| //===--- ParseObjC.cpp - Objective C Parsing ------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Objective-C portions of the Parser interface. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Parse/ParseDiagnostic.h" |
| #include "clang/Parse/Parser.h" |
| #include "RAIIObjectsForParser.h" |
| #include "clang/Sema/DeclSpec.h" |
| #include "clang/Sema/PrettyDeclStackTrace.h" |
| #include "clang/Sema/Scope.h" |
| #include "llvm/ADT/SmallVector.h" |
| using namespace clang; |
| |
| |
| /// ParseObjCAtDirectives - Handle parts of the external-declaration production: |
| /// external-declaration: [C99 6.9] |
| /// [OBJC] objc-class-definition |
| /// [OBJC] objc-class-declaration |
| /// [OBJC] objc-alias-declaration |
| /// [OBJC] objc-protocol-definition |
| /// [OBJC] objc-method-definition |
| /// [OBJC] '@' 'end' |
| Decl *Parser::ParseObjCAtDirectives() { |
| SourceLocation AtLoc = ConsumeToken(); // the "@" |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCAtDirective(getCurScope(), ObjCImpDecl, false); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| switch (Tok.getObjCKeywordID()) { |
| case tok::objc_class: |
| return ParseObjCAtClassDeclaration(AtLoc); |
| case tok::objc_interface: { |
| ParsedAttributes attrs; |
| return ParseObjCAtInterfaceDeclaration(AtLoc, attrs); |
| } |
| case tok::objc_protocol: { |
| ParsedAttributes attrs; |
| return ParseObjCAtProtocolDeclaration(AtLoc, attrs); |
| } |
| case tok::objc_implementation: |
| return ParseObjCAtImplementationDeclaration(AtLoc); |
| case tok::objc_end: |
| return ParseObjCAtEndDeclaration(AtLoc); |
| case tok::objc_compatibility_alias: |
| return ParseObjCAtAliasDeclaration(AtLoc); |
| case tok::objc_synthesize: |
| return ParseObjCPropertySynthesize(AtLoc); |
| case tok::objc_dynamic: |
| return ParseObjCPropertyDynamic(AtLoc); |
| default: |
| Diag(AtLoc, diag::err_unexpected_at); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| } |
| |
| /// |
| /// objc-class-declaration: |
| /// '@' 'class' identifier-list ';' |
| /// |
| Decl *Parser::ParseObjCAtClassDeclaration(SourceLocation atLoc) { |
| ConsumeToken(); // the identifier "class" |
| llvm::SmallVector<IdentifierInfo *, 8> ClassNames; |
| llvm::SmallVector<SourceLocation, 8> ClassLocs; |
| |
| |
| while (1) { |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| ClassNames.push_back(Tok.getIdentifierInfo()); |
| ClassLocs.push_back(Tok.getLocation()); |
| ConsumeToken(); |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| |
| ConsumeToken(); |
| } |
| |
| // Consume the ';'. |
| if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@class")) |
| return 0; |
| |
| return Actions.ActOnForwardClassDeclaration(atLoc, ClassNames.data(), |
| ClassLocs.data(), |
| ClassNames.size()); |
| } |
| |
| /// |
| /// objc-interface: |
| /// objc-class-interface-attributes[opt] objc-class-interface |
| /// objc-category-interface |
| /// |
| /// objc-class-interface: |
| /// '@' 'interface' identifier objc-superclass[opt] |
| /// objc-protocol-refs[opt] |
| /// objc-class-instance-variables[opt] |
| /// objc-interface-decl-list |
| /// @end |
| /// |
| /// objc-category-interface: |
| /// '@' 'interface' identifier '(' identifier[opt] ')' |
| /// objc-protocol-refs[opt] |
| /// objc-interface-decl-list |
| /// @end |
| /// |
| /// objc-superclass: |
| /// ':' identifier |
| /// |
| /// objc-class-interface-attributes: |
| /// __attribute__((visibility("default"))) |
| /// __attribute__((visibility("hidden"))) |
| /// __attribute__((deprecated)) |
| /// __attribute__((unavailable)) |
| /// __attribute__((objc_exception)) - used by NSException on 64-bit |
| /// |
| Decl *Parser::ParseObjCAtInterfaceDeclaration(SourceLocation atLoc, |
| ParsedAttributes &attrs) { |
| assert(Tok.isObjCAtKeyword(tok::objc_interface) && |
| "ParseObjCAtInterfaceDeclaration(): Expected @interface"); |
| ConsumeToken(); // the "interface" identifier |
| |
| // Code completion after '@interface'. |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCInterfaceDecl(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing class or category name. |
| return 0; |
| } |
| |
| // We have a class or category name - consume it. |
| IdentifierInfo *nameId = Tok.getIdentifierInfo(); |
| SourceLocation nameLoc = ConsumeToken(); |
| if (Tok.is(tok::l_paren) && |
| !isKnownToBeTypeSpecifier(GetLookAheadToken(1))) { // we have a category. |
| // TODO(dgregor): Use the return value from the next line to provide better |
| // recovery. |
| ConsumeParen(); |
| SourceLocation categoryLoc, rparenLoc; |
| IdentifierInfo *categoryId = 0; |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCInterfaceCategory(getCurScope(), nameId, nameLoc); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| // For ObjC2, the category name is optional (not an error). |
| if (Tok.is(tok::identifier)) { |
| categoryId = Tok.getIdentifierInfo(); |
| categoryLoc = ConsumeToken(); |
| } |
| else if (!getLang().ObjC2) { |
| Diag(Tok, diag::err_expected_ident); // missing category name. |
| return 0; |
| } |
| if (Tok.isNot(tok::r_paren)) { |
| Diag(Tok, diag::err_expected_rparen); |
| SkipUntil(tok::r_paren, false); // don't stop at ';' |
| return 0; |
| } |
| rparenLoc = ConsumeParen(); |
| // Next, we need to check for any protocol references. |
| SourceLocation LAngleLoc, EndProtoLoc; |
| llvm::SmallVector<Decl *, 8> ProtocolRefs; |
| llvm::SmallVector<SourceLocation, 8> ProtocolLocs; |
| if (Tok.is(tok::less) && |
| ParseObjCProtocolReferences(ProtocolRefs, ProtocolLocs, true, |
| LAngleLoc, EndProtoLoc)) |
| return 0; |
| |
| if (!attrs.empty()) // categories don't support attributes. |
| Diag(Tok, diag::err_objc_no_attributes_on_category); |
| |
| Decl *CategoryType = |
| Actions.ActOnStartCategoryInterface(atLoc, |
| nameId, nameLoc, |
| categoryId, categoryLoc, |
| ProtocolRefs.data(), |
| ProtocolRefs.size(), |
| ProtocolLocs.data(), |
| EndProtoLoc); |
| if (Tok.is(tok::l_brace)) |
| ParseObjCClassInstanceVariables(CategoryType, tok::objc_private, |
| atLoc); |
| |
| ParseObjCInterfaceDeclList(CategoryType, tok::objc_not_keyword); |
| return CategoryType; |
| } |
| // Parse a class interface. |
| IdentifierInfo *superClassId = 0; |
| SourceLocation superClassLoc; |
| |
| if (Tok.is(tok::colon)) { // a super class is specified. |
| ConsumeToken(); |
| |
| // Code completion of superclass names. |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCSuperclass(getCurScope(), nameId, nameLoc); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing super class name. |
| return 0; |
| } |
| superClassId = Tok.getIdentifierInfo(); |
| superClassLoc = ConsumeToken(); |
| } |
| // Next, we need to check for any protocol references. |
| llvm::SmallVector<Decl *, 8> ProtocolRefs; |
| llvm::SmallVector<SourceLocation, 8> ProtocolLocs; |
| SourceLocation LAngleLoc, EndProtoLoc; |
| if (Tok.is(tok::less) && |
| ParseObjCProtocolReferences(ProtocolRefs, ProtocolLocs, true, |
| LAngleLoc, EndProtoLoc)) |
| return 0; |
| |
| Decl *ClsType = |
| Actions.ActOnStartClassInterface(atLoc, nameId, nameLoc, |
| superClassId, superClassLoc, |
| ProtocolRefs.data(), ProtocolRefs.size(), |
| ProtocolLocs.data(), |
| EndProtoLoc, attrs.getList()); |
| |
| if (Tok.is(tok::l_brace)) |
| ParseObjCClassInstanceVariables(ClsType, tok::objc_protected, atLoc); |
| |
| ParseObjCInterfaceDeclList(ClsType, tok::objc_interface); |
| return ClsType; |
| } |
| |
| /// The Objective-C property callback. This should be defined where |
| /// it's used, but instead it's been lifted to here to support VS2005. |
| struct Parser::ObjCPropertyCallback : FieldCallback { |
| Parser &P; |
| Decl *IDecl; |
| llvm::SmallVectorImpl<Decl *> &Props; |
| ObjCDeclSpec &OCDS; |
| SourceLocation AtLoc; |
| tok::ObjCKeywordKind MethodImplKind; |
| |
| ObjCPropertyCallback(Parser &P, Decl *IDecl, |
| llvm::SmallVectorImpl<Decl *> &Props, |
| ObjCDeclSpec &OCDS, SourceLocation AtLoc, |
| tok::ObjCKeywordKind MethodImplKind) : |
| P(P), IDecl(IDecl), Props(Props), OCDS(OCDS), AtLoc(AtLoc), |
| MethodImplKind(MethodImplKind) { |
| } |
| |
| Decl *invoke(FieldDeclarator &FD) { |
| if (FD.D.getIdentifier() == 0) { |
| P.Diag(AtLoc, diag::err_objc_property_requires_field_name) |
| << FD.D.getSourceRange(); |
| return 0; |
| } |
| if (FD.BitfieldSize) { |
| P.Diag(AtLoc, diag::err_objc_property_bitfield) |
| << FD.D.getSourceRange(); |
| return 0; |
| } |
| |
| // Install the property declarator into interfaceDecl. |
| IdentifierInfo *SelName = |
| OCDS.getGetterName() ? OCDS.getGetterName() : FD.D.getIdentifier(); |
| |
| Selector GetterSel = |
| P.PP.getSelectorTable().getNullarySelector(SelName); |
| IdentifierInfo *SetterName = OCDS.getSetterName(); |
| Selector SetterSel; |
| if (SetterName) |
| SetterSel = P.PP.getSelectorTable().getSelector(1, &SetterName); |
| else |
| SetterSel = SelectorTable::constructSetterName(P.PP.getIdentifierTable(), |
| P.PP.getSelectorTable(), |
| FD.D.getIdentifier()); |
| bool isOverridingProperty = false; |
| Decl *Property = |
| P.Actions.ActOnProperty(P.getCurScope(), AtLoc, FD, OCDS, |
| GetterSel, SetterSel, IDecl, |
| &isOverridingProperty, |
| MethodImplKind); |
| if (!isOverridingProperty) |
| Props.push_back(Property); |
| |
| return Property; |
| } |
| }; |
| |
| /// objc-interface-decl-list: |
