/* A Bison parser, made by GNU Bison 3.8.1.  */

/* Bison implementation for Yacc-like parsers in C

   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2021 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 <https://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.  */

/* DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
   especially those whose name start with YY_ or yy_.  They are
   private implementation details that can be changed or removed.  */

/* 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, and Bison version.  */
#define YYBISON 30801

/* Bison version string.  */
#define YYBISON_VERSION "3.8.1"

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

/* Pure parsers.  */
#define YYPURE 2

/* Push parsers.  */
#define YYPUSH 0

/* Pull parsers.  */
#define YYPULL 1

/* "%code top" blocks.  */
#line 35 "src/parse-gram.y"

  /* On column 0 to please syntax-check.  */
#include <config.h>

#line 73 "src/parse-gram.c"
/* Substitute the type names.  */
#define YYSTYPE         GRAM_STYPE
#define YYLTYPE         GRAM_LTYPE
/* Substitute the variable and function names.  */
#define yyparse         gram_parse
#define yylex           gram_lex
#define yyerror         gram_error
#define yydebug         gram_debug
#define yynerrs         gram_nerrs


# ifndef YY_CAST
#  ifdef __cplusplus
#   define YY_CAST(Type, Val) static_cast<Type> (Val)
#   define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type> (Val)
#  else
#   define YY_CAST(Type, Val) ((Type) (Val))
#   define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val))
#  endif
# endif
# ifndef YY_NULLPTR
#  if defined __cplusplus
#   if 201103L <= __cplusplus
#    define YY_NULLPTR nullptr
#   else
#    define YY_NULLPTR 0
#   endif
#  else
#   define YY_NULLPTR ((void*)0)
#  endif
# endif

#include "parse-gram.h"
/* Symbol kind.  */
enum yysymbol_kind_t
{
  YYSYMBOL_YYEMPTY = -2,
  YYSYMBOL_YYEOF = 0,                      /* "end of file"  */
  YYSYMBOL_YYerror = 1,                    /* error  */
  YYSYMBOL_YYUNDEF = 2,                    /* "invalid token"  */
  YYSYMBOL_STRING = 3,                     /* "string"  */
  YYSYMBOL_TSTRING = 4,                    /* "translatable string"  */
  YYSYMBOL_PERCENT_TOKEN = 5,              /* "%token"  */
  YYSYMBOL_PERCENT_NTERM = 6,              /* "%nterm"  */
  YYSYMBOL_PERCENT_TYPE = 7,               /* "%type"  */
  YYSYMBOL_PERCENT_DESTRUCTOR = 8,         /* "%destructor"  */
  YYSYMBOL_PERCENT_PRINTER = 9,            /* "%printer"  */
  YYSYMBOL_PERCENT_LEFT = 10,              /* "%left"  */
  YYSYMBOL_PERCENT_RIGHT = 11,             /* "%right"  */
  YYSYMBOL_PERCENT_NONASSOC = 12,          /* "%nonassoc"  */
  YYSYMBOL_PERCENT_PRECEDENCE = 13,        /* "%precedence"  */
  YYSYMBOL_PERCENT_PREC = 14,              /* "%prec"  */
  YYSYMBOL_PERCENT_DPREC = 15,             /* "%dprec"  */
  YYSYMBOL_PERCENT_MERGE = 16,             /* "%merge"  */
  YYSYMBOL_PERCENT_CODE = 17,              /* "%code"  */
  YYSYMBOL_PERCENT_DEFAULT_PREC = 18,      /* "%default-prec"  */
  YYSYMBOL_PERCENT_DEFINE = 19,            /* "%define"  */
  YYSYMBOL_PERCENT_ERROR_VERBOSE = 20,     /* "%error-verbose"  */
  YYSYMBOL_PERCENT_EXPECT = 21,            /* "%expect"  */
  YYSYMBOL_PERCENT_EXPECT_RR = 22,         /* "%expect-rr"  */
  YYSYMBOL_PERCENT_FILE_PREFIX = 23,       /* "%file-prefix"  */
  YYSYMBOL_PERCENT_FLAG = 24,              /* "%<flag>"  */
  YYSYMBOL_PERCENT_GLR_PARSER = 25,        /* "%glr-parser"  */
  YYSYMBOL_PERCENT_HEADER = 26,            /* "%header"  */
  YYSYMBOL_PERCENT_INITIAL_ACTION = 27,    /* "%initial-action"  */
  YYSYMBOL_PERCENT_LANGUAGE = 28,          /* "%language"  */
  YYSYMBOL_PERCENT_NAME_PREFIX = 29,       /* "%name-prefix"  */
  YYSYMBOL_PERCENT_NO_DEFAULT_PREC = 30,   /* "%no-default-prec"  */
  YYSYMBOL_PERCENT_NO_LINES = 31,          /* "%no-lines"  */
  YYSYMBOL_PERCENT_NONDETERMINISTIC_PARSER = 32, /* "%nondeterministic-parser"  */
  YYSYMBOL_PERCENT_OUTPUT = 33,            /* "%output"  */
  YYSYMBOL_PERCENT_PURE_PARSER = 34,       /* "%pure-parser"  */
  YYSYMBOL_PERCENT_REQUIRE = 35,           /* "%require"  */
  YYSYMBOL_PERCENT_SKELETON = 36,          /* "%skeleton"  */
  YYSYMBOL_PERCENT_START = 37,             /* "%start"  */
  YYSYMBOL_PERCENT_TOKEN_TABLE = 38,       /* "%token-table"  */
  YYSYMBOL_PERCENT_VERBOSE = 39,           /* "%verbose"  */
  YYSYMBOL_PERCENT_YACC = 40,              /* "%yacc"  */
  YYSYMBOL_BRACED_CODE = 41,               /* "{...}"  */
  YYSYMBOL_BRACED_PREDICATE = 42,          /* "%?{...}"  */
  YYSYMBOL_BRACKETED_ID = 43,              /* "[identifier]"  */
  YYSYMBOL_CHAR_LITERAL = 44,              /* "character literal"  */
  YYSYMBOL_COLON = 45,                     /* ":"  */
  YYSYMBOL_EPILOGUE = 46,                  /* "epilogue"  */
  YYSYMBOL_EQUAL = 47,                     /* "="  */
  YYSYMBOL_ID = 48,                        /* "identifier"  */
  YYSYMBOL_ID_COLON = 49,                  /* "identifier:"  */
  YYSYMBOL_PERCENT_PERCENT = 50,           /* "%%"  */
  YYSYMBOL_PIPE = 51,                      /* "|"  */
  YYSYMBOL_PROLOGUE = 52,                  /* "%{...%}"  */
  YYSYMBOL_SEMICOLON = 53,                 /* ";"  */
  YYSYMBOL_TAG = 54,                       /* "<tag>"  */
  YYSYMBOL_TAG_ANY = 55,                   /* "<*>"  */
  YYSYMBOL_TAG_NONE = 56,                  /* "<>"  */
  YYSYMBOL_INT_LITERAL = 57,               /* "integer literal"  */
  YYSYMBOL_PERCENT_PARAM = 58,             /* "%param"  */
  YYSYMBOL_PERCENT_UNION = 59,             /* "%union"  */
  YYSYMBOL_PERCENT_EMPTY = 60,             /* "%empty"  */
  YYSYMBOL_YYACCEPT = 61,                  /* $accept  */
  YYSYMBOL_input = 62,                     /* input  */
  YYSYMBOL_prologue_declarations = 63,     /* prologue_declarations  */
  YYSYMBOL_prologue_declaration = 64,      /* prologue_declaration  */
  YYSYMBOL_65_1 = 65,                      /* $@1  */
  YYSYMBOL_params = 66,                    /* params  */
  YYSYMBOL_grammar_declaration = 67,       /* grammar_declaration  */
  YYSYMBOL_code_props_type = 68,           /* code_props_type  */
  YYSYMBOL_union_name = 69,                /* union_name  */
  YYSYMBOL_symbol_declaration = 70,        /* symbol_declaration  */
  YYSYMBOL_71_2 = 71,                      /* $@2  */
  YYSYMBOL_72_3 = 72,                      /* $@3  */
  YYSYMBOL_73_4 = 73,                      /* $@4  */
  YYSYMBOL_precedence_declarator = 74,     /* precedence_declarator  */
  YYSYMBOL_75_string_opt = 75,             /* string.opt  */
  YYSYMBOL_76_tag_opt = 76,                /* tag.opt  */
  YYSYMBOL_generic_symlist = 77,           /* generic_symlist  */
  YYSYMBOL_generic_symlist_item = 78,      /* generic_symlist_item  */
  YYSYMBOL_tag = 79,                       /* tag  */
  YYSYMBOL_nterm_decls = 80,               /* nterm_decls  */
  YYSYMBOL_token_decls = 81,               /* token_decls  */
  YYSYMBOL_82_token_decl_1 = 82,           /* token_decl.1  */
  YYSYMBOL_token_decl = 83,                /* token_decl  */
  YYSYMBOL_84_int_opt = 84,                /* int.opt  */
  YYSYMBOL_alias = 85,                     /* alias  */
  YYSYMBOL_token_decls_for_prec = 86,      /* token_decls_for_prec  */
  YYSYMBOL_87_token_decl_for_prec_1 = 87,  /* token_decl_for_prec.1  */
  YYSYMBOL_token_decl_for_prec = 88,       /* token_decl_for_prec  */
  YYSYMBOL_symbol_decls = 89,              /* symbol_decls  */
  YYSYMBOL_90_symbols_1 = 90,              /* symbols.1  */
  YYSYMBOL_grammar = 91,                   /* grammar  */
  YYSYMBOL_rules_or_grammar_declaration = 92, /* rules_or_grammar_declaration  */
  YYSYMBOL_rules = 93,                     /* rules  */
  YYSYMBOL_94_5 = 94,                      /* $@5  */
  YYSYMBOL_95_rhses_1 = 95,                /* rhses.1  */
  YYSYMBOL_rhs = 96,                       /* rhs  */
  YYSYMBOL_97_named_ref_opt = 97,          /* named_ref.opt  */
  YYSYMBOL_variable = 98,                  /* variable  */
  YYSYMBOL_value = 99,                     /* value  */
  YYSYMBOL_id = 100,                       /* id  */
  YYSYMBOL_id_colon = 101,                 /* id_colon  */
  YYSYMBOL_symbol = 102,                   /* symbol  */
  YYSYMBOL_string_as_id = 103,             /* string_as_id  */
  YYSYMBOL_104_epilogue_opt = 104          /* epilogue.opt  */
};
typedef enum yysymbol_kind_t yysymbol_kind_t;



/* Unqualified %code blocks.  */
#line 41 "src/parse-gram.y"

  #include "system.h"

  #include <c-ctype.h>
  #include <quotearg.h>
  #include <vasnprintf.h>
  #include <xmemdup0.h>

  #include "complain.h"
  #include "conflicts.h"
  #include "files.h"
  #include "getargs.h"
  #include "gram.h"
  #include "named-ref.h"
  #include "reader.h"
  #include "scan-code.h"
  #include "scan-gram.h"
  #include "strversion.h"

  /* Pretend to be at least that version, to check features published
     in that version while developping it.  */
  static const char* api_version = "3.8";

  static int current_prec = 0;
  static location current_lhs_loc;
  static named_ref *current_lhs_named_ref;
  static symbol *current_lhs_symbol;
  static symbol_class current_class = unknown_sym;

  /** Set the new current left-hand side symbol, possibly common
   * to several right-hand side parts of rule.
   */
  static void current_lhs (symbol *sym, location loc, named_ref *ref);

  #define YYLLOC_DEFAULT(Current, Rhs, N)         \
    (Current) = lloc_default (Rhs, N)
  static YYLTYPE lloc_default (YYLTYPE const *, int);

  #define YY_LOCATION_PRINT(File, Loc)            \
    location_print (Loc, File)

  /* Strip initial '{' and final '}' (must be first and last characters).
     Return the result.  */
  static char *strip_braces (char *code);

  /* Convert CODE by calling code_props_plain_init if PLAIN, otherwise
     code_props_symbol_action_init.  Calls
     gram_scanner_last_string_free to release the latest string from
     the scanner (should be CODE). */
  static char const *translate_code (char *code, location loc, bool plain);

  /* Convert CODE by calling code_props_plain_init after having
     stripped the first and last characters (expected to be '{', and
     '}').  Calls gram_scanner_last_string_free to release the latest
     string from the scanner (should be CODE). */
  static char const *translate_code_braceless (char *code, location loc);

  /* Handle a %header directive.  */
  static void handle_header (char const *value);

  /* Handle a %error-verbose directive.  */
  static void handle_error_verbose (location const *loc, char const *directive);

  /* Handle a %file-prefix directive.  */
  static void handle_file_prefix (location const *loc,
                                  location const *dir_loc,
                                  char const *directive, char const *value);

  /* Handle a %language directive.  */
  static void handle_language (location const *loc, char const *lang);

  /* Handle a %name-prefix directive.  */
  static void handle_name_prefix (location const *loc,
                                  char const *directive, char const *value);

  /* Handle a %pure-parser directive.  */
  static void handle_pure_parser (location const *loc, char const *directive);

  /* Handle a %require directive.  */
  static void handle_require (location const *loc, char const *version);

  /* Handle a %skeleton directive.  */
  static void handle_skeleton (location const *loc, char const *skel);

  /* Handle a %yacc directive.  */
  static void handle_yacc (location const *loc);

  /* Implementation of yyerror.  */
  static void gram_error (location const *, char const *);

  /* A string that describes a char (e.g., 'a' -> "'a'").  */
  static char const *char_name (char);

  /* Add style to semantic values in traces.  */
  static void tron (FILE *yyo);
  static void troff (FILE *yyo);

  /* Interpret a quoted string (such as `"Hello, \"World\"\n\""`).
     Manages the memory of the result.  */
  static char *unquote (const char *str);

  /* Discard the latest unquoted string.  */
  static void unquote_free (char *last_string);
#line 278 "src/parse-gram.y"

  /** Add a lex-param and/or a parse-param.
   *
   * \param type  where to push this formal argument.
   * \param decl  the formal argument.  Destroyed.
   * \param loc   the location in the source.
   */
  static void add_param (param_type type, char *decl, location loc);
  static param_type current_param = param_none;

#line 337 "src/parse-gram.c"

#ifdef short
# undef short
#endif

/* On compilers that do not define __PTRDIFF_MAX__ etc., make sure
   <limits.h> and (if available) <stdint.h> are included
   so that the code can choose integer types of a good width.  */

