text: /* A Bison parser, made by GNU Bison 3.0.2.  */
  
  /* Bison implementation for Yacc-like parsers in C
  
     Copyright (C) 1984, 1989-1990, 2000-2013 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */
  
  /* As a special exception, you may create a larger work that contains
     part or all of the Bison parser skeleton and distribute that work
     under terms of your choice, so long as that work isn't itself a
     parser generator using the skeleton or a modified version thereof
     as a parser skeleton.  Alternatively, if you modify or redistribute
     the parser skeleton itself, you may (at your option) remove this
     special exception, which will cause the skeleton and the resulting
     Bison output files to be licensed under the GNU General Public
     License without this special exception.
  
     This special exception was added by the Free Software Foundation in
     version 2.2 of Bison.  */
  
  /* C LALR(1) parser skeleton 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
  
  /* Bison version.  */
  #define YYBISON_VERSION "3.0.2"
  
  /* Skeleton name.  */
  #define YYSKELETON_NAME "yacc.c"
  
  /* Pure parsers.  */
  #define YYPURE 1
  
  /* Push parsers.  */
  #define YYPUSH 0
  
  /* Pull parsers.  */
  #define YYPULL 1
  
  
  /* Substitute the variable and function names.  */
  #define yyparse         glcpp_parser_parse
  #define yylex           glcpp_parser_lex
  #define yyerror         glcpp_parser_error
  #define yydebug         glcpp_parser_debug
  #define yynerrs         glcpp_parser_nerrs
  
  
  /* Copy the first part of user declarations.  */
  #line 1 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:339  */
  
  /*
   * Copyright © 2010 Intel Corporation
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <assert.h>
  #include <inttypes.h>
  
  #include "glcpp.h"
  #include "main/core.h" /* for struct gl_extensions */
  #include "main/mtypes.h" /* for gl_api enum */
  
  static void
  yyerror (YYLTYPE *locp, glcpp_parser_t *parser, const char *error);
  
  static void
  _define_object_macro (glcpp_parser_t *parser,
  		      YYLTYPE *loc,
  		      const char *macro,
  		      token_list_t *replacements);
  
  static void
  _define_function_macro (glcpp_parser_t *parser,
  			YYLTYPE *loc,
  			const char *macro,
  			string_list_t *parameters,
  			token_list_t *replacements);
  
  static string_list_t *
  _string_list_create (void *ctx);
  
  static void
  _string_list_append_item (string_list_t *list, const char *str);
  
  static int
  _string_list_contains (string_list_t *list, const char *member, int *index);
  
  static const char *
  _string_list_has_duplicate (string_list_t *list);
  
  static int
  _string_list_length (string_list_t *list);
  
  static int
  _string_list_equal (string_list_t *a, string_list_t *b);
  
  static argument_list_t *
  _argument_list_create (void *ctx);
  
  static void
  _argument_list_append (argument_list_t *list, token_list_t *argument);
  
  static int
  _argument_list_length (argument_list_t *list);
  
  static token_list_t *
  _argument_list_member_at (argument_list_t *list, int index);
  
  /* Note: This function ralloc_steal()s the str pointer. */
  static token_t *
  _token_create_str (void *ctx, int type, char *str);
  
  static token_t *
  _token_create_ival (void *ctx, int type, int ival);
  
  static token_list_t *
  _token_list_create (void *ctx);
  
  static void
  _token_list_append (token_list_t *list, token_t *token);
  
  static void
  _token_list_append_list (token_list_t *list, token_list_t *tail);
  
  static int
  _token_list_equal_ignoring_space (token_list_t *a, token_list_t *b);
  
  static void
  _parser_active_list_push (glcpp_parser_t *parser,
  			  const char *identifier,
  			  token_node_t *marker);
  
  static void
  _parser_active_list_pop (glcpp_parser_t *parser);
  
  static int
  _parser_active_list_contains (glcpp_parser_t *parser, const char *identifier);
  
  typedef enum {
  	EXPANSION_MODE_IGNORE_DEFINED,
  	EXPANSION_MODE_EVALUATE_DEFINED
  } expansion_mode_t;
  
  /* Expand list, and begin lexing from the result (after first
   * prefixing a token of type 'head_token_type').
   */
  static void
  _glcpp_parser_expand_and_lex_from (glcpp_parser_t *parser,
  				   int head_token_type,
  				   token_list_t *list,
  				   expansion_mode_t mode);
  
  /* Perform macro expansion in-place on the given list. */
  static void
  _glcpp_parser_expand_token_list (glcpp_parser_t *parser,
  				 token_list_t *list,
  				 expansion_mode_t mode);
  
  static void
  _glcpp_parser_print_expanded_token_list (glcpp_parser_t *parser,
  					 token_list_t *list);
  
  static void
  _glcpp_parser_skip_stack_push_if (glcpp_parser_t *parser, YYLTYPE *loc,
  				  int condition);
  
  static void
  _glcpp_parser_skip_stack_change_if (glcpp_parser_t *parser, YYLTYPE *loc,
  				    const char *type, int condition);
  
  static void
  _glcpp_parser_skip_stack_pop (glcpp_parser_t *parser, YYLTYPE *loc);
  
  static void
  _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t version,
                                           const char *ident, bool explicitly_set);
  
  static int
  glcpp_parser_lex (YYSTYPE *yylval, YYLTYPE *yylloc, glcpp_parser_t *parser);
  
  static void
  glcpp_parser_lex_from (glcpp_parser_t *parser, token_list_t *list);
  
  static void
  add_builtin_define(glcpp_parser_t *parser, const char *name, int value);
  
  
  #line 232 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:339  */
  
  # ifndef YY_NULLPTR
  #  if defined __cplusplus && 201103L <= __cplusplus
  #   define YY_NULLPTR nullptr
  #  else
  #   define YY_NULLPTR 0
  #  endif
  # endif
  
  /* Enabling verbose error messages.  */
  #ifdef YYERROR_VERBOSE
  # undef YYERROR_VERBOSE
  # define YYERROR_VERBOSE 1
  #else
  # define YYERROR_VERBOSE 1
  #endif
  
  /* In a future release of Bison, this section will be replaced
     by #include "glcpp-parse.h".  */
  #ifndef YY_GLCPP_PARSER_SRC_GLSL_GLCPP_GLCPP_PARSE_H_INCLUDED
  # define YY_GLCPP_PARSER_SRC_GLSL_GLCPP_GLCPP_PARSE_H_INCLUDED
  /* Debug traces.  */
  #ifndef YYDEBUG
  # define YYDEBUG 1
  #endif
  #if YYDEBUG
  extern int glcpp_parser_debug;
  #endif
  
  /* Token type.  */
  #ifndef YYTOKENTYPE
  # define YYTOKENTYPE
    enum yytokentype
    {
      DEFINED = 258,
      ELIF_EXPANDED = 259,
      HASH_TOKEN = 260,
      DEFINE_TOKEN = 261,
      FUNC_IDENTIFIER = 262,
      OBJ_IDENTIFIER = 263,
      ELIF = 264,
      ELSE = 265,
      ENDIF = 266,
      ERROR_TOKEN = 267,
      IF = 268,
      IFDEF = 269,
      IFNDEF = 270,
      LINE = 271,
      PRAGMA = 272,
      UNDEF = 273,
      VERSION_TOKEN = 274,
      GARBAGE = 275,
      IDENTIFIER = 276,
      IF_EXPANDED = 277,
      INTEGER = 278,
      INTEGER_STRING = 279,
      LINE_EXPANDED = 280,
      NEWLINE = 281,
      OTHER = 282,
      PLACEHOLDER = 283,
      SPACE = 284,
      PLUS_PLUS = 285,
      MINUS_MINUS = 286,
      PASTE = 287,
      OR = 288,
      AND = 289,
      EQUAL = 290,
      NOT_EQUAL = 291,
      LESS_OR_EQUAL = 292,
      GREATER_OR_EQUAL = 293,
      LEFT_SHIFT = 294,
      RIGHT_SHIFT = 295,
      UNARY = 296
    };
  #endif
  
  /* Value type.  */
  
  /* Location type.  */
  #if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
  typedef struct YYLTYPE YYLTYPE;
  struct YYLTYPE
  {
    int first_line;
    int first_column;
    int last_line;
    int last_column;
  };
  # define YYLTYPE_IS_DECLARED 1
  # define YYLTYPE_IS_TRIVIAL 1
  #endif
  
  
  
  int glcpp_parser_parse (glcpp_parser_t *parser);
  
  #endif /* !YY_GLCPP_PARSER_SRC_GLSL_GLCPP_GLCPP_PARSE_H_INCLUDED  */
  
  /* Copy the second part of user declarations.  */
  
  #line 333 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:358  */
  
  #ifdef short
  # undef short
  #endif
  
  #ifdef YYTYPE_UINT8
  typedef YYTYPE_UINT8 yytype_uint8;
  #else
  typedef unsigned char yytype_uint8;
  #endif
  
  #ifdef YYTYPE_INT8
  typedef YYTYPE_INT8 yytype_int8;
  #else
  typedef signed char yytype_int8;
  #endif
  
  #ifdef YYTYPE_UINT16
  typedef YYTYPE_UINT16 yytype_uint16;
  #else
  typedef unsigned short int yytype_uint16;
  #endif
  
  #ifdef YYTYPE_INT16
  typedef YYTYPE_INT16 yytype_int16;
  #else
  typedef short int yytype_int16;
  #endif
  
  #ifndef YYSIZE_T
  # ifdef __SIZE_TYPE__
  #  define YYSIZE_T __SIZE_TYPE__
  # elif defined size_t
  #  define YYSIZE_T size_t
  # elif ! defined YYSIZE_T
  #  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
  #  define YYSIZE_T size_t
  # else
  #  define YYSIZE_T unsigned int
  # endif
  #endif
  
  #define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
  
  #ifndef YY_
  # if defined YYENABLE_NLS && YYENABLE_NLS
  #  if ENABLE_NLS
  #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
  #   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
  #  endif
  # endif
  # ifndef YY_
  #  define YY_(Msgid) Msgid
  # endif
  #endif
  
  #ifndef YY_ATTRIBUTE
  # if (defined __GNUC__                                               \
        && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)))  \
       || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
  #  define YY_ATTRIBUTE(Spec) __attribute__(Spec)
  # else
  #  define YY_ATTRIBUTE(Spec) /* empty */
  # endif
  #endif
  
  #ifndef YY_ATTRIBUTE_PURE
  # define YY_ATTRIBUTE_PURE   YY_ATTRIBUTE ((__pure__))
  #endif
  
  #ifndef YY_ATTRIBUTE_UNUSED
  # define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
  #endif
  
  #if !defined _Noreturn \
       && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112)
  # if defined _MSC_VER && 1200 <= _MSC_VER
  #  define _Noreturn __declspec (noreturn)
  # else
  #  define _Noreturn YY_ATTRIBUTE ((__noreturn__))
  # endif
  #endif
  
  /* Suppress unused-variable warnings by "using" E.  */
  #if ! defined lint || defined __GNUC__
  # define YYUSE(E) ((void) (E))
  #else
  # define YYUSE(E) /* empty */
  #endif
  
  #if defined __GNUC__ && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
  /* Suppress an incorrect diagnostic about yylval being uninitialized.  */
  # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
      _Pragma ("GCC diagnostic push") \
      _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
      _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
  # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
      _Pragma ("GCC diagnostic pop")
  #else
  # define YY_INITIAL_VALUE(Value) Value
  #endif
  #ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  # define YY_IGNORE_MAYBE_UNINITIALIZED_END
  #endif
  #ifndef YY_INITIAL_VALUE
  # define YY_INITIAL_VALUE(Value) /* Nothing. */
  #endif
  
  
  #if ! defined yyoverflow || YYERROR_VERBOSE
  
  /* The parser invokes alloca or malloc; define the necessary symbols.  */
  
  # ifdef YYSTACK_USE_ALLOCA
  #  if YYSTACK_USE_ALLOCA
  #   ifdef __GNUC__
  #    define YYSTACK_ALLOC __builtin_alloca
  #   elif defined __BUILTIN_VA_ARG_INCR
  #    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
  #   elif defined _AIX
  #    define YYSTACK_ALLOC __alloca
  #   elif defined _MSC_VER
  #    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
  #    define alloca _alloca
  #   else
  #    define YYSTACK_ALLOC alloca
  #    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
  #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
        /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
  #     ifndef EXIT_SUCCESS
  #      define EXIT_SUCCESS 0
  #     endif
  #    endif
  #   endif
  #  endif
  # endif
  
  # ifdef YYSTACK_ALLOC
     /* Pacify GCC's 'empty if-body' warning.  */
  #  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
  #  ifndef YYSTACK_ALLOC_MAXIMUM
      /* The OS might guarantee only one guard page at the bottom of the stack,
         and a page size can be as small as 4096 bytes.  So we cannot safely
         invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
         to allow for a few compiler-allocated temporary stack slots.  */
  #   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
  #  endif
  # else
  #  define YYSTACK_ALLOC YYMALLOC
  #  define YYSTACK_FREE YYFREE
  #  ifndef YYSTACK_ALLOC_MAXIMUM
  #   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
  #  endif
  #  if (defined __cplusplus && ! defined EXIT_SUCCESS \
         && ! ((defined YYMALLOC || defined malloc) \
               && (defined YYFREE || defined free)))
  #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
  #   ifndef EXIT_SUCCESS
  #    define EXIT_SUCCESS 0
  #   endif
  #  endif
  #  ifndef YYMALLOC
  #   define YYMALLOC malloc
  #   if ! defined malloc && ! defined EXIT_SUCCESS
  void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
  #   endif
  #  endif
  #  ifndef YYFREE
  #   define YYFREE free
  #   if ! defined free && ! defined EXIT_SUCCESS
  void free (void *); /* INFRINGES ON USER NAME SPACE */
  #   endif
  #  endif
  # endif
  #endif /* ! defined yyoverflow || YYERROR_VERBOSE */
  
  
  #if (! defined yyoverflow \
       && (! defined __cplusplus \
           || (defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
               && defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
  
  /* A type that is properly aligned for any stack member.  */
  union yyalloc
  {
    yytype_int16 yyss_alloc;
    YYSTYPE yyvs_alloc;
    YYLTYPE yyls_alloc;
  };
  
  /* 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 (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
        + 2 * YYSTACK_GAP_MAXIMUM)
  
  # define YYCOPY_NEEDED 1
  
  /* 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_alloc, Stack)                           \
      do                                                                  \
        {                                                                 \
          YYSIZE_T yynewbytes;                                            \
          YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
          Stack = &yyptr->Stack_alloc;                                    \
          yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
          yyptr += yynewbytes / sizeof (*yyptr);                          \
        }                                                                 \
      while (0)
  
  #endif
  
  #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
  /* Copy COUNT objects from SRC to DST.  The source and destination do
     not overlap.  */
  # ifndef YYCOPY
  #  if defined __GNUC__ && 1 < __GNUC__
  #   define YYCOPY(Dst, Src, Count) \
        __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
  #  else
  #   define YYCOPY(Dst, Src, Count)              \
        do                                        \
          {                                       \
            YYSIZE_T yyi;                         \
            for (yyi = 0; yyi < (Count); yyi++)   \
              (Dst)[yyi] = (Src)[yyi];            \
          }                                       \
        while (0)
  #  endif
  # endif
  #endif /* !YYCOPY_NEEDED */
  
  /* YYFINAL -- State number of the termination state.  */
  #define YYFINAL  2
  /* YYLAST -- Last index in YYTABLE.  */
  #define YYLAST   652
  
  /* YYNTOKENS -- Number of terminals.  */
  #define YYNTOKENS  64
  /* YYNNTS -- Number of nonterminals.  */
  #define YYNNTS  25
  /* YYNRULES -- Number of rules.  */
  #define YYNRULES  118
  /* YYNSTATES -- Number of states.  */
  #define YYNSTATES  185
  
  /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
     by yylex, with out-of-bounds checking.  */
  #define YYUNDEFTOK  2
  #define YYMAXUTOK   296
  
  #define YYTRANSLATE(YYX)                                                \
    ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
  
  /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
     as returned by yylex, without out-of-bounds checking.  */
  static const yytype_uint8 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,    54,     2,     2,     2,    50,    37,     2,
        52,    53,    48,    46,    56,    47,    61,    49,     2,     2,
         2,     2,     2,     2,     2,     2,     2,     2,     2,    62,
        40,    63,    41,     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,    57,     2,    58,    36,     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,    59,    35,    60,    55,     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,    31,    32,    33,    34,
        38,    39,    42,    43,    44,    45,    51
  };
  