| /// empty |
| /// objc-interface-decl-list objc-property-decl [OBJC2] |
| /// objc-interface-decl-list objc-method-requirement [OBJC2] |
| /// objc-interface-decl-list objc-method-proto ';' |
| /// objc-interface-decl-list declaration |
| /// objc-interface-decl-list ';' |
| /// |
| /// objc-method-requirement: [OBJC2] |
| /// @required |
| /// @optional |
| /// |
| void Parser::ParseObjCInterfaceDeclList(Decl *interfaceDecl, |
| tok::ObjCKeywordKind contextKey) { |
| llvm::SmallVector<Decl *, 32> allMethods; |
| llvm::SmallVector<Decl *, 16> allProperties; |
| llvm::SmallVector<DeclGroupPtrTy, 8> allTUVariables; |
| tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword; |
| |
| SourceRange AtEnd; |
| |
| while (1) { |
| // If this is a method prototype, parse it. |
| if (Tok.is(tok::minus) || Tok.is(tok::plus)) { |
| Decl *methodPrototype = |
| ParseObjCMethodPrototype(interfaceDecl, MethodImplKind); |
| allMethods.push_back(methodPrototype); |
| // Consume the ';' here, since ParseObjCMethodPrototype() is re-used for |
| // method definitions. |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after_method_proto, |
| "", tok::semi); |
| continue; |
| } |
| if (Tok.is(tok::l_paren)) { |
| Diag(Tok, diag::err_expected_minus_or_plus); |
| ParseObjCMethodDecl(Tok.getLocation(), |
| tok::minus, |
| interfaceDecl, |
| MethodImplKind); |
| continue; |
| } |
| // Ignore excess semicolons. |
| if (Tok.is(tok::semi)) { |
| ConsumeToken(); |
| continue; |
| } |
| |
| // If we got to the end of the file, exit the loop. |
| if (Tok.is(tok::eof)) |
| break; |
| |
| // Code completion within an Objective-C interface. |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteOrdinaryName(getCurScope(), |
| ObjCImpDecl? Sema::PCC_ObjCImplementation |
| : Sema::PCC_ObjCInterface); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| // If we don't have an @ directive, parse it as a function definition. |
| if (Tok.isNot(tok::at)) { |
| // The code below does not consume '}'s because it is afraid of eating the |
| // end of a namespace. Because of the way this code is structured, an |
| // erroneous r_brace would cause an infinite loop if not handled here. |
| if (Tok.is(tok::r_brace)) |
| break; |
| |
| // FIXME: as the name implies, this rule allows function definitions. |
| // We could pass a flag or check for functions during semantic analysis. |
| ParsedAttributes attrs; |
| allTUVariables.push_back(ParseDeclarationOrFunctionDefinition(attrs)); |
| continue; |
| } |
| |
| // Otherwise, we have an @ directive, eat the @. |
| SourceLocation AtLoc = ConsumeToken(); // the "@" |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCAtDirective(getCurScope(), ObjCImpDecl, true); |
| ConsumeCodeCompletionToken(); |
| break; |
| } |
| |
| tok::ObjCKeywordKind DirectiveKind = Tok.getObjCKeywordID(); |
| |
| if (DirectiveKind == tok::objc_end) { // @end -> terminate list |
| AtEnd.setBegin(AtLoc); |
| AtEnd.setEnd(Tok.getLocation()); |
| break; |
| } else if (DirectiveKind == tok::objc_not_keyword) { |
| Diag(Tok, diag::err_objc_unknown_at); |
| SkipUntil(tok::semi); |
| continue; |
| } |
| |
| // Eat the identifier. |
| ConsumeToken(); |
| |
| switch (DirectiveKind) { |
| default: |
| // FIXME: If someone forgets an @end on a protocol, this loop will |
| // continue to eat up tons of stuff and spew lots of nonsense errors. It |
| // would probably be better to bail out if we saw an @class or @interface |
| // or something like that. |
| Diag(AtLoc, diag::err_objc_illegal_interface_qual); |
| // Skip until we see an '@' or '}' or ';'. |
| SkipUntil(tok::r_brace, tok::at); |
| break; |
| |
| case tok::objc_implementation: |
| case tok::objc_interface: |
| Diag(Tok, diag::err_objc_missing_end); |
| ConsumeToken(); |
| break; |
| |
| case tok::objc_required: |
| case tok::objc_optional: |
| // This is only valid on protocols. |
| // FIXME: Should this check for ObjC2 being enabled? |
| if (contextKey != tok::objc_protocol) |
| Diag(AtLoc, diag::err_objc_directive_only_in_protocol); |
| else |
| MethodImplKind = DirectiveKind; |
| break; |
| |
| case tok::objc_property: |
| if (!getLang().ObjC2) |
| Diag(AtLoc, diag::err_objc_properties_require_objc2); |
| |
| ObjCDeclSpec OCDS; |
| // Parse property attribute list, if any. |
| if (Tok.is(tok::l_paren)) |
| ParseObjCPropertyAttribute(OCDS, interfaceDecl); |
| |
| ObjCPropertyCallback Callback(*this, interfaceDecl, allProperties, |
| OCDS, AtLoc, MethodImplKind); |
| |
| // Parse all the comma separated declarators. |
| DeclSpec DS; |
| ParseStructDeclaration(DS, Callback); |
| |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list, "", |
| tok::at); |
| break; |
| } |
| } |
| |
| // We break out of the big loop in two cases: when we see @end or when we see |
| // EOF. In the former case, eat the @end. In the later case, emit an error. |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCAtDirective(getCurScope(), ObjCImpDecl, true); |
| ConsumeCodeCompletionToken(); |
| } else if (Tok.isObjCAtKeyword(tok::objc_end)) |
| ConsumeToken(); // the "end" identifier |
| else |
| Diag(Tok, diag::err_objc_missing_end); |
| |
| // Insert collected methods declarations into the @interface object. |
| // This passes in an invalid SourceLocation for AtEndLoc when EOF is hit. |
| Actions.ActOnAtEnd(getCurScope(), AtEnd, interfaceDecl, |
| allMethods.data(), allMethods.size(), |
| allProperties.data(), allProperties.size(), |
| allTUVariables.data(), allTUVariables.size()); |
| } |
| |
| /// Parse property attribute declarations. |
| /// |
| /// property-attr-decl: '(' property-attrlist ')' |
| /// property-attrlist: |
| /// property-attribute |
| /// property-attrlist ',' property-attribute |
| /// property-attribute: |
| /// getter '=' identifier |
| /// setter '=' identifier ':' |
| /// readonly |
| /// readwrite |
| /// assign |
| /// retain |
| /// copy |
| /// nonatomic |
| /// |
| void Parser::ParseObjCPropertyAttribute(ObjCDeclSpec &DS, Decl *ClassDecl) { |
| assert(Tok.getKind() == tok::l_paren); |
| SourceLocation LHSLoc = ConsumeParen(); // consume '(' |
| |
| while (1) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCPropertyFlags(getCurScope(), DS); |
| ConsumeCodeCompletionToken(); |
| } |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| |
| // If this is not an identifier at all, bail out early. |
| if (II == 0) { |
| MatchRHSPunctuation(tok::r_paren, LHSLoc); |
| return; |
| } |
| |
| SourceLocation AttrName = ConsumeToken(); // consume last attribute name |
| |
| if (II->isStr("readonly")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_readonly); |
| else if (II->isStr("assign")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_assign); |
| else if (II->isStr("readwrite")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_readwrite); |
| else if (II->isStr("retain")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_retain); |
| else if (II->isStr("copy")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_copy); |
| else if (II->isStr("nonatomic")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_nonatomic); |
| else if (II->isStr("atomic")) |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_atomic); |
| else if (II->isStr("getter") || II->isStr("setter")) { |
| bool IsSetter = II->getNameStart()[0] == 's'; |
| |
| // getter/setter require extra treatment. |
| unsigned DiagID = IsSetter ? diag::err_objc_expected_equal_for_setter : |
| diag::err_objc_expected_equal_for_getter; |
| |
| if (ExpectAndConsume(tok::equal, DiagID, "", tok::r_paren)) |
| return; |
| |
| if (Tok.is(tok::code_completion)) { |
| if (IsSetter) |
| Actions.CodeCompleteObjCPropertySetter(getCurScope(), ClassDecl); |
| else |
| Actions.CodeCompleteObjCPropertyGetter(getCurScope(), ClassDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| |
| SourceLocation SelLoc; |
| IdentifierInfo *SelIdent = ParseObjCSelectorPiece(SelLoc); |
| |
| if (!SelIdent) { |
| Diag(Tok, diag::err_objc_expected_selector_for_getter_setter) |
| << IsSetter; |
| SkipUntil(tok::r_paren); |
| return; |
| } |
| |
| if (IsSetter) { |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_setter); |
| DS.setSetterName(SelIdent); |
| |
| if (ExpectAndConsume(tok::colon, |
| diag::err_expected_colon_after_setter_name, "", |
| tok::r_paren)) |
| return; |
| } else { |
| DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_getter); |
| DS.setGetterName(SelIdent); |
| } |
| } else { |
| Diag(AttrName, diag::err_objc_expected_property_attr) << II; |
| SkipUntil(tok::r_paren); |
| return; |
| } |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| |
| ConsumeToken(); |
| } |
| |
| MatchRHSPunctuation(tok::r_paren, LHSLoc); |
| } |
| |
| /// objc-method-proto: |
| /// objc-instance-method objc-method-decl objc-method-attributes[opt] |
| /// objc-class-method objc-method-decl objc-method-attributes[opt] |
| /// |
| /// objc-instance-method: '-' |
| /// objc-class-method: '+' |
| /// |
| /// objc-method-attributes: [OBJC2] |
| /// __attribute__((deprecated)) |
| /// |
| Decl *Parser::ParseObjCMethodPrototype(Decl *IDecl, |
| tok::ObjCKeywordKind MethodImplKind) { |
| assert((Tok.is(tok::minus) || Tok.is(tok::plus)) && "expected +/-"); |
| |
| tok::TokenKind methodType = Tok.getKind(); |
| SourceLocation mLoc = ConsumeToken(); |