#ifndef __PTRDIFF_MAX__
# include <limits.h> /* INFRINGES ON USER NAME SPACE */
# if defined __STDC_VERSION__ && 199901 <= __STDC_VERSION__
#  include <stdint.h> /* INFRINGES ON USER NAME SPACE */
#  define YY_STDINT_H
# endif
#endif

/* Narrow types that promote to a signed type and that can represent a
   signed or unsigned integer of at least N bits.  In tables they can
   save space and decrease cache pressure.  Promoting to a signed type
   helps avoid bugs in integer arithmetic.  */

#ifdef __INT_LEAST8_MAX__
typedef __INT_LEAST8_TYPE__ yytype_int8;
#elif defined YY_STDINT_H
typedef int_least8_t yytype_int8;
#else
typedef signed char yytype_int8;
#endif

#ifdef __INT_LEAST16_MAX__
typedef __INT_LEAST16_TYPE__ yytype_int16;
#elif defined YY_STDINT_H
typedef int_least16_t yytype_int16;
#else
typedef short yytype_int16;
#endif

/* Work around bug in HP-UX 11.23, which defines these macros
   incorrectly for preprocessor constants.  This workaround can likely
   be removed in 2023, as HPE has promised support for HP-UX 11.23
   (aka HP-UX 11i v2) only through the end of 2022; see Table 2 of
   <https://h20195.www2.hpe.com/V2/getpdf.aspx/4AA4-7673ENW.pdf>.  */
#ifdef __hpux
# undef UINT_LEAST8_MAX
# undef UINT_LEAST16_MAX
# define UINT_LEAST8_MAX 255
# define UINT_LEAST16_MAX 65535
#endif

#if defined __UINT_LEAST8_MAX__ && __UINT_LEAST8_MAX__ <= __INT_MAX__
typedef __UINT_LEAST8_TYPE__ yytype_uint8;
#elif (!defined __UINT_LEAST8_MAX__ && defined YY_STDINT_H \
       && UINT_LEAST8_MAX <= INT_MAX)
typedef uint_least8_t yytype_uint8;
#elif !defined __UINT_LEAST8_MAX__ && UCHAR_MAX <= INT_MAX
typedef unsigned char yytype_uint8;
#else
typedef short yytype_uint8;
#endif

#if defined __UINT_LEAST16_MAX__ && __UINT_LEAST16_MAX__ <= __INT_MAX__
typedef __UINT_LEAST16_TYPE__ yytype_uint16;
#elif (!defined __UINT_LEAST16_MAX__ && defined YY_STDINT_H \
       && UINT_LEAST16_MAX <= INT_MAX)
typedef uint_least16_t yytype_uint16;
#elif !defined __UINT_LEAST16_MAX__ && USHRT_MAX <= INT_MAX
typedef unsigned short yytype_uint16;
#else
typedef int yytype_uint16;
#endif

#ifndef YYPTRDIFF_T
# if defined __PTRDIFF_TYPE__ && defined __PTRDIFF_MAX__
#  define YYPTRDIFF_T __PTRDIFF_TYPE__
#  define YYPTRDIFF_MAXIMUM __PTRDIFF_MAX__
# elif defined PTRDIFF_MAX
#  ifndef ptrdiff_t
#   include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  endif
#  define YYPTRDIFF_T ptrdiff_t
#  define YYPTRDIFF_MAXIMUM PTRDIFF_MAX
# else
#  define YYPTRDIFF_T long
#  define YYPTRDIFF_MAXIMUM LONG_MAX
# endif
#endif

#ifndef YYSIZE_T
# ifdef __SIZE_TYPE__
#  define YYSIZE_T __SIZE_TYPE__
# elif defined size_t
#  define YYSIZE_T size_t
# elif defined __STDC_VERSION__ && 199901 <= __STDC_VERSION__
#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  define YYSIZE_T size_t
# else
#  define YYSIZE_T unsigned
# endif
#endif

#define YYSIZE_MAXIMUM                                  \
  YY_CAST (YYPTRDIFF_T,                                 \
           (YYPTRDIFF_MAXIMUM < YY_CAST (YYSIZE_T, -1)  \
            ? YYPTRDIFF_MAXIMUM                         \
            : YY_CAST (YYSIZE_T, -1)))

#define YYSIZEOF(X) YY_CAST (YYPTRDIFF_T, sizeof (X))


/* Stored state numbers (used for stacks). */
typedef yytype_uint8 yy_state_t;

/* State numbers in computations.  */
typedef int yy_state_fast_t;

#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 N_
# define N_(Msgid) Msgid
#endif


#ifndef YY_ATTRIBUTE_PURE
# if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
#  define YY_ATTRIBUTE_PURE __attribute__ ((__pure__))
# else
#  define YY_ATTRIBUTE_PURE
# endif
#endif

#ifndef YY_ATTRIBUTE_UNUSED
# if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__)
#  define YY_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
# else
#  define YY_ATTRIBUTE_UNUSED
# endif
#endif

/* Suppress unused-variable warnings by "using" E.  */
#if ! defined lint || defined __GNUC__
# define YY_USE(E) ((void) (E))
#else
# define YY_USE(E) /* empty */
#endif

/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
#if defined __GNUC__ && ! defined __ICC && 406 <= __GNUC__ * 100 + __GNUC_MINOR__
# if __GNUC__ * 100 + __GNUC_MINOR__ < 407
#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
    _Pragma ("GCC diagnostic push")                                     \
    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")
# else
#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
    _Pragma ("GCC diagnostic push")                                     \
    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")              \
    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
# endif
# 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 __cplusplus && defined __GNUC__ && ! defined __ICC && 6 <= __GNUC__
# define YY_IGNORE_USELESS_CAST_BEGIN                          \
    _Pragma ("GCC diagnostic push")                            \
    _Pragma ("GCC diagnostic ignored \"-Wuseless-cast\"")
# define YY_IGNORE_USELESS_CAST_END            \
    _Pragma ("GCC diagnostic pop")
#endif
#ifndef YY_IGNORE_USELESS_CAST_BEGIN
# define YY_IGNORE_USELESS_CAST_BEGIN
# define YY_IGNORE_USELESS_CAST_END
#endif


#define YY_ASSERT(E) ((void) (0 && (E)))

#if 1

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

# 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
# define YYCOPY_NEEDED 1
#endif /* 1 */

#if (! defined yyoverflow \
     && (! defined __cplusplus \
         || (defined GRAM_LTYPE_IS_TRIVIAL && GRAM_LTYPE_IS_TRIVIAL \
             && defined GRAM_STYPE_IS_TRIVIAL && GRAM_STYPE_IS_TRIVIAL)))

/* A type that is properly aligned for any stack member.  */
union yyalloc
{
  yy_state_t 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 (YYSIZEOF (union yyalloc) - 1)

/* The size of an array large to enough to hold all stacks, each with
   N elements.  */
# define YYSTACK_BYTES(N) \
     ((N) * (YYSIZEOF (yy_state_t) + YYSIZEOF (YYSTYPE) \
             + YYSIZEOF (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                                                                  \
      {                                                                 \
        YYPTRDIFF_T yynewbytes;                                         \
        YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
        Stack = &yyptr->Stack_alloc;                                    \
        yynewbytes = yystacksize * YYSIZEOF (*Stack) + YYSTACK_GAP_MAXIMUM; \
        yyptr += yynewbytes / YYSIZEOF (*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, YY_CAST (YYSIZE_T, (Count)) * sizeof (*(Src)))
#  else
#   define YYCOPY(Dst, Src, Count)              \
      do                                        \
        {                                       \
          YYPTRDIFF_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  3
/* YYLAST -- Last index in YYTABLE.  */
#define YYLAST   240

/* YYNTOKENS -- Number of terminals.  */
#define YYNTOKENS  61
/* YYNNTS -- Number of nonterminals.  */
#define YYNNTS  44
/* YYNRULES -- Number of rules.  */
#define YYNRULES  125
/* YYNSTATES -- Number of states.  */
#define YYNSTATES  169

/* YYMAXUTOK -- Last valid token kind.  */
#define YYMAXUTOK   315


/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM
   as returned by yylex, with out-of-bounds checking.  */
#define YYTRANSLATE(YYX) YY_CAST (yysymbol_kind_t, YYX)

#if GRAM_DEBUG
/* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
static const yytype_int16 yyrline[] =
{
       0,   310,   310,   319,   320,   324,   325,   331,   335,   340,
     341,   342,   343,   344,   345,   350,   355,   356,   357,   358,
     359,   360,   360,   361,   362,   363,   364,   365,   366,   367,
     368,   372,   373,   382,   383,   387,   398,   402,   406,   414,
     424,   425,   435,   436,   442,   455,   455,   460,   460,   465,
     465,   470,   480,   481,   482,   483,   488,   489,   493,   494,
     499,   500,   504,   505,   509,   510,   511,   524,   533,   537,
     541,   549,   550,   554,   567,   568,   573,   574,   575,   593,
     597,   601,   609,   611,   616,   623,   633,   637,   641,   649,
     655,   668,   669,   675,   676,   677,   684,   684,   692,   693,
     694,   699,   702,   704,   706,   708,   710,   712,   714,   716,
     718,   723,   724,   733,   757,   758,   759,   760,   772,   774,
     798,   803,   804,   809,   817,   818
};
#endif

/** Accessing symbol of state STATE.  */
#define YY_ACCESSING_SYMBOL(State) YY_CAST (yysymbol_kind_t, yystos[State])

#if 1
/* The user-facing name of the symbol whose (internal) number is
   YYSYMBOL.  No bounds checking.  */
static const char *yysymbol_name (yysymbol_kind_t yysymbol) YY_ATTRIBUTE_UNUSED;

static const char *
yysymbol_name (yysymbol_kind_t yysymbol)
{
  static const char *const yy_sname[] =
  {
  N_("end of file"), N_("error"), N_("invalid token"), N_("string"),
  N_("translatable string"), "%token", "%nterm", "%type", "%destructor",
  "%printer", "%left", "%right", "%nonassoc", "%precedence", "%prec",
  "%dprec", "%merge", "%code", "%default-prec", "%define",
  "%error-verbose", "%expect", "%expect-rr", "%file-prefix", "%<flag>",
  "%glr-parser", "%header", "%initial-action", "%language", "%name-prefix",
  "%no-default-prec", "%no-lines", "%nondeterministic-parser", "%output",
  "%pure-parser", "%require", "%skeleton", "%start", "%token-table",
  "%verbose", "%yacc", "{...}", "%?{...}", N_("[identifier]"),
  N_("character literal"), ":", N_("epilogue"), "=", N_("identifier"),
  N_("identifier:"), "%%", "|", "%{...%}", ";", N_("<tag>"), "<*>", "<>",
  N_("integer literal"), "%param", "%union", "%empty", "$accept", "input",
  "prologue_declarations", "prologue_declaration", "$@1", "params",
  "grammar_declaration", "code_props_type", "union_name",
  "symbol_declaration", "$@2", "$@3", "$@4", "precedence_declarator",
  "string.opt", "tag.opt", "generic_symlist", "generic_symlist_item",
  "tag", "nterm_decls", "token_decls", "token_decl.1", "token_decl",
  "int.opt", "alias", "token_decls_for_prec", "token_decl_for_prec.1",
  "token_decl_for_prec", "symbol_decls", "symbols.1", "grammar",
  "rules_or_grammar_declaration", "rules", "$@5", "rhses.1", "rhs",
  "named_ref.opt", "variable", "value", "id", "id_colon", "symbol",
  "string_as_id", "epilogue.opt", YY_NULLPTR
  };
  /* YYTRANSLATABLE[SYMBOL-NUM] -- Whether YY_SNAME[SYMBOL-NUM] is
     internationalizable.  */
  static yytype_int8 yytranslatable[] =
  {
       1,     1,     1,     1,     1,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
       0,     0,     0,     1,     1,     0,     1,     0,     1,     1,
       0,     0,     0,     0,     1,     0,     0,     1,     0,     0,
       0
  };
  return (yysymbol < YYNTOKENS && yytranslatable[yysymbol]
          ? _(yy_sname[yysymbol])
          : yy_sname[yysymbol]);
}
#endif

#define YYPACT_NINF (-148)

#define yypact_value_is_default(Yyn) \
  ((Yyn) == YYPACT_NINF)

#define YYTABLE_NINF (-125)

#define yytable_value_is_error(Yyn) \
  0

/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
   STATE-NUM.  */
static const yytype_int16 yypact[] =
{
    -148,    13,   113,  -148,   -27,  -148,  -148,  -148,  -148,  -148,
    -148,  -148,  -148,  -148,   -33,  -148,   -21,  -148,   -29,   -26,
      26,  -148,  -148,    27,    -9,    30,    31,  -148,  -148,  -148,
      32,  -148,    34,    36,   112,  -148,  -148,  -148,   168,  -148,
    -148,  -148,    -3,  -148,  -148,    19,  -148,     7,  -148,   -37,
     -37,   164,  -148,    33,  -148,     2,  -148,  -148,  -148,  -148,
    -148,  -148,  -148,  -148,  -148,  -148,  -148,  -148,  -148,  -148,
     112,  -148,  -148,  -148,     9,  -148,    20,    58,  -148,  -148,
      37,    38,  -148,    40,   155,   112,    35,   112,  -148,    41,
    -148,   -28,    43,   -28,  -148,    41,  -148,    43,   112,    46,
     112,  -148,  -148,  -148,  -148,  -148,  -148,  -148,  -148,    44,
    -148,  -148,  -148,  -148,  -148,    50,  -148,  -148,  -148,  -148,
     155,  -148,  -148,  -148,   112,   112,  -148,  -148,  -148,   -28,
     -28,  -148,    21,   112,   112,  -148,    59,  -148,  -148,   112,
     -28,  -148,  -148,  -148,   112,  -148,   -30,   180,  -148,  -148,
     112,    48,    49,    52,    53,  -148,  -148,  -148,    65,    37,
     180,  -148,  -148,  -148,  -148,  -148,    37,  -148,  -148
};