  #if YYDEBUG
    /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
  static const yytype_uint16 yyrline[] =
  {
         0,   205,   205,   207,   211,   212,   213,   218,   222,   227,
       232,   240,   253,   256,   259,   265,   268,   269,   269,   284,
       284,   287,   287,   304,   304,   327,   337,   337,   344,   344,
       351,   377,   397,   397,   410,   410,   413,   419,   425,   428,
       434,   437,   440,   446,   455,   460,   464,   471,   482,   493,
       500,   507,   514,   521,   528,   535,   542,   549,   556,   563,
       570,   577,   584,   596,   608,   615,   619,   623,   627,   631,
       637,   642,   650,   651,   655,   656,   659,   661,   667,   672,
       679,   683,   687,   691,   695,   699,   706,   707,   708,   709,
       710,   711,   712,   713,   714,   715,   716,   717,   718,   719,
       720,   721,   722,   723,   724,   725,   726,   727,   728,   729,
       730,   731,   732,   733,   734,   735,   736,   737,   738
  };
  #endif
  
  #if YYDEBUG || YYERROR_VERBOSE || 1
  /* YYTNAME[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", "DEFINED", "ELIF_EXPANDED", "HASH_TOKEN",
    "DEFINE_TOKEN", "FUNC_IDENTIFIER", "OBJ_IDENTIFIER", "ELIF", "ELSE",
    "ENDIF", "ERROR_TOKEN", "IF", "IFDEF", "IFNDEF", "LINE", "PRAGMA",
    "UNDEF", "VERSION_TOKEN", "GARBAGE", "IDENTIFIER", "IF_EXPANDED",
    "INTEGER", "INTEGER_STRING", "LINE_EXPANDED", "NEWLINE", "OTHER",
    "PLACEHOLDER", "SPACE", "PLUS_PLUS", "MINUS_MINUS", "PASTE", "OR", "AND",
    "'|'", "'^'", "'&'", "EQUAL", "NOT_EQUAL", "'<'", "'>'", "LESS_OR_EQUAL",
    "GREATER_OR_EQUAL", "LEFT_SHIFT", "RIGHT_SHIFT", "'+'", "'-'", "'*'",
    "'/'", "'%'", "UNARY", "'('", "')'", "'!'", "'~'", "','", "'['", "']'",
    "'{'", "'}'", "'.'", "';'", "'='", "$accept", "input", "line",
    "expanded_line", "define", "control_line", "$@1", "control_line_success",
    "$@2", "$@3", "$@4", "$@5", "$@6", "$@7", "$@8", "control_line_error",
    "integer_constant", "expression", "identifier_list", "text_line",
    "replacement_list", "junk", "pp_tokens", "preprocessing_token",
    "operator", YY_NULLPTR
  };
  #endif
  
  # ifdef YYPRINT
  /* YYTOKNUM[NUM] -- (External) token number corresponding to the
     (internal) symbol number NUM (which must be that of a token).  */
  static const yytype_uint16 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,   286,   287,   288,   289,   124,    94,    38,   290,   291,
        60,    62,   292,   293,   294,   295,    43,    45,    42,    47,
        37,   296,    40,    41,    33,   126,    44,    91,    93,   123,
       125,    46,    59,    61
  };
  # endif
  
  #define YYPACT_NINF -142
  
  #define yypact_value_is_default(Yystate) \
    (!!((Yystate) == (-142)))
  
  #define YYTABLE_NINF -1
  
  #define yytable_value_is_error(Yytable_value) \
    0
  
    /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
       STATE-NUM.  */
  static const yytype_int16 yypact[] =
  {
      -142,   134,  -142,  -142,   -18,   578,  -142,   -18,  -142,   -15,
      -142,  -142,    26,  -142,  -142,  -142,  -142,  -142,  -142,  -142,
      -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,
      -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,
      -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,  -142,
      -142,  -142,   182,  -142,  -142,  -142,  -142,  -142,   -18,   -18,
       -18,   -18,   -18,  -142,   508,     7,   230,  -142,  -142,     9,
        25,  -142,  -142,  -142,    35,  -142,   -15,   470,  -142,   533,
        81,  -142,  -142,  -142,  -142,  -142,  -142,   -23,  -142,  -142,
      -142,   -18,   -18,   -18,   -18,   -18,   -18,   -18,   -18,   -18,
       -18,   -18,   -18,   -18,   -18,   -18,   -18,   -18,   -18,  -142,
        65,  -142,   278,    38,    58,  -142,  -142,   470,    90,    91,
       470,  -142,    92,    37,   326,  -142,  -142,    89,  -142,   571,
       587,   602,    83,   102,     0,     0,    33,    33,    33,    33,
        20,    20,    60,    60,  -142,  -142,  -142,    66,   470,  -142,
      -142,  -142,  -142,   374,   470,   470,   422,   109,   110,  -142,
      -142,  -142,   -14,   131,   470,  -142,   136,   470,   172,  -142,
      -142,  -142,  -142,   470,     4,  -142,  -142,  -142,   173,   470,
       179,  -142,   175,  -142,  -142
  };
  
    /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
       Performed when YYTABLE does not specify something else to do.  Zero
       means the default is an error.  */
  static const yytype_uint8 yydefact[] =
  {
         2,     0,     1,    83,     0,     0,    80,     0,    81,     0,
        72,    84,    85,   117,   118,   116,   112,   111,   110,   109,
        93,   107,   108,   103,   104,   105,   106,   101,   102,    95,
        96,    94,    99,   100,    88,    89,    98,    97,   114,    86,
        87,    90,    91,    92,   113,   115,     3,     7,     4,    15,
        16,     6,     0,    78,    82,    46,    44,    43,     0,     0,
         0,     0,     0,    45,     0,    19,     0,    32,    34,     0,
        23,    26,    28,    17,     0,    21,     0,     0,    38,     0,
         0,     5,    73,    85,    79,    68,    67,     0,    65,    66,
         9,     0,     0,     0,     0,     0,     0,     0,     0,     0,
         0,     0,     0,     0,     0,     0,     0,     0,     0,    41,
         0,    31,     0,     0,     0,    40,    25,     0,     0,     0,
         0,    39,     0,     0,     0,     8,    10,     0,    69,    47,
        48,    49,    50,    51,    53,    52,    57,    56,    55,    54,
        59,    58,    61,    60,    64,    63,    62,     0,    74,    20,
        30,    33,    35,     0,    76,    76,     0,     0,     0,    36,
        42,    11,     0,     0,    75,    24,     0,    77,     0,    18,
        22,    37,    70,    74,     0,    12,    27,    29,     0,    74,
         0,    13,     0,    71,    14
  };
  
    /* YYPGOTO[NTERM-NUM].  */
  static const yytype_int16 yypgoto[] =
  {
      -142,  -142,  -142,  -142,  -142,    47,  -142,  -142,  -142,  -142,
      -142,  -142,  -142,  -142,  -142,  -142,    -5,    -6,  -142,  -142,
      -141,    49,    -1,   -50,  -142
  };
  
    /* YYDEFGOTO[NTERM-NUM].  */
  static const yytype_int16 yydefgoto[] =
  {
        -1,     1,    46,    47,   149,    48,   120,    49,   110,   122,
       117,   118,   119,   113,   114,    50,    63,    64,   174,    51,
       163,   166,   164,    53,    54
  };
  
    /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
       positive, shift that token.  If negative, reduce the rule whose
       number is the opposite.  If YYTABLE_NINF, syntax error.  */
  static const yytype_uint8 yytable[] =
  {
        52,    79,    84,    55,    80,    56,    57,   172,    56,    57,
        91,    92,    93,    94,    95,    96,    97,    98,    99,   100,
       101,   102,   103,   104,   105,   106,   107,   108,    58,    59,
       128,     5,   178,   109,    60,   115,    61,    62,   182,   173,
        98,    99,   100,   101,   102,   103,   104,   105,   106,   107,
       108,   116,    85,    86,    87,    88,    89,   179,   158,    81,
       180,   121,    84,   159,   151,   112,   104,   105,   106,   107,
       108,   123,   147,   148,    84,   127,   124,   102,   103,   104,
       105,   106,   107,   108,   152,   129,   130,   131,   132,   133,
       134,   135,   136,   137,   138,   139,   140,   141,   142,   143,
       144,   145,   146,    84,    56,    57,    84,   126,   106,   107,
       108,   154,   155,   157,    84,   161,   153,    84,   162,   156,
        95,    96,    97,    98,    99,   100,   101,   102,   103,   104,
       105,   106,   107,   108,     2,   170,   171,     3,     4,     5,
        96,    97,    98,    99,   100,   101,   102,   103,   104,   105,
       106,   107,   108,   167,   167,     6,     7,   175,     8,     9,
        10,    11,   176,    12,    13,    14,    15,    16,    17,    18,
        19,    20,    21,    22,    23,    24,    25,    26,    27,    28,
        29,    30,    31,    32,    33,     3,    34,    35,    36,    37,
        38,    39,    40,    41,    42,    43,    44,    45,   177,   181,
       183,   184,     0,     6,   168,     0,     8,     0,    82,    11,
         0,    83,    13,    14,    15,    16,    17,    18,    19,    20,
        21,    22,    23,    24,    25,    26,    27,    28,    29,    30,
        31,    32,    33,     3,    34,    35,    36,    37,    38,    39,
        40,    41,    42,    43,    44,    45,     0,     0,     0,     0,
         0,     6,     0,     0,     8,     0,   111,    11,     0,    83,
        13,    14,    15,    16,    17,    18,    19,    20,    21,    22,
        23,    24,    25,    26,    27,    28,    29,    30,    31,    32,
        33,     3,    34,    35,    36,    37,    38,    39,    40,    41,
        42,    43,    44,    45,     0,     0,     0,     0,     0,     6,
         0,     0,     8,     0,   150,    11,     0,    83,    13,    14,
        15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
        25,    26,    27,    28,    29,    30,    31,    32,    33,     3,
        34,    35,    36,    37,    38,    39,    40,    41,    42,    43,
        44,    45,     0,     0,     0,     0,     0,     6,     0,     0,
         8,     0,   160,    11,     0,    83,    13,    14,    15,    16,
        17,    18,    19,    20,    21,    22,    23,    24,    25,    26,
        27,    28,    29,    30,    31,    32,    33,     3,    34,    35,
        36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
         0,     0,     0,     0,     0,     6,     0,     0,     8,     0,
       165,    11,     0,    83,    13,    14,    15,    16,    17,    18,
        19,    20,    21,    22,    23,    24,    25,    26,    27,    28,
        29,    30,    31,    32,    33,     3,    34,    35,    36,    37,
        38,    39,    40,    41,    42,    43,    44,    45,     0,     0,
         0,     0,     0,     6,     0,     0,     8,     0,   169,    11,
         0,    83,    13,    14,    15,    16,    17,    18,    19,    20,
        21,    22,    23,    24,    25,    26,    27,    28,    29,    30,
        31,    32,    33,     3,    34,    35,    36,    37,    38,    39,
        40,    41,    42,    43,    44,    45,     0,     0,     0,     0,
         0,     6,     0,     0,     8,     0,     0,    11,     0,    83,
        13,    14,    15,    16,    17,    18,    19,    20,    21,    22,
        23,    24,    25,    26,    27,    28,    29,    30,    31,    32,
        33,     0,    34,    35,    36,    37,    38,    39,    40,    41,
        42,    43,    44,    45,    90,     0,     0,     0,     0,     0,
         0,    91,    92,    93,    94,    95,    96,    97,    98,    99,
       100,   101,   102,   103,   104,   105,   106,   107,   108,   125,
         0,     0,     0,     0,     0,     0,    91,    92,    93,    94,
        95,    96,    97,    98,    99,   100,   101,   102,   103,   104,
       105,   106,   107,   108,    65,     0,     0,    66,    67,    68,
        69,    70,    71,    72,    73,    74,    75,    76,    77,     0,
         0,     0,     0,     0,    78,    92,    93,    94,    95,    96,
        97,    98,    99,   100,   101,   102,   103,   104,   105,   106,
       107,   108,    93,    94,    95,    96,    97,    98,    99,   100,
       101,   102,   103,   104,   105,   106,   107,   108,    94,    95,
        96,    97,    98,    99,   100,   101,   102,   103,   104,   105,
       106,   107,   108
  };
  
  static const yytype_int16 yycheck[] =
  {
         1,     7,    52,    21,     9,    23,    24,    21,    23,    24,
        33,    34,    35,    36,    37,    38,    39,    40,    41,    42,
        43,    44,    45,    46,    47,    48,    49,    50,    46,    47,
        53,     5,   173,    26,    52,    26,    54,    55,   179,    53,
        40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
        50,    26,    58,    59,    60,    61,    62,    53,    21,    12,
        56,    26,   112,    26,    26,    66,    46,    47,    48,    49,
        50,    76,     7,     8,   124,    80,    77,    44,    45,    46,
        47,    48,    49,    50,    26,    91,    92,    93,    94,    95,
        96,    97,    98,    99,   100,   101,   102,   103,   104,   105,
       106,   107,   108,   153,    23,    24,   156,    26,    48,    49,
        50,    21,    21,    21,   164,    26,   117,   167,    52,   120,
        37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
        47,    48,    49,    50,     0,    26,    26,     3,     4,     5,
        38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
        48,    49,    50,   154,   155,    21,    22,    26,    24,    25,
        26,    27,    26,    29,    30,    31,    32,    33,    34,    35,
        36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
        46,    47,    48,    49,    50,     3,    52,    53,    54,    55,
        56,    57,    58,    59,    60,    61,    62,    63,    26,    26,
        21,    26,    -1,    21,   155,    -1,    24,    -1,    26,    27,
        -1,    29,    30,    31,    32,    33,    34,    35,    36,    37,
        38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
        48,    49,    50,     3,    52,    53,    54,    55,    56,    57,
        58,    59,    60,    61,    62,    63,    -1,    -1,    -1,    -1,
        -1,    21,    -1,    -1,    24,    -1,    26,    27,    -1,    29,
        30,    31,    32,    33,    34,    35,    36,    37,    38,    39,
        40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
        50,     3,    52,    53,    54,    55,    56,    57,    58,    59,
        60,    61,    62,    63,    -1,    -1,    -1,    -1,    -1,    21,
        -1,    -1,    24,    -1,    26,    27,    -1,    29,    30,    31,
        32,    33,    34,    35,    36,    37,    38,    39,    40,    41,
        42,    43,    44,    45,    46,    47,    48,    49,    50,     3,
        52,    53,    54,    55,    56,    57,    58,    59,    60,    61,
        62,    63,    -1,    -1,    -1,    -1,    -1,    21,    -1,    -1,
        24,    -1,    26,    27,    -1,    29,    30,    31,    32,    33,
        34,    35,    36,    37,    38,    39,    40,    41,    42,    43,
        44,    45,    46,    47,    48,    49,    50,     3,    52,    53,
        54,    55,    56,    57,    58,    59,    60,    61,    62,    63,
        -1,    -1,    -1,    -1,    -1,    21,    -1,    -1,    24,    -1,
        26,    27,    -1,    29,    30,    31,    32,    33,    34,    35,
        36,    37,    38,    39,    40,    41,    42,    43,    44,    45,
        46,    47,    48,    49,    50,     3,    52,    53,    54,    55,
        56,    57,    58,    59,    60,    61,    62,    63,    -1,    -1,
        -1,    -1,    -1,    21,    -1,    -1,    24,    -1,    26,    27,
        -1,    29,    30,    31,    32,    33,    34,    35,    36,    37,
        38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
        48,    49,    50,     3,    52,    53,    54,    55,    56,    57,
        58,    59,    60,    61,    62,    63,    -1,    -1,    -1,    -1,
        -1,    21,    -1,    -1,    24,    -1,    -1,    27,    -1,    29,
        30,    31,    32,    33,    34,    35,    36,    37,    38,    39,
        40,    41,    42,    43,    44,    45,    46,    47,    48,    49,
        50,    -1,    52,    53,    54,    55,    56,    57,    58,    59,
        60,    61,    62,    63,    26,    -1,    -1,    -1,    -1,    -1,
        -1,    33,    34,    35,    36,    37,    38,    39,    40,    41,
        42,    43,    44,    45,    46,    47,    48,    49,    50,    26,
        -1,    -1,    -1,    -1,    -1,    -1,    33,    34,    35,    36,
        37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
        47,    48,    49,    50,     6,    -1,    -1,     9,    10,    11,
        12,    13,    14,    15,    16,    17,    18,    19,    20,    -1,
        -1,    -1,    -1,    -1,    26,    34,    35,    36,    37,    38,
        39,    40,    41,    42,    43,    44,    45,    46,    47,    48,
        49,    50,    35,    36,    37,    38,    39,    40,    41,    42,
        43,    44,    45,    46,    47,    48,    49,    50,    36,    37,
        38,    39,    40,    41,    42,    43,    44,    45,    46,    47,
        48,    49,    50
  };
  