| Decl *MDecl = ParseObjCMethodDecl(mLoc, methodType, IDecl,MethodImplKind); |
| // Since this rule is used for both method declarations and definitions, |
| // the caller is (optionally) responsible for consuming the ';'. |
| return MDecl; |
| } |
| |
| /// objc-selector: |
| /// identifier |
| /// one of |
| /// enum struct union if else while do for switch case default |
| /// break continue return goto asm sizeof typeof __alignof |
| /// unsigned long const short volatile signed restrict _Complex |
| /// in out inout bycopy byref oneway int char float double void _Bool |
| /// |
| IdentifierInfo *Parser::ParseObjCSelectorPiece(SourceLocation &SelectorLoc) { |
| |
| switch (Tok.getKind()) { |
| default: |
| return 0; |
| case tok::ampamp: |
| case tok::ampequal: |
| case tok::amp: |
| case tok::pipe: |
| case tok::tilde: |
| case tok::exclaim: |
| case tok::exclaimequal: |
| case tok::pipepipe: |
| case tok::pipeequal: |
| case tok::caret: |
| case tok::caretequal: { |
| std::string ThisTok(PP.getSpelling(Tok)); |
| if (isalpha(ThisTok[0])) { |
| IdentifierInfo *II = &PP.getIdentifierTable().get(ThisTok.data()); |
| Tok.setKind(tok::identifier); |
| SelectorLoc = ConsumeToken(); |
| return II; |
| } |
| return 0; |
| } |
| |
| case tok::identifier: |
| case tok::kw_asm: |
| case tok::kw_auto: |
| case tok::kw_bool: |
| case tok::kw_break: |
| case tok::kw_case: |
| case tok::kw_catch: |
| case tok::kw_char: |
| case tok::kw_class: |
| case tok::kw_const: |
| case tok::kw_const_cast: |
| case tok::kw_continue: |
| case tok::kw_default: |
| case tok::kw_delete: |
| case tok::kw_do: |
| case tok::kw_double: |
| case tok::kw_dynamic_cast: |
| case tok::kw_else: |
| case tok::kw_enum: |
| case tok::kw_explicit: |
| case tok::kw_export: |
| case tok::kw_extern: |
| case tok::kw_false: |
| case tok::kw_float: |
| case tok::kw_for: |
| case tok::kw_friend: |
| case tok::kw_goto: |
| case tok::kw_if: |
| case tok::kw_inline: |
| case tok::kw_int: |
| case tok::kw_long: |
| case tok::kw_mutable: |
| case tok::kw_namespace: |
| case tok::kw_new: |
| case tok::kw_operator: |
| case tok::kw_private: |
| case tok::kw_protected: |
| case tok::kw_public: |
| case tok::kw_register: |
| case tok::kw_reinterpret_cast: |
| case tok::kw_restrict: |
| case tok::kw_return: |
| case tok::kw_short: |
| case tok::kw_signed: |
| case tok::kw_sizeof: |
| case tok::kw_static: |
| case tok::kw_static_cast: |
| case tok::kw_struct: |
| case tok::kw_switch: |
| case tok::kw_template: |
| case tok::kw_this: |
| case tok::kw_throw: |
| case tok::kw_true: |
| case tok::kw_try: |
| case tok::kw_typedef: |
| case tok::kw_typeid: |
| case tok::kw_typename: |
| case tok::kw_typeof: |
| case tok::kw_union: |
| case tok::kw_unsigned: |
| case tok::kw_using: |
| case tok::kw_virtual: |
| case tok::kw_void: |
| case tok::kw_volatile: |
| case tok::kw_wchar_t: |
| case tok::kw_while: |
| case tok::kw__Bool: |
| case tok::kw__Complex: |
| case tok::kw___alignof: |
| IdentifierInfo *II = Tok.getIdentifierInfo(); |
| SelectorLoc = ConsumeToken(); |
| return II; |
| } |
| } |
| |
| /// objc-for-collection-in: 'in' |
| /// |
| bool Parser::isTokIdentifier_in() const { |
| // FIXME: May have to do additional look-ahead to only allow for |
| // valid tokens following an 'in'; such as an identifier, unary operators, |
| // '[' etc. |
| return (getLang().ObjC2 && Tok.is(tok::identifier) && |
| Tok.getIdentifierInfo() == ObjCTypeQuals[objc_in]); |
| } |
| |
| /// ParseObjCTypeQualifierList - This routine parses the objective-c's type |
| /// qualifier list and builds their bitmask representation in the input |
| /// argument. |
| /// |
| /// objc-type-qualifiers: |
| /// objc-type-qualifier |
| /// objc-type-qualifiers objc-type-qualifier |
| /// |
| void Parser::ParseObjCTypeQualifierList(ObjCDeclSpec &DS, bool IsParameter) { |
| while (1) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCPassingType(getCurScope(), DS, IsParameter); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) |
| return; |
| |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| for (unsigned i = 0; i != objc_NumQuals; ++i) { |
| if (II != ObjCTypeQuals[i]) |
| continue; |
| |
| ObjCDeclSpec::ObjCDeclQualifier Qual; |
| switch (i) { |
| default: assert(0 && "Unknown decl qualifier"); |
| case objc_in: Qual = ObjCDeclSpec::DQ_In; break; |
| case objc_out: Qual = ObjCDeclSpec::DQ_Out; break; |
| case objc_inout: Qual = ObjCDeclSpec::DQ_Inout; break; |
| case objc_oneway: Qual = ObjCDeclSpec::DQ_Oneway; break; |
| case objc_bycopy: Qual = ObjCDeclSpec::DQ_Bycopy; break; |
| case objc_byref: Qual = ObjCDeclSpec::DQ_Byref; break; |
| } |
| DS.setObjCDeclQualifier(Qual); |
| ConsumeToken(); |
| II = 0; |
| break; |
| } |
| |
| // If this wasn't a recognized qualifier, bail out. |
| if (II) return; |
| } |
| } |
| |
| /// objc-type-name: |
| /// '(' objc-type-qualifiers[opt] type-name ')' |
| /// '(' objc-type-qualifiers[opt] ')' |
| /// |
| ParsedType Parser::ParseObjCTypeName(ObjCDeclSpec &DS, bool IsParameter) { |
| assert(Tok.is(tok::l_paren) && "expected ("); |
| |
| SourceLocation LParenLoc = ConsumeParen(); |
| SourceLocation TypeStartLoc = Tok.getLocation(); |
| |
| // Parse type qualifiers, in, inout, etc. |
| ParseObjCTypeQualifierList(DS, IsParameter); |
| |
| ParsedType Ty; |
| if (isTypeSpecifierQualifier()) { |
| TypeResult TypeSpec = ParseTypeName(); |
| if (!TypeSpec.isInvalid()) |
| Ty = TypeSpec.get(); |
| } |
| |
| if (Tok.is(tok::r_paren)) |
| ConsumeParen(); |
| else if (Tok.getLocation() == TypeStartLoc) { |
| // If we didn't eat any tokens, then this isn't a type. |
| Diag(Tok, diag::err_expected_type); |
| SkipUntil(tok::r_paren); |
| } else { |
| // Otherwise, we found *something*, but didn't get a ')' in the right |
| // place. Emit an error then return what we have as the type. |
| MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| } |
| return Ty; |
| } |
| |
| /// objc-method-decl: |
| /// objc-selector |
| /// objc-keyword-selector objc-parmlist[opt] |
| /// objc-type-name objc-selector |
| /// objc-type-name objc-keyword-selector objc-parmlist[opt] |
| /// |
| /// objc-keyword-selector: |
| /// objc-keyword-decl |
| /// objc-keyword-selector objc-keyword-decl |
| /// |
| /// objc-keyword-decl: |
| /// objc-selector ':' objc-type-name objc-keyword-attributes[opt] identifier |
| /// objc-selector ':' objc-keyword-attributes[opt] identifier |
| /// ':' objc-type-name objc-keyword-attributes[opt] identifier |
| /// ':' objc-keyword-attributes[opt] identifier |
| /// |
| /// objc-parmlist: |
| /// objc-parms objc-ellipsis[opt] |
| /// |
| /// objc-parms: |
| /// objc-parms , parameter-declaration |
| /// |
| /// objc-ellipsis: |
| /// , ... |
| /// |
| /// objc-keyword-attributes: [OBJC2] |
| /// __attribute__((unused)) |
| /// |
| Decl *Parser::ParseObjCMethodDecl(SourceLocation mLoc, |
| tok::TokenKind mType, |
| Decl *IDecl, |
| tok::ObjCKeywordKind MethodImplKind) { |
| ParsingDeclRAIIObject PD(*this); |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCMethodDecl(getCurScope(), mType == tok::minus, |
| /*ReturnType=*/ ParsedType(), IDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| // Parse the return type if present. |
| ParsedType ReturnType; |
| ObjCDeclSpec DSRet; |
| if (Tok.is(tok::l_paren)) |
| ReturnType = ParseObjCTypeName(DSRet, false); |
| |
| // If attributes exist before the method, parse them. |
| ParsedAttributes attrs; |
| if (getLang().ObjC2) |
| MaybeParseGNUAttributes(attrs); |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCMethodDecl(getCurScope(), mType == tok::minus, |
| ReturnType, IDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| // Now parse the selector. |
| SourceLocation selLoc; |
| IdentifierInfo *SelIdent = ParseObjCSelectorPiece(selLoc); |
| |
| // An unnamed colon is valid. |
| if (!SelIdent && Tok.isNot(tok::colon)) { // missing selector name. |
| Diag(Tok, diag::err_expected_selector_for_method) |
| << SourceRange(mLoc, Tok.getLocation()); |
| // Skip until we get a ; or {}. |
| SkipUntil(tok::r_brace); |
| return 0; |
| } |
| |
| llvm::SmallVector<DeclaratorChunk::ParamInfo, 8> CParamInfo; |
| if (Tok.isNot(tok::colon)) { |
| // If attributes exist after the method, parse them. |
| if (getLang().ObjC2) |
| MaybeParseGNUAttributes(attrs); |
| |
| Selector Sel = PP.getSelectorTable().getNullarySelector(SelIdent); |
| Decl *Result |
| = Actions.ActOnMethodDeclaration(getCurScope(), mLoc, Tok.getLocation(), |
| mType, IDecl, DSRet, ReturnType, Sel, |
| 0, |
| CParamInfo.data(), CParamInfo.size(), |
| attrs.getList(), MethodImplKind); |
| PD.complete(Result); |
| return Result; |
| } |
| |
| llvm::SmallVector<IdentifierInfo *, 12> KeyIdents; |
| llvm::SmallVector<Sema::ObjCArgInfo, 12> ArgInfos; |
| ParseScope PrototypeScope(this, |
| Scope::FunctionPrototypeScope|Scope::DeclScope); |
| |
| while (1) { |
| Sema::ObjCArgInfo ArgInfo; |
| |
| // Each iteration parses a single keyword argument. |
| if (Tok.isNot(tok::colon)) { |
| Diag(Tok, diag::err_expected_colon); |
| break; |
| } |
| ConsumeToken(); // Eat the ':'. |
| |
| ArgInfo.Type = ParsedType(); |
| if (Tok.is(tok::l_paren)) // Parse the argument type if present. |
| ArgInfo.Type = ParseObjCTypeName(ArgInfo.DeclSpec, true); |
| |
| // If attributes exist before the argument name, parse them. |
| ArgInfo.ArgAttrs = 0; |
