { |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| tree objc_assign_ivar_fast_decl; |
| objc_assign_ivar_decl |
| = builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0, |
| NOT_BUILT_IN, NULL, NULL_TREE); |
| objc_assign_ivar_fast_decl = build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST); |
| objc_assign_ivar_fast_decl |
| = build_c_cast (build_pointer_type (TREE_TYPE (objc_assign_ivar_decl)), |
| objc_assign_ivar_fast_decl); |
| objc_assign_ivar_fast_decl |
| = build_indirect_ref (objc_assign_ivar_fast_decl, "*"); |
| objc_assign_ivar_decl = objc_assign_ivar_fast_decl; |
| #else |
| objc_assign_ivar_decl |
| = builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0, |
| NOT_BUILT_IN, NULL, NULL_TREE); |
| DECL_ATTRIBUTES (objc_assign_ivar_decl) |
| = tree_cons (get_identifier ("hard_coded_address"), |
| build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST), |
| NULL_TREE); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| } |
| else |
| { |
| objc_assign_ivar_decl |
| = builtin_function (TAG_ASSIGNIVAR, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| } |
| /* APPLE LOCAL end radar 4590221 */ |
| /* id objc_assign_global (id, id *); */ |
| /* id objc_assign_strongCast (id, id *); */ |
| temp_type = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, build_pointer_type (objc_object_type), |
| OBJC_VOID_AT_END))); |
| objc_assign_global_decl |
| = builtin_function (TAG_ASSIGNGLOBAL, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| objc_assign_strong_cast_decl |
| = builtin_function (TAG_ASSIGNSTRONGCAST, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4426814 */ |
| /* id objc_assign_weak (id, id *); */ |
| objc_assign_weak_decl |
| = builtin_function (TAG_ASSIGN_WEAK, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| /* APPLE LOCAL radar 4591756 */ |
| /* id objc_read_weak (id *); */ |
| temp_type = build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, |
| build_pointer_type (objc_object_type), |
| OBJC_VOID_AT_END)); |
| /* APPLE LOCAL radar 4591756 */ |
| objc_read_weak_decl |
| = builtin_function (TAG_READ_WEAK, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE); |
| /* APPLE LOCAL end radar 4426814 */ |
| } |
| |
| static void |
| build_objc_exception_stuff (void) |
| { |
| tree noreturn_list, nothrow_list, temp_type; |
| |
| noreturn_list = tree_cons (get_identifier ("noreturn"), NULL, NULL); |
| nothrow_list = tree_cons (get_identifier ("nothrow"), NULL, NULL); |
| |
| /* void objc_exception_throw(id) __attribute__((noreturn)); */ |
| /* void objc_sync_enter(id); */ |
| /* void objc_sync_exit(id); */ |
| temp_type = build_function_type (void_type_node, |
| tree_cons (NULL_TREE, objc_object_type, |
| OBJC_VOID_AT_END)); |
| objc_exception_throw_decl |
| = builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL, |
| noreturn_list); |
| objc_sync_enter_decl |
| = builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN, |
| NULL, nothrow_list); |
| objc_sync_exit_decl |
| = builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN, |
| NULL, nothrow_list); |
| |
| /* APPLE LOCAL begin radar 2848255 */ |
| if (flag_objc_zerocost_exceptions) |
| { |
| /* void * objc_begin_catch (void *) */ |
| tree type |
| = build_function_type (ptr_type_node, |
| tree_cons (NULL_TREE, ptr_type_node, |
| OBJC_VOID_AT_END)); |
| objc2_begin_catch_decl = builtin_function ("objc_begin_catch", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (objc2_begin_catch_decl) = 0; |
| |
| /* void objc_end_catch () */ |
| type |
| = build_function_type (void_type_node, OBJC_VOID_AT_END); |
| objc2_end_catch_decl = builtin_function ("objc_end_catch", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (objc2_end_catch_decl) = 0; |
| |
| /* APPLE LOCAL begin radar 4957534 */ |
| /* void objc_exception_rethrow (void) */ |
| type |
| = build_function_type (void_type_node, OBJC_VOID_AT_END); |
| objc_rethrow_exception_decl = builtin_function ("objc_exception_rethrow", |
| type, 0, NOT_BUILT_IN, |
| NULL, NULL_TREE); |
| TREE_NOTHROW (objc_rethrow_exception_decl) = 0; |
| /* APPLE LOCAL end radar 4957534 */ |
| |
| /* APPLE LOCAL begin radar 5060975 */ |
| /* Make sure that objc_exception_throw (id) claims that it may throw an exception. */ |
| TREE_NOTHROW (objc_exception_throw_decl) = 0; |
| /* APPLE LOCAL end radar 5060975 */ |
| |
| /* build struct _objc_ehtype_t type */ |
| objc2_build_ehtype (); |
| } |
| /* APPLE LOCAL end radar 2848255 */ |
| } |
| |
| /* Construct a C struct corresponding to ObjC class CLASS, with the same |
| name as the class: |
| |
| struct <classname> { |
| struct _objc_class *isa; |
| ... |
| }; */ |
| |
| static void |
| build_private_template (tree class) |
| { |
| if (!CLASS_STATIC_TEMPLATE (class)) |
| { |
| tree record = objc_build_struct (class, |
| get_class_ivars (class, false), |
| CLASS_SUPER_NAME (class)); |
| |
| /* Set the TREE_USED bit for this struct, so that stab generator |
| can emit stabs for this struct type. */ |
| /* APPLE LOCAL begin radar 4666559 */ |
| if (flag_debug_only_used_symbols && !objc_collecting_ivars |
| && TYPE_STUB_DECL (record)) |
| /* APPLE LOCAL end radar 4666559 */ |
| TREE_USED (TYPE_STUB_DECL (record)) = 1; |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4548636 */ |
| if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) |
| objc_attach_attrs_to_type (record, class); |
| /* APPLE LOCAL end radar 4548636 */ |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| CLASS_TYPE (class) = record; |
| } |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* struct protocol_t { |
| // APPLE LOCAL radar 4695109 |
| id isa; // NULL |
| const char * const protocol_name; |
| const struct protocol_list_t * const protocol_list; |
| const struct method_list_t * const instance_methods; |
| const struct method_list_t * const class_methods; |
| // APPLE LOCAL begin radar 4695109 |
| const struct method_list_t *optionalInstanceMethods; |
| const struct method_list_t *optionalClassMethods; |
| // APPLE LOCAL end radar 4695109 |
| const struct _prop_list_t * const properties; |
| } */ |
| |
| static void |
| build_v2_protocol_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_v2_protocol_template = start_struct (RECORD_TYPE, |
| get_identifier (UTAG_V2_PROTOCOL)); |
| |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol - radar 4695109 */ |
| /* id isa; */ |
| field_decl = create_field_decl (objc_object_type, "isa"); |
| field_decl_chain = field_decl; |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol - radar 4695109 */ |
| |
| /* char *protocol_name; */ |
| field_decl = create_field_decl (string_type_node, "protocol_name"); |
| /* APPLE LOCAL radar 4533974 - ObjC new protocol */ |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct protocol_list_t * const protocol_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (objc_v2_protocol_template), |
| "protocol_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct method_list_t * const instance_methods; */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "instance_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct method_list_t * const class_methods; */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "class_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin radar 4695109 */ |
| /* const struct method_list_t * optionalInstanceMethods */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "optionalInstanceMethods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct method_list_t * optionalClassMethods */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "optionalClassMethods"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| /* struct _prop_list_t * properties; */ |
| field_decl = create_field_decl (objc_prop_list_ptr, |
| "properties"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| finish_struct (objc_v2_protocol_template, field_decl_chain, NULL_TREE); |
| |
| |
| } |
| |
| /* This routine declares all variables used to declare protocol references. */ |
| |
| static void |
| /* APPLE LOCAL radar 4695109 */ |
| /* Any reference to protocol_impl is removed */ |
| generate_v2_protocol_references (tree plist) |
| { |
| tree lproto; |
| |
| /* Forward declare protocols referenced. */ |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| { |
| tree proto = TREE_VALUE (lproto); |
| |
| if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_NAME (proto)) |
| { |
| if (! PROTOCOL_V2_FORWARD_DECL (proto)) |
| build_v2_protocol_reference (proto); |
| |
| if (PROTOCOL_LIST (proto)) |
| generate_v2_protocol_references (PROTOCOL_LIST (proto)); |
| } |
| } |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| |
| /* Begin code generation for protocols... */ |
| |
| /* struct _objc_protocol { |
| // APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions |
| struct _objc_protocol_extension *isa; |
| char *protocol_name; |
| struct _objc_protocol **protocol_list; |
| struct _objc__method_prototype_list *instance_methods; |
| struct _objc__method_prototype_list *class_methods; |
| }; */ |
| |
| static void |
| build_protocol_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_protocol_template = start_struct (RECORD_TYPE, |
| get_identifier (UTAG_PROTOCOL)); |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| /* struct _objc_protocol_extension *isa; */ |
| field_decl = create_field_decl (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_PROTOCOL_EXT))), |
| "isa"); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| field_decl_chain = field_decl; |
| |
| /* char *protocol_name; */ |
| field_decl = create_field_decl (string_type_node, "protocol_name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_protocol **protocol_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (build_pointer_type |
| (objc_protocol_template)), |
| "protocol_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* struct _objc__method_prototype_list *instance_methods; */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "instance_methods"); |
| /* APPLE LOCAL end mainline */ |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* struct _objc__method_prototype_list *class_methods; */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "class_methods"); |
| /* APPLE LOCAL end mainline */ |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_protocol_template, field_decl_chain, NULL_TREE); |
| } |
| |
| static tree |
| build_descriptor_table_initializer (tree type, tree entries) |
| { |
| tree initlist = NULL_TREE; |
| |
| do |
| { |
| tree eltlist = NULL_TREE; |
| |
| eltlist |
| = tree_cons (NULL_TREE, |
| build_selector (METHOD_SEL_NAME (entries)), NULL_TREE); |
| eltlist |
| = tree_cons (NULL_TREE, |
| add_objc_string (METHOD_ENCODING (entries), |
| meth_var_types), |
| eltlist); |
| |
| initlist |
| = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (eltlist)), |
| initlist); |
| |
| entries = TREE_CHAIN (entries); |
| } |
| while (entries); |
| |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| /* struct objc_method_prototype_list { |
| int count; |
| struct objc_method_prototype { |
| SEL name; |
| char *types; |
| } list[1]; |
| }; */ |
| |
| static tree |
| build_method_prototype_list_template (tree list_type, int size) |
| { |
| tree objc_ivar_list_record; |
| tree field_decl, field_decl_chain; |
| |
| /* Generate an unnamed struct definition. */ |
| |
| objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* int method_count; */ |
| field_decl = create_field_decl (integer_type_node, "method_count"); |
| field_decl_chain = field_decl; |
| |
| /* struct objc_method method_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "method_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_list_record; |
| } |
| |
| static tree |
| build_method_prototype_template (void) |
| { |
| tree proto_record; |
| tree field_decl, field_decl_chain; |
| |
| proto_record |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD_PROTOTYPE)); |
| |
| /* SEL _cmd; */ |
| field_decl = create_field_decl (objc_selector_type, "_cmd"); |
| field_decl_chain = field_decl; |
| |
| /* char *method_types; */ |
| field_decl = create_field_decl (string_type_node, "method_types"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (proto_record, field_decl_chain, NULL_TREE); |
| |
| return proto_record; |
| } |
| |
| static tree |
| objc_method_parm_type (tree type) |
| { |
| type = TREE_VALUE (TREE_TYPE (type)); |
| if (TREE_CODE (type) == TYPE_DECL) |
| type = TREE_TYPE (type); |
| /* APPLE LOCAL mainline */ |
| return type; |
| } |
| |
| static int |
| objc_encoded_type_size (tree type) |
| { |
| int sz = int_size_in_bytes (type); |
| |
| /* Make all integer and enum types at least as large |
| as an int. */ |
| if (sz > 0 && INTEGRAL_TYPE_P (type)) |
| sz = MAX (sz, int_size_in_bytes (integer_type_node)); |
| /* Treat arrays as pointers, since that's how they're |
| passed in. */ |
| else if (TREE_CODE (type) == ARRAY_TYPE) |
| sz = int_size_in_bytes (ptr_type_node); |
| return sz; |
| } |
| |
| static tree |
| encode_method_prototype (tree method_decl) |
| { |
| tree parms; |
| int parm_offset, i; |
| char buf[40]; |
| tree result; |
| |
| /* ONEWAY and BYCOPY, for remote object are the only method qualifiers. */ |
| encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (method_decl))); |
| |
| /* Encode return type. */ |
| encode_type (objc_method_parm_type (method_decl), |
| obstack_object_size (&util_obstack), |
| OBJC_ENCODE_INLINE_DEFS); |
| |
| /* Stack size. */ |
| /* The first two arguments (self and _cmd) are pointers; account for |
| their size. */ |
| i = int_size_in_bytes (ptr_type_node); |
| parm_offset = 2 * i; |
| for (parms = METHOD_SEL_ARGS (method_decl); parms; |
| parms = TREE_CHAIN (parms)) |
| { |
| tree type = objc_method_parm_type (parms); |
| int sz = objc_encoded_type_size (type); |
| |
| /* If a type size is not known, bail out. */ |
| if (sz < 0) |
| { |
| error ("%Jtype '%D' does not have a known size", |
| type, type); |
| /* Pretend that the encoding succeeded; the compilation will |
| fail nevertheless. */ |
| goto finish_encoding; |
| } |
| parm_offset += sz; |
| } |
| |
| sprintf (buf, "%d@0:%d", parm_offset, i); |
| obstack_grow (&util_obstack, buf, strlen (buf)); |
| |
| /* Argument types. */ |
| parm_offset = 2 * i; |
| for (parms = METHOD_SEL_ARGS (method_decl); parms; |
| parms = TREE_CHAIN (parms)) |
| { |
| tree type = objc_method_parm_type (parms); |
| |
| /* Process argument qualifiers for user supplied arguments. */ |
| encode_type_qualifiers (TREE_PURPOSE (TREE_TYPE (parms))); |
| |
| /* Type. */ |
| encode_type (type, obstack_object_size (&util_obstack), |
| OBJC_ENCODE_INLINE_DEFS); |
| |
| /* Compute offset. */ |
| sprintf (buf, "%d", parm_offset); |
| parm_offset += objc_encoded_type_size (type); |
| |
| obstack_grow (&util_obstack, buf, strlen (buf)); |
| } |
| |
| finish_encoding: |
| obstack_1grow (&util_obstack, '\0'); |
| result = get_identifier (obstack_finish (&util_obstack)); |
| obstack_free (&util_obstack, util_firstobj); |
| return result; |
| } |
| |
| static tree |
| generate_descriptor_table (tree type, const char *name, int size, tree list, |
| /* APPLE LOCAL ObjC new abi */ |
| tree proto, bool newabi) |
| { |
| tree decl, initlist; |
| |
| decl = start_var_decl (type, synth_id_with_class_suffix (name, proto)); |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (newabi) |
| { |
| int entsize; |
| entsize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)); |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, entsize)); |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); |
| } |
| else |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); |
| /* APPLE LOCAL end ObjC new abi */ |
| initlist = tree_cons (NULL_TREE, list, initlist); |
| |
| finish_var_decl (decl, objc_build_constructor (type, nreverse (initlist))); |
| |
| return decl; |
| } |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| static void |
| generate_method_descriptors (tree protocol, bool is_optional) |
| { |
| tree initlist, chain, method_list_template; |
| int size; |
| |
| if (!objc_method_prototype_template) |
| objc_method_prototype_template = build_method_prototype_template (); |
| |
| chain = is_optional ? PROTOCOL_OPTIONAL_CLS_METHODS (protocol) |
| : PROTOCOL_CLS_METHODS (protocol); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_method_prototype_list_template (objc_method_prototype_template, |
| size); |
| |
| initlist |
| = build_descriptor_table_initializer (objc_method_prototype_template, |
| chain); |
| |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| /* APPLE LOCAL radar 4695109 */ |
| "_OBJC_PROTOCOL_CLASS_METHODS_OPT", |
| /* APPLE LOCAL ObjC new abi */ |
| size, initlist, protocol, false); |
| else |
| UOBJC_CLASS_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_PROTOCOL_CLASS_METHODS", |
| /* APPLE LOCAL ObjC new abi */ |
| size, initlist, protocol, false); |
| } |
| else |
| { |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl = 0; |
| else |
| UOBJC_CLASS_METHODS_decl = 0; |
| } |
| |
| chain = is_optional ? PROTOCOL_OPTIONAL_NST_METHODS (protocol) |
| : PROTOCOL_NST_METHODS (protocol); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_method_prototype_list_template (objc_method_prototype_template, |
| size); |
| initlist |
| = build_descriptor_table_initializer (objc_method_prototype_template, |
| chain); |
| |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| /* APPLE LOCAL radar 4695109 */ |
| "_OBJC_PROTOCOL_INSTANCE_METHODS_OPT", |
| /* APPLE LOCAL ObjC new abi */ |
| size, initlist, protocol, false); |
| else |
| UOBJC_INSTANCE_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_PROTOCOL_INSTANCE_METHODS", |
| /* APPLE LOCAL ObjC new abi */ |
| size, initlist, protocol, false); |
| } |
| else |
| { |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl = 0; |
| else |
| UOBJC_INSTANCE_METHODS_decl = 0; |
| } |
| } |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| static void |
| generate_protocol_references (tree plist) |
| { |
| tree lproto; |
| |
| /* Forward declare protocols referenced. */ |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| { |
| tree proto = TREE_VALUE (lproto); |
| |
| if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_NAME (proto)) |
| { |
| if (! PROTOCOL_FORWARD_DECL (proto)) |
| build_protocol_reference (proto); |
| |
| if (PROTOCOL_LIST (proto)) |
| generate_protocol_references (PROTOCOL_LIST (proto)); |
| } |
| } |
| } |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Generate either '- .cxx_construct' or '- .cxx_destruct' for the |
| current class. */ |
| #ifdef OBJCPLUS |
| static void |
| objc_generate_cxx_ctor_or_dtor (bool dtor) |
| { |
| tree fn, body, compound_stmt, ivar; |
| |
| /* - (id) .cxx_construct { ... return self; } */ |
| /* - (void) .cxx_construct { ... } */ |
| |
| objc_set_method_type (MINUS_EXPR); |
| objc_start_method_definition |
| (objc_build_method_signature (build_tree_list (NULL_TREE, |
| dtor |
| ? void_type_node |
| : objc_object_type), |
| get_identifier (dtor |
| ? TAG_CXX_DESTRUCT |
| : TAG_CXX_CONSTRUCT), |
| /* APPLE LOCAL radar 3803157 - objc attribute */ |
| make_node (TREE_LIST)), NULL_TREE); |
| body = begin_function_body (); |
| compound_stmt = begin_compound_stmt (0); |
| |
| ivar = CLASS_IVARS (implementation_template); |
| /* Destroy ivars in reverse order. */ |
| if (dtor) |
| ivar = nreverse (copy_list (ivar)); |
| |
| for (; ivar; ivar = TREE_CHAIN (ivar)) |
| { |
| if (TREE_CODE (ivar) == FIELD_DECL) |
| { |
| tree type = TREE_TYPE (ivar); |
| |
| /* Call the ivar's default constructor or destructor. Do not |
| call the destructor unless a corresponding constructor call |
| has also been made (or is not needed). */ |
| if (IS_AGGR_TYPE (type) |
| && (dtor |
| ? (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) |
| && (!TYPE_NEEDS_CONSTRUCTING (type) |
| || TYPE_HAS_DEFAULT_CONSTRUCTOR (type))) |
| : (TYPE_NEEDS_CONSTRUCTING (type) |
| && TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))) |
| finish_expr_stmt |
| (build_special_member_call |
| (build_ivar_reference (DECL_NAME (ivar)), |
| dtor ? complete_dtor_identifier : complete_ctor_identifier, |
| NULL_TREE, type, LOOKUP_NORMAL)); |
| } |
| } |
| |
| /* The constructor returns 'self'. */ |
| if (!dtor) |
| finish_return_stmt (self_decl); |
| |
| finish_compound_stmt (compound_stmt); |
| finish_function_body (body); |
| fn = current_function_decl; |
| finish_function (); |
| objc_finish_method_definition (fn); |
| } |
| |
| /* The following routine will examine the current @interface for any |
| non-POD C++ ivars requiring non-trivial construction and/or |
| destruction, and then synthesize special '- .cxx_construct' and/or |
| '- .cxx_destruct' methods which will run the appropriate |
| construction or destruction code. Note that ivars inherited from |
| super-classes are _not_ considered. */ |
| static void |
| objc_generate_cxx_cdtors (void) |
| { |
| bool need_ctor = false, need_dtor = false; |
| tree ivar; |
| |
| /* APPLE LOCAL begin radar 4407151 */ |
| /* Error case, due to possibly an extra @end. */ |
| if (!objc_implementation_context) |
| return; |
| /* APPLE LOCAL end radar 4407151 */ |
| |
| /* We do not want to do this for categories, since they do not have |
| their own ivars. */ |
| |
| if (TREE_CODE (objc_implementation_context) != CLASS_IMPLEMENTATION_TYPE) |
| return; |
| |
| /* First, determine if we even need a constructor and/or destructor. */ |
| |
| for (ivar = CLASS_IVARS (implementation_template); ivar; |
| ivar = TREE_CHAIN (ivar)) |
| { |
| if (TREE_CODE (ivar) == FIELD_DECL) |
| { |
| tree type = TREE_TYPE (ivar); |
| |
| if (IS_AGGR_TYPE (type)) |
| { |
| if (TYPE_NEEDS_CONSTRUCTING (type) |
| && TYPE_HAS_DEFAULT_CONSTRUCTOR (type)) |
| /* NB: If a default constructor is not available, we will not |
| be able to initialize this ivar; the add_instance_variable() |
| routine will already have warned about this. */ |
| need_ctor = true; |
| |
| if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) |
| && (!TYPE_NEEDS_CONSTRUCTING (type) |
| || TYPE_HAS_DEFAULT_CONSTRUCTOR (type))) |
| /* NB: If a default constructor is not available, we will not |
| call the destructor either, for symmetry. */ |
| need_dtor = true; |
| } |
| } |
| } |
| |
| /* Generate '- .cxx_construct' if needed. */ |
| |
| if (need_ctor) |
| objc_generate_cxx_ctor_or_dtor (false); |
| |
| /* Generate '- .cxx_destruct' if needed. */ |
| |
| if (need_dtor) |
| objc_generate_cxx_ctor_or_dtor (true); |
| |
| /* The 'imp_list' variable points at an imp_entry record for the current |
| @implementation. Record the existence of '- .cxx_construct' and/or |
| '- .cxx_destruct' methods therein; it will be included in the |
| metadata for the class. */ |
| if (flag_next_runtime) |
| imp_list->has_cxx_cdtors = (need_ctor || need_dtor); |
| } |
| #endif |
| /* APPLE LOCAL end mainline */ |
| |
| /* For each protocol which was referenced either from a @protocol() |
| expression, or because a class/category implements it (then a |
| pointer to the protocol is stored in the struct describing the |
| class/category), we create a statically allocated instance of the |
| Protocol class. The code is written in such a way as to generate |
| as few Protocol objects as possible; we generate a unique Protocol |
| instance for each protocol, and we don't generate a Protocol |
| instance if the protocol is never referenced (either from a |
| @protocol() or from a class/category implementation). These |
| statically allocated objects can be referred to via the static |
| (that is, private to this module) symbols _OBJC_PROTOCOL_n. |
| |
| The statically allocated Protocol objects that we generate here |
| need to be fixed up at runtime in order to be used: the 'isa' |
| pointer of the objects need to be set up to point to the 'Protocol' |
| class, as known at runtime. |
| |
| The NeXT runtime fixes up all protocols at program startup time, |
| before main() is entered. It uses a low-level trick to look up all |
| those symbols, then loops on them and fixes them up. |
| |
| The GNU runtime as well fixes up all protocols before user code |
| from the module is executed; it requires pointers to those symbols |
| to be put in the objc_symtab (which is then passed as argument to |
| the function __objc_exec_class() which the compiler sets up to be |
| executed automatically when the module is loaded); setup of those |
| Protocol objects happen in two ways in the GNU runtime: all |
| Protocol objects referred to by a class or category implementation |
| are fixed up when the class/category is loaded; all Protocol |
| objects referred to by a @protocol() expression are added by the |
| compiler to the list of statically allocated instances to fixup |
| (the same list holding the statically allocated constant string |
| objects). Because, as explained above, the compiler generates as |
| few Protocol objects as possible, some Protocol object might end up |
| being referenced multiple times when compiled with the GNU runtime, |
| and end up being fixed up multiple times at runtime initialization. |
| But that doesn't hurt, it's just a little inefficient. */ |
| |
| static void |
| generate_protocols (void) |
| { |
| tree p, encoding; |
| tree decl; |
| tree initlist, protocol_name_expr, refs_decl, refs_expr; |
| |
| /* If a protocol was directly referenced, pull in indirect references. */ |
| for (p = protocol_chain; p; p = TREE_CHAIN (p)) |
| if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p)) |
| generate_protocol_references (PROTOCOL_LIST (p)); |
| |
| for (p = protocol_chain; p; p = TREE_CHAIN (p)) |
| { |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| tree save_objc_implementation_context; |
| tree nst_methods = PROTOCOL_NST_METHODS (p); |
| tree cls_methods = PROTOCOL_CLS_METHODS (p); |
| |
| /* If protocol wasn't referenced, don't generate any code. */ |
| decl = PROTOCOL_FORWARD_DECL (p); |
| |
| if (!decl) |
| continue; |
| |
| /* Make sure we link in the Protocol class. */ |
| add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); |
| |
| while (nst_methods) |
| { |
| if (! METHOD_ENCODING (nst_methods)) |
| { |
| encoding = encode_method_prototype (nst_methods); |
| METHOD_ENCODING (nst_methods) = encoding; |
| } |
| nst_methods = TREE_CHAIN (nst_methods); |
| } |
| |
| while (cls_methods) |
| { |
| if (! METHOD_ENCODING (cls_methods)) |
| { |
| encoding = encode_method_prototype (cls_methods); |
| METHOD_ENCODING (cls_methods) = encoding; |
| } |
| |
| cls_methods = TREE_CHAIN (cls_methods); |
| } |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| generate_method_descriptors (p, false); |
| |
| if (PROTOCOL_LIST (p)) |
| refs_decl = generate_protocol_list (p); |
| else |
| refs_decl = 0; |
| |
| /* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */ |
| protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names); |
| |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| if (refs_decl) |
| refs_expr = |
| convert (build_pointer_type (build_pointer_type (objc_protocol_template)), |
| build_unary_op (ADDR_EXPR, refs_decl, 0)); |
| else |
| refs_expr = |
| convert (build_pointer_type (build_pointer_type (objc_protocol_template)), |
| build_int_cst (NULL_TREE, 0)); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| save_objc_implementation_context = objc_implementation_context; |
| objc_implementation_context = p; |
| generate_v2_property_tables (p); |
| objc_implementation_context = save_objc_implementation_context; |
| |
| nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p); |
| cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p); |
| while (nst_methods) |
| { |
| if (! METHOD_ENCODING (nst_methods)) |
| { |
| encoding = encode_method_prototype (nst_methods); |
| METHOD_ENCODING (nst_methods) = encoding; |
| } |
| nst_methods = TREE_CHAIN (nst_methods); |
| } |
| while (cls_methods) |
| { |
| if (! METHOD_ENCODING (cls_methods)) |
| { |
| encoding = encode_method_prototype (cls_methods); |
| METHOD_ENCODING (cls_methods) = encoding; |
| } |
| |
| cls_methods = TREE_CHAIN (cls_methods); |
| } |
| generate_method_descriptors (p, true); |
| UOBJC_PROTOCOL_EXT_decl = generate_objc_protocol_extension (p, |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl, |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl, |
| UOBJC_V2_PROPERTY_decl); |
| |
| /* UOBJC_INSTANCE_METHODS_decl/UOBJC_CLASS_METHODS_decl are set |
| by generate_method_descriptors, which is called above. */ |
| initlist = build_protocol_initializer (TREE_TYPE (decl), |
| protocol_name_expr, refs_expr, |
| UOBJC_INSTANCE_METHODS_decl, |
| /* APPLE LOCAL ObjC new abi */ |
| UOBJC_CLASS_METHODS_decl, false, NULL_TREE, |
| /* APPLE LOCAL radar 4695109 */ |
| UOBJC_PROTOCOL_EXT_decl, NULL_TREE); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| /* APPLE LOCAL begin LLVM */ |
| /* Force 4 byte alignment for protocols */ |
| DECL_ALIGN(decl) = 32; |
| DECL_USER_ALIGN(decl) = 1; |
| /* APPLE LOCAL end LLVM */ |
| finish_var_decl (decl, initlist); |
| } |
| } |
| |
| static tree |
| build_protocol_initializer (tree type, tree protocol_name, |
| tree protocol_list, tree instance_methods, |
| /* APPLE LOCAL ObjC new abi */ |
| tree class_methods, bool newabi, tree property_list, |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions - radar 4695109 */ |
| tree objc_protocol_or_opt_ins_meth, tree opt_cls_meth) |
| { |
| tree initlist = NULL_TREE, expr; |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ |
| /* APPLE LOCAL begin radar 4533974 - ObjC newprotocol - radar 4695109 */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| if (newabi) |
| /* 'isa' is NULL in the new ObjC abi */ |
| expr = convert (objc_object_type, build_int_cst (NULL_TREE, 0)); |
| /* APPLE LOCAL end radar 4533974 - ObjC newprotocol - radar 4695109 */ |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| /* "isa" field now points to struct _objc_protocol_extension * */ |
| else |
| { |
| if (!objc_protocol_or_opt_ins_meth) |
| { |
| if (!objc_protocol_extension_template) |
| build_objc_protocol_extension_template (); |
| |
| expr = |
| convert (build_pointer_type (objc_protocol_extension_template), |
| build_int_cst (NULL_TREE, 0)); |
| } |
| else |
| expr = convert (build_pointer_type (objc_protocol_extension_template), |
| build_unary_op (ADDR_EXPR, |
| objc_protocol_or_opt_ins_meth, 0)); |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ |
| /* APPLE LOCAL end ObjC new abi */ |
| initlist = tree_cons (NULL_TREE, protocol_name, initlist); |
| initlist = tree_cons (NULL_TREE, protocol_list, initlist); |
| |
| if (!instance_methods) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_proto_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_method_proto_list_ptr, |
| build_unary_op (ADDR_EXPR, instance_methods, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| if (!class_methods) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_proto_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_method_proto_list_ptr, |
| build_unary_op (ADDR_EXPR, class_methods, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| if (newabi) |
| { |
| /* APPLE LOCAL begin radar 4695109 */ |
| if (!objc_protocol_or_opt_ins_meth) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_proto_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_method_proto_list_ptr, |
| build_unary_op (ADDR_EXPR, objc_protocol_or_opt_ins_meth, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| if (!opt_cls_meth) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_proto_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_method_proto_list_ptr, |
| build_unary_op (ADDR_EXPR, opt_cls_meth, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* APPLE LOCAL end radar 4695109 */ |
| if (!property_list) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_prop_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_prop_list_ptr, |
| build_unary_op (ADDR_EXPR, property_list, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* struct _objc_category { |
| char *category_name; |
| char *class_name; |
| struct _objc_method_list *instance_methods; |
| struct _objc_method_list *class_methods; |
| struct _objc_protocol_list *protocols; |
| // APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions |
| uint32_t size; // sizeof (struct _objc_category) |
| struct _objc_property_list *instance_properties; // category's own @property decl. |
| // APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions |
| }; */ |
| |
| static void |
| build_category_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_category_template = start_struct (RECORD_TYPE, |
| get_identifier (UTAG_CATEGORY)); |
| |
| /* char *category_name; */ |
| field_decl = create_field_decl (string_type_node, "category_name"); |
| field_decl_chain = field_decl; |
| |
| /* char *class_name; */ |
| field_decl = create_field_decl (string_type_node, "class_name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_method_list *instance_methods; */ |
| /* APPLE LOCAL mainline */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "instance_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_method_list *class_methods; */ |
| /* APPLE LOCAL mainline */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "class_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_protocol **protocol_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (build_pointer_type |
| (objc_protocol_template)), |
| "protocol_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| /* uint32_t size; - sizeof (struct _objc_category) */ |
| field_decl = create_field_decl (integer_type_node, "size"); |
| chainon (field_decl_chain, field_decl); |
| /* struct _objc_property_list *instance_properties; This field describes |
| the category's @property declarations. Properties from inherited protocols |
| are not included. */ |
| field_decl = create_field_decl (build_pointer_type ( |
| xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_PROPERTY_LIST))), |
| "instance_properties"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| finish_struct (objc_category_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* struct _objc_selector { |
| SEL sel_id; |
| char *sel_type; |
| }; */ |
| |
| static void |
| build_selector_template (void) |
| { |
| |
| tree field_decl, field_decl_chain; |
| |
| objc_selector_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_SELECTOR)); |
| |
| /* SEL sel_id; */ |
| field_decl = create_field_decl (objc_selector_type, "sel_id"); |
| field_decl_chain = field_decl; |
| |
| /* char *sel_type; */ |
| field_decl = create_field_decl (string_type_node, "sel_type"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_selector_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* Build type for a category: |
| struct category_t { |
| const char * const name; |
| struct class_t *const cls; |
| const struct method_list_t * const instance_methods; |
| const struct method_list_t * const class_methods; |
| const struct protocol_list_t * const protocols; |
| const struct _prop_list_t * const properties; |
| } */ |
| |
| static void |
| build_v2_category_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_v2_category_template = start_struct (RECORD_TYPE, |
| get_identifier ("_category_t")); |
| |
| /* char *name; */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| field_decl_chain = field_decl; |
| |
| /* struct class_t *const cls; */ |
| field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), |
| "cls"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct method_list_t *instance_methods; */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "instance_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct method_list_t *class_methods; */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "class_methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct protocol_list_t *protocol_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (objc_v2_protocol_template), |
| "protocol_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| /* struct _prop_list_t * properties; */ |
| field_decl = create_field_decl (objc_prop_list_ptr, |
| "properties"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| finish_struct (objc_v2_category_template, field_decl_chain, NULL_TREE); |
| } |
| |
| |
| /* Build following types which represent each class implemenation. |
| |
| struct class_t { |
| struct class_t *isa; |
| // APPLE LOCAL radar 4705214 |
| struct class_t * const superclass; |
| __strong void *cache; |
| __strong IMP *vtable; |
| // APPLE LOCAL radar 4705214 |
| __strong struct class_ro_t *ro; |
| }; |
| |
| struct class_ro_t { |
| uint32_t const flags; |
| uint32_t const instanceStart; |
| uint32_t const instanceSize; |
| #ifdef __LP64__ |
| uint32_t const reserved; |
| #endif |
| const uint8_t * const ivarLayout; |
| // APPLE LOCAL radar 4705214 |
| // - Moved to: 'struct class_t' struct class_t * const superclass; |
| |
| const char *const name; |
| const struct method_list_t * const baseMethods; |
| const struct objc_protocol_list *const baseProtocols; |
| const struct ivar_list_t *const ivars; |
| // APPLE LOCAL radar 4695101 |
| const uint8_t * const weakIvarLayout; |
| const struct _prop_list_t * const properties; |
| }; */ |
| |
| static void |
| build_v2_class_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_v2_class_ro_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_V2_CLASS_RO)); |
| |
| objc_v2_class_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_V2_CLASS)); |
| |
| /* struct class_t *isa; */ |
| field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), |
| "isa"); |
| field_decl_chain = field_decl; |
| |
| /* struct class_t * const superclass */ |
| field_decl = create_field_decl (build_pointer_type (objc_v2_class_template), |
| "superclass"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* __strong void *cache; */ |
| /* TODO: __strong is missing. */ |
| field_decl = create_field_decl (build_pointer_type (void_type_node), |
| "cache"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* __strong IMP *vtable; */ |
| /* TODO: __strong is missing. */ |
| field_decl = create_field_decl (build_pointer_type (objc_imp_type), |
| "vtable"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* __strong struct class_ro_t *ro; */ |
| /* TODO: __strong is missing. */ |
| field_decl = create_field_decl (build_pointer_type (objc_v2_class_ro_template), |
| "ro"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_v2_class_template, field_decl_chain, NULL_TREE); |
| |
| /* struct class_ro_t {...} */ |
| |
| /* uint32_t const flags; */ |
| field_decl = create_field_decl (integer_type_node, "flags"); |
| field_decl_chain = field_decl; |
| |
| /* uint32_t const instanceStart */ |
| field_decl = create_field_decl (integer_type_node, "instanceStart"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* uint32_t const instanceSize */ |
| field_decl = create_field_decl (integer_type_node, "instanceSize"); |
| chainon (field_decl_chain, field_decl); |
| |
| if (TARGET_64BIT) |
| { |
| /* uint32_t const reserved */ |
| field_decl = create_field_decl (integer_type_node, "reserved"); |
| chainon (field_decl_chain, field_decl); |
| } |
| |
| /* const uint8_t * const ivarLayout */ |
| /* APPLE LOCAL 4695101 */ |
| field_decl = create_field_decl (string_type_node, |
| "ivarLayout"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const char *const name; */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct method_list_t * const baseMethods */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "baseMethods"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct objc_protocol_list *const baseProtocols */ |
| field_decl = create_field_decl (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier |
| (UTAG_V2_PROTOCOL_LIST))), |
| "baseProtocols"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* const struct ivar_list_t *const ivars */ |
| field_decl = create_field_decl (objc_v2_ivar_list_ptr, |
| "ivars"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin radar 4695101 */ |
| /* const uint8_t * const weakIvarLayout; */ |
| field_decl = create_field_decl (string_type_node, "weakIvarLayout"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end radar 4695101 */ |
| |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| /* struct _prop_list_t * properties */ |
| field_decl = create_field_decl (objc_prop_list_ptr, |
| "properties"); |
| chainon (field_decl_chain, field_decl); |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| finish_struct (objc_v2_class_ro_template, field_decl_chain, NULL_TREE); |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* struct _objc_class { |
| struct _objc_class *isa; |
| struct _objc_class *super_class; |
| char *name; |
| long version; |
| long info; |
| long instance_size; |
| struct _objc_ivar_list *ivars; |
| struct _objc_method_list *methods; |
| #ifdef __NEXT_RUNTIME__ |
| struct objc_cache *cache; |
| #else |
| struct sarray *dtable; |
| struct _objc_class *subclass_list; |
| struct _objc_class *sibling_class; |
| #endif |
| struct _objc_protocol_list *protocols; |
| // APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions |
| #ifdef __NEXT_RUNTIME__ |
| const char *ivar_layout; |
| struct _objc_class_ext *ext; |
| #else |
| void *gc_object_type; |
| #endif |
| // APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions |
| }; */ |
| |
| /* NB: The 'sel_id' and 'gc_object_type' fields are not being used by |
| the NeXT/Apple runtime; still, the compiler must generate them to |
| maintain backward binary compatibility (and to allow for future |
| expansion). */ |
| |
| static void |
| build_class_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_class_template |
| = start_struct (RECORD_TYPE, get_identifier (UTAG_CLASS)); |
| |
| /* struct _objc_class *isa; */ |
| field_decl = create_field_decl (build_pointer_type (objc_class_template), |
| "isa"); |
| field_decl_chain = field_decl; |
| |
| /* struct _objc_class *super_class; */ |
| field_decl = create_field_decl (build_pointer_type (objc_class_template), |
| "super_class"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* char *name; */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* long version; */ |
| field_decl = create_field_decl (long_integer_type_node, "version"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* long info; */ |
| field_decl = create_field_decl (long_integer_type_node, "info"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* long instance_size; */ |
| field_decl = create_field_decl (long_integer_type_node, "instance_size"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_ivar_list *ivars; */ |
| /* APPLE LOCAL mainline */ |
| field_decl = create_field_decl (objc_ivar_list_ptr, |
| "ivars"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_method_list *methods; */ |
| /* APPLE LOCAL mainline */ |
| field_decl = create_field_decl (objc_method_list_ptr, |
| "methods"); |
