Prepare the convergence bw C style and Java table generation.

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 982747d418625ac2524375150e4caebe33a5aaf3..8b7a0601b4cb77586b08af51c3cb8b6ae0570fd3 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -1,26 +1,44 @@
-m4_divert(-1)                                                       -*- C -*-
-
+                                                             -*- C -*-

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

-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005
-# Free Software Foundation, Inc.
+# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+# 2007, 2008 Free Software Foundation, Inc.
+
+m4_pushdef([b4_copyright_years],
+[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008])

 
 

-# This program is free software; you can redistribute it and/or modify
+# 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
 # it under the terms of the GNU General Public License as published by

-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or

 # (at your option) any later version.
 # (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.
 # 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
 # You should have received a copy of the GNU General Public License

-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301  USA
-
-
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Check the value of %define api.push_pull.
+b4_percent_define_default([[api.push_pull]], [[pull]])
+b4_percent_define_check_values([[[[api.push_pull]],
+                               [[pull]], [[push]], [[both]]]])
+b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
+b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
+m4_case(b4_percent_define_get([[api.push_pull]]),
+        [pull], [m4_define([b4_push_flag], [[0]])],
+        [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.
+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]])],
+             [m4_define([b4_push_flag], [[1]])])])
+
+m4_include(b4_pkgdatadir/[c.m4])

 
 ## ---------------- ##
 ## Default values.  ##
 
 ## ---------------- ##
 ## Default values.  ##


@@ -35,21 +53,25 @@ m4_define_default([b4_stack_depth_init],  [200])
 ## Pure/impure interfaces.  ##
 ## ------------------------ ##
 
 ## Pure/impure interfaces.  ##
 ## ------------------------ ##
 

+b4_percent_define_default([[api.pure]], [[false]])
+b4_define_flag_if([pure])
+m4_define([b4_pure_flag],
+          [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])

 
 

-# b4_pure_if(IF-TRUE, IF-FALSE)
-# -----------------------------
+# b4_yacc_pure_if(IF-TRUE, IF-FALSE)
+# ----------------------------------

 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
 # Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.

-m4_define([b4_Pure_if],
+m4_define([b4_yacc_pure_if],

 [b4_pure_if([m4_ifset([b4_parse_param],
 [b4_pure_if([m4_ifset([b4_parse_param],

-                      [$1], [$2])],
-            [$2])])
+                     [$1], [$2])],
+           [$2])])

 
 
 # b4_yyerror_args
 # ---------------
 # Arguments passed to yyerror: user args plus yylloc.
 m4_define([b4_yyerror_args],
 
 
 # b4_yyerror_args
 # ---------------
 # Arguments passed to yyerror: user args plus yylloc.
 m4_define([b4_yyerror_args],

-[b4_Pure_if([b4_location_if([&yylloc, ])])dnl
+[b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl

 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 


@@ -59,11 +81,10 @@ m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 # 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_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
+b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl

 m4_ifdef([b4_lex_param], b4_lex_param)))
 
 
 m4_ifdef([b4_lex_param], b4_lex_param)))
 
 

-

 ## ------------ ##
 ## Data Types.  ##
 ## ------------ ##
 ## ------------ ##
 ## Data Types.  ##
 ## ------------ ##


@@ -71,18 +92,19 @@ m4_ifdef([b4_lex_param], b4_lex_param)))
 # b4_int_type(MIN, MAX)
 # ---------------------
 # Return the smallest int type able to handle numbers ranging from
 # 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.
+# MIN to MAX (included).  Overwrite the version from c.m4, which
+# uses only C89 types, so that the user can override the shorter
+# types, and so that pre-C89 compilers are handled correctly.

 m4_define([b4_int_type],
 m4_define([b4_int_type],

-[m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
-       b4_ints_in($@,   [-128],   [127]), [1], [yysigned_char],
+[m4_if(b4_ints_in($@,      [0],   [255]), [1], [yytype_uint8],
+       b4_ints_in($@,   [-128],   [127]), [1], [yytype_int8],

 
 

-       b4_ints_in($@,      [0], [65535]), [1], [unsigned short int],
-       b4_ints_in($@, [-32768], [32767]), [1], [short int],
+       b4_ints_in($@,      [0], [65535]), [1], [yytype_uint16],
+       b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],

 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 
 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 

-                                              [int])])
+                                              [int])])

 
 
 ## ----------------- ##
 
 
 ## ----------------- ##


@@ -94,7 +116,7 @@ m4_define([b4_int_type],
 # --------------------
 # Expansion of $<TYPE>$.
 m4_define([b4_lhs_value],
 # --------------------
 # Expansion of $<TYPE>$.
 m4_define([b4_lhs_value],

-[(yyval[]m4_ifval([$1], [.$1]))])
+[b4_symbol_value(yyval, [$1])])

 
 
 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
 
 
 # b4_rhs_value(RULE-LENGTH, NUM, [TYPE])


@@ -102,7 +124,7 @@ 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]))])
+          [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])

 
 
 
 
 
 


@@ -122,7 +144,7 @@ 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])@})])
+          [(yylsp@{b4_subtract([$2], [$1])@})])

 
 
 
 
 
 


@@ -132,18 +154,13 @@ m4_define([b4_rhs_location],
 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()

-m4_divert(0)dnl
-@output @output_parser_name@
-b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
-             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005])[
-
-/* 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.  */
+m4_divert_push(0)dnl
+@output(b4_parser_file_name@)@
+b4_copyright([Implementation for Bison's Yacc-like parsers in C])dnl'
+[

 
 

-/* 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.  */

 
 /* All symbols defined below should begin with yy or YY, to avoid
    infringing on user name space.  This should be done even for local
 
 /* All symbols defined below should begin with yy or YY, to avoid
    infringing on user name space.  This should be done even for local


@@ -153,25 +170,29 @@ b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
    USER NAME SPACE" below.  */
 
 ]b4_identification
    USER NAME SPACE" below.  */
 
 ]b4_identification

-m4_if(b4_prefix[], [yy], [],
-[/* Substitute the variable and function names.  */
-#define yyparse b4_prefix[]parse
-#define yylex   b4_prefix[]lex
-#define yyerror b4_prefix[]error
-#define yylval  b4_prefix[]lval
-#define yychar  b4_prefix[]char
-#define yydebug b4_prefix[]debug
-#define yynerrs b4_prefix[]nerrs
-b4_location_if([#define yylloc b4_prefix[]lloc])])[
-
-]b4_token_defines(b4_tokens)[
+b4_percent_code_get([[top]])[]dnl
+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([[#define yypull_parse    ]b4_prefix[pull_parse
+]])[#define yypstate_new    ]b4_prefix[pstate_new
+#define yypstate_delete ]b4_prefix[pstate_delete
+#define yypstate        ]b4_prefix[pstate
+]])[#define yylex           ]b4_prefix[lex
+#define yyerror         ]b4_prefix[error
+#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]])])[

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

-]b4_pre_prologue[
+]b4_user_pre_prologue[

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

-# define YYDEBUG ]b4_debug[
+# define YYDEBUG ]b4_debug_flag[

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


@@ -179,7 +200,7 @@ b4_location_if([#define yylloc b4_prefix[]lloc])])[
 # 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_flag[

 #endif
 
 /* Enabling the token table.  */
 #endif
 
 /* Enabling the token table.  */


@@ -187,19 +208,25 @@ b4_location_if([#define yylloc b4_prefix[]lloc])])[
 # define YYTOKEN_TABLE ]b4_token_table[
 #endif
 
 # define YYTOKEN_TABLE ]b4_token_table[
 #endif
 

-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
+]b4_percent_code_get([[requires]])[]dnl
+
+b4_token_enums_defines(b4_tokens)[
+
+#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED

 ]m4_ifdef([b4_stype],
 ]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;])[
+[[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
 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1

-# define YYSTYPE_IS_TRIVIAL 1
-#endif
+#endif]b4_locations_if([[

 
 

-]b4_location_if([#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
+#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED

 typedef struct YYLTYPE
 {
   int first_line;
 typedef struct YYLTYPE
 {
   int first_line;