/* 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_int8 yydefact[] =
{
       3,     0,     0,     1,     0,    47,    45,    49,    40,    41,
      52,    53,    54,    55,     0,    36,     0,    10,     0,     0,
       0,     7,    14,    56,     0,     0,     0,    37,    18,    19,
       0,    23,     0,     0,     0,    26,    27,    28,     0,     6,
      30,    21,    42,     4,     5,     0,    33,     0,    29,     0,
       0,     0,    38,     0,   113,   114,    11,    12,    13,    57,
       9,    15,    16,    17,    20,    24,    25,   123,   119,   118,
      34,   121,    89,   122,     0,   120,     0,     0,    91,    93,
     111,     0,    43,     0,     0,     0,    51,    79,    82,    74,
      85,     0,    48,    68,    71,    74,    46,    67,     0,    50,
      86,    39,   116,   117,   115,     8,    90,    95,    94,     0,
      92,     2,   112,    96,    32,    22,    44,    64,    65,    66,
      35,    60,    63,    62,    80,     0,    83,    75,    84,    69,
       0,    72,    76,    87,     0,   125,     0,    31,    61,    81,
      70,    78,    73,    77,    88,   101,    97,    98,   101,   100,
       0,     0,     0,     0,     0,   104,    59,   105,     0,   111,
      99,   106,   107,   108,   109,   110,   111,   102,   103
};

/* YYPGOTO[NTERM-NUM].  */
static const yytype_int16 yypgoto[] =
{
    -148,  -148,  -148,  -148,  -148,  -148,   109,  -148,  -148,  -148,
    -148,  -148,  -148,  -148,  -148,  -148,  -148,    -7,  -148,  -148,
      66,   -73,   -87,    60,  -148,  -148,   -71,   -83,  -148,   -50,
    -148,    51,  -148,  -148,  -148,   -19,  -147,  -148,  -148,   -47,
    -148,   -48,   -38,  -148
};

/* YYDEFGOTO[NTERM-NUM].  */
static const yytype_uint8 yydefgoto[] =
{
       0,     1,     2,    43,    81,   115,    76,    45,    83,    46,
      50,    49,    51,    47,    60,   158,   120,   121,   122,    96,
      92,    93,    94,   128,   142,    86,    87,    88,    99,    70,
      77,    78,    79,   136,   146,   147,   113,    55,   105,    71,
      80,    72,    73,   111
};

/* 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_int16 yytable[] =
{
      89,   100,    95,    95,   126,   102,   131,    68,    52,    90,
      67,    69,   167,     3,   124,    53,    68,    91,   129,   168,
      69,   148,   106,   149,    67,   141,    48,    54,    56,    58,
      59,    57,    61,    62,    63,    64,   123,    65,    89,    66,
      89,   126,   131,   103,    95,    82,    95,    90,   133,    90,
     104,    68,   106,   131,   139,    69,   126,   140,  -124,    74,
      84,    85,   107,     5,     6,     7,     8,     9,    10,    11,
      12,    13,   123,   108,   101,    14,    15,    89,    89,   114,
     112,   116,    95,    95,   144,   106,    90,    90,    27,   125,
     135,   137,    89,    95,   143,    34,   106,   130,   127,   159,
     134,    90,   161,   163,   145,   162,   166,    75,   109,   164,
     165,    44,   159,   138,     4,    67,    97,    42,     5,     6,
       7,     8,     9,    10,    11,    12,    13,     0,   110,   160,
      14,    15,    16,    17,    18,    19,    20,    21,    22,    23,
      24,    25,    26,    27,    28,    29,    30,    31,    32,    33,
      34,    35,    36,    37,     0,   132,    68,     0,    67,     0,
      69,     0,     0,    38,     0,    39,    40,    67,     0,    74,
       0,    41,    42,     5,     6,     7,     8,     9,    10,    11,
      12,    13,     0,    67,     0,    14,    15,     0,     0,     0,
       0,     0,     0,     0,   150,   151,   152,     0,    27,    68,
       0,   153,   154,    69,     0,    34,     0,     0,    68,   117,
     118,   119,    69,     0,     0,     0,     0,    75,    98,     0,
       0,   -58,   155,     0,    68,     0,     0,    42,    69,     0,
       0,     0,     0,     0,   156,     0,     0,     0,     0,     0,
     157
};

static const yytype_int16 yycheck[] =
{
      47,    51,    49,    50,    87,     3,    93,    44,    41,    47,
       3,    48,   159,     0,    85,    48,    44,    54,    91,   166,
      48,    51,    70,    53,     3,     4,    53,    48,    57,     3,
       3,    57,    41,     3,     3,     3,    84,     3,    85,     3,
      87,   124,   129,    41,    91,    48,    93,    85,    98,    87,
      48,    44,   100,   140,   125,    48,   139,   130,     0,     1,
      41,    54,    53,     5,     6,     7,     8,     9,    10,    11,
      12,    13,   120,    53,    41,    17,    18,   124,   125,    41,
      43,    41,   129,   130,   134,   133,   124,   125,    30,    54,
      46,    41,   139,   140,   132,    37,   144,    54,    57,   147,
      54,   139,   150,    54,    45,    57,    41,    49,    50,    57,
      57,     2,   160,   120,     1,     3,    50,    59,     5,     6,
       7,     8,     9,    10,    11,    12,    13,    -1,    77,   148,
      17,    18,    19,    20,    21,    22,    23,    24,    25,    26,
      27,    28,    29,    30,    31,    32,    33,    34,    35,    36,
      37,    38,    39,    40,    -1,    95,    44,    -1,     3,    -1,
      48,    -1,    -1,    50,    -1,    52,    53,     3,    -1,     1,
      -1,    58,    59,     5,     6,     7,     8,     9,    10,    11,
      12,    13,    -1,     3,    -1,    17,    18,    -1,    -1,    -1,
      -1,    -1,    -1,    -1,    14,    15,    16,    -1,    30,    44,
      -1,    21,    22,    48,    -1,    37,    -1,    -1,    44,    54,
      55,    56,    48,    -1,    -1,    -1,    -1,    49,    54,    -1,
      -1,    41,    42,    -1,    44,    -1,    -1,    59,    48,    -1,
      -1,    -1,    -1,    -1,    54,    -1,    -1,    -1,    -1,    -1,
      60
};

/* YYSTOS[STATE-NUM] -- The symbol kind of the accessing symbol of
   state STATE-NUM.  */
static const yytype_int8 yystos[] =
{
       0,    62,    63,     0,     1,     5,     6,     7,     8,     9,
      10,    11,    12,    13,    17,    18,    19,    20,    21,    22,
      23,    24,    25,    26,    27,    28,    29,    30,    31,    32,
      33,    34,    35,    36,    37,    38,    39,    40,    50,    52,
      53,    58,    59,    64,    67,    68,    70,    74,    53,    72,
      71,    73,    41,    48,    48,    98,    57,    57,     3,     3,
      75,    41,     3,     3,     3,     3,     3,     3,    44,    48,
      90,   100,   102,   103,     1,    49,    67,    91,    92,    93,
     101,    65,    48,    69,    41,    54,    86,    87,    88,   100,
     103,    54,    81,    82,    83,   100,    80,    81,    54,    89,
      90,    41,     3,    41,    48,    99,   102,    53,    53,    50,
      92,   104,    43,    97,    41,    66,    41,    54,    55,    56,
      77,    78,    79,   102,    87,    54,    88,    57,    84,    82,
      54,    83,    84,    90,    54,    46,    94,    41,    78,    87,
      82,     4,    85,   103,    90,    45,    95,    96,    51,    53,
      14,    15,    16,    21,    22,    42,    54,    60,    76,   102,
      96,   102,    57,    54,    57,    57,    41,    97,    97
};

/* YYR1[RULE-NUM] -- Symbol kind of the left-hand side of rule RULE-NUM.  */
static const yytype_int8 yyr1[] =
{
       0,    61,    62,    63,    63,    64,    64,    64,    64,    64,
      64,    64,    64,    64,    64,    64,    64,    64,    64,    64,
      64,    65,    64,    64,    64,    64,    64,    64,    64,    64,
      64,    66,    66,    67,    67,    67,    67,    67,    67,    67,
      68,    68,    69,    69,    67,    71,    70,    72,    70,    73,
      70,    70,    74,    74,    74,    74,    75,    75,    76,    76,
      77,    77,    78,    78,    79,    79,    79,    80,    81,    81,
      81,    82,    82,    83,    84,    84,    85,    85,    85,    86,
      86,    86,    87,    87,    88,    88,    89,    89,    89,    90,
      90,    91,    91,    92,    92,    92,    94,    93,    95,    95,
      95,    96,    96,    96,    96,    96,    96,    96,    96,    96,
      96,    97,    97,    98,    99,    99,    99,    99,   100,   100,
     101,   102,   102,   103,   104,   104
};

/* YYR2[RULE-NUM] -- Number of symbols on the right-hand side of rule RULE-NUM.  */
static const yytype_int8 yyr2[] =
{
       0,     2,     4,     0,     2,     1,     1,     1,     3,     2,
       1,     2,     2,     2,     1,     2,     2,     2,     1,     1,
       2,     0,     3,     1,     2,     2,     1,     1,     1,     2,
       1,     2,     1,     1,     2,     3,     1,     1,     2,     3,
       1,     1,     0,     1,     3,     0,     3,     0,     3,     0,
       3,     2,     1,     1,     1,     1,     0,     1,     0,     1,
       1,     2,     1,     1,     1,     1,     1,     1,     1,     2,
       3,     1,     2,     3,     0,     1,     0,     1,     1,     1,
       2,     3,     1,     2,     2,     1,     1,     2,     3,     1,
       2,     1,     2,     1,     2,     2,     0,     5,     1,     3,
       2,     0,     3,     4,     2,     2,     3,     3,     3,     3,
       3,     0,     1,     1,     0,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     0,     2
};


enum { YYENOMEM = -2 };

#define yyerrok         (yyerrstatus = 0)
#define yyclearin       (yychar = GRAM_EMPTY)

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


#define YYRECOVERING()  (!!yyerrstatus)

#define YYBACKUP(Token, Value)                                    \
  do                                                              \
    if (yychar == GRAM_EMPTY)                                        \
      {                                                           \
        yychar = (Token);                                         \
        yylval = (Value);                                         \
        YYPOPSTACK (yylen);                                       \
        yystate = *yyssp;                                         \
        YY_LAC_DISCARD ("YYBACKUP");                              \
        goto yybackup;                                            \
      }                                                           \
    else                                                          \
      {                                                           \
        yyerror (&yylloc, YY_("syntax error: cannot back up")); \
        YYERROR;                                                  \
      }                                                           \
  while (0)

/* Backward compatibility with an undocumented macro.
   Use GRAM_error or GRAM_UNDEF. */
#define YYERRCODE GRAM_UNDEF

/* 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 GRAM_DEBUG

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

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


/* YYLOCATION_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 YYLOCATION_PRINT

#  if defined YY_LOCATION_PRINT

   /* Temporary convenience wrapper in case some people defined the
      undocumented and private YY_LOCATION_PRINT macros.  */
#   define YYLOCATION_PRINT(File, Loc)  YY_LOCATION_PRINT(File, *(Loc))

#  elif defined GRAM_LTYPE_IS_TRIVIAL && GRAM_LTYPE_IS_TRIVIAL

/* Print *YYLOCP on YYO.  Private, do not rely on its existence. */

YY_ATTRIBUTE_UNUSED
static int
yy_location_print_ (FILE *yyo, YYLTYPE const * const yylocp)
{
  int 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 YYLOCATION_PRINT  yy_location_print_

    /* Temporary convenience wrapper in case some people defined the
       undocumented and private YY_LOCATION_PRINT macros.  */
#   define YY_LOCATION_PRINT(File, Loc)  YYLOCATION_PRINT(File, &(Loc))

#  else

#   define YYLOCATION_PRINT(File, Loc) ((void) 0)
    /* Temporary convenience wrapper in case some people defined the
       undocumented and private YY_LOCATION_PRINT macros.  */
#   define YY_LOCATION_PRINT  YYLOCATION_PRINT

#  endif
# endif /* !defined YYLOCATION_PRINT */


# define YY_SYMBOL_PRINT(Title, Kind, Value, Location)                    \
do {                                                                      \
  if (yydebug)                                                            \
    {                                                                     \
      YYFPRINTF (stderr, "%s ", Title);                                   \
      yy_symbol_print (stderr,                                            \
                  Kind, Value, Location); \
      YYFPRINTF (stderr, "\n");                                           \
    }                                                                     \
} while (0)


/*-----------------------------------.
| Print this symbol's value on YYO.  |
`-----------------------------------*/

static void
yy_symbol_value_print (FILE *yyo,
                       yysymbol_kind_t yykind, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp)
{
  FILE *yyoutput = yyo;
  YY_USE (yyoutput);
  YY_USE (yylocationp);
  if (!yyvaluep)
    return;
/* "%code pre-printer" blocks.  */
#line 230 "src/parse-gram.y"
tron (yyo);

