/* A Bison parser, made by GNU Bison 1.875c.  */

/* Skeleton parser for Yacc-like parsing with Bison,
   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.

   This program 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.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* As a special exception, when this file is copied by Bison into a
   Bison output file, you may use that output file without restriction.
   This special exception was added by the Free Software Foundation
   in version 1.24 of Bison.  */

/* Written by Richard Stallman by simplifying the original so called
   ``semantic'' parser.  */

/* All symbols defined below should begin with yy or YY, to avoid
   infringing on user name space.  This should be done even for local
   variables, as they might otherwise be expanded by user macros.
   There are some unavoidable exceptions within include files to
   define necessary library symbols; they are noted "INFRINGES ON
   USER NAME SPACE" below.  */

/* Identify Bison output.  */
#define YYBISON 1

/* Skeleton name.  */
#define YYSKELETON_NAME "yacc.c"

/* Pure parsers.  */
#define YYPURE 0

/* Using locations.  */
#define YYLSP_NEEDED 0


/* Tokens.  */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
   /* Put the tokens into the symbol table, so that GDB and other debuggers
      know about them.  */
   enum yytokentype {
     INT = 258,
     FLOAT = 259,
     RAW_STRING = 260,
     STRING = 261,
     CHAR = 262,
     NAME = 263,
     TYPENAME = 264,
     COMPLETE = 265,
     NAME_OR_INT = 266,
     TRUE_KEYWORD = 267,
     FALSE_KEYWORD = 268,
     STRUCT_KEYWORD = 269,
     INTERFACE_KEYWORD = 270,
     TYPE_KEYWORD = 271,
     CHAN_KEYWORD = 272,
     SIZEOF_KEYWORD = 273,
     LEN_KEYWORD = 274,
     CAP_KEYWORD = 275,
     NEW_KEYWORD = 276,
     IOTA_KEYWORD = 277,
     NIL_KEYWORD = 278,
     CONST_KEYWORD = 279,
     DOTDOTDOT = 280,
     ENTRY = 281,
     ERROR = 282,
     BYTE_KEYWORD = 283,
     DOLLAR_VARIABLE = 284,
     ASSIGN_MODIFY = 285,
     ABOVE_COMMA = 286,
     OROR = 287,
     ANDAND = 288,
     ANDNOT = 289,
     NOTEQUAL = 290,
     EQUAL = 291,
     GEQ = 292,
     LEQ = 293,
     RSH = 294,
     LSH = 295,
     DECREMENT = 296,
     INCREMENT = 297,
     UNARY = 298,
     LEFT_ARROW = 299
   };
#endif
#define INT 258
#define FLOAT 259
#define RAW_STRING 260
#define STRING 261
#define CHAR 262
#define NAME 263
#define TYPENAME 264
#define COMPLETE 265
#define NAME_OR_INT 266
#define TRUE_KEYWORD 267
#define FALSE_KEYWORD 268
#define STRUCT_KEYWORD 269
#define INTERFACE_KEYWORD 270
#define TYPE_KEYWORD 271
#define CHAN_KEYWORD 272
#define SIZEOF_KEYWORD 273
#define LEN_KEYWORD 274
#define CAP_KEYWORD 275
#define NEW_KEYWORD 276
#define IOTA_KEYWORD 277
#define NIL_KEYWORD 278
#define CONST_KEYWORD 279
#define DOTDOTDOT 280
#define ENTRY 281
#define ERROR 282
#define BYTE_KEYWORD 283
#define DOLLAR_VARIABLE 284
#define ASSIGN_MODIFY 285
#define ABOVE_COMMA 286
#define OROR 287
#define ANDAND 288
#define ANDNOT 289
#define NOTEQUAL 290
#define EQUAL 291
#define GEQ 292
#define LEQ 293
#define RSH 294
#define LSH 295
#define DECREMENT 296
#define INCREMENT 297
#define UNARY 298
#define LEFT_ARROW 299


/* Copy the first part of user declarations.  */
#line 52 "go-exp.y"


#include "defs.h"
#include "gdb_string.h"
#include <ctype.h>
#include "expression.h"
#include "value.h"
#include "parser-defs.h"
#include "language.h"
#include "c-lang.h"
#include "go-lang.h"
#include "bfd.h" /* Required by objfiles.h.  */
#include "symfile.h" /* Required by objfiles.h.  */
#include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
#include "charset.h"
#include "block.h"

#define parse_type builtin_type (parse_gdbarch)

/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
   as well as gratuitiously global symbol names, so we can have multiple
   yacc generated parsers in gdb.  Note that these are only the variables
   produced by yacc.  If other parser generators (bison, byacc, etc) produce
   additional global names that conflict at link time, then those parser
   generators need to be fixed instead of adding those names to this list.  */

#define	yymaxdepth go_maxdepth
#define	yyparse	go_parse_internal
#define	yylex	go_lex
#define	yyerror	go_error
#define	yylval	go_lval
#define	yychar	go_char
#define	yydebug	go_debug
#define	yypact	go_pact
#define	yyr1	go_r1
#define	yyr2	go_r2
#define	yydef	go_def
#define	yychk	go_chk
#define	yypgo	go_pgo
#define	yyact	go_act
#define	yyexca	go_exca
#define yyerrflag go_errflag
#define yynerrs	go_nerrs
#define	yyps	go_ps
#define	yypv	go_pv
#define	yys	go_s
#define	yy_yys	go_yys
#define	yystate	go_state
#define	yytmp	go_tmp
#define	yyv	go_v
#define	yy_yyv	go_yyv
#define	yyval	go_val
#define	yylloc	go_lloc
#define yyreds	go_reds		/* With YYDEBUG defined */
#define yytoks	go_toks		/* With YYDEBUG defined */
#define yyname	go_name		/* With YYDEBUG defined */
#define yyrule	go_rule		/* With YYDEBUG defined */
#define yylhs	go_yylhs
#define yylen	go_yylen
#define yydefred go_yydefred
#define yydgoto	go_yydgoto
#define yysindex go_yysindex
#define yyrindex go_yyrindex
#define yygindex go_yygindex
#define yytable	 go_yytable
#define yycheck	 go_yycheck

#ifndef YYDEBUG
#define	YYDEBUG 1		/* Default to yydebug support */
#endif

#define YYFPRINTF parser_fprintf

int yyparse (void);

static int yylex (void);

void yyerror (char *);


/* Enabling traces.  */
#ifndef YYDEBUG
# define YYDEBUG 0
#endif

/* Enabling verbose error messages.  */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
# define YYERROR_VERBOSE 0
#endif

#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
#line 138 "go-exp.y"
typedef union YYSTYPE {
    LONGEST lval;
    struct {
      LONGEST val;
      struct type *type;
    } typed_val_int;
    struct {
      DOUBLEST dval;
      struct type *type;
    } typed_val_float;
    struct stoken sval;
    struct symtoken ssym;
    struct type *tval;
    struct typed_stoken tsval;
    struct ttype tsym;
    int voidval;
    enum exp_opcode opcode;
    struct internalvar *ivar;
    struct stoken_vector svec;
  } YYSTYPE;
/* Line 191 of yacc.c.  */
#line 266 "go-exp.c"
# define yystype YYSTYPE /* obsolescent; will be withdrawn */
# define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
#endif


/* Copy the second part of user declarations.  */
#line 159 "go-exp.y"

/* YYSTYPE gets defined by %union.  */
static int parse_number (char *, int, int, YYSTYPE *);
static int parse_go_float (struct gdbarch *gdbarch, const char *p, int len,
			   DOUBLEST *d, struct type **t);


/* Line 214 of yacc.c.  */
#line 284 "go-exp.c"

#if ! defined (yyoverflow) || YYERROR_VERBOSE

# ifndef YYFREE
#  define YYFREE xfree
# endif
# ifndef YYMALLOC
#  define YYMALLOC xmalloc
# endif

/* The parser invokes alloca or xmalloc; define the necessary symbols.  */

# ifdef YYSTACK_USE_ALLOCA
#  if YYSTACK_USE_ALLOCA
#   define YYSTACK_ALLOC alloca
#  endif
# else
#  if defined (alloca) || defined (_ALLOCA_H)
#   define YYSTACK_ALLOC alloca
#  else
#   ifdef __GNUC__
#    define YYSTACK_ALLOC __builtin_alloca
#   endif
#  endif
# endif

# ifdef YYSTACK_ALLOC
   /* Pacify GCC's `empty if-body' warning. */
#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
# else
#  if defined (__STDC__) || defined (__cplusplus)
#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
#   define YYSIZE_T size_t
#  endif
#  define YYSTACK_ALLOC YYMALLOC
#  define YYSTACK_FREE YYFREE
# endif
#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */


#if (! defined (yyoverflow) \
     && (! defined (__cplusplus) \
	 || (defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))

/* A type that is properly aligned for any stack member.  */
union yyalloc
{
  short yyss;
  YYSTYPE yyvs;
  };

/* The size of the maximum gap between one aligned stack and the next.  */
# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)

/* The size of an array large to enough to hold all stacks, each with
   N elements.  */
# define YYSTACK_BYTES(N) \
     ((N) * (sizeof (short) + sizeof (YYSTYPE))				\
      + YYSTACK_GAP_MAXIMUM)

/* Copy COUNT objects from FROM to TO.  The source and destination do
   not overlap.  */
# ifndef YYCOPY
#  if defined (__GNUC__) && 1 < __GNUC__
#   define YYCOPY(To, From, Count) \
      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
#  else
#   define YYCOPY(To, From, Count)		\
      do					\
	{					\
	  register YYSIZE_T yyi;		\
	  for (yyi = 0; yyi < (Count); yyi++)	\
	    (To)[yyi] = (From)[yyi];		\
	}					\
      while (0)
#  endif
# endif

/* Relocate STACK from its old location to the new one.  The
   local variables YYSIZE and YYSTACKSIZE give the old and new number of
   elements in the stack, and YYPTR gives the new location of the
   stack.  Advance YYPTR to a properly aligned location for the next
   stack.  */
# define YYSTACK_RELOCATE(Stack)					\
    do									\
      {									\
	YYSIZE_T yynewbytes;						\
	YYCOPY (&yyptr->Stack, Stack, yysize);				\
	Stack = &yyptr->Stack;						\
	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
	yyptr += yynewbytes / sizeof (*yyptr);				\
      }									\
    while (0)

#endif

#if defined (__STDC__) || defined (__cplusplus)
   typedef signed char yysigned_char;
#else
   typedef short yysigned_char;
#endif

/* YYFINAL -- State number of the termination state. */
#define YYFINAL  40
/* YYLAST -- Last index in YYTABLE.  */
#define YYLAST   443

/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS  68
/* YYNNTS -- Number of nonterminals. */
#define YYNNTS  13
/* YYNRULES -- Number of rules. */
#define YYNRULES  69
/* YYNRULES -- Number of states. */
#define YYNSTATES  122