@@ -210,29 +237,80 @@ typedef struct YYLTYPE
 # define yyltype YYLTYPE /* obsolescent; will be withdrawn */
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 # 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
+
+[/* Copy the second part of user declarations.  */
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
+
+[#ifdef short
+# undef short

 #endif
 #endif

-])[

 
 

-/* Copy the second part of user declarations.  */
-]b4_post_prologue
-
-/* Line __line__ of yacc.c.  */
-b4_syncline([@oline@], [@ofile@])[
+#ifdef YYTYPE_UINT8
+typedef YYTYPE_UINT8 yytype_uint8;
+#else
+typedef unsigned char yytype_uint8;
+#endif

 
 

-#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
-# define YYSIZE_T __SIZE_TYPE__
+#ifdef YYTYPE_INT8
+typedef YYTYPE_INT8 yytype_int8;
+#elif ]b4_c_modern[
+typedef signed char yytype_int8;
+#else
+typedef short int yytype_int8;

 #endif
 #endif

-#if ! defined (YYSIZE_T) && defined (size_t)
-# define YYSIZE_T size_t
+
+#ifdef YYTYPE_UINT16
+typedef YYTYPE_UINT16 yytype_uint16;
+#else
+typedef unsigned short int yytype_uint16;

 #endif
 #endif

-#if ! defined (YYSIZE_T) && (defined (__STDC__) || defined (__cplusplus))
-# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-# define YYSIZE_T size_t
+
+#ifdef YYTYPE_INT16
+typedef YYTYPE_INT16 yytype_int16;
+#else
+typedef short int yytype_int16;

 #endif
 #endif

-#if ! defined (YYSIZE_T)
-# define YYSIZE_T unsigned int
+
+#ifndef YYSIZE_T
+# ifdef __SIZE_TYPE__
+#  define YYSIZE_T __SIZE_TYPE__
+# elif defined size_t
+#  define YYSIZE_T size_t
+# elif ! defined YYSIZE_T && ]b4_c_modern[
+#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYSIZE_T size_t
+# else
+#  define YYSIZE_T unsigned int
+# endif

 #endif
 
 #endif
 

+#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
+

 #ifndef YY_
 # if YYENABLE_NLS
 #  if ENABLE_NLS
 #ifndef YY_
 # if YYENABLE_NLS
 #  if ENABLE_NLS


@@ -245,95 +323,122 @@ b4_syncline([@oline@], [@ofile@])[
 # endif
 #endif
 
 # endif
 #endif
 

-#if ! defined (yyoverflow) || YYERROR_VERBOSE
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(e) ((void) (e))
+#else
+# define YYUSE(e) /* empty */
+#endif
+
+/* Identity function, used to suppress warnings about constant conditions.  */
+#ifndef lint
+# define YYID(n) (n)
+#else
+]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
+{
+  return yyi;
+}
+#endif
+
+#if ! defined yyoverflow || YYERROR_VERBOSE

 
 

-/* The parser invokes alloca or malloc; define the necessary symbols.  */
+]b4_push_if([],
+[[/* The parser invokes alloca or malloc; define the necessary symbols.  */

 
 # ifdef YYSTACK_USE_ALLOCA
 #  if YYSTACK_USE_ALLOCA
 #   ifdef __GNUC__
 #    define YYSTACK_ALLOC __builtin_alloca
 
 # ifdef YYSTACK_USE_ALLOCA
 #  if YYSTACK_USE_ALLOCA
 #   ifdef __GNUC__
 #    define YYSTACK_ALLOC __builtin_alloca

+#   elif defined __BUILTIN_VA_ARG_INCR
+#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
+#   elif defined _AIX
+#    define YYSTACK_ALLOC __alloca
+#   elif defined _MSC_VER
+#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
+#    define alloca _alloca

 #   else
 #    define YYSTACK_ALLOC alloca
 #   else
 #    define YYSTACK_ALLOC alloca

-#    if defined (__STDC__) || defined (__cplusplus)
+#    if ! defined _ALLOCA_H && ! defined _STDLIB_H && ]b4_c_modern[

 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */

-#     define YYINCLUDED_STDLIB_H
+#     ifndef _STDLIB_H
+#      define _STDLIB_H 1
+#     endif

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

-# ifdef YYSTACK_ALLOC
-   /* Pacify GCC's `empty if-body' warning. */
-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
+]])dnl
+[# ifdef YYSTACK_ALLOC
+   /* Pacify GCC's `empty if-body' warning.  */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (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.  */
 #  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 2005 */
+#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */

 #  endif
 # else
 #  define YYSTACK_ALLOC YYMALLOC
 #  define YYSTACK_FREE YYFREE
 #  ifndef YYSTACK_ALLOC_MAXIMUM
 #  endif
 # else
 #  define YYSTACK_ALLOC YYMALLOC
 #  define YYSTACK_FREE YYFREE
 #  ifndef YYSTACK_ALLOC_MAXIMUM

-#   define YYSTACK_ALLOC_MAXIMUM ((YYSIZE_T) -1)
+#   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM

 #  endif
 #  endif

-#  ifdef __cplusplus
-extern "C" {
+#  if (defined __cplusplus && ! defined _STDLIB_H \
+       && ! ((defined YYMALLOC || defined malloc) \
+            && (defined YYFREE || defined free)))
+#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#   ifndef _STDLIB_H
+#    define _STDLIB_H 1
+#   endif

 #  endif
 #  ifndef YYMALLOC
 #   define YYMALLOC malloc
 #  endif
 #  ifndef YYMALLOC
 #   define YYMALLOC malloc

-#   if (! defined (malloc) && ! defined (YYINCLUDED_STDLIB_H) \
-       && (defined (__STDC__) || defined (__cplusplus)))
+#   if ! defined malloc && ! defined _STDLIB_H && ]b4_c_modern[

 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 #  ifndef YYFREE
 #   define YYFREE free
 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 #  ifndef YYFREE
 #   define YYFREE free

-#   if (! defined (free) && ! defined (YYINCLUDED_STDLIB_H) \
-       && (defined (__STDC__) || defined (__cplusplus)))
+#   if ! defined free && ! defined _STDLIB_H && ]b4_c_modern[

 void free (void *); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 void free (void *); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif

-#  ifdef __cplusplus
-}
-#  endif

 # endif
 # endif

-#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
+#endif /* ! defined yyoverflow || YYERROR_VERBOSE */

 
 
 
 

-#if (! defined (yyoverflow) \
-     && (! defined (__cplusplus) \
-        || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
-             && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
+#if (! defined yyoverflow \
+     && (! defined __cplusplus \
+        || (]b4_locations_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
 {
 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 {

-  short int yyss;
-  YYSTYPE yyvs;
-  ]b4_location_if([  YYLTYPE yyls;
-])dnl
-[};
+  yytype_int16 yyss_alloc;
+  YYSTYPE yyvs_alloc;]b4_locations_if([
+  YYLTYPE yyls_alloc;])[
+};

 
 /* The size of the maximum gap between one aligned stack and the next.  */
 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
 
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */
 
 /* The size of the maximum gap between one aligned stack and the next.  */
 # define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
 
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */

-]b4_location_if(
+]b4_locations_if(

 [# define YYSTACK_BYTES(N) \
 [# define YYSTACK_BYTES(N) \

-     ((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \

       + 2 * YYSTACK_GAP_MAXIMUM)],
 [# define YYSTACK_BYTES(N) \
       + 2 * YYSTACK_GAP_MAXIMUM)],
 [# define YYSTACK_BYTES(N) \

-     ((N) * (sizeof (short int) + sizeof (YYSTYPE))                    \
+     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \

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

-#  if defined (__GNUC__) && 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


@@ -344,7 +449,7 @@ union yyalloc
          for (yyi = 0; yyi < (Count); yyi++)   \
            (To)[yyi] = (From)[yyi];            \
        }                                       \
          for (yyi = 0; yyi < (Count); yyi++)   \
            (To)[yyi] = (From)[yyi];            \
        }                                       \

-      while (0)
+      while (YYID (0))

 #  endif
 # endif
 
 #  endif
 # endif
 


@@ -353,76 +458,56 @@ union yyalloc
    elements in the stack, and YYPTR gives the new location of the
    stack.  Advance YYPTR to a properly aligned location for the next
    stack.  */
    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)                                       \
+# define YYSTACK_RELOCATE(Stack_alloc, Stack)                          \

     do                                                                 \
       {                                                                        \
        YYSIZE_T yynewbytes;                                            \
     do                                                                 \
       {                                                                        \
        YYSIZE_T yynewbytes;                                            \

