Add Makevars.template, stamp-po.

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index cb690bb72888301f88a585d52e628e1f98492ace..6ef0775c43d6604ee08a0cc1368140c6733928ec 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -1,8 +1,7 @@
 m4_divert(-1)                                                       -*- C -*-
 m4_divert(-1)                                                       -*- C -*-

-m4_include([c.m4])

 
 # Yacc compatible skeleton for Bison
 
 # Yacc compatible skeleton for Bison

-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002
+# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003

 # Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify


@@ -20,6 +19,76 @@ m4_include([c.m4])
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307  USA
 
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307  USA
 

+
+
+## ---------------- ##
+## Default values.  ##
+## ---------------- ##
+
+# Stack parameters.
+m4_define_default([b4_stack_depth_max], [10000])
+m4_define_default([b4_stack_depth_init],  [200])
+
+
+## ------------------------ ##
+## Pure/impure interfaces.  ##
+## ------------------------ ##
+
+
+# b4_pure_if(IF-TRUE, IF-FALSE)
+# -----------------------------
+# Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
+m4_define([b4_Pure_if],
+[b4_pure_if([m4_ifset([b4_parse_param],
+                      [$1], [$2])],
+            [$2])])
+
+
+# b4_yyerror_args
+# ---------------
+# Arguments passed to yyerror: user args plus yylloc.
+m4_define([b4_yyerror_args],
+[b4_Pure_if([b4_location_if([&yylloc, ])])dnl
+m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
+
+
+# b4_lex_param
+# ------------
+# Accumulate in b4_lex_param all the yylex arguments.
+# b4_lex_param arrives quoted twice, but we want to keep only one level.
+m4_define([b4_lex_param],
+m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
+b4_location_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
+m4_ifdef([b4_lex_param], b4_lex_param)))
+
+
+
+## ------------ ##
+## Data Types.  ##
+## ------------ ##
+
+# b4_int_type(MIN, MAX)
+# ---------------------
+# Return the smallest int type able to handle numbers ranging from
+# MIN to MAX (included).  We overwrite the version from c.m4 which relies
+# on "signed char" which is not portable to old K&R compilers.
+m4_define([b4_int_type],
+[m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
+       b4_ints_in($@,   [-128],   [127]), [1], [yysigned_char],
+
+       b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
+       b4_ints_in($@, [-32768], [32767]), [1], [short],
+
+       m4_eval([0 <= $1]),                [1], [unsigned int],
+
+                                              [int])])
+
+
+## ----------------- ##
+## Semantic Values.  ##
+## ----------------- ##
+
+

 # b4_lhs_value([TYPE])
 # --------------------
 # Expansion of $<TYPE>$.
 # b4_lhs_value([TYPE])
 # --------------------
 # Expansion of $<TYPE>$.


@@ -32,7 +101,7 @@ m4_define([b4_lhs_value],
 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
 # symbols on RHS.
 m4_define([b4_rhs_value],
 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
 # symbols on RHS.
 m4_define([b4_rhs_value],

-[yyvsp@<:@m4_eval([$2 - $1])@:>@m4_ifval([$3], [.$3])])
+[yyvsp@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3])])

 
 
 
 
 
 


@@ -40,15 +109,6 @@ m4_define([b4_rhs_value],
 ## Locations.  ##
 ## ----------- ##
 
 ## Locations.  ##
 ## ----------- ##
 

-# b4_location_if(IF-TRUE, IF-FALSE)
-# ---------------------------------
-# Expand IF-TRUE, if locations are used, IF-FALSE otherwise.
-m4_define([b4_location_if],
-[m4_if(b4_locations_flag, [1],
-       [$1],
-       [$2])])
-
-

 # b4_lhs_location()
 # -----------------
 # Expansion of @$.
 # b4_lhs_location()
 # -----------------
 # Expansion of @$.


@@ -61,45 +121,7 @@ m4_define([b4_lhs_location],
 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
 # on RHS.
 m4_define([b4_rhs_location],
 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
 # on RHS.
 m4_define([b4_rhs_location],

-[yylsp@<:@m4_eval([$2 - $1])@:>@])
-
-
-
-## -------------- ##
-## %pure-parser.  ##
-## -------------- ##
-
-# b4_pure_if(IF-TRUE, IF-FALSE)
-# -----------------------------
-# Expand IF-TRUE, if %pure-parser, IF-FALSE otherwise.
-m4_define([b4_pure_if],
-[m4_if(b4_pure, [1],
-       [$1],
-       [$2])])
-
-
-## ------------------- ##
-## Output file names.  ##
-## ------------------- ##
-
-m4_define_default([b4_input_suffix], [.y])
-
-m4_define_default([b4_output_parser_suffix],
-[m4_translit(b4_input_suffix, [yY], [cC])])
-
-m4_define_default([b4_output_parser_name],
-[b4_output_prefix[]b4_output_infix[]b4_output_parser_suffix[]])
-
-
-m4_define_default([b4_output_header_suffix],
-[m4_translit(b4_input_suffix, [yY], [hH])])
-
-m4_define_default([b4_output_header_name],
-[b4_output_prefix[]b4_output_infix[]b4_output_header_suffix[]])
-
-m4_define_default([b4_header_guard],
-                  [m4_bpatsubst(m4_toupper([BISON_]b4_output_header_name),
-                                [[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]], [_])])
+[yylsp@{m4_eval([$2 - $1])@}])

 
 
 
 
 
 


@@ -107,28 +129,12 @@ m4_define_default([b4_header_guard],
 ## Defining symbol actions, e.g., printers and destructors.  ##
 ## --------------------------------------------------------- ##
 
 ## Defining symbol actions, e.g., printers and destructors.  ##
 ## --------------------------------------------------------- ##
 

-# b4_symbol_actions(FILENAME, LINENO,
-#                   SYMBOL-TAG, SYMBOL-NUM,
-#                   SYMBOL-ACTION, SYMBOL-TYPENAME)
-# -------------------------------------------------
-m4_define([b4_symbol_actions],
-[m4_pushdef([b4_dollar_dollar], [yyvalue.$6])dnl
-m4_pushdef([b4_at_dollar], [yylocation])dnl
-      case $4: /* $3 */
-#line $2 "$1"
-        $5;
-#line __oline__ "__ofile__"
-        break;
-m4_popdef([b4_at_dollar])dnl
-m4_popdef([b4_dollar_dollar])dnl
-])
-
-
-
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()

 m4_divert(0)dnl
 m4_divert(0)dnl

-#output "b4_output_parser_name"
+@output @output_parser_name@

 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],

-             [1984, 1989, 1990, 2000, 2001, 2002])
+             [1984, 1989, 1990, 2000, 2001, 2002, 2003])[

 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.
 