| if (getLang().ObjC2) { |
| ParsedAttributes attrs; |
| MaybeParseGNUAttributes(attrs); |
| ArgInfo.ArgAttrs = attrs.getList(); |
| } |
| |
| // Code completion for the next piece of the selector. |
| if (Tok.is(tok::code_completion)) { |
| ConsumeCodeCompletionToken(); |
| KeyIdents.push_back(SelIdent); |
| Actions.CodeCompleteObjCMethodDeclSelector(getCurScope(), |
| mType == tok::minus, |
| /*AtParameterName=*/true, |
| ReturnType, |
| KeyIdents.data(), |
| KeyIdents.size()); |
| KeyIdents.pop_back(); |
| break; |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing argument name. |
| break; |
| } |
| |
| ArgInfo.Name = Tok.getIdentifierInfo(); |
| ArgInfo.NameLoc = Tok.getLocation(); |
| ConsumeToken(); // Eat the identifier. |
| |
| ArgInfos.push_back(ArgInfo); |
| KeyIdents.push_back(SelIdent); |
| |
| // Code completion for the next piece of the selector. |
| if (Tok.is(tok::code_completion)) { |
| ConsumeCodeCompletionToken(); |
| Actions.CodeCompleteObjCMethodDeclSelector(getCurScope(), |
| mType == tok::minus, |
| /*AtParameterName=*/false, |
| ReturnType, |
| KeyIdents.data(), |
| KeyIdents.size()); |
| break; |
| } |
| |
| // Check for another keyword selector. |
| SourceLocation Loc; |
| SelIdent = ParseObjCSelectorPiece(Loc); |
| if (!SelIdent && Tok.isNot(tok::colon)) |
| break; |
| // We have a selector or a colon, continue parsing. |
| } |
| |
| bool isVariadic = false; |
| |
| // Parse the (optional) parameter list. |
| while (Tok.is(tok::comma)) { |
| ConsumeToken(); |
| if (Tok.is(tok::ellipsis)) { |
| isVariadic = true; |
| ConsumeToken(); |
| break; |
| } |
| DeclSpec DS; |
| ParseDeclarationSpecifiers(DS); |
| // Parse the declarator. |
| Declarator ParmDecl(DS, Declarator::PrototypeContext); |
| ParseDeclarator(ParmDecl); |
| IdentifierInfo *ParmII = ParmDecl.getIdentifier(); |
| Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDecl); |
| CParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII, |
| ParmDecl.getIdentifierLoc(), |
| Param, |
| 0)); |
| |
| } |
| |
| // FIXME: Add support for optional parameter list... |
| // If attributes exist after the method, parse them. |
| if (getLang().ObjC2) |
| MaybeParseGNUAttributes(attrs); |
| |
| if (KeyIdents.size() == 0) { |
| // Leave prototype scope. |
| PrototypeScope.Exit(); |
| return 0; |
| } |
| |
| Selector Sel = PP.getSelectorTable().getSelector(KeyIdents.size(), |
| &KeyIdents[0]); |
| Decl *Result |
| = Actions.ActOnMethodDeclaration(getCurScope(), mLoc, Tok.getLocation(), |
| mType, IDecl, DSRet, ReturnType, Sel, |
| &ArgInfos[0], |
| CParamInfo.data(), CParamInfo.size(), |
| attrs.getList(), |
| MethodImplKind, isVariadic); |
| // Leave prototype scope. |
| PrototypeScope.Exit(); |
| |
| PD.complete(Result); |
| return Result; |
| } |
| |
| /// objc-protocol-refs: |
| /// '<' identifier-list '>' |
| /// |
| bool Parser:: |
| ParseObjCProtocolReferences(llvm::SmallVectorImpl<Decl *> &Protocols, |
| llvm::SmallVectorImpl<SourceLocation> &ProtocolLocs, |
| bool WarnOnDeclarations, |
| SourceLocation &LAngleLoc, SourceLocation &EndLoc) { |
| assert(Tok.is(tok::less) && "expected <"); |
| |
| LAngleLoc = ConsumeToken(); // the "<" |
| |
| llvm::SmallVector<IdentifierLocPair, 8> ProtocolIdents; |
| |
| while (1) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCProtocolReferences(ProtocolIdents.data(), |
| ProtocolIdents.size()); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::greater); |
| return true; |
| } |
| ProtocolIdents.push_back(std::make_pair(Tok.getIdentifierInfo(), |
| Tok.getLocation())); |
| ProtocolLocs.push_back(Tok.getLocation()); |
| ConsumeToken(); |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| ConsumeToken(); |
| } |
| |
| // Consume the '>'. |
| if (Tok.isNot(tok::greater)) { |
| Diag(Tok, diag::err_expected_greater); |
| return true; |
| } |
| |
| EndLoc = ConsumeAnyToken(); |
| |
| // Convert the list of protocols identifiers into a list of protocol decls. |
| Actions.FindProtocolDeclaration(WarnOnDeclarations, |
| &ProtocolIdents[0], ProtocolIdents.size(), |
| Protocols); |
| return false; |
| } |
| |
| /// \brief Parse the Objective-C protocol qualifiers that follow a typename |
| /// in a decl-specifier-seq, starting at the '<'. |
| bool Parser::ParseObjCProtocolQualifiers(DeclSpec &DS) { |
| assert(Tok.is(tok::less) && "Protocol qualifiers start with '<'"); |
| assert(getLang().ObjC1 && "Protocol qualifiers only exist in Objective-C"); |
| SourceLocation LAngleLoc, EndProtoLoc; |
| llvm::SmallVector<Decl *, 8> ProtocolDecl; |
| llvm::SmallVector<SourceLocation, 8> ProtocolLocs; |
| bool Result = ParseObjCProtocolReferences(ProtocolDecl, ProtocolLocs, false, |
| LAngleLoc, EndProtoLoc); |
| DS.setProtocolQualifiers(ProtocolDecl.data(), ProtocolDecl.size(), |
| ProtocolLocs.data(), LAngleLoc); |
| if (EndProtoLoc.isValid()) |
| DS.SetRangeEnd(EndProtoLoc); |
| return Result; |
| } |
| |
| |
| /// objc-class-instance-variables: |
| /// '{' objc-instance-variable-decl-list[opt] '}' |
| /// |
| /// objc-instance-variable-decl-list: |
| /// objc-visibility-spec |
| /// objc-instance-variable-decl ';' |
| /// ';' |
| /// objc-instance-variable-decl-list objc-visibility-spec |
| /// objc-instance-variable-decl-list objc-instance-variable-decl ';' |
| /// objc-instance-variable-decl-list ';' |
| /// |
| /// objc-visibility-spec: |
| /// @private |
| /// @protected |
| /// @public |
| /// @package [OBJC2] |
| /// |
| /// objc-instance-variable-decl: |
| /// struct-declaration |
| /// |
| void Parser::ParseObjCClassInstanceVariables(Decl *interfaceDecl, |
| tok::ObjCKeywordKind visibility, |
| SourceLocation atLoc) { |
| assert(Tok.is(tok::l_brace) && "expected {"); |
| llvm::SmallVector<Decl *, 32> AllIvarDecls; |
| |
| ParseScope ClassScope(this, Scope::DeclScope|Scope::ClassScope); |
| |
| SourceLocation LBraceLoc = ConsumeBrace(); // the "{" |
| |
| // While we still have something to read, read the instance variables. |
| while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) { |
| // Each iteration of this loop reads one objc-instance-variable-decl. |
| |
| // Check for extraneous top-level semicolon. |
| if (Tok.is(tok::semi)) { |
| Diag(Tok, diag::ext_extra_ivar_semi) |
| << FixItHint::CreateRemoval(Tok.getLocation()); |
| ConsumeToken(); |
| continue; |
| } |
| |
| // Set the default visibility to private. |
| if (Tok.is(tok::at)) { // parse objc-visibility-spec |
| ConsumeToken(); // eat the @ sign |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCAtVisibility(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| switch (Tok.getObjCKeywordID()) { |
| case tok::objc_private: |
| case tok::objc_public: |
| case tok::objc_protected: |
| case tok::objc_package: |
| visibility = Tok.getObjCKeywordID(); |
| ConsumeToken(); |
| continue; |
| default: |
| Diag(Tok, diag::err_objc_illegal_visibility_spec); |
| continue; |
| } |
| } |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteOrdinaryName(getCurScope(), |
| Sema::PCC_ObjCInstanceVariableList); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| struct ObjCIvarCallback : FieldCallback { |
| Parser &P; |
| Decl *IDecl; |
| tok::ObjCKeywordKind visibility; |
| llvm::SmallVectorImpl<Decl *> &AllIvarDecls; |
| |
| ObjCIvarCallback(Parser &P, Decl *IDecl, tok::ObjCKeywordKind V, |
| llvm::SmallVectorImpl<Decl *> &AllIvarDecls) : |
| P(P), IDecl(IDecl), visibility(V), AllIvarDecls(AllIvarDecls) { |
| } |
| |
| Decl *invoke(FieldDeclarator &FD) { |
| // Install the declarator into the interface decl. |
| Decl *Field |
| = P.Actions.ActOnIvar(P.getCurScope(), |
| FD.D.getDeclSpec().getSourceRange().getBegin(), |
| IDecl, FD.D, FD.BitfieldSize, visibility); |
| if (Field) |
| AllIvarDecls.push_back(Field); |
| return Field; |
| } |
| } Callback(*this, interfaceDecl, visibility, AllIvarDecls); |
| |
| // Parse all the comma separated declarators. |
| DeclSpec DS; |
| ParseStructDeclaration(DS, Callback); |
| |
| if (Tok.is(tok::semi)) { |
| ConsumeToken(); |
| } else { |
| Diag(Tok, diag::err_expected_semi_decl_list); |
| // Skip to end of block or statement |
| SkipUntil(tok::r_brace, true, true); |
| } |
| } |
| SourceLocation RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBraceLoc); |
| Actions.ActOnLastBitfield(RBraceLoc, interfaceDecl, AllIvarDecls); |
| // Call ActOnFields() even if we don't have any decls. This is useful |
| // for code rewriting tools that need to be aware of the empty list. |
| Actions.ActOnFields(getCurScope(), atLoc, interfaceDecl, |
| AllIvarDecls.data(), AllIvarDecls.size(), |
| LBraceLoc, RBraceLoc, 0); |
| return; |
| } |
| |
| /// objc-protocol-declaration: |
| /// objc-protocol-definition |
| /// objc-protocol-forward-reference |
| /// |
| /// objc-protocol-definition: |
| /// @protocol identifier |
| /// objc-protocol-refs[opt] |
| /// objc-interface-decl-list |
| /// @end |
| /// |
| /// objc-protocol-forward-reference: |
| /// @protocol identifier-list ';' |
| /// |
| /// "@protocol identifier ;" should be resolved as "@protocol |
| /// identifier-list ;": objc-interface-decl-list may not start with a |
| /// semicolon in the first alternative if objc-protocol-refs are omitted. |
| Decl *Parser::ParseObjCAtProtocolDeclaration(SourceLocation AtLoc, |
| ParsedAttributes &attrs) { |
| assert(Tok.isObjCAtKeyword(tok::objc_protocol) && |