-       YYCOPY (&yyptr->Stack, Stack, yysize);                          \
-       Stack = &yyptr->Stack;                                          \
+       YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
+       Stack = &yyptr->Stack_alloc;                                    \

        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
        yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                        \
        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
        yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                        \

-    while (0)
+    while (YYID (0))

 
 #endif
 
 
 #endif
 

-#if defined (__STDC__) || defined (__cplusplus)
-   typedef signed char yysigned_char;
-#else
-   typedef short int yysigned_char;
-#endif
-
-/* YYFINAL -- State number of the termination state. */
+/* YYFINAL -- State number of the termination state.  */

 #define YYFINAL  ]b4_final_state_number[
 /* YYLAST -- Last index in YYTABLE.  */
 #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. */
+/* YYNSTATES -- Number of states.  */

 #define YYNSTATES  ]b4_states_number[
 
 #define YYNSTATES  ]b4_states_number[
 

-/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
+/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
+   by yylex, with out-of-bounds checking.  */

 #define YYUNDEFTOK  ]b4_undef_token_number[
 #define YYMAXUTOK   ]b4_user_token_number_max[
 
 #define YYTRANSLATE(YYX)                                               \
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 
 #define YYUNDEFTOK  ]b4_undef_token_number[
 #define YYMAXUTOK   ]b4_user_token_number_max[
 
 #define YYTRANSLATE(YYX)                                               \
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 

-/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
+/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
+   as returned by yylex, without out-of-bounds checking.  */

 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
 {
   ]b4_translate[
 };
 
 #if YYDEBUG
 static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
 {
   ]b4_translate[
 };
 
 #if YYDEBUG

-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
-   YYRHS.  */
-static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
-{
-  ]b4_prhs[
-};
-
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
-{
-  ]b4_rhs[
-};
-
-/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
-static const ]b4_int_type_for([b4_rline])[ yyrline[] =
-{
-  ]b4_rline[
-};
+]b4_integral_parser_table_define([rline], [b4_rline],
+     [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[

 #endif
 
 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
 #endif
 
 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
 /* YYTNAME[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[] =
 {
   ]b4_tname[
 static const char *const yytname[] =
 {
   ]b4_tname[


@@ -430,75 +515,19 @@ static const char *const yytname[] =
 #endif
 
 # ifdef YYPRINT
 #endif
 
 # ifdef YYPRINT

-/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
-   token YYLEX-NUM.  */
+/* YYTOKNUM[NUM] -- (External) token number corresponding to the
+   (internal) symbol number NUM (which must be that of a token).  */

 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
 {
   ]b4_toknum[
 };
 # endif
 
 static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
 {
   ]b4_toknum[
 };
 # endif
 

-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
-static const ]b4_int_type_for([b4_r1])[ yyr1[] =
-{
-  ]b4_r1[
-};
-
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
-static const ]b4_int_type_for([b4_r2])[ yyr2[] =
-{
-  ]b4_r2[
-};
-
-/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
-   STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
-   means the default is an error.  */
-static const ]b4_int_type_for([b4_defact])[ yydefact[] =
-{
-  ]b4_defact[
-};
-
-/* YYDEFGOTO[NTERM-NUM]. */
-static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
-{
-  ]b4_defgoto[
-};
-
-/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
-   STATE-NUM.  */

 #define YYPACT_NINF ]b4_pact_ninf[
 #define YYPACT_NINF ]b4_pact_ninf[

-static const ]b4_int_type_for([b4_pact])[ yypact[] =
-{
-  ]b4_pact[
-};

 
 

-/* YYPGOTO[NTERM-NUM].  */
-static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
-{
-  ]b4_pgoto[
-};
-
-/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
-   positive, shift that token.  If negative, reduce the rule which
-   number is the opposite.  If zero, do what YYDEFACT says.
-   If YYTABLE_NINF, syntax error.  */

 #define YYTABLE_NINF ]b4_table_ninf[
 #define YYTABLE_NINF ]b4_table_ninf[

-static const ]b4_int_type_for([b4_table])[ yytable[] =
-{
-  ]b4_table[
-};

 
 

-static const ]b4_int_type_for([b4_check])[ yycheck[] =
-{
-  ]b4_check[
-};
-
-/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
-   symbol of state STATE-NUM.  */
-static const ]b4_int_type_for([b4_stos])[ yystos[] =
-{
-  ]b4_stos[
-};
+]b4_parser_tables_define[

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


@@ -525,7 +554,7 @@ do                                                          \
       yychar = (Token);                                                \
       yylval = (Value);                                                \
       yytoken = YYTRANSLATE (yychar);                          \
       yychar = (Token);                                                \
       yylval = (Value);                                                \
       yytoken = YYTRANSLATE (yychar);                          \

-      YYPOPSTACK;                                              \
+      YYPOPSTACK (1);                                          \

       goto yybackup;                                           \
     }                                                          \
   else                                                         \
       goto yybackup;                                           \
     }                                                          \
   else                                                         \


@@ -533,7 +562,7 @@ do                                                          \
       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                 \
     }                                                          \
       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                 \
     }                                                          \

-while (0)
+while (YYID (0))

 
 
 #define YYTERROR       1
 
 
 #define YYTERROR       1


@@ -548,7 +577,7 @@ while (0)
 #ifndef YYLLOC_DEFAULT
 # define YYLLOC_DEFAULT(Current, Rhs, N)                               \
     do                                                                 \
 #ifndef YYLLOC_DEFAULT
 # define YYLLOC_DEFAULT(Current, Rhs, N)                               \
     do                                                                 \

-      if (N)                                                           \
+      if (YYID (N))                                                    \

        {                                                               \
          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
        {                                                               \
          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \


@@ -562,7 +591,7 @@ while (0)
          (Current).first_column = (Current).last_column =              \
            YYRHSLOC (Rhs, 0).last_column;                              \
        }                                                               \
          (Current).first_column = (Current).last_column =              \
            YYRHSLOC (Rhs, 0).last_column;                              \
        }                                                               \

-    while (0)
+    while (YYID (0))

 #endif
 
 
 #endif
 
 


@@ -574,8 +603,8 @@ while (0)
 # if YYLTYPE_IS_TRIVIAL
 #  define YY_LOCATION_PRINT(File, Loc)                 \
      fprintf (File, "%d.%d-%d.%d",                     \
 # if YYLTYPE_IS_TRIVIAL
 #  define YY_LOCATION_PRINT(File, Loc)                 \
      fprintf (File, "%d.%d-%d.%d",                     \

-              (Loc).first_line, (Loc).first_column,    \
-              (Loc).last_line,  (Loc).last_column)
+             (Loc).first_line, (Loc).first_column,     \
+             (Loc).last_line,  (Loc).last_column)

 # else
 #  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
 # endif
 # else
 #  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
 # endif


@@ -585,7 +614,7 @@ while (0)
 /* YYLEX -- calling `yylex' with the right arguments.  */
 
 #ifdef YYLEX_PARAM
 /* YYLEX -- calling `yylex' with the right arguments.  */
 
 #ifdef YYLEX_PARAM

-# define YYLEX yylex (]b4_pure_if([&yylval[]b4_location_if([, &yylloc]), ])[YYLEX_PARAM)
+# define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)

 #else
 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
 #endif
 #else
 # define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
 #endif


@@ -602,18 +631,20 @@ while (0)
 do {                                           \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 do {                                           \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \

-} while (0)
+} while (YYID (0))

 
 

-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)         \
-do {                                                           \
-  if (yydebug)                                                 \
-    {                                                          \
-      YYFPRINTF (stderr, "%s ", Title);                                \
-      yysymprint (stderr,                                      \
-                  Type, Value]b4_location_if([, Location])[);  \
-      YYFPRINTF (stderr, "\n");                                        \
-    }                                                          \
-} while (0)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                   \
+do {                                                                     \
+  if (yydebug)                                                           \
+    {                                                                    \
+      YYFPRINTF (stderr, "%s ", Title);                                          \
+      yy_symbol_print (stderr,                                           \
+                 Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
+      YYFPRINTF (stderr, "\n");                                                  \
+    }                                                                    \
+} while (YYID (0))
+
+]b4_yy_symbol_print_generate([b4_c_function_def])[