#line 1100 "src/parse-gram.c"
  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  switch (yykind)
    {
    case YYSYMBOL_STRING: /* "string"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).STRING), yyo); }
#line 1107 "src/parse-gram.c"
        break;

    case YYSYMBOL_TSTRING: /* "translatable string"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).TSTRING), yyo); }
#line 1113 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_ERROR_VERBOSE: /* "%error-verbose"  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).PERCENT_ERROR_VERBOSE), yyo); }
#line 1119 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_FILE_PREFIX: /* "%file-prefix"  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).PERCENT_FILE_PREFIX), yyo); }
#line 1125 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_FLAG: /* "%<flag>"  */
#line 247 "src/parse-gram.y"
         { fprintf (yyo, "%%%s", ((*yyvaluep).PERCENT_FLAG)); }
#line 1131 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_NAME_PREFIX: /* "%name-prefix"  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).PERCENT_NAME_PREFIX), yyo); }
#line 1137 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_PURE_PARSER: /* "%pure-parser"  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).PERCENT_PURE_PARSER), yyo); }
#line 1143 "src/parse-gram.c"
        break;

    case YYSYMBOL_BRACED_CODE: /* "{...}"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).BRACED_CODE), yyo); }
#line 1149 "src/parse-gram.c"
        break;

    case YYSYMBOL_BRACED_PREDICATE: /* "%?{...}"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).BRACED_PREDICATE), yyo); }
#line 1155 "src/parse-gram.c"
        break;

    case YYSYMBOL_BRACKETED_ID: /* "[identifier]"  */
#line 245 "src/parse-gram.y"
         { fprintf (yyo, "[%s]", ((*yyvaluep).BRACKETED_ID)); }
#line 1161 "src/parse-gram.c"
        break;

    case YYSYMBOL_CHAR_LITERAL: /* "character literal"  */
#line 234 "src/parse-gram.y"
         { fputs (char_name (((*yyvaluep).CHAR_LITERAL)), yyo); }
#line 1167 "src/parse-gram.c"
        break;

    case YYSYMBOL_EPILOGUE: /* "epilogue"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).EPILOGUE), yyo); }
#line 1173 "src/parse-gram.c"
        break;

    case YYSYMBOL_ID: /* "identifier"  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).ID), yyo); }
#line 1179 "src/parse-gram.c"
        break;

    case YYSYMBOL_ID_COLON: /* "identifier:"  */
#line 246 "src/parse-gram.y"
         { fprintf (yyo, "%s:", ((*yyvaluep).ID_COLON)); }
#line 1185 "src/parse-gram.c"
        break;

    case YYSYMBOL_PROLOGUE: /* "%{...%}"  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).PROLOGUE), yyo); }
#line 1191 "src/parse-gram.c"
        break;

    case YYSYMBOL_TAG: /* "<tag>"  */
#line 248 "src/parse-gram.y"
         { fprintf (yyo, "<%s>", ((*yyvaluep).TAG)); }
#line 1197 "src/parse-gram.c"
        break;

    case YYSYMBOL_INT_LITERAL: /* "integer literal"  */
#line 251 "src/parse-gram.y"
         { fprintf (yyo, "%d", ((*yyvaluep).INT_LITERAL)); }
#line 1203 "src/parse-gram.c"
        break;

    case YYSYMBOL_PERCENT_PARAM: /* "%param"  */
#line 290 "src/parse-gram.y"
{
  switch (((*yyvaluep).PERCENT_PARAM))
    {
#define CASE(In, Out)                                           \
      case param_ ## In: fputs ("%" #Out, yyo); break
      CASE (lex,   lex-param);
      CASE (parse, parse-param);
      CASE (both,  param);
#undef CASE
      case param_none: aver (false); break;
    }
}
#line 1220 "src/parse-gram.c"
        break;

    case YYSYMBOL_code_props_type: /* code_props_type  */
#line 422 "src/parse-gram.y"
         { fprintf (yyo, "%s", code_props_type_string (((*yyvaluep).code_props_type))); }
#line 1226 "src/parse-gram.c"
        break;

    case YYSYMBOL_75_string_opt: /* string.opt  */
#line 237 "src/parse-gram.y"
         { fputs (((*yyvaluep).yykind_75), yyo); }
#line 1232 "src/parse-gram.c"
        break;

    case YYSYMBOL_76_tag_opt: /* tag.opt  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).yykind_76), yyo); }
#line 1238 "src/parse-gram.c"
        break;

    case YYSYMBOL_generic_symlist: /* generic_symlist  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).generic_symlist), yyo); }
#line 1244 "src/parse-gram.c"
        break;

    case YYSYMBOL_generic_symlist_item: /* generic_symlist_item  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).generic_symlist_item), yyo); }
#line 1250 "src/parse-gram.c"
        break;

    case YYSYMBOL_tag: /* tag  */
#line 248 "src/parse-gram.y"
         { fprintf (yyo, "<%s>", ((*yyvaluep).tag)); }
#line 1256 "src/parse-gram.c"
        break;

    case YYSYMBOL_nterm_decls: /* nterm_decls  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).nterm_decls), yyo); }
#line 1262 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decls: /* token_decls  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).token_decls), yyo); }
#line 1268 "src/parse-gram.c"
        break;

    case YYSYMBOL_82_token_decl_1: /* token_decl.1  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).yykind_82), yyo); }
#line 1274 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decl: /* token_decl  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).token_decl) ? ((*yyvaluep).token_decl)->tag : "<NULL>"); }
#line 1280 "src/parse-gram.c"
        break;

    case YYSYMBOL_84_int_opt: /* int.opt  */
#line 251 "src/parse-gram.y"
         { fprintf (yyo, "%d", ((*yyvaluep).yykind_84)); }
#line 1286 "src/parse-gram.c"
        break;

    case YYSYMBOL_alias: /* alias  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).alias) ? ((*yyvaluep).alias)->tag : "<NULL>"); }
#line 1292 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decls_for_prec: /* token_decls_for_prec  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).token_decls_for_prec), yyo); }
#line 1298 "src/parse-gram.c"
        break;

    case YYSYMBOL_87_token_decl_for_prec_1: /* token_decl_for_prec.1  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).yykind_87), yyo); }
#line 1304 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decl_for_prec: /* token_decl_for_prec  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).token_decl_for_prec) ? ((*yyvaluep).token_decl_for_prec)->tag : "<NULL>"); }
#line 1310 "src/parse-gram.c"
        break;

    case YYSYMBOL_symbol_decls: /* symbol_decls  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).symbol_decls), yyo); }
#line 1316 "src/parse-gram.c"
        break;

    case YYSYMBOL_90_symbols_1: /* symbols.1  */
#line 260 "src/parse-gram.y"
         { symbol_list_syms_print (((*yyvaluep).yykind_90), yyo); }
#line 1322 "src/parse-gram.c"
        break;

    case YYSYMBOL_variable: /* variable  */
#line 244 "src/parse-gram.y"
         { fputs (((*yyvaluep).variable), yyo); }
#line 1328 "src/parse-gram.c"
        break;

    case YYSYMBOL_value: /* value  */
#line 747 "src/parse-gram.y"
{
  switch (((*yyvaluep).value).kind)
    {
    case muscle_code:    fprintf (yyo,  "{%s}",  ((*yyvaluep).value).chars); break;
    case muscle_keyword: fprintf (yyo,   "%s",   ((*yyvaluep).value).chars); break;
    case muscle_string:  fprintf (yyo, "\"%s\"", ((*yyvaluep).value).chars); break;
    }
}
#line 1341 "src/parse-gram.c"
        break;

    case YYSYMBOL_id: /* id  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).id) ? ((*yyvaluep).id)->tag : "<NULL>"); }
#line 1347 "src/parse-gram.c"
        break;

    case YYSYMBOL_id_colon: /* id_colon  */
#line 255 "src/parse-gram.y"
         { fprintf (yyo, "%s:", ((*yyvaluep).id_colon)->tag); }
#line 1353 "src/parse-gram.c"
        break;

    case YYSYMBOL_symbol: /* symbol  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).symbol) ? ((*yyvaluep).symbol)->tag : "<NULL>"); }
#line 1359 "src/parse-gram.c"
        break;

    case YYSYMBOL_string_as_id: /* string_as_id  */
#line 254 "src/parse-gram.y"
         { fprintf (yyo, "%s", ((*yyvaluep).string_as_id) ? ((*yyvaluep).string_as_id)->tag : "<NULL>"); }
#line 1365 "src/parse-gram.c"
        break;

      default:
        break;
    }
  YY_IGNORE_MAYBE_UNINITIALIZED_END
/* "%code post-printer" blocks.  */
#line 231 "src/parse-gram.y"
troff (yyo);

#line 1376 "src/parse-gram.c"
}


/*---------------------------.
| Print this symbol on YYO.  |
`---------------------------*/

static void
yy_symbol_print (FILE *yyo,
                 yysymbol_kind_t yykind, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp)
{
  YYFPRINTF (yyo, "%s %s (",
             yykind < YYNTOKENS ? "token" : "nterm", yysymbol_name (yykind));

  YYLOCATION_PRINT (yyo, yylocationp);
  YYFPRINTF (yyo, ": ");
  yy_symbol_value_print (yyo, yykind, yyvaluep, yylocationp);
  YYFPRINTF (yyo, ")");
}

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

static void
yy_stack_print (yy_state_t *yybottom, yy_state_t *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 (yy_state_t *yyssp, YYSTYPE *yyvsp, YYLTYPE *yylsp,
                 int yyrule)
{
  int yylno = yyrline[yyrule];
  int yynrhs = yyr2[yyrule];
  int yyi;
  YYFPRINTF (stderr, "Reducing stack by rule %d (line %d):\n",
             yyrule - 1, yylno);
  /* The symbols being reduced.  */
  for (yyi = 0; yyi < yynrhs; yyi++)
    {
      YYFPRINTF (stderr, "   $%d = ", yyi + 1);
      yy_symbol_print (stderr,
                       YY_ACCESSING_SYMBOL (+yyssp[yyi + 1 - yynrhs]),
                       &yyvsp[(yyi + 1) - (yynrhs)],
                       &(yylsp[(yyi + 1) - (yynrhs)]));
      YYFPRINTF (stderr, "\n");
    }
}

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

/* Nonzero means print parse trace.  It is left uninitialized so that
   multiple parsers can coexist.  */
int yydebug;
#else /* !GRAM_DEBUG */
# define YYDPRINTF(Args) ((void) 0)
# define YY_SYMBOL_PRINT(Title, Kind, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !GRAM_DEBUG */


/* 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


/* Given a state stack such that *YYBOTTOM is its bottom, such that
   *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
   stack, and such that *YYCAPACITY is the maximum number of elements it
   can hold without a reallocation, make sure there is enough room to
   store YYADD more elements.  If not, allocate a new stack using
   YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
   *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
   location.  If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
   using YYSTACK_FREE.  Return 0 if successful or if no reallocation is
   required.  Return YYENOMEM if memory is exhausted.  */
static int
yy_lac_stack_realloc (YYPTRDIFF_T *yycapacity, YYPTRDIFF_T yyadd,
#if GRAM_DEBUG
                      char const *yydebug_prefix,
                      char const *yydebug_suffix,
#endif
                      yy_state_t **yybottom,
                      yy_state_t *yybottom_no_free,
                      yy_state_t **yytop, yy_state_t *yytop_empty)
{
  YYPTRDIFF_T yysize_old =
    *yytop == yytop_empty ? 0 : *yytop - *yybottom + 1;
  YYPTRDIFF_T yysize_new = yysize_old + yyadd;
  if (*yycapacity < yysize_new)
    {
      YYPTRDIFF_T yyalloc = 2 * yysize_new;
      yy_state_t *yybottom_new;
      /* Use YYMAXDEPTH for maximum stack size given that the stack
         should never need to grow larger than the main state stack
         needs to grow without LAC.  */
      if (YYMAXDEPTH < yysize_new)
        {
          YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
                      yydebug_suffix));
          return YYENOMEM;
        }
      if (YYMAXDEPTH < yyalloc)
        yyalloc = YYMAXDEPTH;
      yybottom_new =
        YY_CAST (yy_state_t *,
                 YYSTACK_ALLOC (YY_CAST (YYSIZE_T,
                                         yyalloc * YYSIZEOF (*yybottom_new))));
      if (!yybottom_new)
        {
          YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
                      yydebug_suffix));
          return YYENOMEM;
        }
      if (*yytop != yytop_empty)
        {
          YYCOPY (yybottom_new, *yybottom, yysize_old);
          *yytop = yybottom_new + (yysize_old - 1);
        }
      if (*yybottom != yybottom_no_free)
        YYSTACK_FREE (*yybottom);
      *yybottom = yybottom_new;
      *yycapacity = yyalloc;
    }
  return 0;
}

/* Establish the initial context for the current lookahead if no initial
   context is currently established.

   We define a context as a snapshot of the parser stacks.  We define
   the initial context for a lookahead as the context in which the
   parser initially examines that lookahead in order to select a
   syntactic action.  Thus, if the lookahead eventually proves
   syntactically unacceptable (possibly in a later context reached via a
   series of reductions), the initial context can be used to determine
   the exact set of tokens that would be syntactically acceptable in the
   lookahead's place.  Moreover, it is the context after which any
   further semantic actions would be erroneous because they would be
   determined by a syntactically unacceptable token.

   YY_LAC_ESTABLISH should be invoked when a reduction is about to be
   performed in an inconsistent state (which, for the purposes of LAC,
   includes consistent states that don't know they're consistent because
   their default reductions have been disabled).  Iff there is a
   lookahead token, it should also be invoked before reporting a syntax
   error.  This latter case is for the sake of the debugging output.

   For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
   follows.  If no initial context is currently established for the
   current lookahead, then check if that lookahead can eventually be
   shifted if syntactic actions continue from the current context.
   Report a syntax error if it cannot.  */
#define YY_LAC_ESTABLISH                                                \
do {                                                                    \
  if (!yy_lac_established)                                              \
    {                                                                   \
      YYDPRINTF ((stderr,                                               \
                  "LAC: initial context established for %s\n",          \
                  yysymbol_name (yytoken)));                            \
      yy_lac_established = 1;                                           \
      switch (yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken))    \
        {                                                               \
        case YYENOMEM:                                                  \
          YYNOMEM;                                                      \
        case 1:                                                         \
          goto yyerrlab;                                                \
        }                                                               \
    }                                                                   \
} while (0)

/* Discard any previous initial lookahead context because of Event,
   which may be a lookahead change or an invalidation of the currently
   established initial context for the current lookahead.