| "ParseObjCAtProtocolDeclaration(): Expected @protocol"); |
| ConsumeToken(); // the "protocol" identifier |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCProtocolDecl(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing protocol name. |
| return 0; |
| } |
| // Save the protocol name, then consume it. |
| IdentifierInfo *protocolName = Tok.getIdentifierInfo(); |
| SourceLocation nameLoc = ConsumeToken(); |
| |
| if (Tok.is(tok::semi)) { // forward declaration of one protocol. |
| IdentifierLocPair ProtoInfo(protocolName, nameLoc); |
| ConsumeToken(); |
| return Actions.ActOnForwardProtocolDeclaration(AtLoc, &ProtoInfo, 1, |
| attrs.getList()); |
| } |
| |
| if (Tok.is(tok::comma)) { // list of forward declarations. |
| llvm::SmallVector<IdentifierLocPair, 8> ProtocolRefs; |
| ProtocolRefs.push_back(std::make_pair(protocolName, nameLoc)); |
| |
| // Parse the list of forward declarations. |
| while (1) { |
| ConsumeToken(); // the ',' |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| ProtocolRefs.push_back(IdentifierLocPair(Tok.getIdentifierInfo(), |
| Tok.getLocation())); |
| ConsumeToken(); // the identifier |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| } |
| // Consume the ';'. |
| if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@protocol")) |
| return 0; |
| |
| return Actions.ActOnForwardProtocolDeclaration(AtLoc, |
| &ProtocolRefs[0], |
| ProtocolRefs.size(), |
| attrs.getList()); |
| } |
| |
| // Last, and definitely not least, parse a protocol declaration. |
| SourceLocation LAngleLoc, EndProtoLoc; |
| |
| llvm::SmallVector<Decl *, 8> ProtocolRefs; |
| llvm::SmallVector<SourceLocation, 8> ProtocolLocs; |
| if (Tok.is(tok::less) && |
| ParseObjCProtocolReferences(ProtocolRefs, ProtocolLocs, false, |
| LAngleLoc, EndProtoLoc)) |
| return 0; |
| |
| Decl *ProtoType = |
| Actions.ActOnStartProtocolInterface(AtLoc, protocolName, nameLoc, |
| ProtocolRefs.data(), |
| ProtocolRefs.size(), |
| ProtocolLocs.data(), |
| EndProtoLoc, attrs.getList()); |
| ParseObjCInterfaceDeclList(ProtoType, tok::objc_protocol); |
| return ProtoType; |
| } |
| |
| /// objc-implementation: |
| /// objc-class-implementation-prologue |
| /// objc-category-implementation-prologue |
| /// |
| /// objc-class-implementation-prologue: |
| /// @implementation identifier objc-superclass[opt] |
| /// objc-class-instance-variables[opt] |
| /// |
| /// objc-category-implementation-prologue: |
| /// @implementation identifier ( identifier ) |
| Decl *Parser::ParseObjCAtImplementationDeclaration( |
| SourceLocation atLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_implementation) && |
| "ParseObjCAtImplementationDeclaration(): Expected @implementation"); |
| ConsumeToken(); // the "implementation" identifier |
| |
| // Code completion after '@implementation'. |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCImplementationDecl(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing class or category name. |
| return 0; |
| } |
| // We have a class or category name - consume it. |
| IdentifierInfo *nameId = Tok.getIdentifierInfo(); |
| SourceLocation nameLoc = ConsumeToken(); // consume class or category name |
| |
| if (Tok.is(tok::l_paren)) { |
| // we have a category implementation. |
| ConsumeParen(); |
| SourceLocation categoryLoc, rparenLoc; |
| IdentifierInfo *categoryId = 0; |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCImplementationCategory(getCurScope(), nameId, nameLoc); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.is(tok::identifier)) { |
| categoryId = Tok.getIdentifierInfo(); |
| categoryLoc = ConsumeToken(); |
| } else { |
| Diag(Tok, diag::err_expected_ident); // missing category name. |
| return 0; |
| } |
| if (Tok.isNot(tok::r_paren)) { |
| Diag(Tok, diag::err_expected_rparen); |
| SkipUntil(tok::r_paren, false); // don't stop at ';' |
| return 0; |
| } |
| rparenLoc = ConsumeParen(); |
| Decl *ImplCatType = Actions.ActOnStartCategoryImplementation( |
| atLoc, nameId, nameLoc, categoryId, |
| categoryLoc); |
| ObjCImpDecl = ImplCatType; |
| PendingObjCImpDecl.push_back(ObjCImpDecl); |
| return 0; |
| } |
| // We have a class implementation |
| SourceLocation superClassLoc; |
| IdentifierInfo *superClassId = 0; |
| if (Tok.is(tok::colon)) { |
| // We have a super class |
| ConsumeToken(); |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing super class name. |
| return 0; |
| } |
| superClassId = Tok.getIdentifierInfo(); |
| superClassLoc = ConsumeToken(); // Consume super class name |
| } |
| Decl *ImplClsType = Actions.ActOnStartClassImplementation( |
| atLoc, nameId, nameLoc, |
| superClassId, superClassLoc); |
| |
| if (Tok.is(tok::l_brace)) // we have ivars |
| ParseObjCClassInstanceVariables(ImplClsType/*FIXME*/, |
| tok::objc_private, atLoc); |
| ObjCImpDecl = ImplClsType; |
| PendingObjCImpDecl.push_back(ObjCImpDecl); |
| |
| return 0; |
| } |
| |
| Decl *Parser::ParseObjCAtEndDeclaration(SourceRange atEnd) { |
| assert(Tok.isObjCAtKeyword(tok::objc_end) && |
| "ParseObjCAtEndDeclaration(): Expected @end"); |
| Decl *Result = ObjCImpDecl; |
| ConsumeToken(); // the "end" identifier |
| if (ObjCImpDecl) { |
| Actions.ActOnAtEnd(getCurScope(), atEnd, ObjCImpDecl); |
| ObjCImpDecl = 0; |
| PendingObjCImpDecl.pop_back(); |
| } |
| else { |
| // missing @implementation |
| Diag(atEnd.getBegin(), diag::warn_expected_implementation); |
| } |
| return Result; |
| } |
| |
| Parser::DeclGroupPtrTy Parser::FinishPendingObjCActions() { |
| Actions.DiagnoseUseOfUnimplementedSelectors(); |
| if (PendingObjCImpDecl.empty()) |
| return Actions.ConvertDeclToDeclGroup(0); |
| Decl *ImpDecl = PendingObjCImpDecl.pop_back_val(); |
| Actions.ActOnAtEnd(getCurScope(), SourceRange(), ImpDecl); |
| return Actions.ConvertDeclToDeclGroup(ImpDecl); |
| } |
| |
| /// compatibility-alias-decl: |
| /// @compatibility_alias alias-name class-name ';' |
| /// |
| Decl *Parser::ParseObjCAtAliasDeclaration(SourceLocation atLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_compatibility_alias) && |
| "ParseObjCAtAliasDeclaration(): Expected @compatibility_alias"); |
| ConsumeToken(); // consume compatibility_alias |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| return 0; |
| } |
| IdentifierInfo *aliasId = Tok.getIdentifierInfo(); |
| SourceLocation aliasLoc = ConsumeToken(); // consume alias-name |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| return 0; |
| } |
| IdentifierInfo *classId = Tok.getIdentifierInfo(); |
| SourceLocation classLoc = ConsumeToken(); // consume class-name; |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after, |
| "@compatibility_alias"); |
| return Actions.ActOnCompatiblityAlias(atLoc, aliasId, aliasLoc, |
| classId, classLoc); |
| } |
| |
| /// property-synthesis: |
| /// @synthesize property-ivar-list ';' |
| /// |
| /// property-ivar-list: |
| /// property-ivar |
| /// property-ivar-list ',' property-ivar |
| /// |
| /// property-ivar: |
| /// identifier |
| /// identifier '=' identifier |
| /// |
| Decl *Parser::ParseObjCPropertySynthesize(SourceLocation atLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_synthesize) && |
| "ParseObjCPropertyDynamic(): Expected '@synthesize'"); |
| ConsumeToken(); // consume synthesize |
| |
| while (true) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCPropertyDefinition(getCurScope(), ObjCImpDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_synthesized_property_name); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| |
| IdentifierInfo *propertyIvar = 0; |
| IdentifierInfo *propertyId = Tok.getIdentifierInfo(); |
| SourceLocation propertyLoc = ConsumeToken(); // consume property name |
| SourceLocation propertyIvarLoc; |
| if (Tok.is(tok::equal)) { |
| // property '=' ivar-name |
| ConsumeToken(); // consume '=' |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCPropertySynthesizeIvar(getCurScope(), propertyId, |
| ObjCImpDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| break; |
| } |
| propertyIvar = Tok.getIdentifierInfo(); |
| propertyIvarLoc = ConsumeToken(); // consume ivar-name |
| } |
| Actions.ActOnPropertyImplDecl(getCurScope(), atLoc, propertyLoc, true, ObjCImpDecl, |
| propertyId, propertyIvar, propertyIvarLoc); |
| if (Tok.isNot(tok::comma)) |
| break; |
| ConsumeToken(); // consume ',' |
| } |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@synthesize"); |
| return 0; |
| } |
| |
| /// property-dynamic: |
| /// @dynamic property-list |
| /// |
| /// property-list: |
| /// identifier |
| /// property-list ',' identifier |
| /// |
| Decl *Parser::ParseObjCPropertyDynamic(SourceLocation atLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_dynamic) && |
| "ParseObjCPropertyDynamic(): Expected '@dynamic'"); |
| ConsumeToken(); // consume dynamic |
| while (true) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCPropertyDefinition(getCurScope(), ObjCImpDecl); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| |
| IdentifierInfo *propertyId = Tok.getIdentifierInfo(); |
| SourceLocation propertyLoc = ConsumeToken(); // consume property name |
| Actions.ActOnPropertyImplDecl(getCurScope(), atLoc, propertyLoc, false, ObjCImpDecl, |
| propertyId, 0, SourceLocation()); |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| ConsumeToken(); // consume ',' |
| } |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@dynamic"); |