 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |


@@ -621,12 +652,15 @@ do {                                                              \
 `------------------------------------------------------------------*/
 
 ]b4_c_function_def([yy_stack_print], [static void],
 `------------------------------------------------------------------*/
 
 ]b4_c_function_def([yy_stack_print], [static void],

-                   [[short int *bottom], [bottom]],
-                   [[short int *top],    [top]])[
+                  [[yytype_int16 *yybottom], [yybottom]],
+                  [[yytype_int16 *yytop],    [yytop]])[

 {
   YYFPRINTF (stderr, "Stack now");
 {
   YYFPRINTF (stderr, "Stack now");

-  for (/* Nothing. */; bottom <= top; ++bottom)
-    YYFPRINTF (stderr, " %d", *bottom);
+  for (; yybottom <= yytop; yybottom++)
+    {
+      int yybot = *yybottom;
+      YYFPRINTF (stderr, " %d", yybot);
+    }

   YYFPRINTF (stderr, "\n");
 }
 
   YYFPRINTF (stderr, "\n");
 }
 


@@ -634,7 +668,7 @@ do {                                                                \
 do {                                                           \
   if (yydebug)                                                 \
     yy_stack_print ((Bottom), (Top));                          \
 do {                                                           \
   if (yydebug)                                                 \
     yy_stack_print ((Bottom), (Top));                          \

-} while (0)
+} while (YYID (0))

 
 
 /*------------------------------------------------.
 
 
 /*------------------------------------------------.


@@ -642,23 +676,35 @@ do {                                                              \
 `------------------------------------------------*/
 
 ]b4_c_function_def([yy_reduce_print], [static void],
 `------------------------------------------------*/
 
 ]b4_c_function_def([yy_reduce_print], [static void],

-                   [[int yyrule], [yyrule]])[
+                   [[yytype_int16 *yyssp], [yyssp]],
+                   [[YYSTYPE *yyvsp], [yyvsp]],
+    b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
+                   ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
+                   b4_parse_param]))[

 {
 {

-  int yyi;

   unsigned long int yylno = yyrline[yyrule];
   unsigned long int yylno = yyrline[yyrule];

-  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu), ",
+  int yynrhs = yyr2[yyrule];
+  int yyi;
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",

              yyrule - 1, yylno);
              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]]);
+  /* The symbols being reduced.  */
+  for (yyi = 0; yyi < yynrhs; yyi++)
+    {
+      YYFPRINTF (stderr, "   $%d = ", yyi + 1);
+      yy_symbol_print (stderr,
+                       yystos[yyssp[yyi + 1 - yynrhs]],
+                       &]b4_rhs_value(yynrhs, yyi + 1)[
+                       ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
+                       b4_user_args[);
+      YYFPRINTF (stderr, "\n");
+    }

 }
 
 # define YY_REDUCE_PRINT(Rule)         \
 do {                                   \
   if (yydebug)                         \
 }
 
 # define YY_REDUCE_PRINT(Rule)         \
 do {                                   \
   if (yydebug)                         \

-    yy_reduce_print (Rule);            \
-} while (0)
+    yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
+} while (YYID (0))

 
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */


@@ -692,42 +738,29 @@ int yydebug;
 #if YYERROR_VERBOSE
 
 # ifndef yystrlen
 #if YYERROR_VERBOSE
 
 # ifndef yystrlen

-#  if defined (__GLIBC__) && defined (_STRING_H)
+#  if defined __GLIBC__ && defined _STRING_H

 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */
 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */

-static YYSIZE_T
-#   if defined (__STDC__) || defined (__cplusplus)
-yystrlen (const char *yystr)
-#   else
-yystrlen (yystr)
-     const char *yystr;
-#   endif
+]b4_c_function_def([yystrlen], [static YYSIZE_T],
+   [[const char *yystr], [yystr]])[

 {
 {

-  const char *yys = yystr;
-
-  while (*yys++ != '\0')
+  YYSIZE_T yylen;
+  for (yylen = 0; yystr[yylen]; yylen++)

     continue;
     continue;

-
-  return yys - yystr - 1;
+  return yylen;

 }
 #  endif
 # endif
 
 # ifndef yystpcpy
 }
 #  endif
 # endif
 
 # ifndef yystpcpy

-#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
+#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE

 #   define yystpcpy stpcpy
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
    YYDEST.  */
 #   define yystpcpy stpcpy
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
    YYDEST.  */

-static char *
-#   if defined (__STDC__) || defined (__cplusplus)
-yystpcpy (char *yydest, const char *yysrc)
-#   else
-yystpcpy (yydest, yysrc)
-     char *yydest;
-     const char *yysrc;
-#   endif
+]b4_c_function_def([yystpcpy], [static char *],
+   [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[

 {
   char *yyd = yydest;
   const char *yys = yysrc;
 {
   char *yyd = yydest;
   const char *yys = yysrc;


@@ -753,7 +786,7 @@ yytnamerr (char *yyres, const char *yystr)
 {
   if (*yystr == '"')
     {
 {
   if (*yystr == '"')
     {

-      size_t yyn = 0;
+      YYSIZE_T yyn = 0;

       char const *yyp = yystr;
 
       for (;;)
       char const *yyp = yystr;
 
       for (;;)


@@ -788,159 +821,377 @@ yytnamerr (char *yyres, const char *yystr)
 }
 # endif
 
 }
 # endif
 

-#endif /* YYERROR_VERBOSE */
+/* Copy into YYRESULT an error message about the unexpected token
+   YYCHAR while in state YYSTATE.  Return the number of bytes copied,
+   including the terminating null byte.  If YYRESULT is null, do not
+   copy anything; just return the number of bytes that would be
+   copied.  As a special case, return 0 if an ordinary "syntax error"
+   message will do.  Return YYSIZE_MAXIMUM if overflow occurs during
+   size calculation.  */
+static YYSIZE_T
+yysyntax_error (char *yyresult, int yystate, int yychar)
+{
+  int yyn = yypact[yystate];

 
 

-\f
+  if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
+    return 0;
+  else
+    {
+      int yytype = YYTRANSLATE (yychar);
+      YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
+      YYSIZE_T yysize = yysize0;
+      YYSIZE_T yysize1;
+      int yysize_overflow = 0;
+      enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+      char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+      int yyx;
+
+# if 0
+      /* This is so xgettext sees the translatable formats that are
+        constructed on the fly.  */
+      YY_("syntax error, unexpected %s");
+      YY_("syntax error, unexpected %s, expecting %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s or %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
+# endif
+      char *yyfmt;
+      char const *yyf;
+      static char const yyunexpected[] = "syntax error, unexpected %s";
+      static char const yyexpecting[] = ", expecting %s";
+      static char const yyor[] = " or %s";
+      char yyformat[sizeof yyunexpected
+                   + sizeof yyexpecting - 1
+                   + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
+                      * (sizeof yyor - 1))];
+      char const *yyprefix = yyexpecting;
+
+      /* Start YYX at -YYN if negative to avoid negative indexes in
+        YYCHECK.  */
+      int yyxbegin = yyn < 0 ? -yyn : 0;
+
+      /* Stay within bounds of both yycheck and yytname.  */
+      int yychecklim = YYLAST - yyn + 1;
+      int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+      int yycount = 1;
+
+      yyarg[0] = yytname[yytype];
+      yyfmt = yystpcpy (yyformat, yyunexpected);
+
+      for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+       if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+         {
+           if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+             {
+               yycount = 1;
+               yysize = yysize0;
+               yyformat[sizeof yyunexpected - 1] = '\0';
+               break;
+             }
+           yyarg[yycount++] = yytname[yyx];
+           yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+           yysize_overflow |= (yysize1 < yysize);
+           yysize = yysize1;
+           yyfmt = yystpcpy (yyfmt, yyprefix);
+           yyprefix = yyor;
+         }

 
 