 /* As a special exception, when this file is copied by Bison into a
    Bison output file, you may use that output file without restriction.


@@ -145,15 +151,7 @@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
    define necessary library symbols; they are noted "INFRINGES ON
    USER NAME SPACE" below.  */
 
    define necessary library symbols; they are noted "INFRINGES ON
    USER NAME SPACE" below.  */
 

-/* Identify Bison output.  */
-#define YYBISON        1
-
-/* Pure parsers.  */
-#define YYPURE b4_pure
-
-/* Using locations.  */
-#define YYLSP_NEEDED b4_locations_flag
-
+]b4_identification

 m4_if(b4_prefix[], [yy], [],
 [/* If NAME_PREFIX is specified substitute the variables and functions
    names.  */
 m4_if(b4_prefix[], [yy], [],
 [/* If NAME_PREFIX is specified substitute the variables and functions
    names.  */


@@ -164,16 +162,16 @@ m4_if(b4_prefix[], [yy], [],
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs

-b4_location_if([#define yylloc b4_prefix[]lloc])])
+b4_location_if([#define yylloc b4_prefix[]lloc])])[

 
 

-b4_token_defines(b4_tokens)
+]b4_token_defines(b4_tokens)[

 
 /* Copy the first part of user declarations.  */
 
 /* Copy the first part of user declarations.  */

-b4_pre_prologue
+]b4_pre_prologue[

 
 /* Enabling traces.  */
 #ifndef YYDEBUG
 
 /* Enabling traces.  */
 #ifndef YYDEBUG

-# define YYDEBUG b4_debug
+# define YYDEBUG ]b4_debug[

 #endif
 
 /* Enabling verbose error messages.  */
 #endif
 
 /* Enabling verbose error messages.  */


@@ -181,52 +179,62 @@ b4_pre_prologue
 # undef YYERROR_VERBOSE
 # define YYERROR_VERBOSE 1
 #else
 # undef YYERROR_VERBOSE
 # define YYERROR_VERBOSE 1
 #else

-# define YYERROR_VERBOSE b4_error_verbose
+# define YYERROR_VERBOSE ]b4_error_verbose[

 #endif
 
 #endif
 

-#ifndef YYSTYPE
-m4_ifdef([b4_stype],
-[#line b4_stype_line "b4_filename"
-typedef union b4_stype yystype;
-/* Line __line__ of __file__.  */
-#line __oline__ "__ofile__"],
-[typedef int yystype;])
-# define YYSTYPE yystype
+#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
+]m4_ifdef([b4_stype],
+[b4_syncline([b4_stype_line], [b4_filename])
+typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])],
+[typedef int YYSTYPE;])[
+# define yystype YYSTYPE /* obsolescent; will be withdrawn */
+# define YYSTYPE_IS_DECLARED 1

 # define YYSTYPE_IS_TRIVIAL 1
 #endif
 
 # define YYSTYPE_IS_TRIVIAL 1
 #endif
 

-#ifndef YYLTYPE
-typedef struct yyltype
+]b4_location_if([#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
+typedef struct YYLTYPE

 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;
 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;

-} yyltype;
-# define YYLTYPE b4_ltype
+} YYLTYPE;
+# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
+# define YYLTYPE_IS_DECLARED 1

 # define YYLTYPE_IS_TRIVIAL 1
 #endif
 # define YYLTYPE_IS_TRIVIAL 1
 #endif

+])[

 
 /* Copy the second part of user declarations.  */
 
 /* Copy the second part of user declarations.  */

-b4_post_prologue
+]b4_post_prologue

 
 

-/* Line __line__ of __file__.  */
-#line __oline__ "__ofile__"
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])[

 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 
 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 

+# ifndef YYFREE
+#  define YYFREE free
+# endif
+# ifndef YYMALLOC
+#  define YYMALLOC malloc
+# endif
+

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

-# if YYSTACK_USE_ALLOCA
-#  define YYSTACK_ALLOC alloca
+# ifdef YYSTACK_USE_ALLOCA
+#  if YYSTACK_USE_ALLOCA
+#   define YYSTACK_ALLOC alloca
+#  endif

 # else
 # else

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

 #   endif
 #  endif
 # endif
 #   endif
 #  endif
 # endif


@@ -239,42 +247,43 @@ b4_post_prologue
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   define YYSIZE_T size_t
 #  endif
 #   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #   define YYSIZE_T size_t
 #  endif

-#  define YYSTACK_ALLOC malloc
-#  define YYSTACK_FREE free
+#  define YYSTACK_ALLOC YYMALLOC
+#  define YYSTACK_FREE YYFREE

 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 
 
 #if (! defined (yyoverflow) \
      && (! defined (__cplusplus) \
 # endif
 #endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
 
 
 #if (! defined (yyoverflow) \
      && (! defined (__cplusplus) \

-        || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+        || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
+             && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))

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

-  b4_location_if([  YYLTYPE yyls;
+  ]b4_location_if([  YYLTYPE yyls;

 ])dnl
 ])dnl

-};
+[};

 
 /* The size of the maximum gap between one aligned stack and the next.  */
 
 /* The size of the maximum gap between one aligned stack and the next.  */

-# define YYSTACK_GAP_MAX (sizeof (union yyalloc) - 1)
+# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)

 
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */
 
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */

-b4_location_if(
+]b4_location_if(

 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))     \
 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))     \

-      + 2 * YYSTACK_GAP_MAX)],
+      + 2 * YYSTACK_GAP_MAXIMUM)],

 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE))                                \
 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE))                                \

-      + YYSTACK_GAP_MAX)])
+      + YYSTACK_GAP_MAXIMUM)])[

 
 /* Copy COUNT objects from FROM to TO.  The source and destination do
    not overlap.  */
 # ifndef YYCOPY
 
 /* Copy COUNT objects from FROM to TO.  The source and destination do
    not overlap.  */
 # ifndef YYCOPY

-#  if 1 < __GNUC__
+#  if defined (__GNUC__) && 1 < __GNUC__

 #   define YYCOPY(To, From, Count) \
       __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
 #  else
 #   define YYCOPY(To, From, Count) \
       __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
 #  else


@@ -283,7 +292,7 @@ b4_location_if(
        {                                       \
          register YYSIZE_T yyi;                \
          for (yyi = 0; yyi < (Count); yyi++)   \
        {                                       \
          register YYSIZE_T yyi;                \
          for (yyi = 0; yyi < (Count); yyi++)   \