| return 0; |
| } |
| |
| /// objc-throw-statement: |
| /// throw expression[opt]; |
| /// |
| StmtResult Parser::ParseObjCThrowStmt(SourceLocation atLoc) { |
| ExprResult Res; |
| ConsumeToken(); // consume throw |
| if (Tok.isNot(tok::semi)) { |
| Res = ParseExpression(); |
| if (Res.isInvalid()) { |
| SkipUntil(tok::semi); |
| return StmtError(); |
| } |
| } |
| // consume ';' |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@throw"); |
| return Actions.ActOnObjCAtThrowStmt(atLoc, Res.take(), getCurScope()); |
| } |
| |
| /// objc-synchronized-statement: |
| /// @synchronized '(' expression ')' compound-statement |
| /// |
| StmtResult |
| Parser::ParseObjCSynchronizedStmt(SourceLocation atLoc) { |
| ConsumeToken(); // consume synchronized |
| if (Tok.isNot(tok::l_paren)) { |
| Diag(Tok, diag::err_expected_lparen_after) << "@synchronized"; |
| return StmtError(); |
| } |
| ConsumeParen(); // '(' |
| ExprResult Res(ParseExpression()); |
| if (Res.isInvalid()) { |
| SkipUntil(tok::semi); |
| return StmtError(); |
| } |
| if (Tok.isNot(tok::r_paren)) { |
| Diag(Tok, diag::err_expected_lbrace); |
| return StmtError(); |
| } |
| ConsumeParen(); // ')' |
| if (Tok.isNot(tok::l_brace)) { |
| Diag(Tok, diag::err_expected_lbrace); |
| return StmtError(); |
| } |
| // Enter a scope to hold everything within the compound stmt. Compound |
| // statements can always hold declarations. |
| ParseScope BodyScope(this, Scope::DeclScope); |
| |
| StmtResult SynchBody(ParseCompoundStatementBody()); |
| |
| BodyScope.Exit(); |
| if (SynchBody.isInvalid()) |
| SynchBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| return Actions.ActOnObjCAtSynchronizedStmt(atLoc, Res.take(), SynchBody.take()); |
| } |
| |
| /// objc-try-catch-statement: |
| /// @try compound-statement objc-catch-list[opt] |
| /// @try compound-statement objc-catch-list[opt] @finally compound-statement |
| /// |
| /// objc-catch-list: |
| /// @catch ( parameter-declaration ) compound-statement |
| /// objc-catch-list @catch ( catch-parameter-declaration ) compound-statement |
| /// catch-parameter-declaration: |
| /// parameter-declaration |
| /// '...' [OBJC2] |
| /// |
| StmtResult Parser::ParseObjCTryStmt(SourceLocation atLoc) { |
| bool catch_or_finally_seen = false; |
| |
| ConsumeToken(); // consume try |
| if (Tok.isNot(tok::l_brace)) { |
| Diag(Tok, diag::err_expected_lbrace); |
| return StmtError(); |
| } |
| StmtVector CatchStmts(Actions); |
| StmtResult FinallyStmt; |
| ParseScope TryScope(this, Scope::DeclScope); |
| StmtResult TryBody(ParseCompoundStatementBody()); |
| TryScope.Exit(); |
| if (TryBody.isInvalid()) |
| TryBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| |
| while (Tok.is(tok::at)) { |
| // At this point, we need to lookahead to determine if this @ is the start |
| // of an @catch or @finally. We don't want to consume the @ token if this |
| // is an @try or @encode or something else. |
| Token AfterAt = GetLookAheadToken(1); |
| if (!AfterAt.isObjCAtKeyword(tok::objc_catch) && |
| !AfterAt.isObjCAtKeyword(tok::objc_finally)) |
| break; |
| |
| SourceLocation AtCatchFinallyLoc = ConsumeToken(); |
| if (Tok.isObjCAtKeyword(tok::objc_catch)) { |
| Decl *FirstPart = 0; |
| ConsumeToken(); // consume catch |
| if (Tok.is(tok::l_paren)) { |
| ConsumeParen(); |
| ParseScope CatchScope(this, Scope::DeclScope|Scope::AtCatchScope); |
| if (Tok.isNot(tok::ellipsis)) { |
| DeclSpec DS; |
| ParseDeclarationSpecifiers(DS); |
| // For some odd reason, the name of the exception variable is |
| // optional. As a result, we need to use "PrototypeContext", because |
| // we must accept either 'declarator' or 'abstract-declarator' here. |
| Declarator ParmDecl(DS, Declarator::PrototypeContext); |
| ParseDeclarator(ParmDecl); |
| |
| // Inform the actions module about the declarator, so it |
| // gets added to the current scope. |
| FirstPart = Actions.ActOnObjCExceptionDecl(getCurScope(), ParmDecl); |
| } else |
| ConsumeToken(); // consume '...' |
| |
| SourceLocation RParenLoc; |
| |
| if (Tok.is(tok::r_paren)) |
| RParenLoc = ConsumeParen(); |
| else // Skip over garbage, until we get to ')'. Eat the ')'. |
| SkipUntil(tok::r_paren, true, false); |
| |
| StmtResult CatchBody(true); |
| if (Tok.is(tok::l_brace)) |
| CatchBody = ParseCompoundStatementBody(); |
| else |
| Diag(Tok, diag::err_expected_lbrace); |
| if (CatchBody.isInvalid()) |
| CatchBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| |
| StmtResult Catch = Actions.ActOnObjCAtCatchStmt(AtCatchFinallyLoc, |
| RParenLoc, |
| FirstPart, |
| CatchBody.take()); |
| if (!Catch.isInvalid()) |
| CatchStmts.push_back(Catch.release()); |
| |
| } else { |
| Diag(AtCatchFinallyLoc, diag::err_expected_lparen_after) |
| << "@catch clause"; |
| return StmtError(); |
| } |
| catch_or_finally_seen = true; |
| } else { |
| assert(Tok.isObjCAtKeyword(tok::objc_finally) && "Lookahead confused?"); |
| ConsumeToken(); // consume finally |
| ParseScope FinallyScope(this, Scope::DeclScope); |
| |
| StmtResult FinallyBody(true); |
| if (Tok.is(tok::l_brace)) |
| FinallyBody = ParseCompoundStatementBody(); |
| else |
| Diag(Tok, diag::err_expected_lbrace); |
| if (FinallyBody.isInvalid()) |
| FinallyBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| FinallyStmt = Actions.ActOnObjCAtFinallyStmt(AtCatchFinallyLoc, |
| FinallyBody.take()); |
| catch_or_finally_seen = true; |
| break; |
| } |
| } |
| if (!catch_or_finally_seen) { |
| Diag(atLoc, diag::err_missing_catch_finally); |
| return StmtError(); |
| } |
| |
| return Actions.ActOnObjCAtTryStmt(atLoc, TryBody.take(), |
| move_arg(CatchStmts), |
| FinallyStmt.take()); |
| } |
| |
| /// objc-method-def: objc-method-proto ';'[opt] '{' body '}' |
| /// |
| Decl *Parser::ParseObjCMethodDefinition() { |
| Decl *MDecl = ParseObjCMethodPrototype(ObjCImpDecl); |
| |
| PrettyDeclStackTraceEntry CrashInfo(Actions, MDecl, Tok.getLocation(), |
| "parsing Objective-C method"); |
| |
| // parse optional ';' |
| if (Tok.is(tok::semi)) { |
| if (ObjCImpDecl) { |
| Diag(Tok, diag::warn_semicolon_before_method_body) |
| << FixItHint::CreateRemoval(Tok.getLocation()); |
| } |
| ConsumeToken(); |
| } |
| |
| // We should have an opening brace now. |
| if (Tok.isNot(tok::l_brace)) { |
| Diag(Tok, diag::err_expected_method_body); |
| |
| // Skip over garbage, until we get to '{'. Don't eat the '{'. |
| SkipUntil(tok::l_brace, true, true); |
| |
| // If we didn't find the '{', bail out. |
| if (Tok.isNot(tok::l_brace)) |
| return 0; |
| } |
| SourceLocation BraceLoc = Tok.getLocation(); |
| |
| // Enter a scope for the method body. |
| ParseScope BodyScope(this, |
| Scope::ObjCMethodScope|Scope::FnScope|Scope::DeclScope); |
| |
| // Tell the actions module that we have entered a method definition with the |
| // specified Declarator for the method. |
| Actions.ActOnStartOfObjCMethodDef(getCurScope(), MDecl); |
| |
| if (PP.isCodeCompletionEnabled()) { |
| if (trySkippingFunctionBodyForCodeCompletion()) { |
| BodyScope.Exit(); |
| return Actions.ActOnFinishFunctionBody(MDecl, 0); |
| } |
| } |
| |
| StmtResult FnBody(ParseCompoundStatementBody()); |
| |
| // If the function body could not be parsed, make a bogus compoundstmt. |
| if (FnBody.isInvalid()) |
| FnBody = Actions.ActOnCompoundStmt(BraceLoc, BraceLoc, |
| MultiStmtArg(Actions), false); |
| |
| // Leave the function body scope. |
| BodyScope.Exit(); |
| |
| // TODO: Pass argument information. |
| Actions.ActOnFinishFunctionBody(MDecl, FnBody.take()); |
| return MDecl; |
| } |
| |
| StmtResult Parser::ParseObjCAtStatement(SourceLocation AtLoc) { |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCAtStatement(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| return StmtError(); |
| } |
| |
| if (Tok.isObjCAtKeyword(tok::objc_try)) |
| return ParseObjCTryStmt(AtLoc); |
| |
| if (Tok.isObjCAtKeyword(tok::objc_throw)) |
| return ParseObjCThrowStmt(AtLoc); |
| |
| if (Tok.isObjCAtKeyword(tok::objc_synchronized)) |
| return ParseObjCSynchronizedStmt(AtLoc); |
| |
| ExprResult Res(ParseExpressionWithLeadingAt(AtLoc)); |
| if (Res.isInvalid()) { |
| // If the expression is invalid, skip ahead to the next semicolon. Not |
| // doing this opens us up to the possibility of infinite loops if |
| // ParseExpression does not consume any tokens. |
| SkipUntil(tok::semi); |
| return StmtError(); |
| } |
| |
| // Otherwise, eat the semicolon. |
| ExpectAndConsumeSemi(diag::err_expected_semi_after_expr); |
| return Actions.ActOnExprStmt(Actions.MakeFullExpr(Res.take())); |
| } |
| |
| ExprResult Parser::ParseObjCAtExpression(SourceLocation AtLoc) { |
| switch (Tok.getKind()) { |
| case tok::code_completion: |
| Actions.CodeCompleteObjCAtExpression(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| return ExprError(); |
| |
| case tok::string_literal: // primary-expression: string-literal |
| case tok::wide_string_literal: |
| return ParsePostfixExpressionSuffix(ParseObjCStringLiteral(AtLoc)); |
| default: |
| if (Tok.getIdentifierInfo() == 0) |
| return ExprError(Diag(AtLoc, diag::err_unexpected_at)); |
| |
| switch (Tok.getIdentifierInfo()->getObjCKeywordID()) { |
| case tok::objc_encode: |
| return ParsePostfixExpressionSuffix(ParseObjCEncodeExpression(AtLoc)); |
| case tok::objc_protocol: |