   The most common example of a lookahead change is a shift.  An example
   of both cases is syntax error recovery.  That is, a syntax error
   occurs when the lookahead is syntactically erroneous for the
   currently established initial context, so error recovery manipulates
   the parser stacks to try to find a new initial context in which the
   current lookahead is syntactically acceptable.  If it fails to find
   such a context, it discards the lookahead.  */
#if GRAM_DEBUG
# define YY_LAC_DISCARD(Event)                                           \
do {                                                                     \
  if (yy_lac_established)                                                \
    {                                                                    \
      YYDPRINTF ((stderr, "LAC: initial context discarded due to "       \
                  Event "\n"));                                          \
      yy_lac_established = 0;                                            \
    }                                                                    \
} while (0)
#else
# define YY_LAC_DISCARD(Event) yy_lac_established = 0
#endif

/* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
   eventually (after perhaps some reductions) be shifted, return 1 if
   not, or return YYENOMEM if memory is exhausted.  As preconditions and
   postconditions: *YYES_CAPACITY is the allocated size of the array to
   which *YYES points, and either *YYES = YYESA or *YYES points to an
   array allocated with YYSTACK_ALLOC.  yy_lac may overwrite the
   contents of either array, alter *YYES and *YYES_CAPACITY, and free
   any old *YYES other than YYESA.  */
static int
yy_lac (yy_state_t *yyesa, yy_state_t **yyes,
        YYPTRDIFF_T *yyes_capacity, yy_state_t *yyssp, yysymbol_kind_t yytoken)
{
  yy_state_t *yyes_prev = yyssp;
  yy_state_t *yyesp = yyes_prev;
  /* Reduce until we encounter a shift and thereby accept the token.  */
  YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yysymbol_name (yytoken)));
  if (yytoken == YYSYMBOL_YYUNDEF)
    {
      YYDPRINTF ((stderr, " Always Err\n"));
      return 1;
    }
  while (1)
    {
      int yyrule = yypact[+*yyesp];
      if (yypact_value_is_default (yyrule)
          || (yyrule += yytoken) < 0 || YYLAST < yyrule
          || yycheck[yyrule] != yytoken)
        {
          /* Use the default action.  */
          yyrule = yydefact[+*yyesp];
          if (yyrule == 0)
            {
              YYDPRINTF ((stderr, " Err\n"));
              return 1;
            }
        }
      else
        {
          /* Use the action from yytable.  */
          yyrule = yytable[yyrule];
          if (yytable_value_is_error (yyrule))
            {
              YYDPRINTF ((stderr, " Err\n"));
              return 1;
            }
          if (0 < yyrule)
            {
              YYDPRINTF ((stderr, " S%d\n", yyrule));
              return 0;
            }
          yyrule = -yyrule;
        }
      /* By now we know we have to simulate a reduce.  */
      YYDPRINTF ((stderr, " R%d", yyrule - 1));
      {
        /* Pop the corresponding number of values from the stack.  */
        YYPTRDIFF_T yylen = yyr2[yyrule];
        /* First pop from the LAC stack as many tokens as possible.  */
        if (yyesp != yyes_prev)
          {
            YYPTRDIFF_T yysize = yyesp - *yyes + 1;
            if (yylen < yysize)
              {
                yyesp -= yylen;
                yylen = 0;
              }
            else
              {
                yyesp = yyes_prev;
                yylen -= yysize;
              }
          }
        /* Only afterwards look at the main stack.  */
        if (yylen)
          yyesp = yyes_prev -= yylen;
      }
      /* Push the resulting state of the reduction.  */
      {
        yy_state_fast_t yystate;
        {
          const int yylhs = yyr1[yyrule] - YYNTOKENS;
          const int yyi = yypgoto[yylhs] + *yyesp;
          yystate = (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyesp
                     ? yytable[yyi]
                     : yydefgoto[yylhs]);
        }
        if (yyesp == yyes_prev)
          {
            yyesp = *yyes;
            YY_IGNORE_USELESS_CAST_BEGIN
            *yyesp = YY_CAST (yy_state_t, yystate);
            YY_IGNORE_USELESS_CAST_END
          }
        else
          {
            if (yy_lac_stack_realloc (yyes_capacity, 1,
#if GRAM_DEBUG
                                      " (", ")",
#endif
                                      yyes, yyesa, &yyesp, yyes_prev))
              {
                YYDPRINTF ((stderr, "\n"));
                return YYENOMEM;
              }
            YY_IGNORE_USELESS_CAST_BEGIN
            *++yyesp = YY_CAST (yy_state_t, yystate);
            YY_IGNORE_USELESS_CAST_END
          }
        YYDPRINTF ((stderr, " G%d", yystate));
      }
    }
}

/* Context of a parse error.  */
typedef struct
{
  yy_state_t *yyssp;
  yy_state_t *yyesa;
  yy_state_t **yyes;
  YYPTRDIFF_T *yyes_capacity;
  yysymbol_kind_t yytoken;
  YYLTYPE *yylloc;
} yypcontext_t;

/* Put in YYARG at most YYARGN of the expected tokens given the
   current YYCTX, and return the number of tokens stored in YYARG.  If
   YYARG is null, return the number of expected tokens (guaranteed to
   be less than YYNTOKENS).  Return YYENOMEM on memory exhaustion.
   Return 0 if there are more than YYARGN expected tokens, yet fill
   YYARG up to YYARGN. */
static int
yypcontext_expected_tokens (const yypcontext_t *yyctx,
                            yysymbol_kind_t yyarg[], int yyargn)
{
  /* Actual size of YYARG. */
  int yycount = 0;

  int yyx;
  for (yyx = 0; yyx < YYNTOKENS; ++yyx)
    {
      yysymbol_kind_t yysym = YY_CAST (yysymbol_kind_t, yyx);
      if (yysym != YYSYMBOL_YYerror && yysym != YYSYMBOL_YYUNDEF)
        switch (yy_lac (yyctx->yyesa, yyctx->yyes, yyctx->yyes_capacity, yyctx->yyssp, yysym))
          {
          case YYENOMEM:
            return YYENOMEM;
          case 1:
            continue;
          default:
            if (!yyarg)
              ++yycount;
            else if (yycount == yyargn)
              return 0;
            else
              yyarg[yycount++] = yysym;
          }
    }
  if (yyarg && yycount == 0 && 0 < yyargn)
    yyarg[0] = YYSYMBOL_YYEMPTY;
  return yycount;
}




/* The kind of the lookahead of this context.  */
static yysymbol_kind_t
yypcontext_token (const yypcontext_t *yyctx) YY_ATTRIBUTE_UNUSED;

static yysymbol_kind_t
yypcontext_token (const yypcontext_t *yyctx)
{
  return yyctx->yytoken;
}

/* The location of the lookahead of this context.  */
static YYLTYPE *
yypcontext_location (const yypcontext_t *yyctx) YY_ATTRIBUTE_UNUSED;

static YYLTYPE *
yypcontext_location (const yypcontext_t *yyctx)
{
  return yyctx->yylloc;
}

/* User defined function to report a syntax error.  */
static int
yyreport_syntax_error (const yypcontext_t *yyctx);

/*-----------------------------------------------.
| Release the memory associated to this symbol.  |
`-----------------------------------------------*/

static void
yydestruct (const char *yymsg,
            yysymbol_kind_t yykind, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
{
  YY_USE (yyvaluep);
  YY_USE (yylocationp);
  if (!yymsg)
    yymsg = "Deleting";
  YY_SYMBOL_PRINT (yymsg, yykind, yyvaluep, yylocationp);

  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  switch (yykind)
    {
    case YYSYMBOL_generic_symlist: /* generic_symlist  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).generic_symlist)); }
#line 1819 "src/parse-gram.c"
        break;

    case YYSYMBOL_generic_symlist_item: /* generic_symlist_item  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).generic_symlist_item)); }
#line 1825 "src/parse-gram.c"
        break;

    case YYSYMBOL_nterm_decls: /* nterm_decls  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).nterm_decls)); }
#line 1831 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decls: /* token_decls  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).token_decls)); }
#line 1837 "src/parse-gram.c"
        break;

    case YYSYMBOL_82_token_decl_1: /* token_decl.1  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).yykind_82)); }
#line 1843 "src/parse-gram.c"
        break;

    case YYSYMBOL_token_decls_for_prec: /* token_decls_for_prec  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).token_decls_for_prec)); }
#line 1849 "src/parse-gram.c"
        break;

    case YYSYMBOL_87_token_decl_for_prec_1: /* token_decl_for_prec.1  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).yykind_87)); }
#line 1855 "src/parse-gram.c"
        break;

    case YYSYMBOL_symbol_decls: /* symbol_decls  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).symbol_decls)); }
#line 1861 "src/parse-gram.c"
        break;

    case YYSYMBOL_90_symbols_1: /* symbols.1  */
#line 259 "src/parse-gram.y"
            { symbol_list_free (((*yyvaluep).yykind_90)); }
#line 1867 "src/parse-gram.c"
        break;

      default:
        break;
    }
  YY_IGNORE_MAYBE_UNINITIALIZED_END
}






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

int
yyparse (void)
{
/* Lookahead token kind.  */
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 GRAM_LTYPE_IS_TRIVIAL && GRAM_LTYPE_IS_TRIVIAL
  = { 1, 1, 1, 1 }
# endif
;
YYLTYPE yylloc = yyloc_default;

    /* Number of syntax errors so far.  */
    int yynerrs = 0;

    yy_state_fast_t yystate = 0;
    /* Number of tokens to shift before error messages enabled.  */
    int yyerrstatus = 0;

    /* Refer to the stacks through separate pointers, to allow yyoverflow
       to reallocate them elsewhere.  */

    /* Their size.  */
    YYPTRDIFF_T yystacksize = YYINITDEPTH;

    /* The state stack: array, bottom, top.  */
    yy_state_t yyssa[YYINITDEPTH];
    yy_state_t *yyss = yyssa;
    yy_state_t *yyssp = yyss;

    /* The semantic value stack: array, bottom, top.  */
    YYSTYPE yyvsa[YYINITDEPTH];
    YYSTYPE *yyvs = yyvsa;
    YYSTYPE *yyvsp = yyvs;

    /* The location stack: array, bottom, top.  */
    YYLTYPE yylsa[YYINITDEPTH];
    YYLTYPE *yyls = yylsa;
    YYLTYPE *yylsp = yyls;

    yy_state_t yyesa[20];
    yy_state_t *yyes = yyesa;
    YYPTRDIFF_T yyes_capacity = 20 < YYMAXDEPTH ? 20 : YYMAXDEPTH;

  /* Whether LAC context is established.  A Boolean.  */
  int yy_lac_established = 0;
  int yyn;
  /* The return value of yyparse.  */
  int yyresult;
  /* Lookahead symbol kind.  */
  yysymbol_kind_t yytoken = YYSYMBOL_YYEMPTY;
  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE yyval;
  YYLTYPE yyloc;

  /* The locations where the error started and ended.  */
  YYLTYPE yyerror_range[3];



#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;

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

  yychar = GRAM_EMPTY; /* Cause a token to be read.  */


/* User initialization code.  */
#line 160 "src/parse-gram.y"
{
  /* Bison's grammar can initial empty locations, hence a default
     location is needed. */
  boundary_set (&yylloc.start, grammar_file, 1, 1, 1);
  boundary_set (&yylloc.end, grammar_file, 1, 1, 1);
}

#line 1975 "src/parse-gram.c"

  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 -- set current state (the top of the stack) to yystate.  |
`--------------------------------------------------------------------*/
yysetstate:
  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
  YY_ASSERT (0 <= yystate && yystate < YYNSTATES);
  YY_IGNORE_USELESS_CAST_BEGIN
  *yyssp = YY_CAST (yy_state_t, yystate);
  YY_IGNORE_USELESS_CAST_END
  YY_STACK_PRINT (yyss, yyssp);

  if (yyss + yystacksize - 1 <= yyssp)
#if !defined yyoverflow && !defined YYSTACK_RELOCATE
    YYNOMEM;
#else
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYPTRDIFF_T yysize = yyssp - yyss + 1;

# if defined 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.  */
        yy_state_t *yyss1 = yyss;
        YYSTYPE *yyvs1 = yyvs;
        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 * YYSIZEOF (*yyssp),
                    &yyvs1, yysize * YYSIZEOF (*yyvsp),
                    &yyls1, yysize * YYSIZEOF (*yylsp),
                    &yystacksize);
        yyss = yyss1;
        yyvs = yyvs1;
        yyls = yyls1;
      }
# else /* defined YYSTACK_RELOCATE */
      /* Extend the stack our own way.  */
      if (YYMAXDEPTH <= yystacksize)
        YYNOMEM;
      yystacksize *= 2;
      if (YYMAXDEPTH < yystacksize)
        yystacksize = YYMAXDEPTH;

      {
        yy_state_t *yyss1 = yyss;
        union yyalloc *yyptr =
          YY_CAST (union yyalloc *,
                   YYSTACK_ALLOC (YY_CAST (YYSIZE_T, YYSTACK_BYTES (yystacksize))));
        if (! yyptr)
          YYNOMEM;
        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

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

      YY_IGNORE_USELESS_CAST_BEGIN
      YYDPRINTF ((stderr, "Stack size increased to %ld\n",
                  YY_CAST (long, yystacksize)));
      YY_IGNORE_USELESS_CAST_END

      if (yyss + yystacksize - 1 <= yyssp)
        YYABORT;
    }
#endif /* !defined yyoverflow && !defined YYSTACK_RELOCATE */


  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 empty, or end-of-input, or a valid lookahead.  */
  if (yychar == GRAM_EMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token\n"));
      yychar = yylex (&yylval, &yylloc);
    }

  if (yychar <= GRAM_EOF)
    {
      yychar = GRAM_EOF;
      yytoken = YYSYMBOL_YYEOF;
      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else if (yychar == GRAM_error)
    {
      /* The scanner already issued an error message, process directly
         to error recovery.  But do not keep the error token as
         lookahead, it is too special and may lead us to an endless
         loop in error recovery. */
      yychar = GRAM_UNDEF;
      yytoken = YYSYMBOL_YYerror;
      yyerror_range[1] = yylloc;
      goto yyerrlab1;
    }
  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)
    {
      YY_LAC_ESTABLISH;
      goto yydefault;
    }
  yyn = yytable[yyn];
  if (yyn <= 0)
    {
      if (yytable_value_is_error (yyn))
        goto yyerrlab;
      yyn = -yyn;
      YY_LAC_ESTABLISH;
      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);
  yystate = yyn;
  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  *++yyvsp = yylval;
  YY_IGNORE_MAYBE_UNINITIALIZED_END
  *++yylsp = yylloc;