-           (To)[[yyi]] = (From)[[yyi]];        \
+           (To)[yyi] = (From)[yyi];            \

        }                                       \
       while (0)
 #  endif
        }                                       \
       while (0)
 #  endif


@@ -300,138 +309,145 @@ b4_location_if(
        YYSIZE_T yynewbytes;                                            \
        YYCOPY (&yyptr->Stack, Stack, yysize);                          \
        Stack = &yyptr->Stack;                                          \
        YYSIZE_T yynewbytes;                                            \
        YYCOPY (&yyptr->Stack, Stack, yysize);                          \
        Stack = &yyptr->Stack;                                          \

-       yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAX;   \
+       yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \

        yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                        \
     while (0)
 
 #endif
 
        yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                        \
     while (0)
 
 #endif
 

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

 /* YYFINAL -- State number of the termination state. */
 /* YYFINAL -- State number of the termination state. */

-#define YYFINAL  b4_final_state_number
-#define YYLAST   b4_last
+#define YYFINAL  ]b4_final_state_number[
+/* YYLAST -- Last index in YYTABLE.  */
+#define YYLAST   ]b4_last[

 
 /* YYNTOKENS -- Number of terminals. */
 
 /* YYNTOKENS -- Number of terminals. */

-#define YYNTOKENS  b4_tokens_number
+#define YYNTOKENS  ]b4_tokens_number[

 /* YYNNTS -- Number of nonterminals. */
 /* YYNNTS -- Number of nonterminals. */

-#define YYNNTS  b4_nterms_number
+#define YYNNTS  ]b4_nterms_number[

 /* YYNRULES -- Number of rules. */
 /* YYNRULES -- Number of rules. */

-#define YYNRULES  b4_rules_number
+#define YYNRULES  ]b4_rules_number[

 /* YYNRULES -- Number of states. */
 /* YYNRULES -- Number of states. */

-#define YYNSTATES  b4_states_number
+#define YYNSTATES  ]b4_states_number[

 
 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
 
 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */

-#define YYUNDEFTOK  b4_undef_token_number
-#define YYMAXUTOK   b4_user_token_number_max
+#define YYUNDEFTOK  ]b4_undef_token_number[
+#define YYMAXUTOK   ]b4_user_token_number_max[

 
 

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

 
 

-/* YYTRANSLATE[[YYLEX]] -- Bison symbol number corresponding to YYLEX.  */
-static const b4_int_type_for([b4_translate]) yytranslate[[]] =
+/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
+static const ]b4_int_type_for([b4_translate])[ yytranslate[] =

 {
 {

-  b4_translate
+  ]b4_translate[

 };
 
 #if YYDEBUG
 };
 
 #if YYDEBUG

-/* YYPRHS[[YYN]] -- Index of the first RHS symbol of rule number YYN in
+/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in

    YYRHS.  */
    YYRHS.  */

-static const b4_int_type_for([b4_prhs]) yyprhs[[]] =
+static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =

 {
 {

-  b4_prhs
+  ]b4_prhs[

 };
 
 /* YYRHS -- A `-1'-separated list of the rules' RHS. */
 };
 
 /* YYRHS -- A `-1'-separated list of the rules' RHS. */

-static const b4_int_type_for([b4_rhs]) yyrhs[[]] =
+static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =

 {
 {

-  b4_rhs
+  ]b4_rhs[

 };
 
 };
 

-/* YYRLINE[[YYN]] -- source line where rule number YYN was defined.  */
-static const b4_int_type_for([b4_rline]) yyrline[[]] =
+/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
+static const ]b4_int_type_for([b4_rline])[ yyrline[] =

 {
 {

-  b4_rline
+  ]b4_rline[

 };
 #endif
 
 #if YYDEBUG || YYERROR_VERBOSE
 };
 #endif
 
 #if YYDEBUG || YYERROR_VERBOSE

-/* YYTNME[[SYMBOL-NUM]] -- String name of the symbol SYMBOL-NUM.
+/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.

    First, the terminals, then, starting at YYNTOKENS, nonterminals. */
    First, the terminals, then, starting at YYNTOKENS, nonterminals. */

-static const char *const yytname[[]] =
+static const char *const yytname[] =

 {
 {

-  b4_tname
+  ]b4_tname[

 };
 #endif
 
 # ifdef YYPRINT
 };
 #endif
 
 # ifdef YYPRINT

-/* YYTOKNUM[[YYLEX-NUM]] -- Internal token number corresponding to
+/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to

    token YYLEX-NUM.  */
    token YYLEX-NUM.  */

-static const b4_int_type_for([b4_toknum]) yytoknum[[]] =
+static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =

 {
 {

-  b4_toknum
+  ]b4_toknum[

 };
 # endif
 
 };
 # endif
 

-/* YYR1[[YYN]] -- Symbol number of symbol that rule YYN derives.  */
-static const b4_int_type_for([b4_r1]) yyr1[[]] =
+/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+static const ]b4_int_type_for([b4_r1])[ yyr1[] =

 {
 {

-  b4_r1
+  ]b4_r1[

 };
 
 };
 

-/* YYR2[[YYN]] -- Number of symbols composing right hand side of rule YYN.  */
-static const b4_int_type_for([b4_r2]) yyr2[[]] =
+/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
+static const ]b4_int_type_for([b4_r2])[ yyr2[] =

 {
 {

-  b4_r2
+  ]b4_r2[

 };
 
 };
 

-/* YYDEFACT[[STATE-NAME]] -- Default rule to reduce with in state
+/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state

    STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
    means the default is an error.  */
    STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
    means the default is an error.  */

-static const b4_int_type_for([b4_defact]) yydefact[[]] =
+static const ]b4_int_type_for([b4_defact])[ yydefact[] =

 {
 {

-  b4_defact
+  ]b4_defact[

 };
 
 };
 

-/* YYDEFGOTO[[NTERM-NUM]]. */
-static const b4_int_type_for([b4_defgoto]) yydefgoto[[]] =
+/* YYDEFGOTO[NTERM-NUM]. */
+static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =

 {
 {

-  b4_defgoto
+  ]b4_defgoto[

 };
 
 };
 

-/* YYPACT[[STATE-NUM]] -- Index in YYTABLE of the portion describing
+/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing

    STATE-NUM.  */
    STATE-NUM.  */

-#define YYPACT_NINF b4_pact_ninf
-static const b4_int_type_for([b4_pact]) yypact[[]] =
+#define YYPACT_NINF ]b4_pact_ninf[
+static const ]b4_int_type_for([b4_pact])[ yypact[] =

 {
 {

-  b4_pact
+  ]b4_pact[

 };
 
 };
 

-/* YYPGOTO[[NTERM-NUM]].  */
-static const b4_int_type_for([b4_pgoto]) yypgoto[[]] =
+/* YYPGOTO[NTERM-NUM].  */
+static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =

 {
 {

-  b4_pgoto
+  ]b4_pgoto[

 };
 
 };
 

-/* YYTABLE[[YYPACT[STATE-NUM]]].  What to do in state STATE-NUM.  If
+/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If

    positive, shift that token.  If negative, reduce the rule which
    number is the opposite.  If zero, do what YYDEFACT says.
    positive, shift that token.  If negative, reduce the rule which
    number is the opposite.  If zero, do what YYDEFACT says.

