* data/glr.c (b4_lhs_value, b4_rhs_value, b4_rhs-location):

[bison.git] / data / glr.c

diff --git a/data/glr.c b/data/glr.c
index 23139d110a833ba4396863d4ab90198eb061d3a4..bed1521455c0ac7fdcaf192f5b3841705d609296 100644 (file)
--- a/data/glr.c
+++ b/data/glr.c
@@ -1,8 +1,7 @@
 m4_divert(-1)                                                       -*- C -*-
 m4_divert(-1)                                                       -*- C -*-

-m4_include([c.m4])

 
 # GLR skeleton for Bison
 
 # GLR skeleton for Bison

-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004 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


@@ -19,11 +18,92 @@ m4_include([c.m4])
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307  USA
 
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307  USA
 

+
+## ---------------- ##
+## Default values.  ##
+## ---------------- ##
+
+# Stack parameters.
+m4_define_default([b4_stack_depth_max], [10000])
+m4_define_default([b4_stack_depth_init],  [200])
+
+
+
+## ------------------------ ##
+## Pure/impure interfaces.  ##
+## ------------------------ ##
+
+
+# b4_lex_param
+# ------------
+# Accumule in b4_lex_param all the yylex arguments.
+# Yes, this is quite ugly...
+m4_define([b4_lex_param],
+m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[yylvalp]]][]dnl
+b4_location_if([, [[YYLTYPE *], [yyllocp]]])])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
+
+
+# b4_user_formals
+# ---------------
+m4_define([b4_user_formals],
+[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
+
+
+# b4_yyerror_args
+# ---------------
+# Arguments passed to yyerror: user args plus yylloc.
+m4_define([b4_yyerror_args],
+[b4_pure_if([b4_location_if([yylocp, ])])dnl
+m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
+
+
+# b4_lyyerror_args
+# ----------------
+# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+m4_define([b4_lyyerror_args],
+[b4_pure_if([b4_location_if([yyllocp, ])])dnl
+m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
+
+
+# b4_pure_args
+# ------------
+# Arguments needed by yyerror: user args plus yylloc.
+m4_define([b4_pure_args],
+[b4_pure_if([b4_location_if([, yylocp])])[]b4_user_args])
+
+
+# b4_pure_formals
+# ---------------
+# Arguments passed to yyerror: user formals plus yyllocp.
+m4_define([b4_pure_formals],
+[b4_pure_if([b4_location_if([, YYLTYPE *yylocp])])[]b4_user_formals])
+
+
+# b4_lpure_args
+# -------------
+# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+m4_define([b4_lpure_args],
+[b4_pure_if([b4_location_if([, yyllocp])])[]b4_user_args])
+
+
+# b4_lpure_formals
+# ----------------
+# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+m4_define([b4_lpure_formals],
+[b4_pure_if([b4_location_if([YYLTYPE *yyllocp])])[]b4_user_formals])
+
+
+## ----------------- ##
+## Semantic Values.  ##
+## ----------------- ##
+
+

 # b4_lhs_value([TYPE])
 # --------------------
 # Expansion of $<TYPE>$.
 m4_define([b4_lhs_value],
 # b4_lhs_value([TYPE])
 # --------------------
 # Expansion of $<TYPE>$.
 m4_define([b4_lhs_value],

-[(*yyvalp)[]m4_ifval([$1], [.$1])])
+[((*yyvalp)[]m4_ifval([$1], [.$1]))])

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


@@ -31,7 +111,7 @@ 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])@:>@.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3])])
+[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])

 
 
 
 
 
 


@@ -39,15 +119,6 @@ m4_define([b4_rhs_value],
 ## Locations.  ##
 ## ----------- ##
 
 ## Locations.  ##
 ## ----------- ##
 

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

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


@@ -60,73 +131,25 @@ 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],

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

 
 

+# We do want M4 expansion after # for CPP macros.
+m4_changecom()

 m4_divert(0)dnl
 m4_divert(0)dnl

-#output "b4_output_parser_name"
-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002])
+@output @output_parser_name@
+b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004])