| chainon (field_decl_chain, field_decl); |
| |
| if (flag_next_runtime) |
| { |
| /* struct objc_cache *cache; */ |
| field_decl = create_field_decl (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier |
| ("objc_cache"))), |
| "cache"); |
| chainon (field_decl_chain, field_decl); |
| } |
| else |
| { |
| /* struct sarray *dtable; */ |
| field_decl = create_field_decl (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier |
| ("sarray"))), |
| "dtable"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_class *subclass_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (objc_class_template), |
| "subclass_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_class *sibling_class; */ |
| field_decl = create_field_decl (build_pointer_type |
| (objc_class_template), |
| "sibling_class"); |
| chainon (field_decl_chain, field_decl); |
| } |
| |
| /* struct _objc_protocol **protocol_list; */ |
| field_decl = create_field_decl (build_pointer_type |
| (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier |
| (UTAG_PROTOCOL)))), |
| "protocol_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| if (flag_next_runtime) |
| { |
| /* const char *ivar_layout; */ |
| field_decl = create_field_decl (string_type_node, "ivar_layout"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct _objc_class_ext *ext; */ |
| field_decl = create_field_decl (build_pointer_type ( |
| xref_tag (RECORD_TYPE, |
| get_identifier |
| (UTAG_CLASS_EXT))), |
| "ext"); |
| chainon (field_decl_chain, field_decl); |
| } |
| else |
| { |
| /* void *gc_object_type; */ |
| field_decl = create_field_decl (build_pointer_type (void_type_node), |
| "gc_object_type"); |
| chainon (field_decl_chain, field_decl); |
| } |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| finish_struct (objc_class_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* Generate appropriate forward declarations for an implementation. */ |
| |
| static void |
| synth_forward_declarations (void) |
| { |
| tree an_id; |
| |
| /* static struct objc_class _OBJC_CLASS_<my_name>; */ |
| UOBJC_CLASS_decl = build_metadata_decl ("_OBJC_CLASS", |
| objc_class_template); |
| |
| /* static struct objc_class _OBJC_METACLASS_<my_name>; */ |
| UOBJC_METACLASS_decl = build_metadata_decl ("_OBJC_METACLASS", |
| objc_class_template); |
| |
| /* Pre-build the following entities - for speed/convenience. */ |
| |
| an_id = get_identifier ("super_class"); |
| /* APPLE LOCAL begin mainline */ |
| ucls_super_ref = objc_build_component_ref (UOBJC_CLASS_decl, an_id); |
| uucls_super_ref = objc_build_component_ref (UOBJC_METACLASS_decl, an_id); |
| } |
| /* APPLE LOCAL end mainline */ |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| /* Generate appropriate forward declarations for an implementation. */ |
| |
| static void |
| synth_v2_forward_declarations (void) |
| { |
| /* struct class_t OBJC_CLASS_$_<my_name>; */ |
| UOBJC_V2_CLASS_decl = build_metadata_decl ("OBJC_CLASS_$", |
| objc_v2_class_template); |
| |
| /* struct class_t OBJC_METACLASS_$_<my_name>; */ |
| UOBJC_V2_METACLASS_decl = build_metadata_decl ("OBJC_METACLASS_$", |
| objc_v2_class_template); |
| } |
| |
| static void |
| /* APPLE LOCAL end ObjC abi v2 */ |
| error_with_ivar (const char *message, tree decl) |
| { |
| error ("%J%s %qs", decl, |
| message, gen_declaration (decl)); |
| |
| } |
| |
| static void |
| check_ivars (tree inter, tree imp) |
| { |
| tree intdecls = CLASS_RAW_IVARS (inter); |
| tree impdecls = CLASS_RAW_IVARS (imp); |
| |
| while (1) |
| { |
| tree t1, t2; |
| |
| #ifdef OBJCPLUS |
| if (intdecls && TREE_CODE (intdecls) == TYPE_DECL) |
| intdecls = TREE_CHAIN (intdecls); |
| #endif |
| if (intdecls == 0 && impdecls == 0) |
| break; |
| if (intdecls == 0 || impdecls == 0) |
| { |
| error ("inconsistent instance variable specification"); |
| break; |
| } |
| |
| t1 = TREE_TYPE (intdecls); t2 = TREE_TYPE (impdecls); |
| |
| if (!comptypes (t1, t2) |
| || !tree_int_cst_equal (DECL_INITIAL (intdecls), |
| DECL_INITIAL (impdecls))) |
| { |
| if (DECL_NAME (intdecls) == DECL_NAME (impdecls)) |
| { |
| error_with_ivar ("conflicting instance variable type", |
| impdecls); |
| error_with_ivar ("previous declaration of", |
| intdecls); |
| } |
| else /* both the type and the name don't match */ |
| { |
| error ("inconsistent instance variable specification"); |
| break; |
| } |
| } |
| |
| else if (DECL_NAME (intdecls) != DECL_NAME (impdecls)) |
| { |
| error_with_ivar ("conflicting instance variable name", |
| impdecls); |
| error_with_ivar ("previous declaration of", |
| intdecls); |
| } |
| |
| intdecls = TREE_CHAIN (intdecls); |
| impdecls = TREE_CHAIN (impdecls); |
| } |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* Set 'objc_v2_message_ref_template' to the data type node for 'struct _message_ref_t'. |
| This needs to be done just once per compilation. Also Set |
| 'objc_v2_super_message_ref_template' to data type node |
| for 'struct _super_message_ref_t'. |
| |
| struct _message_ref_t { |
| IMP messenger; |
| SEL name; |
| }; |
| where IMP is: id (*) (id, _message_ref_t*, ...) |
| |
| struct _super_message_ref_t { |
| SUPER_IMP messenger; |
| SEL name; |
| }; |
| where SUPER_IMP is: id (*) ( super_t*, _super_message_ref_t*, ...) */ |
| |
| static void |
| build_message_ref_template (void) |
| { |
| tree ptr_message_ref_t; |
| tree field_decl, field_decl_chain; |
| /* struct _message_ref_t {...} */ |
| objc_v2_message_ref_template = start_struct (RECORD_TYPE, |
| get_identifier ("_message_ref_t")); |
| |
| /* IMP messenger; */ |
| ptr_message_ref_t = build_pointer_type (xref_tag ( |
| RECORD_TYPE, get_identifier ("_message_ref_t"))); |
| objc_v2_imp_type |
| = build_pointer_type |
| (build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_object_type, |
| tree_cons (NULL_TREE, ptr_message_ref_t, |
| NULL_TREE)))); |
| field_decl = create_field_decl (objc_v2_imp_type, "messenger"); |
| field_decl_chain = field_decl; |
| |
| /* SEL name; */ |
| field_decl = create_field_decl (objc_selector_type, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_v2_message_ref_template, field_decl_chain, NULL_TREE); |
| objc_v2_selector_type = build_pointer_type (objc_v2_message_ref_template); |
| |
| /* struct _super_message_ref_t {...} */ |
| objc_v2_super_message_ref_template = start_struct (RECORD_TYPE, |
| get_identifier ("_super_message_ref_t")); |
| |
| /* SUPER_IMP messenger; */ |
| ptr_message_ref_t = build_pointer_type (xref_tag ( |
| RECORD_TYPE, get_identifier ("_super_message_ref_t"))); |
| |
| objc_v2_super_imp_type |
| = build_pointer_type |
| (build_function_type (objc_object_type, |
| tree_cons (NULL_TREE, objc_super_type, |
| tree_cons (NULL_TREE, ptr_message_ref_t, |
| NULL_TREE)))); |
| field_decl = create_field_decl (objc_v2_super_imp_type, "messenger"); |
| field_decl_chain = field_decl; |
| |
| /* SEL name; */ |
| field_decl = create_field_decl (objc_selector_type, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_v2_super_message_ref_template, field_decl_chain, NULL_TREE); |
| objc_v2_super_selector_type = build_pointer_type (objc_v2_super_message_ref_template); |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* Set 'objc_super_template' to the data type node for 'struct _objc_super'. |
| This needs to be done just once per compilation. */ |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| /* struct _objc_super { |
| struct _objc_object *self; |
| struct _objc_class *cls; // or Class cls; for the abi v2 |
| }; */ |
| /* APPLE LOCAL end ObjC abi v2 */ |
| |
| static void |
| build_super_template (void) |
| { |
| tree field_decl, field_decl_chain; |
| |
| objc_super_template = start_struct (RECORD_TYPE, get_identifier (UTAG_SUPER)); |
| |
| /* struct _objc_object *self; */ |
| field_decl = create_field_decl (objc_object_type, "self"); |
| field_decl_chain = field_decl; |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| /* Class cls; */ |
| field_decl = create_field_decl (objc_class_type, "cls"); |
| } |
| else |
| { |
| /* struct _objc_class *cls; */ |
| field_decl = create_field_decl (build_pointer_type (objc_class_template), |
| "cls"); |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_super_template, field_decl_chain, NULL_TREE); |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* struct ivar_t { |
| unsigned long int *offset; |
| char *name; |
| char *type; |
| uint32_t alignment; |
| uint32_t size; |
| }; */ |
| |
| static tree |
| build_v2_ivar_t_template (void) |
| { |
| tree objc_ivar_id, objc_ivar_record; |
| tree field_decl, field_decl_chain; |
| |
| objc_ivar_id = get_identifier ("_ivar_t"); |
| objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id); |
| |
| /* uint32_t *offset */ |
| field_decl = create_field_decl ( |
| /* APPLE LOCAL radar 4441049 */ |
| build_pointer_type (TREE_TYPE (size_zero_node)), "offset"); |
| field_decl_chain = field_decl; |
| |
| /* char *name; */ |
| field_decl = create_field_decl (string_type_node, "name"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* char *type; */ |
| field_decl = create_field_decl (string_type_node, "type"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* uint32_t alignment; */ |
| field_decl = create_field_decl (integer_type_node, "alignment"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* uint32_t size; */ |
| field_decl = create_field_decl (integer_type_node, "size"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_record; |
| } |
| |
| /* Build up: |
| |
| struct ivar_list_t { |
| uint32 entsize; |
| uint32 count; |
| struct iver_t list[count]; |
| }; */ |
| |
| static tree |
| build_v2_ivar_list_t_template (tree list_type, int size) |
| { |
| tree objc_ivar_list_record; |
| tree field_decl, field_decl_chain; |
| |
| objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* uint32 entsize; */ |
| field_decl = create_field_decl (integer_type_node, "entsize"); |
| field_decl_chain = field_decl; |
| |
| /* uint32 count; */ |
| field_decl = create_field_decl (integer_type_node, "count"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_ivar ivar_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_list_record; |
| |
| } |
| |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* struct _objc_ivar { |
| char *ivar_name; |
| char *ivar_type; |
| int ivar_offset; |
| }; */ |
| |
| static tree |
| build_ivar_template (void) |
| { |
| tree objc_ivar_id, objc_ivar_record; |
| tree field_decl, field_decl_chain; |
| |
| objc_ivar_id = get_identifier (UTAG_IVAR); |
| objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id); |
| |
| /* char *ivar_name; */ |
| field_decl = create_field_decl (string_type_node, "ivar_name"); |
| field_decl_chain = field_decl; |
| |
| /* char *ivar_type; */ |
| field_decl = create_field_decl (string_type_node, "ivar_type"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* int ivar_offset; */ |
| field_decl = create_field_decl (integer_type_node, "ivar_offset"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_record; |
| } |
| |
| /* struct { |
| int ivar_count; |
| struct objc_ivar ivar_list[ivar_count]; |
| }; */ |
| |
| static tree |
| build_ivar_list_template (tree list_type, int size) |
| { |
| tree objc_ivar_list_record; |
| tree field_decl, field_decl_chain; |
| |
| objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* int ivar_count; */ |
| field_decl = create_field_decl (integer_type_node, "ivar_count"); |
| field_decl_chain = field_decl; |
| |
| /* struct objc_ivar ivar_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "ivar_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_list_record; |
| } |
| |
| /* struct { |
| struct _objc__method_prototype_list *method_next; |
| int method_count; |
| struct objc_method method_list[method_count]; |
| }; */ |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* struct method_list_t { |
| uint32_t entsize; |
| uint32_t method_count; |
| struct objc_method method_list[method_count]; |
| }; */ |
| |
| static tree |
| build_v2_method_list_template (tree list_type, int size) |
| { |
| tree method_list_t_record; |
| tree field_decl, field_decl_chain; |
| |
| method_list_t_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* uint32_t const entsize */ |
| field_decl = create_field_decl (integer_type_node, "entsize"); |
| |
| field_decl_chain = field_decl; |
| |
| /* int method_count; */ |
| field_decl = create_field_decl (integer_type_node, "method_count"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_method method_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "method_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (method_list_t_record, field_decl_chain, NULL_TREE); |
| |
| return method_list_t_record; |
| } |
| static tree |
| /* APPLE LOCAL end ObjC new abi */ |
| build_method_list_template (tree list_type, int size) |
| { |
| tree objc_ivar_list_record; |
| tree field_decl, field_decl_chain; |
| |
| objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE); |
| |
| /* struct _objc__method_prototype_list *method_next; */ |
| /* APPLE LOCAL mainline */ |
| field_decl = create_field_decl (objc_method_proto_list_ptr, |
| "method_next"); |
| field_decl_chain = field_decl; |
| |
| /* int method_count; */ |
| field_decl = create_field_decl (integer_type_node, "method_count"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* struct objc_method method_list[]; */ |
| field_decl = create_field_decl (build_array_type |
| (list_type, |
| build_index_type |
| (build_int_cst (NULL_TREE, size - 1))), |
| "method_list"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE); |
| |
| return objc_ivar_list_record; |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* APPLE LOCAL begin radar 4705298, 4843145 */ |
| |
| /* Return a class's visibility attribute string, or |
| NULL if it has no visibility attribute set. */ |
| |
| static const char * |
| objc_class_visibility (tree class) |
| { |
| tree chain; |
| /* APPLE LOCAL begin radar 4894756 */ |
| /* Handle very odd case of a class with no @interface but with @implementation only! */ |
| if (class && TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) |
| return NULL; |
| /* APPLE LOCAL end radar 4894756 */ |
| gcc_assert (class && TREE_CODE (class) == CLASS_INTERFACE_TYPE); |
| for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) |
| if (is_attribute_p ("visibility", TREE_PURPOSE (chain))) |
| return TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE ((chain)))); |
| return NULL; |
| } |
| |
| /* Create a symbol whose visibility attribute matches that of |
| the given class. */ |
| |
| static tree |
| objc_create_global_decl_for_class (tree type, const char *name, tree class) |
| { |
| tree decl = create_global_decl (type, name); |
| const char *visibility = objc_class_visibility (class); |
| |
| if (visibility && strcmp (visibility, "hidden") == 0) |
| { |
| DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; |
| DECL_VISIBILITY_SPECIFIED (decl) = 1; |
| } |
| else if (visibility && strcmp (visibility, "default") == 0) |
| { |
| DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT; |
| DECL_VISIBILITY_SPECIFIED (decl) = 1; |
| } |
| |
| return decl; |
| } |
| /* APPLE LOCAL end radar 4705298 , 4843145*/ |
| |
| /* This routine builds a name to hold ivar offset. It is of the form: |
| .objc_ivar.CLASS_NAME.FIELD_DECL */ |
| |
| static void |
| create_ivar_offset_name (char *buf, tree class_name, tree field_decl) |
| { |
| tree fname = DECL_NAME (field_decl); |
| |
| /* APPLE LOCAL radar 4540451 */ |
| sprintf (buf, "%s%s.%s", STRING_V2_IVAR_OFFSET_PREFIX, |
| IDENTIFIER_POINTER (class_name), |
| IDENTIFIER_POINTER (fname)); |
| return; |
| } |
| |
| /* This routine declares a variable to hold the offset for ivar FIELD_DECL. |
| Variable name is .objc_ivar.ClassName.IvarName. */ |
| |
| static tree |
| ivar_offset_ref (tree class_name, tree field_decl) |
| { |
| tree decl; |
| char buf[512]; |
| tree *chain; |
| tree iter; |
| bool global_var; |
| tree field_decl_id; |
| |
| create_ivar_offset_name (buf, class_name, field_decl); |
| field_decl_id = get_identifier (buf); |
| |
| for (iter = ivar_offset_ref_chain; iter; iter = TREE_CHAIN (iter)) |
| { |
| tree var = TREE_PURPOSE (iter); |
| if (DECL_NAME (var) == field_decl_id) |
| return var; |
| } |
| |
| /* An existing offset symbol not found. Create a new one and add to the chain. */ |
| chain = &ivar_offset_ref_chain; |
| /* APPLE LOCAL radar 4951615 */ |
| global_var = IVAR_PUBLIC_OR_PROTECTED (field_decl); |
| /* APPLE LOCAL begin radar 4441049 */ |
| /* APPLE LOCAL begin radar 4705298, 4843145 */ |
| decl = global_var ? |
| objc_create_global_decl_for_class ( |
| TREE_TYPE (size_zero_node), buf, implementation_template) : |
| create_hidden_decl (TREE_TYPE (size_zero_node), buf); |
| /* APPLE LOCAL end radar 4705298 , 4843145*/ |
| /* APPLE LOCAL end radar 4441049 */ |
| |
| while (*chain) |
| chain = &TREE_CHAIN (*chain); |
| |
| /* APPLE LOCAL begin radar 4441049 */ |
| *chain = tree_cons (decl, byte_position (field_decl), NULL_TREE); |
| /* APPLE LOCAL end radar 4441049 */ |
| |
| return decl; |
| } |
| |
| /* This routine builds initializer-list needed to initialize 'struct ivar_t list[count] |
| of 'struct ivar_list_t' meta data. TYPE is 'struct ivar_t' and FIELD_DECL is |
| list of ivars for the target class. */ |
| |
| static tree |
| build_v2_ivar_list_initializer (tree class_name, tree type, tree field_decl) |
| { |
| tree initlist = NULL_TREE; |
| int val; |
| |
| do { |
| tree ivar = NULL_TREE; |
| |
| /* Unnamed bitfields are ignored. */ |
| if (!DECL_NAME (field_decl)) |
| { |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| continue; |
| } |
| |
| /* Set offset */ |
| ivar = tree_cons (NULL_TREE, |
| build_unary_op (ADDR_EXPR, ivar_offset_ref (class_name, field_decl), 0), |
| ivar); |
| |
| /* Set name */ |
| if (DECL_NAME (field_decl)) |
| ivar = tree_cons (NULL_TREE, |
| add_objc_string (DECL_NAME (field_decl), |
| meth_var_names), |
| ivar); |
| else |
| /* Unnamed bit-field ivar (yuck). */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| ivar = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| ivar); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* Set type */ |
| encode_field_decl (field_decl, |
| obstack_object_size (&util_obstack), |
| OBJC_ENCODE_DONT_INLINE_DEFS); |
| /* Null terminate string. */ |
| obstack_1grow (&util_obstack, 0); |
| ivar |
| = tree_cons |
| (NULL_TREE, |
| add_objc_string (get_identifier (obstack_finish (&util_obstack)), |
| meth_var_types), |
| ivar); |
| obstack_free (&util_obstack, util_firstobj); |
| |
| /* Set alignment */ |
| val = DECL_ALIGN_UNIT (field_decl); |
| val = exact_log2 (val); |
| ivar = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, val), ivar); |
| |
| /* Set size */ |
| val = TREE_INT_CST_LOW (DECL_SIZE_UNIT (field_decl)); |
| ivar = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, val), ivar); |
| |
| initlist = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (ivar)), |
| initlist); |
| |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| } |
| while (field_decl); |
| |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| static tree |
| /* APPLE LOCAL end ObjC new abi */ |
| build_ivar_list_initializer (tree type, tree field_decl) |
| { |
| tree initlist = NULL_TREE; |
| |
| do |
| { |
| tree ivar = NULL_TREE; |
| |
| /* Set name. */ |
| if (DECL_NAME (field_decl)) |
| ivar = tree_cons (NULL_TREE, |
| add_objc_string (DECL_NAME (field_decl), |
| meth_var_names), |
| ivar); |
| else |
| /* Unnamed bit-field ivar (yuck). */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| ivar = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| ivar); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* Set type. */ |
| encode_field_decl (field_decl, |
| obstack_object_size (&util_obstack), |
| OBJC_ENCODE_DONT_INLINE_DEFS); |
| |
| /* Null terminate string. */ |
| obstack_1grow (&util_obstack, 0); |
| ivar |
| = tree_cons |
| (NULL_TREE, |
| add_objc_string (get_identifier (obstack_finish (&util_obstack)), |
| meth_var_types), |
| ivar); |
| obstack_free (&util_obstack, util_firstobj); |
| |
| /* Set offset. */ |
| ivar = tree_cons (NULL_TREE, byte_position (field_decl), ivar); |
| initlist = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (ivar)), |
| initlist); |
| do |
| field_decl = TREE_CHAIN (field_decl); |
| while (field_decl && TREE_CODE (field_decl) != FIELD_DECL); |
| } |
| while (field_decl); |
| |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| static tree |
| generate_ivars_list (tree type, const char *name, int size, tree list) |
| { |
| tree decl, initlist; |
| |
| decl = start_var_decl (type, synth_id_with_class_suffix |
| (name, objc_implementation_context)); |
| |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, size)); |
| initlist = tree_cons (NULL_TREE, list, initlist); |
| |
| finish_var_decl (decl, |
| objc_build_constructor (TREE_TYPE (decl), |
| nreverse (initlist))); |
| |
| return decl; |
| } |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Count only the fields occurring in T. */ |
| /* APPLE LOCAL end mainline */ |
| |
| static int |
| ivar_list_length (tree t) |
| { |
| int count = 0; |
| |
| for (; t; t = TREE_CHAIN (t)) |
| if (TREE_CODE (t) == FIELD_DECL) |
| ++count; |
| |
| return count; |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* This routine outputs the (ivar_reference_offset, offset) tuples. */ |
| |
| static void |
| generate_v2_ivar_offset_ref_lists (void) |
| { |
| tree chain; |
| |
| for (chain = ivar_offset_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree decl = TREE_PURPOSE (chain); |
| tree offset = TREE_VALUE (chain); |
| finish_var_decl (decl, offset); |
| } |
| } |
| |
| /* This routine declares a static variable of type 'struct ivar_list_t' and initializes |
| it. TYPE is 'struct ivar_list_t'. NAME is the suffix for the variable. SIZE is |
| number of ivars. LIST is the initializer list for list data member of |
| 'struct ivar_list_t'. IVAR_T_SIZE is size of (struct ivar_t). */ |
| |
| static tree |
| generate_v2_ivars_list (tree type, const char *name, int ivar_t_size, |
| int size, tree list) |
| { |
| tree decl, initlist; |
| |
| decl = start_var_decl (type, synth_id_with_class_suffix |
| (name, objc_implementation_context)); |
| |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, ivar_t_size)); |
| |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); |
| |
| initlist = tree_cons (NULL_TREE, list, initlist); |
| |
| finish_var_decl (decl, |
| objc_build_constructor (TREE_TYPE (decl), |
| nreverse (initlist))); |
| |
| return decl; |
| } |
| |
| /* This is the top-level routine to build and initialize meta-data for both class and |
| instance variables. */ |
| |
| static void |
| generate_v2_ivar_lists (void) |
| { |
| tree initlist, ivar_list_template, chain; |
| int size; |
| |
| generating_instance_variables = 1; |
| |
| /* build: struct ivar_t {...}; type if not already done so. */ |
| if (!objc_v2_ivar_template) |
| objc_v2_ivar_template = build_v2_ivar_t_template (); |
| |
| /* Currently there is no class ivars and generation of class variables for the root of |
| the inheritance has been removed. It causes multiple defines if there are two root classes |
| in the link, because each will define its own identically-named offset variable. */ |
| |
| UOBJC_V2_CLASS_VARIABLES_decl = 0; |
| |
| chain = CLASS_IVARS (implementation_template); |
| if (chain) |
| { |
| size = ivar_list_length (chain); |
| ivar_list_template = build_v2_ivar_list_t_template (objc_v2_ivar_template, |
| size); |
| initlist = build_v2_ivar_list_initializer (CLASS_NAME (implementation_template), |
| objc_v2_ivar_template, chain); |
| |
| UOBJC_V2_INSTANCE_VARIABLES_decl |
| = generate_v2_ivars_list (ivar_list_template, "_OBJC_$_INSTANCE_VARIABLES", |
| TREE_INT_CST_LOW ( |
| TYPE_SIZE_UNIT (objc_v2_ivar_template)), |
| size, initlist); |
| } |
| else |
| UOBJC_V2_INSTANCE_VARIABLES_decl = 0; |
| |
| generating_instance_variables = 0; |
| } |
| |
| static void |
| /* APPLE LOCAL end ObjC new abi */ |
| generate_ivar_lists (void) |
| { |
| tree initlist, ivar_list_template, chain; |
| int size; |
| |
| generating_instance_variables = 1; |
| |
| if (!objc_ivar_template) |
| objc_ivar_template = build_ivar_template (); |
| |
| /* Only generate class variables for the root of the inheritance |
| hierarchy since these will be the same for every class. */ |
| |
| if (CLASS_SUPER_NAME (implementation_template) == NULL_TREE |
| && (chain = TYPE_FIELDS (objc_class_template))) |
| { |
| size = ivar_list_length (chain); |
| |
| ivar_list_template = build_ivar_list_template (objc_ivar_template, size); |
| initlist = build_ivar_list_initializer (objc_ivar_template, chain); |
| |
| UOBJC_CLASS_VARIABLES_decl |
| = generate_ivars_list (ivar_list_template, "_OBJC_CLASS_VARIABLES", |
| size, initlist); |
| } |
| else |
| UOBJC_CLASS_VARIABLES_decl = 0; |
| |
| chain = CLASS_IVARS (implementation_template); |
| if (chain) |
| { |
| size = ivar_list_length (chain); |
| ivar_list_template = build_ivar_list_template (objc_ivar_template, size); |
| initlist = build_ivar_list_initializer (objc_ivar_template, chain); |
| |
| UOBJC_INSTANCE_VARIABLES_decl |
| = generate_ivars_list (ivar_list_template, "_OBJC_INSTANCE_VARIABLES", |
| size, initlist); |
| } |
| else |
| UOBJC_INSTANCE_VARIABLES_decl = 0; |
| |
| generating_instance_variables = 0; |
| } |
| |
| static tree |
| build_dispatch_table_initializer (tree type, tree entries) |
| { |
| tree initlist = NULL_TREE; |
| |
| do |
| { |
| tree elemlist = NULL_TREE; |
| |
| elemlist = tree_cons (NULL_TREE, |
| build_selector (METHOD_SEL_NAME (entries)), |
| NULL_TREE); |
| |
| /* Generate the method encoding if we don't have one already. */ |
| if (! METHOD_ENCODING (entries)) |
| METHOD_ENCODING (entries) = |
| encode_method_prototype (entries); |
| |
| elemlist = tree_cons (NULL_TREE, |
| add_objc_string (METHOD_ENCODING (entries), |
| meth_var_types), |
| elemlist); |
| |
| elemlist |
| = tree_cons (NULL_TREE, |
| convert (ptr_type_node, |
| build_unary_op (ADDR_EXPR, |
| METHOD_DEFINITION (entries), 1)), |
| elemlist); |
| |
| initlist = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (elemlist)), |
| initlist); |
| |
| entries = TREE_CHAIN (entries); |
| } |
| while (entries); |
| |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| /* To accomplish method prototyping without generating all kinds of |
| inane warnings, the definition of the dispatch table entries were |
| changed from: |
| |
| struct objc_method { SEL _cmd; ...; id (*_imp)(); }; |
| to: |
| struct objc_method { SEL _cmd; ...; void *_imp; }; */ |
| |
| static tree |
| build_method_template (void) |
| { |
| tree _SLT_record; |
| tree field_decl, field_decl_chain; |
| |
| _SLT_record = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD)); |
| |
| /* SEL _cmd; */ |
| field_decl = create_field_decl (objc_selector_type, "_cmd"); |
| field_decl_chain = field_decl; |
| |
| /* char *method_types; */ |
| field_decl = create_field_decl (string_type_node, "method_types"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* void *_imp; */ |
| field_decl = create_field_decl (build_pointer_type (void_type_node), |
| "_imp"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (_SLT_record, field_decl_chain, NULL_TREE); |
| |
| return _SLT_record; |
| } |
| |
| |
| static tree |
| /* APPLE LOCAL ObjC new abi */ |
| generate_dispatch_table (tree type, const char *name, int size, tree list, bool newabi) |
| { |
| tree decl, initlist; |
| /* APPLE LOCAL begin ObjC new abi */ |
| int init_val = newabi |
| ? TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_method_template)) |
| : 0; |
| /* APPLE LOCAL end ObjC new abi */ |
| decl = start_var_decl (type, synth_id_with_class_suffix |
| (name, objc_implementation_context)); |
| |
| /* APPLE LOCAL ObjC new abi */ |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, init_val)); |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, size), initlist); |
| initlist = tree_cons (NULL_TREE, list, initlist); |
| |
| finish_var_decl (decl, |
| objc_build_constructor (TREE_TYPE (decl), |
| nreverse (initlist))); |
| |
| return decl; |
| } |
| |
| static void |
| mark_referenced_methods (void) |
| { |
| struct imp_entry *impent; |
| tree chain; |
| |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| chain = CLASS_CLS_METHODS (impent->imp_context); |
| while (chain) |
| { |
| cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain))); |
| chain = TREE_CHAIN (chain); |
| } |
| |
| chain = CLASS_NST_METHODS (impent->imp_context); |
| while (chain) |
| { |
| cgraph_mark_needed_node (cgraph_node (METHOD_DEFINITION (chain))); |
| chain = TREE_CHAIN (chain); |
| } |
| } |
| } |
| |
| static void |
| generate_dispatch_tables (void) |
| { |
| tree initlist, chain, method_list_template; |
| int size; |
| |
| if (!objc_method_template) |
| objc_method_template = build_method_template (); |
| |
| chain = CLASS_CLS_METHODS (objc_implementation_context); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_method_list_template (objc_method_template, size); |
| initlist |
| = build_dispatch_table_initializer (objc_method_template, chain); |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| UOBJC_CLASS_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| ((TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| ? "_OBJC_CLASS_METHODS" |
| : "_OBJC_CATEGORY_CLASS_METHODS"), |
| size, initlist, false); |
| /* APPLE LOCAL end ObjC new abi */ |
| } |
| else |
| UOBJC_CLASS_METHODS_decl = 0; |
| |
| chain = CLASS_NST_METHODS (objc_implementation_context); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_method_list_template (objc_method_template, size); |
| initlist |
| = build_dispatch_table_initializer (objc_method_template, chain); |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) |
| UOBJC_INSTANCE_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| "_OBJC_INSTANCE_METHODS", |
| size, initlist, false); |
| else |
| /* We have a category. */ |
| UOBJC_INSTANCE_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| "_OBJC_CATEGORY_INSTANCE_METHODS", |
| size, initlist, false); |
| /* APPLE LOCAL end ObjC new abi */ |
| } |
| else |
| UOBJC_INSTANCE_METHODS_decl = 0; |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| static void |
| generate_v2_dispatch_tables (void) |
| { |
| tree initlist, chain, method_list_template; |
| int size; |
| |
| if (!objc_method_template) |
| objc_method_template = build_method_template (); |
| |
| chain = CLASS_CLS_METHODS (objc_implementation_context); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_v2_method_list_template (objc_method_template, size); |
| initlist |
| = build_dispatch_table_initializer (objc_method_template, chain); |
| |
| UOBJC_V2_CLASS_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| ((TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| ? "_OBJC_$_CLASS_METHODS" |
| : "_OBJC_$_CATEGORY_CLASS_METHODS"), |
| size, initlist, true); |
| } |
| else |
| UOBJC_V2_CLASS_METHODS_decl = 0; |
| |
| chain = CLASS_NST_METHODS (objc_implementation_context); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_v2_method_list_template (objc_method_template, size); |
| initlist |
| = build_dispatch_table_initializer (objc_method_template, chain); |
| |
| if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) |
| UOBJC_V2_INSTANCE_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| "_OBJC_$_INSTANCE_METHODS", |
| size, initlist, true); |
| else |
| /* We have a category. */ |
| UOBJC_V2_INSTANCE_METHODS_decl |
| = generate_dispatch_table (method_list_template, |
| "_OBJC_$_CATEGORY_INSTANCE_METHODS", |
| size, initlist, true); |
| } |
| else |
| UOBJC_V2_INSTANCE_METHODS_decl = 0; |
| } |
| |
| /* This routine declares a variable to hold meta data for 'struct protocol_list_t'. */ |
| |
| static tree |
| generate_v2_protocol_list (tree i_or_p) |
| { |
| tree initlist; |
| tree refs_decl, lproto, e, plist; |
| int size = 0; |
| const char *ref_name; |
| |
| if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE |
| || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) |
| plist = CLASS_PROTOCOL_LIST (i_or_p); |
| else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) |
| plist = PROTOCOL_LIST (i_or_p); |
| else |
| abort (); |
| |
| /* Compute size. */ |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_V2_FORWARD_DECL (TREE_VALUE (lproto))) |
| size++; |
| |
| /* Build initializer. */ |
| initlist = NULL_TREE; |
| e = build_int_cst (build_pointer_type (objc_v2_protocol_template), size); |
| initlist = tree_cons (NULL_TREE, e, initlist); |
| |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| { |
| tree pval = TREE_VALUE (lproto); |
| |
| if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_V2_FORWARD_DECL (pval)) |
| { |
| e = build_unary_op (ADDR_EXPR, PROTOCOL_V2_FORWARD_DECL (pval), 0); |
| initlist = tree_cons (NULL_TREE, e, initlist); |
| } |
| } |
| |
| /* static struct protocol_list_t *list[size]; */ |
| |
| if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_$_PROTOCOL_REFS", i_or_p); |
| else if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_CLASS_PROTOCOLS_$", i_or_p); |
| else if (TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_CATEGORY_PROTOCOLS_$", i_or_p); |
| else |
| abort (); |
| |
| refs_decl = start_var_decl |
| (build_array_type |
| (build_pointer_type (objc_v2_protocol_template), |
| build_index_type (build_int_cst (NULL_TREE, size))), |
| ref_name); |
| |
| finish_var_decl (refs_decl, objc_build_constructor (TREE_TYPE (refs_decl), |
| nreverse (initlist))); |
| |
| return refs_decl; |
| } |
| |
| /* This routine builds one 'struct method_t' initializer list. Note that the old ABI |
| is supposed to build 'struct objc_method' which has 3 fields. But it does not |
| build the initialization expression for 'method_imp' which for protocols is NULL |
| any way. But to be consistant with declaration of 'struct method_t', in the new |
| ABI we set the method_t.imp to NULL. */ |
| |
| static tree |
| build_v2_descriptor_table_initializer (tree type, tree entries) |
| { |
| tree initlist = NULL_TREE; |
| |
| do |
| { |
| tree eltlist |
| = tree_cons (NULL_TREE, |
| build_selector (METHOD_SEL_NAME (entries)), NULL_TREE); |
| eltlist |
| = tree_cons (NULL_TREE, |
| add_objc_string (METHOD_ENCODING (entries), |
| meth_var_types), |
| eltlist); |
| |
| /* LLVM LOCAL begin */ |
| eltlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| eltlist); |
| /* LLVM LOCAL end */ |
| initlist |
| = tree_cons (NULL_TREE, |
| objc_build_constructor (type, nreverse (eltlist)), |
| initlist); |
| |
| entries = TREE_CHAIN (entries); |
| } |
| while (entries); |
| |
| return objc_build_constructor (build_array_type (type, 0), |
| nreverse (initlist)); |
| } |
| |
| /* This routine builds instance_methods and class_methods use to declare a |
| protocole. */ |
| |
| static void |
| /* APPLE LOCAL begin radar 4695109 */ |
| generate_v2_method_descriptors (tree protocol, bool is_optional) |
| { |
| tree initlist, chain, method_list_template; |
| int size; |
| |
| if (!objc_method_template) |
| objc_method_template = build_method_template (); |
| |
| chain = is_optional ? PROTOCOL_OPTIONAL_CLS_METHODS (protocol) |
| : PROTOCOL_CLS_METHODS (protocol); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_v2_method_list_template (objc_method_template, size); |
| |
| initlist |
| = build_v2_descriptor_table_initializer (objc_method_template, chain); |
| |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_$_PROTOCOL_CLASS_METHODS_OPT", |
| size, initlist, protocol, true); |
| else |
| UOBJC_V2_CLASS_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_$_PROTOCOL_CLASS_METHODS", |
| size, initlist, protocol, true); |
| } |
| else |
| { |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl = 0; |
| else |
| UOBJC_V2_CLASS_METHODS_decl = 0; |
| } |
| |
| chain = is_optional ? PROTOCOL_OPTIONAL_NST_METHODS (protocol) |
| : PROTOCOL_NST_METHODS (protocol); |
| if (chain) |
| { |
| size = list_length (chain); |
| |
| method_list_template |
| = build_v2_method_list_template (objc_method_template, size); |
| initlist |
| = build_v2_descriptor_table_initializer (objc_method_template, chain); |
| |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT", |
| size, initlist, protocol, true); |
| else |
| UOBJC_V2_INSTANCE_METHODS_decl |
| = generate_descriptor_table (method_list_template, |
| "_OBJC_$_PROTOCOL_INSTANCE_METHODS", |
| size, initlist, protocol, true); |
| } |
| else |
| { |
| if (is_optional) |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl = 0; |
| else |
| UOBJC_V2_INSTANCE_METHODS_decl = 0; |
| } |
| } |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| static tree |
| /* APPLE LOCAL end ObjC new abi */ |
| generate_protocol_list (tree i_or_p) |
| { |
| tree initlist; |
| tree refs_decl, lproto, e, plist; |
| int size = 0; |
| const char *ref_name; |
| |
| if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE |
| || TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) |
| plist = CLASS_PROTOCOL_LIST (i_or_p); |
| else if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) |
| plist = PROTOCOL_LIST (i_or_p); |
| else |
| abort (); |
| |
| /* Compute size. */ |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| if (TREE_CODE (TREE_VALUE (lproto)) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_FORWARD_DECL (TREE_VALUE (lproto))) |
| size++; |
| |
| /* Build initializer. */ |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), NULL_TREE); |
| e = build_int_cst (build_pointer_type (objc_protocol_template), size); |
| initlist = tree_cons (NULL_TREE, e, initlist); |
| |
| for (lproto = plist; lproto; lproto = TREE_CHAIN (lproto)) |
| { |
| tree pval = TREE_VALUE (lproto); |
| |
| if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_FORWARD_DECL (pval)) |
| { |
| e = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (pval), 0); |
| initlist = tree_cons (NULL_TREE, e, initlist); |
| } |
| } |
| |
| /* static struct objc_protocol *refs[n]; */ |
| |
| if (TREE_CODE (i_or_p) == PROTOCOL_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL_REFS", i_or_p); |
| else if (TREE_CODE (i_or_p) == CLASS_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_CLASS_PROTOCOLS", i_or_p); |
| else if (TREE_CODE (i_or_p) == CATEGORY_INTERFACE_TYPE) |
| ref_name = synth_id_with_class_suffix ("_OBJC_CATEGORY_PROTOCOLS", i_or_p); |
| else |
| abort (); |
| |
| refs_decl = start_var_decl |
| (build_array_type |
| (build_pointer_type (objc_protocol_template), |
| build_index_type (build_int_cst (NULL_TREE, size + 2))), |
| ref_name); |
| |
| finish_var_decl (refs_decl, objc_build_constructor (TREE_TYPE (refs_decl), |
| nreverse (initlist))); |
| |
| return refs_decl; |
| } |
| |
| static tree |
| build_category_initializer (tree type, tree cat_name, tree class_name, |
| tree instance_methods, tree class_methods, |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| tree protocol_list, |
| bool abi_v2, tree property_list) |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| { |
| tree initlist = NULL_TREE, expr; |
| |
| initlist = tree_cons (NULL_TREE, cat_name, initlist); |
| initlist = tree_cons (NULL_TREE, class_name, initlist); |
| |
| if (!instance_methods) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_method_list_ptr, |
| build_unary_op (ADDR_EXPR, instance_methods, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| if (!class_methods) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_method_list_ptr, |
| build_unary_op (ADDR_EXPR, class_methods, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* protocol_list = */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| { |
| tree protocol_list_ptr = |
| (abi_v2) ? build_pointer_type (objc_v2_protocol_template) |
| : build_pointer_type (build_pointer_type (objc_protocol_template)); |
| |
| if (!protocol_list) |
| initlist = tree_cons (NULL_TREE, |
| convert (protocol_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| else |
| { |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ |
| expr = convert (protocol_list_ptr, build_unary_op (ADDR_EXPR, protocol_list, 0)); |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| if (!abi_v2) |
| { |
| /* uint32_t size; */ |
| int val = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_category_template)); |
| expr = build_int_cst (NULL_TREE, val); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| /* struct _objc_property_list *instance_properties; */ |
| if (!property_list) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_prop_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_prop_list_ptr, |
| build_unary_op (ADDR_EXPR, property_list, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* struct _objc_class { |
| struct objc_class *isa; |
| struct objc_class *super_class; |
| char *name; |
| long version; |
| long info; |
| long instance_size; |
| struct objc_ivar_list *ivars; |
| struct objc_method_list *methods; |
| if (flag_next_runtime) |
| struct objc_cache *cache; |
| else { |
| struct sarray *dtable; |
| struct objc_class *subclass_list; |
| struct objc_class *sibling_class; |
| } |
| struct objc_protocol_list *protocols; |
| if (flag_next_runtime) |
| void *sel_id; |
| void *gc_object_type; |
| }; */ |
| |
| static tree |
| build_shared_structure_initializer (tree type, tree isa, tree super, |
| tree name, tree size, int status, |
| tree dispatch_table, tree ivar_list, |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| tree protocol_list, tree objc_class_ext) |
| { |
| tree initlist = NULL_TREE, expr; |
| |
| /* isa = */ |
| initlist = tree_cons (NULL_TREE, isa, initlist); |
| |
| /* super_class = */ |
| initlist = tree_cons (NULL_TREE, super, initlist); |
| |
| /* name = */ |
| initlist = tree_cons (NULL_TREE, default_conversion (name), initlist); |
| |
| /* version = */ |
| initlist = tree_cons (NULL_TREE, build_int_cst (long_integer_type_node, 0), |
| initlist); |
| |
| /* info = */ |
| initlist = tree_cons (NULL_TREE, |
| build_int_cst (long_integer_type_node, status), |
| initlist); |
| |
| /* instance_size = */ |
| initlist = tree_cons (NULL_TREE, convert (long_integer_type_node, size), |
| initlist); |
| |
| /* objc_ivar_list = */ |
| if (!ivar_list) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_ivar_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_ivar_list_ptr, |
| build_unary_op (ADDR_EXPR, ivar_list, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* objc_method_list = */ |
| if (!dispatch_table) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| /* APPLE LOCAL begin mainline */ |
| expr = convert (objc_method_list_ptr, |
| build_unary_op (ADDR_EXPR, dispatch_table, 0)); |
| /* APPLE LOCAL end mainline */ |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| if (flag_next_runtime) |
| /* method_cache = */ |
| initlist = tree_cons (NULL_TREE, |
| convert (build_pointer_type |
| (xref_tag (RECORD_TYPE, |
| get_identifier |
