build: look for Perl in configure.

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 7c84f7964f1fc085783e982702a5384dafdf4052..7bcbd7ca54c84089a9d25f070a753e51dd11108b 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -2,8 +2,8 @@
 
 # Yacc compatible skeleton for Bison
 
 
 # Yacc compatible skeleton for Bison
 

-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+# Copyright (C) 1984, 1989-1990, 2000-2012 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
 
 # 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


@@ -29,8 +29,8 @@ m4_case(b4_percent_define_get([[api.push-pull]]),
         [push], [m4_define([b4_pull_flag], [[0]])])
 
 # Handle BISON_USE_PUSH_FOR_PULL for the test suite.  So that push parsing
         [push], [m4_define([b4_pull_flag], [[0]])])
 
 # Handle BISON_USE_PUSH_FOR_PULL for the test suite.  So that push parsing

-# tests function as written, don't let BISON_USE_PUSH_FOR_PULL modify Bison's
-# behavior at all when push parsing is already requested.
+# tests function as written, do not let BISON_USE_PUSH_FOR_PULL modify the
+# behavior of Bison at all when push parsing is already requested.

 b4_define_flag_if([use_push_for_pull])
 b4_use_push_for_pull_if([
   b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
 b4_define_flag_if([use_push_for_pull])
 b4_use_push_for_pull_if([
   b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],


@@ -158,9 +158,9 @@ m4_define([b4_rhs_location],
 [(yylsp@{($2) - ($1)@})])
 
 
 [(yylsp@{($2) - ($1)@})])
 
 

-## ------------------ ##
-## Parser variables.  ##
-## ------------------ ##
+## -------------- ##
+## Declarations.  ##
+## -------------- ##

 
 # b4_declare_scanner_communication_variables
 # ------------------------------------------
 
 # b4_declare_scanner_communication_variables
 # ------------------------------------------


@@ -197,7 +197,7 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
        `yyvs': related to semantic values.]b4_locations_if([[
        `yyls': related to locations.]])[
 
        `yyvs': related to semantic values.]b4_locations_if([[
        `yyls': related to locations.]])[
 

-       Refer to the stacks thru separate pointers, to allow yyoverflow
+       Refer to the stacks through separate pointers, to allow yyoverflow

        to reallocate them elsewhere.  */
 
     /* The state stack.  */
        to reallocate them elsewhere.  */
 
     /* The state stack.  */


@@ -225,16 +225,80 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
     YYSIZE_T yyes_capacity;]])])
 
 
     YYSIZE_T yyes_capacity;]])])
 
 

-## --------------------------------------------------------- ##
-## Defining symbol actions, e.g., printers and destructors.  ##
-## --------------------------------------------------------- ##
+# b4_declare_yyparse_push_
+# ------------------------
+# Declaration of yyparse (and dependencies) when using the push parser
+# (including in pull mode).
+m4_define([b4_declare_yyparse_push_],
+[[#ifndef YYPUSH_MORE_DEFINED
+# define YYPUSH_MORE_DEFINED
+enum { YYPUSH_MORE = 4 };
+#endif
+
+typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+
+]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
+])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
+  [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
+  [[[int pushed_char]], [[pushed_char]]],
+  [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
+  [[b4_api_PREFIX[LTYPE const *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
+  b4_parse_param]))
+b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
+  [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,
+  b4_parse_param]))])
+b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
+                    [[[void]], []])
+b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
+                   [[b4_prefix[pstate *ps]], [[ps]]])dnl
+])
+
+# b4_declare_yyparse_
+# -------------------
+# When not the push parser.
+m4_define([b4_declare_yyparse_],
+[[#ifdef YYPARSE_PARAM
+]b4_c_function_decl(b4_prefix[parse], [int],
+                    [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
+#else /* ! YYPARSE_PARAM */
+]b4_c_function_decl(b4_prefix[parse], [int], b4_parse_param)[
+#endif /* ! YYPARSE_PARAM */]dnl
+])
+
+
+# b4_declare_yyparse
+# ------------------
+m4_define([b4_declare_yyparse],
+[b4_push_if([b4_declare_yyparse_push_],
+            [b4_declare_yyparse_])[]dnl
+])
+
+
+# b4_shared_declarations
+# ----------------------
+# Declaration that might either go into the header (if --defines)
+# or open coded in the parser body.
+m4_define([b4_shared_declarations],
+[b4_cpp_guard_open([b4_spec_defines_file])[
+]b4_declare_yydebug[
+]b4_percent_code_get([[requires]])[
+]b4_token_enums_defines(b4_tokens)[
+]b4_declare_yylstype[
+]b4_declare_yyparse[
+]b4_percent_code_get([[provides]])[
+]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
+])
+
+## -------------- ##
+## Output files.  ##
+## -------------- ##