-#if YYDEBUG
-]b4_yysymprint_generate([b4_c_function_def])[
-#endif /* ! YYDEBUG */
-]b4_yydestruct_generate([b4_c_function_def])
+      yyf = YY_(yyformat);
+      yysize1 = yysize + yystrlen (yyf);
+      yysize_overflow |= (yysize1 < yysize);
+      yysize = yysize1;
+
+      if (yysize_overflow)
+       return YYSIZE_MAXIMUM;
+
+      if (yyresult)
+       {
+         /* Avoid sprintf, as that infringes on the user's name space.
+            Don't have undefined behavior even if the translation
+            produced a string with the wrong number of "%s"s.  */
+         char *yyp = yyresult;
+         int yyi = 0;
+         while ((*yyp = *yyf) != '\0')
+           {
+             if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+               {
+                 yyp += yytnamerr (yyp, yyarg[yyi++]);
+                 yyf += 2;
+               }
+             else
+               {
+                 yyp++;
+                 yyf++;
+               }
+           }
+       }
+      return yysize;
+    }
+}
+#endif /* YYERROR_VERBOSE */

 \f
 
 \f
 

-/* Prevent warnings from -Wmissing-prototypes.  */
+]b4_yydestruct_generate([b4_c_function_def])[

 
 

+]b4_push_if([],
+[[/* Prevent warnings from -Wmissing-prototypes.  */

 #ifdef YYPARSE_PARAM
 #ifdef YYPARSE_PARAM

-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM);
-# else
-int yyparse ();
-# endif
+]b4_c_function_decl([yyparse], [int],
+   [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[

 #else /* ! YYPARSE_PARAM */
 #else /* ! YYPARSE_PARAM */

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

 
 m4_divert_push([KILL])# ======================== M4 code.
 
 m4_divert_push([KILL])# ======================== M4 code.

-# b4_declare_parser_variables
-# ---------------------------
+# b4_declare_scanner_communication_variables
+# ------------------------------------------

 # Declare the variables that are global, or local to YYPARSE if
 # pure-parser.
 # Declare the variables that are global, or local to YYPARSE if
 # pure-parser.

-m4_define([b4_declare_parser_variables],
-[/* The look-ahead symbol.  */
+m4_define([b4_declare_scanner_communication_variables],
+[[/* The lookahead symbol.  */

 int yychar;
 
 int yychar;
 

-/* The semantic value of the look-ahead symbol.  */
+/* The semantic value of the lookahead symbol.  */

 YYSTYPE yylval;
 YYSTYPE yylval;

-
+]b4_locations_if([[
+/* Location data for the lookahead symbol.  */
+YYLTYPE yylloc;
+]])b4_pure_if([], [[

 /* Number of syntax errors so far.  */
 /* Number of syntax errors so far.  */

-int yynerrs;b4_location_if([
-/* Location data for the look-ahead symbol.  */
-YYLTYPE yylloc;])
-])
+int yynerrs;
+]])])
+
+# b4_declare_parser_state_variables
+# ---------------------------------
+# Declare all the variables that are needed to maintain the parser state
+# between calls to yypush_parse.
+m4_define([b4_declare_parser_state_variables],
+[b4_pure_if([[    /* Number of syntax errors so far.  */
+    int yynerrs;
+]])[
+    int yystate;
+    /* Number of tokens to shift before error messages enabled.  */
+    int yyerrstatus;
+
+    /* The stacks and their tools:
+       `yyss': related to states.
+       `yyvs': related to semantic values.]b4_locations_if([[
+       `yyls': related to locations.]])[
+
+       Refer to the stacks thru separate pointers, to allow yyoverflow
+       to reallocate them elsewhere.  */
+
+    /* The state stack.  */
+    yytype_int16 yyssa[YYINITDEPTH];
+    yytype_int16 *yyss;
+    yytype_int16 *yyssp;
+
+    /* The semantic value stack.  */
+    YYSTYPE yyvsa[YYINITDEPTH];
+    YYSTYPE *yyvs;
+    YYSTYPE *yyvsp;
+]b4_locations_if([[
+    /* The location stack.  */
+    YYLTYPE yylsa[YYINITDEPTH];
+    YYLTYPE *yyls;
+    YYLTYPE *yylsp;
+
+    /* The locations where the error started and ended.  */
+    YYLTYPE yyerror_range[2];
+]])[
+    YYSIZE_T yystacksize;
+]])
+

 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
 
 m4_divert_pop([KILL])dnl# ====================== End of M4 code.
 

-b4_pure_if([],
-           [b4_declare_parser_variables])
+b4_pure_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
+       been used.  */
+    int yynew;
+  };]b4_pure_if([], [[

 
 

+static char yypstate_allocated = 0;]])b4_pull_if([

 
 

-/*----------.
-| yyparse.  |
-`----------*/
+b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
+{
+  return yypull_parse (0]m4_ifset([b4_parse_param],
+                                  [[, ]b4_c_args(b4_parse_param)])[);
+}

 
 

+]b4_c_function_def([[yypull_parse]], [[int]],
+  [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
+  b4_parse_param]))[
+{
+  int yystatus;
+  yypstate *yyps_local;]b4_pure_if([[
+  int yychar;
+  YYSTYPE yylval;]b4_locations_if([[
+  YYLTYPE yylloc;]])])[
+  if (yyps == 0)
+    {
+      yyps_local = yypstate_new ();
+      if (!yyps_local)
+        {]b4_pure_if([[
+          yyerror (]b4_yyerror_args[YY_("memory exhausted"));]], [[
+          if (!yypstate_allocated)
+            yyerror (]b4_yyerror_args[YY_("memory exhausted"));]])[
+          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);
+  if (yyps == 0)
+    yypstate_delete (yyps_local);
+  return yystatus;
+}]])[
+
+/* Initialize the parser data structure.  */
+]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
+{
+  yypstate *yyps;]b4_pure_if([], [[
+  if (yypstate_allocated)
+    return 0;]])[
+  yyps = (yypstate *) malloc (sizeof *yyps);
+  if (!yyps)
+    return 0;
+  yyps->yynew = 1;]b4_pure_if([], [[
+  yypstate_allocated = 1;]])[
+  return yyps;
+}
+
+]b4_c_function_def([[yypstate_delete]], [[void]],
+                   [[[yypstate *yyps]], [[yyps]]])[
+{
+#ifndef yyoverflow
+  /* If the stack was reallocated but the parse did not complete, then the
+     stack still needs to be freed.  */
+  if (!yyps->yynew && yyps->yyss != yyps->yyssa)
+    YYSTACK_FREE (yyps->yyss);
+#endif
+  free (yyps);]b4_pure_if([], [[
+  yypstate_allocated = 0;]])[
+}
+
+]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
+]])[#define yystate yyps->yystate
+#define yyerrstatus yyps->yyerrstatus
+#define yyssa yyps->yyssa
+#define yyss yyps->yyss
+#define yyssp yyps->yyssp
+#define yyvsa yyps->yyvsa
+#define yyvs yyps->yyvs
+#define yyvsp yyps->yyvsp
+]b4_locations_if([[#define yylsa yyps->yylsa
+#define yyls yyps->yyls
+#define yylsp yyps->yylsp
+#define yyerror_range yyps->yyerror_range
+]])[#define yystacksize yyps->yystacksize
+]])[
+/*-------------------------.
+| yyparse or yypush_parse.  |
+`-------------------------*/
+]b4_push_if([
+b4_c_function_def([[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]))], [

 #ifdef YYPARSE_PARAM
 #ifdef YYPARSE_PARAM

-# if defined (__STDC__) || defined (__cplusplus)
-int yyparse (void *YYPARSE_PARAM)
-# else
-int yyparse (YYPARSE_PARAM)
-  void *YYPARSE_PARAM;
-# endif
+b4_c_function_def([yyparse], [int], [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])

 #else /* ! YYPARSE_PARAM */
 b4_c_function_def([yyparse], [int], b4_parse_param)
 #else /* ! YYPARSE_PARAM */
 b4_c_function_def([yyparse], [int], b4_parse_param)

-#endif
-{[
-  ]b4_pure_if([b4_declare_parser_variables])[
-  int yystate;
+#endif])[
+{
+]b4_pure_if([b4_declare_scanner_communication_variables])
+b4_push_if([b4_pure_if([], [[  int yypushed_char = yychar;
+  YYSTYPE yypushed_val = yylval;
+  ]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
+]])])],
+  [b4_declare_parser_state_variables])[

   int yyn;
   int yyresult;
   int yyn;
   int yyresult;