-   If YYTABLE_NINF, parse error.  */
-#define YYTABLE_NINF b4_table_ninf
-static const b4_int_type_for([b4_table]) yytable[[]] =
+   If YYTABLE_NINF, syntax error.  */
+#define YYTABLE_NINF ]b4_table_ninf[
+static const ]b4_int_type_for([b4_table])[ yytable[] =

 {
 {

-  b4_table
+  ]b4_table[

 };
 
 };
 

-static const b4_int_type_for([b4_check]) yycheck[[]] =
+static const ]b4_int_type_for([b4_check])[ yycheck[] =

 {
 {

-  b4_check
+  ]b4_check[

 };
 
 };
 

-/* YYSTOS[[STATE-NUM]] -- The (internal number of the) accessing
+/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing

    symbol of state STATE-NUM.  */
    symbol of state STATE-NUM.  */

-static const b4_int_type_for([b4_stos]) yystos[[]] =
+static const ]b4_int_type_for([b4_stos])[ yystos[] =

 {
 {

-  b4_stos
+  ]b4_stos[

 };
 
 #if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
 };
 
 #if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)


@@ -452,12 +468,13 @@ static const b4_int_type_for([b4_stos]) yystos[[]] =
 
 #define yyerrok                (yyerrstatus = 0)
 #define yyclearin      (yychar = YYEMPTY)
 
 #define yyerrok                (yyerrstatus = 0)
 #define yyclearin      (yychar = YYEMPTY)

-#define YYEMPTY                -2
+#define YYEMPTY                (-2)

 #define YYEOF          0
 
 #define YYACCEPT       goto yyacceptlab
 #define YYABORT                goto yyabortlab
 #define YYEOF          0
 
 #define YYACCEPT       goto yyacceptlab
 #define YYABORT                goto yyabortlab

-#define YYERROR                goto yyerrlab1
+#define YYERROR                goto yyerrorlab
+

 
 /* Like YYERROR except do call yyerror.  This remains here temporarily
    to ease the transition to the new meaning of YYERROR, for GCC.
 
 /* Like YYERROR except do call yyerror.  This remains here temporarily
    to ease the transition to the new meaning of YYERROR, for GCC.


@@ -473,13 +490,13 @@ do                                                                \
     {                                                          \
       yychar = (Token);                                                \
       yylval = (Value);                                                \
     {                                                          \
       yychar = (Token);                                                \
       yylval = (Value);                                                \

-      yychar1 = YYTRANSLATE (yychar);                          \
+      yytoken = YYTRANSLATE (yychar);                          \

       YYPOPSTACK;                                              \
       goto yybackup;                                           \
     }                                                          \
   else                                                         \
     {                                                          \
       YYPOPSTACK;                                              \
       goto yybackup;                                           \
     }                                                          \
   else                                                         \
     {                                                          \

-      yyerror ("syntax error: cannot back up");                        \
+      yyerror (]b4_yyerror_args["syntax error: cannot back up");\

       YYERROR;                                                 \
     }                                                          \
 while (0)
       YYERROR;                                                 \
     }                                                          \
 while (0)


@@ -491,22 +508,20 @@ while (0)
    are run).  */
 
 #ifndef YYLLOC_DEFAULT
    are run).  */
 
 #ifndef YYLLOC_DEFAULT

-# define YYLLOC_DEFAULT(Current, Rhs, N)           \
-  Current.first_line   = Rhs[[1]].first_line;      \
-  Current.first_column = Rhs[[1]].first_column;    \
-  Current.last_line    = Rhs[[N]].last_line;       \
-  Current.last_column  = Rhs[[N]].last_column;
+# define YYLLOC_DEFAULT(Current, Rhs, N)               \
+   ((Current).first_line   = (Rhs)[1].first_line,      \
+    (Current).first_column = (Rhs)[1].first_column,    \
+    (Current).last_line    = (Rhs)[N].last_line,       \
+    (Current).last_column  = (Rhs)[N].last_column)

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

-b4_pure_if(
-[#ifdef YYLEX_PARAM
-# define YYLEX yylex (&yylval[]b4_location_if([, &yylloc]), YYLEX_PARAM)
+#ifdef YYLEX_PARAM
+# define YYLEX yylex (]b4_pure_if([&yylval[]b4_location_if([, &yylloc]), ])[YYLEX_PARAM)

 #else
 #else

-# define YYLEX yylex (&yylval[]b4_location_if([, &yylloc]))
-#endif],
-[#define YYLEX yylex ()])
+# define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
+#endif

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


@@ -521,22 +536,84 @@ do {                                              \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 } while (0)
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 } while (0)

+

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

+
+# define YYDSYMPRINTF(Title, Token, Value, Location)           \
+do {                                                           \
+  if (yydebug)                                                 \
+    {                                                          \
+      YYFPRINTF (stderr, "%s ", Title);                                \
+      yysymprint (stderr,                                      \
+                  Token, Value]b4_location_if([, Location])[); \
+      YYFPRINTF (stderr, "\n");                                        \
+    }                                                          \
+} while (0)
+
+/*------------------------------------------------------------------.
+| yy_stack_print -- Print the state stack from its BOTTOM up to its |
+| TOP (included).                                                   |
+`------------------------------------------------------------------*/
+
+]b4_c_function_def([yy_stack_print], [static void],
+                   [[short *bottom], [bottom]],
+                   [[short *top],    [top]])[
+{
+  YYFPRINTF (stderr, "Stack now");
+  for (/* Nothing. */; bottom <= top; ++bottom)
+    YYFPRINTF (stderr, " %d", *bottom);
+  YYFPRINTF (stderr, "\n");
+}
+
+# define YY_STACK_PRINT(Bottom, Top)                           \
+do {                                                           \
+  if (yydebug)                                                 \
+    yy_stack_print ((Bottom), (Top));                          \
+} while (0)
+
+
+/*------------------------------------------------.
+| Report that the YYRULE is going to be reduced.  |
+`------------------------------------------------*/
+
+]b4_c_function_def([yy_reduce_print], [static void],
+                   [[int yyrule], [yyrule]])[
+{
+  int yyi;
+  unsigned int yylno = yyrline[yyrule];
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
+             yyrule - 1, yylno);
+  /* Print the symbols being reduced, and their result.  */
+  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
+    YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
+  YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
+}
+
+# define YY_REDUCE_PRINT(Rule)         \
+do {                                   \
+  if (yydebug)                         \
+    yy_reduce_print (Rule);            \
+} while (0)
+