 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
 @output(b4_parser_file_name@)@
 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
 @output(b4_parser_file_name@)@

-b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
-             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])[
+b4_copyright([Bison implementation for Yacc-like parsers in C],
+             [1984, 1989-1990, 2000-2012])[

 
 /* C LALR(1) parser skeleton written by Richard Stallman, by
    simplifying the original so-called "semantic" parser.  */
 
 /* C LALR(1) parser skeleton written by Richard Stallman, by
    simplifying the original so-called "semantic" parser.  */


@@ -248,7 +312,11 @@ b4_copyright([Skeleton implementation for Bison's Yacc-like parsers in C],
 
 ]b4_identification
 b4_percent_code_get([[top]])[]dnl
 
 ]b4_identification
 b4_percent_code_get([[top]])[]dnl

-m4_if(b4_prefix, [yy], [],
+m4_if(b4_api_prefix, [yy], [],
+[[/* Substitute the type names.  */
+#define YYSTYPE         ]b4_api_PREFIX[STYPE]b4_locations_if([[
+#define YYLTYPE         ]b4_api_PREFIX[LTYPE]])])[
+]m4_if(b4_prefix, [yy], [],

 [[/* Substitute the variable and function names.  */]b4_pull_if([[
 #define yyparse         ]b4_prefix[parse]])b4_push_if([[
 #define yypush_parse    ]b4_prefix[push_parse]b4_pull_if([[
 [[/* Substitute the variable and function names.  */]b4_pull_if([[
 #define yyparse         ]b4_prefix[parse]])b4_push_if([[
 #define yypush_parse    ]b4_prefix[push_parse]b4_pull_if([[


@@ -261,16 +329,13 @@ m4_if(b4_prefix, [yy], [],
 #define yylval          ]b4_prefix[lval
 #define yychar          ]b4_prefix[char
 #define yydebug         ]b4_prefix[debug
 #define yylval          ]b4_prefix[lval
 #define yychar          ]b4_prefix[char
 #define yydebug         ]b4_prefix[debug

-#define yynerrs         ]b4_prefix[nerrs
-]b4_locations_if([[#define yylloc          ]b4_prefix[lloc]])])[
+#define yynerrs         ]b4_prefix[nerrs]b4_locations_if([[
+#define yylloc          ]b4_prefix[lloc]])])[

 
 /* Copy the first part of user declarations.  */
 ]b4_user_pre_prologue[
 
 
 /* Copy the first part of user declarations.  */
 ]b4_user_pre_prologue[
 

-/* Enabling traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug_flag[
-#endif
+]b4_null_define[

 
 /* Enabling verbose error messages.  */
 #ifdef YYERROR_VERBOSE
 
 /* Enabling verbose error messages.  */
 #ifdef YYERROR_VERBOSE


@@ -280,66 +345,13 @@ m4_if(b4_prefix, [yy], [],
 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
 #endif
 