  /* Discard the shifted token.  */
  yychar = GRAM_EMPTY;
  YY_LAC_DISCARD ("shift");
  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);
  yyerror_range[1] = yyloc;
  YY_REDUCE_PRINT (yyn);
  {
    int yychar_backup = yychar;
    switch (yyn)
      {
  case 6: /* prologue_declaration: "%{...%}"  */
#line 326 "src/parse-gram.y"
    {
      muscle_code_grow (union_seen ? "post_prologue" : "pre_prologue",
                        translate_code ((yyvsp[0].PROLOGUE), (yylsp[0]), true), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2199 "src/parse-gram.c"
    break;

  case 7: /* prologue_declaration: "%<flag>"  */
#line 332 "src/parse-gram.y"
    {
      muscle_percent_define_ensure ((yyvsp[0].PERCENT_FLAG), (yylsp[0]), true);
    }
#line 2207 "src/parse-gram.c"
    break;

  case 8: /* prologue_declaration: "%define" variable value  */
#line 336 "src/parse-gram.y"
    {
      muscle_percent_define_insert ((yyvsp[-1].variable), (yyloc), (yyvsp[0].value).kind, (yyvsp[0].value).chars,
                                    MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
    }
#line 2216 "src/parse-gram.c"
    break;

  case 9: /* prologue_declaration: "%header" string.opt  */
#line 340 "src/parse-gram.y"
                                   { handle_header ((yyvsp[0].yykind_75)); }
#line 2222 "src/parse-gram.c"
    break;

  case 10: /* prologue_declaration: "%error-verbose"  */
#line 341 "src/parse-gram.y"
                                   { handle_error_verbose (&(yyloc), (yyvsp[0].PERCENT_ERROR_VERBOSE)); }
#line 2228 "src/parse-gram.c"
    break;

  case 11: /* prologue_declaration: "%expect" "integer literal"  */
#line 342 "src/parse-gram.y"
                                   { expected_sr_conflicts = (yyvsp[0].INT_LITERAL); }
#line 2234 "src/parse-gram.c"
    break;

  case 12: /* prologue_declaration: "%expect-rr" "integer literal"  */
#line 343 "src/parse-gram.y"
                                   { expected_rr_conflicts = (yyvsp[0].INT_LITERAL); }
#line 2240 "src/parse-gram.c"
    break;

  case 13: /* prologue_declaration: "%file-prefix" "string"  */
#line 344 "src/parse-gram.y"
                                   { handle_file_prefix (&(yyloc), &(yylsp[-1]), (yyvsp[-1].PERCENT_FILE_PREFIX), (yyvsp[0].STRING)); }
#line 2246 "src/parse-gram.c"
    break;

  case 14: /* prologue_declaration: "%glr-parser"  */
#line 346 "src/parse-gram.y"
    {
      nondeterministic_parser = true;
      glr_parser = true;
    }
#line 2255 "src/parse-gram.c"
    break;

  case 15: /* prologue_declaration: "%initial-action" "{...}"  */
#line 351 "src/parse-gram.y"
    {
      muscle_code_grow ("initial_action", translate_code ((yyvsp[0].BRACED_CODE), (yylsp[0]), false), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2264 "src/parse-gram.c"
    break;

  case 16: /* prologue_declaration: "%language" "string"  */
#line 355 "src/parse-gram.y"
                                { handle_language (&(yylsp[-1]), (yyvsp[0].STRING)); }
#line 2270 "src/parse-gram.c"
    break;

  case 17: /* prologue_declaration: "%name-prefix" "string"  */
#line 356 "src/parse-gram.y"
                                { handle_name_prefix (&(yyloc), (yyvsp[-1].PERCENT_NAME_PREFIX), (yyvsp[0].STRING)); }
#line 2276 "src/parse-gram.c"
    break;

  case 18: /* prologue_declaration: "%no-lines"  */
#line 357 "src/parse-gram.y"
                                { no_lines_flag = true; }
#line 2282 "src/parse-gram.c"
    break;

  case 19: /* prologue_declaration: "%nondeterministic-parser"  */
#line 358 "src/parse-gram.y"
                                { nondeterministic_parser = true; }
#line 2288 "src/parse-gram.c"
    break;

  case 20: /* prologue_declaration: "%output" "string"  */
#line 359 "src/parse-gram.y"
                                { spec_outfile = unquote ((yyvsp[0].STRING)); gram_scanner_last_string_free (); }
#line 2294 "src/parse-gram.c"
    break;

  case 21: /* $@1: %empty  */
#line 360 "src/parse-gram.y"
           { current_param = (yyvsp[0].PERCENT_PARAM); }
#line 2300 "src/parse-gram.c"
    break;

  case 22: /* prologue_declaration: "%param" $@1 params  */
#line 360 "src/parse-gram.y"
                                          { current_param = param_none; }
#line 2306 "src/parse-gram.c"
    break;

  case 23: /* prologue_declaration: "%pure-parser"  */
#line 361 "src/parse-gram.y"
                                { handle_pure_parser (&(yyloc), (yyvsp[0].PERCENT_PURE_PARSER)); }
#line 2312 "src/parse-gram.c"
    break;

  case 24: /* prologue_declaration: "%require" "string"  */
#line 362 "src/parse-gram.y"
                                { handle_require (&(yylsp[0]), (yyvsp[0].STRING)); }
#line 2318 "src/parse-gram.c"
    break;

  case 25: /* prologue_declaration: "%skeleton" "string"  */
#line 363 "src/parse-gram.y"
                                { handle_skeleton (&(yylsp[0]), (yyvsp[0].STRING)); }
#line 2324 "src/parse-gram.c"
    break;

  case 26: /* prologue_declaration: "%token-table"  */
#line 364 "src/parse-gram.y"
                                { token_table_flag = true; }
#line 2330 "src/parse-gram.c"
    break;

  case 27: /* prologue_declaration: "%verbose"  */
#line 365 "src/parse-gram.y"
                                { report_flag |= report_states; }
#line 2336 "src/parse-gram.c"
    break;

  case 28: /* prologue_declaration: "%yacc"  */
#line 366 "src/parse-gram.y"
                                { handle_yacc (&(yyloc)); }
#line 2342 "src/parse-gram.c"
    break;

  case 29: /* prologue_declaration: error ";"  */
#line 367 "src/parse-gram.y"
                                { current_class = unknown_sym; yyerrok; }
#line 2348 "src/parse-gram.c"
    break;

  case 31: /* params: params "{...}"  */
#line 372 "src/parse-gram.y"
                   { add_param (current_param, (yyvsp[0].BRACED_CODE), (yylsp[0])); }
#line 2354 "src/parse-gram.c"
    break;

  case 32: /* params: "{...}"  */
#line 373 "src/parse-gram.y"
                   { add_param (current_param, (yyvsp[0].BRACED_CODE), (yylsp[0])); }
#line 2360 "src/parse-gram.c"
    break;

  case 34: /* grammar_declaration: "%start" symbols.1  */
#line 384 "src/parse-gram.y"
    {
      grammar_start_symbols_add ((yyvsp[0].yykind_90));
    }
#line 2368 "src/parse-gram.c"
    break;

  case 35: /* grammar_declaration: code_props_type "{...}" generic_symlist  */
#line 388 "src/parse-gram.y"
    {
      code_props code;
      code_props_symbol_action_init (&code, (yyvsp[-1].BRACED_CODE), (yylsp[-1]));
      code_props_translate_code (&code);
      {
        for (symbol_list *list = (yyvsp[0].generic_symlist); list; list = list->next)
          symbol_list_code_props_set (list, (yyvsp[-2].code_props_type), &code);
        symbol_list_free ((yyvsp[0].generic_symlist));
      }
    }
#line 2383 "src/parse-gram.c"
    break;

  case 36: /* grammar_declaration: "%default-prec"  */
#line 399 "src/parse-gram.y"
    {
      default_prec = true;
    }
#line 2391 "src/parse-gram.c"
    break;

  case 37: /* grammar_declaration: "%no-default-prec"  */
#line 403 "src/parse-gram.y"
    {
      default_prec = false;
    }
#line 2399 "src/parse-gram.c"
    break;

  case 38: /* grammar_declaration: "%code" "{...}"  */
#line 407 "src/parse-gram.y"
    {
      /* Do not invoke muscle_percent_code_grow here since it invokes
         muscle_user_name_list_grow.  */
      muscle_code_grow ("percent_code()",
                        translate_code_braceless ((yyvsp[0].BRACED_CODE), (yylsp[0])), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2411 "src/parse-gram.c"
    break;

  case 39: /* grammar_declaration: "%code" "identifier" "{...}"  */
#line 415 "src/parse-gram.y"
    {
      muscle_percent_code_grow ((yyvsp[-1].ID), (yylsp[-1]), translate_code_braceless ((yyvsp[0].BRACED_CODE), (yylsp[0])), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2420 "src/parse-gram.c"
    break;

  case 40: /* code_props_type: "%destructor"  */
#line 424 "src/parse-gram.y"
                 { (yyval.code_props_type) = destructor; }
#line 2426 "src/parse-gram.c"
    break;

  case 41: /* code_props_type: "%printer"  */
#line 425 "src/parse-gram.y"
                 { (yyval.code_props_type) = printer; }
#line 2432 "src/parse-gram.c"
    break;

  case 42: /* union_name: %empty  */
#line 435 "src/parse-gram.y"
         {}
#line 2438 "src/parse-gram.c"
    break;

  case 43: /* union_name: "identifier"  */
#line 436 "src/parse-gram.y"
         { muscle_percent_define_insert ("api.value.union.name",
                                         (yylsp[0]), muscle_keyword, (yyvsp[0].ID),
                                         MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE); }
#line 2446 "src/parse-gram.c"
    break;

  case 44: /* grammar_declaration: "%union" union_name "{...}"  */
#line 443 "src/parse-gram.y"
    {
      union_seen = true;
      muscle_code_grow ("union_members", translate_code_braceless ((yyvsp[0].BRACED_CODE), (yylsp[0])), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2456 "src/parse-gram.c"
    break;

  case 45: /* $@2: %empty  */
#line 455 "src/parse-gram.y"
           { current_class = nterm_sym; }
#line 2462 "src/parse-gram.c"
    break;

  case 46: /* symbol_declaration: "%nterm" $@2 nterm_decls  */
#line 456 "src/parse-gram.y"
    {
      current_class = unknown_sym;
      symbol_list_free ((yyvsp[0].nterm_decls));
    }
#line 2471 "src/parse-gram.c"
    break;

  case 47: /* $@3: %empty  */
#line 460 "src/parse-gram.y"
           { current_class = token_sym; }
#line 2477 "src/parse-gram.c"
    break;

  case 48: /* symbol_declaration: "%token" $@3 token_decls  */
#line 461 "src/parse-gram.y"
    {
      current_class = unknown_sym;
      symbol_list_free ((yyvsp[0].token_decls));
    }
#line 2486 "src/parse-gram.c"
    break;

  case 49: /* $@4: %empty  */
#line 465 "src/parse-gram.y"
          { current_class = pct_type_sym; }
#line 2492 "src/parse-gram.c"
    break;

  case 50: /* symbol_declaration: "%type" $@4 symbol_decls  */
#line 466 "src/parse-gram.y"
    {
      current_class = unknown_sym;
      symbol_list_free ((yyvsp[0].symbol_decls));
    }
#line 2501 "src/parse-gram.c"
    break;

  case 51: /* symbol_declaration: precedence_declarator token_decls_for_prec  */
#line 471 "src/parse-gram.y"
    {
      ++current_prec;
      for (symbol_list *list = (yyvsp[0].token_decls_for_prec); list; list = list->next)
        symbol_precedence_set (list->content.sym, current_prec, (yyvsp[-1].precedence_declarator), (yylsp[-1]));
      symbol_list_free ((yyvsp[0].token_decls_for_prec));
    }
#line 2512 "src/parse-gram.c"
    break;

  case 52: /* precedence_declarator: "%left"  */
#line 480 "src/parse-gram.y"
                { (yyval.precedence_declarator) = left_assoc; }
#line 2518 "src/parse-gram.c"
    break;

  case 53: /* precedence_declarator: "%right"  */
#line 481 "src/parse-gram.y"
                { (yyval.precedence_declarator) = right_assoc; }
#line 2524 "src/parse-gram.c"
    break;

  case 54: /* precedence_declarator: "%nonassoc"  */
#line 482 "src/parse-gram.y"
                { (yyval.precedence_declarator) = non_assoc; }
#line 2530 "src/parse-gram.c"
    break;

  case 55: /* precedence_declarator: "%precedence"  */
#line 483 "src/parse-gram.y"
                { (yyval.precedence_declarator) = precedence_assoc; }
#line 2536 "src/parse-gram.c"
    break;

  case 56: /* string.opt: %empty  */
#line 488 "src/parse-gram.y"
          { (yyval.yykind_75) = NULL; }
#line 2542 "src/parse-gram.c"
    break;

  case 57: /* string.opt: "string"  */
#line 489 "src/parse-gram.y"
          { (yyval.yykind_75) = (yyvsp[0].STRING); }
#line 2548 "src/parse-gram.c"
    break;

  case 58: /* tag.opt: %empty  */
#line 493 "src/parse-gram.y"
         { (yyval.yykind_76) = NULL; }
#line 2554 "src/parse-gram.c"
    break;

  case 59: /* tag.opt: "<tag>"  */
#line 494 "src/parse-gram.y"
         { (yyval.yykind_76) = (yyvsp[0].TAG); }
#line 2560 "src/parse-gram.c"
    break;

  case 61: /* generic_symlist: generic_symlist generic_symlist_item  */
#line 500 "src/parse-gram.y"
                                         { (yyval.generic_symlist) = symbol_list_append ((yyvsp[-1].generic_symlist), (yyvsp[0].generic_symlist_item)); }
#line 2566 "src/parse-gram.c"
    break;

  case 62: /* generic_symlist_item: symbol  */
#line 504 "src/parse-gram.y"
            { (yyval.generic_symlist_item) = symbol_list_sym_new ((yyvsp[0].symbol), (yylsp[0])); }
#line 2572 "src/parse-gram.c"
    break;

  case 63: /* generic_symlist_item: tag  */
#line 505 "src/parse-gram.y"
            { (yyval.generic_symlist_item) = symbol_list_type_new ((yyvsp[0].tag), (yylsp[0])); }
#line 2578 "src/parse-gram.c"
    break;

  case 65: /* tag: "<*>"  */
#line 510 "src/parse-gram.y"
        { (yyval.tag) = uniqstr_new ("*"); }
#line 2584 "src/parse-gram.c"
    break;

  case 66: /* tag: "<>"  */
#line 511 "src/parse-gram.y"
        { (yyval.tag) = uniqstr_new (""); }
#line 2590 "src/parse-gram.c"
    break;

  case 68: /* token_decls: token_decl.1  */
#line 534 "src/parse-gram.y"
    {
      (yyval.token_decls) = (yyvsp[0].yykind_82);
    }
#line 2598 "src/parse-gram.c"
    break;

  case 69: /* token_decls: "<tag>" token_decl.1  */
#line 538 "src/parse-gram.y"
    {
      (yyval.token_decls) = symbol_list_type_set ((yyvsp[0].yykind_82), (yyvsp[-1].TAG));
    }
#line 2606 "src/parse-gram.c"
    break;

  case 70: /* token_decls: token_decls "<tag>" token_decl.1  */
#line 542 "src/parse-gram.y"
    {
      (yyval.token_decls) = symbol_list_append ((yyvsp[-2].token_decls), symbol_list_type_set ((yyvsp[0].yykind_82), (yyvsp[-1].TAG)));
    }
#line 2614 "src/parse-gram.c"
    break;

  case 71: /* token_decl.1: token_decl  */
#line 549 "src/parse-gram.y"
                            { (yyval.yykind_82) = symbol_list_sym_new ((yyvsp[0].token_decl), (yylsp[0])); }
#line 2620 "src/parse-gram.c"
    break;