    /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
       symbol of state STATE-NUM.  */
  static const yytype_uint8 yystos[] =
  {
         0,    65,     0,     3,     4,     5,    21,    22,    24,    25,
        26,    27,    29,    30,    31,    32,    33,    34,    35,    36,
        37,    38,    39,    40,    41,    42,    43,    44,    45,    46,
        47,    48,    49,    50,    52,    53,    54,    55,    56,    57,
        58,    59,    60,    61,    62,    63,    66,    67,    69,    71,
        79,    83,    86,    87,    88,    21,    23,    24,    46,    47,
        52,    54,    55,    80,    81,     6,     9,    10,    11,    12,
        13,    14,    15,    16,    17,    18,    19,    20,    26,    81,
        80,    69,    26,    29,    87,    81,    81,    81,    81,    81,
        26,    33,    34,    35,    36,    37,    38,    39,    40,    41,
        42,    43,    44,    45,    46,    47,    48,    49,    50,    26,
        72,    26,    86,    77,    78,    26,    26,    74,    75,    76,
        70,    26,    73,    80,    86,    26,    26,    80,    53,    81,
        81,    81,    81,    81,    81,    81,    81,    81,    81,    81,
        81,    81,    81,    81,    81,    81,    81,     7,     8,    68,
        26,    26,    26,    86,    21,    21,    86,    21,    21,    26,
        26,    26,    52,    84,    86,    26,    85,    86,    85,    26,
        26,    26,    21,    53,    82,    26,    26,    26,    84,    53,
        56,    26,    84,    21,    26
  };
  
    /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
  static const yytype_uint8 yyr1[] =
  {
         0,    64,    65,    65,    66,    66,    66,    66,    67,    67,
        67,    67,    68,    68,    68,    69,    69,    70,    69,    72,
        71,    73,    71,    74,    71,    71,    75,    71,    76,    71,
        71,    71,    77,    71,    78,    71,    71,    71,    71,    71,
        79,    79,    79,    80,    80,    81,    81,    81,    81,    81,
        81,    81,    81,    81,    81,    81,    81,    81,    81,    81,
        81,    81,    81,    81,    81,    81,    81,    81,    81,    81,
        82,    82,    83,    83,    84,    84,    85,    85,    86,    86,
        87,    87,    87,    87,    87,    87,    88,    88,    88,    88,
        88,    88,    88,    88,    88,    88,    88,    88,    88,    88,
        88,    88,    88,    88,    88,    88,    88,    88,    88,    88,
        88,    88,    88,    88,    88,    88,    88,    88,    88
  };
  
    /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */
  static const yytype_uint8 yyr2[] =
  {
         0,     2,     0,     2,     1,     2,     1,     1,     3,     3,
         3,     4,     3,     5,     6,     1,     1,     0,     5,     0,
         4,     0,     5,     0,     5,     3,     0,     6,     0,     6,
         4,     3,     0,     4,     0,     4,     4,     5,     2,     3,
         3,     3,     4,     1,     1,     1,     1,     3,     3,     3,
         3,     3,     3,     3,     3,     3,     3,     3,     3,     3,
         3,     3,     3,     3,     3,     2,     2,     2,     2,     3,
         1,     3,     1,     2,     0,     1,     0,     1,     1,     2,
         1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
         1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
         1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
         1,     1,     1,     1,     1,     1,     1,     1,     1
  };
  
  
  #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
  
  
  #define YYRECOVERING()  (!!yyerrstatus)
  
  #define YYBACKUP(Token, Value)                                  \
  do                                                              \
    if (yychar == YYEMPTY)                                        \
      {                                                           \
        yychar = (Token);                                         \
        yylval = (Value);                                         \
        YYPOPSTACK (yylen);                                       \
        yystate = *yyssp;                                         \
        goto yybackup;                                            \
      }                                                           \
    else                                                          \
      {                                                           \
        yyerror (&yylloc, parser, YY_("syntax error: cannot back up")); \
        YYERROR;                                                  \
      }                                                           \
  while (0)
  
  /* Error token number */
  #define YYTERROR        1
  #define YYERRCODE       256
  
  
  /* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
     If N is 0, then set CURRENT to the empty location which ends
     the previous symbol: RHS[0] (always defined).  */
  
  #ifndef YYLLOC_DEFAULT
  # define YYLLOC_DEFAULT(Current, Rhs, N)                                \
      do                                                                  \
        if (N)                                                            \
          {                                                               \
            (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
            (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
            (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
            (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
          }                                                               \
        else                                                              \
          {                                                               \
            (Current).first_line   = (Current).last_line   =              \
              YYRHSLOC (Rhs, 0).last_line;                                \
            (Current).first_column = (Current).last_column =              \
              YYRHSLOC (Rhs, 0).last_column;                              \
          }                                                               \
      while (0)
  #endif
  
  #define YYRHSLOC(Rhs, K) ((Rhs)[K])
  
  
  /* 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)
  
  
  /* YY_LOCATION_PRINT -- Print the location on the stream.
     This macro was not mandated originally: define only if we know
     we won't break user code: when these are the locations we know.  */
  
  #ifndef YY_LOCATION_PRINT
  # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
  
  /* Print *YYLOCP on YYO.  Private, do not rely on its existence. */
  
  YY_ATTRIBUTE_UNUSED
  static unsigned
  yy_location_print_ (FILE *yyo, YYLTYPE const * const yylocp)
  {
    unsigned res = 0;
    int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
    if (0 <= yylocp->first_line)
      {
        res += YYFPRINTF (yyo, "%d", yylocp->first_line);
        if (0 <= yylocp->first_column)
          res += YYFPRINTF (yyo, ".%d", yylocp->first_column);
      }
    if (0 <= yylocp->last_line)
      {
        if (yylocp->first_line < yylocp->last_line)
          {
            res += YYFPRINTF (yyo, "-%d", yylocp->last_line);
            if (0 <= end_col)
              res += YYFPRINTF (yyo, ".%d", end_col);
          }
        else if (0 <= end_col && yylocp->first_column < end_col)
          res += YYFPRINTF (yyo, "-%d", end_col);
      }
    return res;
   }
  
  #  define YY_LOCATION_PRINT(File, Loc)          \
    yy_location_print_ (File, &(Loc))
  
  # else
  #  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
  # endif
  #endif
  
  
  # define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
  do {                                                                      \
    if (yydebug)                                                            \
      {                                                                     \
        YYFPRINTF (stderr, "%s ", Title);                                   \
        yy_symbol_print (stderr,                                            \
                    Type, Value, Location, parser); \
        YYFPRINTF (stderr, "\n");                                           \
      }                                                                     \
  } while (0)
  
  
  /*----------------------------------------.
  | Print this symbol's value on YYOUTPUT.  |
  `----------------------------------------*/
  
  static void
  yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp, glcpp_parser_t *parser)
  {
    FILE *yyo = yyoutput;
    YYUSE (yyo);
    YYUSE (yylocationp);
    YYUSE (parser);
    if (!yyvaluep)
      return;
  # ifdef YYPRINT
    if (yytype < YYNTOKENS)
      YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
  # endif
    YYUSE (yytype);
  }
  
  
  /*--------------------------------.
  | Print this symbol on YYOUTPUT.  |
  `--------------------------------*/
  
  static void
  yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp, glcpp_parser_t *parser)
  {
    YYFPRINTF (yyoutput, "%s %s (",
               yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
  
    YY_LOCATION_PRINT (yyoutput, *yylocationp);
    YYFPRINTF (yyoutput, ": ");
    yy_symbol_value_print (yyoutput, yytype, yyvaluep, yylocationp, parser);
    YYFPRINTF (yyoutput, ")");
  }
  
  /*------------------------------------------------------------------.
  | yy_stack_print -- Print the state stack from its BOTTOM up to its |
  | TOP (included).                                                   |
  `------------------------------------------------------------------*/
  
  static void
  yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop)
  {
    YYFPRINTF (stderr, "Stack now");
    for (; yybottom <= yytop; yybottom++)
      {
        int yybot = *yybottom;
        YYFPRINTF (stderr, " %d", yybot);
      }
    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.  |
  `------------------------------------------------*/
  
  static void
  yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, YYLTYPE *yylsp, int yyrule, glcpp_parser_t *parser)
  {
    unsigned long int yylno = yyrline[yyrule];
    int yynrhs = yyr2[yyrule];
    int yyi;
    YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
               yyrule - 1, yylno);
    /* The symbols being reduced.  */
    for (yyi = 0; yyi < yynrhs; yyi++)
      {
        YYFPRINTF (stderr, "   $%d = ", yyi + 1);
        yy_symbol_print (stderr,
                         yystos[yyssp[yyi + 1 - yynrhs]],
                         &(yyvsp[(yyi + 1) - (yynrhs)])
                         , &(yylsp[(yyi + 1) - (yynrhs)])                       , parser);
        YYFPRINTF (stderr, "\n");
      }
  }
  
  # define YY_REDUCE_PRINT(Rule)          \
  do {                                    \
    if (yydebug)                          \
      yy_reduce_print (yyssp, yyvsp, yylsp, Rule, parser); \
  } 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 YY_SYMBOL_PRINT(Title, Type, 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
     YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
     evaluated with infinite-precision integer arithmetic.  */
  
  #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
  yystrlen (const char *yystr)
  {
    YYSIZE_T yylen;
    for (yylen = 0; yystr[yylen]; yylen++)
      continue;
    return yylen;
  }
  #  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 *
  yystpcpy (char *yydest, const char *yysrc)
  {
    char *yyd = yydest;
    const char *yys = yysrc;
  
    while ((*yyd++ = *yys++) != '\0')
      continue;
  
    return yyd - 1;
  }
  #  endif
  # endif
  
  # ifndef yytnamerr
  /* Copy to YYRES the contents of YYSTR after stripping away unnecessary
     quotes and backslashes, so that it's suitable for yyerror.  The
     heuristic is that double-quoting is unnecessary unless the string
     contains an apostrophe, a comma, or backslash (other than
     backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
     null, do not copy; instead, return the length of what the result
     would have been.  */
  static YYSIZE_T
  yytnamerr (char *yyres, const char *yystr)
  {
    if (*yystr == '"')
      {
        YYSIZE_T yyn = 0;
        char const *yyp = yystr;
  
        for (;;)
          switch (*++yyp)
            {
            case '\'':
            case ',':
              goto do_not_strip_quotes;
  
            case '\\':
              if (*++yyp != '\\')
                goto do_not_strip_quotes;
              /* Fall through.  */
            default:
              if (yyres)
                yyres[yyn] = *yyp;
              yyn++;
              break;
  
            case '"':
              if (yyres)
                yyres[yyn] = '\0';
              return yyn;
            }
      do_not_strip_quotes: ;
      }
  
    if (! yyres)
      return yystrlen (yystr);
  
    return yystpcpy (yyres, yystr) - yyres;
  }
  # endif
  
  /* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
     about the unexpected token YYTOKEN for the state stack whose top is
     YYSSP.
  
     Return 0 if *YYMSG was successfully written.  Return 1 if *YYMSG is
     not large enough to hold the message.  In that case, also set
     *YYMSG_ALLOC to the required number of bytes.  Return 2 if the
     required number of bytes is too large to store.  */
  static int
  yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                  yytype_int16 *yyssp, int yytoken)
  {
    YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
    YYSIZE_T yysize = yysize0;
    enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
    /* Internationalized format string. */
    const char *yyformat = YY_NULLPTR;
    /* Arguments of yyformat. */
    char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
    /* Number of reported tokens (one for the "unexpected", one per
       "expected"). */
    int yycount = 0;
  
    /* There are many possibilities here to consider:
       - If this state is a consistent state with a default action, then
         the only way this function was invoked is if the default action
         is an error action.  In that case, don't check for expected
         tokens because there are none.
       - The only way there can be no lookahead present (in yychar) is if
         this state is a consistent state with a default action.  Thus,
         detecting the absence of a lookahead is sufficient to determine
         that there is no unexpected or expected token to report.  In that
         case, just report a simple "syntax error".
       - Don't assume there isn't a lookahead just because this state is a
         consistent state with a default action.  There might have been a
         previous inconsistent state, consistent state with a non-default
         action, or user semantic action that manipulated yychar.
       - Of course, the expected token list depends on states to have
         correct lookahead information, and it depends on the parser not
         to perform extra reductions after fetching a lookahead from the
         scanner and before detecting a syntax error.  Thus, state merging
         (from LALR or IELR) and default reductions corrupt the expected
         token list.  However, the list is correct for canonical LR with
         one exception: it will still contain any token that will not be
         accepted due to an error action in a later state.
    */
    if (yytoken != YYEMPTY)
      {
        int yyn = yypact[*yyssp];
        yyarg[yycount++] = yytname[yytoken];
        if (!yypact_value_is_default (yyn))
          {
            /* Start YYX at -YYN if negative to avoid negative indexes in
               YYCHECK.  In other words, skip the first -YYN actions for
               this state because they are default actions.  */
            int yyxbegin = yyn < 0 ? -yyn : 0;
            /* Stay within bounds of both yycheck and yytname.  */
            int yychecklim = YYLAST - yyn + 1;
            int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
            int yyx;
  
            for (yyx = yyxbegin; yyx < yyxend; ++yyx)
              if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
                  && !yytable_value_is_error (yytable[yyx + yyn]))
                {
                  if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
                    {
                      yycount = 1;
                      yysize = yysize0;
                      break;
                    }
                  yyarg[yycount++] = yytname[yyx];
                  {
                    YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
                    if (! (yysize <= yysize1
                           && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
                      return 2;
                    yysize = yysize1;
                  }
                }
          }
      }
  
    switch (yycount)
      {
  # define YYCASE_(N, S)                      \
        case N:                               \
          yyformat = S;                       \
        break
        YYCASE_(0, YY_("syntax error"));
        YYCASE_(1, YY_("syntax error, unexpected %s"));
        YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
        YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
        YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
        YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
  # undef YYCASE_
      }
  
    {
      YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
      if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
        return 2;
      yysize = yysize1;
    }
  
    if (*yymsg_alloc < yysize)
      {
        *yymsg_alloc = 2 * yysize;
        if (! (yysize <= *yymsg_alloc
               && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM))
          *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM;
        return 1;
      }
  
    /* Avoid sprintf, as that infringes on the user's name space.
       Don't have undefined behavior even if the translation
       produced a string with the wrong number of "%s"s.  */
    {
      char *yyp = *yymsg;
      int yyi = 0;
      while ((*yyp = *yyformat) != '\0')
        if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
          {
            yyp += yytnamerr (yyp, yyarg[yyi++]);
            yyformat += 2;
          }
        else
          {
            yyp++;
            yyformat++;
          }
    }
    return 0;
  }
  #endif /* YYERROR_VERBOSE */
  
  /*-----------------------------------------------.
  | Release the memory associated to this symbol.  |
  `-----------------------------------------------*/
  
  static void
  yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp, glcpp_parser_t *parser)
  {
    YYUSE (yyvaluep);
    YYUSE (yylocationp);
    YYUSE (parser);
    if (!yymsg)
      yymsg = "Deleting";
    YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
  
    YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
    YYUSE (yytype);
    YY_IGNORE_MAYBE_UNINITIALIZED_END
  }
  
  
  
  
  /*----------.
  | yyparse.  |
  `----------*/
  
  int
  yyparse (glcpp_parser_t *parser)
  {
  /* The lookahead symbol.  */
  int yychar;
  
  
  /* The semantic value of the lookahead symbol.  */
  /* Default value used for initialization, for pacifying older GCCs
     or non-GCC compilers.  */
  YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
  YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);
  
  /* Location data for the lookahead symbol.  */
  static YYLTYPE yyloc_default
  # if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
    = { 1, 1, 1, 1 }
  # endif
  ;
  YYLTYPE yylloc = yyloc_default;
  
      /* Number of syntax errors so far.  */
      int yynerrs;
  
      int yystate;
      /* Number of tokens to shift before error messages enabled.  */
      int yyerrstatus;
  
      /* The stacks and their tools:
         'yyss': related to states.
         'yyvs': related to semantic values.
         'yyls': related to locations.
  