-  /* Number of tokens to shift before error messages enabled.  */
-  int yyerrstatus;
-  /* Look-ahead token as an internal (translated) token number.  */
-  int yytoken = 0;
-
-  /* Three stacks and their tools:
-     `yyss': related to states,
-     `yyvs': related to semantic values,
-     `yyls': related to locations.
-
-     Refer to the stacks thru separate pointers, to allow yyoverflow
-     to reallocate them elsewhere.  */
-
-  /* The state stack.  */
-  short int yyssa[YYINITDEPTH];
-  short int *yyss = yyssa;
-  short int *yyssp;
-
-  /* The semantic value stack.  */
-  YYSTYPE yyvsa[YYINITDEPTH];
-  YYSTYPE *yyvs = yyvsa;
-  YYSTYPE *yyvsp;
+  /* Lookahead token as an internal (translated) token number.  */
+  int yytoken;
+  /* The variables used to return semantic value and location from the
+     action routines.  */
+  YYSTYPE yyval;]b4_locations_if([[
+  YYLTYPE yyloc;]])[

 
 

-]b4_location_if(
-[[  /* The location stack.  */
-  YYLTYPE yylsa[YYINITDEPTH];
-  YYLTYPE *yyls = yylsa;
-  YYLTYPE *yylsp;
-  /* The locations where the error started and ended. */
-  YYLTYPE yyerror_range[2];]])[
+#if YYERROR_VERBOSE
+  /* Buffer for error messages, and its allocated size.  */
+  char yymsgbuf[128];
+  char *yymsg = yymsgbuf;
+  YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
+#endif

 
 

-#define YYPOPSTACK   (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
+#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N)]b4_locations_if([, yylsp -= (N)])[)

 
 

-  YYSIZE_T yystacksize = YYINITDEPTH;
+  /* The number of symbols on the RHS of the reduced rule.
+     Keep to zero when no symbol should be popped.  */
+  int yylen = 0;]b4_push_if([[

 
 

-  /* The variables used to return semantic value and location from the
-     action routines.  */
-  YYSTYPE yyval;
-]b4_location_if([  YYLTYPE yyloc;])[
+  if (!yyps->yynew)
+    {
+      yyn = yypact[yystate];
+      goto yyread_pushed_token;
+    }]])[

 
 

-  /* When reducing, the number of symbols on the RHS of the reduced
-     rule.  */
-  int yylen;
+  yytoken = 0;
+  yyss = yyssa;
+  yyvs = yyvsa;]b4_locations_if([[
+  yyls = yylsa;]])[
+  yystacksize = YYINITDEPTH;

 
   YYDPRINTF ((stderr, "Starting parse\n"));
 
   yystate = 0;
   yyerrstatus = 0;
   yynerrs = 0;
 
   YYDPRINTF ((stderr, "Starting parse\n"));
 
   yystate = 0;
   yyerrstatus = 0;
   yynerrs = 0;

-  yychar = YYEMPTY;            /* Cause a token to be read.  */
+  yychar = YYEMPTY; /* Cause a token to be read.  */

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

-

   yyssp = yyss;
   yyssp = yyss;

-  yyvsp = yyvs;
-]b4_location_if([[  yylsp = yyls;
+  yyvsp = yyvs;]b4_locations_if([[
+  yylsp = yyls;
+

 #if YYLTYPE_IS_TRIVIAL
   /* Initialize the default location before parsing starts.  */
 #if YYLTYPE_IS_TRIVIAL
   /* Initialize the default location before parsing starts.  */

-  yylloc.first_line   = yylloc.last_line   = 1;
-  yylloc.first_column = yylloc.last_column = 0;
-#endif
-]])
-m4_ifdef([b4_initial_action], [
+  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
 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

-  /* User initialization code. */
-b4_initial_action
+/* User initialization code.  */
+b4_user_initial_action

 m4_popdef([b4_dollar_dollar])dnl
 m4_popdef([b4_dollar_dollar])dnl

-m4_popdef([b4_at_dollar])dnl
-/* Line __line__ of yacc.c.  */
-b4_syncline([@oline@], [@ofile@])
-])dnl
+m4_popdef([b4_at_dollar])])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;

-]])dnl
-[  goto yysetstate;
+]])[
+  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
 
 /*------------------------------------------------------------.
 | 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.
-     */
+     have just been pushed.  So pushing a state here evens the stacks.  */

   yyssp++;
 
  yysetstate:
   yyssp++;
 
  yysetstate:


@@ -953,12 +1204,12 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
 
 #ifdef yyoverflow
       {
 
 #ifdef yyoverflow
       {

-       /* Give user a chance to reallocate the stack. Use copies of
+       /* Give user a chance to reallocate the stack.  Use copies of

           these so that the &'s don't force the real ones into
           memory.  */
        YYSTYPE *yyvs1 = yyvs;
           these so that the &'s don't force the real ones into
           memory.  */
        YYSTYPE *yyvs1 = yyvs;

-       short int *yyss1 = yyss;
-]b4_location_if([      YYLTYPE *yyls1 = yyls;])[
+       yytype_int16 *yyss1 = yyss;]b4_locations_if([
+       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
 
        /* Each stack pointer address is followed by the size of the
           data in use in that stack, in bytes.  This used to be a


@@ -966,10 +1217,11 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
           be undefined if yyoverflow is a macro.  */
        yyoverflow (YY_("memory exhausted"),
                    &yyss1, yysize * sizeof (*yyssp),
           be undefined if yyoverflow is a macro.  */
        yyoverflow (YY_("memory exhausted"),
                    &yyss1, yysize * sizeof (*yyssp),

-                   &yyvs1, yysize * sizeof (*yyvsp),
-]b4_location_if([                  &yyls1, yysize * sizeof (*yylsp),])[
+                   &yyvs1, yysize * sizeof (*yyvsp),]b4_locations_if([
+                   &yyls1, yysize * sizeof (*yylsp),])[

                    &yystacksize);
                    &yystacksize);

-]b4_location_if([      yyls = yyls1;])[
+]b4_locations_if([
+       yyls = yyls1;])[

        yyss = yyss1;
        yyvs = yyvs1;
       }
        yyss = yyss1;
        yyvs = yyvs1;
       }


@@ -985,14 +1237,14 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
        yystacksize = YYMAXDEPTH;
 
       {
        yystacksize = YYMAXDEPTH;
 
       {

-       short int *yyss1 = yyss;
+       yytype_int16 *yyss1 = yyss;

        union yyalloc *yyptr =
          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
        if (! yyptr)
          goto yyexhaustedlab;
        union yyalloc *yyptr =
          (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
        if (! yyptr)
          goto yyexhaustedlab;

-       YYSTACK_RELOCATE (yyss);
-       YYSTACK_RELOCATE (yyvs);
-]b4_location_if([      YYSTACK_RELOCATE (yyls);])[
+       YYSTACK_RELOCATE (yyss_alloc, yyss);
+       YYSTACK_RELOCATE (yyvs_alloc, yyvs);]b4_locations_if([
+       YYSTACK_RELOCATE (yyls_alloc, yyls);])[

 #  undef YYSTACK_RELOCATE
        if (yyss1 != yyssa)
          YYSTACK_FREE (yyss1);
 #  undef YYSTACK_RELOCATE
        if (yyss1 != yyssa)
          YYSTACK_FREE (yyss1);


@@ -1001,8 +1253,8 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
 #endif /* no yyoverflow */
 
       yyssp = yyss + yysize - 1;
 #endif /* no yyoverflow */
 
       yyssp = yyss + yysize - 1;

-      yyvsp = yyvs + yysize - 1;
-]b4_location_if([      yylsp = yyls + yysize - 1;])[
+      yyvsp = yyvs + yysize - 1;]b4_locations_if([
+      yylsp = yyls + yysize - 1;])[

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


@@ -1013,6 +1265,9 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
 
   YYDPRINTF ((stderr, "Entering state %d\n", yystate));
 
 
   YYDPRINTF ((stderr, "Entering state %d\n", yystate));
 

+  if (yystate == YYFINAL)
+    YYACCEPT;
+

   goto yybackup;
 
 /*-----------.
   goto yybackup;
 
 /*-----------.