  case 72: /* token_decl.1: token_decl.1 token_decl  */
#line 550 "src/parse-gram.y"
                            { (yyval.yykind_82) = symbol_list_append ((yyvsp[-1].yykind_82), symbol_list_sym_new ((yyvsp[0].token_decl), (yylsp[0]))); }
#line 2626 "src/parse-gram.c"
    break;

  case 73: /* token_decl: id int.opt alias  */
#line 555 "src/parse-gram.y"
    {
      (yyval.token_decl) = (yyvsp[-2].id);
      symbol_class_set ((yyvsp[-2].id), current_class, (yylsp[-2]), true);
      if (0 <= (yyvsp[-1].yykind_84))
        symbol_code_set ((yyvsp[-2].id), (yyvsp[-1].yykind_84), (yylsp[-1]));
      if ((yyvsp[0].alias))
        symbol_make_alias ((yyvsp[-2].id), (yyvsp[0].alias), (yylsp[0]));
    }
#line 2639 "src/parse-gram.c"
    break;

  case 74: /* int.opt: %empty  */
#line 567 "src/parse-gram.y"
          { (yyval.yykind_84) = -1; }
#line 2645 "src/parse-gram.c"
    break;

  case 76: /* alias: %empty  */
#line 573 "src/parse-gram.y"
                 { (yyval.alias) = NULL; }
#line 2651 "src/parse-gram.c"
    break;

  case 77: /* alias: string_as_id  */
#line 574 "src/parse-gram.y"
                 { (yyval.alias) = (yyvsp[0].string_as_id); }
#line 2657 "src/parse-gram.c"
    break;

  case 78: /* alias: "translatable string"  */
#line 576 "src/parse-gram.y"
    {
      (yyval.alias) = symbol_get ((yyvsp[0].TSTRING), (yylsp[0]));
      symbol_class_set ((yyval.alias), token_sym, (yylsp[0]), false);
      (yyval.alias)->translatable = true;
    }
#line 2667 "src/parse-gram.c"
    break;

  case 79: /* token_decls_for_prec: token_decl_for_prec.1  */
#line 594 "src/parse-gram.y"
    {
      (yyval.token_decls_for_prec) = (yyvsp[0].yykind_87);
    }
#line 2675 "src/parse-gram.c"
    break;

  case 80: /* token_decls_for_prec: "<tag>" token_decl_for_prec.1  */
#line 598 "src/parse-gram.y"
    {
      (yyval.token_decls_for_prec) = symbol_list_type_set ((yyvsp[0].yykind_87), (yyvsp[-1].TAG));
    }
#line 2683 "src/parse-gram.c"
    break;

  case 81: /* token_decls_for_prec: token_decls_for_prec "<tag>" token_decl_for_prec.1  */
#line 602 "src/parse-gram.y"
    {
      (yyval.token_decls_for_prec) = symbol_list_append ((yyvsp[-2].token_decls_for_prec), symbol_list_type_set ((yyvsp[0].yykind_87), (yyvsp[-1].TAG)));
    }
#line 2691 "src/parse-gram.c"
    break;

  case 82: /* token_decl_for_prec.1: token_decl_for_prec  */
#line 610 "src/parse-gram.y"
    { (yyval.yykind_87) = symbol_list_sym_new ((yyvsp[0].token_decl_for_prec), (yylsp[0])); }
#line 2697 "src/parse-gram.c"
    break;

  case 83: /* token_decl_for_prec.1: token_decl_for_prec.1 token_decl_for_prec  */
#line 612 "src/parse-gram.y"
    { (yyval.yykind_87) = symbol_list_append ((yyvsp[-1].yykind_87), symbol_list_sym_new ((yyvsp[0].token_decl_for_prec), (yylsp[0]))); }
#line 2703 "src/parse-gram.c"
    break;

  case 84: /* token_decl_for_prec: id int.opt  */
#line 617 "src/parse-gram.y"
    {
      (yyval.token_decl_for_prec) = (yyvsp[-1].id);
      symbol_class_set ((yyvsp[-1].id), token_sym, (yylsp[-1]), false);
      if (0 <= (yyvsp[0].yykind_84))
        symbol_code_set ((yyvsp[-1].id), (yyvsp[0].yykind_84), (yylsp[0]));
    }
#line 2714 "src/parse-gram.c"
    break;

  case 86: /* symbol_decls: symbols.1  */
#line 634 "src/parse-gram.y"
    {
      (yyval.symbol_decls) = (yyvsp[0].yykind_90);
    }
#line 2722 "src/parse-gram.c"
    break;

  case 87: /* symbol_decls: "<tag>" symbols.1  */
#line 638 "src/parse-gram.y"
    {
      (yyval.symbol_decls) = symbol_list_type_set ((yyvsp[0].yykind_90), (yyvsp[-1].TAG));
    }
#line 2730 "src/parse-gram.c"
    break;

  case 88: /* symbol_decls: symbol_decls "<tag>" symbols.1  */
#line 642 "src/parse-gram.y"
    {
      (yyval.symbol_decls) = symbol_list_append ((yyvsp[-2].symbol_decls), symbol_list_type_set ((yyvsp[0].yykind_90), (yyvsp[-1].TAG)));
    }
#line 2738 "src/parse-gram.c"
    break;

  case 89: /* symbols.1: symbol  */
#line 650 "src/parse-gram.y"
    {
      if (current_class != unknown_sym)
        symbol_class_set ((yyvsp[0].symbol), current_class, (yylsp[0]), false);
      (yyval.yykind_90) = symbol_list_sym_new ((yyvsp[0].symbol), (yylsp[0]));
    }
#line 2748 "src/parse-gram.c"
    break;

  case 90: /* symbols.1: symbols.1 symbol  */
#line 656 "src/parse-gram.y"
    {
      if (current_class != unknown_sym)
        symbol_class_set ((yyvsp[0].symbol), current_class, (yylsp[0]), false);
      (yyval.yykind_90) = symbol_list_append ((yyvsp[-1].yykind_90), symbol_list_sym_new ((yyvsp[0].symbol), (yylsp[0])));
    }
#line 2758 "src/parse-gram.c"
    break;

  case 95: /* rules_or_grammar_declaration: error ";"  */
#line 678 "src/parse-gram.y"
    {
      yyerrok;
    }
#line 2766 "src/parse-gram.c"
    break;

  case 96: /* $@5: %empty  */
#line 684 "src/parse-gram.y"
                         { current_lhs ((yyvsp[-1].id_colon), (yylsp[-1]), (yyvsp[0].yykind_97)); }
#line 2772 "src/parse-gram.c"
    break;

  case 97: /* rules: id_colon named_ref.opt $@5 ":" rhses.1  */
#line 685 "src/parse-gram.y"
    {
      /* Free the current lhs. */
      current_lhs (0, (yylsp[-4]), 0);
    }
#line 2781 "src/parse-gram.c"
    break;

  case 98: /* rhses.1: rhs  */
#line 692 "src/parse-gram.y"
                     { grammar_current_rule_end ((yylsp[0])); }
#line 2787 "src/parse-gram.c"
    break;

  case 99: /* rhses.1: rhses.1 "|" rhs  */
#line 693 "src/parse-gram.y"
                     { grammar_current_rule_end ((yylsp[0])); }
#line 2793 "src/parse-gram.c"
    break;

  case 101: /* rhs: %empty  */
#line 700 "src/parse-gram.y"
    { grammar_current_rule_begin (current_lhs_symbol, current_lhs_loc,
                                  current_lhs_named_ref); }
#line 2800 "src/parse-gram.c"
    break;

  case 102: /* rhs: rhs symbol named_ref.opt  */
#line 703 "src/parse-gram.y"
    { grammar_current_rule_symbol_append ((yyvsp[-1].symbol), (yylsp[-1]), (yyvsp[0].yykind_97)); }
#line 2806 "src/parse-gram.c"
    break;

  case 103: /* rhs: rhs tag.opt "{...}" named_ref.opt  */
#line 705 "src/parse-gram.y"
    { grammar_current_rule_action_append ((yyvsp[-1].BRACED_CODE), (yylsp[-1]), (yyvsp[0].yykind_97), (yyvsp[-2].yykind_76)); }
#line 2812 "src/parse-gram.c"
    break;

  case 104: /* rhs: rhs "%?{...}"  */
#line 707 "src/parse-gram.y"
    { grammar_current_rule_predicate_append ((yyvsp[0].BRACED_PREDICATE), (yylsp[0])); }
#line 2818 "src/parse-gram.c"
    break;

  case 105: /* rhs: rhs "%empty"  */
#line 709 "src/parse-gram.y"
    { grammar_current_rule_empty_set ((yylsp[0])); }
#line 2824 "src/parse-gram.c"
    break;

  case 106: /* rhs: rhs "%prec" symbol  */
#line 711 "src/parse-gram.y"
    { grammar_current_rule_prec_set ((yyvsp[0].symbol), (yylsp[0])); }
#line 2830 "src/parse-gram.c"
    break;

  case 107: /* rhs: rhs "%dprec" "integer literal"  */
#line 713 "src/parse-gram.y"
    { grammar_current_rule_dprec_set ((yyvsp[0].INT_LITERAL), (yylsp[0])); }
#line 2836 "src/parse-gram.c"
    break;

  case 108: /* rhs: rhs "%merge" "<tag>"  */
#line 715 "src/parse-gram.y"
    { grammar_current_rule_merge_set ((yyvsp[0].TAG), (yylsp[0])); }
#line 2842 "src/parse-gram.c"
    break;

  case 109: /* rhs: rhs "%expect" "integer literal"  */
#line 717 "src/parse-gram.y"
    { grammar_current_rule_expect_sr ((yyvsp[0].INT_LITERAL), (yylsp[0])); }
#line 2848 "src/parse-gram.c"
    break;

  case 110: /* rhs: rhs "%expect-rr" "integer literal"  */
#line 719 "src/parse-gram.y"
    { grammar_current_rule_expect_rr ((yyvsp[0].INT_LITERAL), (yylsp[0])); }
#line 2854 "src/parse-gram.c"
    break;

  case 111: /* named_ref.opt: %empty  */
#line 723 "src/parse-gram.y"
                 { (yyval.yykind_97) = NULL; }
#line 2860 "src/parse-gram.c"
    break;

  case 112: /* named_ref.opt: "[identifier]"  */
#line 724 "src/parse-gram.y"
                 { (yyval.yykind_97) = named_ref_new ((yyvsp[0].BRACKETED_ID), (yylsp[0])); }
#line 2866 "src/parse-gram.c"
    break;

  case 114: /* value: %empty  */
#line 757 "src/parse-gram.y"
          { (yyval.value).kind = muscle_keyword; (yyval.value).chars = ""; }
#line 2872 "src/parse-gram.c"
    break;

  case 115: /* value: "identifier"  */
#line 758 "src/parse-gram.y"
          { (yyval.value).kind = muscle_keyword; (yyval.value).chars = (yyvsp[0].ID); }
#line 2878 "src/parse-gram.c"
    break;

  case 116: /* value: "string"  */
#line 759 "src/parse-gram.y"
          { (yyval.value).kind = muscle_string;  (yyval.value).chars = unquote ((yyvsp[0].STRING)); gram_scanner_last_string_free ();}
#line 2884 "src/parse-gram.c"
    break;

  case 117: /* value: "{...}"  */
#line 760 "src/parse-gram.y"
          { (yyval.value).kind = muscle_code;    (yyval.value).chars = strip_braces ((yyvsp[0].BRACED_CODE)); gram_scanner_last_string_free (); }
#line 2890 "src/parse-gram.c"
    break;

  case 118: /* id: "identifier"  */
#line 773 "src/parse-gram.y"
    { (yyval.id) = symbol_from_uniqstr ((yyvsp[0].ID), (yylsp[0])); }
#line 2896 "src/parse-gram.c"
    break;

  case 119: /* id: "character literal"  */
#line 775 "src/parse-gram.y"
    {
      const char *var = "api.token.raw";
      if (current_class == nterm_sym)
        {
          complain (&(yylsp[0]), complaint,
                    _("character literals cannot be nonterminals"));
          YYERROR;
        }
      if (muscle_percent_define_ifdef (var))
        {
          complain (&(yylsp[0]), complaint,
                    _("character literals cannot be used together"
                    " with %s"), var);
          location loc = muscle_percent_define_get_loc (var);
          subcomplain (&loc, complaint, _("definition of %s"), var);
        }
      (yyval.id) = symbol_get (char_name ((yyvsp[0].CHAR_LITERAL)), (yylsp[0]));
      symbol_class_set ((yyval.id), token_sym, (yylsp[0]), false);
      symbol_code_set ((yyval.id), (yyvsp[0].CHAR_LITERAL), (yylsp[0]));
    }
#line 2921 "src/parse-gram.c"
    break;

  case 120: /* id_colon: "identifier:"  */
#line 798 "src/parse-gram.y"
           { (yyval.id_colon) = symbol_from_uniqstr ((yyvsp[0].ID_COLON), (yylsp[0])); }
#line 2927 "src/parse-gram.c"
    break;

  case 123: /* string_as_id: "string"  */
#line 810 "src/parse-gram.y"
    {
      (yyval.string_as_id) = symbol_get ((yyvsp[0].STRING), (yylsp[0]));
      symbol_class_set ((yyval.string_as_id), token_sym, (yylsp[0]), false);
    }
#line 2936 "src/parse-gram.c"
    break;

  case 125: /* epilogue.opt: "%%" "epilogue"  */
#line 819 "src/parse-gram.y"
    {
      muscle_code_grow ("epilogue", translate_code ((yyvsp[0].EPILOGUE), (yylsp[0]), true), (yylsp[0]));
      code_scanner_last_string_free ();
    }
#line 2945 "src/parse-gram.c"
    break;


#line 2949 "src/parse-gram.c"

        default: break;
      }
    if (yychar_backup != yychar)
      YY_LAC_DISCARD ("yychar change");
  }
  /* 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 ("-> $$ =", YY_CAST (yysymbol_kind_t, yyr1[yyn]), &yyval, &yyloc);

  YYPOPSTACK (yylen);
  yylen = 0;

  *++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.  */
  {
    const int yylhs = yyr1[yyn] - YYNTOKENS;
    const int yyi = yypgoto[yylhs] + *yyssp;
    yystate = (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyssp
               ? yytable[yyi]
               : yydefgoto[yylhs]);
  }