 # define YYERROR_VERBOSE ]b4_error_verbose_flag[
 #endif
 

-/* Enabling the token table.  */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
-
-]b4_percent_code_get([[requires]])[]dnl
-
-b4_token_enums_defines(b4_tokens)[
-
-#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-]m4_ifdef([b4_stype],
-[[typedef union ]b4_union_name[
-{
-]b4_user_stype[
-} YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]],
-[m4_if(b4_tag_seen_flag, 0,
-[[typedef int YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]])])[
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-#endif]b4_locations_if([[
-
-#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
-typedef struct YYLTYPE
-{
-  int first_line;
-  int first_column;
-  int last_line;
-  int last_column;
-} YYLTYPE;
-# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif]])b4_push_if([[
-
-#ifndef YYPUSH_DECLS
-#  define YYPUSH_DECLS
-struct yypstate;
-typedef struct yypstate yypstate;
-enum { YYPUSH_MORE = 4 };
-
-]b4_pull_if([b4_c_function_decl([[yyparse]], [[int]], b4_parse_param)
-])b4_c_function_decl([[yypush_parse]], [[int]],
-  [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
-  [[[int yypushed_char]], [[yypushed_char]]],
-  [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
-  [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
-  b4_parse_param]))
-b4_pull_if([b4_c_function_decl([[yypull_parse]], [[int]],
-  [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
-  b4_parse_param]))])
-b4_c_function_decl([[yypstate_new]], [[yypstate *]], [[[void]], []])
-b4_c_function_decl([[yypstate_delete]], [[void]],
-                   [[[yypstate *yyps]], [[yyps]]])[
-#endif]])
-
-b4_percent_code_get([[provides]])[]dnl
+]m4_ifval(m4_quote(b4_spec_defines_file),
+[[/* In a future release of Bison, this section will be replaced
+   by #include "@basename(]b4_spec_defines_file[@)".  */
+]])dnl
+b4_shared_declarations[

 
 

-[/* Copy the second part of user declarations.  */
+/* Copy the second part of user declarations.  */

 ]b4_user_post_prologue
 b4_percent_code_get[]dnl
 
 ]b4_user_post_prologue
 b4_percent_code_get[]dnl
 


@@ -437,6 +449,7 @@ b4_push_if([], [b4_lac_if([], [[
 #    define YYSTACK_ALLOC alloca
 #    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #    define YYSTACK_ALLOC alloca
 #    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */

+      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */

 #     ifndef EXIT_SUCCESS
 #      define EXIT_SUCCESS 0
 #     endif
 #     ifndef EXIT_SUCCESS
 #      define EXIT_SUCCESS 0
 #     endif


@@ -488,8 +501,8 @@ void free (void *); /* INFRINGES ON USER NAME SPACE */
 
 #if (! defined yyoverflow \
      && (! defined __cplusplus \
 
 #if (! defined yyoverflow \
      && (! defined __cplusplus \

-        || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
-            && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+        || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
+            && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))

 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc


@@ -533,20 +546,20 @@ union yyalloc
 #endif
 
 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED
 #endif
 
 #if defined YYCOPY_NEEDED && YYCOPY_NEEDED

-/* Copy COUNT objects from FROM to TO.  The source and destination do
+/* Copy COUNT objects from SRC to DST.  The source and destination do

    not overlap.  */
 # ifndef YYCOPY
 #  if defined __GNUC__ && 1 < __GNUC__
    not overlap.  */
 # ifndef YYCOPY
 #  if defined __GNUC__ && 1 < __GNUC__

-#   define YYCOPY(To, From, Count) \
-      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
+#   define YYCOPY(Dst, Src, Count) \
+      __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))