         Refer to the stacks through separate pointers, to allow yyoverflow
         to reallocate them elsewhere.  */
  
      /* The state stack.  */
      yytype_int16 yyssa[YYINITDEPTH];
      yytype_int16 *yyss;
      yytype_int16 *yyssp;
  
      /* The semantic value stack.  */
      YYSTYPE yyvsa[YYINITDEPTH];
      YYSTYPE *yyvs;
      YYSTYPE *yyvsp;
  
      /* The location stack.  */
      YYLTYPE yylsa[YYINITDEPTH];
      YYLTYPE *yyls;
      YYLTYPE *yylsp;
  
      /* The locations where the error started and ended.  */
      YYLTYPE yyerror_range[3];
  
      YYSIZE_T yystacksize;
  
    int yyn;
    int yyresult;
    /* Lookahead token as an internal (translated) token number.  */
    int yytoken = 0;
    /* The variables used to return semantic value and location from the
       action routines.  */
    YYSTYPE yyval;
    YYLTYPE yyloc;
  
  #if YYERROR_VERBOSE
    /* Buffer for error messages, and its allocated size.  */
    char yymsgbuf[128];
    char *yymsg = yymsgbuf;
    YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
  #endif
  
  #define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N), yylsp -= (N))
  
    /* The number of symbols on the RHS of the reduced rule.
       Keep to zero when no symbol should be popped.  */
    int yylen = 0;
  
    yyssp = yyss = yyssa;
    yyvsp = yyvs = yyvsa;
    yylsp = yyls = yylsa;
    yystacksize = YYINITDEPTH;
  
    YYDPRINTF ((stderr, "Starting parse\n"));
  
    yystate = 0;
    yyerrstatus = 0;
    yynerrs = 0;
    yychar = YYEMPTY; /* Cause a token to be read.  */
  
  /* User initialization code.  */
  #line 165 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1429  */
  {
  	yylloc.first_line = 1;
  	yylloc.first_column = 1;
  	yylloc.last_line = 1;
  	yylloc.last_column = 1;
  	yylloc.source = 0;
  }
  
  #line 1568 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1429  */
    yylsp[0] = yylloc;
    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 reallocate the stack.  Use copies of
             these so that the &'s don't force the real ones into
             memory.  */
          YYSTYPE *yyvs1 = yyvs;
          yytype_int16 *yyss1 = yyss;
          YYLTYPE *yyls1 = yyls;
  
          /* 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 (YY_("memory exhausted"),
                      &yyss1, yysize * sizeof (*yyssp),
                      &yyvs1, yysize * sizeof (*yyvsp),
                      &yyls1, yysize * sizeof (*yylsp),
                      &yystacksize);
  
          yyls = yyls1;
          yyss = yyss1;
          yyvs = yyvs1;
        }
  #else /* no yyoverflow */
  # ifndef YYSTACK_RELOCATE
        goto yyexhaustedlab;
  # else
        /* Extend the stack our own way.  */
        if (YYMAXDEPTH <= yystacksize)
          goto yyexhaustedlab;
        yystacksize *= 2;
        if (YYMAXDEPTH < yystacksize)
          yystacksize = YYMAXDEPTH;
  
        {
          yytype_int16 *yyss1 = yyss;
          union yyalloc *yyptr =
            (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
          if (! yyptr)
            goto yyexhaustedlab;
          YYSTACK_RELOCATE (yyss_alloc, yyss);
          YYSTACK_RELOCATE (yyvs_alloc, yyvs);
          YYSTACK_RELOCATE (yyls_alloc, yyls);
  #  undef YYSTACK_RELOCATE
          if (yyss1 != yyssa)
            YYSTACK_FREE (yyss1);
        }
  # endif
  #endif /* no yyoverflow */
  
        yyssp = yyss + yysize - 1;
        yyvsp = yyvs + yysize - 1;
        yylsp = yyls + 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));
  
    if (yystate == YYFINAL)
      YYACCEPT;
  
    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.  */
  
    /* First try to decide what to do without reference to lookahead token.  */
    yyn = yypact[yystate];
    if (yypact_value_is_default (yyn))
      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 (&yylval, &yylloc, parser);
      }
  
    if (yychar <= YYEOF)
      {
        yychar = yytoken = YYEOF;
        YYDPRINTF ((stderr, "Now at end of input.\n"));
      }
    else
      {
        yytoken = YYTRANSLATE (yychar);
        YY_SYMBOL_PRINT ("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 (yytable_value_is_error (yyn))
          goto yyerrlab;
        yyn = -yyn;
        goto yyreduce;
      }
  
    /* Count tokens shifted since error; after three, turn off error
       status.  */
    if (yyerrstatus)
      yyerrstatus--;
  
    /* Shift the lookahead token.  */
    YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
  
    /* Discard the shifted token.  */
    yychar = YYEMPTY;
  
    yystate = yyn;
    YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
    *++yyvsp = yylval;
    YY_IGNORE_MAYBE_UNINITIALIZED_END
    *++yylsp = yylloc;
    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];
  
    /* Default location.  */
    YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
    YY_REDUCE_PRINT (yyn);
    switch (yyn)
      {
          case 6:
  #line 213 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		_glcpp_parser_print_expanded_token_list (parser, (yyvsp[0].token_list));
  		ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length, "\n");
  		ralloc_free ((yyvsp[0].token_list));
  	}
  #line 1761 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 8:
  #line 222 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (parser->is_gles && (yyvsp[-1].expression_value).undefined_macro)
  			glcpp_error(& (yylsp[-2]), parser, "undefined macro %s in expression (illegal in GLES)", (yyvsp[-1].expression_value).undefined_macro);
  		_glcpp_parser_skip_stack_push_if (parser, & (yylsp[-2]), (yyvsp[-1].expression_value).value);
  	}
  #line 1771 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 9:
  #line 227 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (parser->is_gles && (yyvsp[-1].expression_value).undefined_macro)
  			glcpp_error(& (yylsp[-2]), parser, "undefined macro %s in expression (illegal in GLES)", (yyvsp[-1].expression_value).undefined_macro);
  		_glcpp_parser_skip_stack_change_if (parser, & (yylsp[-2]), "elif", (yyvsp[-1].expression_value).value);
  	}
  #line 1781 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 10:
  #line 232 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		parser->has_new_line_number = 1;
  		parser->new_line_number = (yyvsp[-1].ival);
  		ralloc_asprintf_rewrite_tail (&parser->output,
  					      &parser->output_length,
  					      "#line %" PRIiMAX "\n",
  					      (yyvsp[-1].ival));
  	}
  #line 1794 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 11:
  #line 240 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		parser->has_new_line_number = 1;
  		parser->new_line_number = (yyvsp[-2].ival);
  		parser->has_new_source_number = 1;
  		parser->new_source_number = (yyvsp[-1].ival);
  		ralloc_asprintf_rewrite_tail (&parser->output,
  					      &parser->output_length,
  					      "#line %" PRIiMAX " %" PRIiMAX "\n",
  					      (yyvsp[-2].ival), (yyvsp[-1].ival));
  	}
  #line 1809 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 12:
  #line 253 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		_define_object_macro (parser, & (yylsp[-2]), (yyvsp[-2].str), (yyvsp[-1].token_list));
  	}
  #line 1817 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 13:
  #line 256 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		_define_function_macro (parser, & (yylsp[-4]), (yyvsp[-4].str), NULL, (yyvsp[-1].token_list));
  	}
  #line 1825 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 14:
  #line 259 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		_define_function_macro (parser, & (yylsp[-5]), (yyvsp[-5].str), (yyvsp[-3].string_list), (yyvsp[-1].token_list));
  	}
  #line 1833 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 15:
  #line 265 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length, "\n");
  	}
  #line 1841 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 17:
  #line 269 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1849 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 18:
  #line 271 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  
  		if (parser->skip_stack == NULL ||
  		    parser->skip_stack->type == SKIP_NO_SKIP)
  		{
  			_glcpp_parser_expand_and_lex_from (parser,
  							   LINE_EXPANDED, (yyvsp[-1].token_list),
  							   EXPANSION_MODE_IGNORE_DEFINED);
  		}
  	}
  #line 1864 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 19:
  #line 284 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1872 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 21:
  #line 287 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1880 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 22:
  #line 289 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		macro_t *macro;
  		if (strcmp("__LINE__", (yyvsp[-1].str)) == 0
  		    || strcmp("__FILE__", (yyvsp[-1].str)) == 0
  		    || strcmp("__VERSION__", (yyvsp[-1].str)) == 0)
  			glcpp_error(& (yylsp[-4]), parser, "Built-in (pre-defined)"
  				    " macro names can not be undefined.");
  
  		macro = hash_table_find (parser->defines, (yyvsp[-1].str));
  		if (macro) {
  			hash_table_remove (parser->defines, (yyvsp[-1].str));
  			ralloc_free (macro);
  		}
  		ralloc_free ((yyvsp[-1].str));
  	}
  #line 1900 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 23:
  #line 304 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1908 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 24:
  #line 306 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		/* Be careful to only evaluate the 'if' expression if
  		 * we are not skipping. When we are skipping, we
  		 * simply push a new 0-valued 'if' onto the skip
  		 * stack.
  		 *
  		 * This avoids generating diagnostics for invalid
  		 * expressions that are being skipped. */
  		if (parser->skip_stack == NULL ||
  		    parser->skip_stack->type == SKIP_NO_SKIP)
  		{
  			_glcpp_parser_expand_and_lex_from (parser,
  							   IF_EXPANDED, (yyvsp[-1].token_list),
  							   EXPANSION_MODE_EVALUATE_DEFINED);
  		}	
  		else
  		{
  			_glcpp_parser_skip_stack_push_if (parser, & (yylsp[-4]), 0);
  			parser->skip_stack->type = SKIP_TO_ENDIF;
  		}
  	}
  #line 1934 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 25:
  #line 327 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		/* #if without an expression is only an error if we
  		 *  are not skipping */
  		if (parser->skip_stack == NULL ||
  		    parser->skip_stack->type == SKIP_NO_SKIP)
  		{
  			glcpp_error(& (yylsp[-2]), parser, "#if with no expression");
  		}	
  		_glcpp_parser_skip_stack_push_if (parser, & (yylsp[-2]), 0);
  	}
  #line 1949 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 26:
  #line 337 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1957 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 27:
  #line 339 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		macro_t *macro = hash_table_find (parser->defines, (yyvsp[-2].str));
  		ralloc_free ((yyvsp[-2].str));
  		_glcpp_parser_skip_stack_push_if (parser, & (yylsp[-5]), macro != NULL);
  	}
  #line 1967 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 28:
  #line 344 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 1975 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 29:
  #line 346 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		macro_t *macro = hash_table_find (parser->defines, (yyvsp[-2].str));
  		ralloc_free ((yyvsp[-2].str));
  		_glcpp_parser_skip_stack_push_if (parser, & (yylsp[-3]), macro == NULL);
  	}
  #line 1985 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 30:
  #line 351 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		/* Be careful to only evaluate the 'elif' expression
  		 * if we are not skipping. When we are skipping, we
  		 * simply change to a 0-valued 'elif' on the skip
  		 * stack.
  		 *
  		 * This avoids generating diagnostics for invalid
  		 * expressions that are being skipped. */
  		if (parser->skip_stack &&
  		    parser->skip_stack->type == SKIP_TO_ELSE)
  		{
  			_glcpp_parser_expand_and_lex_from (parser,
  							   ELIF_EXPANDED, (yyvsp[-1].token_list),
  							   EXPANSION_MODE_EVALUATE_DEFINED);
  		}
  		else if (parser->skip_stack &&
  		    parser->skip_stack->has_else)
  		{
  			glcpp_error(& (yylsp[-3]), parser, "#elif after #else");
  		}
  		else
  		{
  			_glcpp_parser_skip_stack_change_if (parser, & (yylsp[-3]),
  							    "elif", 0);
  		}
  	}
  #line 2016 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 31:
  #line 377 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		/* #elif without an expression is an error unless we
  		 * are skipping. */
  		if (parser->skip_stack &&
  		    parser->skip_stack->type == SKIP_TO_ELSE)
  		{
  			glcpp_error(& (yylsp[-2]), parser, "#elif with no expression");
  		}
  		else if (parser->skip_stack &&
  		    parser->skip_stack->has_else)
  		{
  			glcpp_error(& (yylsp[-2]), parser, "#elif after #else");
  		}
  		else
  		{
  			_glcpp_parser_skip_stack_change_if (parser, & (yylsp[-2]),
  							    "elif", 0);
  			glcpp_warning(& (yylsp[-2]), parser, "ignoring illegal #elif without expression");
  		}
  	}
  #line 2041 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 32:
  #line 397 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { parser->lexing_directive = 1; }
  #line 2047 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 33:
  #line 397 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (parser->skip_stack &&
  		    parser->skip_stack->has_else)
  		{
  			glcpp_error(& (yylsp[-3]), parser, "multiple #else");
  		}
  		else
  		{
  			_glcpp_parser_skip_stack_change_if (parser, & (yylsp[-3]), "else", 1);
  			if (parser->skip_stack)
  				parser->skip_stack->has_else = true;
  		}
  	}
  #line 2065 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 34:
  #line 410 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		_glcpp_parser_skip_stack_pop (parser, & (yylsp[-1]));
  	}
  #line 2073 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 36:
  #line 413 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (parser->version_resolved) {
  			glcpp_error(& (yylsp[-3]), parser, "#version must appear on the first line");
  		}
  		_glcpp_parser_handle_version_declaration(parser, (yyvsp[-1].ival), NULL, true);
  	}
  #line 2084 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 37:
  #line 419 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (parser->version_resolved) {
  			glcpp_error(& (yylsp[-4]), parser, "#version must appear on the first line");
  		}
  		_glcpp_parser_handle_version_declaration(parser, (yyvsp[-2].ival), (yyvsp[-1].str), true);
  	}
  #line 2095 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 38:
  #line 425 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_parser_resolve_implicit_version(parser);
  	}
  #line 2103 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 39:
  #line 428 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length, "#%s", (yyvsp[-1].str));
  	}
  #line 2111 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 40:
  #line 434 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_error(& (yylsp[-2]), parser, "#%s", (yyvsp[-1].str));
  	}
  #line 2119 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 41:
  #line 437 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_error (& (yylsp[-2]), parser, "#define without macro name");
  	}
  #line 2127 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 42:
  #line 440 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_error (& (yylsp[-3]), parser, "Illegal non-directive after #");
  	}
  #line 2135 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 43:
  #line 446 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if (strlen ((yyvsp[0].str)) >= 3 && strncmp ((yyvsp[0].str), "0x", 2) == 0) {
  			(yyval.ival) = (int)strtoll ((yyvsp[0].str) + 2, NULL, 16);
  		} else if ((yyvsp[0].str)[0] == '0') {
  			(yyval.ival) = (int)strtoll ((yyvsp[0].str), NULL, 8);
  		} else {
  			(yyval.ival) = (int)strtoll ((yyvsp[0].str), NULL, 10);
  		}
  	}
  #line 2149 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 44:
  #line 455 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.ival) = (yyvsp[0].ival);
  	}
  #line 2157 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 45:
  #line 460 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[0].ival);
  		(yyval.expression_value).undefined_macro = NULL;
  	}
  #line 2166 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 46:
  #line 464 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = 0;
  		if (parser->is_gles)
  			(yyval.expression_value).undefined_macro = ralloc_strdup (parser, (yyvsp[0].str));
  		else
  			(yyval.expression_value).undefined_macro = NULL;
  	}
  #line 2178 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 47:
  #line 471 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value || (yyvsp[0].expression_value).value;
  
  		/* Short-circuit: Only flag undefined from right side
  		 * if left side evaluates to false.
  		 */
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else if (! (yyvsp[-2].expression_value).value)
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2194 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 48:
  #line 482 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value && (yyvsp[0].expression_value).value;
  