| ("objc_cache"))), |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| else |
| { |
| tree null_objc_class_ptr = |
| convert (build_pointer_type (objc_class_template), |
| build_int_cst (NULL_TREE, 0)); |
| |
| /* dtable = */ |
| initlist = tree_cons (NULL_TREE, |
| convert (build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier |
| ("sarray"))), |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| |
| /* subclass_list = */ |
| initlist = tree_cons (NULL_TREE, null_objc_class_ptr, initlist); |
| |
| /* sibling_class = */ |
| initlist = tree_cons (NULL_TREE, null_objc_class_ptr, initlist); |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* protocol_list = */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| { |
| tree objc_protocol_ptr_ptr = |
| build_pointer_type (build_pointer_type (objc_protocol_template)); |
| |
| if (!protocol_list) |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_protocol_ptr_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| else |
| { |
| expr = convert (objc_protocol_ptr_ptr, |
| build_unary_op (ADDR_EXPR, protocol_list, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| if (flag_next_runtime) |
| { |
| /* const char *ivar_layout; */ |
| if (IS_CLS_META (status)) /* Meta Class ? */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| tree ivar_layout = objc_build_ivar_layout (true); |
| if (!ivar_layout) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| initlist = tree_cons (NULL_TREE, ivar_layout, initlist); |
| } |
| /* struct _objc_class_ext *ext; */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| if (!objc_class_ext_template) |
| build_objc_class_ext_template (); |
| |
| { |
| tree objc_class_ext_ptr = |
| build_pointer_type (objc_class_ext_template); |
| |
| if (!objc_class_ext) |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_class_ext_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| else |
| { |
| expr = convert (objc_class_ext_ptr, |
| build_unary_op (ADDR_EXPR, objc_class_ext, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| } |
| else |
| /* gc_object_type = NULL */ |
| /* APPLE LOCAL LLVM - NUL pointer */ |
| initlist = tree_cons (NULL_TREE, null_pointer_node, initlist); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* Retrieve category interface CAT_NAME (if any) associated with CLASS. */ |
| |
| static inline tree |
| lookup_category (tree class, tree cat_name) |
| { |
| tree category = CLASS_CATEGORY_LIST (class); |
| |
| while (category && CLASS_SUPER_NAME (category) != cat_name) |
| category = CLASS_CATEGORY_LIST (category); |
| return category; |
| } |
| |
| /* static struct objc_category _OBJC_CATEGORY_<name> = { ... }; */ |
| |
| static void |
| /* APPLE LOCAL radar 4349690 */ |
| generate_category (tree cat, struct imp_entry *impent) |
| { |
| tree decl; |
| tree initlist, cat_name_expr, class_name_expr; |
| tree protocol_decl, category; |
| |
| add_class_reference (CLASS_NAME (cat)); |
| cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names); |
| |
| class_name_expr = add_objc_string (CLASS_NAME (cat), class_names); |
| |
| category = lookup_category (implementation_template, |
| CLASS_SUPER_NAME (cat)); |
| |
| if (category && CLASS_PROTOCOL_LIST (category)) |
| { |
| generate_protocol_references (CLASS_PROTOCOL_LIST (category)); |
| protocol_decl = generate_protocol_list (category); |
| } |
| else |
| protocol_decl = 0; |
| |
| /* APPLE LOCAL radar 4349690 */ |
| decl = update_var_decl(impent->class_decl); |
| |
| initlist = build_category_initializer (TREE_TYPE (decl), |
| cat_name_expr, class_name_expr, |
| UOBJC_INSTANCE_METHODS_decl, |
| UOBJC_CLASS_METHODS_decl, |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| protocol_decl, |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| false, UOBJC_V2_PROPERTY_decl); |
| |
| finish_var_decl (decl, initlist); |
| } |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| /* APPLE LOCAL begin ObjC new abi */ |
| |
| /* APPLE LOCAL begin radar 4698856 */ |
| /* Routine to build UOBJC_V2_CACHE_decl and UOBJC_V2_VTABLE_decl, |
| if need be. |
| */ |
| |
| static void |
| build_empty_cache_vtable_vars (void) |
| { |
| UOBJC_V2_CACHE_decl = lookup_name (get_identifier ("_objc_empty_cache")); |
| if (!UOBJC_V2_CACHE_decl) |
| UOBJC_V2_CACHE_decl = create_extern_decl (ptr_type_node, "_objc_empty_cache"); |
| UOBJC_V2_VTABLE_decl = lookup_name (get_identifier ("_objc_empty_vtable")); |
| if (!UOBJC_V2_VTABLE_decl) |
| UOBJC_V2_VTABLE_decl = create_extern_decl (objc_imp_type, "_objc_empty_vtable"); |
| } |
| /* APPLE LOCAL end radar 4698856 */ |
| |
| /* static struct category_t _OBJC_CATEGORY_$_<name> = { ... }; */ |
| |
| static void |
| generate_v2_category (tree cat, struct imp_entry *impent) |
| { |
| tree decl; |
| tree initlist, cat_name_expr, class_name_expr; |
| tree protocol_decl, category; |
| |
| cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names); |
| |
| (void)objc_v2_get_class_reference (CLASS_NAME (cat)); |
| |
| class_name_expr = create_extern_decl (objc_v2_class_template, |
| objc_build_internal_classname ( |
| CLASS_NAME (cat), false)); |
| class_name_expr = build_fold_addr_expr (class_name_expr); |
| |
| category = lookup_category (implementation_template, |
| CLASS_SUPER_NAME (cat)); |
| |
| if (category && CLASS_PROTOCOL_LIST (category)) |
| { |
| /* APPLE LOCAL radar 4695109 */ |
| generate_v2_protocol_references (CLASS_PROTOCOL_LIST (category)); |
| protocol_decl = generate_v2_protocol_list (category); |
| } |
| else |
| protocol_decl = 0; |
| |
| decl = update_var_decl(impent->class_v2_decl); |
| |
| initlist = build_category_initializer (TREE_TYPE (decl), |
| cat_name_expr, class_name_expr, |
| UOBJC_V2_INSTANCE_METHODS_decl, |
| UOBJC_V2_CLASS_METHODS_decl, |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| protocol_decl, |
| true, UOBJC_V2_PROPERTY_decl); |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| |
| finish_var_decl (decl, initlist); |
| |
| /* Add to list of pointers in __category_list section */ |
| objc_add_to_category_list_chain (decl); |
| if (CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) != NULL_TREE) |
| objc_add_to_nonlazy_category_list_chain (decl); |
| } |
| |
| /* Build the name for object of type struct class_ro_t */ |
| |
| static const char * |
| newabi_append_ro (const char *name) |
| { |
| char *dollar; |
| char *p; |
| static char string[BUFSIZE]; |
| dollar = strchr (name, '$'); |
| gcc_assert (dollar); |
| p = string; |
| *p = '_'; p++; |
| strncpy (p, name, (int)(dollar - name)); |
| p += (int)(dollar - name); |
| sprintf (p, "RO_%s", dollar); |
| return string; |
| } |
| |
| /* Routine to build initializer list to initialize objects of type struct class_t; */ |
| |
| static tree |
| build_class_t_initializer (tree type, tree isa, tree superclass, tree ro, tree cache, tree vtable) |
| { |
| tree initlist = NULL_TREE; |
| |
| /* isa */ |
| initlist = tree_cons (NULL_TREE, isa, initlist); |
| |
| /* superclass */ |
| initlist = tree_cons (NULL_TREE, superclass, initlist); |
| |
| /* cache */ |
| if (cache) |
| initlist = tree_cons (NULL_TREE, cache, initlist); |
| else |
| /* APPLE LOCAL LLVM - NUL pointer */ |
| initlist = tree_cons (NULL_TREE, null_pointer_node, initlist); |
| |
| /* vtable */ |
| if (vtable) |
| initlist = tree_cons (NULL_TREE, vtable, initlist); |
| else |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (build_pointer_type (objc_imp_type), |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* ro */ |
| initlist = tree_cons (NULL_TREE, ro, initlist); |
| |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| static tree |
| build_class_ro_t_initializer (tree type, tree name, |
| unsigned int flags, unsigned int instanceStart, unsigned int instanceSize, |
| /* APPLE LOCAL radar 4695101 */ |
| tree ivarLayout, |
| tree baseMethods, tree baseProtocols, tree ivars, |
| /* APPLE LOCAL radar 4695101 */ |
| tree weakIvarLayout, |
| tree property_list) |
| { |
| tree initlist = NULL_TREE, expr; |
| |
| /* flags */ |
| initlist = tree_cons (NULL_TREE, |
| build_int_cst (integer_type_node, flags), |
| initlist); |
| |
| /* instanceStart */ |
| initlist = tree_cons (NULL_TREE, |
| build_int_cst (integer_type_node, instanceStart), |
| initlist); |
| |
| /* instanceSize */ |
| initlist = tree_cons (NULL_TREE, |
| build_int_cst (integer_type_node, instanceSize), |
| initlist); |
| |
| /* reserved */ |
| if (TARGET_64BIT) |
| initlist = tree_cons (NULL_TREE, |
| build_int_cst (integer_type_node, 0), |
| initlist); |
| |
| /* APPLE LOCAL begin radar 4695101 */ |
| /* ivarLayout */ |
| if (!ivarLayout) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| initlist = tree_cons (NULL_TREE, ivarLayout, initlist); |
| /* APPLE LOCAL end radar 4695101 */ |
| |
| /* name */ |
| initlist = tree_cons (NULL_TREE, default_conversion (name), initlist); |
| |
| /* baseMethods */ |
| if (!baseMethods) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_method_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_method_list_ptr, |
| build_unary_op (ADDR_EXPR, baseMethods, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* baseProtocols */ |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| { |
| tree protocol_list_t_p = |
| build_pointer_type (xref_tag (RECORD_TYPE, |
| get_identifier (UTAG_V2_PROTOCOL_LIST))); |
| |
| if (!baseProtocols) |
| initlist = tree_cons (NULL_TREE, |
| convert (protocol_list_t_p, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| else |
| { |
| expr = convert (protocol_list_t_p, |
| build_unary_op (ADDR_EXPR, baseProtocols, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* ivars */ |
| if (!ivars) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_v2_ivar_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_v2_ivar_list_ptr, |
| build_unary_op (ADDR_EXPR, ivars, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| |
| /* APPLE LOCAL begin radar 4695101 */ |
| /* weakIvarLayout */ |
| if (!weakIvarLayout) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| initlist = tree_cons (NULL_TREE, weakIvarLayout, initlist); |
| /* APPLE LOCAL end radar 4695101 */ |
| |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| /* property list */ |
| if (!property_list) |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| initlist = tree_cons (NULL_TREE, |
| convert (objc_prop_list_ptr, |
| build_int_cst (NULL_TREE, 0)), |
| initlist); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| else |
| { |
| expr = convert (objc_prop_list_ptr, |
| build_unary_op (ADDR_EXPR, property_list, 0)); |
| initlist = tree_cons (NULL_TREE, expr, initlist); |
| } |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| return objc_build_constructor (type, nreverse (initlist)); |
| } |
| |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol - radar 4695109 */ |
| /* Add the local protocol meta-data declaration to the list which later on ends up |
| in the __protocol_list section. */ |
| |
| static void |
| objc_add_to_protocol_list_chain (tree protocol_decl) |
| { |
| tree *chain; |
| for (chain = &protocol_list_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| ; |
| *chain = tree_cons (NULL_TREE, protocol_decl, NULL_TREE); |
| } |
| |
| /* Build the __protocol_list section table containing address of all generate protocol_t |
| meta-data. */ |
| |
| static void |
| build_protocol_list_address_table (void) |
| { |
| tree chain; |
| int count=0; |
| tree type; |
| tree initlist = NULL_TREE; |
| tree decl; |
| tree expr; |
| tree list_chain = protocol_list_chain; |
| const char *label_name = "_OBJC_LABEL_PROTOCOL_$"; |
| |
| for (chain = list_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree purpose = NULL_TREE; |
| expr = TREE_VALUE (chain); |
| expr = convert (objc_protocol_type, build_fold_addr_expr (expr)); |
| #ifndef OBJCPLUS |
| purpose = build_int_cst (NULL_TREE, count); |
| #endif |
| ++count; |
| initlist = tree_cons (purpose, expr, initlist); |
| } |
| gcc_assert (count > 0); |
| type = build_array_type (objc_protocol_type, |
| build_index_type (build_int_cst (NULL_TREE, count - 1))); |
| decl = start_var_decl (type, label_name); |
| expr = objc_build_constructor (type, nreverse (initlist)); |
| /* APPLE LOCAL radar 4561192 */ |
| objc_set_alignment_attribute (decl, objc_protocol_type); |
| finish_var_decl (decl, expr); |
| } |
| |
| /* Build decl = initializer; for each protocol referenced in @protocol(MyProtole) expression. */ |
| |
| static void |
| build_protocollist_translation_table (void) |
| { |
| tree chain; |
| static char string[BUFSIZE]; |
| |
| for (chain = protocollist_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree expr = TREE_VALUE (chain); |
| tree decl = TREE_PURPOSE (chain); |
| gcc_assert (TREE_CODE (expr) == PROTOCOL_INTERFACE_TYPE); |
| /* APPLE LOCAL begin radar 4695109 */ |
| /* APPLE LOCAL begin - LLVM radar 5476262 */ |
| sprintf (string, "L_OBJC_PROTOCOL_$_%s", |
| IDENTIFIER_POINTER (PROTOCOL_NAME (expr))); |
| #ifdef ENABLE_LLVM |
| expr = lookup_name (get_identifier(string)); |
| if (expr == NULL_TREE) |
| #endif |
| expr = start_var_decl (objc_v2_protocol_template, &string[1]); |
| /* APPLE LOCAL end - LLVM radar 5476262 */ |
| /* APPLE LOCAL end radar 4695109 */ |
| expr = convert (objc_protocol_type, build_fold_addr_expr (expr)); |
| finish_var_decl (decl, expr); |
| } |
| } |
| |
| /* This routine builds the protocol_reference_chain for each protocol name used |
| @protocol(MyProtocol) expression. IDENT is current protocol name. */ |
| |
| static tree |
| objc_v2_get_protocol_reference (tree ident) |
| { |
| tree *chain; |
| tree decl; |
| |
| for (chain = &protocollist_ref_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| if (TREE_VALUE (*chain) == ident) |
| { |
| if (! TREE_PURPOSE (*chain)) |
| TREE_PURPOSE (*chain) = build_protocollist_reference_decl (); |
| |
| return TREE_PURPOSE (*chain); |
| } |
| |
| decl = build_protocollist_reference_decl (); |
| *chain = tree_cons (decl, ident, NULL_TREE); |
| return decl; |
| } |
| |
| static GTY(()) int protocollist_reference_idx; |
| |
| /* This routine creates a static variable used to implement @protocol(MyProtocol) |
| expression. This variable will be initialized to global protocol_t meta-data |
| pointer. */ |
| |
| static tree |
| build_protocollist_reference_decl (void) |
| { |
| tree decl; |
| char buf[BUFSIZE]; |
| |
| sprintf (buf, "_OBJC_PROTOCOL_REFERENCE_$_%d", protocollist_reference_idx++); |
| decl = start_var_decl (objc_protocol_type, buf); |
| |
| return decl; |
| } |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ |
| |
| /* Add the global class meta-data declaration to the list which later on ends up |
| in the __nonlazy_class section. */ |
| |
| static void |
| objc_add_to_nonlazy_class_list_chain (tree global_class_decl) |
| { |
| tree *chain; |
| for (chain = &nonlazy_class_list_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| ; |
| *chain = tree_cons (NULL_TREE, global_class_decl, NULL_TREE); |
| } |
| |
| /* Add the global class meta-data declaration to the list which later on ends up |
| in the __class_list section. */ |
| |
| static void |
| objc_add_to_class_list_chain (tree global_class_decl) |
| { |
| tree *chain; |
| for (chain = &class_list_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| ; |
| *chain = tree_cons (NULL_TREE, global_class_decl, NULL_TREE); |
| } |
| |
| /* Add the category meta-data declaration to the list which later on ends up |
| in the __nonlazy_category section. */ |
| |
| static void |
| objc_add_to_nonlazy_category_list_chain (tree global_category_decl) |
| { |
| tree *chain; |
| for (chain = &nonlazy_category_list_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| ; |
| *chain = tree_cons (NULL_TREE, global_category_decl, NULL_TREE); |
| } |
| |
| /* Add the category meta-data declaration to the list which later on ends up |
| in the __category_list section. */ |
| |
| static void |
| objc_add_to_category_list_chain (tree global_category_decl) |
| { |
| tree *chain; |
| for (chain = &category_list_chain; *chain; chain = &TREE_CHAIN (*chain)) |
| ; |
| *chain = tree_cons (NULL_TREE, global_category_decl, NULL_TREE); |
| } |
| |
| /* Routine to build object of struct class_ro_t { ... }; */ |
| |
| static void |
| generate_v2_shared_structures (int cls_flags) |
| { |
| tree sc_spec, decl_specs, decl; |
| tree name_expr, root_expr = NULL_TREE; |
| tree my_super_id = NULL_TREE; |
| tree initlist, protocol_decl; |
| unsigned int instanceStart, instanceSize; |
| /* APPLE LOCAL begin radar 4695101 */ |
| tree ivarLayout; |
| tree weakIvarLayout; |
| /* APPLE LOCAL end radar 4695101 */ |
| tree metaclass_decl, class_decl; |
| tree field, firstIvar; |
| tree class_superclass_expr, metaclass_superclass_expr; |
| unsigned int flags = 0x1; /* Start with CLS_META */ |
| /* APPLE LOCAL begin radar 4705298, 4843145 */ |
| class_decl = objc_create_global_decl_for_class ( |
| objc_v2_class_template, |
| IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_CLASS_decl)), |
| implementation_template); |
| metaclass_decl = objc_create_global_decl_for_class ( |
| objc_v2_class_template, |
| IDENTIFIER_POINTER (DECL_NAME (UOBJC_V2_METACLASS_decl)), |
| implementation_template); |
| |
| if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN) |
| flags |= OBJC2_CLS_HIDDEN; |
| /* APPLE LOCAL end radar 4705298, 4843145*/ |
| |
| /* Generation of data for meta class */ |
| my_super_id = CLASS_SUPER_NAME (implementation_template); |
| if (my_super_id) |
| { |
| /* compute reference to root's name. For meta class, "isa" is reference |
| to root class name. */ |
| tree sav; |
| tree my_root_id = my_super_id; |
| tree my_root_int; |
| tree interface; |
| do |
| { |
| my_root_int = lookup_interface (my_root_id); |
| |
| if (my_root_int && CLASS_SUPER_NAME (my_root_int)) |
| my_root_id = CLASS_SUPER_NAME (my_root_int); |
| else |
| break; |
| } |
| while (1); |
| sav = objc_implementation_context; |
| objc_implementation_context = my_root_int; |
| root_expr = build_metadata_decl ("OBJC_METACLASS_$", objc_v2_class_template); |
| root_expr = build_fold_addr_expr (root_expr); |
| |
| /* Install class `isa' and `super' pointers at runtime. */ |
| interface = lookup_interface (my_super_id); |
| gcc_assert (interface); |
| objc_implementation_context = interface; |
| /* Note! I had to remove '_' prefix to 'OBJC' to make this an extern symbol. Darwin's |
| back-end, recognizes '_OBJC_' prefix and prepends an 'L' in front of this. Darwin |
| assembler treats names starting with 'L_' as local symbols. */ |
| class_superclass_expr = build_metadata_decl ("OBJC_CLASS_$", objc_v2_class_template); |
| class_superclass_expr = build_fold_addr_expr (class_superclass_expr); |
| metaclass_superclass_expr = build_metadata_decl ("OBJC_METACLASS_$", objc_v2_class_template); |
| metaclass_superclass_expr = build_fold_addr_expr (metaclass_superclass_expr); |
| objc_implementation_context = sav; |
| } |
| else |
| { |
| /* root class. */ |
| root_expr = build_unary_op (ADDR_EXPR, metaclass_decl, 0); |
| metaclass_superclass_expr = build_unary_op (ADDR_EXPR, class_decl, 0); |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| class_superclass_expr = convert (build_pointer_type (objc_v2_class_template), |
| build_int_cst (NULL_TREE, 0)); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| flags |= 0x2; /* CLS_ROOT: it is also a root meta class */ |
| } |
| |
| |
| if (CLASS_PROTOCOL_LIST (implementation_template)) |
| { |
| /* APPLE LOCAL begin radar 4695109 */ |
| generate_v2_protocol_references |
| (CLASS_PROTOCOL_LIST (implementation_template)); |
| /* APPLE LOCAL end radar 4695109 */ |
| protocol_decl = generate_v2_protocol_list (implementation_template); |
| } |
| else |
| protocol_decl = 0; |
| |
| /* static struct class_ro_t _OBJC_METACLASS_Foo = { ... }; */ |
| |
| /* APPLE LOCAL begin radar 4702359 */ |
| instanceStart = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); |
| instanceSize = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (objc_v2_class_template)); |
| /* APPLE LOCAL end radar 4702359 */ |
| |
| name_expr = add_objc_string (CLASS_NAME (implementation_template), |
| class_names); |
| |
| sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]); |
| decl_specs = tree_cons (NULL_TREE, objc_v2_class_ro_template, sc_spec); |
| |
| decl = start_var_decl (objc_v2_class_ro_template, |
| newabi_append_ro (IDENTIFIER_POINTER |
| (DECL_NAME (UOBJC_V2_METACLASS_decl)))); |
| |
| initlist = build_class_ro_t_initializer |
| (TREE_TYPE (decl), |
| name_expr, |
| (flags | cls_flags), instanceStart, instanceSize, |
| /* APPLE LOCAL radar 4695101 */ |
| NULL_TREE, UOBJC_V2_CLASS_METHODS_decl, protocol_decl, |
| UOBJC_V2_CLASS_VARIABLES_decl, |
| /* APPLE LOCAL radar 4695101 */ |
| NULL_TREE, |
| NULL_TREE); |
| |
| finish_var_decl (decl, initlist); |
| |
| /* APPLE LOCAL radar 4698856*/ |
| build_empty_cache_vtable_vars (); |
| |
| /* static struct class_t _OBJC_METACLASS_Foo = { ... }; */ |
| initlist = build_class_t_initializer (TREE_TYPE (metaclass_decl), |
| root_expr, |
| metaclass_superclass_expr, |
| build_fold_addr_expr (decl), |
| build_fold_addr_expr (UOBJC_V2_CACHE_decl), |
| build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); |
| finish_var_decl (metaclass_decl, initlist); |
| |
| /* Generation of data for the class */ |
| |
| flags = 0x0; /* CLS */ |
| /* APPLE LOCAL begin radar 4705298, 4843145 */ |
| if (DECL_VISIBILITY (class_decl) == VISIBILITY_HIDDEN) |
| flags |= OBJC2_CLS_HIDDEN; |
| /* APPLE LOCAL end radar 4705298, 48431458 */ |
| if (!my_super_id) |
| flags |= 0x2; /* CLS_ROOT: this is a root class */ |
| /* APPLE LOCAL begin radar 5008110 */ |
| if (objc2_objc_exception_attr (implementation_template)) |
| flags |= 0x20; |
| /* APPLE LOCAL end radar 5008110 */ |
| |
| /* Compute instanceStart */ |
| gcc_assert (CLASS_TYPE (implementation_template)); |
| field = TYPE_FIELDS (CLASS_TYPE (implementation_template)); |
| if (my_super_id && field && TREE_CHAIN (field)) |
| field = TREE_CHAIN (field); |
| |
| firstIvar = field; |
| |
| while (firstIvar && TREE_CODE (firstIvar) != FIELD_DECL) |
| firstIvar = TREE_CHAIN (firstIvar); |
| gcc_assert (UOBJC_V2_INSTANCE_VARIABLES_decl? (firstIvar != NULL_TREE): true); |
| |
| /* Compute instanceSize */ |
| while (field && TREE_CHAIN (field) |
| && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) |
| field = TREE_CHAIN (field); |
| |
| if (field && TREE_CODE (field) == FIELD_DECL) |
| instanceSize = int_byte_position (field) * BITS_PER_UNIT + tree_low_cst (DECL_SIZE (field), 0); |
| else |
| instanceSize = 0; |
| instanceSize /= BITS_PER_UNIT; |
| |
| /* If the class has no ivars, instanceStart should be set to the superclass's |
| instanceSize */ |
| instanceStart = UOBJC_V2_INSTANCE_VARIABLES_decl ? int_byte_position (firstIvar) : instanceSize; |
| |
| decl = start_var_decl (objc_v2_class_ro_template, |
| newabi_append_ro (IDENTIFIER_POINTER |
| (DECL_NAME (UOBJC_V2_CLASS_decl)))); |
| |
| /* APPLE LOCAL begin radar 4695101 */ |
| ivarLayout = objc_build_ivar_layout (true); |
| weakIvarLayout = objc_build_ivar_layout (false); |
| /* APPLE LOCAL end radar 4695101 */ |
| |
| initlist = build_class_ro_t_initializer (TREE_TYPE (decl), |
| name_expr, |
| (flags | cls_flags), instanceStart, instanceSize, |
| ivarLayout, UOBJC_V2_INSTANCE_METHODS_decl, protocol_decl, |
| UOBJC_V2_INSTANCE_VARIABLES_decl, |
| /* APPLE LOCAL radar 4695101 */ |
| weakIvarLayout, |
| UOBJC_V2_PROPERTY_decl); |
| finish_var_decl (decl, initlist); |
| |
| /* static struct class_t _OBJC_ACLASS_Foo = { ... }; */ |
| initlist = build_class_t_initializer (TREE_TYPE (class_decl), |
| build_fold_addr_expr (metaclass_decl), |
| class_superclass_expr, |
| build_fold_addr_expr (decl), |
| build_fold_addr_expr (UOBJC_V2_CACHE_decl), |
| build_fold_addr_expr (UOBJC_V2_VTABLE_decl)); |
| |
| finish_var_decl (class_decl, initlist); |
| objc_add_to_class_list_chain (class_decl); |
| if (CLASS_OR_CATEGORY_HAS_LOAD_IMPL (objc_implementation_context) != NULL_TREE) |
| objc_add_to_nonlazy_class_list_chain (class_decl); |
| /* APPLE LOCAL begin radar 5008110 */ |
| if (flag_objc_zerocost_exceptions && (flags & 0x20)) |
| objc2_build_ehtype_var_decl (CLASS_NAME (implementation_template), |
| false, false); |
| /* APPLE LOCAL end radar 5008110 */ |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* static struct objc_class _OBJC_METACLASS_Foo={ ... }; |
| static struct objc_class _OBJC_CLASS_Foo={ ... }; */ |
| |
| static void |
| /* APPLE LOCAL mainline */ |
| generate_shared_structures (int cls_flags) |
| { |
| tree sc_spec, decl_specs, decl; |
| tree name_expr, super_expr, root_expr; |
| tree my_root_id = NULL_TREE, my_super_id = NULL_TREE; |
| tree cast_type, initlist, protocol_decl; |
| /* APPLE LOCAL begin radar 5142207 */ |
| const char *visibility = objc_class_visibility (implementation_template); |
| int hidden_flag = (visibility && strcmp (visibility, "hidden") == 0) ? CLS_HIDDEN : 0; |
| /* APPLE LOCAL end radar 5142207 */ |
| |
| my_super_id = CLASS_SUPER_NAME (implementation_template); |
| if (my_super_id) |
| { |
| add_class_reference (my_super_id); |
| |
| /* Compute "my_root_id" - this is required for code generation. |
| the "isa" for all meta class structures points to the root of |
| the inheritance hierarchy (e.g. "__Object")... */ |
| my_root_id = my_super_id; |
| do |
| { |
| tree my_root_int = lookup_interface (my_root_id); |
| |
| if (my_root_int && CLASS_SUPER_NAME (my_root_int)) |
| my_root_id = CLASS_SUPER_NAME (my_root_int); |
| else |
| break; |
| } |
| while (1); |
| } |
| else |
| /* No super class. */ |
| my_root_id = CLASS_NAME (implementation_template); |
| |
| cast_type = build_pointer_type (objc_class_template); |
| name_expr = add_objc_string (CLASS_NAME (implementation_template), |
| class_names); |
| |
| /* Install class `isa' and `super' pointers at runtime. */ |
| if (my_super_id) |
| { |
| super_expr = add_objc_string (my_super_id, class_names); |
| super_expr = build_c_cast (cast_type, super_expr); /* cast! */ |
| } |
| else |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| { |
| super_expr = convert (string_type_node, |
| build_int_cst (NULL_TREE, 0)); |
| super_expr = build_c_cast (cast_type, super_expr); /* cast! */ |
| } |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| root_expr = add_objc_string (my_root_id, class_names); |
| root_expr = build_c_cast (cast_type, root_expr); /* cast! */ |
| |
| if (CLASS_PROTOCOL_LIST (implementation_template)) |
| { |
| generate_protocol_references |
| (CLASS_PROTOCOL_LIST (implementation_template)); |
| protocol_decl = generate_protocol_list (implementation_template); |
| } |
| else |
| protocol_decl = 0; |
| |
| /* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */ |
| |
| sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]); |
| decl_specs = tree_cons (NULL_TREE, objc_class_template, sc_spec); |
| |
| /* APPLE LOCAL begin radar 4349690 */ |
| decl = update_var_decl (UOBJC_METACLASS_decl); |
| /* APPLE LOCAL end radar 4349690 */ |
| |
| initlist |
| = build_shared_structure_initializer |
| (TREE_TYPE (decl), |
| root_expr, super_expr, name_expr, |
| convert (integer_type_node, TYPE_SIZE_UNIT (objc_class_template)), |
| /* APPLE LOCAL radar 5142207 */ |
| CLS_META | hidden_flag, |
| UOBJC_CLASS_METHODS_decl, |
| UOBJC_CLASS_VARIABLES_decl, |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| protocol_decl, NULL_TREE); |
| |
| finish_var_decl (decl, initlist); |
| |
| /* static struct objc_class _OBJC_CLASS_Foo={ ... }; */ |
| |
| /* APPLE LOCAL begin radar 4349690 */ |
| decl = update_var_decl (UOBJC_CLASS_decl); |
| /* APPLE LOCAL end radar 4349690 */ |
| |
| initlist |
| = build_shared_structure_initializer |
| (TREE_TYPE (decl), |
| build_unary_op (ADDR_EXPR, UOBJC_METACLASS_decl, 0), |
| super_expr, name_expr, |
| convert (integer_type_node, |
| TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE |
| (implementation_template))), |
| /* APPLE LOCAL mainline */ |
| /* APPLE LOCAL radar 5142207 */ |
| CLS_FACTORY | hidden_flag | cls_flags, |
| UOBJC_INSTANCE_METHODS_decl, |
| UOBJC_INSTANCE_VARIABLES_decl, |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| protocol_decl, UOBJC_CLASS_EXT_decl); |
| |
| finish_var_decl (decl, initlist); |
| } |
| |
| |
| static const char * |
| synth_id_with_class_suffix (const char *preamble, tree ctxt) |
| { |
| static char string[BUFSIZE]; |
| |
| if (TREE_CODE (ctxt) == CLASS_IMPLEMENTATION_TYPE |
| || TREE_CODE (ctxt) == CLASS_INTERFACE_TYPE) |
| { |
| sprintf (string, "%s_%s", preamble, |
| IDENTIFIER_POINTER (CLASS_NAME (ctxt))); |
| } |
| else if (TREE_CODE (ctxt) == CATEGORY_IMPLEMENTATION_TYPE |
| || TREE_CODE (ctxt) == CATEGORY_INTERFACE_TYPE) |
| { |
| /* We have a category. */ |
| const char *const class_name |
| = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)); |
| const char *const class_super_name |
| = IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)); |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| sprintf (string, "%s_%s_$_%s", preamble, class_name, class_super_name); |
| else |
| sprintf (string, "%s_%s_%s", preamble, class_name, class_super_name); |
| /* APPLE LOCAL end ObjC abi v2 */ |
| } |
| else if (TREE_CODE (ctxt) == PROTOCOL_INTERFACE_TYPE) |
| { |
| const char *protocol_name = IDENTIFIER_POINTER (PROTOCOL_NAME (ctxt)); |
| sprintf (string, "%s_%s", preamble, protocol_name); |
| } |
| else |
| abort (); |
| |
| return string; |
| } |
| |
| /* If type is empty or only type qualifiers are present, add default |
| type of id (otherwise grokdeclarator will default to int). */ |
| |
| static tree |
| adjust_type_for_id_default (tree type) |
| { |
| if (!type) |
| type = make_node (TREE_LIST); |
| |
| if (!TREE_VALUE (type)) |
| TREE_VALUE (type) = objc_object_type; |
| else if (TREE_CODE (TREE_VALUE (type)) == RECORD_TYPE |
| && TYPED_OBJECT (TREE_VALUE (type))) |
| error ("can not use an object as parameter to a method"); |
| |
| return type; |
| } |
| |
| /* Usage: |
| keyworddecl: |
| selector ':' '(' typename ')' identifier |
| |
| Purpose: |
| Transform an Objective-C keyword argument into |
| the C equivalent parameter declarator. |
| |
| In: key_name, an "identifier_node" (optional). |
| arg_type, a "tree_list" (optional). |
| arg_name, an "identifier_node". |
| |
| Note: It would be really nice to strongly type the preceding |
| arguments in the function prototype; however, then I |
| could not use the "accessor" macros defined in "tree.h". |
| |
| Out: an instance of "keyword_decl". */ |
| |
| tree |
| objc_build_keyword_decl (tree key_name, tree arg_type, tree arg_name) |
| { |
| tree keyword_decl; |
| |
| /* If no type is specified, default to "id". */ |
| arg_type = adjust_type_for_id_default (arg_type); |
| |
| keyword_decl = make_node (KEYWORD_DECL); |
| |
| TREE_TYPE (keyword_decl) = arg_type; |
| KEYWORD_ARG_NAME (keyword_decl) = arg_name; |
| KEYWORD_KEY_NAME (keyword_decl) = key_name; |
| |
| return keyword_decl; |
| } |
| |
| /* Given a chain of keyword_decl's, synthesize the full keyword selector. */ |
| |
| static tree |
| build_keyword_selector (tree selector) |
| { |
| int len = 0; |
| tree key_chain, key_name; |
| char *buf; |
| |
| /* Scan the selector to see how much space we'll need. */ |
| for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain)) |
| { |
| if (TREE_CODE (selector) == KEYWORD_DECL) |
| key_name = KEYWORD_KEY_NAME (key_chain); |
| else if (TREE_CODE (selector) == TREE_LIST) |
| key_name = TREE_PURPOSE (key_chain); |
| else |
| abort (); |
| |
| if (key_name) |
| len += IDENTIFIER_LENGTH (key_name) + 1; |
| else |
| /* Just a ':' arg. */ |
| len++; |
| } |
| |
| buf = (char *) alloca (len + 1); |
| /* Start the buffer out as an empty string. */ |
| buf[0] = '\0'; |
| |
| for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain)) |
| { |
| if (TREE_CODE (selector) == KEYWORD_DECL) |
| key_name = KEYWORD_KEY_NAME (key_chain); |
| else if (TREE_CODE (selector) == TREE_LIST) |
| { |
| key_name = TREE_PURPOSE (key_chain); |
| /* The keyword decl chain will later be used as a function argument |
| chain. Unhook the selector itself so as to not confuse other |
| parts of the compiler. */ |
| TREE_PURPOSE (key_chain) = NULL_TREE; |
| } |
| else |
| abort (); |
| |
| if (key_name) |
| strcat (buf, IDENTIFIER_POINTER (key_name)); |
| strcat (buf, ":"); |
| } |
| |
| return get_identifier (buf); |
| } |
| |
| /* Used for declarations and definitions. */ |
| |
| static tree |
| build_method_decl (enum tree_code code, tree ret_type, tree selector, |
| tree add_args) |
| { |
| tree method_decl; |
| |
| /* If no type is specified, default to "id". */ |
| ret_type = adjust_type_for_id_default (ret_type); |
| |
| method_decl = make_node (code); |
| TREE_TYPE (method_decl) = ret_type; |
| |
| /* If we have a keyword selector, create an identifier_node that |
| represents the full selector name (`:' included)... */ |
| if (TREE_CODE (selector) == KEYWORD_DECL) |
| { |
| METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector); |
| METHOD_SEL_ARGS (method_decl) = selector; |
| METHOD_ADD_ARGS (method_decl) = add_args; |
| } |
| else |
| { |
| METHOD_SEL_NAME (method_decl) = selector; |
| METHOD_SEL_ARGS (method_decl) = NULL_TREE; |
| METHOD_ADD_ARGS (method_decl) = NULL_TREE; |
| } |
| |
| return method_decl; |
| } |
| |
| #define METHOD_DEF 0 |
| #define METHOD_REF 1 |
| |
| /* APPLE LOCAL begin radar 3803157 - objc attribute */ |
| /* APPLE LOCAL begin radar 4529765 */ |
| /* This routine is called for a "format" attribute. It adds the number of |
| hidden argument ('2') to the format's 2nd and 3rd argument to compensate |
| for these two arguments. This is to make rest of the "format" attribute |
| processing done in the middle-end to work seemlessly. */ |
| |
| static tree |
| objc_delta_format_args (tree format) |
| { |
| tree format_num_expr, first_arg_num_expr; |
| int val; |
| tree args = TREE_VALUE (format); |
| gcc_assert (TREE_CHAIN (args) && TREE_CHAIN (TREE_CHAIN (args))); |
| format_num_expr = TREE_VALUE (TREE_CHAIN (args)); |
| first_arg_num_expr = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (args))); |
| if (format_num_expr && TREE_CODE (format_num_expr) == INTEGER_CST) |
| { |
| val = TREE_INT_CST_LOW (format_num_expr); |
| TREE_VALUE (TREE_CHAIN (args)) = build_int_cst (NULL_TREE, val+2); |
| } |
| if (first_arg_num_expr && TREE_CODE (first_arg_num_expr) == INTEGER_CST) |
| { |
| val = TREE_INT_CST_LOW (first_arg_num_expr); |
| TREE_VALUE (TREE_CHAIN (TREE_CHAIN (args))) = build_int_cst (NULL_TREE, val+2); |
| } |
| return format; |
| } |
| |
| /* This routine recognizes objc legal attributes. In case of "format" |
| attribute, it calls objc_delta_format_args to compensate for hidden |
| argument objc passes to its messaging call. */ |
| static bool |
| objc_any_recognized_attribute (tree attributes) |
| { |
| tree chain; |
| bool res = false; |
| if (!attributes) |
| return res; |
| for (chain = attributes; chain; chain = TREE_CHAIN (chain)) |
| { |
| if (is_attribute_p ("format", TREE_PURPOSE (chain))) |
| { |
| chain = objc_delta_format_args (chain); |
| return true; |
| } |
| else if (is_attribute_p ("sentinel", TREE_PURPOSE (chain))) |
| res = true; |
| } |
| return res; |
| } |
| /* APPLE LOCAL end radar 4529765 */ |
| /* This routine processes objective-c method attributes. */ |
| |
| static void |
| objc_decl_method_attributes (tree *node, tree attributes, int flags) |
| { |
| /* APPLE LOCAL radar 4529765 */ |
| if (objc_any_recognized_attribute (attributes)) |
| { |
| /* hackery to make an obj method look like a function type. */ |
| tree rettype = TREE_TYPE (*node); |
| TREE_TYPE (*node) = build_function_type (TREE_VALUE (rettype), |
| get_arg_type_list (*node, METHOD_REF, 0)); |
| decl_attributes (node, attributes, flags); |
| METHOD_TYPE_ATTRIBUTES (*node) = TYPE_ATTRIBUTES (TREE_TYPE (*node)); |
| TREE_TYPE (*node) = rettype; |
| } |
| else |
| decl_attributes (node, attributes, flags); |
| } |
| /* APPLE LOCAL end radar 3803157 - objc attribute */ |
| |
| /* Used by `build_objc_method_call' and `comp_proto_with_proto'. Return |
| an argument list for method METH. CONTEXT is either METHOD_DEF or |
| METHOD_REF, saying whether we are trying to define a method or call |
| one. SUPERFLAG says this is for a send to super; this makes a |
| difference for the NeXT calling sequence in which the lookup and |
| the method call are done together. If METH is null, user-defined |
| arguments (i.e., beyond self and _cmd) shall be represented by `...'. */ |
| |
| static tree |
| get_arg_type_list (tree meth, int context, int superflag) |
| { |
| tree arglist, akey; |
| |
| /* Receiver type. */ |
| if (flag_next_runtime && superflag) |
| arglist = build_tree_list (NULL_TREE, objc_super_type); |
| else if (context == METHOD_DEF && TREE_CODE (meth) == INSTANCE_METHOD_DECL) |
| arglist = build_tree_list (NULL_TREE, objc_instance_type); |
| else |
| arglist = build_tree_list (NULL_TREE, objc_object_type); |
| |
| /* Selector type - will eventually change to `int'. */ |
| /* APPLE LOCAL begin ObjC new abi */ |
| chainon (arglist, build_tree_list (NULL_TREE, flag_objc_abi == 2 |
| ? (superflag |
| ? objc_v2_super_selector_type |
| : objc_v2_selector_type) |
| : objc_selector_type)); |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* No actual method prototype given -- assume that remaining arguments |
| are `...'. */ |
| if (!meth) |
| return arglist; |
| |
| /* Build a list of argument types. */ |
| for (akey = METHOD_SEL_ARGS (meth); akey; akey = TREE_CHAIN (akey)) |
| { |
| tree arg_type = TREE_VALUE (TREE_TYPE (akey)); |
| |
| /* APPLE LOCAL begin 4209854 */ |
| /* Decay argument types for the underlying C function as appropriate. */ |
| arg_type = objc_decay_parm_type (arg_type); |
| /* APPLE LOCAL end 4209854 */ |
| |
| chainon (arglist, build_tree_list (NULL_TREE, arg_type)); |
| } |
| |
| if (METHOD_ADD_ARGS (meth)) |
| { |
| for (akey = TREE_CHAIN (METHOD_ADD_ARGS (meth)); |
| akey; akey = TREE_CHAIN (akey)) |
| { |
| tree arg_type = TREE_TYPE (TREE_VALUE (akey)); |
| |
| /* APPLE LOCAL begin 4209854 */ |
| arg_type = objc_decay_parm_type (arg_type); |
| |
| /* APPLE LOCAL end 4209854 */ |
| chainon (arglist, build_tree_list (NULL_TREE, arg_type)); |
| } |
| |
| if (!TREE_OVERFLOW (METHOD_ADD_ARGS (meth))) |
| goto lack_of_ellipsis; |
| } |
| else |
| { |
| lack_of_ellipsis: |
| chainon (arglist, OBJC_VOID_AT_END); |
| } |
| |
| return arglist; |
| } |
| |
| static tree |
| check_duplicates (hash hsh, int methods, int is_class) |
| { |
| tree meth = NULL_TREE; |
| |
| if (hsh) |
| { |
| meth = hsh->key; |
| |
| if (hsh->list) |
| { |
| /* We have two or more methods with the same name but |
| different types. */ |
| attr loop; |
| |
| /* APPLE LOCAL begin mainline */ |
| /* But just how different are those types? If |
| -Wno-strict-selector-match is specified, we shall not complain |
| if the differences are solely among types with identical |
| size and alignment. */ |
| if (!warn_strict_selector_match) |
| { |
| for (loop = hsh->list; loop; loop = loop->next) |
| if (!comp_proto_with_proto (meth, loop->value, 0)) |
| goto issue_warning; |
| |
| return meth; |
| } |
| |
| issue_warning: |
| /* APPLE LOCAL end mainline */ |
| warning ("multiple %s named %<%c%s%> found", |
| methods ? "methods" : "selectors", |
| (is_class ? '+' : '-'), |
| IDENTIFIER_POINTER (METHOD_SEL_NAME (meth))); |
| |
| warn_with_method (methods ? "using" : "found", |
| ((TREE_CODE (meth) == INSTANCE_METHOD_DECL) |
| ? '-' |
| : '+'), |
| meth); |
| for (loop = hsh->list; loop; loop = loop->next) |
| warn_with_method ("also found", |
| ((TREE_CODE (loop->value) == INSTANCE_METHOD_DECL) |
| ? '-' |
| : '+'), |
| loop->value); |
| } |
| } |
| return meth; |
| } |
| |
| /* If RECEIVER is a class reference, return the identifier node for |
| the referenced class. RECEIVER is created by objc_get_class_reference, |
| so we check the exact form created depending on which runtimes are |
| used. */ |
| |
| static tree |
| receiver_is_class_object (tree receiver, int self, int super) |
| { |
| tree chain, exp, arg; |
| |
| /* The receiver is 'self' or 'super' in the context of a class method. */ |
| if (objc_method_context |
| && TREE_CODE (objc_method_context) == CLASS_METHOD_DECL |
| && (self || super)) |
| return (super |
| ? CLASS_SUPER_NAME (implementation_template) |
| : CLASS_NAME (implementation_template)); |
| |
| if (flag_next_runtime) |
| { |
| /* The receiver is a variable created by |
| build_class_reference_decl. */ |
| if (TREE_CODE (receiver) == VAR_DECL && IS_CLASS (TREE_TYPE (receiver))) |
| /* Look up the identifier. */ |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| for (chain = (flag_objc_abi == 2) |
| ? classlist_ref_chain |
| : cls_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| /* APPLE LOCAL end ObjC abi v2 */ |
| if (TREE_PURPOSE (chain) == receiver) |
| return TREE_VALUE (chain); |
| } |
| |
| /* The receiver is a function call that returns an id. Check if |
| it is a call to objc_getClass, if so, pick up the class name. */ |
| if (TREE_CODE (receiver) == CALL_EXPR |
| && (exp = TREE_OPERAND (receiver, 0)) |
| && TREE_CODE (exp) == ADDR_EXPR |
| && (exp = TREE_OPERAND (exp, 0)) |
| && TREE_CODE (exp) == FUNCTION_DECL |
| /* For some reason, we sometimes wind up with multiple FUNCTION_DECL |
| prototypes for objc_get_class(). Thankfully, they seem to share the |
| same function type. */ |
| && TREE_TYPE (exp) == TREE_TYPE (objc_get_class_decl) |
| && !strcmp (IDENTIFIER_POINTER (DECL_NAME (exp)), TAG_GETCLASS) |
| /* We have a call to objc_get_class/objc_getClass! */ |
| && (arg = TREE_OPERAND (receiver, 1)) |
| && TREE_CODE (arg) == TREE_LIST |
| && (arg = TREE_VALUE (arg))) |
| { |
| STRIP_NOPS (arg); |
| if (TREE_CODE (arg) == ADDR_EXPR |
| && (arg = TREE_OPERAND (arg, 0)) |
| && TREE_CODE (arg) == STRING_CST) |
| /* Finally, we have the class name. */ |
| return get_identifier (TREE_STRING_POINTER (arg)); |
| } |
| return 0; |
| } |
| |
| /* If we are currently building a message expr, this holds |
| the identifier of the selector of the message. This is |
| used when printing warnings about argument mismatches. */ |
| |
| static tree current_objc_message_selector = 0; |
| |
| tree |
| objc_message_selector (void) |
| { |
| return current_objc_message_selector; |
| } |
| |
| /* Construct an expression for sending a message. |
| MESS has the object to send to in TREE_PURPOSE |
| and the argument list (including selector) in TREE_VALUE. |
| |
| (*(<abstract_decl>(*)())_msg)(receiver, selTransTbl[n], ...); |
| (*(<abstract_decl>(*)())_msgSuper)(receiver, selTransTbl[n], ...); */ |
| |
| tree |
| objc_build_message_expr (tree mess) |
| { |
| tree receiver = TREE_PURPOSE (mess); |
| tree sel_name; |
| #ifdef OBJCPLUS |
| tree args = TREE_PURPOSE (TREE_VALUE (mess)); |
| #else |
| tree args = TREE_VALUE (mess); |
| #endif |