 #  else
 #  else

-#   define YYCOPY(To, From, Count)             \
-      do                                       \
-       {                                       \
-         YYSIZE_T yyi;                         \
-         for (yyi = 0; yyi < (Count); yyi++)   \
-           (To)[yyi] = (From)[yyi];            \
-       }                                       \
+#   define YYCOPY(Dst, Src, Count)              \
+      do                                        \
+        {                                       \
+          YYSIZE_T yyi;                         \
+          for (yyi = 0; yyi < (Count); yyi++)   \
+            (Dst)[yyi] = (Src)[yyi];            \
+        }                                       \

       while (YYID (0))
 #  endif
 # endif
       while (YYID (0))
 #  endif
 # endif


@@ -579,7 +592,7 @@ static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
   ]b4_translate[
 };
 
   ]b4_translate[
 };
 

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
    YYRHS.  */
 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
 /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
    YYRHS.  */
 static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =


@@ -600,7 +613,7 @@ static const ]b4_int_type_for([b4_rline])[ yyrline[] =
 };
 #endif
 
 };
 #endif
 

-#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+#if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[

 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =
 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =


@@ -712,18 +725,19 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =
 
 #define YYRECOVERING()  (!!yyerrstatus)
 
 
 #define YYRECOVERING()  (!!yyerrstatus)
 

-#define YYBACKUP(Token, Value)                                 \
-do                                                             \
-  if (yychar == YYEMPTY && yylen == 1)                         \
-    {                                                          \
-      yychar = (Token);                                                \
-      yylval = (Value);                                                \
-      YYPOPSTACK (1);                                          \]b4_lac_if([[
-      YY_LAC_DISCARD ("YYBACKUP");                             \]])[
-      goto yybackup;                                           \
-    }                                                          \
-  else                                                         \
-    {                                                          \
+#define YYBACKUP(Token, Value)                                  \
+do                                                              \
+  if (yychar == YYEMPTY)                                        \
+    {                                                           \
+      yychar = (Token);                                         \
+      yylval = (Value);                                         \
+      YYPOPSTACK (yylen);                                       \
+      yystate = *yyssp;                                         \]b4_lac_if([[
+      YY_LAC_DISCARD ("YYBACKUP");                              \]])[
+      goto yybackup;                                            \
+    }                                                           \
+  else                                                          \
+    {                                                           \

       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                 \
     }                                                          \
       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                 \
     }                                                          \


@@ -733,31 +747,9 @@ while (YYID (0))
 #define YYTERROR       1
 #define YYERRCODE      256
 
 #define YYTERROR       1
 #define YYERRCODE      256
 

-
-/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
-   If N is 0, then set CURRENT to the empty location which ends
-   the previous symbol: RHS[0] (always defined).  */
-
+]b4_yylloc_default_define[

 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
 #define YYRHSLOC(Rhs, K) ((Rhs)[K])

-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N)                               \
-    do                                                                 \
-      if (YYID (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 (YYID (0))
-#endif]b4_locations_if([[
+]b4_locations_if([[

 
 
 /* YY_LOCATION_PRINT -- Print the location on the stream.
 
 
 /* YY_LOCATION_PRINT -- Print the location on the stream.


@@ -765,7 +757,7 @@ while (YYID (0))
    we won't break user code: when these are the locations we know.  */
 
 #ifndef YY_LOCATION_PRINT
    we won't break user code: when these are the locations we know.  */
 
 #ifndef YY_LOCATION_PRINT

-# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
+# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL

 #  define YY_LOCATION_PRINT(File, Loc)                 \
      fprintf (File, "%d.%d-%d.%d",                     \
              (Loc).first_line, (Loc).first_column,     \
 #  define YY_LOCATION_PRINT(File, Loc)                 \
      fprintf (File, "%d.%d-%d.%d",                     \
              (Loc).first_line, (Loc).first_column,     \


@@ -792,7 +784,7 @@ while (YYID (0))
 #endif
 
 /* Enable debugging if requested.  */
 #endif
 
 /* Enable debugging if requested.  */

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

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


@@ -879,12 +871,12 @@ do {                                      \
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;