  		/* Short-circuit: Only flag undefined from right-side
  		 * if left side evaluates to true.
  		 */
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else if ((yyvsp[-2].expression_value).value)
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2210 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 49:
  #line 493 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value | (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2222 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 50:
  #line 500 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value ^ (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2234 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 51:
  #line 507 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value & (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2246 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 52:
  #line 514 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value != (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2258 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 53:
  #line 521 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value == (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2270 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 54:
  #line 528 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value >= (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2282 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 55:
  #line 535 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value <= (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2294 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 56:
  #line 542 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value > (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2306 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 57:
  #line 549 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value < (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2318 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 58:
  #line 556 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value >> (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2330 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 59:
  #line 563 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value << (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2342 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 60:
  #line 570 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value - (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2354 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 61:
  #line 577 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value + (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2366 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 62:
  #line 584 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if ((yyvsp[0].expression_value).value == 0) {
  			yyerror (& (yylsp[-2]), parser,
  				 "zero modulus in preprocessor directive");
  		} else {
  			(yyval.expression_value).value = (yyvsp[-2].expression_value).value % (yyvsp[0].expression_value).value;
  		}
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2383 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 63:
  #line 596 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		if ((yyvsp[0].expression_value).value == 0) {
  			yyerror (& (yylsp[-2]), parser,
  				 "division by 0 in preprocessor directive");
  		} else {
  			(yyval.expression_value).value = (yyvsp[-2].expression_value).value / (yyvsp[0].expression_value).value;
  		}
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2400 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 64:
  #line 608 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = (yyvsp[-2].expression_value).value * (yyvsp[0].expression_value).value;
  		if ((yyvsp[-2].expression_value).undefined_macro)
  			(yyval.expression_value).undefined_macro = (yyvsp[-2].expression_value).undefined_macro;
                  else
  			(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2412 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 65:
  #line 615 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = ! (yyvsp[0].expression_value).value;
  		(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2421 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 66:
  #line 619 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = ~ (yyvsp[0].expression_value).value;
  		(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2430 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 67:
  #line 623 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = - (yyvsp[0].expression_value).value;
  		(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2439 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 68:
  #line 627 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value).value = + (yyvsp[0].expression_value).value;
  		(yyval.expression_value).undefined_macro = (yyvsp[0].expression_value).undefined_macro;
  	}
  #line 2448 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 69:
  #line 631 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.expression_value) = (yyvsp[-1].expression_value);
  	}
  #line 2456 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 70:
  #line 637 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.string_list) = _string_list_create (parser);
  		_string_list_append_item ((yyval.string_list), (yyvsp[0].str));
  		ralloc_steal ((yyval.string_list), (yyvsp[0].str));
  	}
  #line 2466 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 71:
  #line 642 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.string_list) = (yyvsp[-2].string_list);	
  		_string_list_append_item ((yyval.string_list), (yyvsp[0].str));
  		ralloc_steal ((yyval.string_list), (yyvsp[0].str));
  	}
  #line 2476 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 72:
  #line 650 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.token_list) = NULL; }
  #line 2482 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 74:
  #line 655 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.token_list) = NULL; }
  #line 2488 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 77:
  #line 661 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		glcpp_error(&(yylsp[0]), parser, "extra tokens at end of directive");
  	}
  #line 2496 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 78:
  #line 667 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		parser->space_tokens = 1;
  		(yyval.token_list) = _token_list_create (parser);
  		_token_list_append ((yyval.token_list), (yyvsp[0].token));
  	}
  #line 2506 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 79:
  #line 672 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token_list) = (yyvsp[-1].token_list);
  		_token_list_append ((yyval.token_list), (yyvsp[0].token));
  	}
  #line 2515 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 80:
  #line 679 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_str (parser, IDENTIFIER, (yyvsp[0].str));
  		(yyval.token)->location = yylloc;
  	}
  #line 2524 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 81:
  #line 683 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_str (parser, INTEGER_STRING, (yyvsp[0].str));
  		(yyval.token)->location = yylloc;
  	}
  #line 2533 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 82:
  #line 687 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_ival (parser, (yyvsp[0].ival), (yyvsp[0].ival));
  		(yyval.token)->location = yylloc;
  	}
  #line 2542 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 83:
  #line 691 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_ival (parser, DEFINED, DEFINED);
  		(yyval.token)->location = yylloc;
  	}
  #line 2551 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 84:
  #line 695 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_str (parser, OTHER, (yyvsp[0].str));
  		(yyval.token)->location = yylloc;
  	}
  #line 2560 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 85:
  #line 699 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      {
  		(yyval.token) = _token_create_ival (parser, SPACE, SPACE);
  		(yyval.token)->location = yylloc;
  	}
  #line 2569 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 86:
  #line 706 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '['; }
  #line 2575 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 87:
  #line 707 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = ']'; }
  #line 2581 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 88:
  #line 708 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '('; }
  #line 2587 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 89:
  #line 709 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = ')'; }
  #line 2593 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 90:
  #line 710 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '{'; }
  #line 2599 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 91:
  #line 711 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '}'; }
  #line 2605 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 92:
  #line 712 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '.'; }
  #line 2611 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 93:
  #line 713 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '&'; }
  #line 2617 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 94:
  #line 714 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '*'; }
  #line 2623 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 95:
  #line 715 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '+'; }
  #line 2629 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 96:
  #line 716 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '-'; }
  #line 2635 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 97:
  #line 717 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '~'; }
  #line 2641 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 98:
  #line 718 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '!'; }
  #line 2647 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 99:
  #line 719 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '/'; }
  #line 2653 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 100:
  #line 720 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '%'; }
  #line 2659 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 101:
  #line 721 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = LEFT_SHIFT; }
  #line 2665 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 102:
  #line 722 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = RIGHT_SHIFT; }
  #line 2671 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 103:
  #line 723 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '<'; }
  #line 2677 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 104:
  #line 724 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '>'; }
  #line 2683 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 105:
  #line 725 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = LESS_OR_EQUAL; }
  #line 2689 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 106:
  #line 726 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = GREATER_OR_EQUAL; }
  #line 2695 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 107:
  #line 727 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = EQUAL; }
  #line 2701 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 108:
  #line 728 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = NOT_EQUAL; }
  #line 2707 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 109:
  #line 729 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '^'; }
  #line 2713 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 110:
  #line 730 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '|'; }
  #line 2719 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 111:
  #line 731 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = AND; }
  #line 2725 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 112:
  #line 732 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = OR; }
  #line 2731 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 113:
  #line 733 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = ';'; }
  #line 2737 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 114:
  #line 734 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = ','; }
  #line 2743 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 115:
  #line 735 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = '='; }
  #line 2749 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 116:
  #line 736 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = PASTE; }
  #line 2755 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 117:
  #line 737 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = PLUS_PLUS; }
  #line 2761 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
    case 118:
  #line 738 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1646  */
      { (yyval.ival) = MINUS_MINUS; }
  #line 2767 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
      break;
  
  
  #line 2771 "src/glsl/glcpp/glcpp-parse.c" /* yacc.c:1646  */
        default: break;
      }
    /* User semantic actions sometimes alter yychar, and that requires
       that yytoken be updated with the new translation.  We take the
       approach of translating immediately before every use of yytoken.
       One alternative is translating here after every semantic action,
       but that translation would be missed if the semantic action invokes
       YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or
       if it invokes YYBACKUP.  In the case of YYABORT or YYACCEPT, an
       incorrect destructor might then be invoked immediately.  In the
       case of YYERROR or YYBACKUP, subsequent parser actions might lead
       to an incorrect destructor call or verbose syntax error message
       before the lookahead is translated.  */
    YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
  
    YYPOPSTACK (yylen);
    yylen = 0;
    YY_STACK_PRINT (yyss, yyssp);
  
    *++yyvsp = yyval;
    *++yylsp = yyloc;
  
    /* 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:
    /* Make sure we have latest lookahead translation.  See comments at
       user semantic actions for why this is necessary.  */
    yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
  
    /* If not already recovering from an error, report this error.  */
    if (!yyerrstatus)
      {
        ++yynerrs;
  #if ! YYERROR_VERBOSE
        yyerror (&yylloc, parser, YY_("syntax error"));
  #else
  # define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \
                                          yyssp, yytoken)
        {
          char const *yymsgp = YY_("syntax error");
          int yysyntax_error_status;
          yysyntax_error_status = YYSYNTAX_ERROR;
          if (yysyntax_error_status == 0)
            yymsgp = yymsg;
          else if (yysyntax_error_status == 1)
            {
              if (yymsg != yymsgbuf)
                YYSTACK_FREE (yymsg);
              yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
              if (!yymsg)
                {
                  yymsg = yymsgbuf;
                  yymsg_alloc = sizeof yymsgbuf;
                  yysyntax_error_status = 2;
                }
              else
                {
                  yysyntax_error_status = YYSYNTAX_ERROR;
                  yymsgp = yymsg;
                }
            }
          yyerror (&yylloc, parser, yymsgp);
          if (yysyntax_error_status == 2)
            goto yyexhaustedlab;
        }
  # undef YYSYNTAX_ERROR
  #endif
      }
  
    yyerror_range[1] = yylloc;
  
    if (yyerrstatus == 3)
      {
        /* If just tried and failed to reuse lookahead token after an
           error, discard it.  */
  
        if (yychar <= YYEOF)
          {
            /* Return failure if at end of input.  */
            if (yychar == YYEOF)
              YYABORT;
          }
        else
          {
            yydestruct ("Error: discarding",
                        yytoken, &yylval, &yylloc, parser);
            yychar = YYEMPTY;
          }
      }
  
    /* Else will try to reuse lookahead token after shifting the error
       token.  */
    goto yyerrlab1;
  
  
  /*---------------------------------------------------.
  | yyerrorlab -- error raised explicitly by YYERROR.  |
  `---------------------------------------------------*/
  yyerrorlab:
  
    /* Pacify compilers like GCC when the user code never invokes
       YYERROR and the label yyerrorlab therefore never appears in user
       code.  */
    if (/*CONSTCOND*/ 0)
       goto yyerrorlab;
  
    yyerror_range[1] = yylsp[1-yylen];
    /* Do not reclaim the symbols of the rule whose action triggered
       this YYERROR.  */
    YYPOPSTACK (yylen);
    yylen = 0;
    YY_STACK_PRINT (yyss, yyssp);
    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 (!yypact_value_is_default (yyn))
          {
            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;
  
        yyerror_range[1] = *yylsp;
        yydestruct ("Error: popping",
                    yystos[yystate], yyvsp, yylsp, parser);
        YYPOPSTACK (1);
        yystate = *yyssp;
        YY_STACK_PRINT (yyss, yyssp);
      }
  
    YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
    *++yyvsp = yylval;
    YY_IGNORE_MAYBE_UNINITIALIZED_END
  
    yyerror_range[2] = yylloc;
    /* Using YYLLOC is tempting, but would change the location of
       the lookahead.  YYLOC is available though.  */
    YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
    *++yylsp = yyloc;
  
    /* Shift the error token.  */
    YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
  
    yystate = yyn;
    goto yynewstate;
  
  
  /*-------------------------------------.
  | yyacceptlab -- YYACCEPT comes here.  |
  `-------------------------------------*/
  yyacceptlab:
    yyresult = 0;
    goto yyreturn;
  
  /*-----------------------------------.
  | yyabortlab -- YYABORT comes here.  |
  `-----------------------------------*/
  yyabortlab:
    yyresult = 1;
    goto yyreturn;
  
  #if !defined yyoverflow || YYERROR_VERBOSE
  /*-------------------------------------------------.
  | yyexhaustedlab -- memory exhaustion comes here.  |
  `-------------------------------------------------*/
  yyexhaustedlab:
    yyerror (&yylloc, parser, YY_("memory exhausted"));
    yyresult = 2;
    /* Fall through.  */
  #endif
  
  yyreturn:
    if (yychar != YYEMPTY)
      {
        /* Make sure we have latest lookahead translation.  See comments at
           user semantic actions for why this is necessary.  */
        yytoken = YYTRANSLATE (yychar);
        yydestruct ("Cleanup: discarding lookahead",
                    yytoken, &yylval, &yylloc, parser);
      }
    /* Do not reclaim the symbols of the rule whose action triggered
       this YYABORT or YYACCEPT.  */
    YYPOPSTACK (yylen);
    YY_STACK_PRINT (yyss, yyssp);
    while (yyssp != yyss)
      {
        yydestruct ("Cleanup: popping",
                    yystos[*yyssp], yyvsp, yylsp, parser);
        YYPOPSTACK (1);
      }
  #ifndef yyoverflow
    if (yyss != yyssa)
      YYSTACK_FREE (yyss);
  #endif
  #if YYERROR_VERBOSE
    if (yymsg != yymsgbuf)
      YYSTACK_FREE (yymsg);
  #endif
    return yyresult;
  }
  #line 741 "src/glsl/glcpp/glcpp-parse.y" /* yacc.c:1906  */
  
  
  string_list_t *
  _string_list_create (void *ctx)
  {
  	string_list_t *list;
  
  	list = ralloc (ctx, string_list_t);
  	list->head = NULL;
  	list->tail = NULL;
  
  	return list;
  }
  
  void
  _string_list_append_item (string_list_t *list, const char *str)
  {
  	string_node_t *node;
  
  	node = ralloc (list, string_node_t);
  	node->str = ralloc_strdup (node, str);
  
  	node->next = NULL;
  
  	if (list->head == NULL) {
  		list->head = node;
  	} else {
  		list->tail->next = node;
  	}
  
  	list->tail = node;
  }
  
  int
  _string_list_contains (string_list_t *list, const char *member, int *index)
  {
  	string_node_t *node;
  	int i;
  
  	if (list == NULL)
  		return 0;
  
  	for (i = 0, node = list->head; node; i++, node = node->next) {
  		if (strcmp (node->str, member) == 0) {
  			if (index)
  				*index = i;
  			return 1;
  		}
  	}
  
  	return 0;
  }
  
  /* Return duplicate string in list (if any), NULL otherwise. */
  const char *
  _string_list_has_duplicate (string_list_t *list)
  {
  	string_node_t *node, *dup;
  
  	if (list == NULL)
  		return NULL;
  
  	for (node = list->head; node; node = node->next) {
  		for (dup = node->next; dup; dup = dup->next) {
  			if (strcmp (node->str, dup->str) == 0)
  				return node->str;
  		}
  	}
  
  	return NULL;
  }
  
  int
  _string_list_length (string_list_t *list)
  {
  	int length = 0;
  	string_node_t *node;
  
  	if (list == NULL)
  		return 0;
  
  	for (node = list->head; node; node = node->next)
  		length++;
  
  	return length;
  }
  
  int
  _string_list_equal (string_list_t *a, string_list_t *b)
  {
  	string_node_t *node_a, *node_b;
  
  	if (a == NULL && b == NULL)
  		return 1;
  
  	if (a == NULL || b == NULL)
  		return 0;
  
  	for (node_a = a->head, node_b = b->head;
  	     node_a && node_b;
  	     node_a = node_a->next, node_b = node_b->next)
  	{
  		if (strcmp (node_a->str, node_b->str))
  			return 0;
  	}
  