| tree method_params = NULL_TREE; |
| |
| /* APPLE LOCAL radar 4294425 */ |
| if (TREE_CODE (receiver) == ERROR_MARK || TREE_CODE (args) == ERROR_MARK) |
| return error_mark_node; |
| |
| /* Obtain the full selector name. */ |
| if (TREE_CODE (args) == IDENTIFIER_NODE) |
| /* A unary selector. */ |
| sel_name = args; |
| else if (TREE_CODE (args) == TREE_LIST) |
| sel_name = build_keyword_selector (args); |
| else |
| abort (); |
| |
| /* Build the parameter list to give to the method. */ |
| if (TREE_CODE (args) == TREE_LIST) |
| #ifdef OBJCPLUS |
| method_params = chainon (args, TREE_VALUE (TREE_VALUE (mess))); |
| #else |
| { |
| tree chain = args, prev = NULL_TREE; |
| |
| /* We have a keyword selector--check for comma expressions. */ |
| while (chain) |
| { |
| tree element = TREE_VALUE (chain); |
| |
| /* We have a comma expression, must collapse... */ |
| if (TREE_CODE (element) == TREE_LIST) |
| { |
| if (prev) |
| TREE_CHAIN (prev) = element; |
| else |
| args = element; |
| } |
| prev = chain; |
| chain = TREE_CHAIN (chain); |
| } |
| method_params = args; |
| } |
| #endif |
| |
| #ifdef OBJCPLUS |
| if (processing_template_decl) |
| /* Must wait until template instantiation time. */ |
| return build_min_nt (MESSAGE_SEND_EXPR, receiver, sel_name, |
| method_params); |
| #endif |
| |
| return objc_finish_message_expr (receiver, sel_name, method_params); |
| } |
| |
| /* Look up method SEL_NAME that would be suitable for receiver |
| of type 'id' (if IS_CLASS is zero) or 'Class' (if IS_CLASS is |
| nonzero), and report on any duplicates. */ |
| |
| static tree |
| lookup_method_in_hash_lists (tree sel_name, int is_class) |
| { |
| hash method_prototype = NULL; |
| |
| if (!is_class) |
| method_prototype = hash_lookup (nst_method_hash_list, |
| sel_name); |
| |
| if (!method_prototype) |
| { |
| method_prototype = hash_lookup (cls_method_hash_list, |
| sel_name); |
| is_class = 1; |
| } |
| |
| return check_duplicates (method_prototype, 1, is_class); |
| } |
| |
| /* The 'objc_finish_message_expr' routine is called from within |
| 'objc_build_message_expr' for non-template functions. In the case of |
| C++ template functions, it is called from 'build_expr_from_tree' |
| (in decl2.c) after RECEIVER and METHOD_PARAMS have been expanded. */ |
| |
| tree |
| objc_finish_message_expr (tree receiver, tree sel_name, tree method_params) |
| { |
| tree method_prototype = NULL_TREE, rprotos = NULL_TREE, rtype; |
| tree selector, retval, class_tree; |
| int self, super, have_cast; |
| /* APPLE LOCAL radar 4547918 */ |
| bool forward_class = false; |
| |
| /* APPLE LOCAL begin radar 4180592 */ |
| if (receiver == error_mark_node || TREE_TYPE (receiver) == error_mark_node) |
| return receiver; |
| /* APPLE LOCAL end radar 4180592 */ |
| /* Extract the receiver of the message, as well as its type |
| (where the latter may take the form of a cast or be inferred |
| from the implementation context). */ |
| /* APPLE LOCAL begin radar 4653319 */ |
| rtype = objc_get_inner_exp (receiver); |
| /* APPLE LOCAL end radar 4653319 */ |
| self = (rtype == self_decl); |
| super = (rtype == UOBJC_SUPER_decl); |
| rtype = TREE_TYPE (receiver); |
| have_cast = (TREE_CODE (receiver) == NOP_EXPR |
| || (TREE_CODE (receiver) == COMPOUND_EXPR |
| && !IS_SUPER (rtype))); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* If we are calling [super dealloc], reset our warning flag. */ |
| if (super && !strcmp ("dealloc", IDENTIFIER_POINTER (sel_name))) |
| should_call_super_dealloc = 0; |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4757423 */ |
| /* If we are calling [super finalize], reset our warning flag. */ |
| if (super && !strcmp ("finalize", IDENTIFIER_POINTER (sel_name))) |
| should_call_super_finalize = 0; |
| /* APPLE LOCAL end radar 4757423 */ |
| |
| /* If the receiver is a class object, retrieve the corresponding |
| @interface, if one exists. */ |
| class_tree = receiver_is_class_object (receiver, self, super); |
| |
| /* Now determine the receiver type (if an explicit cast has not been |
| provided). */ |
| if (!have_cast) |
| { |
| if (class_tree) |
| /* APPLE LOCAL begin radar 4547918 */ |
| { |
| rtype = lookup_interface (class_tree); |
| forward_class = !rtype; |
| } |
| /* APPLE LOCAL end radar 4547918 */ |
| /* Handle `self' and `super'. */ |
| else if (super) |
| { |
| if (!CLASS_SUPER_NAME (implementation_template)) |
| { |
| error ("no super class declared in @interface for %qs", |
| IDENTIFIER_POINTER (CLASS_NAME (implementation_template))); |
| return error_mark_node; |
| } |
| rtype = lookup_interface (CLASS_SUPER_NAME (implementation_template)); |
| } |
| else if (self) |
| rtype = lookup_interface (CLASS_NAME (implementation_template)); |
| } |
| |
| /* If receiver is of type `id' or `Class' (or if the @interface for a |
| class is not visible), we shall be satisfied with the existence of |
| any instance or class method. */ |
| /* APPLE LOCAL begin mainline */ |
| if (objc_is_id (rtype)) |
| { |
| class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE); |
| rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype)) |
| ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype)) |
| : NULL_TREE); |
| rtype = NULL_TREE; |
| /* APPLE LOCAL end mainline */ |
| |
| if (rprotos) |
| { |
| /* If messaging 'id <Protos>' or 'Class <Proto>', first search |
| in protocols themselves for the method prototype. */ |
| method_prototype |
| = lookup_method_in_protocol_list (rprotos, sel_name, |
| class_tree != NULL_TREE); |
| |
| /* If messaging 'Class <Proto>' but did not find a class method |
| prototype, search for an instance method instead, and warn |
| about having done so. */ |
| if (!method_prototype && !rtype && class_tree != NULL_TREE) |
| { |
| method_prototype |
| = lookup_method_in_protocol_list (rprotos, sel_name, 0); |
| |
| if (method_prototype) |
| warning ("found %<-%s%> instead of %<+%s%> in protocol(s)", |
| IDENTIFIER_POINTER (sel_name), |
| IDENTIFIER_POINTER (sel_name)); |
| } |
| } |
| } |
| /* APPLE LOCAL mainline */ |
| else if (rtype) |
| { |
| tree orig_rtype = rtype, saved_rtype; |
| |
| if (TREE_CODE (rtype) == POINTER_TYPE) |
| rtype = TREE_TYPE (rtype); |
| /* Traverse typedef aliases */ |
| while (TREE_CODE (rtype) == RECORD_TYPE && OBJC_TYPE_NAME (rtype) |
| && TREE_CODE (OBJC_TYPE_NAME (rtype)) == TYPE_DECL |
| && DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype))) |
| rtype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype)); |
| saved_rtype = rtype; |
| if (TYPED_OBJECT (rtype)) |
| { |
| rprotos = TYPE_OBJC_PROTOCOL_LIST (rtype); |
| rtype = TYPE_OBJC_INTERFACE (rtype); |
| } |
| /* If we could not find an @interface declaration, we must have |
| only seen a @class declaration; so, we cannot say anything |
| more intelligent about which methods the receiver will |
| understand. */ |
| if (!rtype || TREE_CODE (rtype) == IDENTIFIER_NODE) |
| /* APPLE LOCAL begin radar 4457381 */ |
| { |
| /* APPLE LOCAL mainline */ |
| rtype = NULL_TREE; |
| /* We could not find an @interface declaration, yet Message maybe in a |
| @class's protocol. */ |
| if (!method_prototype && rprotos) |
| method_prototype |
| = lookup_method_in_protocol_list (rprotos, sel_name, 0); |
| } |
| /* APPLE LOCAL end radar 4457381 */ |
| else if (TREE_CODE (rtype) == CLASS_INTERFACE_TYPE |
| || TREE_CODE (rtype) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| /* We have a valid ObjC class name. Look up the method name |
| in the published @interface for the class (and its |
| superclasses). */ |
| method_prototype |
| /* APPLE LOCAL objc new property */ |
| = lookup_method_static (rtype, sel_name, class_tree != NULL_TREE, false); |
| |
| /* If the method was not found in the @interface, it may still |
| exist locally as part of the @implementation. */ |
| if (!method_prototype && objc_implementation_context |
| && CLASS_NAME (objc_implementation_context) |
| == OBJC_TYPE_NAME (rtype)) |
| method_prototype |
| = lookup_method |
| ((class_tree |
| ? CLASS_CLS_METHODS (objc_implementation_context) |
| : CLASS_NST_METHODS (objc_implementation_context)), |
| sel_name); |
| |
| /* If we haven't found a candidate method by now, try looking for |
| it in the protocol list. */ |
| if (!method_prototype && rprotos) |
| method_prototype |
| = lookup_method_in_protocol_list (rprotos, sel_name, |
| class_tree != NULL_TREE); |
| } |
| else |
| { |
| warning ("invalid receiver type %qs", |
| gen_type_name (orig_rtype)); |
| /* After issuing the "invalid receiver" warning, perform method |
| lookup as if we were messaging 'id'. */ |
| rtype = rprotos = NULL_TREE; |
| } |
| } |
| |
| |
| /* For 'id' or 'Class' receivers, search in the global hash table |
| as a last resort. For all receivers, warn if protocol searches |
| have failed. */ |
| if (!method_prototype) |
| { |
| if (rprotos) |
| warning ("%<%c%s%> not found in protocol(s)", |
| (class_tree ? '+' : '-'), |
| IDENTIFIER_POINTER (sel_name)); |
| |
| if (!rtype) |
| /* APPLE LOCAL begin radar 4547918 */ |
| { |
| method_prototype |
| = lookup_method_in_hash_lists (sel_name, class_tree != NULL_TREE); |
| if (forward_class && method_prototype) |
| warning ("receiver %qs is a forward class and corresponding @interface may not exist", |
| IDENTIFIER_POINTER (class_tree)); |
| } |
| /* APPLE LOCAL end radar 4547918 */ |
| } |
| |
| /* APPLE LOCAL begin radar 4506893 */ |
| /* APPLE LOCAL begin objc new property */ |
| if (!method_prototype && in_objc_property_setter_name_context) |
| { |
| if (flag_objc_new_property) |
| error ("object cannot be set - either readonly property or no setter found"); |
| else |
| error ("readonly property can not be set"); |
| } |
| /* APPLE LOCAL end objc new property */ |
| else if (!method_prototype) |
| /* APPLE LOCAL end radar 4506893 */ |
| { |
| static bool warn_missing_methods = false; |
| |
| if (rtype) |
| warning ("%qs may not respond to %<%c%s%>", |
| IDENTIFIER_POINTER (OBJC_TYPE_NAME (rtype)), |
| (class_tree ? '+' : '-'), |
| IDENTIFIER_POINTER (sel_name)); |
| /* If we are messaging an 'id' or 'Class' object and made it here, |
| then we have failed to find _any_ instance or class method, |
| respectively. */ |
| else |
| warning ("no %<%c%s%> method found", |
| (class_tree ? '+' : '-'), |
| IDENTIFIER_POINTER (sel_name)); |
| |
| if (!warn_missing_methods) |
| { |
| warning ("(Messages without a matching method signature"); |
| warning ("will be assumed to return %<id%> and accept"); |
| warning ("%<...%> as arguments.)"); |
| warn_missing_methods = true; |
| } |
| } |
| |
| /* Save the selector name for printing error messages. */ |
| current_objc_message_selector = sel_name; |
| |
| /* Build the parameters list for looking up the method. |
| These are the object itself and the selector. */ |
| |
| /* APPLE LOCAL ObjC new abi */ |
| /* Code moved down */ |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| tree ret_type; |
| tree message_func_decl; |
| bool check_for_nil = flag_objc_nilcheck; |
| |
| ret_type = (method_prototype ? |
| TREE_VALUE (TREE_TYPE (method_prototype)) : |
| objc_object_type); |
| |
| /* Do we need to check for nil receivers ? */ |
| /* For now, message sent to classes need no nil check. In future, class |
| declaration marked as weak_import must be nil checked. */ |
| if (super |
| || (TREE_CODE (receiver) == VAR_DECL |
| && TREE_TYPE (receiver) == objc_class_type)) |
| check_for_nil = false; |
| |
| /* LLVM LOCAL pr 1654 */ |
| if (aggregate_value_p (ret_type, 0)) |
| { |
| if (super) |
| message_func_decl = umsg_id_super2_stret_fixup_decl; |
| else |
| message_func_decl = objc_is_id (rtype) |
| ? umsg_id_stret_fixup_decl |
| : umsg_stret_fixup_decl; |
| } |
| else |
| { |
| if (super) |
| message_func_decl = umsg_id_super2_fixup_decl; |
| else |
| /* APPLE LOCAL begin radar 4557598 */ |
| { |
| if (objc_is_id (rtype)) |
| message_func_decl = umsg_id_fixup_decl; |
| else if (targetm.calls.objc_fpreturn_msgcall (ret_type, true)) |
| message_func_decl = umsg_fixup_decl; |
| else if (targetm.calls.objc_fpreturn_msgcall (ret_type, false)) |
| message_func_decl = umsg_fpret_fixup_decl; |
| else |
| message_func_decl = umsg_fixup_decl; |
| } |
| /* APPLE LOCAL end radar 4557598 */ |
| } |
| |
| selector = build_selector_messenger_reference (sel_name, |
| message_func_decl); |
| |
| /* selector = &_msg; */ |
| selector = build_unary_op (ADDR_EXPR, selector, 0); |
| |
| selector = build_c_cast (super |
| ? objc_v2_super_selector_type |
| : objc_v2_selector_type, selector); |
| |
| /* (*_msg.messenger) (receiver, &_msg, ...); */ |
| retval = build_v2_build_objc_method_call (super, method_prototype, |
| receiver, selector, |
| method_params, |
| check_for_nil); |
| } |
| else |
| { |
| if (flag_typed_selectors) |
| selector = build_typed_selector_reference (sel_name, method_prototype); |
| else |
| /* APPLE LOCAL begin radar 4359757 */ |
| selector = flag_next_runtime |
| ? build_next_runtime_selector_reference (sel_name) |
| : build_selector_reference (sel_name); |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| retval = build_objc_method_call (super, method_prototype, |
| receiver, |
| selector, method_params); |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| current_objc_message_selector = 0; |
| |
| return retval; |
| } |
| |
| /* Build a tree expression to send OBJECT the operation SELECTOR, |
| looking up the method on object LOOKUP_OBJECT (often same as OBJECT), |
| assuming the method has prototype METHOD_PROTOTYPE. |
| (That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.) |
| Use METHOD_PARAMS as list of args to pass to the method. |
| If SUPER_FLAG is nonzero, we look up the superclass's method. */ |
| |
| static tree |
| build_objc_method_call (int super_flag, tree method_prototype, |
| tree lookup_object, tree selector, |
| tree method_params) |
| { |
| tree sender = (super_flag ? umsg_super_decl : |
| (!flag_next_runtime || flag_nil_receivers |
| /* APPLE LOCAL begin mainline */ |
| /* APPLE LOCAL begin radar 4590221 */ |
| ? umsg_decl |
| /* APPLE LOCAL end radar 4590221 */ |
| /* APPLE LOCAL end mainline */ |
| : umsg_nonnil_decl)); |
| tree rcv_p = (super_flag ? objc_super_type : objc_object_type); |
| |
| /* If a prototype for the method to be called exists, then cast |
| the sender's return type and arguments to match that of the method. |
| Otherwise, leave sender as is. */ |
| tree ret_type |
| = (method_prototype |
| ? TREE_VALUE (TREE_TYPE (method_prototype)) |
| : objc_object_type); |
| /* APPLE LOCAL begin radar 3803157 - objc attribute */ |
| tree method_param_types = get_arg_type_list (method_prototype, METHOD_REF, super_flag); |
| tree ftype = build_function_type (ret_type, method_param_types); |
| tree sender_cast; |
| tree method, t; |
| if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype)) |
| ftype = build_type_attribute_variant ( |
| ftype, METHOD_TYPE_ATTRIBUTES (method_prototype)); |
| |
| sender_cast = build_pointer_type (ftype); |
| |
| /* APPLE LOCAL begin radar 5005756 */ |
| /* If receiver has an 'id' type, then method selection happens at runtime. |
| It is misleading to issue warning on a method call not knowing which |
| method actually gets called; thus check for objc_is_id is added. */ |
| if (method_prototype && !objc_is_id (TREE_TYPE (lookup_object))) |
| { |
| if (TREE_DEPRECATED (method_prototype)) |
| warn_deprecated_use (method_prototype); |
| if (TREE_UNAVAILABLE (method_prototype)) |
| warn_unavailable_use (method_prototype); |
| } |
| /* APPLE LOCAL end radar 5005756 */ |
| lookup_object = build_c_cast (rcv_p, lookup_object); |
| /* APPLE LOCAL end radar 3803157 - objc attribute */ |
| |
| /* Use SAVE_EXPR to avoid evaluating the receiver twice. */ |
| lookup_object = save_expr (lookup_object); |
| |
| if (flag_next_runtime) |
| { |
| /* APPLE LOCAL begin radar 4491211 */ |
| #ifdef OBJCPLUS |
| complete_type (ret_type); |
| #endif |
| /* APPLE LOCAL end radar 4491211 */ |
| /* If we are returning a struct in memory, and the address |
| of that memory location is passed as a hidden first |
| argument, then change which messenger entry point this |
| expr will call. NB: Note that sender_cast remains |
| unchanged (it already has a struct return type). */ |
| /* LLVM LOCAL pr 1654 */ |
| if (aggregate_value_p (ret_type, 0)) |
| sender = (super_flag ? umsg_super_stret_decl : |
| flag_nil_receivers ? umsg_stret_decl : umsg_nonnil_stret_decl); |
| /* APPLE LOCAL begin radar 4280641 */ |
| else if (!super_flag && targetm.calls.objc_fpreturn_msgcall (ret_type, true)) |
| sender = umsg_decl; |
| else if (!super_flag && targetm.calls.objc_fpreturn_msgcall (ret_type, false)) |
| sender = umsg_fpret_decl; |
| /* APPLE LOCAL end radar 4280641 */ |
| |
| method_params = tree_cons (NULL_TREE, lookup_object, |
| tree_cons (NULL_TREE, selector, |
| method_params)); |
| method = build_fold_addr_expr (sender); |
| } |
| else |
| { |
| /* This is the portable (GNU) way. */ |
| tree object; |
| |
| /* First, call the lookup function to get a pointer to the method, |
| then cast the pointer, then call it with the method arguments. */ |
| |
| object = (super_flag ? self_decl : lookup_object); |
| |
| t = tree_cons (NULL_TREE, selector, NULL_TREE); |
| t = tree_cons (NULL_TREE, lookup_object, t); |
| method = build_function_call (sender, t); |
| |
| /* Pass the object to the method. */ |
| method_params = tree_cons (NULL_TREE, object, |
| tree_cons (NULL_TREE, selector, |
| method_params)); |
| } |
| |
| /* ??? Selector is not at this point something we can use inside |
| the compiler itself. Set it to garbage for the nonce. */ |
| t = build (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node); |
| return build_function_call (t, method_params); |
| } |
| |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| /* Build the new abi's messaging librrary call. It looks like: |
| (*_msg.messanger) (receiver, &_msg, ...) */ |
| |
| static tree |
| build_v2_build_objc_method_call (int super_flag, tree method_prototype, |
| tree lookup_object, tree selector, |
| tree method_params, |
| bool check_for_nil) |
| { |
| tree ret_val; |
| tree sender, rcv_p, t; |
| tree ret_type |
| = (method_prototype |
| ? TREE_VALUE (TREE_TYPE (method_prototype)) |
| : objc_object_type); |
| tree method_param_types = get_arg_type_list (method_prototype, |
| METHOD_REF, super_flag); |
| /* APPLE LOCAL begin radar 3803157 - objc attribute */ |
| tree ftype = build_function_type (ret_type, method_param_types); |
| tree sender_cast; |
| |
| if (method_prototype && METHOD_TYPE_ATTRIBUTES (method_prototype)) |
| ftype = build_type_attribute_variant ( |
| ftype, METHOD_TYPE_ATTRIBUTES (method_prototype)); |
| |
| sender_cast = build_pointer_type (ftype); |
| |
| /* APPLE LOCAL begin radar 5005756 */ |
| /* If receiver has an 'id' type, then method selection happens at runtime. |
| It is misleading to issue warning on a method call not knowing which |
| method actually gets called; thus check for objc_is_id is added. */ |
| if (method_prototype && !objc_is_id (TREE_TYPE (lookup_object))) |
| { |
| if (TREE_DEPRECATED (method_prototype)) |
| warn_deprecated_use (method_prototype); |
| if (TREE_UNAVAILABLE (method_prototype)) |
| warn_unavailable_use (method_prototype); |
| } |
| /* APPLE LOCAL end radar 5005756 */ |
| /* APPLE LOCAL end radar 3803157 - objc attribute */ |
| if (check_for_nil) |
| method_params = objc_copy_to_temp_side_effect_params (method_param_types, |
| method_params); |
| |
| /* Get &message_ref_t.messenger */ |
| sender = build_c_cast (build_pointer_type ( |
| super_flag |
| ? objc_v2_super_imp_type |
| : objc_v2_imp_type), selector); |
| |
| sender = build_indirect_ref (sender, "unary *"); |
| |
| rcv_p = (super_flag ? objc_super_type : objc_object_type); |
| |
| lookup_object = build_c_cast (rcv_p, lookup_object); |
| |
| /* Use SAVE_EXPR to avoid evaluating the receiver twice. */ |
| lookup_object = save_expr (lookup_object); |
| |
| method_params = tree_cons (NULL_TREE, lookup_object, |
| tree_cons (NULL_TREE, selector, |
| method_params)); |
| t = build (OBJ_TYPE_REF, sender_cast, sender, lookup_object, size_zero_node); |
| ret_val = build_function_call (t, method_params); |
| if (check_for_nil) |
| { |
| /* receiver != nil ? ret_val : 0 */ |
| tree ftree; |
| tree ifexp; |
| |
| if (TREE_CODE (ret_type) == RECORD_TYPE |
| || TREE_CODE (ret_type) == UNION_TYPE) |
| ftree = build_constructor (ret_type, NULL_TREE); |
| else |
| ftree = fold_convert (ret_type, integer_zero_node); |
| |
| ifexp = build_binary_op (NE_EXPR, |
| lookup_object, |
| fold_convert (rcv_p, integer_zero_node), 1); |
| |
| ret_val = build_conditional_expr (ifexp, ret_val, ftree); |
| |
| } |
| return ret_val; |
| } |
| |
| /* Declare variable which holds 'struct protocol_t' meta data. */ |
| /* APPLE LOCAL begin radar 4695109 */ |
| /* pointer to protocol metadata in new ABI protocol is now generated |
| like the old abi. */ |
| static void |
| build_v2_protocol_reference (tree p) |
| { |
| tree decl; |
| const char *proto_name; |
| |
| /* static struct protocol_t _OBJC_PROTOCOL_$<mumble>; */ |
| |
| proto_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL_$", p); |
| decl = start_var_decl (objc_v2_protocol_template, proto_name); |
| PROTOCOL_V2_FORWARD_DECL (p) = decl; |
| /* APPLE LOCAL begin - LLVM radar 5476262 */ |
| pushdecl_top_level(decl); |
| /* APPLE LOCAL end - LLVM radar 5476262 */ |
| } |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| /* Main routine to build all meta data for all protocols used in a translation unit. */ |
| |
| static void |
| generate_v2_protocols (void) |
| { |
| tree p, encoding; |
| tree decl; |
| tree initlist, protocol_name_expr, refs_decl, refs_expr; |
| |
| /* If a protocol was directly referenced, pull in indirect references. */ |
| for (p = protocol_chain; p; p = TREE_CHAIN (p)) |
| /* APPLE LOCAL begin radar 4695109 */ |
| if (PROTOCOL_V2_FORWARD_DECL (p) && PROTOCOL_LIST (p)) |
| generate_v2_protocol_references (PROTOCOL_LIST (p)); |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| for (p = protocol_chain; p; p = TREE_CHAIN (p)) |
| { |
| tree nst_methods = PROTOCOL_NST_METHODS (p); |
| tree cls_methods = PROTOCOL_CLS_METHODS (p); |
| |
| /* If protocol wasn't referenced, don't generate any code. */ |
| decl = PROTOCOL_V2_FORWARD_DECL (p); |
| |
| /* APPLE LOCAL radar 4695109 */ |
| if (!decl) |
| continue; |
| |
| /* Make sure we link in the Protocol class. */ |
| objc_v2_get_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); |
| |
| while (nst_methods) |
| { |
| if (! METHOD_ENCODING (nst_methods)) |
| { |
| encoding = encode_method_prototype (nst_methods); |
| METHOD_ENCODING (nst_methods) = encoding; |
| } |
| nst_methods = TREE_CHAIN (nst_methods); |
| } |
| |
| while (cls_methods) |
| { |
| if (! METHOD_ENCODING (cls_methods)) |
| { |
| encoding = encode_method_prototype (cls_methods); |
| METHOD_ENCODING (cls_methods) = encoding; |
| } |
| |
| cls_methods = TREE_CHAIN (cls_methods); |
| } |
| /* APPLE LOCAL begin radar 4695109 */ |
| generate_v2_method_descriptors (p, false); |
| |
| nst_methods = PROTOCOL_OPTIONAL_NST_METHODS (p); |
| while (nst_methods) |
| { |
| if (! METHOD_ENCODING (nst_methods)) |
| { |
| encoding = encode_method_prototype (nst_methods); |
| METHOD_ENCODING (nst_methods) = encoding; |
| } |
| nst_methods = TREE_CHAIN (nst_methods); |
| } |
| |
| cls_methods = PROTOCOL_OPTIONAL_CLS_METHODS (p); |
| while (cls_methods) |
| { |
| if (! METHOD_ENCODING (cls_methods)) |
| { |
| encoding = encode_method_prototype (cls_methods); |
| METHOD_ENCODING (cls_methods) = encoding; |
| } |
| |
| cls_methods = TREE_CHAIN (cls_methods); |
| } |
| |
| generate_v2_method_descriptors (p, true); |
| /* APPLE LOCAL end radar 4695109 */ |
| |
| if (PROTOCOL_LIST (p)) |
| refs_decl = generate_v2_protocol_list (p); |
| else |
| refs_decl = 0; |
| |
| /* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */ |
| protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names); |
| |
| if (refs_decl) |
| refs_expr = convert (build_pointer_type (objc_v2_protocol_template), |
| build_unary_op (ADDR_EXPR, refs_decl, 0)); |
| else |
| /* APPLE LOCAL LLVM - begin NUL pointer */ |
| refs_expr = |
| convert (build_pointer_type (objc_v2_protocol_template), |
| build_int_cst (NULL_TREE, 0)); |
| /* APPLE LOCAL LLVM - end NUL pointer */ |
| |
| /* APPLE LOCAL begin radar 4695101 */ |
| /* Build table of list of properties for this protocol. */ |
| objc_implementation_context = p; |
| generate_v2_property_tables (p); |
| /* UOBJC_V2_PROPERTY_decl points to table of properties for |
| this protocol. */ |
| /* APPLE LOCAL end radar 4695101 */ |
| |
| /* UOBJC_V2_INSTANCE_METHODS_decl/UOBJC_V2_CLASS_METHODS_decl are set |
| by generate_v2_method_descriptors, which is called above. */ |
| initlist = build_protocol_initializer (TREE_TYPE (decl), |
| protocol_name_expr, refs_expr, |
| UOBJC_V2_INSTANCE_METHODS_decl, |
| UOBJC_V2_CLASS_METHODS_decl, true, |
| /* APPLE LOCAL radar 4695101 */ |
| UOBJC_V2_PROPERTY_decl, |
| /* APPLE LOCAL begin radar 4695109 */ |
| UOBJC_PROTOCOL_OPT_NST_METHODS_decl, |
| UOBJC_PROTOCOL_OPT_CLS_METHODS_decl); |
| /* APPLE LOCAL end radar 4695109 */ |
| finish_var_decl (decl, initlist); |
| /* APPLE LOCAL radar 4533974 - ObjC new protocol */ |
| objc_add_to_protocol_list_chain (decl); |
| } |
| } |
| |
| static void |
| /* APPLE LOCAL end ObjC new abi */ |
| build_protocol_reference (tree p) |
| { |
| tree decl; |
| const char *proto_name; |
| |
| /* static struct _objc_protocol _OBJC_PROTOCOL_<mumble>; */ |
| |
| proto_name = synth_id_with_class_suffix ("_OBJC_PROTOCOL", p); |
| decl = start_var_decl (objc_protocol_template, proto_name); |
| |
| PROTOCOL_FORWARD_DECL (p) = decl; |
| } |
| |
| /* This function is called by the parser when (and only when) a |
| @protocol() expression is found, in order to compile it. */ |
| tree |
| objc_build_protocol_expr (tree protoname) |
| { |
| tree expr; |
| tree p = lookup_protocol (protoname); |
| |
| if (!p) |
| { |
| error ("cannot find protocol declaration for %qs", |
| IDENTIFIER_POINTER (protoname)); |
| return error_mark_node; |
| } |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ |
| if (!PROTOCOL_V2_FORWARD_DECL (p)) |
| build_v2_protocol_reference (p); |
| return objc_v2_get_protocol_reference (p); |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ |
| } |
| else |
| { |
| if (!PROTOCOL_FORWARD_DECL (p)) |
| build_protocol_reference (p); |
| |
| expr = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0); |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| |
| /* ??? Ideally we'd build the reference with objc_protocol_type directly, |
| if we have it, rather than converting it here. */ |
| expr = convert (objc_protocol_type, expr); |
| |
| /* The @protocol() expression is being compiled into a pointer to a |
| statically allocated instance of the Protocol class. To become |
| usable at runtime, the 'isa' pointer of the instance need to be |
| fixed up at runtime by the runtime library, to point to the |
| actual 'Protocol' class. */ |
| |
| /* For the GNU runtime, put the static Protocol instance in the list |
| of statically allocated instances, so that we make sure that its |
| 'isa' pointer is fixed up at runtime by the GNU runtime library |
| to point to the Protocol class (at runtime, when loading the |
| module, the GNU runtime library loops on the statically allocated |
| instances (as found in the defs field in objc_symtab) and fixups |
| all the 'isa' pointers of those objects). */ |
| if (! flag_next_runtime) |
| { |
| /* This type is a struct containing the fields of a Protocol |
| object. (Cfr. objc_protocol_type instead is the type of a pointer |
| to such a struct). */ |
| tree protocol_struct_type = xref_tag |
| (RECORD_TYPE, get_identifier (PROTOCOL_OBJECT_CLASS_NAME)); |
| tree *chain; |
| |
| /* Look for the list of Protocol statically allocated instances |
| to fixup at runtime. Create a new list to hold Protocol |
| statically allocated instances, if the list is not found. At |
| present there is only another list, holding NSConstantString |
| static instances to be fixed up at runtime. */ |
| for (chain = &objc_static_instances; |
| *chain && TREE_VALUE (*chain) != protocol_struct_type; |
| chain = &TREE_CHAIN (*chain)); |
| if (!*chain) |
| { |
| *chain = tree_cons (NULL_TREE, protocol_struct_type, NULL_TREE); |
| add_objc_string (OBJC_TYPE_NAME (protocol_struct_type), |
| class_names); |
| } |
| |
| /* Add this statically allocated instance to the Protocol list. */ |
| TREE_PURPOSE (*chain) = tree_cons (NULL_TREE, |
| PROTOCOL_FORWARD_DECL (p), |
| TREE_PURPOSE (*chain)); |
| } |
| |
| |
| return expr; |
| } |
| |
| /* This function is called by the parser when a @selector() expression |
| is found, in order to compile it. It is only called by the parser |
| and only to compile a @selector(). */ |
| tree |
| objc_build_selector_expr (tree selnamelist) |
| { |
| tree selname; |
| |
| /* Obtain the full selector name. */ |
| if (TREE_CODE (selnamelist) == IDENTIFIER_NODE) |
| /* A unary selector. */ |
| selname = selnamelist; |
| else if (TREE_CODE (selnamelist) == TREE_LIST) |
| selname = build_keyword_selector (selnamelist); |
| else |
| abort (); |
| |
| /* If we are required to check @selector() expressions as they |
| are found, check that the selector has been declared. */ |
| if (warn_undeclared_selector) |
| { |
| /* Look the selector up in the list of all known class and |
| instance methods (up to this line) to check that the selector |
| exists. */ |
| hash hsh; |
| |
| /* First try with instance methods. */ |
| hsh = hash_lookup (nst_method_hash_list, selname); |
| |
| /* If not found, try with class methods. */ |
| if (!hsh) |
| { |
| hsh = hash_lookup (cls_method_hash_list, selname); |
| } |
| |
| /* If still not found, print out a warning. */ |
| if (!hsh) |
| { |
| warning ("undeclared selector %qs", IDENTIFIER_POINTER (selname)); |
| } |
| } |
| |
| |
| if (flag_typed_selectors) |
| return build_typed_selector_reference (selname, 0); |
| else |
| /* APPLE LOCAL begin radar 4359757 */ |
| return flag_next_runtime |
| ? build_next_runtime_selector_reference (selname) |
| : build_selector_reference (selname); |
| /* APPLE LOCAL end radar 4359757 */ |
| } |
| |
| tree |
| objc_build_encode_expr (tree type) |
| { |
| tree result; |
| const char *string; |
| |
| encode_type (type, obstack_object_size (&util_obstack), |
| OBJC_ENCODE_INLINE_DEFS); |
| obstack_1grow (&util_obstack, 0); /* null terminate string */ |
| string = obstack_finish (&util_obstack); |
| |
| /* Synthesize a string that represents the encoded struct/union. */ |
| result = my_build_string (strlen (string) + 1, string); |
| obstack_free (&util_obstack, util_firstobj); |
| return result; |
| } |
| |
| static tree |
| build_ivar_reference (tree id) |
| { |
| /* APPLE LOCAL ObjC new abi */ |
| tree ivar, base; |
| if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL) |
| { |
| /* Historically, a class method that produced objects (factory |
| method) would assign `self' to the instance that it |
| allocated. This would effectively turn the class method into |
| an instance method. Following this assignment, the instance |
| variables could be accessed. That practice, while safe, |
| violates the simple rule that a class method should not refer |
| to an instance variable. It's better to catch the cases |
| where this is done unknowingly than to support the above |
| paradigm. */ |
| warning ("instance variable %qs accessed in class method", |
| IDENTIFIER_POINTER (id)); |
| self_decl = convert (objc_instance_type, self_decl); /* cast */ |
| } |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| base = build_indirect_ref (self_decl, "->"); |
| if ((ivar = objc_v2_build_ivar_ref (base, id))) |
| return ivar; |
| /* APPLE LOCAL mainline */ |
| return objc_build_component_ref (base, id); |
| /* APPLE LOCAL end ObjC new abi */ |
| } |
| |
| /* Compute a hash value for a given method SEL_NAME. */ |
| |
| static size_t |
| hash_func (tree sel_name) |
| { |
| const unsigned char *s |
| = (const unsigned char *)IDENTIFIER_POINTER (sel_name); |
| size_t h = 0; |
| |
| while (*s) |
| h = h * 67 + *s++ - 113; |
| return h; |
| } |
| |
| static void |
| hash_init (void) |
| { |
| nst_method_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| cls_method_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| /* APPLE LOCAL begin radar 4359757 */ |
| class_nst_method_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| class_cls_method_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| class_names_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| meth_var_names_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| meth_var_types_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| prop_names_attr_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| sel_ref_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* APPLE LOCAL begin radar 4345837 */ |
| cls_name_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| als_name_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| /* APPLE LOCAL end radar 4345837 */ |
| |
| /* APPLE LOCAL begin radar 4441049 */ |
| ivar_offset_hash_list |
| = (hash *) ggc_alloc_cleared (SIZEHASHTABLE * sizeof (hash)); |
| /* APPLE LOCAL end radar 4441049 */ |
| |
| /* Initialize the hash table used to hold the constant string objects. */ |
| string_htab = htab_create_ggc (31, string_hash, |
| string_eq, NULL); |
| /* APPLE LOCAL begin radar 4204796 */ |
| /* code removed */ |
| } |
| /* APPLE LOCAL end radar 4204796 */ |
| /* APPLE LOCAL begin radar 4345837 */ |
| /* This routine adds sel_name to the hash list. sel_name is a class or alias |
| name for the class. If alias name, then value is its underlying class. |
| If class, the value is NULL_TREE. */ |
| |
| static void |
| hash_class_name_enter (hash *hashlist, tree sel_name, tree value) |
| { |
| hash obj; |
| int slot = hash_func (sel_name) % SIZEHASHTABLE; |
| |
| obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); |
| if (value != NULL_TREE) |
| { |
| /* Save the underlying class for the 'alias' in the hash table */ |
| attr obj_attr = (attr) ggc_alloc (sizeof (struct hashed_attribute)); |
| obj_attr->value = value; |
| obj->list = obj_attr; |
| } |
| else |
| obj->list = 0; |
| obj->next = hashlist[slot]; |
| obj->key = sel_name; |
| |
| hashlist[slot] = obj; /* append to front */ |
| |
| } |
| |
| /* Searches in the hash table looking for a match for class or alias name. */ |
| |
| static hash |
| hash_class_name_lookup (hash *hashlist, tree sel_name) |
| { |
| hash target; |
| |
| target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; |
| |
| while (target) |
| { |
| if (sel_name == target->key) |
| return target; |
| |
| target = target->next; |
| } |
| return 0; |
| } |
| /* APPLE LOCAL end radar 4345837 */ |
| |
| /* APPLE LOCAL begin radar 4441049 */ |
| /* This routine is given an extern variable and enters it in its hash table. |
| Note that hashing is done on its inner IDENTIFIER_NODE node. */ |
| |
| static void |
| hash_name_enter (hash *hashlist, tree ivar) |
| { |
| hash obj; |
| int slot = hash_func (DECL_NAME (ivar)) % SIZEHASHTABLE; |
| |
| obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); |
| obj->list = 0; |
| obj->next = hashlist[slot]; |
| obj->key = ivar; |
| |
| hashlist[slot] = obj; /* append to front */ |
| } |
| |
| /* This routine is given a name and returns a matching extern variable if |
| one is found. */ |
| |
| static tree |
| hash_name_lookup (hash *hashlist, tree ivar_name) |
| { |
| hash target; |
| |
| target = hashlist[hash_func (ivar_name) % SIZEHASHTABLE]; |
| |
| while (target) |
| { |
| if (ivar_name == DECL_NAME (target->key)) |
| return target->key; |
| |
| target = target->next; |
| } |
| return 0; |
| } |
| /* APPLE LOCAL end radar 4441049 */ |
| |
| /* WARNING!!!! hash_enter is called with a method, and will peek |
| inside to find its selector! But hash_lookup is given a selector |
| directly, and looks for the selector that's inside the found |
| entry's key (method) for comparison. */ |
| |
| static void |
| hash_enter (hash *hashlist, tree method) |
| { |
| hash obj; |
| int slot = hash_func (METHOD_SEL_NAME (method)) % SIZEHASHTABLE; |
| |
| obj = (hash) ggc_alloc (sizeof (struct hashed_entry)); |
| obj->list = 0; |
| obj->next = hashlist[slot]; |
| obj->key = method; |
| |
| hashlist[slot] = obj; /* append to front */ |
| } |
| |
| static hash |
| hash_lookup (hash *hashlist, tree sel_name) |
| { |
| hash target; |
| |
| target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; |
| |
| while (target) |
| { |
| if (sel_name == METHOD_SEL_NAME (target->key)) |
| return target; |
| |
| target = target->next; |
| } |
| return 0; |
| } |
| |
| static void |
| hash_add_attr (hash entry, tree value) |
| { |
| attr obj; |
| |
| obj = (attr) ggc_alloc (sizeof (struct hashed_attribute)); |
| obj->next = entry->list; |
| obj->value = value; |
| |
| entry->list = obj; /* append to front */ |
| } |
| |
| static tree |
| lookup_method (tree mchain, tree method) |
| { |
| tree key; |
| |
| if (TREE_CODE (method) == IDENTIFIER_NODE) |
| key = method; |
| else |
| key = METHOD_SEL_NAME (method); |
| |
| while (mchain) |
| { |
| if (METHOD_SEL_NAME (mchain) == key) |
| return mchain; |
| |
| mchain = TREE_CHAIN (mchain); |
| } |
| return NULL_TREE; |
| } |
| |
| /* APPLE LOCAL begin radar 4359757 */ |
| /* This routine does a hash lookup keyed on method name and further |
| qualified by its 'class'. */ |
| static hash |
| class_method_hash_lookup (hash *hashlist, tree sel_name, tree class) |
| { |
| hash target; |
| |
| target = hashlist[hash_func (sel_name) % SIZEHASHTABLE]; |
| while (target) |
| { |
| if (sel_name == METHOD_SEL_NAME (target->key) |
| && class == METHOD_CONTEXT (target->key)) |
| return target; |
| target = target->next; |
| } |
| return 0; |
| } |
| |
| static void |
| add_class_method_hash (hash *hash_list, tree method, tree class) |
| { |
| hash_enter (hash_list, method); |
| METHOD_CONTEXT (method) = class; |
| } |
| |
| /* This routine does a quick hash look up of METHOD_IDENT in global |
| class-method hash table. Hash function is keyed on method name but |
| 'context' of method found must also match CLASS. |
| */ |
| static tree |
| fast_lookup_method (int is_class, tree class, tree method_ident) |
| { |
| hash hsh = (!is_class) ? class_method_hash_lookup (class_nst_method_hash_list, |
| method_ident, class) |
| : class_method_hash_lookup (class_cls_method_hash_list, |
| method_ident, class); |
| return !hsh ? NULL_TREE : hsh->key; |
| } |
| /* APPLE LOCAL end radar 4359757 */ |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Look up a class (if OBJC_LOOKUP_CLASS is set in FLAGS) or instance method |
| in INTERFACE, along with any categories and protocols attached thereto. |
| If method is not found, and the OBJC_LOOKUP_NO_SUPER is _not_ set in FLAGS, |
| recursively examine the INTERFACE's superclass. If OBJC_LOOKUP_CLASS is |
| set, OBJC_LOOKUP_NO_SUPER is cleared, and no suitable class method could |
| be found in INTERFACE or any of its superclasses, look for an _instance_ |
| method of the same name in the root class as a last resort. |
| |
| If a suitable method cannot be found, return NULL_TREE. */ |
| |
| static tree |
| /* APPLE LOCAL objc new property */ |
| lookup_method_static (tree interface, tree ident, int flags, bool property_lookup) |
| /* APPLE LOCAL end mainline */ |
| { |
| tree meth = NULL_TREE, root_inter = NULL_TREE; |
| tree inter = interface; |
| /* APPLE LOCAL begin mainline */ |
| int is_class = (flags & OBJC_LOOKUP_CLASS); |
| int no_superclasses = (flags & OBJC_LOOKUP_NO_SUPER); |
| /* APPLE LOCAL end mainline */ |
| |
| while (inter) |
| { |
| tree chain = is_class ? CLASS_CLS_METHODS (inter) : CLASS_NST_METHODS (inter); |
| tree category = inter; |
| |
| /* First, look up the method in the class itself. */ |
| /* APPLE LOCAL begin objc new property - radar 4359757 */ |
| if ((meth = fast_lookup_method (is_class, inter, ident)) |
| && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) |
| /* APPLE LOCAL end objc new property */ |
| return meth; |
| |
| /* Failing that, look for the method in each category of the class. */ |
| while ((category = CLASS_CATEGORY_LIST (category))) |
| { |
| chain = is_class ? CLASS_CLS_METHODS (category) : CLASS_NST_METHODS (category); |
| |
| /* Check directly in each category. */ |
| /* APPLE LOCAL begin objc new property */ |
| if ((meth = lookup_method (chain, ident)) |
| && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) |
| /* APPLE LOCAL end objc new property */ |
| return meth; |
| |
| /* Failing that, check in each category's protocols. */ |
| if (CLASS_PROTOCOL_LIST (category)) |
| { |
| /* APPLE LOCAL begin objc new property */ |
| if ((meth = (lookup_method_in_protocol_list |
| (CLASS_PROTOCOL_LIST (category), ident, is_class))) |
| && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) |
| /* APPLE LOCAL end objc new property */ |
| return meth; |
| } |
| } |
| |
| /* If not found in categories, check in protocols of the main class. */ |
| if (CLASS_PROTOCOL_LIST (inter)) |
| { |
| /* APPLE LOCAL begin objc new property */ |
| if ((meth = (lookup_method_in_protocol_list |
| (CLASS_PROTOCOL_LIST (inter), ident, is_class))) |
| && (!property_lookup || METHOD_PROPERTY_CONTEXT (meth))) |
| /* APPLE LOCAL end objc new property */ |
| return meth; |
| } |
| |
| /* APPLE LOCAL begin mainline */ |
| /* If we were instructed not to look in superclasses, don't. */ |
| if (no_superclasses) |
| return NULL_TREE; |
| /* APPLE LOCAL end mainline */ |
| |
| /* Failing that, climb up the inheritance hierarchy. */ |
| root_inter = inter; |
| inter = lookup_interface (CLASS_SUPER_NAME (inter)); |
| } |
| while (inter); |
| |
| /* If no class (factory) method was found, check if an _instance_ |
| method of the same name exists in the root class. This is what |
| the Objective-C runtime will do. If an instance method was not |
| found, return 0. */ |
| /* APPLE LOCAL objc new property */ |
| return is_class ? lookup_method_static (root_inter, ident, 0, property_lookup): NULL_TREE; |
| } |
| |
| /* Add the method to the hash list if it doesn't contain an identical |
| method already. */ |
| /* APPLE LOCAL begin mainline */ |
| /* APPLE LOCAL end mainline */ |
| |
| static void |
| add_method_to_hash_list (hash *hash_list, tree method) |
| { |
| hash hsh; |
| |
| if (!(hsh = hash_lookup (hash_list, METHOD_SEL_NAME (method)))) |
| { |
| /* Install on a global chain. */ |
| hash_enter (hash_list, method); |
| } |
| else |
| { |
| /* Check types against those; if different, add to a list. */ |
| attr loop; |
| /* APPLE LOCAL mainline */ |
| int already_there = comp_proto_with_proto (method, hsh->key, 1); |
| for (loop = hsh->list; !already_there && loop; loop = loop->next) |
| /* APPLE LOCAL mainline */ |