  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 == GRAM_EMPTY ? YYSYMBOL_YYEMPTY : YYTRANSLATE (yychar);
  /* If not already recovering from an error, report this error.  */
  if (!yyerrstatus)
    {
      ++yynerrs;
      {
        yypcontext_t yyctx
          = {yyssp, yyesa, &yyes, &yyes_capacity, yytoken, &yylloc};
        if (yychar != GRAM_EMPTY)
          YY_LAC_ESTABLISH;
        if (yyreport_syntax_error (&yyctx) == 2)
          YYNOMEM;
      }
    }

  yyerror_range[1] = yylloc;
  if (yyerrstatus == 3)
    {
      /* If just tried and failed to reuse lookahead token after an
         error, discard it.  */

      if (yychar <= GRAM_EOF)
        {
          /* Return failure if at end of input.  */
          if (yychar == GRAM_EOF)
            YYABORT;
        }
      else
        {
          yydestruct ("Error: discarding",
                      yytoken, &yylval, &yylloc);
          yychar = GRAM_EMPTY;
        }
    }

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


/*---------------------------------------------------.
| yyerrorlab -- error raised explicitly by YYERROR.  |
`---------------------------------------------------*/
yyerrorlab:
  /* Pacify compilers when the user code never invokes YYERROR and the
     label yyerrorlab therefore never appears in user code.  */
  if (0)
    YYERROR;
  ++yynerrs;

  /* 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.  */

  /* Pop stack until we find a state that shifts the error token.  */
  for (;;)
    {
      yyn = yypact[yystate];
      if (!yypact_value_is_default (yyn))
        {
          yyn += YYSYMBOL_YYerror;
          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYSYMBOL_YYerror)
            {
              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",
                  YY_ACCESSING_SYMBOL (yystate), yyvsp, yylsp);
      YYPOPSTACK (1);
      yystate = *yyssp;
      YY_STACK_PRINT (yyss, yyssp);
    }

  /* If the stack popping above didn't lose the initial context for the
     current lookahead token, the shift below will for sure.  */
  YY_LAC_DISCARD ("error recovery");

  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  *++yyvsp = yylval;
  YY_IGNORE_MAYBE_UNINITIALIZED_END

  yyerror_range[2] = yylloc;
  ++yylsp;
  YYLLOC_DEFAULT (*yylsp, yyerror_range, 2);

  /* Shift the error token.  */
  YY_SYMBOL_PRINT ("Shifting", YY_ACCESSING_SYMBOL (yyn), yyvsp, yylsp);

  yystate = yyn;
  goto yynewstate;


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


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


/*-----------------------------------------------------------.
| yyexhaustedlab -- YYNOMEM (memory exhaustion) comes here.  |
`-----------------------------------------------------------*/
yyexhaustedlab:
  yyerror (&yylloc, YY_("memory exhausted"));
  yyresult = 2;
  goto yyreturnlab;


/*----------------------------------------------------------.
| yyreturnlab -- parsing is finished, clean up and return.  |
`----------------------------------------------------------*/
yyreturnlab:
  if (yychar != GRAM_EMPTY)
    {
      /* 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);
    }
  /* 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",
                  YY_ACCESSING_SYMBOL (+*yyssp), yyvsp, yylsp);
      YYPOPSTACK (1);
    }
#ifndef yyoverflow
  if (yyss != yyssa)
    YYSTACK_FREE (yyss);
#endif
  if (yyes != yyesa)
    YYSTACK_FREE (yyes);

  return yyresult;
}

#line 825 "src/parse-gram.y"


int
yyreport_syntax_error (const yypcontext_t *ctx)
{
  int res = 0;
  /* Arguments of format: reported tokens (one for the "unexpected",
     one per "expected"). */
  enum { ARGS_MAX = 5 };
  const char *argv[ARGS_MAX];
  int argc = 0;
  yysymbol_kind_t unexpected = yypcontext_token (ctx);
  if (unexpected != YYSYMBOL_YYEMPTY)
    {
      argv[argc++] = yysymbol_name (unexpected);
      yysymbol_kind_t expected[ARGS_MAX - 1];
      int nexpected = yypcontext_expected_tokens (ctx, expected, ARGS_MAX - 1);
      if (nexpected < 0)
        res = nexpected;
      else
        for (int i = 0; i < nexpected; ++i)
          argv[argc++] = yysymbol_name (expected[i]);
    }
  syntax_error (*yypcontext_location (ctx), argc, argv);
  return res;
}


/* Return the location of the left-hand side of a rule whose
   right-hand side is RHS[1] ... RHS[N].  Ignore empty nonterminals in
   the right-hand side, and return an empty location equal to the end
   boundary of RHS[0] if the right-hand side is empty.  */

static YYLTYPE
lloc_default (YYLTYPE const *rhs, int n)
{
  YYLTYPE loc;

  /* SGI MIPSpro 7.4.1m miscompiles "loc.start = loc.end = rhs[n].end;".
     The bug is fixed in 7.4.2m, but play it safe for now.  */
  loc.start = rhs[n].end;
  loc.end = rhs[n].end;

  /* Ignore empty nonterminals the start of the right-hand side.
     Do not bother to ignore them at the end of the right-hand side,
     since empty nonterminals have the same end as their predecessors.  */
  for (int i = 1; i <= n; i++)
    if (! equal_boundaries (rhs[i].start, rhs[i].end))
      {
        loc.start = rhs[i].start;
        break;
      }

  return loc;
}

static
char *strip_braces (char *code)
{
  code[strlen (code) - 1] = 0;
  return code + 1;
}

static
char const *
translate_code (char *code, location loc, bool plain)
{
  code_props plain_code;
  if (plain)
    code_props_plain_init (&plain_code, code, loc);
  else
    code_props_symbol_action_init (&plain_code, code, loc);
  code_props_translate_code (&plain_code);
  gram_scanner_last_string_free ();
  return plain_code.code;
}

static
char const *
translate_code_braceless (char *code, location loc)
{
  return translate_code (strip_braces (code), loc, true);
}

static void
add_param (param_type type, char *decl, location loc)
{
  static char const alphanum[26 + 26 + 1 + 10 + 1] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "_"
    "0123456789";

  char const *name_start = NULL;
  {
    char *p;
    /* Stop on last actual character.  */
    for (p = decl; p[1]; p++)
      if ((p == decl
           || ! memchr (alphanum, p[-1], sizeof alphanum - 1))
          && memchr (alphanum, p[0], sizeof alphanum - 10 - 1))
        name_start = p;

    /* Strip the surrounding '{' and '}', and any blanks just inside
       the braces.  */
    --p;
    while (c_isspace ((unsigned char) *p))
      --p;
    p[1] = '\0';
    ++decl;
    while (c_isspace ((unsigned char) *decl))
      ++decl;
  }

  if (! name_start)
    complain (&loc, complaint, _("missing identifier in parameter declaration"));
  else
    {
      char *name = xmemdup0 (name_start, strspn (name_start, alphanum));
      if (type & param_lex)
        muscle_pair_list_grow ("lex_param", decl, name);
      if (type & param_parse)
        muscle_pair_list_grow ("parse_param", decl, name);
      free (name);
    }

  gram_scanner_last_string_free ();
}


static void
handle_header (char const *value)
{
  header_flag = true;
  if (value)
    {
      char *file = unquote (value);
      spec_header_file = xstrdup (file);
      gram_scanner_last_string_free ();
      unquote_free (file);
    }
}


static void
handle_error_verbose (location const *loc, char const *directive)
{
  bison_directive (loc, directive);
  muscle_percent_define_insert (directive, *loc, muscle_keyword, "",
                                MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
}


static void
handle_file_prefix (location const *loc,
                    location const *dir_loc,
                    char const *directive, char const *value_quoted)
{
  char *value = unquote (value_quoted);
  bison_directive (loc, directive);
  bool warned = false;

  if (location_empty (spec_file_prefix_loc))
    {
      spec_file_prefix_loc = *loc;
      spec_file_prefix = value;
    }
  else
    {
      duplicate_directive (directive, spec_file_prefix_loc, *loc);
      warned = true;
    }

  if (!warned
      && STRNEQ (directive, "%file-prefix"))
    deprecated_directive (dir_loc, directive, "%file-prefix");
}

static void
handle_language (location const *loc, char const *lang)
{
  language_argmatch (unquote (lang), grammar_prio, *loc);
}


static void
handle_name_prefix (location const *loc,
                    char const *directive, char const *value_quoted)
{
  char *value = unquote (value_quoted);
  bison_directive (loc, directive);

  char buf1[1024];
  size_t len1 = sizeof (buf1);
  char *old = asnprintf (buf1, &len1, "%s\"%s\"", directive, value);
  if (!old)
    xalloc_die ();

  if (location_empty (spec_name_prefix_loc))
    {
      spec_name_prefix = value;
      spec_name_prefix_loc = *loc;

      char buf2[1024];
      size_t len2 = sizeof (buf2);
      char *new = asnprintf (buf2, &len2, "%%define api.prefix {%s}", value);
      if (!new)
        xalloc_die ();
      deprecated_directive (loc, old, new);
      if (new != buf2)
        free (new);
    }
  else
    duplicate_directive (old, spec_file_prefix_loc, *loc);

  if (old != buf1)
    free (old);
}


static void
handle_pure_parser (location const *loc, char const *directive)
{
  bison_directive (loc, directive);
  deprecated_directive (loc, directive, "%define api.pure");
  muscle_percent_define_insert ("api.pure", *loc, muscle_keyword, "",
                                MUSCLE_PERCENT_DEFINE_GRAMMAR_FILE);
}


static void
handle_require (location const *loc, char const *version_quoted)
{
  char *version = unquote (version_quoted);
  required_version = strversion_to_int (version);
  if (required_version == -1)
    {
      complain (loc, complaint, _("invalid version requirement: %s"),
                version);
      required_version = 0;
    }
  else
    {
      const char* package_version =
        0 < strverscmp (api_version, PACKAGE_VERSION)
        ? api_version : PACKAGE_VERSION;
      if (0 < strverscmp (version, package_version))
        {
          complain (loc, complaint, _("require bison %s, but have %s"),
                    version, package_version);
          exit (EX_MISMATCH);
        }
    }
  unquote_free (version);
  gram_scanner_last_string_free ();
}

static void
handle_skeleton (location const *loc, char const *skel_quoted)
{
  char *skel = unquote (skel_quoted);
  char const *skeleton_user = skel;
  if (strchr (skeleton_user, '/'))
    {
      size_t dir_length = strlen (grammar_file);
      while (dir_length && grammar_file[dir_length - 1] != '/')
        --dir_length;
      while (dir_length && grammar_file[dir_length - 1] == '/')
        --dir_length;
      char *skeleton_build =
        xmalloc (dir_length + 1 + strlen (skeleton_user) + 1);
      if (dir_length > 0)
        {
          memcpy (skeleton_build, grammar_file, dir_length);
          skeleton_build[dir_length++] = '/';
        }
      strcpy (skeleton_build + dir_length, skeleton_user);
      skeleton_user = uniqstr_new (skeleton_build);
      free (skeleton_build);
    }
  skeleton_arg (skeleton_user, grammar_prio, *loc);
}


static void
handle_yacc (location const *loc)
{
  const char *directive = "%yacc";
  bison_directive (loc, directive);
  if (location_empty (yacc_loc))
    set_yacc (*loc);
  else
    duplicate_directive (directive, yacc_loc, *loc);
}


static void
gram_error (location const *loc, char const *msg)
{
  complain (loc, complaint, "%s", msg);
}

static char const *
char_name (char c)
{
  if (c == '\'')
    return "'\\''";
  else
    {
      char buf[4];
      buf[0] = '\''; buf[1] = c; buf[2] = '\''; buf[3] = '\0';
      return quotearg_style (escape_quoting_style, buf);
    }
}

static void
current_lhs (symbol *sym, location loc, named_ref *ref)
{
  current_lhs_symbol = sym;
  current_lhs_loc = loc;
  if (sym)
    symbol_location_as_lhs_set (sym, loc);
  /* In order to simplify memory management, named references for lhs
     are always assigned by deep copy into the current symbol_list
     node.  This is because a single named-ref in the grammar may
     result in several uses when the user factors lhs between several
     rules using "|".  Therefore free the parser's original copy.  */
  free (current_lhs_named_ref);
  current_lhs_named_ref = ref;
}

static void tron (FILE *yyo)
{
  begin_use_class ("value", yyo);
}

static void troff (FILE *yyo)
{
  end_use_class ("value", yyo);
}


/*----------.
| Unquote.  |
`----------*/

struct obstack obstack_for_unquote;

void
parser_init (void)
{
  obstack_init (&obstack_for_unquote);
}

void
parser_free (void)
{
  obstack_free (&obstack_for_unquote, 0);
}

static void
unquote_free (char *last_string)
{
  obstack_free (&obstack_for_unquote, last_string);
}

static char *
unquote (const char *cp)
{
#define GROW(Char)                              \
  obstack_1grow (&obstack_for_unquote, Char);
  for (++cp; *cp && *cp != '"'; ++cp)
    switch (*cp)
      {
      case '"':
        break;
      case '\\':
        ++cp;
        switch (*cp)
          {
          case '0': case '1': case '2': case '3': case '4':
          case '5': case '6': case '7': case '8': case '9':
            {
              int c = cp[0] - '0';
              if (c_isdigit (cp[1]))
                {
                  ++cp;
                  c = c * 8 + cp[0] - '0';
                }
              if (c_isdigit (cp[1]))
                {
                  ++cp;
                  c = c * 8 + cp[0] - '0';
                }
              GROW (c);
            }
            break;

          case 'a': GROW ('\a'); break;
          case 'b': GROW ('\b'); break;
          case 'f': GROW ('\f'); break;
          case 'n': GROW ('\n'); break;
          case 'r': GROW ('\r'); break;
          case 't': GROW ('\t'); break;
          case 'v': GROW ('\v'); break;

          case 'x':
            {
              int c = 0;
              while (c_isxdigit (cp[1]))
                {
                  ++cp;
                  c = (c * 16 + (c_isdigit (cp[0]) ? cp[0] - '0'
                                 : c_isupper (cp[0]) ? cp[0] - 'A'
                                 : cp[0] - '0'));
                }
              GROW (c);
              break;
            }
          }
        break;

      default:
        GROW (*cp);
        break;
      }
  assert (*cp == '"');
  ++cp;
  assert (*cp == '\0');
#undef GROW
  return obstack_finish0 (&obstack_for_unquote);
}