  	/* Catch the case of lists being different lengths, (which
  	 * would cause the loop above to terminate after the shorter
  	 * list). */
  	return node_a == node_b;
  }
  
  argument_list_t *
  _argument_list_create (void *ctx)
  {
  	argument_list_t *list;
  
  	list = ralloc (ctx, argument_list_t);
  	list->head = NULL;
  	list->tail = NULL;
  
  	return list;
  }
  
  void
  _argument_list_append (argument_list_t *list, token_list_t *argument)
  {
  	argument_node_t *node;
  
  	node = ralloc (list, argument_node_t);
  	node->argument = argument;
  
  	node->next = NULL;
  
  	if (list->head == NULL) {
  		list->head = node;
  	} else {
  		list->tail->next = node;
  	}
  
  	list->tail = node;
  }
  
  int
  _argument_list_length (argument_list_t *list)
  {
  	int length = 0;
  	argument_node_t *node;
  
  	if (list == NULL)
  		return 0;
  
  	for (node = list->head; node; node = node->next)
  		length++;
  
  	return length;
  }
  
  token_list_t *
  _argument_list_member_at (argument_list_t *list, int index)
  {
  	argument_node_t *node;
  	int i;
  
  	if (list == NULL)
  		return NULL;
  
  	node = list->head;
  	for (i = 0; i < index; i++) {
  		node = node->next;
  		if (node == NULL)
  			break;
  	}
  
  	if (node)
  		return node->argument;
  
  	return NULL;
  }
  
  /* Note: This function ralloc_steal()s the str pointer. */
  token_t *
  _token_create_str (void *ctx, int type, char *str)
  {
  	token_t *token;
  
  	token = ralloc (ctx, token_t);
  	token->type = type;
  	token->value.str = str;
  
  	ralloc_steal (token, str);
  
  	return token;
  }
  
  token_t *
  _token_create_ival (void *ctx, int type, int ival)
  {
  	token_t *token;
  
  	token = ralloc (ctx, token_t);
  	token->type = type;
  	token->value.ival = ival;
  
  	return token;
  }
  
  token_list_t *
  _token_list_create (void *ctx)
  {
  	token_list_t *list;
  
  	list = ralloc (ctx, token_list_t);
  	list->head = NULL;
  	list->tail = NULL;
  	list->non_space_tail = NULL;
  
  	return list;
  }
  
  void
  _token_list_append (token_list_t *list, token_t *token)
  {
  	token_node_t *node;
  
  	node = ralloc (list, token_node_t);
  	node->token = token;
  	node->next = NULL;
  
  	if (list->head == NULL) {
  		list->head = node;
  	} else {
  		list->tail->next = node;
  	}
  
  	list->tail = node;
  	if (token->type != SPACE)
  		list->non_space_tail = node;
  }
  
  void
  _token_list_append_list (token_list_t *list, token_list_t *tail)
  {
  	if (tail == NULL || tail->head == NULL)
  		return;
  
  	if (list->head == NULL) {
  		list->head = tail->head;
  	} else {
  		list->tail->next = tail->head;
  	}
  
  	list->tail = tail->tail;
  	list->non_space_tail = tail->non_space_tail;
  }
  
  static token_list_t *
  _token_list_copy (void *ctx, token_list_t *other)
  {
  	token_list_t *copy;
  	token_node_t *node;
  
  	if (other == NULL)
  		return NULL;
  
  	copy = _token_list_create (ctx);
  	for (node = other->head; node; node = node->next) {
  		token_t *new_token = ralloc (copy, token_t);
  		*new_token = *node->token;
  		_token_list_append (copy, new_token);
  	}
  
  	return copy;
  }
  
  static void
  _token_list_trim_trailing_space (token_list_t *list)
  {
  	token_node_t *tail, *next;
  
  	if (list->non_space_tail) {
  		tail = list->non_space_tail->next;
  		list->non_space_tail->next = NULL;
  		list->tail = list->non_space_tail;
  
  		while (tail) {
  			next = tail->next;
  			ralloc_free (tail);
  			tail = next;
  		}
  	}
  }
  
  static int
  _token_list_is_empty_ignoring_space (token_list_t *l)
  {
  	token_node_t *n;
  
  	if (l == NULL)
  		return 1;
  
  	n = l->head;
  	while (n != NULL && n->token->type == SPACE)
  		n = n->next;
  
  	return n == NULL;
  }
  
  int
  _token_list_equal_ignoring_space (token_list_t *a, token_list_t *b)
  {
  	token_node_t *node_a, *node_b;
  
  	if (a == NULL || b == NULL) {
  		int a_empty = _token_list_is_empty_ignoring_space(a);
  		int b_empty = _token_list_is_empty_ignoring_space(b);
  		return a_empty == b_empty;
  	}
  
  	node_a = a->head;
  	node_b = b->head;
  
  	while (1)
  	{
  		if (node_a == NULL && node_b == NULL)
  			break;
  
  		if (node_a == NULL || node_b == NULL)
  			return 0;
  		/* Make sure whitespace appears in the same places in both.
  		 * It need not be exactly the same amount of whitespace,
  		 * though.
  		 */
  		if (node_a->token->type == SPACE
  		    && node_b->token->type == SPACE) {
  			while (node_a->token->type == SPACE)
  				node_a = node_a->next;
  			while (node_b->token->type == SPACE)
  				node_b = node_b->next;
  			continue;
  		}
  
  		if (node_a->token->type != node_b->token->type)
  			return 0;
  
  		switch (node_a->token->type) {
  		case INTEGER:
  			if (node_a->token->value.ival != 
  			    node_b->token->value.ival)
  			{
  				return 0;
  			}
  			break;
  		case IDENTIFIER:
  		case INTEGER_STRING:
  		case OTHER:
  			if (strcmp (node_a->token->value.str,
  				    node_b->token->value.str))
  			{
  				return 0;
  			}
  			break;
  		}
  
  		node_a = node_a->next;
  		node_b = node_b->next;
  	}
  
  	return 1;
  }
  
  static void
  _token_print (char **out, size_t *len, token_t *token)
  {
  	if (token->type < 256) {
  		ralloc_asprintf_rewrite_tail (out, len, "%c", token->type);
  		return;
  	}
  
  	switch (token->type) {
  	case INTEGER:
  		ralloc_asprintf_rewrite_tail (out, len, "%" PRIiMAX, token->value.ival);
  		break;
  	case IDENTIFIER:
  	case INTEGER_STRING:
  	case OTHER:
  		ralloc_asprintf_rewrite_tail (out, len, "%s", token->value.str);
  		break;
  	case SPACE:
  		ralloc_asprintf_rewrite_tail (out, len, " ");
  		break;
  	case LEFT_SHIFT:
  		ralloc_asprintf_rewrite_tail (out, len, "<<");
  		break;
  	case RIGHT_SHIFT:
  		ralloc_asprintf_rewrite_tail (out, len, ">>");
  		break;
  	case LESS_OR_EQUAL:
  		ralloc_asprintf_rewrite_tail (out, len, "<=");
  		break;
  	case GREATER_OR_EQUAL:
  		ralloc_asprintf_rewrite_tail (out, len, ">=");
  		break;
  	case EQUAL:
  		ralloc_asprintf_rewrite_tail (out, len, "==");
  		break;
  	case NOT_EQUAL:
  		ralloc_asprintf_rewrite_tail (out, len, "!=");
  		break;
  	case AND:
  		ralloc_asprintf_rewrite_tail (out, len, "&&");
  		break;
  	case OR:
  		ralloc_asprintf_rewrite_tail (out, len, "||");
  		break;
  	case PASTE:
  		ralloc_asprintf_rewrite_tail (out, len, "##");
  		break;
          case PLUS_PLUS:
  		ralloc_asprintf_rewrite_tail (out, len, "++");
  		break;
          case MINUS_MINUS:
  		ralloc_asprintf_rewrite_tail (out, len, "--");
  		break;
  	case DEFINED:
  		ralloc_asprintf_rewrite_tail (out, len, "defined");
  		break;
  	case PLACEHOLDER:
  		/* Nothing to print. */
  		break;
  	default:
  		assert(!"Error: Don't know how to print token.");
  
  		break;
  	}
  }
  
  /* Return a new token (ralloc()ed off of 'token') formed by pasting
   * 'token' and 'other'. Note that this function may return 'token' or
   * 'other' directly rather than allocating anything new.
   *
   * Caution: Only very cursory error-checking is performed to see if
   * the final result is a valid single token. */
  static token_t *
  _token_paste (glcpp_parser_t *parser, token_t *token, token_t *other)
  {
  	token_t *combined = NULL;
  
  	/* Pasting a placeholder onto anything makes no change. */
  	if (other->type == PLACEHOLDER)
  		return token;
  
  	/* When 'token' is a placeholder, just return 'other'. */
  	if (token->type == PLACEHOLDER)
  		return other;
  
  	/* A very few single-character punctuators can be combined
  	 * with another to form a multi-character punctuator. */
  	switch (token->type) {
  	case '<':
  		if (other->type == '<')
  			combined = _token_create_ival (token, LEFT_SHIFT, LEFT_SHIFT);
  		else if (other->type == '=')
  			combined = _token_create_ival (token, LESS_OR_EQUAL, LESS_OR_EQUAL);
  		break;
  	case '>':
  		if (other->type == '>')
  			combined = _token_create_ival (token, RIGHT_SHIFT, RIGHT_SHIFT);
  		else if (other->type == '=')
  			combined = _token_create_ival (token, GREATER_OR_EQUAL, GREATER_OR_EQUAL);
  		break;
  	case '=':
  		if (other->type == '=')
  			combined = _token_create_ival (token, EQUAL, EQUAL);
  		break;
  	case '!':
  		if (other->type == '=')
  			combined = _token_create_ival (token, NOT_EQUAL, NOT_EQUAL);
  		break;
  	case '&':
  		if (other->type == '&')
  			combined = _token_create_ival (token, AND, AND);
  		break;
  	case '|':
  		if (other->type == '|')
  			combined = _token_create_ival (token, OR, OR);
  		break;
  	}
  
  	if (combined != NULL) {
  		/* Inherit the location from the first token */
  		combined->location = token->location;
  		return combined;
  	}
  
  	/* Two string-valued (or integer) tokens can usually just be
  	 * mashed together. (We also handle a string followed by an
  	 * integer here as well.)
  	 *
  	 * There are some exceptions here. Notably, if the first token
  	 * is an integer (or a string representing an integer), then
  	 * the second token must also be an integer or must be a
  	 * string representing an integer that begins with a digit.
  	 */
  	if ((token->type == IDENTIFIER || token->type == OTHER || token->type == INTEGER_STRING || token->type == INTEGER) &&
  	    (other->type == IDENTIFIER || other->type == OTHER || other->type == INTEGER_STRING || other->type == INTEGER))
  	{
  		char *str;
  		int combined_type;
  
  		/* Check that pasting onto an integer doesn't create a
  		 * non-integer, (that is, only digits can be
  		 * pasted. */
  		if (token->type == INTEGER_STRING || token->type == INTEGER)
  		{
  			switch (other->type) {
  			case INTEGER_STRING:
  				if (other->value.str[0] < '0' ||
  				    other->value.str[0] > '9')
  					goto FAIL;
  				break;
  			case INTEGER:
  				if (other->value.ival < 0)
  					goto FAIL;
  				break;
  			default:
  				goto FAIL;
  			}
  		}
  
  		if (token->type == INTEGER)
  			str = ralloc_asprintf (token, "%" PRIiMAX,
  					       token->value.ival);
  		else
  			str = ralloc_strdup (token, token->value.str);
  					       
  
  		if (other->type == INTEGER)
  			ralloc_asprintf_append (&str, "%" PRIiMAX,
  						other->value.ival);
  		else
  			ralloc_strcat (&str, other->value.str);
  
  		/* New token is same type as original token, unless we
  		 * started with an integer, in which case we will be
  		 * creating an integer-string. */
  		combined_type = token->type;
  		if (combined_type == INTEGER)
  			combined_type = INTEGER_STRING;
  
  		combined = _token_create_str (token, combined_type, str);
  		combined->location = token->location;
  		return combined;
  	}
  
      FAIL:
  	glcpp_error (&token->location, parser, "");
  	ralloc_asprintf_rewrite_tail (&parser->info_log, &parser->info_log_length, "Pasting \"");
  	_token_print (&parser->info_log, &parser->info_log_length, token);
  	ralloc_asprintf_rewrite_tail (&parser->info_log, &parser->info_log_length, "\" and \"");
  	_token_print (&parser->info_log, &parser->info_log_length, other);
  	ralloc_asprintf_rewrite_tail (&parser->info_log, &parser->info_log_length, "\" does not give a valid preprocessing token.\n");
  
  	return token;
  }
  
  static void
  _token_list_print (glcpp_parser_t *parser, token_list_t *list)
  {
  	token_node_t *node;
  
  	if (list == NULL)
  		return;
  
  	for (node = list->head; node; node = node->next)
  		_token_print (&parser->output, &parser->output_length, node->token);
  }
  
  void
  yyerror (YYLTYPE *locp, glcpp_parser_t *parser, const char *error)
  {
  	glcpp_error(locp, parser, "%s", error);
  }
  
  static void add_builtin_define(glcpp_parser_t *parser,
  			       const char *name, int value)
  {
     token_t *tok;
     token_list_t *list;
  
     tok = _token_create_ival (parser, INTEGER, value);
  
     list = _token_list_create(parser);
     _token_list_append(list, tok);
     _define_object_macro(parser, NULL, name, list);
  }
  
  glcpp_parser_t *
  glcpp_parser_create (const struct gl_extensions *extensions, gl_api api)
  {
  	glcpp_parser_t *parser;
  
  	parser = ralloc (NULL, glcpp_parser_t);
  
  	glcpp_lex_init_extra (parser, &parser->scanner);
  	parser->defines = hash_table_ctor (32, hash_table_string_hash,
  					   hash_table_string_compare);
  	parser->active = NULL;
  	parser->lexing_directive = 0;
  	parser->space_tokens = 1;
  	parser->last_token_was_newline = 0;
  	parser->last_token_was_space = 0;
  	parser->first_non_space_token_this_line = 1;
  	parser->newline_as_space = 0;
  	parser->in_control_line = 0;
  	parser->paren_count = 0;
          parser->commented_newlines = 0;
  
  	parser->skip_stack = NULL;
  	parser->skipping = 0;
  
  	parser->lex_from_list = NULL;
  	parser->lex_from_node = NULL;
  
  	parser->output = ralloc_strdup(parser, "");
  	parser->output_length = 0;
  	parser->info_log = ralloc_strdup(parser, "");
  	parser->info_log_length = 0;
  	parser->error = 0;
  
          parser->extensions = extensions;
          parser->api = api;
          parser->version_resolved = false;
  
  	parser->has_new_line_number = 0;
  	parser->new_line_number = 1;
  	parser->has_new_source_number = 0;
  	parser->new_source_number = 0;
  
  	return parser;
  }
  
  void
  glcpp_parser_destroy (glcpp_parser_t *parser)
  {
  	glcpp_lex_destroy (parser->scanner);
  	hash_table_dtor (parser->defines);
  	ralloc_free (parser);
  }
  
  typedef enum function_status
  {
  	FUNCTION_STATUS_SUCCESS,
  	FUNCTION_NOT_A_FUNCTION,
  	FUNCTION_UNBALANCED_PARENTHESES
  } function_status_t;
  
  /* Find a set of function-like macro arguments by looking for a
   * balanced set of parentheses.
   *
   * When called, 'node' should be the opening-parenthesis token, (or
   * perhaps preceeding SPACE tokens). Upon successful return *last will
   * be the last consumed node, (corresponding to the closing right
   * parenthesis).
   *
   * Return values:
   *
   *   FUNCTION_STATUS_SUCCESS:
   *
   *	Successfully parsed a set of function arguments.	
   *
   *   FUNCTION_NOT_A_FUNCTION:
   *
   *	Macro name not followed by a '('. This is not an error, but
   *	simply that the macro name should be treated as a non-macro.
   *
   *   FUNCTION_UNBALANCED_PARENTHESES
   *
   *	Macro name is not followed by a balanced set of parentheses.
   */
  static function_status_t
  _arguments_parse (argument_list_t *arguments,
  		  token_node_t *node,
  		  token_node_t **last)
  {
  	token_list_t *argument;
  	int paren_count;
  
  	node = node->next;
  
  	/* Ignore whitespace before first parenthesis. */
  	while (node && node->token->type == SPACE)
  		node = node->next;
  
  	if (node == NULL || node->token->type != '(')
  		return FUNCTION_NOT_A_FUNCTION;
  
  	node = node->next;
  
  	argument = _token_list_create (arguments);
  	_argument_list_append (arguments, argument);
  
  	for (paren_count = 1; node; node = node->next) {
  		if (node->token->type == '(')
  		{
  			paren_count++;
  		}
  		else if (node->token->type == ')')
  		{
  			paren_count--;
  			if (paren_count == 0)
  				break;
  		}
  
  		if (node->token->type == ',' &&
  			 paren_count == 1)
  		{
  			_token_list_trim_trailing_space (argument);
  			argument = _token_list_create (arguments);
  			_argument_list_append (arguments, argument);
  		}
  		else {
  			if (argument->head == NULL) {
  				/* Don't treat initial whitespace as
  				 * part of the argument. */
  				if (node->token->type == SPACE)
  					continue;
  			}
  			_token_list_append (argument, node->token);
  		}
  	}
  
  	if (paren_count)
  		return FUNCTION_UNBALANCED_PARENTHESES;
  
  	*last = node;
  
  	return FUNCTION_STATUS_SUCCESS;
  }
  
  static token_list_t *
  _token_list_create_with_one_ival (void *ctx, int type, int ival)
  {
  	token_list_t *list;
  	token_t *node;
  
  	list = _token_list_create (ctx);
  	node = _token_create_ival (list, type, ival);
  	_token_list_append (list, node);
  
  	return list;
  }
  
  static token_list_t *
  _token_list_create_with_one_space (void *ctx)
  {
  	return _token_list_create_with_one_ival (ctx, SPACE, SPACE);
  }
  
  static token_list_t *
  _token_list_create_with_one_integer (void *ctx, int ival)
  {
  	return _token_list_create_with_one_ival (ctx, INTEGER, ival);
  }
  