| already_there |= comp_proto_with_proto (method, loop->value, 1); |
| if (!already_there) |
| hash_add_attr (hsh, method); |
| } |
| } |
| |
| static tree |
| /* APPLE LOCAL C* language */ |
| objc_add_method (tree class, tree method, int is_class, int is_optional) |
| { |
| tree mth; |
| |
| /* APPLE LOCAL begin C* language */ |
| /* @optional methods are added to protocol's OPTIONAL list */ |
| if (is_optional) |
| { |
| gcc_assert (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE); |
| if (!(mth = lookup_method (is_class |
| ? PROTOCOL_OPTIONAL_CLS_METHODS (class) |
| : PROTOCOL_OPTIONAL_NST_METHODS (class), method))) |
| { |
| if (is_class) |
| { |
| TREE_CHAIN (method) = PROTOCOL_OPTIONAL_CLS_METHODS (class); |
| PROTOCOL_OPTIONAL_CLS_METHODS (class) = method; |
| } |
| else |
| { |
| TREE_CHAIN (method) = PROTOCOL_OPTIONAL_NST_METHODS (class); |
| PROTOCOL_OPTIONAL_NST_METHODS (class) = method; |
| } |
| } |
| } |
| else |
| /* APPLE LOCAL end C* language */ |
| /* APPLE LOCAL begin radar 4359757 */ |
| if (!(mth = fast_lookup_method (is_class, class, METHOD_SEL_NAME (method)))) |
| /* APPLE LOCAL end radar 4359757 */ |
| { |
| /* put method on list in reverse order */ |
| if (is_class) |
| { |
| TREE_CHAIN (method) = CLASS_CLS_METHODS (class); |
| CLASS_CLS_METHODS (class) = method; |
| } |
| else |
| { |
| TREE_CHAIN (method) = CLASS_NST_METHODS (class); |
| CLASS_NST_METHODS (class) = method; |
| } |
| /* APPLE LOCAL begin radar 4359757 */ |
| add_class_method_hash ((!is_class) ? class_nst_method_hash_list |
| : class_cls_method_hash_list, |
| method, class); |
| /* APPLE LOCAL end radar 4359757 */ |
| } |
| else |
| { |
| /* When processing an @interface for a class or category, give hard |
| errors on methods with identical selectors but differing argument |
| and/or return types. We do not do this for @implementations, because |
| C/C++ will do it for us (i.e., there will be duplicate function |
| definition errors). */ |
| if ((TREE_CODE (class) == CLASS_INTERFACE_TYPE |
| || TREE_CODE (class) == CATEGORY_INTERFACE_TYPE) |
| /* APPLE LOCAL mainline */ |
| && !comp_proto_with_proto (method, mth, 1)) |
| error ("duplicate declaration of method %<%c%s%>", |
| is_class ? '+' : '-', |
| IDENTIFIER_POINTER (METHOD_SEL_NAME (mth))); |
| } |
| |
| if (is_class) |
| add_method_to_hash_list (cls_method_hash_list, method); |
| else |
| { |
| add_method_to_hash_list (nst_method_hash_list, method); |
| |
| /* Instance methods in root classes (and categories thereof) |
| may act as class methods as a last resort. We also add |
| instance methods listed in @protocol declarations to |
| the class hash table, on the assumption that @protocols |
| may be adopted by root classes or categories. */ |
| if (TREE_CODE (class) == CATEGORY_INTERFACE_TYPE |
| || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) |
| class = lookup_interface (CLASS_NAME (class)); |
| |
| if (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE |
| || !CLASS_SUPER_NAME (class)) |
| add_method_to_hash_list (cls_method_hash_list, method); |
| } |
| |
| return method; |
| } |
| |
| static tree |
| /* APPLE LOCAL mainline */ |
| add_class (tree class, tree name) |
| { |
| /* Put interfaces on list in reverse order. */ |
| TREE_CHAIN (class) = interface_chain; |
| interface_chain = class; |
| /* APPLE LOCAL mainline */ |
| IDENTIFIER_INTERFACE_VALUE (name) = class; |
| return interface_chain; |
| } |
| |
| /* APPLE LOCAL begin radar 4548636 */ |
| /* This routine updates TREE_DEPRECATED/TREE_UNAVAILABLE fields of 'record' |
| type of the class. */ |
| static void |
| objc_attach_attrs_to_type (tree type, tree class) |
| { |
| tree chain; |
| |
| if (!CLASS_ATTRIBUTES (class)) |
| return; /* The most common case. */ |
| |
| for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) |
| { |
| if (is_attribute_p ("deprecated", TREE_PURPOSE (chain))) |
| TREE_DEPRECATED (type) = 1; |
| else if (is_attribute_p ("unavailable", TREE_PURPOSE (chain))) |
| TREE_UNAVAILABLE (type) = 1; |
| } |
| return; |
| } |
| |
| /* Warn when a 'class' with deprecated/available attribute |
| set is used. */ |
| |
| static void |
| objc_warn_on_class_attributes (tree class, bool use) |
| { |
| tree chain; |
| |
| if (!class || !CLASS_ATTRIBUTES (class)) |
| return; /* The most common case. */ |
| for (chain = CLASS_ATTRIBUTES (class); chain; chain = TREE_CHAIN (chain)) |
| { |
| if (is_attribute_p ("deprecated", TREE_PURPOSE (chain))) |
| { |
| if (use) |
| warning ("class %qs is deprecated", |
| IDENTIFIER_POINTER (CLASS_NAME (class))); |
| } |
| else if (is_attribute_p ("unavailable", TREE_PURPOSE (chain))) |
| { |
| if (use) |
| warning ("class %qs is unavailable", |
| IDENTIFIER_POINTER (CLASS_NAME (class))); |
| } |
| /* APPLE LOCAL begin radar 4705298, 48431458 */ |
| else if (!use && is_attribute_p ("visibility", TREE_PURPOSE (chain))) |
| { |
| tree id = TREE_VALUE (TREE_VALUE ((chain))); |
| const char *attr_arg = TREE_STRING_POINTER (id); |
| if (strcmp (attr_arg, "hidden") && strcmp (attr_arg, "default")) |
| warning ("only \"hidden\" or \"default\" visibility attribute allowed on a class"); |
| return; |
| } |
| /* APPLE LOCAL end radar 4705298, 48431458 */ |
| /* APPLE LOCAL begin radar 5008110 */ |
| else if (is_attribute_p ("objc_exception", TREE_PURPOSE (chain))) |
| ; |
| /* APPLE LOCAL end radar 5008110 */ |
| else if (!use) |
| warning ("attribute %s is unknown - ignored", |
| IDENTIFIER_POINTER (TREE_PURPOSE (chain))); |
| } |
| return; |
| } |
| /* APPLE LOCAL end radar 4548636 */ |
| |
| static void |
| add_category (tree class, tree category) |
| { |
| /* Put categories on list in reverse order. */ |
| tree cat = lookup_category (class, CLASS_SUPER_NAME (category)); |
| |
| if (cat) |
| { |
| warning ("duplicate interface declaration for category %<%s(%s)%>", |
| IDENTIFIER_POINTER (CLASS_NAME (class)), |
| IDENTIFIER_POINTER (CLASS_SUPER_NAME (category))); |
| } |
| else |
| { |
| CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (class); |
| CLASS_CATEGORY_LIST (class) = category; |
| } |
| /* APPLE LOCAL radar 4548636 */ |
| objc_warn_on_class_attributes (class, true); |
| } |
| |
| /* Called after parsing each instance variable declaration. Necessary to |
| preserve typedefs and implement public/private... |
| |
| PUBLIC is 1 for public, 0 for protected, and 2 for private. */ |
| |
| static tree |
| add_instance_variable (tree class, int public, tree field_decl) |
| { |
| tree field_type = TREE_TYPE (field_decl); |
| const char *ivar_name = DECL_NAME (field_decl) |
| ? IDENTIFIER_POINTER (DECL_NAME (field_decl)) |
| : "<unnamed>"; |
| |
| #ifdef OBJCPLUS |
| if (TREE_CODE (field_type) == REFERENCE_TYPE) |
| { |
| error ("illegal reference type specified for instance variable %qs", |
| ivar_name); |
| /* Return class as is without adding this ivar. */ |
| return class; |
| } |
| #endif |
| |
| if (field_type == error_mark_node || !TYPE_SIZE (field_type) |
| || TYPE_SIZE (field_type) == error_mark_node) |
| /* 'type[0]' is allowed, but 'type[]' is not! */ |
| { |
| error ("instance variable %qs has unknown size", ivar_name); |
| /* Return class as is without adding this ivar. */ |
| return class; |
| } |
| |
| #ifdef OBJCPLUS |
| /* APPLE LOCAL begin mainline */ |
| /* Check if the ivar being added has a non-POD C++ type. If so, we will |
| need to either (1) warn the user about it or (2) generate suitable |
| constructor/destructor call from '- .cxx_construct' or '- .cxx_destruct' |
| methods (if '-fobjc-call-cxx-cdtors' was specified). */ |
| if (IS_AGGR_TYPE (field_type) |
| && (TYPE_NEEDS_CONSTRUCTING (field_type) |
| || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type) |
| || TYPE_POLYMORPHIC_P (field_type))) |
| { |
| const char *type_name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (field_type)); |
| |
| if (flag_objc_call_cxx_cdtors) |
| { |
| /* Since the ObjC runtime will be calling the constructors and |
| destructors for us, the only thing we can't handle is the lack |
| of a default constructor. */ |
| if (TYPE_NEEDS_CONSTRUCTING (field_type) |
| && !TYPE_HAS_DEFAULT_CONSTRUCTOR (field_type)) |
| { |
| warning ("type `%s' has no default constructor to call", |
| type_name); |
| |
| /* If we cannot call a constructor, we should also avoid |
| calling the destructor, for symmetry. */ |
| if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)) |
| warning ("destructor for `%s' shall not be run either", |
| type_name); |
| } |
| } |
| else |
| { |
| static bool warn_cxx_ivars = false; |
| |
| if (TYPE_POLYMORPHIC_P (field_type)) |
| { |
| /* Vtable pointers are Real Bad(tm), since Obj-C cannot |
| initialize them. */ |
| error ("type `%s' has virtual member functions", type_name); |
| error ("illegal aggregate type `%s' specified " |
| "for instance variable `%s'", |
| type_name, ivar_name); |
| /* Return class as is without adding this ivar. */ |
| return class; |
| } |
| |
| /* User-defined constructors and destructors are not known to Obj-C |
| and hence will not be called. This may or may not be a problem. */ |
| if (TYPE_NEEDS_CONSTRUCTING (field_type)) |
| warning ("type `%s' has a user-defined constructor", type_name); |
| if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)) |
| warning ("type `%s' has a user-defined destructor", type_name); |
| |
| if (!warn_cxx_ivars) |
| { |
| warning ("C++ constructors and destructors will not " |
| "be invoked for Objective-C fields"); |
| warn_cxx_ivars = true; |
| } |
| } |
| } |
| /* APPLE LOCAL end mainline */ |
| #endif |
| |
| /* Overload the public attribute, it is not used for FIELD_DECLs. */ |
| switch (public) |
| { |
| case 0: |
| TREE_PUBLIC (field_decl) = 0; |
| TREE_PRIVATE (field_decl) = 0; |
| TREE_PROTECTED (field_decl) = 1; |
| /* APPLE LOCAL radar 4951615 */ |
| IVAR_PUBLIC_OR_PROTECTED (field_decl) = 1; |
| break; |
| |
| /* APPLE LOCAL radar 4564694 */ |
| case 3: /* @package */ |
| case 1: |
| TREE_PUBLIC (field_decl) = 1; |
| /* APPLE LOCAL radar 4951615, radar 4564694 */ |
| IVAR_PUBLIC_OR_PROTECTED (field_decl) = (flag_objc_abi == 2 && public == 3) ? 0 : 1; |
| TREE_PRIVATE (field_decl) = 0; |
| TREE_PROTECTED (field_decl) = 0; |
| break; |
| |
| case 2: |
| TREE_PUBLIC (field_decl) = 0; |
| TREE_PRIVATE (field_decl) = 1; |
| TREE_PROTECTED (field_decl) = 0; |
| /* APPLE LOCAL radar 4951615 */ |
| IVAR_PUBLIC_OR_PROTECTED (field_decl) = 0; |
| break; |
| |
| } |
| |
| CLASS_RAW_IVARS (class) = chainon (CLASS_RAW_IVARS (class), field_decl); |
| |
| return class; |
| } |
| |
| static tree |
| is_ivar (tree decl_chain, tree ident) |
| { |
| for ( ; decl_chain; decl_chain = TREE_CHAIN (decl_chain)) |
| if (DECL_NAME (decl_chain) == ident) |
| return decl_chain; |
| return NULL_TREE; |
| } |
| |
| /* APPLE LOCAL begin radar 4653319 */ |
| /* Just like is_ivar, except it also looks into inheritance chain. */ |
| |
| static tree |
| nested_ivar_lookup (tree interface, tree ident) |
| { |
| tree ivar_chain = CLASS_IVARS (interface); |
| tree res = is_ivar (ivar_chain, ident); |
| if (res) |
| return res; |
| |
| while (CLASS_SUPER_NAME (interface)) |
| { |
| interface = lookup_interface (CLASS_SUPER_NAME (interface)); |
| if (interface) |
| return nested_ivar_lookup (interface, ident); |
| } |
| return res; |
| } |
| |
| /* APPLE LOCAL end radar 4653319 */ |
| |
| /* True if the ivar is private and we are not in its implementation. */ |
| |
| static int |
| is_private (tree decl) |
| { |
| return (TREE_PRIVATE (decl) |
| && ! is_ivar (CLASS_IVARS (implementation_template), |
| DECL_NAME (decl))); |
| } |
| |
| /* We have an instance variable reference;, check to see if it is public. */ |
| |
| int |
| objc_is_public (tree expr, tree identifier) |
| { |
| /* APPLE LOCAL begin mainline */ |
| tree basetype, decl; |
| |
| #ifdef OBJCPLUS |
| if (processing_template_decl) |
| return 1; |
| #endif |
| /* APPLE LOCAL begin radar 4862848 */ |
| if (expr == error_mark_node) |
| return 0; |
| /* APPLE LOCAL end radar 4862848 */ |
| |
| basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr)); |
| |
| if (basetype && TREE_CODE (basetype) == RECORD_TYPE) |
| { |
| if (TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype)) |
| { |
| tree class = lookup_interface (OBJC_TYPE_NAME (basetype)); |
| |
| if (!class) |
| { |
| error ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (OBJC_TYPE_NAME (basetype))); |
| return 0; |
| } |
| |
| if ((decl = is_ivar (get_class_ivars (class, true), identifier))) |
| /* APPLE LOCAL end mainline */ |
| { |
| if (TREE_PUBLIC (decl)) |
| return 1; |
| |
| /* Important difference between the Stepstone translator: |
| all instance variables should be public within the context |
| of the implementation. */ |
| if (objc_implementation_context |
| /* APPLE LOCAL begin mainline */ |
| && ((TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| || (TREE_CODE (objc_implementation_context) |
| == CATEGORY_IMPLEMENTATION_TYPE))) |
| { |
| tree curtype = TYPE_MAIN_VARIANT |
| (CLASS_STATIC_TEMPLATE |
| (implementation_template)); |
| |
| if (basetype == curtype |
| || DERIVED_FROM_P (basetype, curtype)) |
| { |
| int private = is_private (decl); |
| |
| if (private) |
| error ("instance variable %qs is declared private", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| |
| return !private; |
| } |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| /* The 2.95.2 compiler sometimes allowed C functions to access |
| non-@public ivars. We will let this slide for now... */ |
| if (!objc_method_context) |
| { |
| /* APPLE LOCAL begin radar 4805612 */ |
| /* Now must allow access to private/protected ivar through an object |
| pointer in a nested C function. */ |
| if (objc_interface_context && |
| (TREE_CODE (objc_interface_context) == CLASS_INTERFACE_TYPE |
| || TREE_CODE (objc_interface_context) == CATEGORY_INTERFACE_TYPE)) |
| { |
| tree curtype = TYPE_MAIN_VARIANT (CLASS_STATIC_TEMPLATE |
| (objc_interface_context)); |
| if (basetype == curtype |
| || DERIVED_FROM_P (basetype, curtype)) |
| { |
| int private; |
| gcc_assert (!implementation_template); |
| implementation_template = objc_interface_context; /* ref'ed in is_private */ |
| private = is_private (decl); |
| implementation_template = NULL_TREE; |
| if (private) |
| error ("instance variable %qs is declared private", |
| IDENTIFIER_POINTER (DECL_NAME (decl))); |
| return !private; |
| } |
| } |
| /* APPLE LOCAL end radar 4805612 */ |
| warning ("instance variable %qs is %s; " |
| "this will be a hard error in the future", |
| IDENTIFIER_POINTER (identifier), |
| TREE_PRIVATE (decl) ? "@private" : "@protected"); |
| return 1; |
| } |
| |
| error ("instance variable %qs is declared %s", |
| IDENTIFIER_POINTER (identifier), |
| TREE_PRIVATE (decl) ? "private" : "protected"); |
| return 0; |
| } |
| } |
| /* APPLE LOCAL mainline */ |
| /* Unneeded code removed. */ |
| } |
| |
| return 1; |
| } |
| /* APPLE LOCAL begin radar 4568791 */ |
| /* This routine gets called when there is no implementation of method declared |
| in protocol in current class. This used to cause a warning, but now rules |
| are relaxed so if the method has been declared in an inherited class no warning |
| will be issued. |
| */ |
| static bool |
| objc_method_inherited (tree meth, int mtype, tree interface) |
| { |
| tree list; |
| tree inter = interface; |
| |
| while ((inter = lookup_interface (CLASS_SUPER_NAME (inter)))) |
| { |
| list = (mtype == '+') ? CLASS_CLS_METHODS (inter) |
| : CLASS_NST_METHODS (inter); |
| if (lookup_method (list, meth)) |
| return true; |
| } |
| |
| return false; |
| } |
| /* APPLE LOCAL end radar 4568791 */ |
| |
| /* APPLE LOCAL begin radar 4449535 */ |
| /* This routine checks to see if class implements forwardInvocation method and objects |
| of this class are derived from 'NSProxy' so that to forward requests from one object |
| to another. It then returns 'true' or 'false' accordingly. |
| Under such conditions, which means that every method possible is implemented in the class, |
| gcc should not issue "Method definition not found" warnings. |
| */ |
| static bool |
| objc_impl_forwardInvocation (tree context) |
| { |
| tree inherit; |
| if (fast_lookup_method (false, context, get_identifier ("forwardInvocation:")) |
| == NULL_TREE) |
| return false; |
| inherit = lookup_interface (CLASS_SUPER_NAME (context)); |
| while (inherit) |
| { |
| if (!strcmp (IDENTIFIER_POINTER (CLASS_NAME (inherit)), "NSProxy")) |
| return true; |
| inherit = lookup_interface (CLASS_SUPER_NAME (inherit)); |
| } |
| return false; |
| } |
| /* APPLE LOCAL end radar 4449535 */ |
| |
| /* Make sure all entries in CHAIN are also in LIST. */ |
| |
| static int |
| /* APPLE LOCAL radar 4568791, 4359757 */ |
| check_methods (tree chain, int mtype, tree interface) |
| { |
| int first = 1; |
| |
| while (chain) |
| { |
| /* APPLE LOCAL begin radar 4359757 */ |
| if (!fast_lookup_method (mtype == (int)'+', |
| objc_implementation_context, METHOD_SEL_NAME (chain))) |
| /* APPLE LOCAL end radar 4359757 */ |
| { |
| /* APPLE LOCAL begin C* property metadata (Radar 4498373) */ |
| if (chain != NULL && METHOD_PROPERTY_CONTEXT (chain) != NULL_TREE) |
| { |
| /* Case of instance method in interface not found in its implementation. |
| This is OK in case of instance method setter/getter declaration synthesized |
| via property declaration in the interface. Happens for dynamic properties. */ |
| gcc_assert (mtype == (int)'-'); |
| gcc_assert (TREE_CODE (METHOD_PROPERTY_CONTEXT (chain)) == PROPERTY_DECL); |
| chain = TREE_CHAIN (chain); |
| continue; |
| } |
| /* APPLE LOCAL end C* property metadata (Radar 4498373) */ |
| /* APPLE LOCAL begin radar 4568791 */ |
| else if (interface && objc_method_inherited (chain, mtype, interface)) |
| { |
| /* Don't issue the warning if method declared in protocol has been |
| declared in the inheritance heirarchy. */ |
| chain = TREE_CHAIN (chain); |
| continue; |
| } |
| /* APPLE LOCAL end radar 4568791 */ |
| if (first) |
| { |
| if (TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| warning ("incomplete implementation of class %qs", |
| IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context))); |
| else if (TREE_CODE (objc_implementation_context) |
| == CATEGORY_IMPLEMENTATION_TYPE) |
| warning ("incomplete implementation of category %qs", |
| IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context))); |
| first = 0; |
| } |
| |
| warning ("method definition for %<%c%s%> not found", |
| mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain))); |
| } |
| |
| chain = TREE_CHAIN (chain); |
| } |
| |
| return first; |
| } |
| |
| /* Check if CLASS, or its superclasses, explicitly conforms to PROTOCOL. */ |
| |
| static int |
| conforms_to_protocol (tree class, tree protocol) |
| { |
| if (TREE_CODE (protocol) == PROTOCOL_INTERFACE_TYPE) |
| { |
| tree p = CLASS_PROTOCOL_LIST (class); |
| while (p && TREE_VALUE (p) != protocol) |
| p = TREE_CHAIN (p); |
| |
| if (!p) |
| { |
| tree super = (CLASS_SUPER_NAME (class) |
| ? lookup_interface (CLASS_SUPER_NAME (class)) |
| : NULL_TREE); |
| int tmp = super ? conforms_to_protocol (super, protocol) : 0; |
| if (!tmp) |
| return 0; |
| } |
| } |
| |
| return 1; |
| } |
| |
| /* Make sure all methods in CHAIN are accessible as MTYPE methods in |
| CONTEXT. This is one of two mechanisms to check protocol integrity. */ |
| |
| static int |
| check_methods_accessible (tree chain, tree context, int mtype) |
| { |
| int first = 1; |
| tree list; |
| tree base_context = context; |
| |
| while (chain) |
| { |
| /* APPLE LOCAL begin radar 4963113 */ |
| if (chain != NULL && METHOD_PROPERTY_CONTEXT (chain) != NULL_TREE) |
| { |
| /* Case of an accessor in protocol not implemented in @implementation. |
| This is OK when property is declared dynamic. So, with -Wno-protocol |
| no warning must be issued. Cousin of radar 4498373 */ |
| gcc_assert (mtype == (int)'-'); |
| gcc_assert (TREE_CODE (METHOD_PROPERTY_CONTEXT (chain)) == PROPERTY_DECL); |
| chain = TREE_CHAIN (chain); |
| continue; |
| } |
| /* APPLE LOCAL end radar 4963113 */ |
| context = base_context; |
| while (context) |
| { |
| if (mtype == '+') |
| list = CLASS_CLS_METHODS (context); |
| else |
| list = CLASS_NST_METHODS (context); |
| |
| if (lookup_method (list, chain)) |
| break; |
| |
| else if (TREE_CODE (context) == CLASS_IMPLEMENTATION_TYPE |
| || TREE_CODE (context) == CLASS_INTERFACE_TYPE) |
| context = (CLASS_SUPER_NAME (context) |
| ? lookup_interface (CLASS_SUPER_NAME (context)) |
| : NULL_TREE); |
| |
| else if (TREE_CODE (context) == CATEGORY_IMPLEMENTATION_TYPE |
| || TREE_CODE (context) == CATEGORY_INTERFACE_TYPE) |
| context = (CLASS_NAME (context) |
| ? lookup_interface (CLASS_NAME (context)) |
| : NULL_TREE); |
| else |
| abort (); |
| } |
| |
| if (context == NULL_TREE) |
| { |
| if (first) |
| { |
| if (TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| warning ("incomplete implementation of class %qs", |
| IDENTIFIER_POINTER |
| (CLASS_NAME (objc_implementation_context))); |
| else if (TREE_CODE (objc_implementation_context) |
| == CATEGORY_IMPLEMENTATION_TYPE) |
| warning ("incomplete implementation of category %qs", |
| IDENTIFIER_POINTER |
| (CLASS_SUPER_NAME (objc_implementation_context))); |
| first = 0; |
| } |
| warning ("method definition for %<%c%s%> not found", |
| mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain))); |
| } |
| |
| chain = TREE_CHAIN (chain); /* next method... */ |
| } |
| return first; |
| } |
| |
| /* Check whether the current interface (accessible via |
| 'objc_implementation_context') actually implements protocol P, along |
| with any protocols that P inherits. */ |
| |
| static void |
| /* APPLE LOCAL radar 4568791 */ |
| check_protocol (tree p, const char *type, const char *name, tree interface) |
| { |
| if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) |
| { |
| /* APPLE LOCAL radar 4449535 */ |
| int f1, f2=1; |
| |
| /* Ensure that all protocols have bodies! */ |
| if (warn_protocol) |
| { |
| f1 = check_methods (PROTOCOL_CLS_METHODS (p), |
| /* APPLE LOCAL radar 4359757 */ |
| /* argument removed */ |
| /* APPLE LOCAL radar 4568791 */ |
| '+', interface); |
| /* APPLE LOCAL begin radar 4449535 */ |
| if (!objc_impl_forwardInvocation (objc_implementation_context)) |
| f2 = check_methods (PROTOCOL_NST_METHODS (p), |
| /* APPLE LOCAL radar 4359757 */ |
| /* argument removed */ |
| /* APPLE LOCAL radar 4568791 */ |
| '-', interface); |
| /* APPLE LOCAL end radar 4449535 */ |
| } |
| else |
| { |
| f1 = check_methods_accessible (PROTOCOL_CLS_METHODS (p), |
| objc_implementation_context, |
| '+'); |
| /* APPLE LOCAL begin radar 4449535 */ |
| if (!objc_impl_forwardInvocation (objc_implementation_context)) |
| f2 = check_methods_accessible (PROTOCOL_NST_METHODS (p), |
| objc_implementation_context, |
| '-'); |
| /* APPLE LOCAL end radar 4449535 */ |
| } |
| |
| if (!f1 || !f2) |
| warning ("%s %qs does not fully implement the %qs protocol", |
| type, name, IDENTIFIER_POINTER (PROTOCOL_NAME (p))); |
| } |
| |
| /* Check protocols recursively. */ |
| if (PROTOCOL_LIST (p)) |
| { |
| tree subs = PROTOCOL_LIST (p); |
| tree super_class = |
| lookup_interface (CLASS_SUPER_NAME (implementation_template)); |
| |
| while (subs) |
| { |
| tree sub = TREE_VALUE (subs); |
| |
| /* If the superclass does not conform to the protocols |
| inherited by P, then we must! */ |
| if (!super_class || !conforms_to_protocol (super_class, sub)) |
| /* APPLE LOCAL radar 4568791 */ |
| check_protocol (sub, type, name, interface); |
| subs = TREE_CHAIN (subs); |
| } |
| } |
| } |
| |
| /* Check whether the current interface (accessible via |
| 'objc_implementation_context') actually implements the protocols listed |
| in PROTO_LIST. */ |
| |
| static void |
| /* APPLE LOCAL radar 4568791 */ |
| check_protocols (tree proto_list, const char *type, const char *name, tree interface) |
| { |
| for ( ; proto_list; proto_list = TREE_CHAIN (proto_list)) |
| { |
| tree p = TREE_VALUE (proto_list); |
| |
| /* APPLE LOCAL radar 4568791 */ |
| check_protocol (p, type, name, interface); |
| } |
| } |
| |
| /* Make sure that the class CLASS_NAME is defined |
| CODE says which kind of thing CLASS_NAME ought to be. |
| It can be CLASS_INTERFACE_TYPE, CLASS_IMPLEMENTATION_TYPE, |
| CATEGORY_INTERFACE_TYPE, or CATEGORY_IMPLEMENTATION_TYPE. */ |
| |
| static tree |
| start_class (enum tree_code code, tree class_name, tree super_name, |
| tree protocol_list) |
| { |
| tree class, decl; |
| |
| #ifdef OBJCPLUS |
| if (current_namespace != global_namespace) { |
| error ("Objective-C declarations may only appear in global scope"); |
| } |
| #endif /* OBJCPLUS */ |
| |
| if (objc_implementation_context) |
| { |
| warning ("%<@end%> missing in implementation context"); |
| finish_class (objc_implementation_context); |
| objc_ivar_chain = NULL_TREE; |
| objc_implementation_context = NULL_TREE; |
| } |
| |
| class = make_node (code); |
| TYPE_LANG_SLOT_1 (class) = make_tree_vec (CLASS_LANG_SLOT_ELTS); |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Check for existence of the super class, if one was specified. Note |
| that we must have seen an @interface, not just a @class. If we |
| are looking at a @compatibility_alias, traverse it first. */ |
| /* APPLE LOCAL end mainline */ |
| if ((code == CLASS_INTERFACE_TYPE || code == CLASS_IMPLEMENTATION_TYPE) |
| /* APPLE LOCAL begin mainline */ |
| && super_name) |
| { |
| tree super = objc_is_class_name (super_name); |
| /* APPLE LOCAL begin radar 4548636 */ |
| tree super_interface = NULL_TREE; |
| if (!super || !(super_interface = lookup_interface (super))) |
| { |
| error ("cannot find interface declaration for %qs, superclass of %qs", |
| IDENTIFIER_POINTER (super ? super : super_name), |
| IDENTIFIER_POINTER (class_name)); |
| super_name = NULL_TREE; |
| } |
| else |
| { |
| objc_warn_on_class_attributes (super_interface, true); |
| super_name = super; |
| } |
| /* APPLE LOCAL end radar 4548636 */ |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| CLASS_NAME (class) = class_name; |
| CLASS_SUPER_NAME (class) = super_name; |
| CLASS_CLS_METHODS (class) = NULL_TREE; |
| |
| /* APPLE LOCAL radar 4695109 */ |
| /* PROTOCOL_IMPLEMENTATION_TYPE removed */ |
| if (! objc_is_class_name (class_name) |
| && (decl = lookup_name (class_name))) |
| { |
| error ("%qs redeclared as different kind of symbol", |
| IDENTIFIER_POINTER (class_name)); |
| error ("%Jprevious declaration of '%D'", |
| decl, decl); |
| } |
| |
| if (code == CLASS_IMPLEMENTATION_TYPE) |
| { |
| { |
| tree chain; |
| |
| for (chain = implemented_classes; chain; chain = TREE_CHAIN (chain)) |
| if (TREE_VALUE (chain) == class_name) |
| { |
| error ("reimplementation of class %qs", |
| IDENTIFIER_POINTER (class_name)); |
| /* APPLE LOCAL radar 4689268 */ |
| return class; |
| } |
| implemented_classes = tree_cons (NULL_TREE, class_name, |
| implemented_classes); |
| } |
| |
| /* Reset for multiple classes per file. */ |
| method_slot = 0; |
| |
| objc_implementation_context = class; |
| |
| /* Lookup the interface for this implementation. */ |
| |
| if (!(implementation_template = lookup_interface (class_name))) |
| { |
| warning ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (class_name)); |
| /* APPLE LOCAL begin mainline */ |
| add_class (implementation_template = objc_implementation_context, |
| class_name); |
| /* APPLE LOCAL end mainline */ |
| } |
| |
| /* If a super class has been specified in the implementation, |
| insure it conforms to the one specified in the interface. */ |
| |
| if (super_name |
| && (super_name != CLASS_SUPER_NAME (implementation_template))) |
| { |
| tree previous_name = CLASS_SUPER_NAME (implementation_template); |
| const char *const name = |
| previous_name ? IDENTIFIER_POINTER (previous_name) : ""; |
| error ("conflicting super class name %qs", |
| IDENTIFIER_POINTER (super_name)); |
| error ("previous declaration of %qs", name); |
| } |
| |
| else if (! super_name) |
| { |
| CLASS_SUPER_NAME (objc_implementation_context) |
| = CLASS_SUPER_NAME (implementation_template); |
| } |
| } |
| |
| else if (code == CLASS_INTERFACE_TYPE) |
| { |
| if (lookup_interface (class_name)) |
| #ifdef OBJCPLUS |
| error ("duplicate interface declaration for class %qs", |
| #else |
| warning ("duplicate interface declaration for class %qs", |
| #endif |
| IDENTIFIER_POINTER (class_name)); |
| else |
| /* APPLE LOCAL mainline */ |
| add_class (class, class_name); |
| |
| if (protocol_list) |
| CLASS_PROTOCOL_LIST (class) |
| /* APPLE LOCAL radar 4398221 */ |
| = lookup_and_install_protocols (protocol_list, true); |
| } |
| |
| else if (code == CATEGORY_INTERFACE_TYPE) |
| { |
| tree class_category_is_assoc_with; |
| |
| /* For a category, class_name is really the name of the class that |
| the following set of methods will be associated with. We must |
| find the interface so that can derive the objects template. */ |
| |
| if (!(class_category_is_assoc_with = lookup_interface (class_name))) |
| { |
| error ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (class_name)); |
| exit (FATAL_EXIT_CODE); |
| } |
| else |
| add_category (class_category_is_assoc_with, class); |
| |
| if (protocol_list) |
| CLASS_PROTOCOL_LIST (class) |
| /* APPLE LOCAL radar 4398221 */ |
| = lookup_and_install_protocols (protocol_list, true); |
| } |
| |
| else if (code == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| /* Reset for multiple classes per file. */ |
| method_slot = 0; |
| |
| objc_implementation_context = class; |
| |
| /* For a category, class_name is really the name of the class that |
| the following set of methods will be associated with. We must |
| find the interface so that can derive the objects template. */ |
| |
| if (!(implementation_template = lookup_interface (class_name))) |
| { |
| error ("cannot find interface declaration for %qs", |
| IDENTIFIER_POINTER (class_name)); |
| exit (FATAL_EXIT_CODE); |
| } |
| } |
| return class; |
| } |
| |
| static tree |
| continue_class (tree class) |
| { |
| if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE |
| || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| struct imp_entry *imp_entry; |
| /* APPLE LOCAL mainline */ |
| /* Delete ivar_context */ |
| |
| /* Check consistency of the instance variables. */ |
| |
| if (CLASS_RAW_IVARS (class)) |
| check_ivars (implementation_template, class); |
| |
| /* code generation */ |
| |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); |
| #endif |
| |
| build_private_template (implementation_template); |
| uprivate_record = CLASS_STATIC_TEMPLATE (implementation_template); |
| /* APPLE LOCAL mainline */ |
| /* Remove assignment of ivar_context. */ |
| objc_instance_type = build_pointer_type (uprivate_record); |
| |
| /* APPLE LOCAL radar 4551602 */ |
| imp_entry = (struct imp_entry *) ggc_alloc_cleared (sizeof (struct imp_entry)); |
| |
| imp_entry->next = imp_list; |
| imp_entry->imp_context = class; |
| imp_entry->imp_template = implementation_template; |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| synth_v2_forward_declarations (); |
| imp_entry->class_v2_decl = UOBJC_V2_CLASS_decl; |
| imp_entry->meta_v2_decl = UOBJC_V2_METACLASS_decl; |
| } |
| else |
| { |
| synth_forward_declarations (); |
| imp_entry->class_decl = UOBJC_CLASS_decl; |
| imp_entry->meta_decl = UOBJC_METACLASS_decl; |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| /* APPLE LOCAL mainline */ |
| imp_entry->has_cxx_cdtors = 0; |
| |
| /* Append to front and increment count. */ |
| imp_list = imp_entry; |
| if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) |
| imp_count++; |
| else |
| cat_count++; |
| |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif /* OBJCPLUS */ |
| |
| /* APPLE LOCAL mainline */ |
| return get_class_ivars (implementation_template, true); |
| } |
| |
| else if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) |
| { |
| #ifdef OBJCPLUS |
| push_lang_context (lang_name_c); |
| #endif /* OBJCPLUS */ |
| |
| /* APPLE LOCAL radar 4291785 */ |
| objc_collecting_ivars = 1; |
| build_private_template (class); |
| /* APPLE LOCAL radar 4291785 */ |
| objc_collecting_ivars = 0; |
| |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif /* OBJCPLUS */ |
| |
| return NULL_TREE; |
| } |
| /* APPLE LOCAL radar 4695109 */ |
| /* PROTOCOL_IMPLEMENTATION_TYPE removed */ |
| |
| else |
| return error_mark_node; |
| } |
| |
| /* APPLE LOCAL begin objc new property */ |
| /* This routine issues diagnostics on two mismatched properties passed as argument. |
| - CL_PROP class property |
| - PROPERTY is declared in 'super' class (SUPER is true) or protocol (SUPER is false). |
| - MESS is the string attached to the diagnostic. |
| - NAME property name. |
| */ |
| static void |
| diagnose_property_mismatch (tree cl_prop, tree property, const char *mess, tree name) |
| { |
| /* Check that attributes and types match for protocol and its conforming class. */ |
| /* APPLE LOCAL begin radar 4815061 */ |
| if (PROPERTY_READONLY (cl_prop) == boolean_true_node |
| && PROPERTY_READWRITE (property) == boolean_true_node) |
| warning ("attribute 'readonly' of property %qs restricts attribute 'readwrite' of %qs property in %s", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), |
| IDENTIFIER_POINTER (name), mess); |
| /* APPLE LOCAL end radar 4815061 */ |
| if (PROPERTY_COPY (cl_prop) != PROPERTY_COPY (property)) |
| warning ("property %qs 'copy' attribute does not match %s %qs property", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| else if (PROPERTY_RETAIN (cl_prop) != PROPERTY_RETAIN (property)) |
| warning ("property %qs 'retain' attribute does not match %s %qs property", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| if (PROPERTY_SETTER_NAME (cl_prop) != PROPERTY_SETTER_NAME (property)) |
| warning ("property %qs 'setter' attribute does not match %s %qs property", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| if (PROPERTY_GETTER_NAME (cl_prop) != PROPERTY_GETTER_NAME (property)) |
| warning ("property %qs 'getter' attribute does not match %s %qs property", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| if (comptypes (TREE_TYPE (cl_prop), TREE_TYPE (property)) != 1) |
| warning ("property %qs type does not match %s %qs property type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| if (flag_objc_gc && |
| objc_is_gcable_type (TREE_TYPE (cl_prop)) != objc_is_gcable_type (TREE_TYPE (property))) |
| warning ("property %qs storage type does not match %s %qs property storage type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| /* APPLE LOCAL begin radar 4947014 - objc atomic property */ |
| if (IS_ATOMIC (cl_prop) != IS_ATOMIC (property)) |
| warning ("property %qs and its %s %qs don't have matching 'atomic' attribute", |
| IDENTIFIER_POINTER (PROPERTY_NAME (cl_prop)), mess, |
| IDENTIFIER_POINTER (name)); |
| /* APPLE LOCAL end radar 4947014 - objc atomic property */ |
| } |
| |
| /* This routine goes through list of 'super' class's property list and diagnoses attribute |
| mismatch between those and the same properties declared in the class. */ |
| |
| static void |
| objc_compare_properties_with_super (tree class) |
| { |
| tree super; |
| tree property, cl_prop; |
| |
| if (CLASS_SUPER_NAME (class) == NULL_TREE) |
| return; |
| super = lookup_interface (CLASS_SUPER_NAME (class)); |
| if (super == NULL_TREE) |
| return; |
| for (property = CLASS_PROPERTY_DECL (super); property; |
| property = TREE_CHAIN (property)) |
| if ((cl_prop = lookup_property_in_list (class, DECL_NAME (property)))) |
| diagnose_property_mismatch (cl_prop, property, "super class", CLASS_NAME (super)); |
| } |
| /* APPLE LOCAL end objc new property */ |
| |
| /* APPLE LOCAL begin radar 4564386 */ |
| /* This routine merges all properties declared in protocol but not |
| in the class to the class. */ |
| |
| static void |
| objc_merge_proto_properties_in_class (tree class, tree rproto_list) |
| { |
| tree rproto; |
| for (rproto = rproto_list; rproto; rproto = TREE_CHAIN (rproto)) |
| { |
| tree p = TREE_VALUE (rproto); |
| if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE) |
| { |
| /* APPLE LOCAL objc new property */ |
| tree property, cl_prop; |
| for (property = CLASS_PROPERTY_DECL (p); property; |
| property = TREE_CHAIN (property)) |
| /* APPLE LOCAL objc new property */ |
| if (!(cl_prop = lookup_property_in_list (class, DECL_NAME (property)))) |
| { |
| /* Add the property found in protocol but not in the class to |
| the class's list of properties. */ |
| tree x = copy_node (property); |
| TREE_CHAIN (x) = IMPL_PROPERTY_DECL (class); |
| IMPL_PROPERTY_DECL (class) = x; |
| } |
| /* APPLE LOCAL begin objc new property */ |
| else if (flag_objc_new_property) |
| diagnose_property_mismatch (cl_prop, property, "protocol", PROTOCOL_NAME (p)); |
| /* APPLE LOCAL end objc new property */ |
| /* Search in nested protocols also. */ |
| objc_merge_proto_properties_in_class (class, PROTOCOL_LIST (p)); |
| } |
| } |
| } |
| /* APPLE LOCAL end radar 4564386 */ |
| |
| /* APPLE LOCAL begin C* language */ |
| /* This routine builds a property ivar name. */ |
| |
| static char * |
| objc_build_property_ivar_name (tree property_decl) |
| { |
| static char string[BUFSIZE]; |
| sprintf (string, "_%s", IDENTIFIER_POINTER (PROPERTY_NAME (property_decl))); |
| return string; |
| } |
| |
| /* This routine builds name of the setter synthesized function. */ |
| |
| static char * |
| objc_build_property_setter_name (tree ident, bool delimit_colon) |
| { |
| extern int toupper(int); |
| static char string[BUFSIZE]; |
| if (delimit_colon) |
| sprintf (string, "set%s:", IDENTIFIER_POINTER (ident)); |
| else |
| sprintf (string, "set%s", IDENTIFIER_POINTER (ident)); |
| string[3] = toupper (string[3]); |
| return string; |
| } |
| |
| /* This routine does all the work for generting data and code per each |
| property declared in current implementation. */ |
| |
| static void |
| objc_gen_one_property_data (tree class, tree property, tree class_methods) |
| { |
| /* If getter, check that it is already declared in user code. */ |
| if (PROPERTY_GETTER_NAME (property)) |
| { |
| if (!lookup_method (CLASS_NST_METHODS (class_methods), |
| PROPERTY_GETTER_NAME (property)) |
| && !lookup_method_in_protocol_list (CLASS_PROTOCOL_LIST (class_methods), |
| PROPERTY_GETTER_NAME (property), 0)) |
| error ("property getter %qs not declared in class %qs", |
| IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (property)), |
| IDENTIFIER_POINTER (CLASS_NAME (class_methods))); |
| } |
| /* If setter, check that it is already declared in user code. */ |
| if (PROPERTY_SETTER_NAME (property)) |
| { |
| if (!lookup_method (CLASS_NST_METHODS (class_methods), |
| PROPERTY_SETTER_NAME (property)) |
| && !lookup_method_in_protocol_list (CLASS_PROTOCOL_LIST (class_methods), |
| PROPERTY_SETTER_NAME (property), 0)) |
| error ("property setter %qs not declared in class %qs", |
| IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (property)), |
| IDENTIFIER_POINTER (CLASS_NAME (class_methods))); |
| } |
| /* If ivar attribute specified, check that it is already declared. */ |
| if (PROPERTY_IVAR_NAME (property) |
| && PROPERTY_IVAR_NAME (property) != boolean_true_node) |
| { |
| if (!nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property))) |
| error ("ivar %qs in property declaration must be an existing ivar", |
| IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (property))); |
| } |
| } |
| |
| /* This routine processes an existing getter or setter attribute. |
| It aliases internal property getter or setter to the user implemented |
| getter or setter. */ |
| |
| static void |
| objc_process_getter_setter (tree class, tree property, bool getter) |
| { |
| tree prop_mth_decl; |
| tree prop_getter_mth_decl; |
| tree name_ident; |
| |
| if (getter) |
| /* getter name is same as property name. */ |
| name_ident = PROPERTY_NAME (property); |
| else |
| /* Must synthesize setter name from property name. */ |
| name_ident = get_identifier (objc_build_property_setter_name ( |
| PROPERTY_NAME (property), true)); |
| |
| /* Find declaration of instance method for the property in its class. */ |
| prop_mth_decl = lookup_method (CLASS_NST_METHODS (class), name_ident); |
| |
| if (!prop_mth_decl) |
| return; |
| |
| prop_getter_mth_decl = lookup_method (CLASS_NST_METHODS (objc_implementation_context), |
| getter ? PROPERTY_GETTER_NAME (property) |
| : PROPERTY_SETTER_NAME (property)); |
| |
| if (!prop_getter_mth_decl) |
| return; |
| |
| if (!match_proto_with_proto (prop_getter_mth_decl, prop_mth_decl, 1)) |
| { |
| error ("User %s %qs does not match property %qs type", |
| getter ? "getter" : "setter", |
| IDENTIFIER_POINTER (DECL_NAME (prop_getter_mth_decl)), |
| IDENTIFIER_POINTER (PROPERTY_NAME (property))); |
| return; |
| } |
| /* We alias internal property getter to the user implemented getter by copying relevant |
| entries from user's implementation to the internal one. */ |
| prop_mth_decl = copy_node (prop_mth_decl); |
| METHOD_ENCODING (prop_mth_decl) = METHOD_ENCODING (prop_getter_mth_decl); |
| METHOD_DEFINITION (prop_mth_decl) = METHOD_DEFINITION (prop_getter_mth_decl); |
| objc_add_method (objc_implementation_context, prop_mth_decl, 0, 0); |
| } |
| |
| /* This routine builds the return value of a synthesized getter in a variety |
| of situations. |
| */ |
| static tree |
| objc_build_getter_retval (tree class, tree property, tree ivar_ident) |
| { |
| tree ret_val; |
| |
| if (PROPERTY_BYCOPY (property) == boolean_true_node |
| || PROPERTY_BYREF (property) == boolean_true_node) |
| { |
| /* build call to: |
| objc_getPropertybycopy[byref] (self, _cmd, offsetof (class, ivar)); */ |
| tree cmd; |
| tree field_decl = nested_ivar_lookup (class, ivar_ident); |
| tree offset = field_decl ? byte_position (field_decl) : integer_zero_node; |
| tree func_params, func; |
| gcc_assert (self_decl); |
| cmd = TREE_CHAIN (self_decl); |
| gcc_assert (cmd); |
| func_params = tree_cons (NULL_TREE, self_decl, |
| tree_cons (NULL_TREE, cmd, |
| tree_cons (NULL_TREE, offset, NULL_TREE))); |
| if (PROPERTY_BYCOPY (property) == boolean_true_node) |
| { |
| gcc_assert (umsg_getProperty_bycopy); |
| func = umsg_getProperty_bycopy; |
| } |
| else |
| func = umsg_getProperty_byref; |
| return build_function_call (func, func_params); |
| } |
| else |
| ret_val = objc_lookup_ivar (NULL_TREE, ivar_ident); |
| |
| return ret_val; |
| } |
| |
| /* This routine synthesizes a 'getter' routine. */ |
| |
| static void |
| objc_synthesize_getter (tree class, tree class_method, tree property) |
| { |
| tree fn, decl; |
| tree body; |
| tree ret_val; |
| tree ivar_ident; |
| |
| /* No getter for a class with no 'ivar' attribute. */ |
| if (!PROPERTY_IVAR_NAME (property)) |
| { |
| /* Issue a warning if there is no user-implemented getter. */ |
| if (!lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),PROPERTY_NAME (property))) |
| { |
| bool warn = true; |