@@ -1020,23 +1275,40 @@ m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
 `-----------*/
 yybackup:
 
 `-----------*/
 yybackup:
 

-/* Do appropriate processing given the current state.  */
-/* Read a look-ahead token if we need one and don't already have one.  */
-/* yyresume: */
-
-  /* First try to decide what to do without reference to look-ahead token.  */
+  /* 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 (yyn == YYPACT_NINF)
     goto yydefault;
 
   yyn = yypact[yystate];
   if (yyn == YYPACT_NINF)
     goto yydefault;
 

-  /* Not known => get a look-ahead 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 look-ahead symbol.  */
+  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */

   if (yychar == YYEMPTY)
   if (yychar == YYEMPTY)

-    {
-      YYDPRINTF ((stderr, "Reading a token: "));
-      yychar = YYLEX;
+    {]b4_push_if([[
+      if (!yyps->yynew)
+        {]b4_use_push_for_pull_if([], [[
+          YYDPRINTF ((stderr, "Return for a new token:\n"));]])[
+          yyresult = YYPUSH_MORE;
+          goto yypushreturn;
+        }
+      yyps->yynew = 0;]b4_pure_if([], [[
+      /* Restoring the pushed token is only necessary for the first
+         yypush_parse invocation since subsequent invocations don't overwrite
+         it before jumping to yyread_pushed_token.  */
+      yychar = yypushed_char;
+      yylval = yypushed_val;]b4_locations_if([[
+      yylloc = yypushed_loc;]])])[
+yyread_pushed_token:]])[
+      YYDPRINTF ((stderr, "Reading a token: "));]b4_push_if([b4_pure_if([[
+      yychar = yypushed_char;
+      if (yypushed_val)
+        yylval = *yypushed_val;]b4_locations_if([[
+      if (yypushed_loc)
+        yylloc = *yypushed_loc;]])])], [[
+      yychar = YYLEX;]])[

     }
 
   if (yychar <= YYEOF)
     }
 
   if (yychar <= YYEOF)


@@ -1064,25 +1336,20 @@ yybackup:
       goto yyreduce;
     }
 
       goto yyreduce;
     }
 

-  if (yyn == YYFINAL)
-    YYACCEPT;
-
-  /* Shift the look-ahead token.  */
-  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
-
-  /* Discard the token being shifted unless it is eof.  */
-  if (yychar != YYEOF)
-    yychar = YYEMPTY;
-
-  *++yyvsp = yylval;
-]b4_location_if([  *++yylsp = yylloc;])[
-

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

+  /* Shift the lookahead token.  */
+  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+  /* Discard the shifted token.  */
+  yychar = YYEMPTY;
+

   yystate = yyn;
   yystate = yyn;

+  *++yyvsp = yylval;
+]b4_locations_if([  *++yylsp = yylloc;])[

   goto yynewstate;
 
 
   goto yynewstate;
 
 


@@ -1113,27 +1380,23 @@ yyreduce:
      GCC warning that YYVAL may be used uninitialized.  */
   yyval = yyvsp[1-yylen];
 
      GCC warning that YYVAL may be used uninitialized.  */
   yyval = yyvsp[1-yylen];
 

-]b4_location_if(
-[[  /* Default location. */
-  YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[
+]b4_locations_if(
+[[  /* Default location.  */
+  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);]])[

   YY_REDUCE_PRINT (yyn);
   switch (yyn)
   YY_REDUCE_PRINT (yyn);
   switch (yyn)

-    ]{
-      b4_actions
+    {
+      ]b4_user_actions[

       default: break;
     }
       default: break;
     }

+  YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);

 
 

-/* Line __line__ of yacc.c.  */
-b4_syncline([@oline@], [@ofile@])
-\f
-[  yyvsp -= yylen;
-  yyssp -= yylen;
-]b4_location_if([  yylsp -= yylen;])[
-
+  YYPOPSTACK (yylen);
+  yylen = 0;

   YY_STACK_PRINT (yyss, yyssp);
 
   YY_STACK_PRINT (yyss, yyssp);
 

-  *++yyvsp = yyval;
-]b4_location_if([  *++yylsp = yyloc;])[
+  *++yyvsp = yyval;]b4_locations_if([
+  *++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
 
   /* Now `shift' the result of the reduction.  Determine what state
      that goes to, based on the state we popped back to and the rule


@@ -1158,133 +1421,65 @@ yyerrlab:
   if (!yyerrstatus)
     {
       ++yynerrs;
   if (!yyerrstatus)
     {
       ++yynerrs;

-#if YYERROR_VERBOSE
-      yyn = yypact[yystate];
-
-      if (YYPACT_NINF < yyn && yyn < YYLAST)
-       {
-         int yytype = YYTRANSLATE (yychar);
-         YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
-         YYSIZE_T yysize = yysize0;
-         YYSIZE_T yysize1;
-         int yysize_overflow = 0;
-         char *yymsg = 0;
-#        define YYERROR_VERBOSE_ARGS_MAXIMUM 5
-         char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
-         int yyx;
-
-#if 0
-         /* This is so xgettext sees the translatable formats that are
-            constructed on the fly.  */
-         YY_("syntax error, unexpected %s");
-         YY_("syntax error, unexpected %s, expecting %s");
-         YY_("syntax error, unexpected %s, expecting %s or %s");
-         YY_("syntax error, unexpected %s, expecting %s or %s or %s");
-         YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
-#endif
-         char *yyfmt;
-         char const *yyf;
-         static char const yyunexpected[] = "syntax error, unexpected %s";
-         static char const yyexpecting[] = ", expecting %s";
-         static char const yyor[] = " or %s";
-         char yyformat[sizeof yyunexpected
-                       + sizeof yyexpecting - 1
-                       + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
-                          * (sizeof yyor - 1))];
-         char const *yyprefix = yyexpecting;
-
-         /* Start YYX at -YYN if negative to avoid negative indexes in
-            YYCHECK.  */
-         int yyxbegin = yyn < 0 ? -yyn : 0;
-
-         /* Stay within bounds of both yycheck and yytname.  */
-         int yychecklim = YYLAST - yyn;
-         int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
-         int yycount = 1;
-
-         yyarg[0] = yytname[yytype];
-         yyfmt = yystpcpy (yyformat, yyunexpected);
-
-         for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-           if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+#if ! YYERROR_VERBOSE
+      yyerror (]b4_yyerror_args[YY_("syntax error"));
+#else
+      {
+       YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
+       if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
+         {
+           YYSIZE_T yyalloc = 2 * yysize;
+           if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
+             yyalloc = YYSTACK_ALLOC_MAXIMUM;
+           if (yymsg != yymsgbuf)
+             YYSTACK_FREE (yymsg);
+           yymsg = (char *) YYSTACK_ALLOC (yyalloc);
+           if (yymsg)
+             yymsg_alloc = yyalloc;
+           else

              {
              {

-               if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
-                 {
-                   yycount = 1;
-                   yysize = yysize0;
-                   yyformat[sizeof yyunexpected - 1] = '\0';
-                   break;
-                 }
-               yyarg[yycount++] = yytname[yyx];
-               yysize1 = yysize + yytnamerr (0, yytname[yyx]);
-               yysize_overflow |= yysize1 < yysize;
-               yysize = yysize1;
-               yyfmt = yystpcpy (yyfmt, yyprefix);
-               yyprefix = yyor;
+               yymsg = yymsgbuf;
+               yymsg_alloc = sizeof yymsgbuf;

              }
              }

+         }

 
 