 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;
 #else /* !YYDEBUG */
 # define YYDPRINTF(Args)
 # define YYDSYMPRINT(Args)
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;
 #else /* !YYDEBUG */
 # define YYDPRINTF(Args)
 # define YYDSYMPRINT(Args)

+# define YYDSYMPRINTF(Title, Token, Value, Location)
+# define YY_STACK_PRINT(Bottom, Top)
+# define YY_REDUCE_PRINT(Rule)

 #endif /* !YYDEBUG */
 
 #endif /* !YYDEBUG */
 

+

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

-# define YYINITDEPTH b4_initdepth
+# define YYINITDEPTH ]b4_stack_depth_init[

 #endif
 
 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
 #endif
 
 /* YYMAXDEPTH -- maximum size the stacks can grow to (effective only


@@ -546,12 +623,12 @@ int yydebug;
    SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
    evaluated with infinite-precision integer arithmetic.  */
 
    SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
    evaluated with infinite-precision integer arithmetic.  */
 

-#if YYMAXDEPTH == 0
+#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0

 # undef YYMAXDEPTH
 #endif
 
 #ifndef YYMAXDEPTH
 # undef YYMAXDEPTH
 #endif
 
 #ifndef YYMAXDEPTH

-# define YYMAXDEPTH b4_maxdepth
+# define YYMAXDEPTH ]b4_stack_depth_max[

 #endif
 
 \f
 #endif
 
 \f


@@ -612,101 +689,29 @@ yystpcpy (yydest, yysrc)
 \f
 
 #if YYDEBUG
 \f
 
 #if YYDEBUG

-/*-----------------------------.
-| Print this symbol on YYOUT.  |
-`-----------------------------*/
-
-b4_c_function([yysymprint],
-             [static void],
-             [[FILE*],   [yyout]],
-             [[int],     [yytype]],
-             [[YYSTYPE], [yyvalue]]b4_location_if([,
-             [[YYLTYPE], [yylocation]]]))
-{
-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvalue;
-b4_location_if([  (void) yylocation;
-])dnl
-
-  if (yytype < YYNTOKENS)
-    {
-      YYFPRINTF (yyout, "token %s (", yytname[[yytype]]);
-# ifdef YYPRINT
-      YYPRINT (yyout, yytoknum[[yytype]], yyvalue);
-# endif
-    }
-  else
-    YYFPRINTF (yyout, "nterm %s (", yytname[[yytype]]);
-
-  switch (yytype)
-    {
-m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-      default:
-        break;
-    }
-  YYFPRINTF (yyout, ")");
-}
-#endif /* YYDEBUG. */
-
-
-/*-----------------------------------------------.
-| Release the memory associated to this symbol.  |
-`-----------------------------------------------*/
-
-b4_c_function([yydestruct],
-             [static void],
-             [[int],     [yytype]],
-             [[YYSTYPE], [yyvalue]]b4_location_if([,
-             [[YYLTYPE], [yylocation]]]))
-{
-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvalue;
-b4_location_if([  (void) yylocation;
-])dnl
-
-  switch (yytype)
-    {
-m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))dnl
-      default:
-        break;
-    }
-}
-
+]b4_yysymprint_generate([b4_c_function_def])[
+#endif /* ! YYDEBUG */
+]b4_yydestruct_generate([b4_c_function_def])

 \f
 
 \f
 

-/* The user can define YYPARSE_PARAM as the name of an argument to be passed
-   into yyparse.  The argument should have type void *.
-   It should actually point to an object.
-   Grammar actions can access the variable by casting it
-   to the proper pointer type.  */
+/* Prevent warnings from -Wmissing-prototypes.  */

 
 #ifdef YYPARSE_PARAM
 # if defined (__STDC__) || defined (__cplusplus)
 
 #ifdef YYPARSE_PARAM
 # if defined (__STDC__) || defined (__cplusplus)

-#  define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
-#  define YYPARSE_PARAM_DECL
+int yyparse (void *YYPARSE_PARAM);

 # else
 # else

-#  define YYPARSE_PARAM_ARG YYPARSE_PARAM
-#  define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
+int yyparse ();

 # endif
 # endif

-#else /* !YYPARSE_PARAM */
-# define YYPARSE_PARAM_ARG
-# define YYPARSE_PARAM_DECL
-#endif /* !YYPARSE_PARAM */
+#else /* ! YYPARSE_PARAM */
+b4_c_function_decl([yyparse], [int], b4_parse_param)
+#endif /* ! YYPARSE_PARAM */

 
 

-/* Prevent warning if -Wstrict-prototypes.  */
-#ifdef __GNUC__
-# ifdef YYPARSE_PARAM
-int yyparse (void *);
-# else
-int yyparse (void);
-# endif
-#endif

 
 m4_divert_push([KILL])# ======================== M4 code.
 # b4_declare_parser_variables
 # ---------------------------
 # Declare the variables that are global, or local to YYPARSE if
 
 m4_divert_push([KILL])# ======================== M4 code.
 # b4_declare_parser_variables
 # ---------------------------
 # Declare the variables that are global, or local to YYPARSE if

-#  pure-parser
+# pure-parser.

 m4_define([b4_declare_parser_variables],
 [/* The lookahead symbol.  */
 int yychar;
 m4_define([b4_declare_parser_variables],
 [/* The lookahead symbol.  */
 int yychar;


@@ -714,7 +719,7 @@ int yychar;
 /* The semantic value of the lookahead symbol.  */
 YYSTYPE yylval;
 
 /* The semantic value of the lookahead symbol.  */
 YYSTYPE yylval;
 

-/* Number of parse errors so far.  */
+/* Number of syntax errors so far.  */

 int yynerrs;b4_location_if([
 /* Location data for the lookahead symbol.  */
 YYLTYPE yylloc;])
 int yynerrs;b4_location_if([
 /* Location data for the lookahead symbol.  */
 YYLTYPE yylloc;])


@@ -724,9 +729,21 @@ m4_divert_pop([KILL])dnl# ====================== End of M4 code.
 b4_pure_if([],
            [b4_declare_parser_variables])
 
 b4_pure_if([],
            [b4_declare_parser_variables])
 