| return ParsePostfixExpressionSuffix(ParseObjCProtocolExpression(AtLoc)); |
| case tok::objc_selector: |
| return ParsePostfixExpressionSuffix(ParseObjCSelectorExpression(AtLoc)); |
| default: |
| return ExprError(Diag(AtLoc, diag::err_unexpected_at)); |
| } |
| } |
| } |
| |
| /// \brirg Parse the receiver of an Objective-C++ message send. |
| /// |
| /// This routine parses the receiver of a message send in |
| /// Objective-C++ either as a type or as an expression. Note that this |
| /// routine must not be called to parse a send to 'super', since it |
| /// has no way to return such a result. |
| /// |
| /// \param IsExpr Whether the receiver was parsed as an expression. |
| /// |
| /// \param TypeOrExpr If the receiver was parsed as an expression (\c |
| /// IsExpr is true), the parsed expression. If the receiver was parsed |
| /// as a type (\c IsExpr is false), the parsed type. |
| /// |
| /// \returns True if an error occurred during parsing or semantic |
| /// analysis, in which case the arguments do not have valid |
| /// values. Otherwise, returns false for a successful parse. |
| /// |
| /// objc-receiver: [C++] |
| /// 'super' [not parsed here] |
| /// expression |
| /// simple-type-specifier |
| /// typename-specifier |
| bool Parser::ParseObjCXXMessageReceiver(bool &IsExpr, void *&TypeOrExpr) { |
| InMessageExpressionRAIIObject InMessage(*this, true); |
| |
| if (Tok.is(tok::identifier) || Tok.is(tok::coloncolon) || |
| Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) |
| TryAnnotateTypeOrScopeToken(); |
| |
| if (!isCXXSimpleTypeSpecifier()) { |
| // objc-receiver: |
| // expression |
| ExprResult Receiver = ParseExpression(); |
| if (Receiver.isInvalid()) |
| return true; |
| |
| IsExpr = true; |
| TypeOrExpr = Receiver.take(); |
| return false; |
| } |
| |
| // objc-receiver: |
| // typename-specifier |
| // simple-type-specifier |
| // expression (that starts with one of the above) |
| DeclSpec DS; |
| ParseCXXSimpleTypeSpecifier(DS); |
| |
| if (Tok.is(tok::l_paren)) { |
| // If we see an opening parentheses at this point, we are |
| // actually parsing an expression that starts with a |
| // function-style cast, e.g., |
| // |
| // postfix-expression: |
| // simple-type-specifier ( expression-list [opt] ) |
| // typename-specifier ( expression-list [opt] ) |
| // |
| // Parse the remainder of this case, then the (optional) |
| // postfix-expression suffix, followed by the (optional) |
| // right-hand side of the binary expression. We have an |
| // instance method. |
| ExprResult Receiver = ParseCXXTypeConstructExpression(DS); |
| if (!Receiver.isInvalid()) |
| Receiver = ParsePostfixExpressionSuffix(Receiver.take()); |
| if (!Receiver.isInvalid()) |
| Receiver = ParseRHSOfBinaryExpression(Receiver.take(), prec::Comma); |
| if (Receiver.isInvalid()) |
| return true; |
| |
| IsExpr = true; |
| TypeOrExpr = Receiver.take(); |
| return false; |
| } |
| |
| // We have a class message. Turn the simple-type-specifier or |
| // typename-specifier we parsed into a type and parse the |
| // remainder of the class message. |
| Declarator DeclaratorInfo(DS, Declarator::TypeNameContext); |
| TypeResult Type = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo); |
| if (Type.isInvalid()) |
| return true; |
| |
| IsExpr = false; |
| TypeOrExpr = Type.get().getAsOpaquePtr(); |
| return false; |
| } |
| |
| /// \brief Determine whether the parser is currently referring to a an |
| /// Objective-C message send, using a simplified heuristic to avoid overhead. |
| /// |
| /// This routine will only return true for a subset of valid message-send |
| /// expressions. |
| bool Parser::isSimpleObjCMessageExpression() { |
| assert(Tok.is(tok::l_square) && getLang().ObjC1 && |
| "Incorrect start for isSimpleObjCMessageExpression"); |
| return GetLookAheadToken(1).is(tok::identifier) && |
| GetLookAheadToken(2).is(tok::identifier); |
| } |
| |
| bool Parser::isStartOfObjCClassMessageMissingOpenBracket() { |
| if (!getLang().ObjC1 || !NextToken().is(tok::identifier) || |
| InMessageExpression) |
| return false; |
| |
| |
| ParsedType Type; |
| |
| if (Tok.is(tok::annot_typename)) |
| Type = getTypeAnnotation(Tok); |
| else if (Tok.is(tok::identifier)) |
| Type = Actions.getTypeName(*Tok.getIdentifierInfo(), Tok.getLocation(), |
| getCurScope()); |
| else |
| return false; |
| |
| if (!Type.get().isNull() && Type.get()->isObjCObjectOrInterfaceType()) { |
| const Token &AfterNext = GetLookAheadToken(2); |
| if (AfterNext.is(tok::colon) || AfterNext.is(tok::r_square)) { |
| if (Tok.is(tok::identifier)) |
| TryAnnotateTypeOrScopeToken(); |
| |
| return Tok.is(tok::annot_typename); |
| } |
| } |
| |
| return false; |
| } |
| |
| /// objc-message-expr: |
| /// '[' objc-receiver objc-message-args ']' |
| /// |
| /// objc-receiver: [C] |
| /// 'super' |
| /// expression |
| /// class-name |
| /// type-name |
| /// |
| ExprResult Parser::ParseObjCMessageExpression() { |
| assert(Tok.is(tok::l_square) && "'[' expected"); |
| SourceLocation LBracLoc = ConsumeBracket(); // consume '[' |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCMessageReceiver(getCurScope()); |
| ConsumeCodeCompletionToken(); |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| InMessageExpressionRAIIObject InMessage(*this, true); |
| |
| if (getLang().CPlusPlus) { |
| // We completely separate the C and C++ cases because C++ requires |
| // more complicated (read: slower) parsing. |
| |
| // Handle send to super. |
| // FIXME: This doesn't benefit from the same typo-correction we |
| // get in Objective-C. |
| if (Tok.is(tok::identifier) && Tok.getIdentifierInfo() == Ident_super && |
| NextToken().isNot(tok::period) && getCurScope()->isInObjcMethodScope()) |
| return ParseObjCMessageExpressionBody(LBracLoc, ConsumeToken(), |
| ParsedType(), 0); |
| |
| // Parse the receiver, which is either a type or an expression. |
| bool IsExpr; |
| void *TypeOrExpr = NULL; |
| if (ParseObjCXXMessageReceiver(IsExpr, TypeOrExpr)) { |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| if (IsExpr) |
| return ParseObjCMessageExpressionBody(LBracLoc, SourceLocation(), |
| ParsedType(), |
| static_cast<Expr*>(TypeOrExpr)); |
| |
| return ParseObjCMessageExpressionBody(LBracLoc, SourceLocation(), |
| ParsedType::getFromOpaquePtr(TypeOrExpr), |
| 0); |
| } |
| |
| if (Tok.is(tok::identifier)) { |
| IdentifierInfo *Name = Tok.getIdentifierInfo(); |
| SourceLocation NameLoc = Tok.getLocation(); |
| ParsedType ReceiverType; |
| switch (Actions.getObjCMessageKind(getCurScope(), Name, NameLoc, |
| Name == Ident_super, |
| NextToken().is(tok::period), |
| ReceiverType)) { |
| case Sema::ObjCSuperMessage: |
| return ParseObjCMessageExpressionBody(LBracLoc, ConsumeToken(), |
| ParsedType(), 0); |
| |
| case Sema::ObjCClassMessage: |
| if (!ReceiverType) { |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| ConsumeToken(); // the type name |
| |
| return ParseObjCMessageExpressionBody(LBracLoc, SourceLocation(), |
| ReceiverType, 0); |
| |
| case Sema::ObjCInstanceMessage: |
| // Fall through to parse an expression. |
| break; |
| } |
| } |
| |
| // Otherwise, an arbitrary expression can be the receiver of a send. |
| ExprResult Res(ParseExpression()); |
| if (Res.isInvalid()) { |
| SkipUntil(tok::r_square); |
| return move(Res); |
| } |
| |
| return ParseObjCMessageExpressionBody(LBracLoc, SourceLocation(), |
| ParsedType(), Res.take()); |
| } |
| |
| /// \brief Parse the remainder of an Objective-C message following the |
| /// '[' objc-receiver. |
| /// |
| /// This routine handles sends to super, class messages (sent to a |
| /// class name), and instance messages (sent to an object), and the |
| /// target is represented by \p SuperLoc, \p ReceiverType, or \p |
| /// ReceiverExpr, respectively. Only one of these parameters may have |
| /// a valid value. |
| /// |
| /// \param LBracLoc The location of the opening '['. |
| /// |
| /// \param SuperLoc If this is a send to 'super', the location of the |
| /// 'super' keyword that indicates a send to the superclass. |
| /// |
| /// \param ReceiverType If this is a class message, the type of the |
| /// class we are sending a message to. |
| /// |
| /// \param ReceiverExpr If this is an instance message, the expression |
| /// used to compute the receiver object. |
| /// |
| /// objc-message-args: |
| /// objc-selector |
| /// objc-keywordarg-list |
| /// |
| /// objc-keywordarg-list: |
| /// objc-keywordarg |
| /// objc-keywordarg-list objc-keywordarg |
| /// |
| /// objc-keywordarg: |
| /// selector-name[opt] ':' objc-keywordexpr |
| /// |
| /// objc-keywordexpr: |
| /// nonempty-expr-list |
| /// |
| /// nonempty-expr-list: |
| /// assignment-expression |
| /// nonempty-expr-list , assignment-expression |
| /// |
| ExprResult |
| Parser::ParseObjCMessageExpressionBody(SourceLocation LBracLoc, |
| SourceLocation SuperLoc, |
| ParsedType ReceiverType, |
| ExprArg ReceiverExpr) { |
| InMessageExpressionRAIIObject InMessage(*this, true); |
| |
| if (Tok.is(tok::code_completion)) { |
| if (SuperLoc.isValid()) |
| Actions.CodeCompleteObjCSuperMessage(getCurScope(), SuperLoc, 0, 0, |
| false); |
| else if (ReceiverType) |
| Actions.CodeCompleteObjCClassMessage(getCurScope(), ReceiverType, 0, 0, |
| false); |
| else |
| Actions.CodeCompleteObjCInstanceMessage(getCurScope(), ReceiverExpr, |