-         yyf = YY_(yyformat);
-         yysize1 = yysize + yystrlen (yyf);
-         yysize_overflow |= yysize1 < yysize;
-         yysize = yysize1;
-
-         if (!yysize_overflow && yysize <= YYSTACK_ALLOC_MAXIMUM)
-           yymsg = (char *) YYSTACK_ALLOC (yysize);
-         if (yymsg)
-           {
-             /* Avoid sprintf, as that infringes on the user's name space.
-                Don't have undefined behavior even if the translation
-                produced a string with the wrong number of "%s"s.  */
-             char *yyp = yymsg;
-             int yyi = 0;
-             while ((*yyp = *yyf))
-               {
-                 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
-                   {
-                     yyp += yytnamerr (yyp, yyarg[yyi++]);
-                     yyf += 2;
-                   }
-                 else
-                   {
-                     yyp++;
-                     yyf++;
-                   }
-               }
-             yyerror (]b4_yyerror_args[yymsg);
-             YYSTACK_FREE (yymsg);
-           }
-         else
-           {
-             yyerror (]b4_yyerror_args[YY_("syntax error"));
+       if (0 < yysize && yysize <= yymsg_alloc)
+         {
+           (void) yysyntax_error (yymsg, yystate, yychar);
+           yyerror (]b4_yyerror_args[yymsg);
+         }
+       else
+         {
+           yyerror (]b4_yyerror_args[YY_("syntax error"));
+           if (yysize != 0)

              goto yyexhaustedlab;
              goto yyexhaustedlab;

-           }
-       }
-      else
-#endif /* YYERROR_VERBOSE */
-       yyerror (]b4_yyerror_args[YY_("syntax error"));
+         }
+      }
+#endif

     }
 
     }
 

-]b4_location_if([[  yyerror_range[0] = yylloc;]])[
+]b4_locations_if([[  yyerror_range[0] = yylloc;]])[

 
   if (yyerrstatus == 3)
     {
 
   if (yyerrstatus == 3)
     {

-      /* If just tried and failed to reuse look-ahead token after an
+      /* If just tried and failed to reuse lookahead token after an

         error, discard it.  */
 
       if (yychar <= YYEOF)
         error, discard it.  */
 
       if (yychar <= YYEOF)

-        {
+       {

          /* Return failure if at end of input.  */
          if (yychar == YYEOF)
            YYABORT;
          /* Return failure if at end of input.  */
          if (yychar == YYEOF)
            YYABORT;

-        }
+       }

       else
        {
       else
        {

-         yydestruct ("Error: discarding", yytoken, &yylval]b4_location_if([, &yylloc])[);
+         yydestruct ("Error: discarding",
+                     yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);

          yychar = YYEMPTY;
        }
     }
 
          yychar = YYEMPTY;
        }
     }
 

-  /* Else will try to reuse look-ahead token after shifting the error
+  /* Else will try to reuse lookahead token after shifting the error

      token.  */
   goto yyerrlab1;
 
      token.  */
   goto yyerrlab1;
 


@@ -1297,13 +1492,15 @@ yyerrorlab:
   /* Pacify compilers like GCC when the user code never invokes
      YYERROR and the label yyerrorlab therefore never appears in user
      code.  */
   /* Pacify compilers like GCC when the user code never invokes
      YYERROR and the label yyerrorlab therefore never appears in user
      code.  */

-  if (0)
+  if (/*CONSTCOND*/ 0)

      goto yyerrorlab;
 
      goto yyerrorlab;
 

-]b4_location_if([[  yyerror_range[0] = yylsp[1-yylen];
-  yylsp -= yylen;
-  ]])[yyvsp -= yylen;
-  yyssp -= yylen;
+]b4_locations_if([[  yyerror_range[0] = yylsp[1-yylen];
+]])[  /* Do not reclaim the symbols of the rule which action triggered
+     this YYERROR.  */
+  YYPOPSTACK (yylen);
+  yylen = 0;
+  YY_STACK_PRINT (yyss, yyssp);

   yystate = *yyssp;
   goto yyerrlab1;
 
   yystate = *yyssp;
   goto yyerrlab1;
 


@@ -1332,25 +1529,23 @@ yyerrlab1:
       if (yyssp == yyss)
        YYABORT;
 
       if (yyssp == yyss)
        YYABORT;
 

-]b4_location_if([[      yyerror_range[0] = *yylsp;]])[
-      yydestruct ("Error: popping", yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
-      YYPOPSTACK;
+]b4_locations_if([[      yyerror_range[0] = *yylsp;]])[
+      yydestruct ("Error: popping",
+                 yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
+      YYPOPSTACK (1);

       yystate = *yyssp;
       YY_STACK_PRINT (yyss, yyssp);
     }
 
       yystate = *yyssp;
       YY_STACK_PRINT (yyss, yyssp);
     }
 

-  if (yyn == YYFINAL)
-    YYACCEPT;
-

   *++yyvsp = yylval;
   *++yyvsp = yylval;

-]b4_location_if([[
+]b4_locations_if([[

   yyerror_range[1] = yylloc;
   /* Using YYLLOC is tempting, but would change the location of
   yyerror_range[1] = yylloc;
   /* Using YYLLOC is tempting, but would change the location of

-     the look-ahead.  YYLOC is available though. */
-  YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
+     the lookahead.  YYLOC is available though.  */
+  YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);

   *++yylsp = yyloc;]])[
 
   *++yylsp = yyloc;]])[
 

-  /* Shift the error token. */
+  /* Shift the error token.  */

   YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
 
   yystate = yyn;
   YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
 
   yystate = yyn;


@@ -1371,7 +1566,7 @@ yyabortlab:
   yyresult = 1;
   goto yyreturn;
 
   yyresult = 1;
   goto yyreturn;
 

-#ifndef yyoverflow
+#if !defined(yyoverflow) || YYERROR_VERBOSE

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


@@ -1382,53 +1577,62 @@ yyexhaustedlab:
 #endif
 
 yyreturn:
 #endif
 
 yyreturn:

-  if (yychar != YYEOF && yychar != YYEMPTY)
-     yydestruct ("Error: discarding lookahead",
-                yytoken, &yylval]b4_location_if([, &yylloc])[);
+  if (yychar != YYEMPTY)
+     yydestruct ("Cleanup: discarding lookahead",
+                yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
+  /* Do not reclaim the symbols of the rule which action triggered
+     this YYABORT or YYACCEPT.  */
+  YYPOPSTACK (yylen);
+  YY_STACK_PRINT (yyss, yyssp);

   while (yyssp != yyss)
     {
   while (yyssp != yyss)
     {

-      yydestruct ("Error: popping",
-                 yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
-      YYPOPSTACK;
+      yydestruct ("Cleanup: popping",
+                 yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
+      YYPOPSTACK (1);

     }
 #ifndef yyoverflow
   if (yyss != yyssa)
     YYSTACK_FREE (yyss);
 #endif
     }
 #ifndef yyoverflow
   if (yyss != yyssa)
     YYSTACK_FREE (yyss);
 #endif

-  return yyresult;
-]}
-
-
-b4_epilogue
-m4_if(b4_defines_flag, 0, [],
-[@output @output_header_name@
-b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
-             [1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005])
-
-/* 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.  */
-
-b4_token_defines(b4_tokens)
-
-#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;])
+]b4_push_if([[  yyps->yynew = 1;
+
+yypushreturn:
+]])[#if YYERROR_VERBOSE
+  if (yymsg != yymsgbuf)
+    YYSTACK_FREE (yymsg);
+#endif
+  /* Make sure YYID is used.  */
+  return YYID (yyresult);
+}
+
+
+]b4_epilogue
+b4_defines_if(
+[@output(b4_spec_defines_file@)@
+b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl'
+
+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
 # define yystype YYSTYPE /* obsolescent; will be withdrawn */
 # define YYSTYPE_IS_DECLARED 1

-# define YYSTYPE_IS_TRIVIAL 1

 #endif
 
 #endif
 

-b4_pure_if([],
-[extern YYSTYPE b4_prefix[]lval;])
+]b4_pure_if([], [[extern YYSTYPE ]b4_prefix[lval;]])

 
 

-b4_location_if(
-[#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
+b4_locations_if(
+[#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED

 typedef struct YYLTYPE
 {
   int first_line;
 typedef struct YYLTYPE
 {
   int first_line;


@@ -1441,7 +1645,31 @@ typedef struct YYLTYPE
 # define YYLTYPE_IS_TRIVIAL 1
 #endif
 
 # define YYLTYPE_IS_TRIVIAL 1
 #endif
 

-m4_if(b4_pure, [0],
-[extern YYLTYPE b4_prefix[]lloc;])
-])
-])
+]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
+m4_divert_pop(0)
+m4_popdef([b4_copyright_years])