/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
#define YYUNDEFTOK  2
#define YYMAXUTOK   299

#define YYTRANSLATE(YYX) 						\
  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)

/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
static const unsigned char yytranslate[] =
{
       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,    62,     2,     2,     2,    54,    39,     2,
      60,    64,    52,    50,    31,    51,    58,    53,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,    67,     2,
      43,    33,    44,    34,    49,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,    59,     2,    63,    38,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,    65,    37,    66,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
      15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
      25,    26,    27,    28,    29,    30,    32,    35,    36,    40,
      41,    42,    45,    46,    47,    48,    55,    56,    57,    61
};

#if YYDEBUG
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
   YYRHS.  */
static const unsigned char yyprhs[] =
{
       0,     0,     3,     5,     7,     9,    11,    15,    18,    21,
      24,    27,    30,    33,    36,    39,    43,    48,    52,    57,
      58,    64,    66,    67,    69,    73,    75,    80,    85,    89,
      93,    97,   101,   105,   109,   113,   117,   121,   125,   129,
     133,   137,   141,   145,   149,   153,   157,   161,   165,   171,
     175,   179,   181,   183,   185,   187,   189,   191,   196,   201,
     203,   207,   209,   211,   213,   216,   218,   221,   223,   225
};

/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const yysigned_char yyrhs[] =
{
      69,     0,    -1,    71,    -1,    70,    -1,    79,    -1,    72,
      -1,    71,    31,    72,    -1,    52,    72,    -1,    39,    72,
      -1,    51,    72,    -1,    50,    72,    -1,    62,    72,    -1,
      38,    72,    -1,    72,    56,    -1,    72,    55,    -1,    72,
      58,    80,    -1,    72,    58,    80,    10,    -1,    72,    58,
      10,    -1,    72,    59,    71,    63,    -1,    -1,    72,    60,
      73,    75,    64,    -1,    65,    -1,    -1,    72,    -1,    75,
      31,    72,    -1,    66,    -1,    74,    79,    76,    72,    -1,
      79,    60,    72,    64,    -1,    60,    71,    64,    -1,    72,
      49,    72,    -1,    72,    52,    72,    -1,    72,    53,    72,
      -1,    72,    54,    72,    -1,    72,    50,    72,    -1,    72,
      51,    72,    -1,    72,    48,    72,    -1,    72,    47,    72,
      -1,    72,    42,    72,    -1,    72,    41,    72,    -1,    72,
      46,    72,    -1,    72,    45,    72,    -1,    72,    43,    72,
      -1,    72,    44,    72,    -1,    72,    39,    72,    -1,    72,
      38,    72,    -1,    72,    37,    72,    -1,    72,    36,    72,
      -1,    72,    35,    72,    -1,    72,    34,    72,    67,    72,
      -1,    72,    33,    72,    -1,    72,    30,    72,    -1,     3,
      -1,     7,    -1,    11,    -1,     4,    -1,    78,    -1,    29,
      -1,    18,    60,    79,    64,    -1,    18,    60,    72,    64,
      -1,     6,    -1,    77,    50,     6,    -1,    77,    -1,    12,
      -1,    13,    -1,    80,    26,    -1,    80,    -1,    52,    79,
      -1,     9,    -1,    28,    -1,     8,    -1
};

/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
static const unsigned short yyrline[] =
{
       0,   237,   237,   238,   241,   248,   249,   254,   258,   262,
     266,   270,   274,   278,   282,   288,   294,   301,   311,   318,
     315,   325,   329,   332,   336,   340,   344,   350,   356,   362,
     366,   370,   374,   378,   382,   386,   390,   394,   398,   402,
     406,   410,   414,   418,   422,   426,   430,   434,   438,   442,
     446,   452,   459,   468,   481,   488,   491,   497,   509,   516,
     533,   551,   562,   568,   574,   590,   645,   647,   654,   667
};
#endif

#if YYDEBUG || YYERROR_VERBOSE
/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
   First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const yytname[] =
{
  "$end", "error", "$undefined", "INT", "FLOAT", "RAW_STRING", "STRING",
  "CHAR", "NAME", "TYPENAME", "COMPLETE", "NAME_OR_INT", "TRUE_KEYWORD",
  "FALSE_KEYWORD", "STRUCT_KEYWORD", "INTERFACE_KEYWORD", "TYPE_KEYWORD",
  "CHAN_KEYWORD", "SIZEOF_KEYWORD", "LEN_KEYWORD", "CAP_KEYWORD",
  "NEW_KEYWORD", "IOTA_KEYWORD", "NIL_KEYWORD", "CONST_KEYWORD",
  "DOTDOTDOT", "ENTRY", "ERROR", "BYTE_KEYWORD", "DOLLAR_VARIABLE",
  "ASSIGN_MODIFY", "','", "ABOVE_COMMA", "'='", "'?'", "OROR", "ANDAND",
  "'|'", "'^'", "'&'", "ANDNOT", "NOTEQUAL", "EQUAL", "'<'", "'>'", "GEQ",
  "LEQ", "RSH", "LSH", "'@'", "'+'", "'-'", "'*'", "'/'", "'%'",
  "DECREMENT", "INCREMENT", "UNARY", "'.'", "'['", "'('", "LEFT_ARROW",
  "'!'", "']'", "')'", "'{'", "'}'", "':'", "$accept", "start", "type_exp",
  "exp1", "exp", "@1", "lcurly", "arglist", "rcurly", "string_exp",
  "variable", "type", "name_not_typename", 0
};
#endif

# ifdef YYPRINT
/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
   token YYLEX-NUM.  */
static const unsigned short yytoknum[] =
{
       0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
     265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
     275,   276,   277,   278,   279,   280,   281,   282,   283,   284,
     285,    44,   286,    61,    63,   287,   288,   124,    94,    38,
     289,   290,   291,    60,    62,   292,   293,   294,   295,    64,
      43,    45,    42,    47,    37,   296,   297,   298,    46,    91,
      40,   299,    33,    93,    41,   123,   125,    58
};
# endif

/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
static const unsigned char yyr1[] =
{
       0,    68,    69,    69,    70,    71,    71,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    73,
      72,    74,    75,    75,    75,    76,    72,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    77,
      77,    72,    72,    72,    78,    78,    79,    79,    79,    80
};

/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
static const unsigned char yyr2[] =
{
       0,     2,     1,     1,     1,     1,     3,     2,     2,     2,
       2,     2,     2,     2,     2,     3,     4,     3,     4,     0,
       5,     1,     0,     1,     3,     1,     4,     4,     3,     3,
       3,     3,     3,     3,     3,     3,     3,     3,     3,     3,
       3,     3,     3,     3,     3,     3,     3,     3,     5,     3,
       3,     1,     1,     1,     1,     1,     1,     4,     4,     1,
       3,     1,     1,     1,     2,     1,     2,     1,     1,     1
};

/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
   STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
   means the default is an error.  */
static const unsigned char yydefact[] =
{
       0,    51,    54,    59,    52,    69,    67,    53,    62,    63,
       0,    68,    56,     0,     0,     0,     0,     0,     0,     0,
      21,     0,     3,     2,     5,     0,    61,    55,     4,    65,
       0,    12,     0,     8,    10,     9,     7,    66,     0,    11,
       1,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,    14,    13,     0,     0,    19,     0,
       0,     0,     0,    64,     0,     0,    28,     6,    50,    49,
       0,    47,    46,    45,    44,    43,    38,    37,    41,    42,
      40,    39,    36,    35,    29,    33,    34,    30,    31,    32,
      17,    15,     0,    22,    66,    25,     0,    60,     0,    58,
      57,     0,    16,    18,    23,     0,    26,    27,    48,     0,
      20,    24
};

/* YYDEFGOTO[NTERM-NUM]. */
static const yysigned_char yydefgoto[] =
{
      -1,    21,    22,    23,    24,   103,    25,   115,   106,    26,
      27,    32,    29
};

/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
   STATE-NUM.  */
#define YYPACT_NINF -56
static const short yypact[] =
{
      49,   -56,   -56,   -56,   -56,   -56,   -56,   -56,   -56,   -56,
     -44,   -56,   -56,    49,    49,    49,    49,    49,    49,    49,
     -56,    23,   -56,    34,   187,    45,   -23,   -56,     6,    46,
      49,   -48,     6,   -48,   -48,   -48,   -48,     6,    38,   -48,
     -56,    49,    49,    49,    49,    49,    49,    49,    49,    49,
      49,    49,    49,    49,    49,    49,    49,    49,    49,    49,
      49,    49,    49,    49,   -56,   -56,     5,    49,   -56,    45,
       8,    65,    49,   -56,   123,   -55,   -56,   187,   187,   187,
      88,   239,   263,   286,   308,   328,   346,   346,   360,   360,
     360,   360,   372,   372,   383,   -34,   -34,   -48,   -48,   -48,
     -56,    69,    33,    49,   -56,   -56,    49,   -56,   155,   -56,
     -56,    49,   -56,   -56,   187,    39,   -48,   -56,   214,    49,
     -56,   187
};

/* YYPGOTO[NTERM-NUM].  */
static const yysigned_char yypgoto[] =
{
     -56,   -56,   -56,    -4,   -13,   -56,   -56,   -56,   -56,   -56,
     -56,    51,     9
};