-#else /* !YYDEBUG */
+#else /* !]b4_api_PREFIX[DEBUG */

 # define YYDPRINTF(Args)
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
 # define YY_STACK_PRINT(Bottom, Top)
 # define YY_REDUCE_PRINT(Rule)
 # define YYDPRINTF(Args)
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
 # define YY_STACK_PRINT(Bottom, Top)
 # define YY_REDUCE_PRINT(Rule)

-#endif /* !YYDEBUG */
+#endif /* !]b4_api_PREFIX[DEBUG */

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


@@ -915,7 +907,7 @@ int yydebug;
    required.  Return 1 if memory is exhausted.  */
 static int
 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
    required.  Return 1 if memory is exhausted.  */
 static int
 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

                       char const *yydebug_prefix,
                       char const *yydebug_suffix,
 #endif
                       char const *yydebug_prefix,
                       char const *yydebug_suffix,
 #endif


@@ -1021,7 +1013,7 @@ do {                                                             \
    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.  */
    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 YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

 # define YY_LAC_DISCARD(Event)                                           \
 do {                                                                     \
   if (yy_lac_established)                                                \
 # define YY_LAC_DISCARD(Event)                                           \
 do {                                                                     \
   if (yy_lac_established)                                                \


@@ -1124,7 +1116,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
         else
           {
             if (yy_lac_stack_realloc (yyes_capacity, 1,
         else
           {
             if (yy_lac_stack_realloc (yyes_capacity, 1,

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

                                       " (", ")",
 #endif
                                       yyes, yyesa, &yyesp, yyes_prev))
                                       " (", ")",
 #endif
                                       yyes, yyesa, &yyesp, yyes_prev))


@@ -1134,7 +1126,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
               }
             *++yyesp = yystate;
           }
               }
             *++yyesp = yystate;
           }

-        YYDPRINTF ((stderr, " G%d", *yyesp));
+        YYDPRINTF ((stderr, " G%d", yystate));

       }
     }
 }]])[
       }
     }
 }]])[


@@ -1241,12 +1233,12 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
                 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
 {
                 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
                 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
 {

-  YYSIZE_T yysize0 = yytnamerr (0, yytname[yytoken]);
+  YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);

   YYSIZE_T yysize = yysize0;
   YYSIZE_T yysize1;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */
   YYSIZE_T yysize = yysize0;
   YYSIZE_T yysize1;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */

-  const char *yyformat = 0;
+  const char *yyformat = YY_NULL;

   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per
   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per


@@ -1324,14 +1316,14 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];

-                yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+                yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);

                 if (! (yysize <= yysize1
                        && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
                   return 2;
                 yysize = yysize1;
               }
         }]b4_lac_if([[
                 if (! (yysize <= yysize1
                        && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
                   return 2;
                 yysize = yysize1;
               }
         }]b4_lac_if([[

-# if YYDEBUG
+# if ]b4_api_PREFIX[DEBUG

       else if (yydebug)
         YYFPRINTF (stderr, "No expected tokens.\n");
 # endif]])[
       else if (yydebug)
         YYFPRINTF (stderr, "No expected tokens.\n");
 # endif]])[


@@ -1388,20 +1380,12 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
 }
 #endif /* YYERROR_VERBOSE */
 
 }
 #endif /* YYERROR_VERBOSE */
 

-]b4_yydestruct_generate([b4_c_function_def])b4_push_if([], [[
+]b4_yydestruct_generate([b4_c_function_def])[

 
 

-
-/* Prevent warnings from -Wmissing-prototypes.  */
-#ifdef YYPARSE_PARAM
-]b4_c_function_decl([yyparse], [int],
-                    [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
-#else /* ! YYPARSE_PARAM */
-]b4_c_function_decl([yyparse], [int], b4_parse_param)[
-#endif /* ! YYPARSE_PARAM */]])b4_pure_if([], [
+]b4_pure_if([], [

 
 b4_declare_scanner_communication_variables])[]b4_push_if([[
 
 
 b4_declare_scanner_communication_variables])[]b4_push_if([[
 

-

 struct yypstate
   {]b4_declare_parser_state_variables[
     /* Used to determine if this is the first time this instance has
 struct yypstate
   {]b4_declare_parser_state_variables[
     /* Used to determine if this is the first time this instance has