| if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| tree category = lookup_category (class, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| if (category |
| && lookup_method (CLASS_NST_METHODS ( |
| category),PROPERTY_NAME (property))) |
| warn = false; |
| } |
| if (warn) |
| warning ("no synthesized or user getter is available for property %qs", |
| IDENTIFIER_POINTER (DECL_NAME (property))); |
| } |
| return; |
| } |
| |
| /* If user has implemented a getter with same name then do nothing. */ |
| if (lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),PROPERTY_NAME (property))) |
| return; |
| /* Find declaration of the property in the interface. There must be one. */ |
| decl = lookup_method (CLASS_NST_METHODS (class_method), |
| PROPERTY_NAME (property)); |
| /* If one not declared in the inerface, this condition has already been reported |
| as user error (because property was not declared in the interface. */ |
| if (!decl) |
| return; |
| |
| if (PROPERTY_BYCOPY (property) == boolean_true_node |
| && !umsg_getProperty_bycopy) |
| declare_prototype_property_bycopy (); |
| |
| objc_inherit_code = INSTANCE_METHOD_DECL; |
| objc_start_method_definition (copy_node (decl), NULL_TREE); |
| body = c_begin_compound_stmt (true); |
| /* return self->_property_name; */ |
| /* If user specified an ivar, us it in generation of the getter. */ |
| ivar_ident = (PROPERTY_IVAR_NAME (property) != boolean_true_node) |
| ? PROPERTY_IVAR_NAME (property) |
| : get_identifier (objc_build_property_ivar_name (property)); |
| ret_val = objc_build_getter_retval (class, property, ivar_ident); |
| |
| if (ret_val) |
| { |
| ret_val = objc_generate_weak_read (ret_val); |
| #ifdef OBJCPLUS |
| finish_return_stmt (ret_val); |
| #else |
| (void)c_finish_return (ret_val); |
| #endif |
| } |
| add_stmt (c_end_compound_stmt (body, true)); |
| fn = current_function_decl; |
| #ifdef OBJCPLUS |
| finish_function (); |
| #endif |
| objc_finish_method_definition (fn); |
| |
| } |
| |
| /* This routine builds a single statement in a synthesized 'setter' function |
| in a variety of situations. */ |
| |
| static tree |
| objc_build_setter_stmt (tree class, tree property, tree ivar_ident) |
| { |
| tree lhs; |
| |
| if (PROPERTY_BYCOPY (property) == boolean_true_node |
| || PROPERTY_BYREF (property) == boolean_true_node) |
| { |
| /* build call to: |
| objc_setPropertybycopy[byref] (self, _cmd, arg, offsetof (class, ivar)); */ |
| tree cmd; |
| tree arg = lookup_name (get_identifier ("_value")); |
| tree field_decl = nested_ivar_lookup (class, ivar_ident); |
| tree offset = field_decl ? byte_position (field_decl) : integer_zero_node; |
| tree func_params, func; |
| gcc_assert (self_decl); |
| cmd = TREE_CHAIN (self_decl); |
| gcc_assert (cmd); |
| gcc_assert (arg); |
| func_params = tree_cons (NULL_TREE, self_decl, |
| tree_cons (NULL_TREE, cmd, |
| tree_cons (NULL_TREE, arg, |
| tree_cons (NULL_TREE, offset, |
| NULL_TREE)))); |
| if (PROPERTY_BYCOPY (property) == boolean_true_node) |
| { |
| gcc_assert (umsg_setProperty_bycopy); |
| func = umsg_setProperty_bycopy; |
| } |
| else |
| func = umsg_setProperty_byref; |
| return build_function_call (func, func_params); |
| } |
| |
| /* Common case. */ |
| lhs = objc_lookup_ivar (NULL_TREE, ivar_ident); |
| /* If ivar attribute is not a user declared attribute, this condition has |
| already been repored as error. */ |
| gcc_assert (lhs); |
| |
| if (lhs) |
| { |
| int save_flag_objc_gc = flag_objc_gc; |
| tree store; |
| tree rhs = lookup_name (get_identifier ("_value")); |
| /* Recover when method does not have '_value' argument. This is because user |
| provided its own accessor and for which an error is already issued. */ |
| if (!rhs) |
| rhs = lhs; |
| /* For 'weak' property, must generate objc_assign_weak regardless of -fobjc-gc */ |
| flag_objc_gc = 1; |
| store = build_modify_expr (lhs, NOP_EXPR, rhs); |
| flag_objc_gc = save_flag_objc_gc; |
| return store; |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine synthesizes a 'setter' routine. */ |
| |
| static void |
| objc_synthesize_setter (tree class, tree class_method, tree property) |
| { |
| tree fn, decl, ivar_ident, stmt; |
| tree body; |
| char *setter_name; |
| tree setter_ident; |
| |
| setter_name = objc_build_property_setter_name ( |
| PROPERTY_NAME (property), true); |
| setter_ident = get_identifier (setter_name); |
| |
| if (!PROPERTY_IVAR_NAME (property)) |
| { |
| /* Issue a warning if there is no user-implemented getter. */ |
| if (!lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),setter_ident)) |
| { |
| bool warn = true; |
| if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| tree category = lookup_category (class, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| if (category |
| && lookup_method (CLASS_NST_METHODS ( |
| category),setter_ident)) |
| warn = false; |
| } |
| if (warn) |
| warning ("no synthesized or user setter is available for property %qs", |
| IDENTIFIER_POINTER (DECL_NAME (property))); |
| } |
| return; |
| } |
| |
| /* If user has implemented a setter with same name then do nothing. */ |
| if (lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),setter_ident)) |
| return; |
| |
| /* Find declaration of the property in the interface. There must be one. */ |
| decl = lookup_method (CLASS_NST_METHODS (class_method), setter_ident); |
| /* If one not declared in the inerface, this condition has already been reported |
| as user error (because property was not declared in the interface. */ |
| if (!decl) |
| return; |
| |
| if (PROPERTY_BYCOPY (property) == boolean_true_node |
| && !umsg_setProperty_bycopy) |
| declare_prototype_property_bycopy (); |
| |
| objc_inherit_code = INSTANCE_METHOD_DECL; |
| objc_start_method_definition (copy_node (decl), NULL_TREE); |
| body = c_begin_compound_stmt (true); |
| /* _property_name = _value; */ |
| /* If user specified an ivar, us it in generation of the setter. */ |
| ivar_ident = (PROPERTY_IVAR_NAME (property) != boolean_true_node) |
| ? PROPERTY_IVAR_NAME (property) |
| : get_identifier (objc_build_property_ivar_name (property)); |
| stmt = objc_build_setter_stmt (class, property, ivar_ident); |
| if (stmt) |
| add_stmt (stmt); |
| add_stmt (c_end_compound_stmt (body, true)); |
| fn = current_function_decl; |
| #ifdef OBJCPLUS |
| finish_function (); |
| #endif |
| objc_finish_method_definition (fn); |
| } |
| |
| /* This routine synthesizes a 'getter' routine for new property. */ |
| static void |
| objc_synthesize_new_getter (tree class, tree class_method, tree property) |
| { |
| tree decl,body,ret_val,fn; |
| /* If user has implemented a getter with same name then do nothing. */ |
| if (lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),PROPERTY_NAME (property))) |
| return; |
| |
| objc_lookup_property_ivar (class, property); |
| |
| /* Find declaration of the property in the interface. There must be one. */ |
| /* APPLE LOCAL radar 5040740 */ |
| decl = lookup_nested_method (class_method, PROPERTY_NAME (property)); |
| /* If one not declared in the inerface, this condition has already been reported |
| as user error (because property was not declared in the interface. */ |
| if (!decl) |
| return; |
| |
| /* APPLE LOCAL begin radar 4947014 - objc atomic property */ |
| if (!umsg_GetAtomicProperty || !umsg_CopyAtomicStruct) |
| declare_atomic_property_api (); |
| objc_inherit_code = INSTANCE_METHOD_DECL; |
| objc_start_method_definition (copy_node (decl), NULL_TREE); |
| body = c_begin_compound_stmt (true); |
| if (!flag_objc_gc_only && IS_ATOMIC (property) |
| && (PROPERTY_COPY (property) == boolean_true_node |
| || PROPERTY_RETAIN (property) == boolean_true_node)) |
| { |
| /* build call to: |
| id objc_getProperty (self, _cmd, offsetof (class, ivar), isAtomic) */ |
| tree cmd; |
| tree field_decl = nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property)); |
| tree offset = field_decl ? byte_position (field_decl) : integer_zero_node; |
| tree func_params, func; |
| gcc_assert (self_decl); |
| cmd = TREE_CHAIN (self_decl); |
| gcc_assert (cmd); |
| func_params = tree_cons (NULL_TREE, self_decl, |
| tree_cons (NULL_TREE, cmd, |
| tree_cons (NULL_TREE, offset, |
| tree_cons (NULL_TREE, boolean_true_node, NULL_TREE)))); |
| func = umsg_GetAtomicProperty; |
| ret_val = build_function_call (func, func_params); |
| } |
| else |
| { |
| bool isStrong = false; |
| tree ret_type = TREE_TYPE (TREE_TYPE (current_function_decl)); |
| /* return self->ivar_name; */ |
| ret_val = build_ivar_reference (PROPERTY_IVAR_NAME (property)); |
| |
| /* Handle struct-valued functions */ |
| if ((TREE_CODE (ret_type) == RECORD_TYPE || TREE_CODE (ret_type) == UNION_TYPE) |
| /* APPLE LOCAL radar 5080710 */ |
| && (TREE_ADDRESSABLE (ret_type) || targetm.calls.return_in_memory (ret_type, 0)) |
| && (IS_ATOMIC (property) || |
| (isStrong = ((flag_objc_gc || flag_objc_gc_only) |
| && aggregate_contains_objc_pointer (ret_type))))) |
| { |
| /* struct something tmp; |
| objc_copyStruct (&tmp, &structIvar, sizeof (struct something), isAtomic, false); |
| return tmp; |
| */ |
| tree decl = create_tmp_var_raw (ret_type, NULL); |
| tree isAtomic = (IS_ATOMIC (property) ? boolean_true_node : boolean_false_node); |
| tree hasStrong = (isStrong ? boolean_true_node : boolean_false_node); |
| tree size_ret_val = build_int_cst_wide (NULL_TREE, |
| TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ret_type)), |
| TREE_INT_CST_HIGH (TYPE_SIZE_UNIT (ret_type))); |
| tree func_params, stmt, tmp; |
| lang_hooks.decls.pushdecl (decl); |
| tmp = build_fold_addr_expr (decl); |
| ret_val = build_fold_addr_expr (ret_val); |
| func_params = tree_cons (NULL_TREE, tmp, |
| tree_cons (NULL_TREE, ret_val, |
| tree_cons (NULL_TREE, size_ret_val, |
| tree_cons (NULL_TREE, isAtomic, |
| tree_cons (NULL_TREE, hasStrong, NULL_TREE))))); |
| stmt = build_function_call (umsg_CopyAtomicStruct, func_params); |
| add_stmt (stmt); |
| ret_val = decl; |
| } |
| } |
| /* APPLE LOCAL end radar 4947014 - objc atomic property */ |
| |
| if (ret_val) |
| { |
| ret_val = objc_generate_weak_read (ret_val); |
| #ifdef OBJCPLUS |
| finish_return_stmt (ret_val); |
| #else |
| (void)c_finish_return (ret_val); |
| #endif |
| } |
| add_stmt (c_end_compound_stmt (body, true)); |
| fn = current_function_decl; |
| #ifdef OBJCPLUS |
| finish_function (); |
| #endif |
| objc_finish_method_definition (fn); |
| } |
| |
| /* This routine synthesizes a 'setter' routine for new property. */ |
| static void |
| objc_synthesize_new_setter (tree class, tree class_method, tree property) |
| { |
| tree fn, decl, stmt; |
| tree body, lhs; |
| char *setter_name = objc_build_property_setter_name (PROPERTY_NAME (property), true); |
| tree setter_ident = get_identifier (setter_name); |
| |
| /* If user has implemented a setter with same name then do nothing. */ |
| if (lookup_method (CLASS_NST_METHODS ( |
| objc_implementation_context),setter_ident)) |
| return; |
| |
| objc_lookup_property_ivar (class, property); |
| |
| /* Find declaration of the property in the interface. There must be one. */ |
| /* APPLE LOCAL radar 5040740 */ |
| decl = lookup_nested_method (class_method, setter_ident); |
| /* If not declared in the inerface, this condition has already been reported |
| as user error (because property was not declared in the interface. */ |
| if (!decl) |
| return; |
| |
| /* APPLE LOCAL begin radar 4947014 - objc atomic property */ |
| if (!umsg_SetAtomicProperty || !umsg_CopyAtomicStruct) |
| declare_atomic_property_api (); |
| objc_inherit_code = INSTANCE_METHOD_DECL; |
| objc_start_method_definition (copy_node (decl), NULL_TREE); |
| body = c_begin_compound_stmt (true); |
| /* property_name = _value; */ |
| stmt = NULL_TREE; |
| if (PROPERTY_COPY (property) == boolean_true_node |
| || (!flag_objc_gc_only && PROPERTY_RETAIN (property) == boolean_true_node)) |
| { |
| /* build call to: |
| objc_setProperty (self, _cmd, offsetof (class, ivar), arg, [true|false], [true|false]) */ |
| tree cmd, arg; |
| tree field_decl = nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property)); |
| tree offset = field_decl ? byte_position (field_decl) : integer_zero_node; |
| tree func_params, func; |
| tree shouldCopy = (PROPERTY_COPY (property) == boolean_true_node) |
| ? boolean_true_node : boolean_false_node; |
| tree isAtomic = IS_ATOMIC (property) ? boolean_true_node : boolean_false_node; |
| gcc_assert (self_decl); |
| cmd = TREE_CHAIN (self_decl); |
| gcc_assert (cmd); |
| arg = TREE_CHAIN (cmd); |
| gcc_assert (arg); |
| func_params = tree_cons (NULL_TREE, self_decl, |
| tree_cons (NULL_TREE, cmd, |
| tree_cons (NULL_TREE, offset, |
| tree_cons (NULL_TREE, arg, |
| tree_cons (NULL_TREE, isAtomic, |
| tree_cons (NULL_TREE, shouldCopy, NULL_TREE)))))); |
| func = umsg_SetAtomicProperty; |
| stmt = build_function_call (func, func_params); |
| } |
| else |
| { |
| tree ivar_type; |
| tree rhs = lookup_name (get_identifier ("_value")); |
| lhs = build_ivar_reference (PROPERTY_IVAR_NAME (property)); |
| /* Recover when method does not have '_value' argument. This is because user |
| provided its own accessor and for which an error is already issued. */ |
| if (!rhs) |
| rhs = lhs; |
| |
| ivar_type = TREE_TYPE (lhs); |
| if ((TREE_CODE (ivar_type) == RECORD_TYPE || TREE_CODE (ivar_type) == UNION_TYPE) |
| /* APPLE LOCAL begin radar 5080710 */ |
| && IS_ATOMIC (property) |
| && (TREE_ADDRESSABLE (ivar_type) || targetm.calls.return_in_memory (ivar_type, 0))) |
| /* APPLE LOCAL end radar 5080710 */ |
| { |
| /* objc_copyStruct (&structIvar, &value, sizeof (struct something), true, false); */ |
| tree func_params; |
| tree isAtomic = boolean_true_node; |
| tree hasStrong = boolean_false_node; |
| tree addr_structIvar = build_fold_addr_expr (lhs); |
| tree size_struct = build_int_cst_wide (NULL_TREE, |
| TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ivar_type)), |
| TREE_INT_CST_HIGH (TYPE_SIZE_UNIT (ivar_type))); |
| rhs = build_fold_addr_expr (rhs); |
| func_params = tree_cons (NULL_TREE, addr_structIvar, |
| tree_cons (NULL_TREE, rhs, |
| tree_cons (NULL_TREE, size_struct, |
| tree_cons (NULL_TREE, isAtomic, |
| tree_cons (NULL_TREE, hasStrong, NULL_TREE))))); |
| stmt = build_function_call (umsg_CopyAtomicStruct, func_params); |
| } |
| else |
| { |
| /* Common case */ |
| int save_flag_objc_gc = flag_objc_gc; |
| /* For 'weak' property, must generate objc_assign_weak regardless of -fobjc-gc */ |
| flag_objc_gc = 1; |
| stmt = build_modify_expr (lhs, NOP_EXPR, rhs); |
| flag_objc_gc = save_flag_objc_gc; |
| } |
| } |
| /* APPLE LOCAL end radar 4947014 - objc atomic property */ |
| |
| if (stmt) |
| add_stmt (stmt); |
| add_stmt (c_end_compound_stmt (body, true)); |
| fn = current_function_decl; |
| #ifdef OBJCPLUS |
| finish_function (); |
| #endif |
| objc_finish_method_definition (fn); |
| } |
| |
| /* APPLE LOCAL begin radar 4966565 */ |
| /* This routine retrievs the base class implementation of the category implementation |
| or NULL_TREE if one not found. CATEGORY_IMPL is to be CATEGORY_IMPLEMENTATION_TYPE |
| and BASE_CLASS is CLASS_INTERFACE_TYPE of base class of this category. */ |
| |
| static tree |
| get_category_base_class_impl (tree category_impl, tree base_class) |
| { |
| if (TREE_CODE (category_impl) == CATEGORY_IMPLEMENTATION_TYPE |
| && TREE_CODE (base_class) == CLASS_INTERFACE_TYPE) |
| { |
| struct imp_entry *impent; |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE |
| && impent->imp_template == base_class) |
| return impent->imp_context; |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine returns true, if accessor is implemenated in base @implementation of the given |
| category @implementation; false otherwise. CATEGORY_IMPL is to be CATEGORY_IMPLEMENTATION_TYPE |
| and BASE_CLASS is CLASS_INTERFACE_TYPE of base class of this category. */ |
| |
| static bool |
| lookup_accessor_in_base_class_impl (tree category_impl, tree base_class, tree method_ident) |
| { |
| tree base_impl = get_category_base_class_impl (category_impl, base_class); |
| return (base_impl != NULL_TREE) |
| && lookup_method (CLASS_NST_METHODS (base_impl), method_ident); |
| } |
| /* APPLE LOCAL end radar 4966565 */ |
| |
| /* Main routine to generate code/data for all the property information for |
| current implemenation (class or category). CLASS is the interface where |
| ivars are declared in. CLASS_METHODS is where methods are found which |
| could be a class or a category depending on wheter we are implementing |
| property of a class or a category. */ |
| |
| static void |
| objc_gen_property_data (tree class, tree class_methods) |
| { |
| tree x; |
| /* Merge any property declared in interface but not in |
| implementation to implementation. */ |
| objc_v2_merge_property (); |
| |
| if (flag_objc_new_property) |
| { |
| /* Synthesize accessors for those properties specified an @synthesize */ |
| for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) |
| { |
| /* Skip dynamic property. */ |
| if (PROPERTY_DYNAMIC (x) == boolean_true_node) |
| continue; |
| else if (PROPERTY_IVAR_NAME (x)) |
| { |
| /* property 'ivar' is set only when @synthesize is specified. */ |
| objc_synthesize_new_getter (class, class_methods, x); |
| if (PROPERTY_READONLY (x) == boolean_false_node) |
| objc_synthesize_new_setter (class, class_methods, x); |
| } |
| else |
| { |
| if (PROPERTY_GETTER_NAME (x)) |
| objc_process_getter_setter (class_methods, x, true); |
| /* APPLE LOCAL begin radar 4966565 */ |
| else if (!lookup_method (CLASS_NST_METHODS (objc_implementation_context), PROPERTY_NAME (x)) |
| && !lookup_accessor_in_base_class_impl (objc_implementation_context, class, |
| PROPERTY_NAME (x))) |
| /* APPLE LOCAL end radar 4966565 */ |
| warning ("property %qs requires method '-%s' to be defined - use @synthesize, @dynamic or provide a method implementation", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x)), IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| if (PROPERTY_READONLY (x) == boolean_false_node |
| && PROPERTY_SETTER_NAME (x)) |
| objc_process_getter_setter (class_methods, x, false); |
| else if (PROPERTY_READONLY (x) == boolean_false_node) |
| { |
| char *setter_string_name = objc_build_property_setter_name (PROPERTY_NAME (x), true); |
| /* APPLE LOCAL begin radar 4966565 */ |
| tree ident = get_identifier (setter_string_name); |
| if (!lookup_method (CLASS_NST_METHODS (objc_implementation_context), ident) |
| && !lookup_accessor_in_base_class_impl (objc_implementation_context, class, ident)) |
| warning ("property %qs requires the method '%s' to be defined - use @synthesize, @dynamic or provide a method implementation", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x)), setter_string_name); |
| /* APPLE LOCAL end radar 4966565 */ |
| } |
| } |
| } |
| return; |
| } |
| |
| for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) |
| objc_gen_one_property_data (class, x, class_methods); |
| |
| /* Synthesize all getters for properties. */ |
| for (x = IMPL_PROPERTY_DECL (objc_implementation_context); x; x = TREE_CHAIN (x)) |
| { |
| /* Skip dynamic property. */ |
| if (PROPERTY_DYNAMIC (x) == boolean_true_node) |
| continue; |
| |
| /* Property has a getter attribute, no need to synthesize one. */ |
| if (PROPERTY_GETTER_NAME (x) == NULL_TREE) |
| objc_synthesize_getter (class, class_methods, x); |
| else |
| objc_process_getter_setter (class_methods, x, true); |
| |
| if (PROPERTY_READONLY (x) == boolean_false_node) |
| { |
| /* not a readonly property. */ |
| if (PROPERTY_SETTER_NAME (x) == NULL_TREE) |
| objc_synthesize_setter (class, class_methods, x); |
| else |
| objc_process_getter_setter (class_methods, x, false); |
| } |
| } |
| } |
| |
| /* This routine creates an ivar and adds it to current class's ivar list. */ |
| |
| static void |
| objc_add_internal_ivar (tree class, tree property, const char *ivar_name) |
| { |
| tree record = CLASS_STATIC_TEMPLATE (class); |
| tree type = TREE_TYPE (property); |
| tree field_decl, field; |
| field_decl = create_field_decl (type, |
| ivar_name ? ivar_name |
| : objc_build_property_ivar_name (property)); |
| DECL_CONTEXT (field_decl) = record; |
| (void) add_instance_variable (class, |
| 1, field_decl); |
| if ((!flag_objc_new_property && PROPERTY_WEAK (property) == boolean_true_node) |
| || (flag_objc_new_property && objc_is_strong_p (type) == -1)) |
| { |
| tree attribute = tree_cons (NULL_TREE, get_identifier ("weak"), NULL_TREE); |
| attribute = tree_cons (get_identifier ("objc_gc"), attribute, NULL_TREE); |
| decl_attributes (&field_decl, attribute, 0); |
| } |
| /* Unfortunately, CLASS_IVARS is completed when interface is completed. |
| Must add the new ivar by hand to its list here. */ |
| |
| #ifdef OBJCPLUS |
| /* Must insert this field before the TYPE_DECL node in the chain of fields. */ |
| field = CLASS_IVARS (class); |
| while (field && TREE_CHAIN (field) |
| && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL) |
| field = TREE_CHAIN (field); |
| if (field && TREE_CHAIN (field) |
| && TREE_CODE (TREE_CHAIN (field)) != FIELD_DECL) |
| { |
| tree nf = copy_node (field_decl); |
| TREE_CHAIN (nf) = TREE_CHAIN (field); |
| TREE_CHAIN (field) = nf; |
| } |
| else |
| #endif /* OBJCPLUS */ |
| CLASS_IVARS (class) = chainon (CLASS_IVARS (class), |
| copy_node (field_decl)); |
| gcc_assert (record); |
| /* Must also add this ivar to the end of list of fields for this class. */ |
| field = TYPE_FIELDS (record); |
| if (field && field != CLASS_IVARS (class)) |
| /* class has a hidden field, attach ivar list after the hiddent field. */ |
| TREE_CHAIN (field) = CLASS_IVARS (class); |
| else |
| TYPE_FIELDS (record) = CLASS_IVARS (class); |
| /* Ugh, must recalculate struct layout since an ivar was added. */ |
| TYPE_SIZE (record) = 0; |
| layout_type (record); |
| } |
| |
| /* This routine looks up PROPERTY's 'ivar' in the CLASS. If one not found, it inserts one |
| and may issue error for 32-bit abi (fragile 'ivar') in this case. */ |
| static void |
| objc_lookup_property_ivar (tree class, tree property) |
| { |
| /* Check for an existing or synthesized 'ivar' and diagnose as needed. */ |
| tree ivar_name = PROPERTY_IVAR_NAME (property); |
| if (!nested_ivar_lookup (class, PROPERTY_IVAR_NAME (property))) |
| { |
| if (flag_objc_abi <= 1) |
| error ("synthesized property %qs must either be named the same as a compatible ivar or must explicitly name an ivar", |
| IDENTIFIER_POINTER (PROPERTY_NAME (property))); |
| objc_add_internal_ivar (class, property, IDENTIFIER_POINTER (ivar_name)); |
| } |
| } |
| /* APPLE LOCAL end C* language */ |
| |
| /* APPLE LOCAL begin radar 4965989 */ |
| /* This routine merges all methods declared or synthesized in anonymous class |
| into PRIMARY primary class. CHAIN is the list of methods in anonymous category. |
| MTYPE is '+' for class methods and '-' for instance methods. |
| */ |
| static void |
| objc_merge_methods (tree primary, tree chain ,int mtype) |
| { |
| while (chain) |
| { |
| tree method = chain; |
| chain = TREE_CHAIN (chain); |
| objc_add_method (primary, method, mtype == '+', false); |
| if (mtype == '-' && METHOD_PROPERTY_CONTEXT (method)) |
| { |
| tree x; |
| for (x = CLASS_PROPERTY_DECL (primary); x; x = TREE_CHAIN (x)) |
| { |
| if (PROPERTY_NAME (x) == PROPERTY_NAME (METHOD_PROPERTY_CONTEXT (method))) |
| { |
| METHOD_PROPERTY_CONTEXT (method) = x; |
| break; |
| } |
| } |
| } |
| } |
| } |
| /* APPLE LOCAL end radar 4965989 */ |
| |
| /* APPLE LOCAL begin radar 4968128 */ |
| static tree |
| strip_end_colon (tree ident) |
| { |
| size_t pos = IDENTIFIER_LENGTH (ident) - 1; |
| gcc_assert (IDENTIFIER_LENGTH (ident) > 0 && IDENTIFIER_POINTER (ident)[pos] == ':'); |
| return get_identifier_with_length (IDENTIFIER_POINTER (ident), pos); |
| } |
| /* APPLE LOCAL end radar 4968128 */ |
| |
| /* This is called once we see the "@end" in an interface/implementation. */ |
| |
| static void |
| finish_class (tree class) |
| { |
| if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| /* All code generation is done in finish_objc. */ |
| |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| /* Generate what needed for property; setters, getters, etc. */ |
| objc_gen_property_data (implementation_template, implementation_template); |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| if (implementation_template != objc_implementation_context) |
| { |
| /* Ensure that all method listed in the interface contain bodies. */ |
| check_methods (CLASS_CLS_METHODS (implementation_template), |
| /* APPLE LOCAL radar 4568791, 4359757 */ |
| '+', NULL_TREE); |
| check_methods (CLASS_NST_METHODS (implementation_template), |
| /* APPLE LOCAL radar 4568791, 4359757 */ |
| '-', NULL_TREE); |
| |
| if (CLASS_PROTOCOL_LIST (implementation_template)) |
| check_protocols (CLASS_PROTOCOL_LIST (implementation_template), |
| "class", |
| /* APPLE LOCAL begin radar 4568791 */ |
| IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)), |
| implementation_template); |
| /* APPLE LOCAL end radar 4568791 */ |
| } |
| } |
| |
| else if (TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (class)); |
| |
| if (category) |
| { |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| /* Generate what needed for property; setters, getters, etc. */ |
| objc_gen_property_data (implementation_template, category); |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| /* Ensure all method listed in the interface contain bodies. */ |
| /* APPLE LOCAL begin radar 4568791 */ |
| check_methods (CLASS_CLS_METHODS (category), |
| /* APPLE LOCAL radar 4359757 */ |
| '+', NULL_TREE); |
| check_methods (CLASS_NST_METHODS (category), |
| /* APPLE LOCAL radar 4359757 */ |
| '-', NULL_TREE); |
| |
| if (CLASS_PROTOCOL_LIST (category)) |
| check_protocols (CLASS_PROTOCOL_LIST (category), |
| "category", |
| IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)), |
| implementation_template); |
| } |
| } |
| /* APPLE LOCAL end radar 4568791 */ |
| /* APPLE LOCAL radar 4695109 */ |
| /* PROTOCOL_IMPLEMENTATION_TYPE removed */ |
| /* APPLE LOCAL begin objc new property */ |
| else if (flag_objc_new_property) |
| { |
| tree x; |
| if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) |
| { |
| objc_compare_properties_with_super (class); |
| objc_merge_proto_properties_in_class (class, CLASS_PROTOCOL_LIST (class)); |
| } |
| /* Process properties of the class. */ |
| for (x = CLASS_PROPERTY_DECL (class); x; x = TREE_CHAIN (x)) |
| { |
| tree getter_decl, setter_decl; |
| tree type = TREE_TYPE (x); |
| tree prop_name = PROPERTY_NAME (x); |
| if (PROPERTY_GETTER_NAME (x) == NULL_TREE) |
| { |
| /* No 'getter=name' attribute specified. Find the default getter and |
| if one not found, add one. */ |
| getter_decl = lookup_method (CLASS_NST_METHODS (class), prop_name); |
| if (getter_decl) |
| { |
| if (comptypes (type, TREE_VALUE (TREE_TYPE (getter_decl))) != 1) |
| /* APPLE LOCAL radar 4815054 */ |
| error ("type of accessor does not match the type of property %qs", |
| IDENTIFIER_POINTER (prop_name)); |
| if (METHOD_SEL_ARGS (getter_decl) != NULL_TREE) |
| error ("accessor %<%c%s%> cannot have any argument", |
| '-', IDENTIFIER_POINTER (prop_name)); |
| } |
| else |
| { |
| tree rettype = build_tree_list (NULL_TREE, type); |
| getter_decl = build_method_decl (INSTANCE_METHOD_DECL, |
| rettype, prop_name, NULL_TREE); |
| objc_add_method (class, getter_decl, false, false); |
| } |
| METHOD_PROPERTY_CONTEXT (getter_decl) = x; |
| } |
| else |
| { |
| /* getter = getter_name */ |
| getter_decl = lookup_method (CLASS_NST_METHODS (class), PROPERTY_GETTER_NAME (x)); |
| if (!getter_decl) |
| { |
| /* getter in 'getter' declaration has no declaration in this class. Provide |
| one here. */ |
| tree rettype = build_tree_list (NULL_TREE, type); |
| getter_decl = build_method_decl (INSTANCE_METHOD_DECL, |
| rettype, PROPERTY_GETTER_NAME (x), |
| NULL_TREE); |
| objc_add_method (class, getter_decl, false, false); |
| } |
| else |
| { |
| if (comptypes (type, TREE_VALUE (TREE_TYPE (getter_decl))) != 1) |
| /* APPLE LOCAL radar 4815054 */ |
| error ("type of existing accessor %<%c%s%> does not match the type of property %qs", |
| '-', IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (x)), IDENTIFIER_POINTER (prop_name)); |
| if (METHOD_SEL_ARGS (getter_decl) != NULL_TREE) |
| error ("existing accessor %<%c%s%> cannot have any argument", |
| '-', IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (x))); |
| } |
| METHOD_PROPERTY_CONTEXT (getter_decl) = x; |
| } |
| /* APPLE LOCAL radar 4712415 */ |
| TREE_DEPRECATED (getter_decl) = TREE_DEPRECATED (x); |
| if (PROPERTY_SETTER_NAME (x) == NULL_TREE |
| && PROPERTY_READONLY (x) == boolean_false_node) |
| { |
| /* No setter is specified and it is not a 'readonly' property. Generate an instance |
| or find an existing one. */ |
| tree setter_name = get_identifier (objc_build_property_setter_name ( |
| prop_name, true)); |
| setter_decl = lookup_method (CLASS_NST_METHODS (class), setter_name); |
| if (setter_decl) |
| { |
| /* An eixsting setter must take a single argument of type matching the property's |
| type and must return 'void'. */ |
| if (TREE_VALUE (TREE_TYPE (setter_decl)) != void_type_node) |
| error ("setter %<%c%s%> type must be 'void'", |
| '-', IDENTIFIER_POINTER (prop_name)); |
| if (!METHOD_SEL_ARGS (setter_decl)) |
| error ("setter %<%c%s%> has no argument", '-', IDENTIFIER_POINTER (prop_name)); |
| else |
| { |
| tree akey = METHOD_SEL_ARGS (setter_decl); |
| tree arg_type = TREE_VALUE (TREE_TYPE (akey)); |
| if (comptypes (type, arg_type) != 1) |
| error ("setter %<%c%s%> argument type does not match property type", |
| '-', IDENTIFIER_POINTER (prop_name)); |
| akey = TREE_CHAIN (akey); |
| if (akey) |
| error ("setter %<%c%s%> has too many arguments", |
| '-', IDENTIFIER_POINTER (prop_name)); |
| } |
| /* APPLE LOCAL radar 4712415 */ |
| TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); |
| } |
| else |
| objc_add_property_setter_method (class, x); |
| } |
| else if (PROPERTY_SETTER_NAME (x)) |
| { |
| if (PROPERTY_READONLY (x) == boolean_true_node) |
| error ("setter cannot be specified for a 'readonly' property %qs" |
| , IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| else |
| { |
| /* User setter is specified in the attribute. See if it is of correct form. */ |
| setter_decl = lookup_method (CLASS_NST_METHODS (class), PROPERTY_SETTER_NAME (x)); |
| if (!setter_decl) |
| { |
| tree prop; |
| /* setter declared in 'setter' attribute has no declaration in current |
| class. Provide this declaration internally. */ |
| tree arg_type = build_tree_list (NULL_TREE, type); |
| tree arg_name = get_identifier ("_value"); |
| /* APPLE LOCAL radar 4968128 */ |
| tree selector = objc_build_keyword_decl (strip_end_colon (PROPERTY_SETTER_NAME (x)), |
| arg_type, arg_name); |
| setter_decl = build_method_decl (INSTANCE_METHOD_DECL, |
| build_tree_list (NULL_TREE, void_type_node), selector, |
| build_tree_list (NULL_TREE, NULL_TREE)); |
| objc_add_method (class, setter_decl, false, false); |
| METHOD_PROPERTY_CONTEXT (setter_decl) = x; |
| /* Issue error if setter name matches a property name. */ |
| for (prop = CLASS_PROPERTY_DECL (class); prop; prop = TREE_CHAIN (prop)) |
| { |
| const char *string = IDENTIFIER_POINTER (PROPERTY_NAME (prop)); |
| if (!strncmp (IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)), string, |
| strlen (IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))) -1 )) |
| { |
| error ("setter name %qs matches property %qs name", |
| IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)), string); |
| break; |
| } |
| } |
| } |
| else |
| { |
| if (TREE_VALUE (TREE_TYPE (setter_decl)) != void_type_node) |
| error ("user setter's type must be 'void' for property %qs", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| if (!METHOD_SEL_ARGS (setter_decl)) |
| error ("setter %<%c%s%> has no argument", |
| '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); |
| else |
| { |
| tree akey = METHOD_SEL_ARGS (setter_decl); |
| if (akey) |
| { |
| tree arg_type = TREE_VALUE (TREE_TYPE (akey)); |
| if (comptypes (type, arg_type) != 1) |
| /* APPLE LOCAL radar 4815054 */ |
| error ("argument type of setter %<%c%s%> does not match the type of property %qs", |
| '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x)), |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| akey = TREE_CHAIN (akey); |
| if (akey) |
| error ("specified setter %<%c%s%> has too many arguments", |
| '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); |
| } |
| else |
| error ("specified setter %<%c%s%> has no argument", |
| '-', IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); |
| } |
| } |
| /* APPLE LOCAL radar 4712415 */ |
| TREE_DEPRECATED (setter_decl) = TREE_DEPRECATED (x); |
| } |
| } |
| if (PROPERTY_RETAIN (x) == boolean_true_node) |
| { |
| if (!objc_type_valid_for_messaging (type)) |
| error ("property %qs with 'retain' attribute must be of object type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| if (objc_is_gcable_type (type) == -1) |
| error ("property %qs with 'retain' attribute cannot be used with __weak storage specifier", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| } |
| if (PROPERTY_COPY (x) == boolean_true_node) |
| { |
| if (!objc_type_valid_for_messaging (type)) |
| error ("property %qs with 'copy' attribute must be of object type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| if (objc_is_gcable_type (type) == -1) |
| error ("property %qs with 'copy' attribute cannot be used with __weak storage specifier", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| } |
| } |
| /* APPLE LOCAL begin radar 4965989 */ |
| /* New anonymous category */ |
| if (ANONYMOUS_CATEGORY (class)) |
| { |
| /* Merge all anonymous category's methods (including setter/getter) into its primary class. */ |
| tree primary = lookup_interface (CLASS_NAME (class)); |
| if (primary) |
| { |
| objc_merge_methods (primary, CLASS_NST_METHODS (class), '-'); |
| objc_merge_methods (primary, CLASS_CLS_METHODS (class), '+'); |
| } |
| } |
| /* APPLE LOCAL end radar 4965989 */ |
| } |
| /* APPLE LOCAL end objc new property */ |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| else |
| { |
| tree x; |
| /* APPLE LOCAL begin radar 4564386 */ |
| if (TREE_CODE (class) == CLASS_INTERFACE_TYPE) |
| objc_merge_proto_properties_in_class (class, CLASS_PROTOCOL_LIST (class)); |
| /* APPLE LOCAL end radar 4564386 */ |
| /* Process properties of the class. */ |
| for (x = CLASS_PROPERTY_DECL (class); x; x = TREE_CHAIN (x)) |
| { |
| tree type = TREE_TYPE (x); |
| tree prop_name = PROPERTY_NAME (x); |
| /* Build an instance method declaration: - (type) prop_name; */ |
| if (PROPERTY_GETTER_NAME (x) == NULL_TREE) |
| { |
| /* No getter attribute specified. Generate an instacne method for the |
| getter. */ |
| tree rettype = build_tree_list (NULL_TREE, type); |
| tree getter_decl = build_method_decl (INSTANCE_METHOD_DECL, |
| rettype, prop_name, NULL_TREE); |
| /* APPLE LOCAL begin radar 4656712 */ |
| tree mth; |
| if (PROPERTY_IVAR_NAME (x) |
| && (mth = lookup_method (CLASS_NST_METHODS (class), prop_name))) |
| { |
| /* user declared accessor is encounterred. This is error. */ |
| error ("user accessor %<%c%s%> not allowed for property %qs", |
| '-', IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)), |
| IDENTIFIER_POINTER (prop_name)); |
| } |
| else |
| objc_add_method (class, getter_decl, false, false); |
| /* APPLE LOCAL end radar 4656712 */ |
| /* APPLE LOCAL C* property metadata (Radar 4498373) */ |
| METHOD_PROPERTY_CONTEXT (getter_decl) = x; |
| } |
| else |
| warning ("getter = %qs may not be specified in an interface", |
| IDENTIFIER_POINTER (PROPERTY_GETTER_NAME (x))); |
| |
| /* Build an instance method declaration: - (void) setName: (type)value; */ |
| if (PROPERTY_SETTER_NAME (x) == NULL_TREE |
| && PROPERTY_READONLY (x) == boolean_false_node) |
| /* APPLE LOCAL radar 4660579 */ |
| objc_add_property_setter_method (class, x); |
| else if (PROPERTY_SETTER_NAME (x)) |
| warning ("setter = %qs may not be specified in an interface", |
| IDENTIFIER_POINTER (PROPERTY_SETTER_NAME (x))); |
| /* APPLE LOCAL begin Radar 4591909 */ |
| if (PROPERTY_BYREF (x) == boolean_true_node |
| && !objc_type_valid_for_messaging (type)) |
| error ("property %qs with 'byref' attribute must be of object type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| |
| if (PROPERTY_BYCOPY (x) == boolean_true_node |
| && !objc_type_valid_for_messaging (type)) |
| error ("property %qs with 'bycopy' attribute must be of object type", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| |
| if (PROPERTY_BYREF (x) == PROPERTY_BYCOPY (x) |
| && PROPERTY_BYREF (x) == boolean_true_node) |
| { |
| error ("'byref' and 'bycopy' attributes both cannot be present in %qs", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| PROPERTY_BYREF (x) = boolean_false_node; /* recover */ |
| } |
| /* APPLE LOCAL begin radar 4621020 */ |
| if (PROPERTY_WEAK (x) == boolean_true_node |
| && (PROPERTY_BYREF (x) == boolean_true_node |
| || PROPERTY_BYCOPY (x) == boolean_true_node)) |
| { |
| error ("'weak' and 'bycopy' or 'byref' attributes both cannot be present in %qs", |
| IDENTIFIER_POINTER (PROPERTY_NAME (x))); |
| } |
| /* APPLE LOCAL end radar 4621020 */ |
| if (TREE_CODE (class) != PROTOCOL_INTERFACE_TYPE |
| && PROPERTY_IVAR_NAME (x)) |
| { |
| /* APPLE LOCAL radar 4621020 */ |
| tree iv; |
| /* APPLE LOCAL begin radar 4625843 */ |
| if (TREE_CODE (class) == CATEGORY_INTERFACE_TYPE) |
| { |
| /* Look inside category's class for an existin ivar. */ |
| class = lookup_interface (CLASS_NAME (class)); |
| gcc_assert (class); |
| } |
| /* APPLE LOCAL end radar 4625843 */ |
| if (PROPERTY_IVAR_NAME (x) == boolean_true_node) |
| { |
| /* APPLE LOCAL radar 4625843 */ |
| gcc_assert (TREE_CODE (class) == CLASS_INTERFACE_TYPE); |
| /* Insert a built-in ivar in this interface. */ |
| /* APPLE LOCAL objc new property */ |
| objc_add_internal_ivar (class, x, NULL); |
| } |
| /* APPLE LOCAL begin radar 4621020, 4653319 */ |
| else if (!(iv = nested_ivar_lookup (class, PROPERTY_IVAR_NAME (x)))) |
| { |
| error ("ivar %qs in property declaration must be an existing ivar", |
| IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (x))); |
| PROPERTY_IVAR_NAME (x) = NULL_TREE; /* recover */ |
| } |
| else if (flag_objc_gc && PROPERTY_WEAK (x) == boolean_true_node |
| && objc_is_gcable_type (TREE_TYPE (iv)) != -1) |
| error ("existing ivar %qs for a 'weak' property must be __weak", |
| IDENTIFIER_POINTER (PROPERTY_IVAR_NAME (x))); |
| /* APPLE LOCAL end radar 4621020, 4653319 */ |
| } |
| /* APPLE LOCAL end Radar 4591909 */ |
| } |
| } |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| } |
| |
| static tree |
| add_protocol (tree protocol) |
| { |
| /* Put protocol on list in reverse order. */ |
| TREE_CHAIN (protocol) = protocol_chain; |
| protocol_chain = protocol; |
| return protocol_chain; |
| } |
| |
| static tree |
| lookup_protocol (tree ident) |
| { |
| tree chain; |
| |
| for (chain = protocol_chain; chain; chain = TREE_CHAIN (chain)) |
| if (ident == PROTOCOL_NAME (chain)) |
| return chain; |
| |
| return NULL_TREE; |
| } |
| |
| /* This function forward declares the protocols named by NAMES. If |
| they are already declared or defined, the function has no effect. */ |
| |
| void |
| objc_declare_protocols (tree names) |
| { |
| tree list; |
| |
| #ifdef OBJCPLUS |
| if (current_namespace != global_namespace) { |
| error ("Objective-C declarations may only appear in global scope"); |
| } |
| #endif /* OBJCPLUS */ |
| |
| for (list = names; list; list = TREE_CHAIN (list)) |
| { |
| tree name = TREE_VALUE (list); |
| |
| if (lookup_protocol (name) == NULL_TREE) |
| { |
| tree protocol = make_node (PROTOCOL_INTERFACE_TYPE); |
| |
| TYPE_LANG_SLOT_1 (protocol) |
| = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS); |
| PROTOCOL_NAME (protocol) = name; |
| PROTOCOL_LIST (protocol) = NULL_TREE; |
| add_protocol (protocol); |
| PROTOCOL_DEFINED (protocol) = 0; |
| PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE; |
| /* APPLE LOCAL ObjC abi v2 */ |
| PROTOCOL_V2_FORWARD_DECL (protocol) = NULL_TREE; |
| } |
| } |
| } |
| |
| static tree |
| start_protocol (enum tree_code code, tree name, tree list) |
| { |
| tree protocol; |
| |
| #ifdef OBJCPLUS |
| if (current_namespace != global_namespace) { |
| error ("Objective-C declarations may only appear in global scope"); |
| } |
| #endif /* OBJCPLUS */ |
| |
| protocol = lookup_protocol (name); |
| |
| if (!protocol) |
| { |
| protocol = make_node (code); |
| TYPE_LANG_SLOT_1 (protocol) = make_tree_vec (PROTOCOL_LANG_SLOT_ELTS); |
| |
| PROTOCOL_NAME (protocol) = name; |
| /* APPLE LOCAL radar 4398221 */ |
| PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, false); |
| add_protocol (protocol); |
| PROTOCOL_DEFINED (protocol) = 1; |
| PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE; |
| /* APPLE LOCAL ObjC abi v2 */ |
| PROTOCOL_V2_FORWARD_DECL (protocol) = NULL_TREE; |
| |
| check_protocol_recursively (protocol, list); |
| } |
| else if (! PROTOCOL_DEFINED (protocol)) |
| { |
| PROTOCOL_DEFINED (protocol) = 1; |
| /* APPLE LOCAL radar 4398221 */ |
| PROTOCOL_LIST (protocol) = lookup_and_install_protocols (list, false); |
| |
| check_protocol_recursively (protocol, list); |
| } |
| else |
| { |
| warning ("duplicate declaration for protocol %qs", |
| IDENTIFIER_POINTER (name)); |
| } |
| return protocol; |
| } |
| |
| |
| /* "Encode" a data type into a string, which grows in util_obstack. |
| ??? What is the FORMAT? Someone please document this! */ |
| |
| static void |
| encode_type_qualifiers (tree declspecs) |
| { |
| tree spec; |
| |
| for (spec = declspecs; spec; spec = TREE_CHAIN (spec)) |
| { |
| if (ridpointers[(int) RID_IN] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'n'); |
| else if (ridpointers[(int) RID_INOUT] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'N'); |
| else if (ridpointers[(int) RID_OUT] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'o'); |
| else if (ridpointers[(int) RID_BYCOPY] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'O'); |
| else if (ridpointers[(int) RID_BYREF] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'R'); |
| else if (ridpointers[(int) RID_ONEWAY] == TREE_VALUE (spec)) |
| obstack_1grow (&util_obstack, 'V'); |
| } |
| } |
| |
| /* APPLE LOCAL begin 4136935 */ |
| /* Determine if a pointee is marked read-only. */ |
| |
| static bool |
| pointee_is_readonly (tree pointee) |
| { |
| while (POINTER_TYPE_P (pointee)) |
| pointee = TREE_TYPE (pointee); |
| |
| return TYPE_READONLY (pointee); |
| } |
| |
| /* APPLE LOCAL end 4136935 */ |
| /* APPLE LOCAL begin radar 4577849 */ |
| static void encode_protocol_list (tree record, bool quote) |
| { |
| tree p; |
| bool firsttime = true; |
| bool close_quote = false; |
| for (p = TYPE_OBJC_PROTOCOL_LIST (record); p; p = TREE_CHAIN (p)) |