/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
   positive, shift that token.  If negative, reduce the rule which
   number is the opposite.  If zero, do what YYDEFACT says.
   If YYTABLE_NINF, syntax error.  */
#define YYTABLE_NINF -1
static const unsigned char yytable[] =
{
      31,    33,    34,    35,    36,    72,    39,    64,    65,   110,
      66,    67,    68,     5,    38,   100,    30,    74,    61,    62,
      63,    64,    65,    40,    66,    67,    68,    71,    77,    78,
      79,    80,    81,    82,    83,    84,    85,    86,    87,    88,
      89,    90,    91,    92,    93,    94,    95,    96,    97,    98,
      99,    28,     1,     2,     6,     3,     4,     5,     6,   108,
       7,     8,     9,   102,    41,    41,    72,    10,    37,    41,
     119,   107,    73,    11,   105,   101,    70,    11,    12,   112,
       0,    75,     0,     0,     0,     0,     0,    13,    14,     0,
     114,     0,     0,   116,     0,     0,   113,    69,   118,    15,
      16,    17,    76,   120,     0,     0,   121,     0,     0,    18,
       0,    19,     0,     0,    20,     0,     0,     0,    42,     0,
     104,    43,    44,    45,    46,    47,    48,    49,     0,    50,
      51,    52,    53,    54,    55,    56,    57,    58,    59,    60,
      61,    62,    63,    64,    65,     0,    66,    67,    68,     0,
       0,     0,     0,    42,     0,   111,    43,    44,    45,    46,
      47,    48,    49,     0,    50,    51,    52,    53,    54,    55,
      56,    57,    58,    59,    60,    61,    62,    63,    64,    65,
       0,    66,    67,    68,     0,    42,     0,   109,    43,    44,
      45,    46,    47,    48,    49,     0,    50,    51,    52,    53,
      54,    55,    56,    57,    58,    59,    60,    61,    62,    63,
      64,    65,     0,    66,    67,    68,     0,    42,     0,   117,
      43,    44,    45,    46,    47,    48,    49,     0,    50,    51,
      52,    53,    54,    55,    56,    57,    58,    59,    60,    61,
      62,    63,    64,    65,     0,    66,    67,    68,    44,    45,
      46,    47,    48,    49,     0,    50,    51,    52,    53,    54,
      55,    56,    57,    58,    59,    60,    61,    62,    63,    64,
      65,     0,    66,    67,    68,    46,    47,    48,    49,     0,
      50,    51,    52,    53,    54,    55,    56,    57,    58,    59,
      60,    61,    62,    63,    64,    65,     0,    66,    67,    68,
      47,    48,    49,     0,    50,    51,    52,    53,    54,    55,
      56,    57,    58,    59,    60,    61,    62,    63,    64,    65,
       0,    66,    67,    68,    48,    49,     0,    50,    51,    52,
      53,    54,    55,    56,    57,    58,    59,    60,    61,    62,
      63,    64,    65,     0,    66,    67,    68,    49,     0,    50,
      51,    52,    53,    54,    55,    56,    57,    58,    59,    60,
      61,    62,    63,    64,    65,     0,    66,    67,    68,    50,
      51,    52,    53,    54,    55,    56,    57,    58,    59,    60,
      61,    62,    63,    64,    65,     0,    66,    67,    68,    52,
      53,    54,    55,    56,    57,    58,    59,    60,    61,    62,
      63,    64,    65,     0,    66,    67,    68,    56,    57,    58,
      59,    60,    61,    62,    63,    64,    65,     0,    66,    67,
      68,    58,    59,    60,    61,    62,    63,    64,    65,     0,
      66,    67,    68,    59,    60,    61,    62,    63,    64,    65,
       0,    66,    67,    68
};

static const yysigned_char yycheck[] =
{
      13,    14,    15,    16,    17,    60,    19,    55,    56,    64,
      58,    59,    60,     8,    18,    10,    60,    30,    52,    53,
      54,    55,    56,     0,    58,    59,    60,    50,    41,    42,
      43,    44,    45,    46,    47,    48,    49,    50,    51,    52,
      53,    54,    55,    56,    57,    58,    59,    60,    61,    62,
      63,     0,     3,     4,     9,     6,     7,     8,     9,    72,
      11,    12,    13,    67,    31,    31,    60,    18,    17,    31,
      31,     6,    26,    28,    66,    66,    25,    28,    29,    10,
      -1,    30,    -1,    -1,    -1,    -1,    -1,    38,    39,    -1,
     103,    -1,    -1,   106,    -1,    -1,    63,    52,   111,    50,
      51,    52,    64,    64,    -1,    -1,   119,    -1,    -1,    60,
      -1,    62,    -1,    -1,    65,    -1,    -1,    -1,    30,    -1,
      69,    33,    34,    35,    36,    37,    38,    39,    -1,    41,
      42,    43,    44,    45,    46,    47,    48,    49,    50,    51,
      52,    53,    54,    55,    56,    -1,    58,    59,    60,    -1,
      -1,    -1,    -1,    30,    -1,    67,    33,    34,    35,    36,
      37,    38,    39,    -1,    41,    42,    43,    44,    45,    46,
      47,    48,    49,    50,    51,    52,    53,    54,    55,    56,
      -1,    58,    59,    60,    -1,    30,    -1,    64,    33,    34,
      35,    36,    37,    38,    39,    -1,    41,    42,    43,    44,
      45,    46,    47,    48,    49,    50,    51,    52,    53,    54,
      55,    56,    -1,    58,    59,    60,    -1,    30,    -1,    64,
      33,    34,    35,    36,    37,    38,    39,    -1,    41,    42,
      43,    44,    45,    46,    47,    48,    49,    50,    51,    52,
      53,    54,    55,    56,    -1,    58,    59,    60,    34,    35,
      36,    37,    38,    39,    -1,    41,    42,    43,    44,    45,
      46,    47,    48,    49,    50,    51,    52,    53,    54,    55,
      56,    -1,    58,    59,    60,    36,    37,    38,    39,    -1,
      41,    42,    43,    44,    45,    46,    47,    48,    49,    50,
      51,    52,    53,    54,    55,    56,    -1,    58,    59,    60,
      37,    38,    39,    -1,    41,    42,    43,    44,    45,    46,
      47,    48,    49,    50,    51,    52,    53,    54,    55,    56,
      -1,    58,    59,    60,    38,    39,    -1,    41,    42,    43,
      44,    45,    46,    47,    48,    49,    50,    51,    52,    53,
      54,    55,    56,    -1,    58,    59,    60,    39,    -1,    41,
      42,    43,    44,    45,    46,    47,    48,    49,    50,    51,
      52,    53,    54,    55,    56,    -1,    58,    59,    60,    41,
      42,    43,    44,    45,    46,    47,    48,    49,    50,    51,
      52,    53,    54,    55,    56,    -1,    58,    59,    60,    43,
      44,    45,    46,    47,    48,    49,    50,    51,    52,    53,
      54,    55,    56,    -1,    58,    59,    60,    47,    48,    49,
      50,    51,    52,    53,    54,    55,    56,    -1,    58,    59,
      60,    49,    50,    51,    52,    53,    54,    55,    56,    -1,
      58,    59,    60,    50,    51,    52,    53,    54,    55,    56,
      -1,    58,    59,    60
};

/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
   symbol of state STATE-NUM.  */
static const unsigned char yystos[] =
{
       0,     3,     4,     6,     7,     8,     9,    11,    12,    13,
      18,    28,    29,    38,    39,    50,    51,    52,    60,    62,
      65,    69,    70,    71,    72,    74,    77,    78,    79,    80,
      60,    72,    79,    72,    72,    72,    72,    79,    71,    72,
       0,    31,    30,    33,    34,    35,    36,    37,    38,    39,
      41,    42,    43,    44,    45,    46,    47,    48,    49,    50,
      51,    52,    53,    54,    55,    56,    58,    59,    60,    52,
      79,    50,    60,    26,    72,    79,    64,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    72,
      72,    72,    72,    72,    72,    72,    72,    72,    72,    72,
      10,    80,    71,    73,    79,    66,    76,     6,    72,    64,
      64,    67,    10,    63,    72,    75,    72,    64,    72,    31,
      64,    72
};

#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
# define YYSIZE_T __SIZE_TYPE__
#endif
#if ! defined (YYSIZE_T) && defined (size_t)
# define YYSIZE_T size_t
#endif
#if ! defined (YYSIZE_T)
# if defined (__STDC__) || defined (__cplusplus)
#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  define YYSIZE_T size_t
# endif
#endif
#if ! defined (YYSIZE_T)
# define YYSIZE_T unsigned int
#endif

#define yyerrok		(yyerrstatus = 0)
#define yyclearin	(yychar = YYEMPTY)
#define YYEMPTY		(-2)
#define YYEOF		0

#define YYACCEPT	goto yyacceptlab
#define YYABORT		goto yyabortlab
#define YYERROR		goto yyerrorlab


/* Like YYERROR except do call yyerror.  This remains here temporarily
   to ease the transition to the new meaning of YYERROR, for GCC.
   Once GCC version 2 has supplanted version 1, this can go.  */

#define YYFAIL		goto yyerrlab

#define YYRECOVERING()  (!!yyerrstatus)

#define YYBACKUP(Token, Value)					\
do								\
  if (yychar == YYEMPTY && yylen == 1)				\
    {								\
      yychar = (Token);						\
      yylval = (Value);						\
      yytoken = YYTRANSLATE (yychar);				\
      YYPOPSTACK;						\
      goto yybackup;						\
    }								\
  else								\
    { 								\
      yyerror ("syntax error: cannot back up");\
      YYERROR;							\
    }								\
while (0)

#define YYTERROR	1
#define YYERRCODE	256

/* YYLLOC_DEFAULT -- Compute the default location (before the actions
   are run).  */

#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N)		\
   ((Current).first_line   = (Rhs)[1].first_line,	\
    (Current).first_column = (Rhs)[1].first_column,	\
    (Current).last_line    = (Rhs)[N].last_line,	\
    (Current).last_column  = (Rhs)[N].last_column)
#endif

/* YYLEX -- calling `yylex' with the right arguments.  */

#ifdef YYLEX_PARAM
# define YYLEX yylex (YYLEX_PARAM)
#else
# define YYLEX yylex ()
#endif

/* Enable debugging if requested.  */
#if YYDEBUG

# ifndef YYFPRINTF
#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
#  define YYFPRINTF fprintf
# endif

# define YYDPRINTF(Args)			\
do {						\
  if (yydebug)					\
    YYFPRINTF Args;				\
} while (0)

# define YYDSYMPRINT(Args)			\
do {						\
  if (yydebug)					\
    yysymprint Args;				\
} while (0)

# define YYDSYMPRINTF(Title, Token, Value, Location)		\
do {								\
  if (yydebug)							\
    {								\
      YYFPRINTF (stderr, "%s ", Title);				\
      yysymprint (stderr, 					\
                  Token, Value);	\
      YYFPRINTF (stderr, "\n");					\
    }								\
} while (0)

/*------------------------------------------------------------------.
| yy_stack_print -- Print the state stack from its BOTTOM up to its |
| TOP (included).                                                   |
`------------------------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yy_stack_print (short *bottom, short *top)
#else
static void
yy_stack_print (bottom, top)
    short *bottom;
    short *top;
#endif
{
  YYFPRINTF (stderr, "Stack now");
  for (/* Nothing. */; bottom <= top; ++bottom)
    YYFPRINTF (stderr, " %d", *bottom);
  YYFPRINTF (stderr, "\n");
}

# define YY_STACK_PRINT(Bottom, Top)				\
do {								\
  if (yydebug)							\
    yy_stack_print ((Bottom), (Top));				\
} while (0)


/*------------------------------------------------.
| Report that the YYRULE is going to be reduced.  |
`------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yy_reduce_print (int yyrule)
#else
static void
yy_reduce_print (yyrule)
    int yyrule;
#endif
{
  int yyi;
  unsigned int yylno = yyrline[yyrule];
  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
             yyrule - 1, yylno);
  /* Print the symbols being reduced, and their result.  */
  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
    YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
  YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
}

# define YY_REDUCE_PRINT(Rule)		\
do {					\
  if (yydebug)				\
    yy_reduce_print (Rule);		\
} while (0)

/* Nonzero means print parse trace.  It is left uninitialized so that
   multiple parsers can coexist.  */
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
# define YYDSYMPRINT(Args)
# define YYDSYMPRINTF(Title, Token, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */


/* YYINITDEPTH -- initial size of the parser's stacks.  */
#ifndef	YYINITDEPTH
# define YYINITDEPTH 200
#endif

/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
   if the built-in stack extension method is used).