| 0, 0, false); |
| ConsumeCodeCompletionToken(); |
| } |
| |
| // Parse objc-selector |
| SourceLocation Loc; |
| IdentifierInfo *selIdent = ParseObjCSelectorPiece(Loc); |
| |
| SourceLocation SelectorLoc = Loc; |
| |
| llvm::SmallVector<IdentifierInfo *, 12> KeyIdents; |
| ExprVector KeyExprs(Actions); |
| |
| if (Tok.is(tok::colon)) { |
| while (1) { |
| // Each iteration parses a single keyword argument. |
| KeyIdents.push_back(selIdent); |
| |
| if (Tok.isNot(tok::colon)) { |
| Diag(Tok, diag::err_expected_colon); |
| // We must manually skip to a ']', otherwise the expression skipper will |
| // stop at the ']' when it skips to the ';'. We want it to skip beyond |
| // the enclosing expression. |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| ConsumeToken(); // Eat the ':'. |
| /// Parse the expression after ':' |
| |
| if (Tok.is(tok::code_completion)) { |
| if (SuperLoc.isValid()) |
| Actions.CodeCompleteObjCSuperMessage(getCurScope(), SuperLoc, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/true); |
| else if (ReceiverType) |
| Actions.CodeCompleteObjCClassMessage(getCurScope(), ReceiverType, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/true); |
| else |
| Actions.CodeCompleteObjCInstanceMessage(getCurScope(), ReceiverExpr, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/true); |
| |
| ConsumeCodeCompletionToken(); |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| ExprResult Res(ParseAssignmentExpression()); |
| if (Res.isInvalid()) { |
| // We must manually skip to a ']', otherwise the expression skipper will |
| // stop at the ']' when it skips to the ';'. We want it to skip beyond |
| // the enclosing expression. |
| SkipUntil(tok::r_square); |
| return move(Res); |
| } |
| |
| // We have a valid expression. |
| KeyExprs.push_back(Res.release()); |
| |
| // Code completion after each argument. |
| if (Tok.is(tok::code_completion)) { |
| if (SuperLoc.isValid()) |
| Actions.CodeCompleteObjCSuperMessage(getCurScope(), SuperLoc, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/false); |
| else if (ReceiverType) |
| Actions.CodeCompleteObjCClassMessage(getCurScope(), ReceiverType, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/false); |
| else |
| Actions.CodeCompleteObjCInstanceMessage(getCurScope(), ReceiverExpr, |
| KeyIdents.data(), |
| KeyIdents.size(), |
| /*AtArgumentEpression=*/false); |
| ConsumeCodeCompletionToken(); |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| // Check for another keyword selector. |
| selIdent = ParseObjCSelectorPiece(Loc); |
| if (!selIdent && Tok.isNot(tok::colon)) |
| break; |
| // We have a selector or a colon, continue parsing. |
| } |
| // Parse the, optional, argument list, comma separated. |
| while (Tok.is(tok::comma)) { |
| ConsumeToken(); // Eat the ','. |
| /// Parse the expression after ',' |
| ExprResult Res(ParseAssignmentExpression()); |
| if (Res.isInvalid()) { |
| // We must manually skip to a ']', otherwise the expression skipper will |
| // stop at the ']' when it skips to the ';'. We want it to skip beyond |
| // the enclosing expression. |
| SkipUntil(tok::r_square); |
| return move(Res); |
| } |
| |
| // We have a valid expression. |
| KeyExprs.push_back(Res.release()); |
| } |
| } else if (!selIdent) { |
| Diag(Tok, diag::err_expected_ident); // missing selector name. |
| |
| // We must manually skip to a ']', otherwise the expression skipper will |
| // stop at the ']' when it skips to the ';'. We want it to skip beyond |
| // the enclosing expression. |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| if (Tok.isNot(tok::r_square)) { |
| if (Tok.is(tok::identifier)) |
| Diag(Tok, diag::err_expected_colon); |
| else |
| Diag(Tok, diag::err_expected_rsquare); |
| // We must manually skip to a ']', otherwise the expression skipper will |
| // stop at the ']' when it skips to the ';'. We want it to skip beyond |
| // the enclosing expression. |
| SkipUntil(tok::r_square); |
| return ExprError(); |
| } |
| |
| SourceLocation RBracLoc = ConsumeBracket(); // consume ']' |
| |
| unsigned nKeys = KeyIdents.size(); |
| if (nKeys == 0) |
| KeyIdents.push_back(selIdent); |
| Selector Sel = PP.getSelectorTable().getSelector(nKeys, &KeyIdents[0]); |
| |
| if (SuperLoc.isValid()) |
| return Actions.ActOnSuperMessage(getCurScope(), SuperLoc, Sel, |
| LBracLoc, SelectorLoc, RBracLoc, |
| MultiExprArg(Actions, |
| KeyExprs.take(), |
| KeyExprs.size())); |
| else if (ReceiverType) |
| return Actions.ActOnClassMessage(getCurScope(), ReceiverType, Sel, |
| LBracLoc, SelectorLoc, RBracLoc, |
| MultiExprArg(Actions, |
| KeyExprs.take(), |
| KeyExprs.size())); |
| return Actions.ActOnInstanceMessage(getCurScope(), ReceiverExpr, Sel, |
| LBracLoc, SelectorLoc, RBracLoc, |
| MultiExprArg(Actions, |
| KeyExprs.take(), |
| KeyExprs.size())); |
| } |
| |
| ExprResult Parser::ParseObjCStringLiteral(SourceLocation AtLoc) { |
| ExprResult Res(ParseStringLiteralExpression()); |
| if (Res.isInvalid()) return move(Res); |
| |
| // @"foo" @"bar" is a valid concatenated string. Eat any subsequent string |
| // expressions. At this point, we know that the only valid thing that starts |
| // with '@' is an @"". |
| llvm::SmallVector<SourceLocation, 4> AtLocs; |
| ExprVector AtStrings(Actions); |
| AtLocs.push_back(AtLoc); |
| AtStrings.push_back(Res.release()); |
| |
| while (Tok.is(tok::at)) { |
| AtLocs.push_back(ConsumeToken()); // eat the @. |
| |
| // Invalid unless there is a string literal. |
| if (!isTokenStringLiteral()) |
| return ExprError(Diag(Tok, diag::err_objc_concat_string)); |
| |
| ExprResult Lit(ParseStringLiteralExpression()); |
| if (Lit.isInvalid()) |
| return move(Lit); |
| |
| AtStrings.push_back(Lit.release()); |
| } |
| |
| return Owned(Actions.ParseObjCStringLiteral(&AtLocs[0], AtStrings.take(), |
| AtStrings.size())); |
| } |
| |
| /// objc-encode-expression: |
| /// @encode ( type-name ) |
| ExprResult |
| Parser::ParseObjCEncodeExpression(SourceLocation AtLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_encode) && "Not an @encode expression!"); |
| |
| SourceLocation EncLoc = ConsumeToken(); |
| |
| if (Tok.isNot(tok::l_paren)) |
| return ExprError(Diag(Tok, diag::err_expected_lparen_after) << "@encode"); |
| |
| SourceLocation LParenLoc = ConsumeParen(); |
| |
| TypeResult Ty = ParseTypeName(); |
| |
| SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| |
| if (Ty.isInvalid()) |
| return ExprError(); |
| |
| return Owned(Actions.ParseObjCEncodeExpression(AtLoc, EncLoc, LParenLoc, |
| Ty.get(), RParenLoc)); |
| } |
| |
| /// objc-protocol-expression |
| /// @protocol ( protocol-name ) |
| ExprResult |
| Parser::ParseObjCProtocolExpression(SourceLocation AtLoc) { |
| SourceLocation ProtoLoc = ConsumeToken(); |
| |
| if (Tok.isNot(tok::l_paren)) |
| return ExprError(Diag(Tok, diag::err_expected_lparen_after) << "@protocol"); |
| |
| SourceLocation LParenLoc = ConsumeParen(); |
| |
| if (Tok.isNot(tok::identifier)) |
| return ExprError(Diag(Tok, diag::err_expected_ident)); |
| |
| IdentifierInfo *protocolId = Tok.getIdentifierInfo(); |
| ConsumeToken(); |
| |
| SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| |
| return Owned(Actions.ParseObjCProtocolExpression(protocolId, AtLoc, ProtoLoc, |
| LParenLoc, RParenLoc)); |
| } |
| |
| /// objc-selector-expression |
| /// @selector '(' objc-keyword-selector ')' |
| ExprResult Parser::ParseObjCSelectorExpression(SourceLocation AtLoc) { |
| SourceLocation SelectorLoc = ConsumeToken(); |
| |
| if (Tok.isNot(tok::l_paren)) |
| return ExprError(Diag(Tok, diag::err_expected_lparen_after) << "@selector"); |
| |
| llvm::SmallVector<IdentifierInfo *, 12> KeyIdents; |
| SourceLocation LParenLoc = ConsumeParen(); |
| SourceLocation sLoc; |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCSelector(getCurScope(), KeyIdents.data(), |
| KeyIdents.size()); |
| ConsumeCodeCompletionToken(); |
| MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| return ExprError(); |
| } |
| |
| IdentifierInfo *SelIdent = ParseObjCSelectorPiece(sLoc); |
| if (!SelIdent && // missing selector name. |
| Tok.isNot(tok::colon) && Tok.isNot(tok::coloncolon)) |
| return ExprError(Diag(Tok, diag::err_expected_ident)); |
| |
| KeyIdents.push_back(SelIdent); |
| unsigned nColons = 0; |
| if (Tok.isNot(tok::r_paren)) { |
| while (1) { |
| if (Tok.is(tok::coloncolon)) { // Handle :: in C++. |
| ++nColons; |
| KeyIdents.push_back(0); |
| } else if (Tok.isNot(tok::colon)) |
| return ExprError(Diag(Tok, diag::err_expected_colon)); |
| |
| ++nColons; |
| ConsumeToken(); // Eat the ':'. |
| if (Tok.is(tok::r_paren)) |
| break; |
| |
| if (Tok.is(tok::code_completion)) { |
| Actions.CodeCompleteObjCSelector(getCurScope(), KeyIdents.data(), |
| KeyIdents.size()); |
| ConsumeCodeCompletionToken(); |
| MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| return ExprError(); |
| } |
| |
| // Check for another keyword selector. |
| SourceLocation Loc; |
| SelIdent = ParseObjCSelectorPiece(Loc); |
| KeyIdents.push_back(SelIdent); |
| if (!SelIdent && Tok.isNot(tok::colon)) |
| break; |
| } |
| } |
| SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| Selector Sel = PP.getSelectorTable().getSelector(nColons, &KeyIdents[0]); |
| return Owned(Actions.ParseObjCSelectorExpression(Sel, AtLoc, SelectorLoc, |
| LParenLoc, RParenLoc)); |
| } |