-int
-yyparse (YYPARSE_PARAM_ARG)
-     YYPARSE_PARAM_DECL
+
+/*----------.
+| yyparse.  |
+`----------*/
+
+#ifdef YYPARSE_PARAM
+# if defined (__STDC__) || defined (__cplusplus)
+int yyparse (void *YYPARSE_PARAM)
+# else
+int yyparse (YYPARSE_PARAM)
+  void *YYPARSE_PARAM;
+# endif
+#else /* ! YYPARSE_PARAM */
+b4_c_function_def([yyparse], [int], b4_parse_param)
+#endif

 {[
   ]b4_pure_if([b4_declare_parser_variables])[
   register int yystate;
 {[
   ]b4_pure_if([b4_declare_parser_variables])[
   register int yystate;


@@ -735,7 +752,7 @@ yyparse (YYPARSE_PARAM_ARG)
   /* Number of tokens to shift before error messages enabled.  */
   int yyerrstatus;
   /* Lookahead token as an internal (translated) token number.  */
   /* Number of tokens to shift before error messages enabled.  */
   int yyerrstatus;
   /* Lookahead token as an internal (translated) token number.  */

-  int yychar1 = 0;
+  int yytoken = 0;

 
   /* Three stacks and their tools:
      `yyss': related to states,
 
   /* Three stacks and their tools:
      `yyss': related to states,


@@ -759,7 +776,8 @@ yyparse (YYPARSE_PARAM_ARG)
 [[  /* The location stack.  */
   YYLTYPE yylsa[YYINITDEPTH];
   YYLTYPE *yyls = yylsa;
 [[  /* The location stack.  */
   YYLTYPE yylsa[YYINITDEPTH];
   YYLTYPE *yyls = yylsa;

-  YYLTYPE *yylsp;]])[
+  YYLTYPE *yylsp;
+  YYLTYPE *yylerrsp;]])[

 
 #define YYPOPSTACK   (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
 
 
 #define YYPOPSTACK   (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
 


@@ -789,7 +807,17 @@ yyparse (YYPARSE_PARAM_ARG)
   yyssp = yyss;
   yyvsp = yyvs;
 ]b4_location_if([  yylsp = yyls;])[
   yyssp = yyss;
   yyvsp = yyvs;
 ]b4_location_if([  yylsp = yyls;])[

-  goto yysetstate;
+]m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar],     [(*yylsp)])dnl
+m4_pushdef([b4_dollar_dollar], [(*yyvsp)])dnl
+  /* User initialization code. */
+  b4_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])dnl
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])])dnl
+
+[  goto yysetstate;

 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |
 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |


@@ -803,7 +831,7 @@ yyparse (YYPARSE_PARAM_ARG)
  yysetstate:
   *yyssp = yystate;
 
  yysetstate:
   *yyssp = yystate;
 

-  if (yyssp >= yyss + yystacksize - 1)
+  if (yyss + yystacksize - 1 <= yyssp)

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


@@ -835,10 +863,10 @@ yyparse (YYPARSE_PARAM_ARG)
       goto yyoverflowlab;
 # else
       /* Extend the stack our own way.  */
       goto yyoverflowlab;
 # else
       /* Extend the stack our own way.  */

-      if (yystacksize >= YYMAXDEPTH)
+      if (YYMAXDEPTH <= yystacksize)

        goto yyoverflowlab;
       yystacksize *= 2;
        goto yyoverflowlab;
       yystacksize *= 2;

-      if (yystacksize > YYMAXDEPTH)
+      if (YYMAXDEPTH < yystacksize)

        yystacksize = YYMAXDEPTH;
 
       {
        yystacksize = YYMAXDEPTH;
 
       {


@@ -864,7 +892,7 @@ yyparse (YYPARSE_PARAM_ARG)
       YYDPRINTF ((stderr, "Stack size increased to %lu\n",
                  (unsigned long int) yystacksize));
 
       YYDPRINTF ((stderr, "Stack size increased to %lu\n",
                  (unsigned long int) yystacksize));
 

-      if (yyssp >= yyss + yystacksize - 1)
+      if (yyss + yystacksize - 1 <= yyssp)

        YYABORT;
     }
 
        YYABORT;
     }
 


@@ -889,39 +917,28 @@ yybackup:
 
   /* Not known => get a lookahead token if don't already have one.  */
 
 
   /* Not known => get a lookahead token if don't already have one.  */
 

-  /* yychar is either YYEMPTY or YYEOF
-     or a valid token in external form.  */
-
+  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */

   if (yychar == YYEMPTY)
     {
       YYDPRINTF ((stderr, "Reading a token: "));
       yychar = YYLEX;
     }
 
   if (yychar == YYEMPTY)
     {
       YYDPRINTF ((stderr, "Reading a token: "));
       yychar = YYLEX;
     }
 

-  /* Convert token to internal form (in yychar1) for indexing tables with.  */
-
-  if (yychar <= 0)             /* This means end of input.  */
+  if (yychar <= YYEOF)

     {
     {

-      yychar1 = 0;
-      yychar = YYEOF;          /* Don't call YYLEX any more.  */
-
+      yychar = yytoken = YYEOF;

       YYDPRINTF ((stderr, "Now at end of input.\n"));
     }
   else
     {
       YYDPRINTF ((stderr, "Now at end of input.\n"));
     }
   else
     {

-      yychar1 = YYTRANSLATE (yychar);
-
-      /* We have to keep this `#if YYDEBUG', since we use variables
-        which are defined only if `YYDEBUG' is set.  */
-      YYDPRINTF ((stderr, "Next token is "));
-      YYDSYMPRINT ((stderr, yychar1, yylval]b4_location_if([, yyloc])[));
-      YYDPRINTF ((stderr, "\n"));
+      yytoken = YYTRANSLATE (yychar);
+      YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);

     }
 
     }
 

-  /* If the proper action on seeing token YYCHAR1 is to reduce or to
+  /* If the proper action on seeing token YYTOKEN is to reduce or to

      detect an error, take that action.  */
      detect an error, take that action.  */

-  yyn += yychar1;
-  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yychar1)
+  yyn += yytoken;
+  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)

     goto yydefault;
   yyn = yytable[yyn];
   if (yyn <= 0)
     goto yydefault;
   yyn = yytable[yyn];
   if (yyn <= 0)


@@ -936,8 +953,7 @@ yybackup:
     YYACCEPT;
 
   /* Shift the lookahead token.  */
     YYACCEPT;
 