   Do not make this value too large; the results are undefined if
   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
   evaluated with infinite-precision integer arithmetic.  */

#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
# define YYMAXDEPTH 10000
#endif


#if YYERROR_VERBOSE

# ifndef yystrlen
#  if defined (__GLIBC__) && defined (_STRING_H)
#   define yystrlen strlen
#  else
/* Return the length of YYSTR.  */
static YYSIZE_T
#   if defined (__STDC__) || defined (__cplusplus)
yystrlen (const char *yystr)
#   else
yystrlen (yystr)
     const char *yystr;
#   endif
{
  register const char *yys = yystr;

  while (*yys++ != '\0')
    continue;

  return yys - yystr - 1;
}
#  endif
# endif

# ifndef yystpcpy
#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
#   define yystpcpy stpcpy
#  else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
   YYDEST.  */
static char *
#   if defined (__STDC__) || defined (__cplusplus)
yystpcpy (char *yydest, const char *yysrc)
#   else
yystpcpy (yydest, yysrc)
     char *yydest;
     const char *yysrc;
#   endif
{
  register char *yyd = yydest;
  register const char *yys = yysrc;

  while ((*yyd++ = *yys++) != '\0')
    continue;

  return yyd - 1;
}
#  endif
# endif

#endif /* !YYERROR_VERBOSE */


#if YYDEBUG
/*--------------------------------.
| Print this symbol on YYOUTPUT.  |
`--------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yysymprint (FILE *yyoutput, int yytype, YYSTYPE *yyvaluep)
#else
static void
yysymprint (yyoutput, yytype, yyvaluep)
    FILE *yyoutput;
    int yytype;
    YYSTYPE *yyvaluep;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) yyvaluep;

  if (yytype < YYNTOKENS)
    {
      YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
# ifdef YYPRINT
      YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
# endif
    }
  else
    YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);

  switch (yytype)
    {
      default:
        break;
    }
  YYFPRINTF (yyoutput, ")");
}

#endif /* ! YYDEBUG */
/*-----------------------------------------------.
| Release the memory associated to this symbol.  |
`-----------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yydestruct (int yytype, YYSTYPE *yyvaluep)
#else
static void
yydestruct (yytype, yyvaluep)
    int yytype;
    YYSTYPE *yyvaluep;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) yyvaluep;

  switch (yytype)
    {

      default:
        break;
    }
}


/* Prevent warnings from -Wmissing-prototypes.  */

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM);
# else
int yyparse ();
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int yyparse (void);
#else
int yyparse ();
#endif
#endif /* ! YYPARSE_PARAM */


/* The lookahead symbol.  */
int yychar;

/* The semantic value of the lookahead symbol.  */
YYSTYPE yylval;

/* Number of syntax errors so far.  */
int yynerrs;


/*----------.
| yyparse.  |
`----------*/

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM)
# else
int yyparse (YYPARSE_PARAM)
  void *YYPARSE_PARAM;
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int
yyparse (void)
#else
int
yyparse ()

#endif
#endif
{
  
  register int yystate;
  register int yyn;
  int yyresult;
  /* Number of tokens to shift before error messages enabled.  */
  int yyerrstatus;
  /* Lookahead token as an internal (translated) token number.  */
  int yytoken = 0;

  /* Three stacks and their tools:
     `yyss': related to states,
     `yyvs': related to semantic values,
     `yyls': related to locations.

     Refer to the stacks thru separate pointers, to allow yyoverflow
     to xreallocate them elsewhere.  */

  /* The state stack.  */
  short	yyssa[YYINITDEPTH];
  short *yyss = yyssa;
  register short *yyssp;

  /* The semantic value stack.  */
  YYSTYPE yyvsa[YYINITDEPTH];
  YYSTYPE *yyvs = yyvsa;
  register YYSTYPE *yyvsp;


#define YYPOPSTACK   (yyvsp--, yyssp--)

  YYSIZE_T yystacksize = YYINITDEPTH;

  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE yyval;


  /* When reducing, the number of symbols on the RHS of the reduced
     rule.  */
  int yylen;

  YYDPRINTF ((stderr, "Starting parse\n"));

  yystate = 0;
  yyerrstatus = 0;
  yynerrs = 0;
  yychar = YYEMPTY;		/* Cause a token to be read.  */

  /* Initialize stack pointers.
     Waste one element of value and location stack
     so that they stay on the same level as the state stack.
     The wasted elements are never initialized.  */

  yyssp = yyss;
  yyvsp = yyvs;

  goto yysetstate;

/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate.  |
`------------------------------------------------------------*/
 yynewstate:
  /* In all cases, when you get here, the value and location stacks
     have just been pushed. so pushing a state here evens the stacks.
     */
  yyssp++;

 yysetstate:
  *yyssp = yystate;

  if (yyss + yystacksize - 1 <= yyssp)
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYSIZE_T yysize = yyssp - yyss + 1;

#ifdef yyoverflow
      {
	/* Give user a chance to xreallocate the stack. Use copies of
	   these so that the &'s don't force the real ones into
	   memory.  */
	YYSTYPE *yyvs1 = yyvs;
	short *yyss1 = yyss;


	/* Each stack pointer address is followed by the size of the
	   data in use in that stack, in bytes.  This used to be a
	   conditional around just the two extra args, but that might
	   be undefined if yyoverflow is a macro.  */
	yyoverflow ("parser stack overflow",
		    &yyss1, yysize * sizeof (*yyssp),
		    &yyvs1, yysize * sizeof (*yyvsp),

		    &yystacksize);

	yyss = yyss1;
	yyvs = yyvs1;
      }
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
      goto yyoverflowlab;
# else
      /* Extend the stack our own way.  */
      if (YYMAXDEPTH <= yystacksize)
	goto yyoverflowlab;
      yystacksize *= 2;
      if (YYMAXDEPTH < yystacksize)
	yystacksize = YYMAXDEPTH;

      {
	short *yyss1 = yyss;
	union yyalloc *yyptr =
	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
	if (! yyptr)
	  goto yyoverflowlab;
	YYSTACK_RELOCATE (yyss);
	YYSTACK_RELOCATE (yyvs);

#  undef YYSTACK_RELOCATE
	if (yyss1 != yyssa)
	  YYSTACK_FREE (yyss1);
      }
# endif
#endif /* no yyoverflow */

      yyssp = yyss + yysize - 1;
      yyvsp = yyvs + yysize - 1;


      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
		  (unsigned long int) yystacksize));

      if (yyss + yystacksize - 1 <= yyssp)
	YYABORT;
    }

  YYDPRINTF ((stderr, "Entering state %d\n", yystate));

  goto yybackup;

/*-----------.
| yybackup.  |
`-----------*/
yybackup:

/* Do appropriate processing given the current state.  */
/* Read a lookahead token if we need one and don't already have one.  */
/* yyresume: */

  /* First try to decide what to do without reference to lookahead token.  */

  yyn = yypact[yystate];
  if (yyn == YYPACT_NINF)
    goto yydefault;

  /* Not known => get a lookahead token if don't already have one.  */

  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
  if (yychar == YYEMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token: "));
      yychar = YYLEX;
    }

  if (yychar <= YYEOF)
    {
      yychar = yytoken = YYEOF;
      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else
    {
      yytoken = YYTRANSLATE (yychar);
      YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
    }

  /* If the proper action on seeing token YYTOKEN is to reduce or to
     detect an error, take that action.  */
  yyn += yytoken;
  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
    goto yydefault;
  yyn = yytable[yyn];
  if (yyn <= 0)
    {
      if (yyn == 0 || yyn == YYTABLE_NINF)
	goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */
  YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));

  /* Discard the token being shifted unless it is eof.  */
  if (yychar != YYEOF)
    yychar = YYEMPTY;

  *++yyvsp = yylval;


  /* Count tokens shifted since error; after three, turn off error
     status.  */
  if (yyerrstatus)
    yyerrstatus--;

  yystate = yyn;
  goto yynewstate;


/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state.  |
`-----------------------------------------------------------*/
yydefault:
  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;
  goto yyreduce;


/*-----------------------------.
| yyreduce -- Do a reduction.  |
`-----------------------------*/
yyreduce:
  /* yyn is the number of a rule to reduce with.  */
  yylen = yyr2[yyn];

  /* If YYLEN is nonzero, implement the default value of the action:
     `$$ = $1'.

     Otherwise, the following line sets YYVAL to garbage.
     This behavior is undocumented and Bison
     users should not rely upon it.  Assigning to YYVAL
     unconditionally makes the parser a bit smaller, and it avoids a
     GCC warning that YYVAL may be used uninitialized.  */
  yyval = yyvsp[1-yylen];


  YY_REDUCE_PRINT (yyn);
  switch (yyn)
    {
        case 4:
#line 242 "go-exp.y"
    { write_exp_elt_opcode(OP_TYPE);
			  write_exp_elt_type(yyvsp[0].tval);
			  write_exp_elt_opcode(OP_TYPE); }
    break;

  case 6:
#line 250 "go-exp.y"
    { write_exp_elt_opcode (BINOP_COMMA); }
    break;

  case 7:
#line 255 "go-exp.y"
    { write_exp_elt_opcode (UNOP_IND); }
    break;

  case 8:
#line 259 "go-exp.y"
    { write_exp_elt_opcode (UNOP_ADDR); }
    break;

  case 9:
#line 263 "go-exp.y"
    { write_exp_elt_opcode (UNOP_NEG); }
    break;

  case 10:
#line 267 "go-exp.y"
    { write_exp_elt_opcode (UNOP_PLUS); }
    break;

  case 11:
#line 271 "go-exp.y"
    { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
    break;

  case 12:
#line 275 "go-exp.y"
    { write_exp_elt_opcode (UNOP_COMPLEMENT); }
    break;

  case 13:
#line 279 "go-exp.y"
    { write_exp_elt_opcode (UNOP_POSTINCREMENT); }
    break;

  case 14:
#line 283 "go-exp.y"
    { write_exp_elt_opcode (UNOP_POSTDECREMENT); }
    break;

  case 15:
#line 289 "go-exp.y"
    { write_exp_elt_opcode (STRUCTOP_STRUCT);
			  write_exp_string (yyvsp[0].ssym.stoken);
			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
    break;

  case 16:
#line 295 "go-exp.y"
    { mark_struct_expression ();
			  write_exp_elt_opcode (STRUCTOP_STRUCT);
			  write_exp_string (yyvsp[-1].ssym.stoken);
			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
    break;