  /* Evaluate a DEFINED token node (based on subsequent tokens in the list).
   *
   * Note: This function must only be called when "node" is a DEFINED token,
   * (and will abort with an assertion failure otherwise).
   *
   * If "node" is followed, (ignoring any SPACE tokens), by an IDENTIFIER token
   * (optionally preceded and followed by '(' and ')' tokens) then the following
   * occurs:
   *
   *	If the identifier is a defined macro, this function returns 1.
   *
   *	If the identifier is not a defined macro, this function returns 0.
   *
   *	In either case, *last will be updated to the last node in the list
   *	consumed by the evaluation, (either the token of the identifier or the
   *	token of the closing parenthesis).
   *
   * In all other cases, (such as "node is the final node of the list", or
   * "missing closing parenthesis", etc.), this function generates a
   * preprocessor error, returns -1 and *last will not be set.
   */
  static int
  _glcpp_parser_evaluate_defined (glcpp_parser_t *parser,
  				token_node_t *node,
  				token_node_t **last)
  {
  	token_node_t *argument, *defined = node;
  
  	assert (node->token->type == DEFINED);
  
  	node = node->next;
  
  	/* Ignore whitespace after DEFINED token. */
  	while (node && node->token->type == SPACE)
  		node = node->next;
  
  	if (node == NULL)
  		goto FAIL;
  
  	if (node->token->type == IDENTIFIER || node->token->type == OTHER) {
  		argument = node;
  	} else if (node->token->type == '(') {
  		node = node->next;
  
  		/* Ignore whitespace after '(' token. */
  		while (node && node->token->type == SPACE)
  			node = node->next;
  
  		if (node == NULL || (node->token->type != IDENTIFIER &&
  				     node->token->type != OTHER))
  		{
  			goto FAIL;
  		}
  
  		argument = node;
  
  		node = node->next;
  
  		/* Ignore whitespace after identifier, before ')' token. */
  		while (node && node->token->type == SPACE)
  			node = node->next;
  
  		if (node == NULL || node->token->type != ')')
  			goto FAIL;
  	} else {
  		goto FAIL;
  	}
  
  	*last = node;
  
  	return hash_table_find (parser->defines,
  				argument->token->value.str) ? 1 : 0;
  
  FAIL:
  	glcpp_error (&defined->token->location, parser,
  		     "\"defined\" not followed by an identifier");
  	return -1;
  }
  
  /* Evaluate all DEFINED nodes in a given list, modifying the list in place.
   */
  static void
  _glcpp_parser_evaluate_defined_in_list (glcpp_parser_t *parser,
  					token_list_t *list)
  {
  	token_node_t *node, *node_prev, *replacement, *last = NULL;
  	int value;
  
  	if (list == NULL)
  		return;
  
  	node_prev = NULL;
  	node = list->head;
  
  	while (node) {
  
  		if (node->token->type != DEFINED)
  			goto NEXT;
  
  		value = _glcpp_parser_evaluate_defined (parser, node, &last);
  		if (value == -1)
  			goto NEXT;
  
  		replacement = ralloc (list, token_node_t);
  		replacement->token = _token_create_ival (list, INTEGER, value);
  
  		/* Splice replacement node into list, replacing from "node"
  		 * through "last". */
  		if (node_prev)
  			node_prev->next = replacement;
  		else
  			list->head = replacement;
  		replacement->next = last->next;
  		if (last == list->tail)
  			list->tail = replacement;
  
  		node = replacement;
  
  	NEXT:
  		node_prev = node;
  		node = node->next;
  	}
  }
  
  /* Perform macro expansion on 'list', placing the resulting tokens
   * into a new list which is initialized with a first token of type
   * 'head_token_type'. Then begin lexing from the resulting list,
   * (return to the current lexing source when this list is exhausted).
   *
   * See the documentation of _glcpp_parser_expand_token_list for a description
   * of the "mode" parameter.
   */
  static void
  _glcpp_parser_expand_and_lex_from (glcpp_parser_t *parser,
  				   int head_token_type,
  				   token_list_t *list,
  				   expansion_mode_t mode)
  {
  	token_list_t *expanded;
  	token_t *token;
  
  	expanded = _token_list_create (parser);
  	token = _token_create_ival (parser, head_token_type, head_token_type);
  	_token_list_append (expanded, token);
  	_glcpp_parser_expand_token_list (parser, list, mode);
  	_token_list_append_list (expanded, list);
  	glcpp_parser_lex_from (parser, expanded);
  }
  
  static void
  _glcpp_parser_apply_pastes (glcpp_parser_t *parser, token_list_t *list)
  {
  	token_node_t *node;
  
  	node = list->head;
  	while (node)
  	{
  		token_node_t *next_non_space;
  
  		/* Look ahead for a PASTE token, skipping space. */
  		next_non_space = node->next;
  		while (next_non_space && next_non_space->token->type == SPACE)
  			next_non_space = next_non_space->next;
  
  		if (next_non_space == NULL)
  			break;
  
  		if (next_non_space->token->type != PASTE) {
  			node = next_non_space;
  			continue;
  		}
  
  		/* Now find the next non-space token after the PASTE. */
  		next_non_space = next_non_space->next;
  		while (next_non_space && next_non_space->token->type == SPACE)
  			next_non_space = next_non_space->next;
  
  		if (next_non_space == NULL) {
  			yyerror (&node->token->location, parser, "'##' cannot appear at either end of a macro expansion\n");
  			return;
  		}
  
  		node->token = _token_paste (parser, node->token, next_non_space->token);
  		node->next = next_non_space->next;
  		if (next_non_space == list->tail)
  			list->tail = node;
  	}
  
  	list->non_space_tail = list->tail;
  }
  
  /* This is a helper function that's essentially part of the
   * implementation of _glcpp_parser_expand_node. It shouldn't be called
   * except for by that function.
   *
   * Returns NULL if node is a simple token with no expansion, (that is,
   * although 'node' corresponds to an identifier defined as a
   * function-like macro, it is not followed with a parenthesized
   * argument list).
   *
   * Compute the complete expansion of node (which is a function-like
   * macro) and subsequent nodes which are arguments.
   *
   * Returns the token list that results from the expansion and sets
   * *last to the last node in the list that was consumed by the
   * expansion. Specifically, *last will be set as follows: as the
   * token of the closing right parenthesis.
   *
   * See the documentation of _glcpp_parser_expand_token_list for a description
   * of the "mode" parameter.
   */
  static token_list_t *
  _glcpp_parser_expand_function (glcpp_parser_t *parser,
  			       token_node_t *node,
  			       token_node_t **last,
  			       expansion_mode_t mode)
  {
  	macro_t *macro;
  	const char *identifier;
  	argument_list_t *arguments;
  	function_status_t status;
  	token_list_t *substituted;
  	int parameter_index;
  
  	identifier = node->token->value.str;
  
  	macro = hash_table_find (parser->defines, identifier);
  
  	assert (macro->is_function);
  
  	arguments = _argument_list_create (parser);
  	status = _arguments_parse (arguments, node, last);
  
  	switch (status) {
  	case FUNCTION_STATUS_SUCCESS:
  		break;
  	case FUNCTION_NOT_A_FUNCTION:
  		return NULL;
  	case FUNCTION_UNBALANCED_PARENTHESES:
  		glcpp_error (&node->token->location, parser, "Macro %s call has unbalanced parentheses\n", identifier);
  		return NULL;
  	}
  
  	/* Replace a macro defined as empty with a SPACE token. */
  	if (macro->replacements == NULL) {
  		ralloc_free (arguments);
  		return _token_list_create_with_one_space (parser);
  	}
  
  	if (! ((_argument_list_length (arguments) == 
  		_string_list_length (macro->parameters)) ||
  	       (_string_list_length (macro->parameters) == 0 &&
  		_argument_list_length (arguments) == 1 &&
  		arguments->head->argument->head == NULL)))
  	{
  		glcpp_error (&node->token->location, parser,
  			      "Error: macro %s invoked with %d arguments (expected %d)\n",
  			      identifier,
  			      _argument_list_length (arguments),
  			      _string_list_length (macro->parameters));
  		return NULL;
  	}
  
  	/* Perform argument substitution on the replacement list. */
  	substituted = _token_list_create (arguments);
  
  	for (node = macro->replacements->head; node; node = node->next)
  	{
  		if (node->token->type == IDENTIFIER &&
  		    _string_list_contains (macro->parameters,
  					   node->token->value.str,
  					   &parameter_index))
  		{
  			token_list_t *argument;
  			argument = _argument_list_member_at (arguments,
  							     parameter_index);
  			/* Before substituting, we expand the argument
  			 * tokens, or append a placeholder token for
  			 * an empty argument. */
  			if (argument->head) {
  				token_list_t *expanded_argument;
  				expanded_argument = _token_list_copy (parser,
  								      argument);
  				_glcpp_parser_expand_token_list (parser,
  								 expanded_argument,
  								 mode);
  				_token_list_append_list (substituted,
  							 expanded_argument);
  			} else {
  				token_t *new_token;
  
  				new_token = _token_create_ival (substituted,
  								PLACEHOLDER,
  								PLACEHOLDER);
  				_token_list_append (substituted, new_token);
  			}
  		} else {
  			_token_list_append (substituted, node->token);
  		}
  	}
  
  	/* After argument substitution, and before further expansion
  	 * below, implement token pasting. */
  
  	_token_list_trim_trailing_space (substituted);
  
  	_glcpp_parser_apply_pastes (parser, substituted);
  
  	return substituted;
  }
  
  /* Compute the complete expansion of node, (and subsequent nodes after
   * 'node' in the case that 'node' is a function-like macro and
   * subsequent nodes are arguments).
   *
   * Returns NULL if node is a simple token with no expansion.
   *
   * Otherwise, returns the token list that results from the expansion
   * and sets *last to the last node in the list that was consumed by
   * the expansion. Specifically, *last will be set as follows:
   *
   *	As 'node' in the case of object-like macro expansion.
   *
   *	As the token of the closing right parenthesis in the case of
   *	function-like macro expansion.
   *
   * See the documentation of _glcpp_parser_expand_token_list for a description
   * of the "mode" parameter.
   */
  static token_list_t *
  _glcpp_parser_expand_node (glcpp_parser_t *parser,
  			   token_node_t *node,
  			   token_node_t **last,
  			   expansion_mode_t mode)
  {
  	token_t *token = node->token;
  	const char *identifier;
  	macro_t *macro;
  
  	/* We only expand identifiers */
  	if (token->type != IDENTIFIER) {
  		return NULL;
  	}
  
  	*last = node;
  	identifier = token->value.str;
  
  	/* Special handling for __LINE__ and __FILE__, (not through
  	 * the hash table). */
  	if (strcmp(identifier, "__LINE__") == 0)
  		return _token_list_create_with_one_integer (parser, node->token->location.first_line);
  
  	if (strcmp(identifier, "__FILE__") == 0)
  		return _token_list_create_with_one_integer (parser, node->token->location.source);
  
  	/* Look up this identifier in the hash table. */
  	macro = hash_table_find (parser->defines, identifier);
  
  	/* Not a macro, so no expansion needed. */
  	if (macro == NULL)
  		return NULL;
  
  	/* Finally, don't expand this macro if we're already actively
  	 * expanding it, (to avoid infinite recursion). */
  	if (_parser_active_list_contains (parser, identifier)) {
  		/* We change the token type here from IDENTIFIER to
  		 * OTHER to prevent any future expansion of this
  		 * unexpanded token. */
  		char *str;
  		token_list_t *expansion;
  		token_t *final;
  
  		str = ralloc_strdup (parser, token->value.str);
  		final = _token_create_str (parser, OTHER, str);
  		expansion = _token_list_create (parser);
  		_token_list_append (expansion, final);
  		return expansion;
  	}
  
  	if (! macro->is_function)
  	{
  		token_list_t *replacement;
  
  		/* Replace a macro defined as empty with a SPACE token. */
  		if (macro->replacements == NULL)
  			return _token_list_create_with_one_space (parser);
  
  		replacement = _token_list_copy (parser, macro->replacements);
  		_glcpp_parser_apply_pastes (parser, replacement);
  		return replacement;
  	}
  
  	return _glcpp_parser_expand_function (parser, node, last, mode);
  }
  
  /* Push a new identifier onto the parser's active list.
   *
   * Here, 'marker' is the token node that appears in the list after the
   * expansion of 'identifier'. That is, when the list iterator begins
   * examining 'marker', then it is time to pop this node from the
   * active stack.
   */
  static void
  _parser_active_list_push (glcpp_parser_t *parser,
  			  const char *identifier,
  			  token_node_t *marker)
  {
  	active_list_t *node;
  
  	node = ralloc (parser->active, active_list_t);
  	node->identifier = ralloc_strdup (node, identifier);
  	node->marker = marker;
  	node->next = parser->active;
  
  	parser->active = node;
  }
  
  static void
  _parser_active_list_pop (glcpp_parser_t *parser)
  {
  	active_list_t *node = parser->active;
  
  	if (node == NULL) {
  		parser->active = NULL;
  		return;
  	}
  
  	node = parser->active->next;
  	ralloc_free (parser->active);
  
  	parser->active = node;
  }
  
  static int
  _parser_active_list_contains (glcpp_parser_t *parser, const char *identifier)
  {
  	active_list_t *node;
  
  	if (parser->active == NULL)
  		return 0;
  
  	for (node = parser->active; node; node = node->next)
  		if (strcmp (node->identifier, identifier) == 0)
  			return 1;
  
  	return 0;
  }
  
  /* Walk over the token list replacing nodes with their expansion.
   * Whenever nodes are expanded the walking will walk over the new
   * nodes, continuing to expand as necessary. The results are placed in
   * 'list' itself.
   *
   * The "mode" argument controls the handling of any DEFINED tokens that
   * result from expansion as follows:
   *
   *	EXPANSION_MODE_IGNORE_DEFINED: Any resulting DEFINED tokens will be
   *		left in the final list, unevaluated. This is the correct mode
   *		for expanding any list in any context other than a
   *		preprocessor conditional, (#if or #elif).
   *
   *	EXPANSION_MODE_EVALUATE_DEFINED: Any resulting DEFINED tokens will be
   *		evaluated to 0 or 1 tokens depending on whether the following
   *		token is the name of a defined macro. If the DEFINED token is
   *		not followed by an (optionally parenthesized) identifier, then
   *		an error will be generated. This the correct mode for
   *		expanding any list in the context of a preprocessor
   *		conditional, (#if or #elif).
   */
  static void
  _glcpp_parser_expand_token_list (glcpp_parser_t *parser,
  				 token_list_t *list,
  				 expansion_mode_t mode)
  {
  	token_node_t *node_prev;
  	token_node_t *node, *last = NULL;
  	token_list_t *expansion;
  	active_list_t *active_initial = parser->active;
  
  	if (list == NULL)
  		return;
  
  	_token_list_trim_trailing_space (list);
  
  	node_prev = NULL;
  	node = list->head;
  
  	if (mode == EXPANSION_MODE_EVALUATE_DEFINED)
  		_glcpp_parser_evaluate_defined_in_list (parser, list);
  
  	while (node) {
  
  		while (parser->active && parser->active->marker == node)
  			_parser_active_list_pop (parser);
  
  		expansion = _glcpp_parser_expand_node (parser, node, &last, mode);
  		if (expansion) {
  			token_node_t *n;
  
  			if (mode == EXPANSION_MODE_EVALUATE_DEFINED) {
  				_glcpp_parser_evaluate_defined_in_list (parser,
  									expansion);
  			}
  
  			for (n = node; n != last->next; n = n->next)
  				while (parser->active &&
  				       parser->active->marker == n)
  				{
  					_parser_active_list_pop (parser);
  				}
  
  			_parser_active_list_push (parser,
  						  node->token->value.str,
  						  last->next);
  			
  			/* Splice expansion into list, supporting a
  			 * simple deletion if the expansion is
  			 * empty. */
  			if (expansion->head) {
  				if (node_prev)
  					node_prev->next = expansion->head;
  				else
  					list->head = expansion->head;
  				expansion->tail->next = last->next;
  				if (last == list->tail)
  					list->tail = expansion->tail;
  			} else {
  				if (node_prev)
  					node_prev->next = last->next;
  				else
  					list->head = last->next;
  				if (last == list->tail)
  					list->tail = NULL;
  			}
  		} else {
  			node_prev = node;
  		}
  		node = node_prev ? node_prev->next : list->head;
  	}
  
  	/* Remove any lingering effects of this invocation on the
  	 * active list. That is, pop until the list looks like it did
  	 * at the beginning of this function. */
  	while (parser->active && parser->active != active_initial)
  		_parser_active_list_pop (parser);
  
  	list->non_space_tail = list->tail;
  }
  
  void
  _glcpp_parser_print_expanded_token_list (glcpp_parser_t *parser,
  					 token_list_t *list)
  {
  	if (list == NULL)
  		return;
  