   /* Shift the lookahead token.  */

-  YYDPRINTF ((stderr, "Shifting token %d (%s), ",
-             yychar, yytname[yychar1]));
+  YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));

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


@@ -984,46 +1000,21 @@ yyreduce:
 
 ]b4_location_if(
 [  /* Default location. */
 
 ]b4_location_if(
 [  /* Default location. */

-  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);])[
-
-#if YYDEBUG
-  /* We have to keep this `#if YYDEBUG', since we use variables which
-     are defined only if `YYDEBUG' is set.  */
-  if (yydebug)
-    {
-      int yyi;
-
-      YYFPRINTF (stderr, "Reducing via rule %d (line %d), ",
-                yyn - 1, yyrline[yyn]);
-
-      /* Print the symbols being reduced, and their result.  */
-      for (yyi = yyprhs[yyn]; yyrhs[yyi] >= 0; yyi++)
-       YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]);
-      YYFPRINTF (stderr, " -> %s\n", yytname[yyr1[yyn]]);
-    }
-#endif
+  YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);])[
+  YY_REDUCE_PRINT (yyn);

   switch (yyn)
     ]{
       b4_actions
     }
 
   switch (yyn)
     ]{
       b4_actions
     }
 

-/* Line __line__ of __file__.  */
-#line __oline__ "__ofile__"
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])

 \f
 [  yyvsp -= yylen;
   yyssp -= yylen;
 ]b4_location_if([  yylsp -= yylen;])[
 
 \f
 [  yyvsp -= yylen;
   yyssp -= yylen;
 ]b4_location_if([  yylsp -= yylen;])[
 

-#if YYDEBUG
-  if (yydebug)
-    {
-      short *yyssp1 = yyss - 1;
-      YYFPRINTF (stderr, "state stack now");
-      while (yyssp1 != yyssp)
-       YYFPRINTF (stderr, " %d", *++yyssp1);
-      YYFPRINTF (stderr, "\n");
-    }
-#endif
+  YY_STACK_PRINT (yyss, yyssp);

 
   *++yyvsp = yyval;
 ]b4_location_if([  *++yylsp = yyloc;])[
 
   *++yyvsp = yyval;
 ]b4_location_if([  *++yylsp = yyloc;])[


@@ -1058,88 +1049,121 @@ yyerrlab:
        {
          YYSIZE_T yysize = 0;
          int yytype = YYTRANSLATE (yychar);
        {
          YYSIZE_T yysize = 0;
          int yytype = YYTRANSLATE (yychar);

+         const char* yyprefix;

          char *yymsg;
          char *yymsg;

-         int yyx, yycount;
+         int yyx;

 
 

-         yycount = 0;

          /* Start YYX at -YYN if negative to avoid negative indexes in
             YYCHECK.  */
          /* Start YYX at -YYN if negative to avoid negative indexes in
             YYCHECK.  */

-         for (yyx = yyn < 0 ? -yyn : 0;
-              yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
+         int yyxbegin = yyn < 0 ? -yyn : 0;
+
+         /* Stay within bounds of both yycheck and yytname.  */
+         int yychecklim = YYLAST - yyn;
+         int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+         int yycount = 0;
+
+         yyprefix = ", expecting ";
+         for (yyx = yyxbegin; yyx < yyxend; ++yyx)

            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)

-             yysize += yystrlen (yytname[yyx]) + 15, yycount++;
-         yysize += yystrlen ("parse error, unexpected ") + 1;
-         yysize += yystrlen (yytname[yytype]);
+             {
+               yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
+               yycount += 1;
+               if (yycount == 5)
+                 {
+                   yysize = 0;
+                   break;
+                 }
+             }
+         yysize += (sizeof ("syntax error, unexpected ")
+                    + yystrlen (yytname[yytype]));

          yymsg = (char *) YYSTACK_ALLOC (yysize);
          if (yymsg != 0)
            {
          yymsg = (char *) YYSTACK_ALLOC (yysize);
          if (yymsg != 0)
            {

-             char *yyp = yystpcpy (yymsg, "parse error, unexpected ");
+             char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");

              yyp = yystpcpy (yyp, yytname[yytype]);
 
              if (yycount < 5)
                {
              yyp = yystpcpy (yyp, yytname[yytype]);
 
              if (yycount < 5)
                {

-                 yycount = 0;
-                 for (yyx = yyn < 0 ? -yyn : 0;
-                      yyx < (int) (sizeof (yytname) / sizeof (char *));
-                      yyx++)
+                 yyprefix = ", expecting ";
+                 for (yyx = yyxbegin; yyx < yyxend; ++yyx)

                    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
                      {
                    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
                      {

-                       const char *yyq = ! yycount ? ", expecting " : " or ";
-                       yyp = yystpcpy (yyp, yyq);
+                       yyp = yystpcpy (yyp, yyprefix);

                        yyp = yystpcpy (yyp, yytname[yyx]);
                        yyp = yystpcpy (yyp, yytname[yyx]);

-                       yycount++;
+                       yyprefix = " or ";

                      }
                }
                      }
                }

-             yyerror (yymsg);
+             yyerror (]b4_yyerror_args[yymsg);

              YYSTACK_FREE (yymsg);
            }
          else
              YYSTACK_FREE (yymsg);
            }
          else

-           yyerror ("parse error; also virtual memory exhausted");
+           yyerror (]b4_yyerror_args["syntax error; also virtual memory exhausted");

        }
       else
 #endif /* YYERROR_VERBOSE */
        }
       else
 #endif /* YYERROR_VERBOSE */

-       yyerror ("parse error");
+       yyerror (]b4_yyerror_args["syntax error");

     }
     }

-  goto yyerrlab1;

 
 

+]b4_location_if([  yylerrsp = yylsp;])[

 
 

-/*----------------------------------------------------.
-| yyerrlab1 -- error raised explicitly by an action.  |
-`----------------------------------------------------*/
-yyerrlab1:

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

-      /* Return failure if at end of input.  */
-      if (yychar == YYEOF)
+      if (yychar <= YYEOF)

         {
         {

-         /* Pop the error token.  */
-          YYPOPSTACK;
-         /* Pop the rest of the stack.  */
-         while (yyssp > yyss)
-           {
-             YYDPRINTF ((stderr, "Error: popping "));
-             YYDSYMPRINT ((stderr,
-                           yystos[*yyssp],
-                           *yyvsp]b4_location_if([, *yylsp])[));
-             YYDPRINTF ((stderr, "\n"));
-             yydestruct (yystos[*yyssp], *yyvsp]b4_location_if([, *yylsp])[);
-             YYPOPSTACK;
-           }
-         YYABORT;
+          /* If at end of input, pop the error token,
+            then the rest of the stack, then return failure.  */
+         if (yychar == YYEOF)
+            for (;;)
+              {
+                YYPOPSTACK;
+                if (yyssp == yyss)
+                  YYABORT;
+                YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
+                yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
+              }