  case 17:
#line 302 "go-exp.y"
    { struct stoken s;
			  mark_struct_expression ();
			  write_exp_elt_opcode (STRUCTOP_STRUCT);
			  s.ptr = "";
			  s.length = 0;
			  write_exp_string (s);
			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
    break;

  case 18:
#line 312 "go-exp.y"
    { write_exp_elt_opcode (BINOP_SUBSCRIPT); }
    break;

  case 19:
#line 318 "go-exp.y"
    { start_arglist (); }
    break;

  case 20:
#line 320 "go-exp.y"
    { write_exp_elt_opcode (OP_FUNCALL);
			  write_exp_elt_longcst ((LONGEST) end_arglist ());
			  write_exp_elt_opcode (OP_FUNCALL); }
    break;

  case 21:
#line 326 "go-exp.y"
    { start_arglist (); }
    break;

  case 23:
#line 333 "go-exp.y"
    { arglist_len = 1; }
    break;

  case 24:
#line 337 "go-exp.y"
    { arglist_len++; }
    break;

  case 25:
#line 341 "go-exp.y"
    { yyval.lval = end_arglist () - 1; }
    break;

  case 26:
#line 345 "go-exp.y"
    { write_exp_elt_opcode (UNOP_MEMVAL);
			  write_exp_elt_type (yyvsp[-2].tval);
			  write_exp_elt_opcode (UNOP_MEMVAL); }
    break;

  case 27:
#line 351 "go-exp.y"
    { write_exp_elt_opcode (UNOP_CAST);
			  write_exp_elt_type (yyvsp[-3].tval);
			  write_exp_elt_opcode (UNOP_CAST); }
    break;

  case 28:
#line 357 "go-exp.y"
    { }
    break;

  case 29:
#line 363 "go-exp.y"
    { write_exp_elt_opcode (BINOP_REPEAT); }
    break;

  case 30:
#line 367 "go-exp.y"
    { write_exp_elt_opcode (BINOP_MUL); }
    break;

  case 31:
#line 371 "go-exp.y"
    { write_exp_elt_opcode (BINOP_DIV); }
    break;

  case 32:
#line 375 "go-exp.y"
    { write_exp_elt_opcode (BINOP_REM); }
    break;

  case 33:
#line 379 "go-exp.y"
    { write_exp_elt_opcode (BINOP_ADD); }
    break;

  case 34:
#line 383 "go-exp.y"
    { write_exp_elt_opcode (BINOP_SUB); }
    break;

  case 35:
#line 387 "go-exp.y"
    { write_exp_elt_opcode (BINOP_LSH); }
    break;

  case 36:
#line 391 "go-exp.y"
    { write_exp_elt_opcode (BINOP_RSH); }
    break;

  case 37:
#line 395 "go-exp.y"
    { write_exp_elt_opcode (BINOP_EQUAL); }
    break;

  case 38:
#line 399 "go-exp.y"
    { write_exp_elt_opcode (BINOP_NOTEQUAL); }
    break;

  case 39:
#line 403 "go-exp.y"
    { write_exp_elt_opcode (BINOP_LEQ); }
    break;

  case 40:
#line 407 "go-exp.y"
    { write_exp_elt_opcode (BINOP_GEQ); }
    break;

  case 41:
#line 411 "go-exp.y"
    { write_exp_elt_opcode (BINOP_LESS); }
    break;

  case 42:
#line 415 "go-exp.y"
    { write_exp_elt_opcode (BINOP_GTR); }
    break;

  case 43:
#line 419 "go-exp.y"
    { write_exp_elt_opcode (BINOP_BITWISE_AND); }
    break;

  case 44:
#line 423 "go-exp.y"
    { write_exp_elt_opcode (BINOP_BITWISE_XOR); }
    break;

  case 45:
#line 427 "go-exp.y"
    { write_exp_elt_opcode (BINOP_BITWISE_IOR); }
    break;

  case 46:
#line 431 "go-exp.y"
    { write_exp_elt_opcode (BINOP_LOGICAL_AND); }
    break;

  case 47:
#line 435 "go-exp.y"
    { write_exp_elt_opcode (BINOP_LOGICAL_OR); }
    break;

  case 48:
#line 439 "go-exp.y"
    { write_exp_elt_opcode (TERNOP_COND); }
    break;

  case 49:
#line 443 "go-exp.y"
    { write_exp_elt_opcode (BINOP_ASSIGN); }
    break;

  case 50:
#line 447 "go-exp.y"
    { write_exp_elt_opcode (BINOP_ASSIGN_MODIFY);
			  write_exp_elt_opcode (yyvsp[-1].opcode);
			  write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); }
    break;

  case 51:
#line 453 "go-exp.y"
    { write_exp_elt_opcode (OP_LONG);
			  write_exp_elt_type (yyvsp[0].typed_val_int.type);
			  write_exp_elt_longcst ((LONGEST)(yyvsp[0].typed_val_int.val));
			  write_exp_elt_opcode (OP_LONG); }
    break;

  case 52:
#line 460 "go-exp.y"
    {
			  struct stoken_vector vec;
			  vec.len = 1;
			  vec.tokens = &yyvsp[0].tsval;
			  write_exp_string_vector (yyvsp[0].tsval.type, &vec);
			}
    break;

  case 53:
#line 469 "go-exp.y"
    { YYSTYPE val;
			  parse_number (yyvsp[0].ssym.stoken.ptr, yyvsp[0].ssym.stoken.length,
					0, &val);
			  write_exp_elt_opcode (OP_LONG);
			  write_exp_elt_type (val.typed_val_int.type);
			  write_exp_elt_longcst ((LONGEST)
						 val.typed_val_int.val);
			  write_exp_elt_opcode (OP_LONG);
			}
    break;

  case 54:
#line 482 "go-exp.y"
    { write_exp_elt_opcode (OP_DOUBLE);
			  write_exp_elt_type (yyvsp[0].typed_val_float.type);
			  write_exp_elt_dblcst (yyvsp[0].typed_val_float.dval);
			  write_exp_elt_opcode (OP_DOUBLE); }
    break;

  case 56:
#line 492 "go-exp.y"
    {
			  write_dollar_variable (yyvsp[0].sval);
			}
    break;

  case 57:
#line 498 "go-exp.y"
    {
			  /* TODO(dje): Go objects in structs.  */
			  write_exp_elt_opcode (OP_LONG);
			  /* TODO(dje): What's the right type here?  */
			  write_exp_elt_type (parse_type->builtin_unsigned_int);
			  CHECK_TYPEDEF (yyvsp[-1].tval);
			  write_exp_elt_longcst ((LONGEST) TYPE_LENGTH (yyvsp[-1].tval));
			  write_exp_elt_opcode (OP_LONG);
			}
    break;

  case 58:
#line 510 "go-exp.y"
    {
			  /* TODO(dje): Go objects in structs.  */
			  write_exp_elt_opcode (UNOP_SIZEOF);
			}
    break;

  case 59:
#line 517 "go-exp.y"
    {
			  /* We copy the string here, and not in the
			     lexer, to guarantee that we do not leak a
			     string.  */
			  /* Note that we NUL-terminate here, but just
			     for convenience.  */
			  struct typed_stoken *vec = XNEW (struct typed_stoken);
			  yyval.svec.len = 1;
			  yyval.svec.tokens = vec;

			  vec->type = yyvsp[0].tsval.type;
			  vec->length = yyvsp[0].tsval.length;
			  vec->ptr = xmalloc (yyvsp[0].tsval.length + 1);
			  memcpy (vec->ptr, yyvsp[0].tsval.ptr, yyvsp[0].tsval.length + 1);
			}
    break;

  case 60:
#line 534 "go-exp.y"
    {
			  /* Note that we NUL-terminate here, but just
			     for convenience.  */
			  char *p;
			  ++yyval.svec.len;
			  yyval.svec.tokens = xrealloc (yyval.svec.tokens,
					       yyval.svec.len * sizeof (struct typed_stoken));

			  p = xmalloc (yyvsp[0].tsval.length + 1);
			  memcpy (p, yyvsp[0].tsval.ptr, yyvsp[0].tsval.length + 1);

			  yyval.svec.tokens[yyval.svec.len - 1].type = yyvsp[0].tsval.type;
			  yyval.svec.tokens[yyval.svec.len - 1].length = yyvsp[0].tsval.length;
			  yyval.svec.tokens[yyval.svec.len - 1].ptr = p;
			}
    break;

  case 61:
#line 552 "go-exp.y"
    {
			  int i;

			  write_exp_string_vector (0 /*always utf8*/, &yyvsp[0].svec);
			  for (i = 0; i < yyvsp[0].svec.len; ++i)
			    xfree (yyvsp[0].svec.tokens[i].ptr);
			  xfree (yyvsp[0].svec.tokens);
			}
    break;

  case 62:
#line 563 "go-exp.y"
    { write_exp_elt_opcode (OP_BOOL);
			  write_exp_elt_longcst ((LONGEST) yyvsp[0].lval);
			  write_exp_elt_opcode (OP_BOOL); }
    break;

  case 63:
#line 569 "go-exp.y"
    { write_exp_elt_opcode (OP_BOOL);
			  write_exp_elt_longcst ((LONGEST) yyvsp[0].lval);
			  write_exp_elt_opcode (OP_BOOL); }
    break;

  case 64:
#line 575 "go-exp.y"
    { struct symbol *sym = yyvsp[-1].ssym.sym;

			  if (sym == NULL
			      || !SYMBOL_IS_ARGUMENT (sym)
			      || !symbol_read_needs_frame (sym))
			    error (_("@entry can be used only for function "
				     "parameters, not for \"%s\""),
				   copy_name (yyvsp[-1].ssym.stoken));

			  write_exp_elt_opcode (OP_VAR_ENTRY_VALUE);
			  write_exp_elt_sym (sym);
			  write_exp_elt_opcode (OP_VAR_ENTRY_VALUE);
			}
    break;

  case 65:
#line 591 "go-exp.y"
    { struct symbol *sym = yyvsp[0].ssym.sym;

			  if (sym)
			    {
			      if (symbol_read_needs_frame (sym))
				{
				  if (innermost_block == 0
				      || contained_in (block_found,
						       innermost_block))
				    innermost_block = block_found;
				}

			      write_exp_elt_opcode (OP_VAR_VALUE);
			      /* We want to use the selected frame, not
				 another more inner frame which happens to
				 be in the same block.  */
			      write_exp_elt_block (NULL);
			      write_exp_elt_sym (sym);
			      write_exp_elt_opcode (OP_VAR_VALUE);
			    }
			  else if (yyvsp[0].ssym.is_a_field_of_this)
			    {
			      /* TODO(dje): Can we get here?
				 E.g., via a mix of c++ and go?  */
			      gdb_assert_not_reached ("go with `this' field");
			    }
			  else
			    {
			      struct minimal_symbol *msymbol;
			      char *arg = copy_name (yyvsp[0].ssym.stoken);

			      msymbol =
				lookup_minimal_symbol (arg, NULL, NULL);
			      if (msymbol != NULL)
				write_exp_msymbol (msymbol);
			      else if (!have_full_symbols ()
				       && !have_partial_symbols ())
				error (_("No symbol table is loaded.  "
				       "Use the \"file\" command."));
			      else
				error (_("No symbol \"%s\" in current context."),
				       copy_name (yyvsp[0].ssym.stoken));
			    }
			}
    break;

  case 66:
#line 646 "go-exp.y"
    { yyval.tval = lookup_pointer_type (yyvsp[0].tval); }
    break;

  case 67:
#line 648 "go-exp.y"
    { yyval.tval = yyvsp[0].tsym.type; }
    break;

  case 68:
#line 655 "go-exp.y"
    { yyval.tval = builtin_go_type (parse_gdbarch)
			    ->builtin_uint8; }
    break;