  	_glcpp_parser_expand_token_list (parser, list, EXPANSION_MODE_IGNORE_DEFINED);
  
  	_token_list_trim_trailing_space (list);
  
  	_token_list_print (parser, list);
  }
  
  static void
  _check_for_reserved_macro_name (glcpp_parser_t *parser, YYLTYPE *loc,
  				const char *identifier)
  {
  	/* Section 3.3 (Preprocessor) of the GLSL 1.30 spec (and later) and
  	 * the GLSL ES spec (all versions) say:
  	 *
  	 *     "All macro names containing two consecutive underscores ( __ )
  	 *     are reserved for future use as predefined macro names. All
  	 *     macro names prefixed with "GL_" ("GL" followed by a single
  	 *     underscore) are also reserved."
  	 *
  	 * The intention is that names containing __ are reserved for internal
  	 * use by the implementation, and names prefixed with GL_ are reserved
  	 * for use by Khronos.  Since every extension adds a name prefixed
  	 * with GL_ (i.e., the name of the extension), that should be an
  	 * error.  Names simply containing __ are dangerous to use, but should
  	 * be allowed.
  	 *
  	 * A future version of the GLSL specification will clarify this.
  	 */
  	if (strstr(identifier, "__")) {
  		glcpp_warning(loc, parser,
  			      "Macro names containing \"__\" are reserved "
  			      "for use by the implementation.\n");
  	}
  	if (strncmp(identifier, "GL_", 3) == 0) {
  		glcpp_error (loc, parser, "Macro names starting with \"GL_\" are reserved.\n");
  	}
  }
  
  static int
  _macro_equal (macro_t *a, macro_t *b)
  {
  	if (a->is_function != b->is_function)
  		return 0;
  
  	if (a->is_function) {
  		if (! _string_list_equal (a->parameters, b->parameters))
  			return 0;
  	}
  
  	return _token_list_equal_ignoring_space (a->replacements,
  						 b->replacements);
  }
  
  void
  _define_object_macro (glcpp_parser_t *parser,
  		      YYLTYPE *loc,
  		      const char *identifier,
  		      token_list_t *replacements)
  {
  	macro_t *macro, *previous;
  
  	/* We define pre-defined macros before we've started parsing the
           * actual file. So if there's no location defined yet, that's what
           * were doing and we don't want to generate an error for using the
           * reserved names. */
  	if (loc != NULL)
  		_check_for_reserved_macro_name(parser, loc, identifier);
  
  	macro = ralloc (parser, macro_t);
  
  	macro->is_function = 0;
  	macro->parameters = NULL;
  	macro->identifier = ralloc_strdup (macro, identifier);
  	macro->replacements = replacements;
  	ralloc_steal (macro, replacements);
  
  	previous = hash_table_find (parser->defines, identifier);
  	if (previous) {
  		if (_macro_equal (macro, previous)) {
  			ralloc_free (macro);
  			return;
  		}
  		glcpp_error (loc, parser, "Redefinition of macro %s\n",
  			     identifier);
  	}
  
  	hash_table_insert (parser->defines, macro, identifier);
  }
  
  void
  _define_function_macro (glcpp_parser_t *parser,
  			YYLTYPE *loc,
  			const char *identifier,
  			string_list_t *parameters,
  			token_list_t *replacements)
  {
  	macro_t *macro, *previous;
  	const char *dup;
  
  	_check_for_reserved_macro_name(parser, loc, identifier);
  
          /* Check for any duplicate parameter names. */
  	if ((dup = _string_list_has_duplicate (parameters)) != NULL) {
  		glcpp_error (loc, parser, "Duplicate macro parameter \"%s\"",
  			     dup);
  	}
  
  	macro = ralloc (parser, macro_t);
  	ralloc_steal (macro, parameters);
  	ralloc_steal (macro, replacements);
  
  	macro->is_function = 1;
  	macro->parameters = parameters;
  	macro->identifier = ralloc_strdup (macro, identifier);
  	macro->replacements = replacements;
  	previous = hash_table_find (parser->defines, identifier);
  	if (previous) {
  		if (_macro_equal (macro, previous)) {
  			ralloc_free (macro);
  			return;
  		}
  		glcpp_error (loc, parser, "Redefinition of macro %s\n",
  			     identifier);
  	}
  
  	hash_table_insert (parser->defines, macro, identifier);
  }
  
  static int
  glcpp_parser_lex (YYSTYPE *yylval, YYLTYPE *yylloc, glcpp_parser_t *parser)
  {
  	token_node_t *node;
  	int ret;
  
  	if (parser->lex_from_list == NULL) {
  		ret = glcpp_lex (yylval, yylloc, parser->scanner);
  
  		/* XXX: This ugly block of code exists for the sole
  		 * purpose of converting a NEWLINE token into a SPACE
  		 * token, but only in the case where we have seen a
  		 * function-like macro name, but have not yet seen its
  		 * closing parenthesis.
  		 *
  		 * There's perhaps a more compact way to do this with
  		 * mid-rule actions in the grammar.
  		 *
  		 * I'm definitely not pleased with the complexity of
  		 * this code here.
  		 */
  		if (parser->newline_as_space)
  		{
  			if (ret == '(') {
  				parser->paren_count++;
  			} else if (ret == ')') {
  				parser->paren_count--;
  				if (parser->paren_count == 0)
  					parser->newline_as_space = 0;
  			} else if (ret == NEWLINE) {
  				ret = SPACE;
  			} else if (ret != SPACE) {
  				if (parser->paren_count == 0)
  					parser->newline_as_space = 0;
  			}
  		}
  		else if (parser->in_control_line)
  		{
  			if (ret == NEWLINE)
  				parser->in_control_line = 0;
  		}
  		else if (ret == DEFINE_TOKEN ||
  			 ret == UNDEF || ret == IF ||
  			 ret == IFDEF || ret == IFNDEF ||
  			 ret == ELIF || ret == ELSE ||
  			 ret == ENDIF || ret == HASH_TOKEN)
  		{
  			parser->in_control_line = 1;
  		}
  		else if (ret == IDENTIFIER)
  		{
  			macro_t *macro;
  			macro = hash_table_find (parser->defines,
  						 yylval->str);
  			if (macro && macro->is_function) {
  				parser->newline_as_space = 1;
  				parser->paren_count = 0;
  			}
  		}
  
  		return ret;
  	}
  
  	node = parser->lex_from_node;
  
  	if (node == NULL) {
  		ralloc_free (parser->lex_from_list);
  		parser->lex_from_list = NULL;
  		return NEWLINE;
  	}
  
  	*yylval = node->token->value;
  	ret = node->token->type;
  
  	parser->lex_from_node = node->next;
  
  	return ret;
  }
  
  static void
  glcpp_parser_lex_from (glcpp_parser_t *parser, token_list_t *list)
  {
  	token_node_t *node;
  
  	assert (parser->lex_from_list == NULL);
  
  	/* Copy list, eliminating any space tokens. */
  	parser->lex_from_list = _token_list_create (parser);
  
  	for (node = list->head; node; node = node->next) {
  		if (node->token->type == SPACE)
  			continue;
  		_token_list_append (parser->lex_from_list, node->token);
  	}
  
  	ralloc_free (list);
  
  	parser->lex_from_node = parser->lex_from_list->head;
  
  	/* It's possible the list consisted of nothing but whitespace. */
  	if (parser->lex_from_node == NULL) {
  		ralloc_free (parser->lex_from_list);
  		parser->lex_from_list = NULL;
  	}
  }
  
  static void
  _glcpp_parser_skip_stack_push_if (glcpp_parser_t *parser, YYLTYPE *loc,
  				  int condition)
  {
  	skip_type_t current = SKIP_NO_SKIP;
  	skip_node_t *node;
  
  	if (parser->skip_stack)
  		current = parser->skip_stack->type;
  
  	node = ralloc (parser, skip_node_t);
  	node->loc = *loc;
  
  	if (current == SKIP_NO_SKIP) {
  		if (condition)
  			node->type = SKIP_NO_SKIP;
  		else
  			node->type = SKIP_TO_ELSE;
  	} else {
  		node->type = SKIP_TO_ENDIF;
  	}
  
  	node->has_else = false;
  	node->next = parser->skip_stack;
  	parser->skip_stack = node;
  }
  
  static void
  _glcpp_parser_skip_stack_change_if (glcpp_parser_t *parser, YYLTYPE *loc,
  				    const char *type, int condition)
  {
  	if (parser->skip_stack == NULL) {
  		glcpp_error (loc, parser, "#%s without #if\n", type);
  		return;
  	}
  
  	if (parser->skip_stack->type == SKIP_TO_ELSE) {
  		if (condition)
  			parser->skip_stack->type = SKIP_NO_SKIP;
  	} else {
  		parser->skip_stack->type = SKIP_TO_ENDIF;
  	}
  }
  
  static void
  _glcpp_parser_skip_stack_pop (glcpp_parser_t *parser, YYLTYPE *loc)
  {
  	skip_node_t *node;
  
  	if (parser->skip_stack == NULL) {
  		glcpp_error (loc, parser, "#endif without #if\n");
  		return;
  	}
  
  	node = parser->skip_stack;
  	parser->skip_stack = node->next;
  	ralloc_free (node);
  }
  
  static void
  _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t version,
                                           const char *es_identifier,
                                           bool explicitly_set)
  {
  	const struct gl_extensions *extensions = parser->extensions;
  
  	if (parser->version_resolved)
  		return;
  
  	parser->version_resolved = true;
  
  	add_builtin_define (parser, "__VERSION__", version);
  
  	parser->is_gles = (version == 100) ||
  			   (es_identifier &&
  			    (strcmp(es_identifier, "es") == 0));
  
  	/* Add pre-defined macros. */
  	if (parser->is_gles) {
  	   add_builtin_define(parser, "GL_ES", 1);
             add_builtin_define(parser, "GL_EXT_separate_shader_objects", 1);
  
  	   if (extensions != NULL) {
  	      if (extensions->OES_EGL_image_external)
  	         add_builtin_define(parser, "GL_OES_EGL_image_external", 1);
                if (extensions->OES_standard_derivatives)
                   add_builtin_define(parser, "GL_OES_standard_derivatives", 1);
  	   }
  	} else {
  	   add_builtin_define(parser, "GL_ARB_draw_buffers", 1);
             add_builtin_define(parser, "GL_ARB_separate_shader_objects", 1);
  	   add_builtin_define(parser, "GL_ARB_texture_rectangle", 1);
             add_builtin_define(parser, "GL_AMD_shader_trinary_minmax", 1);
  
  
  	   if (extensions != NULL) {
  	      if (extensions->EXT_texture_array)
  	         add_builtin_define(parser, "GL_EXT_texture_array", 1);
  
  	      if (extensions->ARB_arrays_of_arrays)
  	          add_builtin_define(parser, "GL_ARB_arrays_of_arrays", 1);
  
  	      if (extensions->ARB_fragment_coord_conventions)
  	         add_builtin_define(parser, "GL_ARB_fragment_coord_conventions",
  				    1);
  
                if (extensions->ARB_fragment_layer_viewport)
                   add_builtin_define(parser, "GL_ARB_fragment_layer_viewport", 1);
  
  	      if (extensions->ARB_explicit_attrib_location)
  	         add_builtin_define(parser, "GL_ARB_explicit_attrib_location", 1);
  
  	      if (extensions->ARB_explicit_uniform_location)
  	         add_builtin_define(parser, "GL_ARB_explicit_uniform_location", 1);
  
  	      if (extensions->ARB_shader_texture_lod)
  	         add_builtin_define(parser, "GL_ARB_shader_texture_lod", 1);
  
  	      if (extensions->ARB_draw_instanced)
  	         add_builtin_define(parser, "GL_ARB_draw_instanced", 1);
  
  	      if (extensions->EXT_draw_instanced)
  	         add_builtin_define(parser, "GL_EXT_draw_instanced", 1);
  
  	      if (extensions->ARB_conservative_depth) {
  	         add_builtin_define(parser, "GL_AMD_conservative_depth", 1);
  	         add_builtin_define(parser, "GL_ARB_conservative_depth", 1);
  	      }
  
  	      if (extensions->ARB_shader_bit_encoding)
  	         add_builtin_define(parser, "GL_ARB_shader_bit_encoding", 1);
  
  	      if (extensions->ARB_uniform_buffer_object)
  	         add_builtin_define(parser, "GL_ARB_uniform_buffer_object", 1);
  
  	      if (extensions->ARB_texture_cube_map_array)
  	         add_builtin_define(parser, "GL_ARB_texture_cube_map_array", 1);
  
  	      if (extensions->ARB_shading_language_packing)
  	         add_builtin_define(parser, "GL_ARB_shading_language_packing", 1);
  
  	      if (extensions->ARB_texture_multisample)
  	         add_builtin_define(parser, "GL_ARB_texture_multisample", 1);
  
  	      if (extensions->ARB_texture_query_levels)
  	         add_builtin_define(parser, "GL_ARB_texture_query_levels", 1);
  
  	      if (extensions->ARB_texture_query_lod)
  	         add_builtin_define(parser, "GL_ARB_texture_query_lod", 1);
  
  	      if (extensions->ARB_gpu_shader5)
  	         add_builtin_define(parser, "GL_ARB_gpu_shader5", 1);
  
  	      if (extensions->AMD_vertex_shader_layer)
  	         add_builtin_define(parser, "GL_AMD_vertex_shader_layer", 1);
  
  	      if (extensions->AMD_vertex_shader_viewport_index)
  	         add_builtin_define(parser, "GL_AMD_vertex_shader_viewport_index", 1);
  
  	      if (extensions->ARB_shading_language_420pack)
  	         add_builtin_define(parser, "GL_ARB_shading_language_420pack", 1);
  
  	      if (extensions->ARB_sample_shading)
  	         add_builtin_define(parser, "GL_ARB_sample_shading", 1);
  
  	      if (extensions->ARB_texture_gather)
  	         add_builtin_define(parser, "GL_ARB_texture_gather", 1);
  
  	      if (extensions->ARB_shader_atomic_counters)
  	         add_builtin_define(parser, "GL_ARB_shader_atomic_counters", 1);
  
  	      if (extensions->ARB_viewport_array)
  	         add_builtin_define(parser, "GL_ARB_viewport_array", 1);
  
                if (extensions->ARB_compute_shader)
                   add_builtin_define(parser, "GL_ARB_compute_shader", 1);
  
  	      if (extensions->ARB_shader_image_load_store)
  	         add_builtin_define(parser, "GL_ARB_shader_image_load_store", 1);
  
                if (extensions->ARB_derivative_control)
                   add_builtin_define(parser, "GL_ARB_derivative_control", 1);
  	   }
  	}
  
  	if (extensions != NULL) {
  	   if (extensions->EXT_shader_integer_mix)
  	      add_builtin_define(parser, "GL_EXT_shader_integer_mix", 1);
  	}
  
  	if (version >= 150)
  		add_builtin_define(parser, "GL_core_profile", 1);
  
  	/* Currently, all ES2/ES3 implementations support highp in the
  	 * fragment shader, so we always define this macro in ES2/ES3.
  	 * If we ever get a driver that doesn't support highp, we'll
  	 * need to add a flag to the gl_context and check that here.
  	 */
  	if (version >= 130 || parser->is_gles)
  		add_builtin_define (parser, "GL_FRAGMENT_PRECISION_HIGH", 1);
  
  	if (explicitly_set) {
  	   ralloc_asprintf_rewrite_tail (&parser->output, &parser->output_length,
  					 "#version %" PRIiMAX "%s%s", version,
  					 es_identifier ? " " : "",
  					 es_identifier ? es_identifier : "");
  	}
  }
  
  /* GLSL version if no version is explicitly specified. */
  #define IMPLICIT_GLSL_VERSION 110
  #define IMPLICIT_GLSL_ES_VERSION 100
  
  /* GLSL ES version if no version is explicitly specified. */
  #define IMPLICIT_GLSL_ES_VERSION 100
  
  void
  glcpp_parser_resolve_implicit_version(glcpp_parser_t *parser)
  {
  	int language_version = parser->api == API_OPENGLES2 ?
  			       IMPLICIT_GLSL_ES_VERSION :
  			       IMPLICIT_GLSL_VERSION;
  
  	_glcpp_parser_handle_version_declaration(parser, language_version,
  						 NULL, false);
  }
  