         }
         }

-
-      YYDPRINTF ((stderr, "Discarding token %d (%s).\n",
-                 yychar, yytname[yychar1]));
-      yydestruct (yychar1, yylval]b4_location_if([, yylloc])[);
-      yychar = YYEMPTY;
+      else
+       {
+         YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
+         yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[);
+         yychar = YYEMPTY;
+]b4_location_if([        *++yylerrsp = yylloc;])[
+       }

     }
 
   /* Else will try to reuse lookahead token after shifting the error
      token.  */
     }
 
   /* Else will try to reuse lookahead token after shifting the error
      token.  */

+  goto yyerrlab1;
+

 
 

+/*---------------------------------------------------.
+| yyerrorlab -- error raised explicitly by YYERROR.  |
+`---------------------------------------------------*/
+yyerrorlab:
+
+#ifdef __GNUC__
+  /* Pacify GCC when the user code never invokes YYERROR and the label
+     yyerrorlab therefore never appears in user code.  */
+  if (0)
+     goto yyerrorlab;
+#endif
+
+  yyvsp -= yylen;
+  yyssp -= yylen;
+  yystate = *yyssp;
+  ]b4_location_if([yylerrsp = yylsp;
+  *++yylerrsp = yyloc;
+  yylsp -= yylen;
+  ])[goto yyerrlab1;
+
+
+/*-------------------------------------------------------------.
+| yyerrlab1 -- common code for both syntax error and YYERROR.  |
+`-------------------------------------------------------------*/
+yyerrlab1:

   yyerrstatus = 3;     /* Each real token shifted decrements this.  */
 
   for (;;)
   yyerrstatus = 3;     /* Each real token shifted decrements this.  */
 
   for (;;)


@@ -1160,26 +1184,11 @@ yyerrlab1:
       if (yyssp == yyss)
        YYABORT;
 
       if (yyssp == yyss)
        YYABORT;
 

-      YYDPRINTF ((stderr, "Error: popping "));
-      YYDSYMPRINT ((stderr,
-                   yystos[*yyssp], *yyvsp]b4_location_if([, *yylsp])[));
-      YYDPRINTF ((stderr, "\n"));
-
-      yydestruct (yystos[yystate], *yyvsp]b4_location_if([, *yylsp])[);
-      yyvsp--;
-      yystate = *--yyssp;
-]b4_location_if([      yylsp--;])[
-
-#if YYDEBUG
-      if (yydebug)
-       {
-         short *yyssp1 = yyss - 1;
-         YYFPRINTF (stderr, "Error: state stack now");
-         while (yyssp1 != yyssp)
-           YYFPRINTF (stderr, " %d", *++yyssp1);
-         YYFPRINTF (stderr, "\n");
-       }
-#endif
+      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
+      yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
+      YYPOPSTACK;
+      yystate = *yyssp;
+      YY_STACK_PRINT (yyss, yyssp);

     }
 
   if (yyn == YYFINAL)
     }
 
   if (yyn == YYFINAL)


@@ -1188,7 +1197,8 @@ yyerrlab1:
   YYDPRINTF ((stderr, "Shifting error token, "));
 
   *++yyvsp = yylval;
   YYDPRINTF ((stderr, "Shifting error token, "));
 
   *++yyvsp = yylval;

-]b4_location_if([  *++yylsp = yylloc;])[
+]b4_location_if([  YYLLOC_DEFAULT (yyloc, yylsp, yylerrsp - yylsp);
+  *++yylsp = yyloc;])[

 
   yystate = yyn;
   goto yynewstate;
 
   yystate = yyn;
   goto yynewstate;


@@ -1213,7 +1223,7 @@ yyabortlab:
 | yyoverflowlab -- parser overflow comes here.  |
 `----------------------------------------------*/
 yyoverflowlab:
 | yyoverflowlab -- parser overflow comes here.  |
 `----------------------------------------------*/
 yyoverflowlab:

-  yyerror ("parser stack overflow");
+  yyerror (]b4_yyerror_args["parser stack overflow");

   yyresult = 2;
   /* Fall through.  */
 #endif
   yyresult = 2;
   /* Fall through.  */
 #endif


@@ -1229,47 +1239,47 @@ yyreturn:
 
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],
 
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],

-[#output "b4_output_header_name"
+[@output @output_header_name@

 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
 b4_copyright([Skeleton parser for Yacc-like parsing with Bison],

-             [1984, 1989, 1990, 2000, 2001, 2002])
+             [1984, 1989, 1990, 2000, 2001, 2002, 2003])

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

-#ifndef b4_header_guard
-# define b4_header_guard
-

 b4_token_defines(b4_tokens)
 
 b4_token_defines(b4_tokens)
 

-#ifndef YYSTYPE
+#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)

 m4_ifdef([b4_stype],
 m4_ifdef([b4_stype],

-[#line b4_stype_line "b4_filename"
-typedef union b4_stype yystype;
-/* Line __line__ of __file__.  */
-#line __oline__ "__ofile__"],
-[typedef int yystype;])
-# define YYSTYPE yystype
+[b4_syncline([b4_stype_line], [b4_filename])
+typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
+/* Line __line__ of yacc.c.  */
+b4_syncline([@oline@], [@ofile@])],
+[typedef int YYSTYPE;])
+# define yystype YYSTYPE /* obsolescent; will be withdrawn */
+# define YYSTYPE_IS_DECLARED 1
+# define YYSTYPE_IS_TRIVIAL 1

 #endif
 
 b4_pure_if([],
 [extern YYSTYPE b4_prefix[]lval;])
 
 b4_location_if(
 #endif
 
 b4_pure_if([],
 [extern YYSTYPE b4_prefix[]lval;])
 
 b4_location_if(

-[#ifndef YYLTYPE
-typedef struct yyltype
+[#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
+typedef struct YYLTYPE

 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;
 {
   int first_line;
   int first_column;
   int last_line;
   int last_column;

-} yyltype;
-# define YYLTYPE yyltype
+} YYLTYPE;
+# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1

 #endif
 
 m4_if(b4_pure, [0],
 [extern YYLTYPE b4_prefix[]lloc;])
 ])
 #endif
 
 m4_if(b4_pure, [0],
 [extern YYLTYPE b4_prefix[]lloc;])
 ])

-#endif /* not b4_header_guard */

 ])
 ])