    }

/* Line 1000 of yacc.c.  */
#line 1803 "go-exp.c"

  yyvsp -= yylen;
  yyssp -= yylen;


  YY_STACK_PRINT (yyss, yyssp);

  *++yyvsp = yyval;


  /* Now `shift' the result of the reduction.  Determine what state
     that goes to, based on the state we popped back to and the rule
     number reduced by.  */

  yyn = yyr1[yyn];

  yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
    yystate = yytable[yystate];
  else
    yystate = yydefgoto[yyn - YYNTOKENS];

  goto yynewstate;


/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
  /* If not already recovering from an error, report this error.  */
  if (!yyerrstatus)
    {
      ++yynerrs;
#if YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (YYPACT_NINF < yyn && yyn < YYLAST)
	{
	  YYSIZE_T yysize = 0;
	  int yytype = YYTRANSLATE (yychar);
	  const char* yyprefix;
	  char *yymsg;
	  int yyx;

	  /* Start YYX at -YYN if negative to avoid negative indexes in
	     YYCHECK.  */
	  int yyxbegin = yyn < 0 ? -yyn : 0;

	  /* Stay within bounds of both yycheck and yytname.  */
	  int yychecklim = YYLAST - yyn;
	  int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
	  int yycount = 0;

	  yyprefix = ", expecting ";
	  for (yyx = yyxbegin; yyx < yyxend; ++yyx)
	    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
	      {
		yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
		yycount += 1;
		if (yycount == 5)
		  {
		    yysize = 0;
		    break;
		  }
	      }
	  yysize += (sizeof ("syntax error, unexpected ")
		     + yystrlen (yytname[yytype]));
	  yymsg = (char *) YYSTACK_ALLOC (yysize);
	  if (yymsg != 0)
	    {
	      char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
	      yyp = yystpcpy (yyp, yytname[yytype]);

	      if (yycount < 5)
		{
		  yyprefix = ", expecting ";
		  for (yyx = yyxbegin; yyx < yyxend; ++yyx)
		    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
		      {
			yyp = yystpcpy (yyp, yyprefix);
			yyp = yystpcpy (yyp, yytname[yyx]);
			yyprefix = " or ";
		      }
		}
	      yyerror (yymsg);
	      YYSTACK_FREE (yymsg);
	    }
	  else
	    yyerror ("syntax error; also virtual memory exhausted");
	}
      else
#endif /* YYERROR_VERBOSE */
	yyerror ("syntax error");
    }


  if (yyerrstatus == 3)
    {
      /* If just tried and failed to reuse lookahead token after an
	 error, discard it.  */

      if (yychar <= YYEOF)
        {
          /* If at end of input, pop the error token,
	     then the rest of the stack, then return failure.  */
	  if (yychar == YYEOF)
	     for (;;)
	       {
		 YYPOPSTACK;
		 if (yyssp == yyss)
		   YYABORT;
		 YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
		 yydestruct (yystos[*yyssp], yyvsp);
	       }
        }
      else
	{
	  YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
	  yydestruct (yytoken, &yylval);
	  yychar = YYEMPTY;

	}
    }

  /* Else will try to reuse lookahead token after shifting the error
     token.  */
  goto yyerrlab1;


/*---------------------------------------------------.
| yyerrorlab -- error raised explicitly by YYERROR.  |
`---------------------------------------------------*/
yyerrorlab:

#ifdef __GNUC__
  /* Pacify GCC when the user code never invokes YYERROR and the label
     yyerrorlab therefore never appears in user code.  */
  if (0)
     goto yyerrorlab;
#endif

  yyvsp -= yylen;
  yyssp -= yylen;
  yystate = *yyssp;
  goto yyerrlab1;


/*-------------------------------------------------------------.
| yyerrlab1 -- common code for both syntax error and YYERROR.  |
`-------------------------------------------------------------*/
yyerrlab1:
  yyerrstatus = 3;	/* Each real token shifted decrements this.  */

  for (;;)
    {
      yyn = yypact[yystate];
      if (yyn != YYPACT_NINF)
	{
	  yyn += YYTERROR;
	  if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
	    {
	      yyn = yytable[yyn];
	      if (0 < yyn)
		break;
	    }
	}

      /* Pop the current state because it cannot handle the error token.  */
      if (yyssp == yyss)
	YYABORT;

      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
      yydestruct (yystos[yystate], yyvsp);
      YYPOPSTACK;
      yystate = *yyssp;
      YY_STACK_PRINT (yyss, yyssp);
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  YYDPRINTF ((stderr, "Shifting error token, "));

  *++yyvsp = yylval;


  yystate = yyn;
  goto yynewstate;


/*-------------------------------------.
| yyacceptlab -- YYACCEPT comes here.  |
`-------------------------------------*/
yyacceptlab:
  yyresult = 0;
  goto yyreturn;

/*-----------------------------------.
| yyabortlab -- YYABORT comes here.  |
`-----------------------------------*/
yyabortlab:
  yyresult = 1;
  goto yyreturn;

#ifndef yyoverflow
/*----------------------------------------------.
| yyoverflowlab -- parser overflow comes here.  |
`----------------------------------------------*/
yyoverflowlab:
  yyerror ("parser stack overflow");
  yyresult = 2;
  /* Fall through.  */
#endif

yyreturn:
#ifndef yyoverflow
  if (yyss != yyssa)
    YYSTACK_FREE (yyss);
#endif
  return yyresult;
}


#line 677 "go-exp.y"


/* Wrapper on parse_c_float to get the type right for Go.  */

static int
parse_go_float (struct gdbarch *gdbarch, const char *p, int len,
		DOUBLEST *d, struct type **t)
{
  int result = parse_c_float (gdbarch, p, len, d, t);
  const struct builtin_type *builtin_types = builtin_type (gdbarch);
  const struct builtin_go_type *builtin_go_types = builtin_go_type (gdbarch);

  if (*t == builtin_types->builtin_float)
    *t = builtin_go_types->builtin_float32;
  else if (*t == builtin_types->builtin_double)
    *t = builtin_go_types->builtin_float64;

  return result;
}

/* Take care of parsing a number (anything that starts with a digit).
   Set yylval and return the token type; update lexptr.
   LEN is the number of characters in it.  */

/* FIXME: Needs some error checking for the float case.  */
/* FIXME(dje): IWBN to use c-exp.y's parse_number if we could.
   That will require moving the guts into a function that we both call
   as our YYSTYPE is different than c-exp.y's  */

static int
parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
{
  /* FIXME: Shouldn't these be unsigned?  We don't deal with negative values
     here, and we do kind of silly things like cast to unsigned.  */
  LONGEST n = 0;
  LONGEST prevn = 0;
  ULONGEST un;

  int i = 0;
  int c;
  int base = input_radix;
  int unsigned_p = 0;

  /* Number of "L" suffixes encountered.  */
  int long_p = 0;

  /* We have found a "L" or "U" suffix.  */
  int found_suffix = 0;

  ULONGEST high_bit;
  struct type *signed_type;
  struct type *unsigned_type;

  if (parsed_float)
    {
      if (! parse_go_float (parse_gdbarch, p, len,
			    &putithere->typed_val_float.dval,
			    &putithere->typed_val_float.type))
	return ERROR;
      return FLOAT;
    }

  /* Handle base-switching prefixes 0x, 0t, 0d, 0.  */
  if (p[0] == '0')
    switch (p[1])
      {
      case 'x':
      case 'X':
	if (len >= 3)
	  {
	    p += 2;
	    base = 16;
	    len -= 2;
	  }
	break;

      case 'b':
      case 'B':
	if (len >= 3)
	  {
	    p += 2;
	    base = 2;
	    len -= 2;
	  }
	break;

      case 't':
      case 'T':
      case 'd':
      case 'D':
	if (len >= 3)
	  {
	    p += 2;
	    base = 10;
	    len -= 2;
	  }
	break;

      default:
	base = 8;
	break;
      }

  while (len-- > 0)
    {
      c = *p++;
      if (c >= 'A' && c <= 'Z')
	c += 'a' - 'A';
      if (c != 'l' && c != 'u')
	n *= base;
      if (c >= '0' && c <= '9')
	{
	  if (found_suffix)
	    return ERROR;
	  n += i = c - '0';
	}
      else
	{
	  if (base > 10 && c >= 'a' && c <= 'f')
	    {
	      if (found_suffix)
		return ERROR;
	      n += i = c - 'a' + 10;
	    }
	  else if (c == 'l')
	    {
	      ++long_p;
	      found_suffix = 1;
	    }
	  else if (c == 'u')
	    {
	      unsigned_p = 1;
	      found_suffix = 1;
	    }
	  else
	    return ERROR;	/* Char not a digit */
	}
      if (i >= base)
	return ERROR;		/* Invalid digit in this base.  */

      /* Portably test for overflow (only works for nonzero values, so make
	 a second check for zero).  FIXME: Can't we just make n and prevn
	 unsigned and avoid this?  */
      if (c != 'l' && c != 'u' && (prevn >= n) && n != 0)
	unsigned_p = 1;		/* Try something unsigned.  */

      /* Portably test for unsigned overflow.
	 FIXME: This check is wrong; for example it doesn't find overflow
	 on 0x123456789 when LONGEST is 32 bits.  */
      if (c != 'l' && c != 'u' && n != 0)
	{
	  if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n))
	    error (_("Numeric constant too large."));
	}
      prevn = n;
    }

  /* An integer constant is an int, a long, or a long long.  An L
     suffix forces it to be long; an LL suffix forces it to be long
     long.  If not forced to a larger size, it gets the first type of
     the above that it fits in.  To figure out whether it fits, we
     shift it right and see whether anything remains.  Note that we
     can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one
     operation, because many compilers will warn about such a shift
     (which always produces a zero result).  Sometimes gdbarch_int_bit
     or gdbarch_long_bit will be that big, sometimes not.  To deal with
     the case where it is we just always shift the value more than
     once, with fewer bits each time.  */

  un = (ULONGEST)n >> 2;
  if (long_p == 0
      && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0)
    {
      high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1);