| { |
| tree proto = TREE_VALUE (p); |
| if (TREE_CODE (proto) == PROTOCOL_INTERFACE_TYPE |
| && PROTOCOL_NAME (proto)) |
| { |
| const char *name = IDENTIFIER_POINTER (PROTOCOL_NAME (proto)); |
| if (quote && firsttime) |
| { |
| obstack_1grow (&util_obstack, '"'); |
| firsttime = false; |
| close_quote = true; |
| } |
| obstack_1grow (&util_obstack, '<'); |
| obstack_grow (&util_obstack, name, strlen (name)); |
| obstack_1grow (&util_obstack, '>'); |
| } |
| } |
| if (quote && close_quote) |
| obstack_1grow (&util_obstack, '"'); |
| } |
| /* APPLE LOCAL end radar 4577849 */ |
| |
| /* Encode a pointer type. */ |
| |
| static void |
| encode_pointer (tree type, int curtype, int format) |
| { |
| tree pointer_to = TREE_TYPE (type); |
| |
| /* APPLE LOCAL begin 4136935 */ |
| /* For historical/compatibility reasons, the read-only qualifier of the |
| pointee gets emitted _before_ the '^'. The read-only qualifier of |
| the pointer itself gets ignored, _unless_ we are looking at a typedef! |
| Also, do not emit the 'r' for anything but the outermost type! */ |
| if (!generating_instance_variables |
| && (obstack_object_size (&util_obstack) - curtype <= 1) |
| && (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
| ? TYPE_READONLY (type) |
| : pointee_is_readonly (pointer_to))) |
| obstack_1grow (&util_obstack, 'r'); |
| |
| /* APPLE LOCAL end 4136935 */ |
| if (TREE_CODE (pointer_to) == RECORD_TYPE) |
| { |
| /* APPLE LOCAL begin radar 5002848 */ |
| if (generating_property_type_encoding && |
| TYPE_NAME (pointer_to) |
| && TREE_CODE (TYPE_NAME (pointer_to)) == TYPE_DECL |
| && DECL_ORIGINAL_TYPE (TYPE_NAME (pointer_to))) |
| pointer_to = DECL_ORIGINAL_TYPE (TYPE_NAME (pointer_to)); |
| /* APPLE LOCAL end radar 5002848 */ |
| |
| if (OBJC_TYPE_NAME (pointer_to) |
| && TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE) |
| { |
| const char *name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (pointer_to)); |
| |
| if (strcmp (name, TAG_OBJECT) == 0) /* '@' */ |
| { |
| obstack_1grow (&util_obstack, '@'); |
| /* APPLE LOCAL begin radar 4577849 */ |
| if (generating_instance_variables |
| && TYPE_HAS_OBJC_INFO (pointer_to)) |
| encode_protocol_list (pointer_to, true); |
| /* APPLE LOCAL end radar 4577849 */ |
| return; |
| } |
| else if (TYPE_HAS_OBJC_INFO (pointer_to) |
| && TYPE_OBJC_INTERFACE (pointer_to)) |
| { |
| if (generating_instance_variables) |
| { |
| obstack_1grow (&util_obstack, '@'); |
| obstack_1grow (&util_obstack, '"'); |
| obstack_grow (&util_obstack, name, strlen (name)); |
| /* APPLE LOCAL radar 4577849 */ |
| encode_protocol_list (pointer_to, false); |
| obstack_1grow (&util_obstack, '"'); |
| return; |
| } |
| else |
| { |
| obstack_1grow (&util_obstack, '@'); |
| return; |
| } |
| } |
| else if (strcmp (name, TAG_CLASS) == 0) /* '#' */ |
| { |
| obstack_1grow (&util_obstack, '#'); |
| return; |
| } |
| else if (strcmp (name, TAG_SELECTOR) == 0) /* ':' */ |
| { |
| obstack_1grow (&util_obstack, ':'); |
| return; |
| } |
| } |
| } |
| else if (TREE_CODE (pointer_to) == INTEGER_TYPE |
| && TYPE_MODE (pointer_to) == QImode) |
| { |
| tree pname = TREE_CODE (OBJC_TYPE_NAME (pointer_to)) == IDENTIFIER_NODE |
| ? OBJC_TYPE_NAME (pointer_to) |
| : DECL_NAME (OBJC_TYPE_NAME (pointer_to)); |
| |
| if (!flag_next_runtime || strcmp (IDENTIFIER_POINTER (pname), "BOOL")) |
| { |
| /* APPLE LOCAL 4136935 */ |
| /* The "r" is now generated above. */ |
| |
| obstack_1grow (&util_obstack, '*'); |
| return; |
| } |
| } |
| |
| /* We have a type that does not get special treatment. */ |
| |
| /* NeXT extension */ |
| obstack_1grow (&util_obstack, '^'); |
| encode_type (pointer_to, curtype, format); |
| } |
| |
| static void |
| encode_array (tree type, int curtype, int format) |
| { |
| tree an_int_cst = TYPE_SIZE (type); |
| tree array_of = TREE_TYPE (type); |
| char buffer[40]; |
| |
| /* An incomplete array is treated like a pointer. */ |
| if (an_int_cst == NULL) |
| { |
| encode_pointer (type, curtype, format); |
| return; |
| } |
| |
| sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, |
| (TREE_INT_CST_LOW (an_int_cst) |
| / TREE_INT_CST_LOW (TYPE_SIZE (array_of)))); |
| |
| obstack_grow (&util_obstack, buffer, strlen (buffer)); |
| encode_type (array_of, curtype, format); |
| obstack_1grow (&util_obstack, ']'); |
| return; |
| } |
| |
| static void |
| /* APPLE LOCAL begin mainline */ |
| encode_aggregate_fields (tree type, int pointed_to, int curtype, int format) |
| { |
| tree field = TYPE_FIELDS (type); |
| |
| for (; field; field = TREE_CHAIN (field)) |
| { |
| #ifdef OBJCPLUS |
| /* C++ static members, and things that are not field at all, |
| should not appear in the encoding. */ |
| if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field)) |
| continue; |
| #endif |
| |
| /* Recursively encode fields of embedded base classes. */ |
| if (DECL_ARTIFICIAL (field) && !DECL_NAME (field) |
| && TREE_CODE (TREE_TYPE (field)) == RECORD_TYPE) |
| { |
| encode_aggregate_fields (TREE_TYPE (field), |
| pointed_to, curtype, format); |
| continue; |
| } |
| |
| if (generating_instance_variables && !pointed_to) |
| { |
| tree fname = DECL_NAME (field); |
| |
| obstack_1grow (&util_obstack, '"'); |
| |
| if (fname && TREE_CODE (fname) == IDENTIFIER_NODE) |
| obstack_grow (&util_obstack, |
| IDENTIFIER_POINTER (fname), |
| strlen (IDENTIFIER_POINTER (fname))); |
| |
| obstack_1grow (&util_obstack, '"'); |
| } |
| |
| encode_field_decl (field, curtype, format); |
| } |
| } |
| |
| static void |
| /* APPLE LOCAL end mainline */ |
| encode_aggregate_within (tree type, int curtype, int format, int left, |
| int right) |
| { |
| tree name; |
| /* NB: aggregates that are pointed to have slightly different encoding |
| rules in that you never encode the names of instance variables. */ |
| /* APPLE LOCAL begin 4136935 */ |
| int ob_size = obstack_object_size (&util_obstack); |
| int pointed_to = (ob_size > 0 |
| ? *(obstack_next_free (&util_obstack) - 1) == '^' |
| : 0); |
| int inline_contents |
| = ((format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables) |
| && (!pointed_to |
| || ob_size - curtype == 1 |
| || (ob_size - curtype == 2 |
| && *(obstack_next_free (&util_obstack) - 2) == 'r'))); |
| /* APPLE LOCAL end 4136935 */ |
| |
| /* Traverse struct aliases; it is important to get the |
| original struct and its tag name (if any). */ |
| type = TYPE_MAIN_VARIANT (type); |
| name = OBJC_TYPE_NAME (type); |
| /* Open parenth/bracket. */ |
| obstack_1grow (&util_obstack, left); |
| |
| /* Encode the struct/union tag name, or '?' if a tag was |
| not provided. Typedef aliases do not qualify. */ |
| if (name && TREE_CODE (name) == IDENTIFIER_NODE |
| #ifdef OBJCPLUS |
| /* Did this struct have a tag? */ |
| && !TYPE_WAS_ANONYMOUS (type) |
| #endif |
| ) |
| obstack_grow (&util_obstack, |
| IDENTIFIER_POINTER (name), |
| strlen (IDENTIFIER_POINTER (name))); |
| else |
| obstack_1grow (&util_obstack, '?'); |
| |
| /* Encode the types (and possibly names) of the inner fields, |
| if required. */ |
| if (inline_contents) |
| { |
| /* APPLE LOCAL mainline */ |
| /* Variable 'fields' removed. */ |
| obstack_1grow (&util_obstack, '='); |
| /* APPLE LOCAL mainline */ |
| encode_aggregate_fields (type, pointed_to, curtype, format); |
| } |
| /* Close parenth/bracket. */ |
| obstack_1grow (&util_obstack, right); |
| } |
| |
| static void |
| encode_aggregate (tree type, int curtype, int format) |
| { |
| enum tree_code code = TREE_CODE (type); |
| |
| switch (code) |
| { |
| case RECORD_TYPE: |
| { |
| encode_aggregate_within (type, curtype, format, '{', '}'); |
| break; |
| } |
| case UNION_TYPE: |
| { |
| encode_aggregate_within (type, curtype, format, '(', ')'); |
| break; |
| } |
| |
| case ENUMERAL_TYPE: |
| obstack_1grow (&util_obstack, 'i'); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| /* Encode a bitfield NeXT-style (i.e., without a bit offset or the underlying |
| field type. */ |
| |
| static void |
| encode_next_bitfield (int width) |
| { |
| char buffer[40]; |
| sprintf (buffer, "b%d", width); |
| obstack_grow (&util_obstack, buffer, strlen (buffer)); |
| } |
| |
| /* FORMAT will be OBJC_ENCODE_INLINE_DEFS or OBJC_ENCODE_DONT_INLINE_DEFS. */ |
| static void |
| encode_type (tree type, int curtype, int format) |
| { |
| enum tree_code code = TREE_CODE (type); |
| char c; |
| /* APPLE LOCAL begin 4136935 */ |
| tree int_type; |
| |
| /* Ignore type qualifiers when encoding a type; see encode_pointer() |
| for an exception to this rule. */ |
| /* APPLE LOCAL end 4136935 */ |
| if (code == INTEGER_TYPE) |
| { |
| switch (GET_MODE_BITSIZE (TYPE_MODE (type))) |
| { |
| case 8: c = TYPE_UNSIGNED (type) ? 'C' : 'c'; break; |
| case 16: c = TYPE_UNSIGNED (type) ? 'S' : 's'; break; |
| /* APPLE LOCAL begin 4136935 */ |
| case 32: |
| /* Another legacy kludge: 32-bit longs are encoded as 'l' or 'L', |
| but not always. For typedefs, we need to use 'i' or 'I' instead |
| if encoding a struct field, or a pointer! */ |
| int_type = ((!generating_instance_variables |
| && (obstack_object_size (&util_obstack) |
| == (unsigned) curtype)) |
| ? TYPE_MAIN_VARIANT (type) |
| : type); |
| |
| if (int_type == long_unsigned_type_node |
| || int_type == long_integer_type_node) |
| /* APPLE LOCAL end 4136935 */ |
| c = TYPE_UNSIGNED (type) ? 'L' : 'l'; |
| else |
| c = TYPE_UNSIGNED (type) ? 'I' : 'i'; |
| break; |
| case 64: c = TYPE_UNSIGNED (type) ? 'Q' : 'q'; break; |
| default: abort (); |
| } |
| obstack_1grow (&util_obstack, c); |
| } |
| |
| else if (code == REAL_TYPE) |
| { |
| /* Floating point types. */ |
| switch (GET_MODE_BITSIZE (TYPE_MODE (type))) |
| { |
| case 32: c = 'f'; break; |
| case 64: |
| case 96: |
| case 128: c = 'd'; break; |
| default: abort (); |
| } |
| obstack_1grow (&util_obstack, c); |
| } |
| |
| else if (code == VOID_TYPE) |
| obstack_1grow (&util_obstack, 'v'); |
| |
| else if (code == BOOLEAN_TYPE) |
| obstack_1grow (&util_obstack, 'B'); |
| |
| else if (code == ARRAY_TYPE) |
| encode_array (type, curtype, format); |
| |
| else if (code == POINTER_TYPE) |
| encode_pointer (type, curtype, format); |
| /* APPLE LOCAL begin radar 4476365 */ |
| #ifdef OBJCPLUS |
| else if (code == REFERENCE_TYPE) |
| encode_pointer (type, curtype, format); |
| #endif |
| /* APPLE LOCAL end radar 4476365 */ |
| |
| else if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE) |
| encode_aggregate (type, curtype, format); |
| |
| else if (code == FUNCTION_TYPE) /* '?' */ |
| obstack_1grow (&util_obstack, '?'); |
| /* APPLE LOCAL begin 4136935 */ |
| |
| /* Super-kludge. Some ObjC qualifier and type combinations need to be |
| rearranged for compatibility with gcc-3.3. */ |
| if (code == POINTER_TYPE && obstack_object_size (&util_obstack) >= 3) |
| { |
| char *enc = obstack_base (&util_obstack) + curtype; |
| |
| /* Rewrite "in const" from "nr" to "rn". */ |
| if (curtype >= 1 && !strncmp (enc - 1, "nr", 2)) |
| strncpy (enc - 1, "rn", 2); |
| /* APPLE LOCAL begin radar 4301047 */ |
| /* code removed */ |
| /* APPLE LOCAL end radar 4301047 */ |
| } |
| /* APPLE LOCAL end 4136935 */ |
| } |
| |
| static void |
| encode_gnu_bitfield (int position, tree type, int size) |
| { |
| enum tree_code code = TREE_CODE (type); |
| char buffer[40]; |
| char charType = '?'; |
| |
| if (code == INTEGER_TYPE) |
| { |
| if (integer_zerop (TYPE_MIN_VALUE (type))) |
| { |
| /* Unsigned integer types. */ |
| |
| if (TYPE_MODE (type) == QImode) |
| charType = 'C'; |
| else if (TYPE_MODE (type) == HImode) |
| charType = 'S'; |
| else if (TYPE_MODE (type) == SImode) |
| { |
| if (type == long_unsigned_type_node) |
| charType = 'L'; |
| else |
| charType = 'I'; |
| } |
| else if (TYPE_MODE (type) == DImode) |
| charType = 'Q'; |
| } |
| |
| else |
| /* Signed integer types. */ |
| { |
| if (TYPE_MODE (type) == QImode) |
| charType = 'c'; |
| else if (TYPE_MODE (type) == HImode) |
| charType = 's'; |
| else if (TYPE_MODE (type) == SImode) |
| { |
| if (type == long_integer_type_node) |
| charType = 'l'; |
| else |
| charType = 'i'; |
| } |
| |
| else if (TYPE_MODE (type) == DImode) |
| charType = 'q'; |
| } |
| } |
| else if (code == ENUMERAL_TYPE) |
| charType = 'i'; |
| else |
| abort (); |
| |
| sprintf (buffer, "b%d%c%d", position, charType, size); |
| obstack_grow (&util_obstack, buffer, strlen (buffer)); |
| } |
| |
| static void |
| encode_field_decl (tree field_decl, int curtype, int format) |
| { |
| tree type; |
| |
| #ifdef OBJCPLUS |
| /* C++ static members, and things that are not fields at all, |
| should not appear in the encoding. */ |
| if (TREE_CODE (field_decl) != FIELD_DECL || TREE_STATIC (field_decl)) |
| return; |
| #endif |
| |
| type = TREE_TYPE (field_decl); |
| |
| /* Generate the bitfield typing information, if needed. Note the difference |
| between GNU and NeXT runtimes. */ |
| if (DECL_BIT_FIELD_TYPE (field_decl)) |
| { |
| int size = tree_low_cst (DECL_SIZE (field_decl), 1); |
| |
| if (flag_next_runtime) |
| encode_next_bitfield (size); |
| else |
| encode_gnu_bitfield (int_bit_position (field_decl), |
| DECL_BIT_FIELD_TYPE (field_decl), size); |
| } |
| else |
| encode_type (TREE_TYPE (field_decl), curtype, format); |
| } |
| |
| /* APPLE LOCAL begin 4209854 */ |
| /* Decay array and function parameters into pointers. */ |
| |
| static tree |
| objc_decay_parm_type (tree type) |
| { |
| if (TREE_CODE (type) == ARRAY_TYPE || TREE_CODE (type) == FUNCTION_TYPE) |
| type = build_pointer_type (TREE_CODE (type) == ARRAY_TYPE |
| ? TREE_TYPE (type) |
| : type); |
| |
| return type; |
| } |
| |
| /* APPLE LOCAL end 4209854 */ |
| static GTY(()) tree objc_parmlist = NULL_TREE; |
| |
| /* Append PARM to a list of formal parameters of a method, making a necessary |
| array-to-pointer adjustment along the way. */ |
| |
| static void |
| objc_push_parm (tree parm) |
| { |
| /* APPLE LOCAL begin 4209854 */ |
| /* Decay arrays and functions into pointers. */ |
| tree type = objc_decay_parm_type (TREE_TYPE (parm)); |
| |
| /* If the parameter type has been decayed, a new PARM_DECL needs to be |
| built as well. */ |
| if (type != TREE_TYPE (parm)) |
| parm = build_decl (PARM_DECL, DECL_NAME (parm), type); |
| /* APPLE LOCAL end 4209854 */ |
| |
| DECL_ARG_TYPE_AS_WRITTEN (parm) = TREE_TYPE (parm); |
| DECL_ARG_TYPE (parm) |
| = lang_hooks.types.type_promotes_to (TREE_TYPE (parm)); |
| |
| /* Record constancy and volatility. */ |
| c_apply_type_quals_to_decl |
| ((TYPE_READONLY (TREE_TYPE (parm)) ? TYPE_QUAL_CONST : 0) |
| | (TYPE_RESTRICT (TREE_TYPE (parm)) ? TYPE_QUAL_RESTRICT : 0) |
| | (TYPE_VOLATILE (TREE_TYPE (parm)) ? TYPE_QUAL_VOLATILE : 0), parm); |
| |
| objc_parmlist = chainon (objc_parmlist, parm); |
| } |
| |
| /* Retrieve the formal parameter list constructed via preceding calls to |
| objc_push_parm(). */ |
| |
| #ifdef OBJCPLUS |
| static tree |
| objc_get_parm_info (int have_ellipsis ATTRIBUTE_UNUSED) |
| #else |
| static struct c_arg_info * |
| objc_get_parm_info (int have_ellipsis) |
| #endif |
| { |
| #ifdef OBJCPLUS |
| tree parm_info = objc_parmlist; |
| objc_parmlist = NULL_TREE; |
| |
| return parm_info; |
| #else |
| tree parm_info = objc_parmlist; |
| struct c_arg_info *arg_info; |
| /* The C front-end requires an elaborate song and dance at |
| this point. */ |
| push_scope (); |
| declare_parm_level (); |
| while (parm_info) |
| { |
| tree next = TREE_CHAIN (parm_info); |
| |
| TREE_CHAIN (parm_info) = NULL_TREE; |
| parm_info = pushdecl (parm_info); |
| finish_decl (parm_info, NULL_TREE, NULL_TREE); |
| parm_info = next; |
| } |
| arg_info = get_parm_info (have_ellipsis); |
| pop_scope (); |
| objc_parmlist = NULL_TREE; |
| return arg_info; |
| #endif |
| } |
| |
| /* Synthesize the formal parameters 'id self' and 'SEL _cmd' needed for ObjC |
| method definitions. In the case of instance methods, we can be more |
| specific as to the type of 'self'. */ |
| |
| static void |
| synth_self_and_ucmd_args (void) |
| { |
| tree self_type; |
| |
| if (objc_method_context |
| && TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL) |
| self_type = objc_instance_type; |
| else |
| /* Really a `struct objc_class *'. However, we allow people to |
| assign to self, which changes its type midstream. */ |
| self_type = objc_object_type; |
| |
| /* id self; */ |
| objc_push_parm (build_decl (PARM_DECL, self_id, self_type)); |
| |
| /* SEL _cmd; */ |
| objc_push_parm (build_decl (PARM_DECL, ucmd_id, objc_selector_type)); |
| } |
| |
| /* Transform an Objective-C method definition into a static C function |
| definition, synthesizing the first two arguments, "self" and "_cmd", |
| in the process. */ |
| |
| static void |
| start_method_def (tree method) |
| { |
| tree parmlist; |
| #ifdef OBJCPLUS |
| tree parm_info; |
| #else |
| struct c_arg_info *parm_info; |
| #endif |
| int have_ellipsis = 0; |
| |
| /* APPLE LOCAL begin mainline */ |
| /* If we are defining a "dealloc" method in a non-root class, we will need |
| to check if a [super dealloc] is missing, and warn if it is. */ |
| if(CLASS_SUPER_NAME (objc_implementation_context) |
| && !strcmp ("dealloc", IDENTIFIER_POINTER (METHOD_SEL_NAME (method)))) |
| should_call_super_dealloc = 1; |
| else |
| should_call_super_dealloc = 0; |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4757423 */ |
| /* If we are defining a "finalize" method in a non-root class, we will need |
| to check if a [super finalize] is missing, and warn if it is. */ |
| should_call_super_finalize = |
| CLASS_SUPER_NAME (objc_implementation_context) |
| && !strcmp ("finalize", IDENTIFIER_POINTER (METHOD_SEL_NAME (method))); |
| /* APPLE LOCAL end radar 4757423 */ |
| |
| /* Required to implement _msgSuper. */ |
| objc_method_context = method; |
| UOBJC_SUPER_decl = NULL_TREE; |
| |
| /* Generate prototype declarations for arguments..."new-style". */ |
| synth_self_and_ucmd_args (); |
| |
| /* Generate argument declarations if a keyword_decl. */ |
| parmlist = METHOD_SEL_ARGS (method); |
| while (parmlist) |
| { |
| tree type = TREE_VALUE (TREE_TYPE (parmlist)), parm; |
| |
| parm = build_decl (PARM_DECL, KEYWORD_ARG_NAME (parmlist), type); |
| objc_push_parm (parm); |
| parmlist = TREE_CHAIN (parmlist); |
| } |
| |
| if (METHOD_ADD_ARGS (method)) |
| { |
| tree akey; |
| |
| for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method)); |
| akey; akey = TREE_CHAIN (akey)) |
| { |
| objc_push_parm (TREE_VALUE (akey)); |
| } |
| |
| if (TREE_OVERFLOW (METHOD_ADD_ARGS (method))) |
| have_ellipsis = 1; |
| } |
| |
| parm_info = objc_get_parm_info (have_ellipsis); |
| |
| really_start_method (objc_method_context, parm_info); |
| } |
| |
| static void |
| warn_with_method (const char *message, int mtype, tree method) |
| { |
| /* Add a readable method name to the warning. */ |
| warning ("%J%s %<%c%s%>", method, |
| message, mtype, gen_method_decl (method)); |
| } |
| |
| /* Return 1 if TYPE1 is equivalent to TYPE2 |
| for purposes of method overloading. */ |
| |
| static int |
| objc_types_are_equivalent (tree type1, tree type2) |
| { |
| if (type1 == type2) |
| return 1; |
| |
| /* Strip away indirections. */ |
| while ((TREE_CODE (type1) == ARRAY_TYPE || TREE_CODE (type1) == POINTER_TYPE) |
| && (TREE_CODE (type1) == TREE_CODE (type2))) |
| type1 = TREE_TYPE (type1), type2 = TREE_TYPE (type2); |
| if (TYPE_MAIN_VARIANT (type1) != TYPE_MAIN_VARIANT (type2)) |
| return 0; |
| |
| type1 = (TYPE_HAS_OBJC_INFO (type1) |
| ? TYPE_OBJC_PROTOCOL_LIST (type1) |
| : NULL_TREE); |
| type2 = (TYPE_HAS_OBJC_INFO (type2) |
| ? TYPE_OBJC_PROTOCOL_LIST (type2) |
| : NULL_TREE); |
| |
| if (list_length (type1) == list_length (type2)) |
| { |
| for (; type2; type2 = TREE_CHAIN (type2)) |
| if (!lookup_protocol_in_reflist (type1, TREE_VALUE (type2))) |
| return 0; |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Return 1 if TYPE1 has the same size and alignment as TYPE2. */ |
| |
| static int |
| objc_types_share_size_and_alignment (tree type1, tree type2) |
| { |
| return (simple_cst_equal (TYPE_SIZE (type1), TYPE_SIZE (type2)) |
| && TYPE_ALIGN (type1) == TYPE_ALIGN (type2)); |
| } |
| |
| /* Return 1 if PROTO1 is equivalent to PROTO2 |
| for purposes of method overloading. Ordinarily, the type signatures |
| should match up exactly, unless STRICT is zero, in which case we |
| shall allow differences in which the size and alignment of a type |
| is the same. */ |
| |
| static int |
| comp_proto_with_proto (tree proto1, tree proto2, int strict) |
| { |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL C* property (Radar 4436866) */ |
| /* code removed */ |
| /* The following test is needed in case there are hashing |
| collisions. */ |
| if (METHOD_SEL_NAME (proto1) != METHOD_SEL_NAME (proto2)) |
| return 0; |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| return match_proto_with_proto (proto1, proto2, strict); |
| } |
| |
| static int |
| match_proto_with_proto (tree proto1, tree proto2, int strict) |
| { |
| tree type1, type2; |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| /* Compare return types. */ |
| type1 = TREE_VALUE (TREE_TYPE (proto1)); |
| type2 = TREE_VALUE (TREE_TYPE (proto2)); |
| |
| /* APPLE LOCAL begin mainline */ |
| if (!objc_types_are_equivalent (type1, type2) |
| && (strict || !objc_types_share_size_and_alignment (type1, type2))) |
| /* APPLE LOCAL end mainline */ |
| return 0; |
| |
| /* Compare argument types. */ |
| for (type1 = get_arg_type_list (proto1, METHOD_REF, 0), |
| type2 = get_arg_type_list (proto2, METHOD_REF, 0); |
| type1 && type2; |
| type1 = TREE_CHAIN (type1), type2 = TREE_CHAIN (type2)) |
| { |
| /* APPLE LOCAL begin mainline */ |
| if (!objc_types_are_equivalent (TREE_VALUE (type1), TREE_VALUE (type2)) |
| && (strict |
| || !objc_types_share_size_and_alignment (TREE_VALUE (type1), |
| TREE_VALUE (type2)))) |
| /* APPLE LOCAL end mainline */ |
| return 0; |
| } |
| |
| return (!type1 && !type2); |
| } |
| |
| /* Fold an OBJ_TYPE_REF expression for ObjC method dispatches, where |
| this occurs. ObjC method dispatches are _not_ like C++ virtual |
| member function dispatches, and we account for the difference here. */ |
| tree |
| #ifdef OBJCPLUS |
| objc_fold_obj_type_ref (tree ref, tree known_type) |
| #else |
| objc_fold_obj_type_ref (tree ref ATTRIBUTE_UNUSED, |
| tree known_type ATTRIBUTE_UNUSED) |
| #endif |
| { |
| #ifdef OBJCPLUS |
| tree v = BINFO_VIRTUALS (TYPE_BINFO (known_type)); |
| |
| /* If the receiver does not have virtual member functions, there |
| is nothing we can (or need to) do here. */ |
| if (!v) |
| return NULL_TREE; |
| |
| /* Let C++ handle C++ virtual functions. */ |
| return cp_fold_obj_type_ref (ref, known_type); |
| #else |
| /* For plain ObjC, we currently do not need to do anything. */ |
| return NULL_TREE; |
| #endif |
| } |
| |
| static void |
| objc_start_function (tree name, tree type, tree attrs, |
| #ifdef OBJCPLUS |
| tree params |
| #else |
| struct c_arg_info *params |
| #endif |
| ) |
| { |
| tree fndecl = build_decl (FUNCTION_DECL, name, type); |
| |
| #ifdef OBJCPLUS |
| DECL_ARGUMENTS (fndecl) = params; |
| DECL_INITIAL (fndecl) = error_mark_node; |
| DECL_EXTERNAL (fndecl) = 0; |
| TREE_STATIC (fndecl) = 1; |
| retrofit_lang_decl (fndecl); |
| cplus_decl_attributes (&fndecl, attrs, 0); |
| /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ |
| /* Build a mapping between this decl and the per-function options in |
| effect at this point. */ |
| record_func_cl_pf_opts_mapping (fndecl); |
| /* APPLE LOCAL end optimization pragmas 3124235/3420242 */ |
| start_preparsed_function (fndecl, attrs, /*flags=*/SF_DEFAULT); |
| #else |
| struct c_label_context_se *nstack_se; |
| struct c_label_context_vm *nstack_vm; |
| nstack_se = XOBNEW (&parser_obstack, struct c_label_context_se); |
| nstack_se->labels_def = NULL; |
| nstack_se->labels_used = NULL; |
| nstack_se->next = label_context_stack_se; |
| label_context_stack_se = nstack_se; |
| nstack_vm = XOBNEW (&parser_obstack, struct c_label_context_vm); |
| nstack_vm->labels_def = NULL; |
| nstack_vm->labels_used = NULL; |
| nstack_vm->scope = 0; |
| nstack_vm->next = label_context_stack_vm; |
| label_context_stack_vm = nstack_vm; |
| /* APPLE LOCAL begin mainline */ |
| current_function_returns_value = 0; /* Assume, until we see it does. */ |
| current_function_returns_null = 0; |
| /* APPLE LOCAL end mainline */ |
| |
| decl_attributes (&fndecl, attrs, 0); |
| announce_function (fndecl); |
| DECL_INITIAL (fndecl) = error_mark_node; |
| DECL_EXTERNAL (fndecl) = 0; |
| TREE_STATIC (fndecl) = 1; |
| current_function_decl = pushdecl (fndecl); |
| /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */ |
| /* Build a mapping between this decl and the per-function options in |
| effect at this point. */ |
| record_func_cl_pf_opts_mapping (fndecl); |
| /* APPLE LOCAL end optimization pragmas 3124235/3420242 */ |
| push_scope (); |
| declare_parm_level (); |
| DECL_RESULT (current_function_decl) |
| = build_decl (RESULT_DECL, NULL_TREE, |
| TREE_TYPE (TREE_TYPE (current_function_decl))); |
| DECL_ARTIFICIAL (DECL_RESULT (current_function_decl)) = 1; |
| DECL_IGNORED_P (DECL_RESULT (current_function_decl)) = 1; |
| start_fname_decls (); |
| store_parm_decls_from (params); |
| #endif |
| |
| TREE_USED (current_function_decl) = 1; |
| } |
| |
| /* - Generate an identifier for the function. the format is "_n_cls", |
| where 1 <= n <= nMethods, and cls is the name the implementation we |
| are processing. |
| - Install the return type from the method declaration. |
| - If we have a prototype, check for type consistency. */ |
| |
| static void |
| really_start_method (tree method, |
| #ifdef OBJCPLUS |
| tree parmlist |
| #else |
| struct c_arg_info *parmlist |
| #endif |
| ) |
| { |
| tree ret_type, meth_type; |
| tree method_id; |
| const char *sel_name, *class_name, *cat_name; |
| char *buf; |
| |
| /* Synth the storage class & assemble the return type. */ |
| ret_type = TREE_VALUE (TREE_TYPE (method)); |
| |
| sel_name = IDENTIFIER_POINTER (METHOD_SEL_NAME (method)); |
| class_name = IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)); |
| cat_name = ((TREE_CODE (objc_implementation_context) |
| == CLASS_IMPLEMENTATION_TYPE) |
| ? NULL |
| : IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context))); |
| method_slot++; |
| |
| /* Make sure this is big enough for any plausible method label. */ |
| buf = (char *) alloca (50 + strlen (sel_name) + strlen (class_name) |
| + (cat_name ? strlen (cat_name) : 0)); |
| |
| OBJC_GEN_METHOD_LABEL (buf, TREE_CODE (method) == INSTANCE_METHOD_DECL, |
| class_name, cat_name, sel_name, method_slot); |
| |
| method_id = get_identifier (buf); |
| |
| #ifdef OBJCPLUS |
| /* Objective-C methods cannot be overloaded, so we don't need |
| the type encoding appended. It looks bad anyway... */ |
| push_lang_context (lang_name_c); |
| #endif |
| |
| meth_type |
| = build_function_type (ret_type, |
| get_arg_type_list (method, METHOD_DEF, 0)); |
| objc_start_function (method_id, meth_type, NULL_TREE, parmlist); |
| |
| /* Set self_decl from the first argument. */ |
| self_decl = DECL_ARGUMENTS (current_function_decl); |
| |
| /* Suppress unused warnings. */ |
| TREE_USED (self_decl) = 1; |
| TREE_USED (TREE_CHAIN (self_decl)) = 1; |
| #ifdef OBJCPLUS |
| pop_lang_context (); |
| #endif |
| |
| METHOD_DEFINITION (method) = current_function_decl; |
| |
| /* Check consistency...start_function, pushdecl, duplicate_decls. */ |
| |
| if (implementation_template != objc_implementation_context) |
| { |
| tree proto |
| = lookup_method_static (implementation_template, |
| METHOD_SEL_NAME (method), |
| /* APPLE LOCAL begin mainline */ |
| ((TREE_CODE (method) == CLASS_METHOD_DECL) |
| /* APPLE LOCAL objc new property */ |
| | OBJC_LOOKUP_NO_SUPER), false); |
| /* APPLE LOCAL end mainline */ |
| |
| if (proto) |
| { |
| /* APPLE LOCAL radar 4606233 */ |
| /* code removed */ |
| /* APPLE LOCAL mainline */ |
| if (!comp_proto_with_proto (method, proto, 1)) |
| { |
| char type = (TREE_CODE (method) == INSTANCE_METHOD_DECL ? '-' : '+'); |
| |
| warn_with_method ("conflicting types for", type, method); |
| warn_with_method ("previous declaration of", type, proto); |
| } |
| /* APPLE LOCAL begin radar 4727659 */ |
| /* Move __attribute__ ((noreturn)) to DECL_FUNCTION definition node. |
| so warning may come out */ |
| if (METHOD_DEFINITION (method)) |
| TREE_THIS_VOLATILE (METHOD_DEFINITION (method)) |
| = TREE_THIS_VOLATILE (proto); |
| /* APPLE LOCAL end radar 4727659 */ |
| } |
| else |
| { |
| /* We have a method @implementation even though we did not |
| see a corresponding @interface declaration (which is allowed |
| by Objective-C rules). Go ahead and place the method in |
| the @interface anyway, so that message dispatch lookups |
| will see it. */ |
| tree interface = implementation_template; |
| |
| if (TREE_CODE (objc_implementation_context) |
| == CATEGORY_IMPLEMENTATION_TYPE) |
| interface = lookup_category |
| (interface, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| |
| if (interface) |
| objc_add_method (interface, copy_node (method), |
| /* APPLE LOCAL C* language */ |
| TREE_CODE (method) == CLASS_METHOD_DECL, 0); |
| } |
| } |
| } |
| |
| static void *UOBJC_SUPER_scope = 0; |
| |
| /* _n_Method (id self, SEL sel, ...) |
| { |
| struct objc_super _S; |
| _msgSuper ((_S.self = self, _S.class = _cls, &_S), ...); |
| } */ |
| |
| static tree |
| get_super_receiver (void) |
| { |
| if (objc_method_context) |
| { |
| tree super_expr, super_expr_list; |
| |
| if (!UOBJC_SUPER_decl) |
| { |
| UOBJC_SUPER_decl = build_decl (VAR_DECL, get_identifier (TAG_SUPER), |
| objc_super_template); |
| /* This prevents `unused variable' warnings when compiling with -Wall. */ |
| TREE_USED (UOBJC_SUPER_decl) = 1; |
| lang_hooks.decls.pushdecl (UOBJC_SUPER_decl); |
| finish_decl (UOBJC_SUPER_decl, NULL_TREE, NULL_TREE); |
| UOBJC_SUPER_scope = objc_get_current_scope (); |
| } |
| |
| /* Set receiver to self. */ |
| /* APPLE LOCAL mainline */ |
| super_expr = objc_build_component_ref (UOBJC_SUPER_decl, self_id); |
| super_expr = build_modify_expr (super_expr, NOP_EXPR, self_decl); |
| super_expr_list = super_expr; |
| |
| /* Set class to begin searching. */ |
| /* APPLE LOCAL begin mainline */ |
| super_expr = objc_build_component_ref (UOBJC_SUPER_decl, |
| /* APPLE LOCAL ObjC abi v2 */ |
| get_identifier ("cls")); |
| /* APPLE LOCAL end mainline */ |
| |
| if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| /* For new ObjC abi, "cls" is loaded from a __class_refs table entry. */ |
| /* For super call in class method, must have super_t.cls point to its |
| metaclass. */ |
| tree class_expr; |
| /* APPLE LOCAL begin radar 4535676 */ |
| class_expr = objc_v2_get_class_super_reference ( |
| CLASS_NAME (objc_implementation_context), |
| (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL)); |
| /* APPLE LOCAL end radar 4535676 */ |
| super_expr = build_modify_expr (super_expr, NOP_EXPR, class_expr); |
| } |
| else |
| { |
| /* [_cls, __cls]Super are "pre-built" in |
| synth_forward_declarations. */ |
| |
| super_expr = build_modify_expr (super_expr, NOP_EXPR, |
| ((TREE_CODE (objc_method_context) |
| == INSTANCE_METHOD_DECL) |
| ? ucls_super_ref |
| : uucls_super_ref)); |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| } |
| |
| else |
| /* We have a category. */ |
| { |
| tree super_name = CLASS_SUPER_NAME (implementation_template); |
| tree super_class; |
| |
| /* Barf if super used in a category of Object. */ |
| if (!super_name) |
| { |
| error ("no super class declared in interface for %qs", |
| IDENTIFIER_POINTER (CLASS_NAME (implementation_template))); |
| return error_mark_node; |
| } |
| |
| if (flag_next_runtime && !flag_zero_link) |
| { |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| super_class = objc_get_class_reference ((flag_objc_abi == 2) |
| ? CLASS_NAME (implementation_template) |
| : super_name); |
| /* APPLE LOCAL end ObjC abi v2 */ |
| if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL) |
| /* If we are in a class method, we must retrieve the |
| _metaclass_ for the current class, pointed at by |
| the class's "isa" pointer. The following assumes that |
| "isa" is the first ivar in a class (which it must be). */ |
| super_class |
| = build_indirect_ref |
| (build_c_cast (build_pointer_type (objc_class_type), |
| super_class), "unary *"); |
| } |
| else |
| { |
| add_class_reference (super_name); |
| super_class = (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL |
| ? objc_get_class_decl : objc_get_meta_class_decl); |
| assemble_external (super_class); |
| super_class |
| = build_function_call |
| (super_class, |
| build_tree_list |
| (NULL_TREE, |
| my_build_string (IDENTIFIER_LENGTH (super_name) + 1, |
| IDENTIFIER_POINTER (super_name)))); |
| } |
| |
| super_expr |
| = build_modify_expr (super_expr, NOP_EXPR, |
| build_c_cast (TREE_TYPE (super_expr), |
| super_class)); |
| } |
| |
| super_expr_list = build_compound_expr (super_expr_list, super_expr); |
| |
| super_expr = build_unary_op (ADDR_EXPR, UOBJC_SUPER_decl, 0); |
| super_expr_list = build_compound_expr (super_expr_list, super_expr); |
| |
| return super_expr_list; |
| } |
| else |
| { |
| error ("[super ...] must appear in a method context"); |
| return error_mark_node; |
| } |
| } |
| |
| /* When exiting a scope, sever links to a 'super' declaration (if any) |
| therein contained. */ |
| |
| void |
| objc_clear_super_receiver (void) |
| { |
| if (objc_method_context |
| && UOBJC_SUPER_scope == objc_get_current_scope ()) { |
| UOBJC_SUPER_decl = 0; |
| UOBJC_SUPER_scope = 0; |
| } |
| } |
| |
| void |
| objc_finish_method_definition (tree fndecl) |
| { |
| /* We cannot validly inline ObjC methods, at least not without a language |
| extension to declare that a method need not be dynamically |
| dispatched, so suppress all thoughts of doing so. */ |
| DECL_INLINE (fndecl) = 0; |
| DECL_UNINLINABLE (fndecl) = 1; |
| |
| #ifndef OBJCPLUS |
| /* The C++ front-end will have called finish_function() for us. */ |
| finish_function (); |
| #endif |
| |
| METHOD_ENCODING (objc_method_context) |
| = encode_method_prototype (objc_method_context); |
| |
| /* Required to implement _msgSuper. This must be done AFTER finish_function, |
| since the optimizer may find "may be used before set" errors. */ |
| objc_method_context = NULL_TREE; |
| |
| /* APPLE LOCAL begin mainline */ |
| if (should_call_super_dealloc) |
| warning ("method possibly missing a [super dealloc] call"); |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4757423 */ |
| if (should_call_super_finalize) |
| warning ("method possibly missing a [super finalize] call"); |
| /* APPLE LOCAL end radar 4757423 */ |
| } |
| |
| #if 0 |
| int |
| lang_report_error_function (tree decl) |
| { |
| if (objc_method_context) |
| { |
| fprintf (stderr, "In method %qs\n", |
| IDENTIFIER_POINTER (METHOD_SEL_NAME (objc_method_context))); |
| return 1; |
| } |
| |
| else |
| return 0; |
| } |
| #endif |
| |
| /* Given a tree DECL node, produce a printable description of it in the given |
| buffer, overwriting the buffer. */ |
| |
| static char * |
| gen_declaration (tree decl) |
| { |
| errbuf[0] = '\0'; |
| |
| if (DECL_P (decl)) |
| { |
| gen_type_name_0 (TREE_TYPE (decl)); |
| |
| if (DECL_NAME (decl)) |
| { |
| if (!POINTER_TYPE_P (TREE_TYPE (decl))) |
| strcat (errbuf, " "); |
| |
| strcat (errbuf, IDENTIFIER_POINTER (DECL_NAME (decl))); |
| } |
| |
| if (DECL_INITIAL (decl) |
| && TREE_CODE (DECL_INITIAL (decl)) == INTEGER_CST) |
| sprintf (errbuf + strlen (errbuf), ": " HOST_WIDE_INT_PRINT_DEC, |
| TREE_INT_CST_LOW (DECL_INITIAL (decl))); |
| } |
| |
| return errbuf; |
| } |
| |
| /* Given a tree TYPE node, produce a printable description of it in the given |
| buffer, overwriting the buffer. */ |
| |
| static char * |
| gen_type_name_0 (tree type) |
| { |
| tree orig = type, proto; |
| |
| if (TYPE_P (type) && TYPE_NAME (type)) |
| type = TYPE_NAME (type); |
| else if (POINTER_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE) |
| { |
| tree inner = TREE_TYPE (type); |
| |
| while (TREE_CODE (inner) == ARRAY_TYPE) |
| inner = TREE_TYPE (inner); |
| |
| gen_type_name_0 (inner); |
| |
| if (!POINTER_TYPE_P (inner)) |
| strcat (errbuf, " "); |
| |
| if (POINTER_TYPE_P (type)) |
| strcat (errbuf, "*"); |
| else |
| while (type != inner) |
| { |
| strcat (errbuf, "["); |
| |
| if (TYPE_DOMAIN (type)) |
| { |
| char sz[20]; |
| |
| sprintf (sz, HOST_WIDE_INT_PRINT_DEC, |
| (TREE_INT_CST_LOW |
| (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1)); |
| strcat (errbuf, sz); |
| } |
| |
| strcat (errbuf, "]"); |
| type = TREE_TYPE (type); |
| } |
| |
| goto exit_function; |
| } |
| |
| if (TREE_CODE (type) == TYPE_DECL && DECL_NAME (type)) |
| type = DECL_NAME (type); |
| /* APPLE LOCAL begin radar 4156731 */ |
| strcat (errbuf, TREE_CODE (type) == IDENTIFIER_NODE |
| ? IDENTIFIER_POINTER (type) |
| : ""); |
| /* APPLE LOCAL end radar 4156731 */ |
| /* For 'id' and 'Class', adopted protocols are stored in the pointee. */ |
| if (objc_is_id (orig)) |
| orig = TREE_TYPE (orig); |
| |
| proto = TYPE_HAS_OBJC_INFO (orig) ? TYPE_OBJC_PROTOCOL_LIST (orig) : NULL_TREE; |
| |
| if (proto) |
| { |
| strcat (errbuf, " <"); |
| |
| while (proto) { |
| strcat (errbuf, |
| IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (proto)))); |
| proto = TREE_CHAIN (proto); |
| strcat (errbuf, proto ? ", " : ">"); |
| } |
| } |
| |
| exit_function: |
| return errbuf; |
| } |
| |
| static char * |
| gen_type_name (tree type) |
| { |
| errbuf[0] = '\0'; |
| |
| return gen_type_name_0 (type); |
| } |
| |
| /* Given a method tree, put a printable description into the given |
| buffer (overwriting) and return a pointer to the buffer. */ |
| |
| static char * |
| gen_method_decl (tree method) |
| { |
| tree chain; |
| |
| strcpy (errbuf, "("); /* NB: Do _not_ call strcat() here. */ |
| gen_type_name_0 (TREE_VALUE (TREE_TYPE (method))); |
| strcat (errbuf, ")"); |
| chain = METHOD_SEL_ARGS (method); |
| |
| if (chain) |
| { |
| /* We have a chain of keyword_decls. */ |
| do |
| { |
| if (KEYWORD_KEY_NAME (chain)) |
| strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_KEY_NAME (chain))); |
| |
| strcat (errbuf, ":("); |
| gen_type_name_0 (TREE_VALUE (TREE_TYPE (chain))); |
| strcat (errbuf, ")"); |
| |
| strcat (errbuf, IDENTIFIER_POINTER (KEYWORD_ARG_NAME (chain))); |
| if ((chain = TREE_CHAIN (chain))) |
| strcat (errbuf, " "); |
| } |
| while (chain); |
| |
| if (METHOD_ADD_ARGS (method)) |
| { |
| chain = TREE_CHAIN (METHOD_ADD_ARGS (method)); |
| |
| /* Know we have a chain of parm_decls. */ |
| while (chain) |
| { |
| strcat (errbuf, ", "); |
| gen_type_name_0 (TREE_TYPE (TREE_VALUE (chain))); |
| chain = TREE_CHAIN (chain); |
| } |
| |
| if (TREE_OVERFLOW (METHOD_ADD_ARGS (method))) |
| strcat (errbuf, ", ..."); |
| } |
| } |
| |
| else |
| /* We have a unary selector. */ |
| strcat (errbuf, IDENTIFIER_POINTER (METHOD_SEL_NAME (method))); |
| |
| return errbuf; |
| } |
| |
| /* Debug info. */ |
| |
| |
| /* Dump an @interface declaration of the supplied class CHAIN to the |
| supplied file FP. Used to implement the -gen-decls option (which |
| prints out an @interface declaration of all classes compiled in |
| this run); potentially useful for debugging the compiler too. */ |
| static void |
| dump_interface (FILE *fp, tree chain) |
| { |
| /* FIXME: A heap overflow here whenever a method (or ivar) |
| declaration is so long that it doesn't fit in the buffer. The |
| code and all the related functions should be rewritten to avoid |
| using fixed size buffers. */ |
| const char *my_name = IDENTIFIER_POINTER (CLASS_NAME (chain)); |
| tree ivar_decls = CLASS_RAW_IVARS (chain); |
| tree nst_methods = CLASS_NST_METHODS (chain); |
| tree cls_methods = CLASS_CLS_METHODS (chain); |
| |
| fprintf (fp, "\n@interface %s", my_name); |
| |
| /* CLASS_SUPER_NAME is used to store the superclass name for |
| classes, and the category name for categories. */ |
| if (CLASS_SUPER_NAME (chain)) |
| { |
| const char *name = IDENTIFIER_POINTER (CLASS_SUPER_NAME (chain)); |
| |
| if (TREE_CODE (chain) == CATEGORY_IMPLEMENTATION_TYPE |
| || TREE_CODE (chain) == CATEGORY_INTERFACE_TYPE) |
| { |
| fprintf (fp, " (%s)\n", name); |
| } |
| else |
| { |
| fprintf (fp, " : %s\n", name); |
| } |
| } |
| else |
| fprintf (fp, "\n"); |
| |
| /* FIXME - the following doesn't seem to work at the moment. */ |
| if (ivar_decls) |
| { |
| fprintf (fp, "{\n"); |
| do |
| { |
| fprintf (fp, "\t%s;\n", gen_declaration (ivar_decls)); |
| ivar_decls = TREE_CHAIN (ivar_decls); |
| } |
| while (ivar_decls); |
| fprintf (fp, "}\n"); |
| } |
| |
| while (nst_methods) |
| { |
| fprintf (fp, "- %s;\n", gen_method_decl (nst_methods)); |
| nst_methods = TREE_CHAIN (nst_methods); |
| } |
| |
| while (cls_methods) |
| { |
| fprintf (fp, "+ %s;\n", gen_method_decl (cls_methods)); |
| cls_methods = TREE_CHAIN (cls_methods); |
| } |
| |
| fprintf (fp, "@end\n"); |
| } |
| |
| /* Demangle function for Objective-C */ |
| static const char * |
| /* APPLE LOCAL radar 4638467,4734562 */ |
| objc_demangle (tree decl, int vrb) |
| { |
| char *demangled, *cp; |
| /* APPLE LOCAL radar 4638467 */ |
| const char *mangled = IDENTIFIER_POINTER (DECL_NAME (decl)); |
| |
| if (mangled[0] == '_' && |
| (mangled[1] == 'i' || mangled[1] == 'c') && |
| mangled[2] == '_') |
| { |
| cp = demangled = xmalloc(strlen(mangled) + 2); |
| if (mangled[1] == 'i') |
| *cp++ = '-'; /* for instance method */ |
| else |
| *cp++ = '+'; /* for class method */ |
| *cp++ = '['; /* opening left brace */ |
| strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ |
| while (*cp && *cp == '_') |
| cp++; /* skip any initial underbars in class name */ |
| cp = strchr(cp, '_'); /* find first non-initial underbar */ |
| if (cp == NULL) |
| { |
| free(demangled); /* not mangled name */ |
| return mangled; |
| } |
| if (cp[1] == '_') /* easy case: no category name */ |
| { |
| *cp++ = ' '; /* replace two '_' with one ' ' */ |
| strcpy(cp, mangled + (cp - demangled) + 2); |
| } |
| else |
| { |
| *cp++ = '('; /* less easy case: category name */ |
| cp = strchr(cp, '_'); |
| if (cp == 0) |
| { |
| free(demangled); /* not mangled name */ |
| return mangled; |
| } |
| *cp++ = ')'; |
| *cp++ = ' '; /* overwriting 1st char of method name... */ |
| strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
| } |
| while (*cp && *cp == '_') |
| cp++; /* skip any initial underbars in method name */ |
| for (; *cp; cp++) |
| if (*cp == '_') |
| *cp = ':'; /* replace remaining '_' with ':' */ |
| *cp++ = ']'; /* closing right brace */ |
| *cp++ = 0; /* string terminator */ |
| return demangled; |
| } |
| else |
| /* APPLE LOCAL begin radar 4638467,4734562, 3904139 */ |
| #ifdef OBJCPLUS |
| return cxx_printable_name (decl, vrb); |
| #else |
| return vrb == 2 ? mangled : mangled; /* not an objc mangled name */ |
| #endif |
| /* APPLE LOCAL end radar 4638467,4734562, 3904139 */ |
| } |
| |