@@ -1413,7 +1397,7 @@ static char yypstate_allocated = 0;]])b4_pull_if([
 
 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 {
 
 b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 {

-  return yypull_parse (0]m4_ifset([b4_parse_param],
+  return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],

                                   [[, ]b4_c_args(b4_parse_param)])[);
 }
 
                                   [[, ]b4_c_args(b4_parse_param)])[);
 }
 


@@ -1426,7 +1410,9 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   int yychar;
   YYSTYPE yylval;]b4_locations_if([[
   YYLTYPE yylloc;]])])[
   int yychar;
   YYSTYPE yylval;]b4_locations_if([[
   YYLTYPE yylloc;]])])[

-  if (yyps == 0)
+  if (yyps)
+    yyps_local = yyps;
+  else

     {
       yyps_local = yypstate_new ();
       if (!yyps_local)
     {
       yyps_local = yypstate_new ();
       if (!yyps_local)


@@ -1437,14 +1423,12 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
           return 2;
         }
     }
           return 2;
         }
     }

-  else
-    yyps_local = yyps;

   do {
     yychar = YYLEX;
     yystatus =
       yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
   } while (yystatus == YYPUSH_MORE);
   do {
     yychar = YYLEX;
     yystatus =
       yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
   } while (yystatus == YYPUSH_MORE);

-  if (yyps == 0)
+  if (!yyps)

     yypstate_delete (yyps_local);
   return yystatus;
 }]])[
     yypstate_delete (yyps_local);
   return yystatus;
 }]])[


@@ -1454,10 +1438,10 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 {
   yypstate *yyps;]b4_pure_if([], [[
   if (yypstate_allocated)
 {
   yypstate *yyps;]b4_pure_if([], [[
   if (yypstate_allocated)

-    return 0;]])[
+    return YY_NULL;]])[

   yyps = (yypstate *) malloc (sizeof *yyps);
   if (!yyps)
   yyps = (yypstate *) malloc (sizeof *yyps);
   if (!yyps)

-    return 0;
+    return YY_NULL;

   yyps->yynew = 1;]b4_pure_if([], [[
   yypstate_allocated = 1;]])[
   return yyps;
   yyps->yynew = 1;]b4_pure_if([], [[
   yypstate_allocated = 1;]])[
   return yyps;


@@ -1531,7 +1515,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   int yyn;
   int yyresult;
   /* Lookahead token as an internal (translated) token number.  */
   int yyn;
   int yyresult;
   /* Lookahead token as an internal (translated) token number.  */

-  int yytoken;
+  int yytoken = 0;

   /* The variables used to return semantic value and location from the
      action routines.  */
   YYSTYPE yyval;]b4_locations_if([[
   /* The variables used to return semantic value and location from the
      action routines.  */
   YYSTYPE yyval;]b4_locations_if([[


@@ -1556,7 +1540,6 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
       goto yyread_pushed_token;
     }]])[
 
       goto yyread_pushed_token;
     }]])[
 

-  yytoken = 0;

   yyss = yyssa;
   yyvs = yyvsa;]b4_locations_if([[
   yyls = yylsa;]])[
   yyss = yyssa;
   yyvs = yyvsa;]b4_locations_if([[
   yyls = yylsa;]])[


@@ -1582,23 +1565,22 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   yyvsp = yyvs;]b4_locations_if([[
   yylsp = yyls;
 
   yyvsp = yyvs;]b4_locations_if([[
   yylsp = yyls;
 

-#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
+#if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL

   /* Initialize the default location before parsing starts.  */
   yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
   yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
 #endif]])
 m4_ifdef([b4_initial_action],[
   /* Initialize the default location before parsing starts.  */
   yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
   yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
 #endif]])
 m4_ifdef([b4_initial_action],[

-m4_pushdef([b4_at_dollar],     [m4_define([b4_at_dollar_used])yylloc])dnl
-m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
+b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [],
+                  [m4_define([b4_at_dollar_used])yylloc])dnl

 /* User initialization code.  */
 b4_user_initial_action
 /* User initialization code.  */
 b4_user_initial_action

-m4_popdef([b4_dollar_dollar])dnl
-m4_popdef([b4_at_dollar])])dnl
+b4_dollar_popdef[]dnl

 m4_ifdef([b4_dollar_dollar_used],[[  yyvsp[0] = yylval;
 ]])dnl
 m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
 m4_ifdef([b4_dollar_dollar_used],[[  yyvsp[0] = yylval;
 ]])dnl
 m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;

-]])[
-  goto yysetstate;
+]])])dnl
+[  goto yysetstate;

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


@@ -2017,7 +1999,7 @@ yyabortlab:
   yyresult = 1;
   goto yyreturn;
 
   yyresult = 1;
   goto yyreturn;
 

-#if ]b4_lac_if([[1]], [[!defined(yyoverflow) || YYERROR_VERBOSE]])[
+#if ]b4_lac_if([[1]], [[!defined yyoverflow || YYERROR_VERBOSE]])[

 /*-------------------------------------------------.
 | yyexhaustedlab -- memory exhaustion comes here.  |
 `-------------------------------------------------*/
 /*-------------------------------------------------.
 | yyexhaustedlab -- memory exhaustion comes here.  |
 `-------------------------------------------------*/


@@ -2064,70 +2046,12 @@ yypushreturn:]])[
 }
 
 
 }
 
 

-]b4_epilogue
+]b4_epilogue[]dnl

 b4_defines_if(
 [@output(b4_spec_defines_file@)@
 b4_defines_if(
 [@output(b4_spec_defines_file@)@

-b4_copyright([Skeleton interface for Bison's Yacc-like parsers in C],
-             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010])
-
-b4_percent_code_get([[requires]])[]dnl
-
-b4_token_enums_defines(b4_tokens)
-
-[#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-]m4_ifdef([b4_stype],
-[[typedef union ]b4_union_name[
-{
-]b4_user_stype[
-} YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]],
-[m4_if(b4_tag_seen_flag, 0,
-[[typedef int YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1]])])[
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-#endif
+b4_copyright([Bison interface for Yacc-like parsers in C],
+             [1984, 1989-1990, 2000-2012])[

 
 

-]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])
-
-b4_locations_if(
-[#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
-typedef struct YYLTYPE
-{
-  int first_line;
-  int first_column;
-  int last_line;
-  int last_column;
-} YYLTYPE;
-# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif
-
-]b4_pure_if([], [[extern YYLTYPE ]b4_prefix[lloc;]])
-)dnl b4_locations_if
-b4_push_if([[
-#ifndef YYPUSH_DECLS
-#  define YYPUSH_DECLS
-struct ]b4_prefix[pstate;
-typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
-enum { YYPUSH_MORE = 4 };
-]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
-])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
-  [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
-  [[[int yypushed_char]], [[yypushed_char]]],
-  [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
-  [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
-  b4_parse_param]))
-b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
-  [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
-  b4_parse_param]))])
-b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
-                    [[[void]], []])
-b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
-                   [[b4_prefix[pstate *yyps]], [[yyps]]])[
-#endif
-]])
-b4_percent_code_get([[provides]])[]dnl
-])dnl b4_defines_if
+]b4_shared_declarations[
+]])dnl b4_defines_if

 m4_divert_pop(0)
 m4_divert_pop(0)