      /* A large decimal (not hex or octal) constant (between INT_MAX
	 and UINT_MAX) is a long or unsigned long, according to ANSI,
	 never an unsigned int, but this code treats it as unsigned
	 int.  This probably should be fixed.  GCC gives a warning on
	 such constants.  */

      unsigned_type = parse_type->builtin_unsigned_int;
      signed_type = parse_type->builtin_int;
    }
  else if (long_p <= 1
	   && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
    {
      high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1);
      unsigned_type = parse_type->builtin_unsigned_long;
      signed_type = parse_type->builtin_long;
    }
  else
    {
      int shift;
      if (sizeof (ULONGEST) * HOST_CHAR_BIT
	  < gdbarch_long_long_bit (parse_gdbarch))
	/* A long long does not fit in a LONGEST.  */
	shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1);
      else
	shift = (gdbarch_long_long_bit (parse_gdbarch) - 1);
      high_bit = (ULONGEST) 1 << shift;
      unsigned_type = parse_type->builtin_unsigned_long_long;
      signed_type = parse_type->builtin_long_long;
    }

   putithere->typed_val_int.val = n;

   /* If the high bit of the worked out type is set then this number
      has to be unsigned.  */

   if (unsigned_p || (n & high_bit))
     {
       putithere->typed_val_int.type = unsigned_type;
     }
   else
     {
       putithere->typed_val_int.type = signed_type;
     }

   return INT;
}

/* Temporary obstack used for holding strings.  */
static struct obstack tempbuf;
static int tempbuf_init;

/* Parse a string or character literal from TOKPTR.  The string or
   character may be wide or unicode.  *OUTPTR is set to just after the
   end of the literal in the input string.  The resulting token is
   stored in VALUE.  This returns a token value, either STRING or
   CHAR, depending on what was parsed.  *HOST_CHARS is set to the
   number of host characters in the literal.  */

static int
parse_string_or_char (char *tokptr, char **outptr, struct typed_stoken *value,
		      int *host_chars)
{
  int quote;

  /* Build the gdb internal form of the input string in tempbuf.  Note
     that the buffer is null byte terminated *only* for the
     convenience of debugging gdb itself and printing the buffer
     contents when the buffer contains no embedded nulls.  Gdb does
     not depend upon the buffer being null byte terminated, it uses
     the length string instead.  This allows gdb to handle C strings
     (as well as strings in other languages) with embedded null
     bytes */

  if (!tempbuf_init)
    tempbuf_init = 1;
  else
    obstack_free (&tempbuf, NULL);
  obstack_init (&tempbuf);

  /* Skip the quote.  */
  quote = *tokptr;
  ++tokptr;

  *host_chars = 0;

  while (*tokptr)
    {
      char c = *tokptr;
      if (c == '\\')
	{
	  ++tokptr;
	  *host_chars += c_parse_escape (&tokptr, &tempbuf);
	}
      else if (c == quote)
	break;
      else
	{
	  obstack_1grow (&tempbuf, c);
	  ++tokptr;
	  /* FIXME: this does the wrong thing with multi-byte host
	     characters.  We could use mbrlen here, but that would
	     make "set host-charset" a bit less useful.  */
	  ++*host_chars;
	}
    }

  if (*tokptr != quote)
    {
      if (quote == '"')
	error (_("Unterminated string in expression."));
      else
	error (_("Unmatched single quote."));
    }
  ++tokptr;

  value->type = C_STRING | (quote == '\'' ? C_CHAR : 0); /*FIXME*/
  value->ptr = obstack_base (&tempbuf);
  value->length = obstack_object_size (&tempbuf);

  *outptr = tokptr;

  return quote == '\'' ? CHAR : STRING;
}

struct token
{
  char *operator;
  int token;
  enum exp_opcode opcode;
};

static const struct token tokentab3[] =
  {
    {">>=", ASSIGN_MODIFY, BINOP_RSH},
    {"<<=", ASSIGN_MODIFY, BINOP_LSH},
    /*{"&^=", ASSIGN_MODIFY, BINOP_BITWISE_ANDNOT}, TODO */
    {"...", DOTDOTDOT, OP_NULL},
  };

static const struct token tokentab2[] =
  {
    {"+=", ASSIGN_MODIFY, BINOP_ADD},
    {"-=", ASSIGN_MODIFY, BINOP_SUB},
    {"*=", ASSIGN_MODIFY, BINOP_MUL},
    {"/=", ASSIGN_MODIFY, BINOP_DIV},
    {"%=", ASSIGN_MODIFY, BINOP_REM},
    {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR},
    {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND},
    {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR},
    {"++", INCREMENT, BINOP_END},
    {"--", DECREMENT, BINOP_END},
    /*{"->", RIGHT_ARROW, BINOP_END}, Doesn't exist in Go.  */
    {"<-", LEFT_ARROW, BINOP_END},
    {"&&", ANDAND, BINOP_END},
    {"||", OROR, BINOP_END},
    {"<<", LSH, BINOP_END},
    {">>", RSH, BINOP_END},
    {"==", EQUAL, BINOP_END},
    {"!=", NOTEQUAL, BINOP_END},
    {"<=", LEQ, BINOP_END},
    {">=", GEQ, BINOP_END},
    /*{"&^", ANDNOT, BINOP_END}, TODO */
  };

/* Identifier-like tokens.  */
static const struct token ident_tokens[] =
  {
    {"true", TRUE_KEYWORD, OP_NULL},
    {"false", FALSE_KEYWORD, OP_NULL},
    {"nil", NIL_KEYWORD, OP_NULL},
    {"const", CONST_KEYWORD, OP_NULL},
    {"struct", STRUCT_KEYWORD, OP_NULL},
    {"type", TYPE_KEYWORD, OP_NULL},
    {"interface", INTERFACE_KEYWORD, OP_NULL},
    {"chan", CHAN_KEYWORD, OP_NULL},
    {"byte", BYTE_KEYWORD, OP_NULL}, /* An alias of uint8.  */
    {"len", LEN_KEYWORD, OP_NULL},
    {"cap", CAP_KEYWORD, OP_NULL},
    {"new", NEW_KEYWORD, OP_NULL},
    {"iota", IOTA_KEYWORD, OP_NULL},
  };

/* This is set if a NAME token appeared at the very end of the input
   string, with no whitespace separating the name from the EOF.  This
   is used only when parsing to do field name completion.  */
static int saw_name_at_eof;

/* This is set if the previously-returned token was a structure
   operator -- either '.' or ARROW.  This is used only when parsing to
   do field name completion.  */
static int last_was_structop;

/* Read one token, getting characters through lexptr.  */

static int
lex_one_token (void)
{
  int c;
  int namelen;
  unsigned int i;
  char *tokstart;
  int saw_structop = last_was_structop;
  char *copy;

  last_was_structop = 0;

 retry:

  prev_lexptr = lexptr;

  tokstart = lexptr;
  /* See if it is a special token of length 3.  */
  for (i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++)
    if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
      {
	lexptr += 3;
	yylval.opcode = tokentab3[i].opcode;
	return tokentab3[i].token;
      }

  /* See if it is a special token of length 2.  */
  for (i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++)
    if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
      {
	lexptr += 2;
	yylval.opcode = tokentab2[i].opcode;
	/* NOTE: -> doesn't exist in Go, so we don't need to watch for
	   setting last_was_structop here.  */
	return tokentab2[i].token;
      }

  switch (c = *tokstart)
    {
    case 0:
      if (saw_name_at_eof)
	{
	  saw_name_at_eof = 0;
	  return COMPLETE;
	}
      else if (saw_structop)
	return COMPLETE;
      else
        return 0;

    case ' ':
    case '\t':
    case '\n':
      lexptr++;
      goto retry;

    case '[':
    case '(':
      paren_depth++;
      lexptr++;
      return c;

    case ']':
    case ')':
      if (paren_depth == 0)
	return 0;
      paren_depth--;
      lexptr++;
      return c;

    case ',':
      if (comma_terminates
          && paren_depth == 0)
	return 0;
      lexptr++;
      return c;

    case '.':
      /* Might be a floating point number.  */
      if (lexptr[1] < '0' || lexptr[1] > '9')
	{
	  if (in_parse_field)
	    last_was_structop = 1;
	  goto symbol;		/* Nope, must be a symbol. */
	}
      /* FALL THRU into number case.  */

    case '0':
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9':
      {
	/* It's a number.  */
	int got_dot = 0, got_e = 0, toktype;
	char *p = tokstart;
	int hex = input_radix > 10;

	if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
	  {
	    p += 2;
	    hex = 1;
	  }

	for (;; ++p)
	  {
	    /* This test includes !hex because 'e' is a valid hex digit
	       and thus does not indicate a floating point number when
	       the radix is hex.  */
	    if (!hex && !got_e && (*p == 'e' || *p == 'E'))
	      got_dot = got_e = 1;
	    /* This test does not include !hex, because a '.' always indicates
	       a decimal floating point number regardless of the radix.  */
	    else if (!got_dot && *p == '.')
	      got_dot = 1;
	    else if (got_e && (p[-1] == 'e' || p[-1] == 'E')
		     && (*p == '-' || *p == '+'))
	      /* This is the sign of the exponent, not the end of the
		 number.  */
	      continue;
	    /* We will take any letters or digits.  parse_number will
	       complain if past the radix, or if L or U are not final.  */
	    else if ((*p < '0' || *p > '9')
		     && ((*p < 'a' || *p > 'z')
				  && (*p < 'A' || *p > 'Z')))
	      break;
	  }
	toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval);
        if (toktype == ERROR)
	  {
	    char *err_copy = (char *) alloca (p - tokstart + 1);

	    memcpy (err_copy, tokstart, p - tokstart);
	    err_copy[p - tokstart] = 0;
	    error (_("Invalid number \"%s\"."), err_copy);
	  }
	lexptr = p;
	return toktype;
      }

    case '@':
      {
	char *p = &tokstart[1];
	size_t len = strlen ("entry");

	while (isspace (*p))
	  p++;
	if (strncmp (p, "entry", len) == 0 && !isalnum (p[len])
	    && p[len] != '_')
	  {
	    lexptr = &p[len];
	    return ENTRY;
	  }
      }
      /* FALLTHRU */
    case '+':
    case '-':
    case '*':
    case '/':
    case '%':
    case '|':
    case '&':
    case '^':
    case '~':
    case '!':
    case '<':
    case '>':
    case '?':
    case ':':
    case '=':
    case '{':
    case '}':
    symbol:
      lexptr++;
      return c;

    case '\'':
    case '"':
    case '`':
      {
	int host_len;
	int result = parse_string_or_char (tokstart, &lexptr, &yylval.tsval,
					   &host_len);
	if (result == CHAR)
	  {
	    if (host_len == 0)
	      error (_("Empty character constant."));
	    else if (host_len > 2 && c == '\'')
	      {
		++tokstart;
		namelen = lexptr - tokstart - 1;
		goto tryname;
	      }
	    else if (host_len > 1)
	      error (_("Invalid character constant."));
	  }
	return result;
      }
    }

  if (!(c == '_' || c == '$'
	|| (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
    /* We must have come across a bad character (e.g. ';').  */
    error (_("Invalid character '%c' in expression."), c);