| const char * |
| /* APPLE LOCAL radar 4734562 */ |
| objc_printable_name (tree decl, int vrb) |
| { |
| /* APPLE LOCAL radar 4638467,4734562 */ |
| return objc_demangle (decl, vrb); |
| } |
| |
| static void |
| init_objc (void) |
| { |
| gcc_obstack_init (&util_obstack); |
| util_firstobj = (char *) obstack_finish (&util_obstack); |
| |
| errbuf = (char *) xmalloc (1024 * 10); |
| hash_init (); |
| synth_module_prologue (); |
| } |
| |
| static void |
| finish_objc (void) |
| { |
| struct imp_entry *impent; |
| tree chain; |
| /* The internally generated initializers appear to have missing braces. |
| Don't warn about this. */ |
| int save_warn_missing_braces = warn_missing_braces; |
| warn_missing_braces = 0; |
| |
| /* A missing @end may not be detected by the parser. */ |
| if (objc_implementation_context) |
| { |
| warning ("%<@end%> missing in implementation context"); |
| finish_class (objc_implementation_context); |
| objc_ivar_chain = NULL_TREE; |
| objc_implementation_context = NULL_TREE; |
| } |
| |
| /* Process the static instances here because initialization of objc_symtab |
| depends on them. */ |
| if (objc_static_instances) |
| generate_static_references (); |
| |
| if (imp_list || class_names_chain |
| /* APPLE LOCAL C* property metadata (Radar 4498373) */ |
| || prop_names_attr_chain |
| || meth_var_names_chain || meth_var_types_chain || sel_ref_chain) |
| generate_objc_symtab_decl (); |
| |
| for (impent = imp_list; impent; impent = impent->next) |
| { |
| objc_implementation_context = impent->imp_context; |
| implementation_template = impent->imp_template; |
| |
| /* APPLE LOCAL begin ObjC new abi */ |
| if (flag_objc_abi == 2) |
| { |
| UOBJC_V2_CLASS_decl = impent->class_v2_decl; |
| UOBJC_V2_METACLASS_decl = impent->meta_v2_decl; |
| } |
| else |
| { |
| UOBJC_CLASS_decl = impent->class_decl; |
| UOBJC_METACLASS_decl = impent->meta_decl; |
| } |
| /* APPLE LOCAL end ObjC new abi */ |
| |
| /* Dump the @interface of each class as we compile it, if the |
| -gen-decls option is in use. TODO: Dump the classes in the |
| order they were found, rather than in reverse order as we |
| are doing now. */ |
| if (flag_gen_declaration) |
| { |
| dump_interface (gen_declaration_file, objc_implementation_context); |
| } |
| |
| if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| /* all of the following reference the string pool... */ |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| generate_v2_ivar_lists (); |
| generate_v2_dispatch_tables (); |
| /* APPLE LOCAL C* property metadata (Radar 4498373, 4559114) */ |
| generate_v2_property_tables (NULL_TREE); |
| generate_v2_shared_structures (impent->has_cxx_cdtors |
| /* APPLE LOCAL radar 4923634 */ |
| ? OBJC2_CLS_HAS_CXX_STRUCTORS |
| : 0); |
| } |
| else |
| { |
| generate_ivar_lists (); |
| generate_dispatch_tables (); |
| /* APPLE LOCAL begin radar 4585769 - Objective-C 1.0 extensions */ |
| generate_v2_property_tables (NULL_TREE); |
| UOBJC_CLASS_EXT_decl = generate_objc_class_ext (UOBJC_V2_PROPERTY_decl); |
| /* APPLE LOCAL end radar 4585769 - Objective-C 1.0 extensions */ |
| |
| /* APPLE LOCAL begin mainline */ |
| generate_shared_structures (impent->has_cxx_cdtors |
| ? CLS_HAS_CXX_STRUCTORS |
| : 0); |
| } |
| /* APPLE LOCAL end mainline */ |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| /* APPLE LOCAL radar 4695109 */ |
| /* PROTOCOL_IMPLEMENTATION_TYPE removed */ |
| else |
| { |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (flag_objc_abi == 2) |
| { |
| generate_v2_dispatch_tables (); |
| /* APPLE LOCAL C* property metadata (Radar 4498373, 4559114) */ |
| generate_v2_property_tables (NULL_TREE); |
| generate_v2_category (objc_implementation_context, impent); |
| } |
| else |
| { |
| generate_dispatch_tables (); |
| /* APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions */ |
| generate_v2_property_tables (NULL_TREE); |
| /* APPLE LOCAL radar 4349690 */ |
| generate_category (objc_implementation_context, impent); |
| } |
| /* APPLE LOCAL end ObjC abi v2 */ |
| } |
| } |
| |
| /* If we are using an array of selectors, we must always |
| finish up the array decl even if no selectors were used. */ |
| if (! flag_next_runtime || sel_ref_chain) |
| build_selector_translation_table (); |
| |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| if (message_ref_chain) |
| build_message_ref_translation_table (); |
| if (classlist_ref_chain) |
| build_classlist_translation_table (false); |
| if (metaclasslist_ref_chain) |
| build_classlist_translation_table (true); |
| /* APPLE LOCAL begin radar 4535676 */ |
| if (classlist_super_ref_chain) |
| build_classlist_super_translation_table (false); |
| if (metaclasslist_super_ref_chain) |
| build_classlist_super_translation_table (true); |
| /* APPLE LOCAL end radar 4535676 */ |
| if (ivar_offset_ref_chain) |
| generate_v2_ivar_offset_ref_lists (); |
| if (protocol_chain) |
| { |
| if (flag_objc_abi == 2) |
| { |
| generate_v2_protocols (); |
| } |
| else |
| generate_protocols (); |
| } |
| /* APPLE LOCAL begin radar 4533974 - ObjC new protocol */ |
| if (protocol_list_chain) |
| build_protocol_list_address_table (); |
| if (protocollist_ref_chain) |
| build_protocollist_translation_table (); |
| /* APPLE LOCAL end radar 4533974 - ObjC new protocol */ |
| if (class_list_chain) |
| build_class_list_address_table (false); |
| if (category_list_chain) |
| build_category_list_address_table (false); |
| if (nonlazy_class_list_chain) |
| build_class_list_address_table (true); |
| if (nonlazy_category_list_chain) |
| build_category_list_address_table (true); |
| /* APPLE LOCAL end ObjC abi v2 */ |
| |
| /* APPLE LOCAL mainline */ |
| /* APPLE LOCAL radar 4810587 */ |
| generate_objc_image_info (); |
| |
| /* Arrange for ObjC data structures to be initialized at run time. */ |
| if (objc_implementation_context || class_names_chain || objc_static_instances |
| || meth_var_names_chain || meth_var_types_chain || sel_ref_chain) |
| { |
| /* APPLE LOCAL begin ObjC abi v2 */ |
| /* APPLE LOCAL radar 4531482 */ |
| if (flag_objc_abi != 2) |
| build_module_descriptor (); |
| /* APPLE LOCAL end ObjC abi v2 */ |
| |
| if (!flag_next_runtime) |
| build_module_initializer_routine (); |
| } |
| |
| /* Dump the class references. This forces the appropriate classes |
| to be linked into the executable image, preserving unix archive |
| semantics. This can be removed when we move to a more dynamically |
| linked environment. */ |
| |
| for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| handle_class_ref (chain); |
| if (TREE_PURPOSE (chain)) |
| generate_classref_translation_entry (chain); |
| } |
| |
| for (impent = imp_list; impent; impent = impent->next) |
| handle_impent (impent); |
| |
| /* Dump the string table last. */ |
| |
| generate_strings (); |
| |
| if (warn_selector) |
| { |
| int slot; |
| hash hsh; |
| |
| /* Run through the selector hash tables and print a warning for any |
| selector which has multiple methods. */ |
| |
| for (slot = 0; slot < SIZEHASHTABLE; slot++) |
| { |
| for (hsh = cls_method_hash_list[slot]; hsh; hsh = hsh->next) |
| check_duplicates (hsh, 0, 1); |
| for (hsh = nst_method_hash_list[slot]; hsh; hsh = hsh->next) |
| check_duplicates (hsh, 0, 1); |
| } |
| } |
| |
| warn_missing_braces = save_warn_missing_braces; |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| { |
| int i; |
| for (i = 0; i < OCTI_MAX; i++) |
| if (objc_global_trees[i] && DECL_P (objc_global_trees[i])) |
| /* Let optimizer know that this decl is not removable. */ |
| DECL_PRESERVE_P (objc_global_trees[i]) = 1; |
| } |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| } |
| |
| /* Subroutines of finish_objc. */ |
| |
| static void |
| generate_classref_translation_entry (tree chain) |
| { |
| tree expr, decl, type; |
| |
| decl = TREE_PURPOSE (chain); |
| type = TREE_TYPE (decl); |
| |
| expr = add_objc_string (TREE_VALUE (chain), class_names); |
| expr = convert (type, expr); /* cast! */ |
| |
| /* The decl that is the one that we |
| forward declared in build_class_reference. */ |
| finish_var_decl (decl, expr); |
| return; |
| } |
| |
| static void |
| handle_class_ref (tree chain) |
| { |
| const char *name = IDENTIFIER_POINTER (TREE_VALUE (chain)); |
| char *string = (char *) alloca (strlen (name) + 30); |
| tree decl; |
| tree exp; |
| |
| sprintf (string, "%sobjc_class_name_%s", |
| (flag_next_runtime ? "." : "__"), name); |
| |
| #ifdef ASM_DECLARE_UNRESOLVED_REFERENCE |
| if (flag_next_runtime) |
| { |
| ASM_DECLARE_UNRESOLVED_REFERENCE (asm_out_file, string); |
| return; |
| } |
| #endif |
| |
| /* Make a decl for this name, so we can use its address in a tree. */ |
| decl = build_decl (VAR_DECL, get_identifier (string), char_type_node); |
| DECL_EXTERNAL (decl) = 1; |
| TREE_PUBLIC (decl) = 1; |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| /* This decl's name is special. Ask llvm to not add leading underscore by |
| setting it as a user supplied asm name. */ |
| set_user_assembler_name(decl, string); |
| /* Let optimizer know that this decl is not removable. */ |
| DECL_PRESERVE_P (decl) = 1; |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| |
| pushdecl (decl); |
| rest_of_decl_compilation (decl, 0, 0); |
| |
| /* Make a decl for the address. */ |
| sprintf (string, "%sobjc_class_ref_%s", |
| (flag_next_runtime ? "." : "__"), name); |
| exp = build1 (ADDR_EXPR, string_type_node, decl); |
| decl = build_decl (VAR_DECL, get_identifier (string), string_type_node); |
| DECL_INITIAL (decl) = exp; |
| TREE_STATIC (decl) = 1; |
| TREE_USED (decl) = 1; |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| /* This decl's name is special. Ask llvm to not add leading underscore by |
| setting it as a user supplied asm name. */ |
| set_user_assembler_name(decl, string); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| |
| pushdecl (decl); |
| rest_of_decl_compilation (decl, 0, 0); |
| } |
| |
| static void |
| handle_impent (struct imp_entry *impent) |
| { |
| char *string; |
| |
| objc_implementation_context = impent->imp_context; |
| implementation_template = impent->imp_template; |
| |
| if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE) |
| { |
| const char *const class_name = |
| IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)); |
| |
| string = (char *) alloca (strlen (class_name) + 30); |
| |
| sprintf (string, "%sobjc_class_name_%s", |
| (flag_next_runtime ? "." : "__"), class_name); |
| } |
| else if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| const char *const class_name = |
| IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)); |
| const char *const class_super_name = |
| IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)); |
| |
| string = (char *) alloca (strlen (class_name) |
| + strlen (class_super_name) + 30); |
| |
| /* Do the same for categories. Even though no references to |
| these symbols are generated automatically by the compiler, it |
| gives you a handle to pull them into an archive by hand. */ |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| /* The * is a sentinel for gcc's back end, but is not wanted by llvm. */ |
| sprintf (string, "%sobjc_category_name_%s_%s", |
| (flag_next_runtime ? "." : "__"), class_name, class_super_name); |
| #else |
| sprintf (string, "*%sobjc_category_name_%s_%s", |
| (flag_next_runtime ? "." : "__"), class_name, class_super_name); |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| } |
| else |
| return; |
| |
| #ifdef ASM_DECLARE_CLASS_REFERENCE |
| if (flag_next_runtime) |
| { |
| ASM_DECLARE_CLASS_REFERENCE (asm_out_file, string); |
| return; |
| } |
| else |
| #endif |
| { |
| tree decl, init; |
| |
| init = build_int_cst (c_common_type_for_size (BITS_PER_WORD, 1), 0); |
| decl = build_decl (VAR_DECL, get_identifier (string), TREE_TYPE (init)); |
| TREE_PUBLIC (decl) = 1; |
| TREE_READONLY (decl) = 1; |
| TREE_USED (decl) = 1; |
| TREE_CONSTANT (decl) = 1; |
| DECL_CONTEXT (decl) = 0; |
| DECL_ARTIFICIAL (decl) = 1; |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| DECL_VISIBILITY (decl) = VISIBILITY_DEFAULT; |
| DECL_VISIBILITY_SPECIFIED (decl) = 1; |
| set_user_assembler_name(decl, string); |
| /* Let optimizer know that this decl is not removable. */ |
| DECL_PRESERVE_P (decl) = 1; |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| DECL_INITIAL (decl) = init; |
| assemble_variable (decl, 1, 0, 0); |
| } |
| } |
| |
| /* The Fix-and-Continue functionality available in Mac OS X 10.3 and |
| later requires that ObjC translation units participating in F&C be |
| specially marked. The following routine accomplishes this. */ |
| |
| /* static int _OBJC_IMAGE_INFO[2] = { 0, 1 }; */ |
| |
| static void |
| generate_objc_image_info (void) |
| { |
| tree decl, initlist; |
| /* APPLE LOCAL begin mainline */ |
| int flags |
| = ((flag_replace_objc_classes && imp_list ? 1 : 0) |
| | (flag_objc_gc ? 2 : 0)); |
| /* APPLE LOCAL end mainline */ |
| /* APPLE LOCAL begin radar 4810609 */ |
| if (flag_objc_gc_only) |
| flags |= 6; |
| /* APPLE LOCAL end radar 4810609 */ |
| |
| /* APPLE LOCAL begin radar 4810587, radar 4964338 */ |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| /* Darwin linker prefers to use 'L' as a prefix. GCC codegen handles this |
| later while emitting symbols, but fix it here for llvm. */ |
| decl = build_decl (VAR_DECL, get_identifier ("L_OBJC_IMAGE_INFO"), |
| build_array_type |
| (integer_type_node, |
| build_index_type (build_int_cst (NULL_TREE, 2 - 1)))); |
| #else |
| /* APPLE LOCAL end LLVM */ |
| decl = build_decl (VAR_DECL, get_identifier ("_OBJC_IMAGE_INFO"), |
| build_array_type |
| (integer_type_node, |
| build_index_type (build_int_cst (NULL_TREE, 2 - 1)))); |
| /* APPLE LOCAL LLVM */ |
| #endif |
| initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 0)); |
| initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, flags), initlist); |
| initlist = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist)); |
| TREE_TYPE (initlist) = TREE_TYPE (decl); |
| /* APPLE LOCAL begin radar 4888238 */ |
| TREE_PUBLIC (decl) = 0; |
| TREE_STATIC (decl) = 1; |
| /* APPLE LOCAL end radar 4888238 */ |
| TREE_READONLY (decl) = 1; |
| TREE_USED (decl) = 1; |
| TREE_CONSTANT (decl) = 1; |
| DECL_CONTEXT (decl) = 0; |
| DECL_ARTIFICIAL (decl) = 1; |
| DECL_INITIAL (decl) = initlist; |
| /* APPLE LOCAL begin LLVM */ |
| #ifdef ENABLE_LLVM |
| /* Let optimizer know that this decl is not removable. */ |
| set_user_assembler_name(decl, IDENTIFIER_POINTER (DECL_NAME(decl))); |
| DECL_PRESERVE_P (decl) = 1; |
| #endif |
| /* APPLE LOCAL end LLVM */ |
| assemble_variable (decl, 1, 0, 0); |
| } |
| /* APPLE LOCAL end radar 4810587, radar 4964338 */ |
| |
| /* APPLE LOCAL begin radar 4133425 */ |
| /* Routine is called to issue diagnostic when reference to a private |
| ivar is made and no other variable with same name is found in |
| current scope. */ |
| bool |
| objc_diagnose_private_ivar (tree id) |
| { |
| tree ivar; |
| if (!objc_method_context) |
| return false; |
| ivar = is_ivar (objc_ivar_chain, id); |
| if (ivar && is_private (ivar)) |
| { |
| error ("instance variable %qs is declared private", |
| IDENTIFIER_POINTER (id)); |
| return true; |
| } |
| return false; |
| } |
| /* APPLE LOCAL end radar 4133425 */ |
| |
| /* Look up ID as an instance variable. OTHER contains the result of |
| the C or C++ lookup, which we may want to use instead. */ |
| /* APPLE LOCAL begin C* property (Radar 4436866) */ |
| /* APPLE LOCAL radar 4668023 */ |
| /* Support for referencing property name without use of 'self' qualifier is removed */ |
| |
| tree |
| objc_lookup_ivar (tree other, tree id) |
| { |
| tree ivar; |
| |
| /* If we are not inside of an ObjC method, ivar lookup makes no sense. */ |
| if (!objc_method_context) |
| return other; |
| |
| if (!strcmp (IDENTIFIER_POINTER (id), "super")) |
| /* We have a message to super. */ |
| return get_super_receiver (); |
| |
| /* In a class method, look up an instance variable only as a last |
| resort. */ |
| if (TREE_CODE (objc_method_context) == CLASS_METHOD_DECL |
| && other && other != error_mark_node) |
| return other; |
| |
| /* Look up the ivar, but do not use it if it is not accessible. */ |
| ivar = is_ivar (objc_ivar_chain, id); |
| |
| if (!ivar || is_private (ivar)) |
| return other; |
| |
| /* In an instance method, a local variable (or parameter) may hide the |
| instance variable. */ |
| if (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL |
| /* APPLE LOCAL begin mainline */ |
| && other && other != error_mark_node |
| #ifdef OBJCPLUS |
| && CP_DECL_CONTEXT (other) != global_namespace) |
| #else |
| && !DECL_FILE_SCOPE_P (other)) |
| #endif |
| /* APPLE LOCAL end mainline */ |
| { |
| warning ("local declaration of %qs hides instance variable", |
| IDENTIFIER_POINTER (id)); |
| |
| return other; |
| } |
| |
| /* At this point, we are either in an instance method with no obscuring |
| local definitions, or in a class method with no alternate definitions |
| at all. */ |
| return build_ivar_reference (id); |
| } |
| /* APPLE LOCAL end C* property (Radar 4436866) */ |
| |
| /* APPLE LOCAL begin mainline */ |
| /* Possibly rewrite a function CALL into an OBJ_TYPE_REF expression. This |
| needs to be done if we are calling a function through a cast. */ |
| |
| tree |
| objc_rewrite_function_call (tree function, tree params) |
| { |
| if (TREE_CODE (function) == NOP_EXPR |
| && TREE_CODE (TREE_OPERAND (function, 0)) == ADDR_EXPR |
| && TREE_CODE (TREE_OPERAND (TREE_OPERAND (function, 0), 0)) |
| == FUNCTION_DECL) |
| { |
| function = build (OBJ_TYPE_REF, TREE_TYPE (function), |
| TREE_OPERAND (function, 0), |
| TREE_VALUE (params), size_zero_node); |
| } |
| |
| return function; |
| } |
| |
| /* Look for the special case of OBJC_TYPE_REF with the address of |
| a function in OBJ_TYPE_REF_EXPR (presumably objc_msgSend or one |
| of its cousins). */ |
| |
| enum gimplify_status |
| objc_gimplify_expr (tree *expr_p, tree *pre_p, tree *post_p) |
| { |
| enum gimplify_status r0, r1; |
| |
| if (TREE_CODE (*expr_p) == OBJ_TYPE_REF |
| && TREE_CODE (OBJ_TYPE_REF_EXPR (*expr_p)) == ADDR_EXPR |
| && TREE_CODE (TREE_OPERAND (OBJ_TYPE_REF_EXPR (*expr_p), 0)) |
| == FUNCTION_DECL) |
| { |
| /* Postincrements in OBJ_TYPE_REF_OBJECT don't affect the |
| value of the OBJ_TYPE_REF, so force them to be emitted |
| during subexpression evaluation rather than after the |
| OBJ_TYPE_REF. This permits objc_msgSend calls in Objective |
| C to use direct rather than indirect calls when the |
| object expression has a postincrement. */ |
| r0 = gimplify_expr (&OBJ_TYPE_REF_OBJECT (*expr_p), pre_p, NULL, |
| is_gimple_val, fb_rvalue); |
| r1 = gimplify_expr (&OBJ_TYPE_REF_EXPR (*expr_p), pre_p, post_p, |
| is_gimple_val, fb_rvalue); |
| |
| return MIN (r0, r1); |
| } |
| |
| #ifdef OBJCPLUS |
| return cp_gimplify_expr (expr_p, pre_p, post_p); |
| #else |
| return c_gimplify_expr (expr_p, pre_p, post_p); |
| #endif |
| } |
| |
| /* Given a CALL expression, find the function being called. The ObjC |
| version looks for the OBJ_TYPE_REF_EXPR which is used for objc_msgSend. */ |
| |
| tree |
| objc_get_callee_fndecl (tree call_expr) |
| { |
| tree addr = TREE_OPERAND (call_expr, 0); |
| if (TREE_CODE (addr) != OBJ_TYPE_REF) |
| return 0; |
| |
| addr = OBJ_TYPE_REF_EXPR (addr); |
| |
| /* If the address is just `&f' for some function `f', then we know |
| that `f' is being called. */ |
| if (TREE_CODE (addr) == ADDR_EXPR |
| && TREE_CODE (TREE_OPERAND (addr, 0)) == FUNCTION_DECL) |
| return TREE_OPERAND (addr, 0); |
| |
| return 0; |
| } |
| /* APPLE LOCAL end mainline */ |
| |
| /* APPLE LOCAL begin C* language */ |
| |
| /* This routine builds the following type. |
| |
| struct __objcFastEnumerationState { |
| unsigned long state; |
| id *itemsPtr; |
| unsigned long *mutationsPtr; |
| unsigned long extra[5]; |
| }; */ |
| |
| static void |
| build_objc_fast_enum_state_type (void) |
| { |
| tree field_decl, field_decl_chain; |
| objc_fast_enum_state_type = start_struct (RECORD_TYPE, |
| get_identifier ("__objcFastEnumerationState")); |
| |
| /* unsigned long state; */ |
| field_decl = create_field_decl (long_unsigned_type_node, "state"); |
| field_decl_chain = field_decl; |
| |
| /* id *itemsPtr; */ |
| field_decl = create_field_decl (build_pointer_type (objc_object_type), "itemsPtr"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* unsigned long *mutationsPtr; */ |
| field_decl = create_field_decl (build_pointer_type ( |
| long_unsigned_type_node), "mutationsPtr"); |
| chainon (field_decl_chain, field_decl); |
| |
| /* unsigned long extra[5]; */ |
| field_decl = create_field_decl (build_array_type |
| (long_unsigned_type_node, |
| build_index_type |
| (build_int_cst (NULL_TREE, 5 - 1))), |
| "extra"); |
| chainon (field_decl_chain, field_decl); |
| |
| finish_struct (objc_fast_enum_state_type, field_decl_chain, NULL_TREE); |
| } |
| |
| /* This routine creates a named temporary local variable. */ |
| |
| static tree |
| objc_create_named_tmp_var (tree type, const char *prefix) |
| { |
| tree decl = create_tmp_var_raw (type, prefix); |
| DECL_CONTEXT (decl) = current_function_decl; |
| return decl; |
| } |
| |
| /* This routine builds and returns an assortment of objc components needed in |
| synthesis of the foreach statement; including: |
| |
| __objcFastEnumerationState enumState = { 0 }; |
| id items[16]; |
| unsigned int limit; |
| unsigned long startMutations; |
| unsigned int counter; |
| [collection countByEnumeratingWithState:&enumState objects:items count:16]; |
| |
| it returns expression for: |
| objc_enumerationMutation (self) */ |
| |
| tree |
| objc_build_foreach_components (tree receiver, tree *enumState_decl, |
| tree *items_decl, |
| tree *limit_decl, |
| tree *startMutations_decl, |
| tree *counter_decl, |
| tree *countByEnumeratingWithState) |
| { |
| tree constructor_fields, initlist, init; |
| tree type, exp; |
| tree sel_name, method_params; |
| |
| tree fast_enum_state_type = objc_fast_enum_state_type; |
| tree enum_st_type_decl = lookup_name (get_identifier ("NSFastEnumerationState")); |
| /* APPLE LOCAL radar 4531086 */ |
| OBJC_WARN_OBJC2_FEATURES ("foreach-collection-statement"); |
| if (enum_st_type_decl && TREE_CODE (enum_st_type_decl) == TYPE_DECL) |
| fast_enum_state_type = DECL_ORIGINAL_TYPE (enum_st_type_decl) |
| ? DECL_ORIGINAL_TYPE (enum_st_type_decl) |
| : TREE_TYPE (enum_st_type_decl); |
| gcc_assert (fast_enum_state_type != NULL_TREE |
| && TREE_CODE (fast_enum_state_type) == RECORD_TYPE); |
| constructor_fields = TYPE_FIELDS (fast_enum_state_type); |
| /* __objcFastEnumerationState enumState = { 0 }; */ |
| *enumState_decl = objc_create_named_tmp_var (fast_enum_state_type, "cstar"); |
| /* LLVM LOCAL begin */ |
| initlist = build_tree_list (constructor_fields, |
| convert (TREE_TYPE(constructor_fields), |
| build_int_cst (NULL_TREE, 0))); |
| /* LLVM LOCAL end */ |
| init = objc_build_constructor (fast_enum_state_type, initlist); |
| DECL_INITIAL (*enumState_decl) = init; |
| |
| /* id items[16]; */ |
| type = build_array_type (objc_object_type, |
| build_index_type (build_int_cst (NULL_TREE, 16 - 1))); |
| *items_decl = objc_create_named_tmp_var (type, "cstar"); |
| |
| /* unsigned int limit */ |
| *limit_decl = objc_create_named_tmp_var (unsigned_type_node, "cstar"); |
| |
| /* unsigned long startMutations */ |
| *startMutations_decl = objc_create_named_tmp_var (long_unsigned_type_node, "cstar"); |
| |
| /* unsigned int counter */ |
| *counter_decl = objc_create_named_tmp_var (unsigned_type_node, "cstar"); |
| |
| /* [collection countByEnumeratingWithState:&enumState objects:items count:16] */ |
| sel_name = get_identifier ("countByEnumeratingWithState:objects:count:"); |
| exp = build_fold_addr_expr (*enumState_decl); |
| method_params = build_tree_list (NULL_TREE, exp); |
| chainon (method_params, |
| build_tree_list (NULL_TREE, *items_decl)); |
| chainon (method_params, |
| build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 16))); |
| |
| exp = objc_finish_message_expr (receiver, sel_name, method_params); |
| *countByEnumeratingWithState = exp; |
| |
| /* objc_enumerationMutation (self) */ |
| exp = build_function_call (objc_enum_mutation_decl, |
| build_tree_list (NULL_TREE, save_expr (receiver))); |
| |
| return exp; |
| } |
| |
| /* This routine returns true if TYP is a valid objc object type, |
| suitable for messaging; false otherwise. */ |
| |
| bool |
| objc_type_valid_for_messaging (tree typ) |
| { |
| if (!POINTER_TYPE_P (typ)) |
| return false; |
| |
| do |
| typ = TREE_TYPE (typ); /* Remove indirections. */ |
| while (POINTER_TYPE_P (typ)); |
| |
| if (TREE_CODE (typ) != RECORD_TYPE) |
| return false; |
| |
| /* type 'Class' is OK */ |
| return objc_is_object_id (typ) |
| || objc_is_class_id (typ) || TYPE_HAS_OBJC_INFO (typ); |
| } |
| |
| #ifndef OBJCPLUS |
| /* Synthesizer routine for C*'s feareach statement. |
| |
| It synthesizes: |
| for ( type elem in collection) { stmts; } |
| |
| Into: |
| { |
| type elem; |
| __objcFastEnumerationState enumState = { 0 }; |
| id items[16]; |
| |
| unsigned long limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]; |
| if (limit) { |
| unsigned long startMutations = *enumState.mutationsPtr; |
| do { |
| unsigned long counter = 0; |
| do { |
| if (startMutations != *enumState.mutationsPtr) objc_enumerationMutation(collection); |
| elem = enumState.itemsPtr[counter++]; |
| stmts; |
| } while (counter < limit); |
| } while (limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]); |
| } |
| else |
| elem = nil; radar 4854605, 5128402 */ |
| |
| void |
| objc_finish_foreach_loop (location_t location, tree cond, tree for_body, tree blab, tree clab) |
| { |
| tree enumState_decl, items_decl, limit_decl, limit_decl_assign_expr; |
| tree startMutations_decl, counter_decl; |
| tree enumerationMutation_call_exp, countByEnumeratingWithState; |
| tree exp; |
| tree receiver, elem_decl; |
| tree bind; |
| tree if_condition, do_condition; |
| tree outer_if_body, inner_if_body; |
| tree outer_if_block_start, inner_if_block_start; |
| tree outer_do_body, inner_do_body; |
| tree inner_do_block_start, outer_do_block_start; |
| tree body; |
| location_t save_input_location = input_location; |
| tree exit_label; |
| /* APPLE LOCAL radar 4854605 - radar 5128402 */ |
| tree outer_else_body; |
| |
| receiver = TREE_VALUE (cond); |
| elem_decl = TREE_PURPOSE (cond); |
| |
| /* APPLE LOCAL begin radar 5130983 */ |
| if (!lvalue_p (elem_decl)) |
| { |
| error ("selector element must be an lvalue"); |
| return; |
| } |
| /* APPLE LOCAL end radar 5130983 */ |
| |
| if (!objc_type_valid_for_messaging (TREE_TYPE (elem_decl))) |
| { |
| error ("selector element does not have a valid object type"); |
| return; |
| } |
| |
| if (!objc_type_valid_for_messaging (TREE_TYPE (receiver))) |
| { |
| error ("expression does not have a valid object type"); |
| return; |
| } |
| |
| input_location = location; |
| enumerationMutation_call_exp = objc_build_foreach_components (receiver, &enumState_decl, |
| &items_decl, &limit_decl, |
| &startMutations_decl, &counter_decl, |
| &countByEnumeratingWithState); |
| |
| /* __objcFastEnumerationState enumState = { 0 }; */ |
| exp = build_stmt (DECL_EXPR, enumState_decl); |
| bind = build (BIND_EXPR, void_type_node, enumState_decl, exp, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| |
| /* id items[16]; */ |
| bind = build (BIND_EXPR, void_type_node, items_decl, NULL, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| |
| /* Generate this statement and add it to the list. */ |
| /* limit = [collection countByEnumeratingWithState:&enumState objects:items count:16] */ |
| limit_decl_assign_expr = build (MODIFY_EXPR, TREE_TYPE (limit_decl), limit_decl, |
| countByEnumeratingWithState); |
| bind = build (BIND_EXPR, void_type_node, limit_decl, NULL, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| |
| outer_if_block_start = c_begin_compound_stmt (true); |
| /* if (limit) { */ |
| outer_if_body = c_begin_compound_stmt (true); |
| |
| /* unsigned long startMutations = *enumState.mutationsPtr; */ |
| exp = objc_build_component_ref (enumState_decl, get_identifier("mutationsPtr")); |
| exp = build_indirect_ref (exp, "unary *"); |
| exp = build (MODIFY_EXPR, void_type_node, startMutations_decl, exp); |
| bind = build (BIND_EXPR, void_type_node, startMutations_decl, exp, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| |
| outer_do_block_start = c_begin_compound_stmt (true); |
| /* do { */ |
| outer_do_body = c_begin_compound_stmt (true); |
| |
| /* unsigned int counter = 0; */ |
| exp = build (MODIFY_EXPR, void_type_node, counter_decl, |
| fold_convert (TREE_TYPE (counter_decl), integer_zero_node)); |
| bind = build (BIND_EXPR, void_type_node, counter_decl, exp, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| |
| inner_do_block_start = c_begin_compound_stmt (true); |
| /* do { */ |
| inner_do_body = c_begin_compound_stmt (true); |
| |
| inner_if_block_start = c_begin_compound_stmt (true); |
| /* if (startMutations != *enumState.mutationsPtr) objc_enumerationMutation (collection); */ |
| inner_if_body = c_begin_compound_stmt (true); |
| exp = objc_build_component_ref (enumState_decl, get_identifier("mutationsPtr")); |
| exp = build_indirect_ref (exp, "unary *"); |
| if_condition = build_binary_op (NE_EXPR, startMutations_decl, exp, 1); |
| body = build_function_call (objc_enum_mutation_decl, |
| build_tree_list (NULL_TREE, save_expr (receiver))); |
| add_stmt (body); |
| inner_if_body = c_end_compound_stmt (inner_if_body, true); |
| c_finish_if_stmt (location, if_condition, inner_if_body, NULL, false); |
| add_stmt (c_end_compound_stmt (inner_if_block_start, true)); |
| |
| /* elem = enumState.itemsPtr [counter]; */ |
| exp = objc_build_component_ref (enumState_decl, get_identifier("itemsPtr")); |
| exp = build_array_ref (exp, counter_decl); |
| add_stmt (build (MODIFY_EXPR, void_type_node, elem_decl, exp)); |
| TREE_USED (elem_decl) = 1; |
| |
| /* counter++; */ |
| exp = build2 (PLUS_EXPR, TREE_TYPE (counter_decl), counter_decl, |
| build_int_cst (NULL_TREE, 1)); |
| add_stmt (build (MODIFY_EXPR, void_type_node, counter_decl, exp)); |
| |
| /* stmts; */ |
| add_stmt (for_body); |
| |
| /* } while (counter < limit ); */ |
| do_condition = build_binary_op (LT_EXPR, counter_decl, limit_decl, 1); |
| inner_do_body = c_end_compound_stmt (inner_do_body, true); |
| c_finish_loop (location, do_condition, NULL, inner_do_body, NULL_TREE, clab, false); |
| add_stmt (c_end_compound_stmt (inner_do_block_start, true)); |
| |
| /* } while (limit = [collection countByEnumeratingWithState:&enumState objects:items count:16]); */ |
| exp = unshare_expr (limit_decl_assign_expr); |
| do_condition = build_binary_op (NE_EXPR, exp, |
| fold_convert (TREE_TYPE (limit_decl), integer_zero_node), |
| 1); |
| outer_do_body = c_end_compound_stmt (outer_do_body, true); |
| /* New spec. requires that if no match was found; i.e. foreach exited with |
| no match, 'elem' be set to nil. So, we use a new label for getting out of |
| of the outer while loop and set 'elem=nill' after this label. */ |
| exit_label = create_artificial_label (); |
| c_finish_loop (location, do_condition, NULL, outer_do_body, exit_label, NULL_TREE, false); |
| /* elem = nil */ |
| add_stmt (build (MODIFY_EXPR, void_type_node, elem_decl, |
| fold_convert (TREE_TYPE (elem_decl), integer_zero_node))); |
| if (blab) |
| add_stmt (build1 (LABEL_EXPR, void_type_node, blab)); |
| add_stmt (c_end_compound_stmt (outer_do_block_start, true)); |
| |
| /* } */ |
| if_condition = unshare_expr (do_condition); |
| outer_if_body = c_end_compound_stmt (outer_if_body, true); |
| /* APPLE LOCAL begin radar 4854605 - radar 5128402 */ |
| /* else {elem = nil; } */ |
| outer_else_body = c_begin_compound_stmt (true); |
| add_stmt (build (MODIFY_EXPR, void_type_node, elem_decl, |
| fold_convert (TREE_TYPE (elem_decl), integer_zero_node))); |
| outer_else_body = c_end_compound_stmt (outer_else_body, true); |
| c_finish_if_stmt (location, if_condition, outer_if_body, outer_else_body, false); |
| /* APPLE LOCAL end radar 4854605 - radar 5128402 */ |
| add_stmt (c_end_compound_stmt (outer_if_block_start, true)); |
| input_location = save_input_location; |
| return; |
| } |
| #endif |
| |
| /* This routine issues a diagnostic if a @selector expression is |
| type cast to anothing other than SEL. */ |
| void |
| diagnose_selector_cast (tree cast_type, tree sel_exp) |
| { |
| tree type = TREE_TYPE (sel_exp); |
| if (type) |
| { |
| if (type == objc_selector_type && cast_type != objc_selector_type) |
| /* @selector expression type cast to something other than a |
| matching type. */ |
| if (flag_objc_abi == 2 || flag_objc2_check) |
| warning ("type-cast of @selector expression won't be supported in future"); |
| } |
| } |
| |
| bool |
| objc_method_decl (enum tree_code opcode) |
| { |
| return opcode == INSTANCE_METHOD_DECL || opcode == CLASS_METHOD_DECL; |
| } |
| |
| /* |
| This routine builds a comma-expr tree represents pre/post incr/decr expression |
| tree of the a property (see below). |
| |
| CODE is one of POSTINCREMENT_EXPR (prop++), POSTDECREMENT_EXPR (prop--), |
| PREINCREMENT_EXPR (++prop), PREDECREMENT_EXPR (--prop). |
| GETTER_EXPR is the property in the form of a property getter call. |
| INC is the amount property is incrmented or decremented by. |
| |
| for POSTINCREMENT_EXPR we generate: (tmp = prop, prop = tmp+1, tmp). |
| for POSTDECREMENT_EXPR we generate: (tmp = prop, prop = tmp-1, tmp). |
| for PREINCREMENT_EXPR we generate: (tmp = prop+1, prop = tmp, tmp). |
| for PREDECREMENT_EXPR we generate: (tmp = prop-1, prop = tmp, tmp). |
| Function returns NULL_TREE (if not a valid property tree) or above |
| comma-expression tree. |
| */ |
| |
| static tree |
| objc_build_compound_incr_decr_setter_call (tree receiver, tree prop_ident, |
| enum tree_code code, tree getter_expr, |
| tree inc) |
| { |
| tree temp, bind, rhs, comma_exp; |
| temp = objc_create_named_tmp_var (TREE_TYPE (inc), "prop"); |
| bind = build (BIND_EXPR, void_type_node, temp, NULL, NULL); |
| TREE_SIDE_EFFECTS (bind) = 1; |
| add_stmt (bind); |
| /* build rhs expression of 'tmp = exp' statement. */ |
| if (code == POSTINCREMENT_EXPR || code == POSTDECREMENT_EXPR) |
| rhs = getter_expr; |
| else if (code == PREINCREMENT_EXPR) |
| rhs = build2 (PLUS_EXPR, TREE_TYPE (inc), getter_expr, inc); |
| else |
| rhs = build2 (MINUS_EXPR, TREE_TYPE (inc), getter_expr, inc); |
| /* tmp = rhs; */ |
| comma_exp = build_modify_expr (temp, NOP_EXPR, rhs); |
| |
| /* Now build rhs of 'prop = tmp' statement. */ |
| if (code == PREINCREMENT_EXPR || code == PREDECREMENT_EXPR) |
| rhs = temp; |
| else if (code == POSTINCREMENT_EXPR) |
| rhs = build2 (PLUS_EXPR, TREE_TYPE (inc), temp, inc); |
| else |
| rhs = build2 (MINUS_EXPR, TREE_TYPE (inc), temp, inc); |
| comma_exp = build_compound_expr (comma_exp, |
| objc_setter_func_call (receiver, prop_ident, rhs)); |
| /* Shut-off C++ warning on comma-expr with no side-effect. */ |
| TREE_NO_WARNING (temp) = 1; |
| return build_compound_expr (comma_exp, temp); |
| } |
| |
| /* This is objc2 version of objc_build_incr_decr_setter_call. */ |
| |
| static tree |
| objc_v2_build_incr_decl_setter_call (enum tree_code code, tree lhs, tree inc) |
| { |
| tree expr = lhs; |
| |
| if (expr && TREE_CODE (expr) == CALL_EXPR |
| && CALL_EXPR_OBJC_PROPERTY_GETTER (expr)) |
| { |
| tree chain; |
| tree arg = TREE_OPERAND (expr, 1); |
| tree selector_reference = TREE_VALUE (TREE_CHAIN (arg)); |
| gcc_assert (TREE_CODE (selector_reference) == ADDR_EXPR); |
| selector_reference = TREE_OPERAND (selector_reference, 0); |
| gcc_assert (TREE_CODE (selector_reference) == VAR_DECL); |
| for (chain = message_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| if (TREE_PURPOSE (chain) == selector_reference) |
| return objc_build_compound_incr_decr_setter_call ( |
| TREE_VALUE (arg), TREE_VALUE (TREE_CHAIN (chain)), |
| code, lhs, inc); |
| } |
| } |
| return NULL_TREE; |
| } |
| |
| |
| /* |
| global main routine to build property's version of pre/post incr/decr |
| expression tree. |
| |
| CODE is one of POSTINCREMENT_EXPR (prop++), POSTDECREMENT_EXPR (prop--), |
| PREINCREMENT_EXPR (++prop), PREDECREMENT_EXPR (--prop). |
| LHS is the property in the form of a property getter call. |
| INC is the amount property is incrmented or decremented by. |
| */ |
| |
| tree |
| objc_build_incr_decr_setter_call (enum tree_code code, tree lhs, tree inc) |
| { |
| tree expr; |
| |
| if (flag_objc_abi == 2) |
| return objc_v2_build_incr_decl_setter_call (code, lhs, inc); |
| |
| expr = lhs; |
| if (expr && TREE_CODE (expr) == CALL_EXPR |
| && CALL_EXPR_OBJC_PROPERTY_GETTER (expr)) |
| { |
| tree chain; |
| tree arg = TREE_OPERAND (expr, 1); |
| tree selector_reference = TREE_VALUE (TREE_CHAIN (arg)); |
| gcc_assert (selector_reference); |
| for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain)) |
| { |
| if (TREE_PURPOSE (chain) == selector_reference) |
| return objc_build_compound_incr_decr_setter_call |
| (TREE_VALUE (arg), TREE_VALUE (chain), code, lhs, inc); |
| } |
| } |
| return NULL_TREE; |
| |
| } |
| |
| /* APPLE LOCAL begin radar 5040740 */ |
| /* This routine looks up the PROPERTY in the INTERFACE_TYPE class or one of its |
| super classes. */ |
| static tree |
| lookup_nested_property (tree interface_type, tree property) |
| { |
| tree inter = interface_type; |
| while (inter) |
| { |
| tree x; |
| if ((x = lookup_property_in_list (inter, property))) |
| return x; |
| /* Failing that, climb up the inheritance hierarchy. */ |
| inter = lookup_interface (CLASS_SUPER_NAME (inter)); |
| } |
| return NULL_TREE; |
| } |
| |
| /* This routine looks up METHOD_NAME in the INTERFACE_TYPE class or one of its |
| super class. */ |
| static tree |
| lookup_nested_method (tree interface_type, tree method_name) |
| { |
| tree inter = interface_type; |
| while (inter) |
| { |
| tree x; |
| if ((x = lookup_method (CLASS_NST_METHODS (inter), method_name))) |
| return x; |
| /* Failing that, climb up the inheritance hierarchy. */ |
| inter = lookup_interface (CLASS_SUPER_NAME (inter)); |
| } |
| return NULL_TREE; |
| } |
| |
| /* APPLE LOCAL end radar 5040740 */ |
| |
| /* This routine declares a new property implementation. Triggered by a @synthesize or |
| @dynamic declaration. */ |
| void objc_declare_property_impl (int impl_code, tree tree_list) |
| { |
| tree chain, interface, class; |
| if (tree_list == error_mark_node |
| || TREE_PURPOSE (tree_list) == error_mark_node |
| || TREE_VALUE (tree_list) == error_mark_node) |
| return; |
| /* Find the @interface for this @implementation. */ |
| gcc_assert (objc_implementation_context); |
| interface = lookup_interface (CLASS_NAME (objc_implementation_context)); |
| if (!interface) |
| { |
| error ("%s property may not be specified in implementation without an interface", |
| impl_code == 1 ? "synthesize" : "dynamic"); |
| return; |
| } |
| class = interface; |
| if (TREE_CODE (objc_implementation_context) == CATEGORY_IMPLEMENTATION_TYPE) |
| { |
| interface = lookup_category (interface, |
| CLASS_SUPER_NAME (objc_implementation_context)); |
| if (!interface) |
| { |
| error ("%s property may not be specified in category without an interface", |
| impl_code == 1 ? "synthesize" : "dynamic"); |
| return; |
| } |
| } |
| |
| if (impl_code == 1 || impl_code == 2) |
| { |
| for (chain = tree_list; chain; chain = TREE_CHAIN (chain)) |
| { |
| tree property_name = TREE_VALUE (chain); |
| tree x; |
| if (!property_name) |
| continue; |
| /* APPLE LOCAL begin radar 5040740 */ |
| /* Look up this property in the @interface declaration or in its superclass(s). */ |
| x = lookup_nested_property (interface, property_name); |
| /* APPLE LOCAL end radar 5040740 */ |
| if (!x) |
| error ("no declaration of property %qs found in the interface", |
| IDENTIFIER_POINTER (property_name)); |
| else |
| { |
| tree property_decl = copy_node (x); |
| |
| if (impl_code == 2) /* @dynamic ... */ |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; |
| else |
| { |
| /* @synthesize ... */ |
| tree ivar_decl; |
| tree ivar_name = TREE_PURPOSE (chain); |
| /* If 'ivar' unspecified, then an instance variable with same name as |
| property name must be used. */ |
| if (!ivar_name) |
| ivar_name = property_name; |
| ivar_decl = nested_ivar_lookup (class, ivar_name); |
| if (ivar_decl) |
| { |
| /* Check for semnatic correctness of the existing ivar. */ |
| if (comptypes (TREE_TYPE (ivar_decl), TREE_TYPE (property_decl)) != 1 |
| && !objc_compare_types (TREE_TYPE (property_decl), TREE_TYPE (ivar_decl), -5, NULL_TREE)) |
| { |
| error ("type of property %qs does not match type of ivar %qs", |
| IDENTIFIER_POINTER (property_name), IDENTIFIER_POINTER (ivar_name)); |
| PROPERTY_DYNAMIC (property_decl) = boolean_true_node; /* recover */ |
| } |
| if (flag_objc_gc) |
| { |
| int strong = objc_is_gcable_type (TREE_TYPE (property_decl)); |
| if (strong) |
| { |
| int gc_able = objc_is_gcable_type (TREE_TYPE (ivar_decl)); |
| if (strong != gc_able) |
| { |
| if (strong == -1) |
| error ("existing ivar %qs for the '__weak' property %qs must be __weak", |
| IDENTIFIER_POINTER (ivar_name), |
| IDENTIFIER_POINTER (property_name)); |
| else /* strong == 1 */ |
| error ("existing ivar %qs for a '__strong' property %qs must be garbage collectable", |
| IDENTIFIER_POINTER (ivar_name), |
| IDENTIFIER_POINTER (property_name)); |
| } |
| } |
| } |
| } |
| |
| PROPERTY_IVAR_NAME (property_decl) = ivar_name; |
| } |
| /* Add the property to the list of properties for current implementation. */ |
| TREE_CHAIN (property_decl) = IMPL_PROPERTY_DECL (objc_implementation_context); |
| IMPL_PROPERTY_DECL (objc_implementation_context) = property_decl; |
| } |
| } |
| } |
| else |
| gcc_assert (false); |
| } |
| /* APPLE LOCAL end C* language */ |
| |
| /* APPLE LOCAL begin radar 4985544 */ |
| /* This routine checks that FORMAT_NUM'th argument ARGUMENT has the 'NSString *' type. */ |
| |
| bool |
| objc_check_format_nsstring (tree argument, |
| unsigned HOST_WIDE_INT format_num, |
| bool *no_add_attrs) |
| { |
| unsigned HOST_WIDE_INT i; |
| bool ok = true; |
| |
| for (i = 1; i != format_num; i++) |
| { |
| if (argument == 0) |
| break; |
| argument = TREE_CHAIN (argument); |
| } |
| |
| if (!argument || TREE_CODE (TREE_VALUE (argument)) != POINTER_TYPE) |
| ok = false; |
| else |
| { |
| tree NSString_decl = objc_is_class_name (get_identifier ("NSString")); |
| if (!NSString_decl) |
| ok = false; |
| else |
| { |
| tree NSString_type = objc_get_protocol_qualified_type (NSString_decl, NULL_TREE); |
| if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (argument))) != NSString_type) |
| ok = false; |
| } |
| } |
| |
| if (!ok) |
| { |
| error ("format NSString argument not an 'NSString *' type"); |
| *no_add_attrs = true; |
| } |
| return ok; |
| } |
| /* APPLE LOCAL end radar 4985544 */ |
| #include "gt-objc-objc-act.h" |