  /* It's a name.  See how long it is.  */
  namelen = 0;
  for (c = tokstart[namelen];
       (c == '_' || c == '$' || (c >= '0' && c <= '9')
	|| (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));)
    {
      c = tokstart[++namelen];
    }

  /* The token "if" terminates the expression and is NOT removed from
     the input stream.  It doesn't count if it appears in the
     expansion of a macro.  */
  if (namelen == 2
      && tokstart[0] == 'i'
      && tokstart[1] == 'f')
    {
      return 0;
    }

  /* For the same reason (breakpoint conditions), "thread N"
     terminates the expression.  "thread" could be an identifier, but
     an identifier is never followed by a number without intervening
     punctuation.
     Handle abbreviations of these, similarly to
     breakpoint.c:find_condition_and_thread.
     TODO: Watch for "goroutine" here?  */
  if (namelen >= 1
      && strncmp (tokstart, "thread", namelen) == 0
      && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t'))
    {
      char *p = tokstart + namelen + 1;
      while (*p == ' ' || *p == '\t')
	p++;
      if (*p >= '0' && *p <= '9')
	return 0;
    }

  lexptr += namelen;

  tryname:

  yylval.sval.ptr = tokstart;
  yylval.sval.length = namelen;

  /* Catch specific keywords.  */
  copy = copy_name (yylval.sval);
  for (i = 0; i < sizeof (ident_tokens) / sizeof (ident_tokens[0]); i++)
    if (strcmp (copy, ident_tokens[i].operator) == 0)
      {
	/* It is ok to always set this, even though we don't always
	   strictly need to.  */
	yylval.opcode = ident_tokens[i].opcode;
	return ident_tokens[i].token;
      }

  if (*tokstart == '$')
    return DOLLAR_VARIABLE;

  if (in_parse_field && *lexptr == '\0')
    saw_name_at_eof = 1;
  return NAME;
}

/* An object of this type is pushed on a FIFO by the "outer" lexer.  */
typedef struct
{
  int token;
  YYSTYPE value;
} token_and_value;

DEF_VEC_O (token_and_value);

/* A FIFO of tokens that have been read but not yet returned to the
   parser.  */
static VEC (token_and_value) *token_fifo;

/* Non-zero if the lexer should return tokens from the FIFO.  */
static int popping;

/* Temporary storage for yylex; this holds symbol names as they are
   built up.  */
static struct obstack name_obstack;

/* Build "package.name" in name_obstack.
   For convenience of the caller, the name is NUL-terminated,
   but the NUL is not included in the recorded length.  */

static struct stoken
build_packaged_name (const char *package, int package_len,
		     const char *name, int name_len)
{
  struct stoken result;

  obstack_free (&name_obstack, obstack_base (&name_obstack));
  obstack_grow (&name_obstack, package, package_len);
  obstack_grow_str (&name_obstack, ".");
  obstack_grow (&name_obstack, name, name_len);
  obstack_grow (&name_obstack, "", 1);
  result.ptr = obstack_base (&name_obstack);
  result.length = obstack_object_size (&name_obstack) - 1;

  return result;
}

/* Return non-zero if NAME is a package name.
   BLOCK is the scope in which to interpret NAME; this can be NULL
   to mean the global scope.  */

static int
package_name_p (const char *name, struct block *block)
{
  struct symbol *sym;
  int is_a_field_of_this;

  sym = lookup_symbol (name, block, STRUCT_DOMAIN, &is_a_field_of_this);

  if (sym
      && SYMBOL_CLASS (sym) == LOC_TYPEDEF
      && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_MODULE)
    return 1;

  return 0;
}

/* Classify a (potential) function in the "unsafe" package.
   We fold these into "keywords" to keep things simple, at least until
   something more complex is warranted.  */

static int
classify_unsafe_function (struct stoken function_name)
{
  char *copy = copy_name (function_name);

  if (strcmp (copy, "Sizeof") == 0)
    {
      yylval.sval = function_name;
      return SIZEOF_KEYWORD;
    }

  error (_("Unknown function in `unsafe' package: %s"), copy);
}

/* Classify token(s) "name1.name2" where name1 is known to be a package.
   The contents of the token are in `yylval'.
   Updates yylval and returns the new token type.

   The result is one of NAME, NAME_OR_INT, or TYPENAME.  */

static int
classify_packaged_name (struct block *block)
{
  char *copy;
  struct symbol *sym;
  int is_a_field_of_this = 0;

  copy = copy_name (yylval.sval);

  sym = lookup_symbol (copy, block, VAR_DOMAIN, &is_a_field_of_this);

  if (sym)
    {
      yylval.ssym.sym = sym;
      yylval.ssym.is_a_field_of_this = is_a_field_of_this;
    }

  return NAME;
}

/* Classify a NAME token.
   The contents of the token are in `yylval'.
   Updates yylval and returns the new token type.
   BLOCK is the block in which lookups start; this can be NULL
   to mean the global scope.

   The result is one of NAME, NAME_OR_INT, or TYPENAME.  */

static int
classify_name (struct block *block)
{
  struct type *type;
  struct symbol *sym;
  char *copy;
  int is_a_field_of_this = 0;

  copy = copy_name (yylval.sval);

  /* Try primitive types first so they win over bad/weird debug info.  */
  type = language_lookup_primitive_type_by_name (parse_language,
						 parse_gdbarch, copy);
  if (type != NULL)
    {
      /* NOTE: We take advantage of the fact that yylval coming in was a
	 NAME, and that struct ttype is a compatible extension of struct
	 stoken, so yylval.tsym.stoken is already filled in.  */
      yylval.tsym.type = type;
      return TYPENAME;
    }

  /* TODO: What about other types?  */

  sym = lookup_symbol (copy, block, VAR_DOMAIN, &is_a_field_of_this);

  if (sym)
    {
      yylval.ssym.sym = sym;
      yylval.ssym.is_a_field_of_this = is_a_field_of_this;
      return NAME;
    }

  /* If we didn't find a symbol, look again in the current package.
     This is to, e.g., make "p global_var" work without having to specify
     the package name.  We intentionally only looks for objects in the
     current package.  */

  {
    char *current_package_name = go_block_package_name (block);

    if (current_package_name != NULL)
      {
	struct stoken sval =
	  build_packaged_name (current_package_name,
			       strlen (current_package_name),
			       copy, strlen (copy));

	xfree (current_package_name);
	sym = lookup_symbol (sval.ptr, block, VAR_DOMAIN,
			     &is_a_field_of_this);
	if (sym)
	  {
	    yylval.ssym.stoken = sval;
	    yylval.ssym.sym = sym;
	    yylval.ssym.is_a_field_of_this = is_a_field_of_this;
	    return NAME;
	  }
      }
  }

  /* Input names that aren't symbols but ARE valid hex numbers, when
     the input radix permits them, can be names or numbers depending
     on the parse.  Note we support radixes > 16 here.  */
  if ((copy[0] >= 'a' && copy[0] < 'a' + input_radix - 10)
      || (copy[0] >= 'A' && copy[0] < 'A' + input_radix - 10))
    {
      YYSTYPE newlval;	/* Its value is ignored.  */
      int hextype = parse_number (copy, yylval.sval.length, 0, &newlval);
      if (hextype == INT)
	{
	  yylval.ssym.sym = NULL;
	  yylval.ssym.is_a_field_of_this = 0;
	  return NAME_OR_INT;
	}
    }

  yylval.ssym.sym = NULL;
  yylval.ssym.is_a_field_of_this = 0;
  return NAME;
}

/* This is taken from c-exp.y mostly to get something working.
   The basic structure has been kept because we may yet need some of it.  */

static int
yylex (void)
{
  token_and_value current, next;

  if (popping && !VEC_empty (token_and_value, token_fifo))
    {
      token_and_value tv = *VEC_index (token_and_value, token_fifo, 0);
      VEC_ordered_remove (token_and_value, token_fifo, 0);
      yylval = tv.value;
      /* There's no need to fall through to handle package.name
	 as that can never happen here.  In theory.  */
      return tv.token;
    }
  popping = 0;

  current.token = lex_one_token ();

  /* TODO: Need a way to force specifying name1 as a package.
     .name1.name2 ?  */

  if (current.token != NAME)
    return current.token;

  /* See if we have "name1 . name2".  */

  current.value = yylval;
  next.token = lex_one_token ();
  next.value = yylval;

  if (next.token == '.')
    {
      token_and_value name2;

      name2.token = lex_one_token ();
      name2.value = yylval;

      if (name2.token == NAME)
	{
	  /* Ok, we have "name1 . name2".  */
	  char *copy;

	  copy = copy_name (current.value.sval);

	  if (strcmp (copy, "unsafe") == 0)
	    {
	      popping = 1;
	      return classify_unsafe_function (name2.value.sval);
	    }

	  if (package_name_p (copy, expression_context_block))
	    {
	      popping = 1;
	      yylval.sval = build_packaged_name (current.value.sval.ptr,
						 current.value.sval.length,
						 name2.value.sval.ptr,
						 name2.value.sval.length);
	      return classify_packaged_name (expression_context_block);
	    }
	}

      VEC_safe_push (token_and_value, token_fifo, &next);
      VEC_safe_push (token_and_value, token_fifo, &name2);
    }
  else
    {
      VEC_safe_push (token_and_value, token_fifo, &next);
    }

  /* If we arrive here we don't have a package-qualified name.  */

  popping = 1;
  yylval = current.value;
  return classify_name (expression_context_block);
}

int
go_parse (void)
{
  int result;
  struct cleanup *back_to = make_cleanup (null_cleanup, NULL);

  make_cleanup_restore_integer (&yydebug);
  yydebug = parser_debug;

  /* Initialize some state used by the lexer.  */
  last_was_structop = 0;
  saw_name_at_eof = 0;

  VEC_free (token_and_value, token_fifo);
  popping = 0;
  obstack_init (&name_obstack);
  make_cleanup_obstack_free (&name_obstack);

  result = yyparse ();
  do_cleanups (back_to);
  return result;
}

void
yyerror (char *msg)
{
  if (prev_lexptr)
    lexptr = prev_lexptr;

  error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr);
}