 [
 /* This is the parser code for GLR (Generalized LR) parser. */
 
 [
 /* This is the parser code for GLR (Generalized LR) parser. */
 

-/* FIXME: minimize these */
-#include <assert.h>
-#include <setjmp.h>
-#include <stdarg.h>

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

+#include <stdarg.h>
+#include <setjmp.h>

 
 

-/* Identify Bison output.  */
-#define YYBISON        1
-
-/* Pure parsers.  */
-#define YYPURE ]b4_pure[
-
-/* Using locations.  */
-#define YYLSP_NEEDED ]b4_locations_flag[
-
-]m4_if(b4_prefix[], [yy], [],
-[/* If NAME_PREFIX is specified substitute the variables and functions
-   names.  */
+]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 yyparse b4_prefix[]parse
 #define yylex   b4_prefix[]lex
 #define yyerror b4_prefix[]error


@@ -134,7 +157,7 @@ b4_copyright([Skeleton parser for GLR parsing with Bison], [2002])
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs

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

 
 b4_token_defines(b4_tokens)
 
 
 b4_token_defines(b4_tokens)
 


@@ -154,55 +177,63 @@ b4_pre_prologue[
 # define YYERROR_VERBOSE ]b4_error_verbose[
 #endif
 
 # define YYERROR_VERBOSE ]b4_error_verbose[
 #endif
 

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

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

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

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

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

 {
 ]b4_location_if([
   int first_line;
   int first_column;
   int last_line;
 {
 ]b4_location_if([
   int first_line;
   int first_column;
   int last_line;

-  int last_column;])[
-} yyltype;
-# define YYLTYPE ]b4_ltype[
+  int last_column;
+],[
+  char yydummy;
+])[
+} YYLTYPE;
+# define YYLTYPE_IS_DECLARED 1

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

-/* Default (constant) values used for initialization for null
-   right-hand sides.  Unlike the standard bison.simple template,
-   here we set the default values of the $$ and $@ to zeroed-out
-   values.  Since the default value of these quantities is undefined,
-   this behavior is technically correct. */
+/* Default (constant) value used for initialization for null
+   right-hand sides.  Unlike the standard yacc.c template,
+   here we set the default value of $$ to a zeroed-out value.
+   Since the default value is undefined, this behavior is
+   technically correct. */

 static YYSTYPE yyval_default;
 static YYSTYPE yyval_default;

-static YYLTYPE yyloc_default;

 
 /* Copy the second part of user declarations.  */
 ]b4_post_prologue[
 
 
 /* Copy the second part of user declarations.  */
 ]b4_post_prologue[
 

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

 [
 [

-#if ! defined (__cplusplus)
-   typedef char bool;
-#  define yytrue 1
-#  define yyfalse 0
+#ifndef YYFREE
+# define YYFREE free
+#endif
+#ifndef YYMALLOC
+# define YYMALLOC malloc
+#endif
+#ifndef YYREALLOC
+# define YYREALLOC realloc

 #endif
 
 #endif
 

-#if defined (__STDC__) || defined (__cplusplus)
-   typedef signed char yysigned_char;
+#ifdef __cplusplus
+   typedef bool yybool;

 #else
 #else

-   typedef short yysigned_char;
+   typedef unsigned char yybool;

 #endif
 #endif

+#define yytrue 1
+#define yyfalse 0

 
 /*-----------------.
 | GCC extensions.  |
 
 /*-----------------.
 | GCC extensions.  |


@@ -216,16 +247,17 @@ static YYLTYPE yyloc_default;
 # endif
 #endif
 
 # endif
 #endif
 

-#ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#ifndef YYASSERT
+# define YYASSERT(condition) ((void) ((condition) || (abort (), 0)))

 #endif
 
 #endif
 

-#if ! defined (__GNUC__)
-# define inline
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))

 #endif
 
 /* YYFINAL -- State number of the termination state. */
 #define YYFINAL  ]b4_final_state_number[
 #endif
 
 /* YYFINAL -- State number of the termination state. */
 #define YYFINAL  ]b4_final_state_number[

+/* YYLAST -- Last index in YYTABLE.  */

 #define YYLAST   ]b4_last[
 
 /* YYNTOKENS -- Number of terminals. */
 #define YYLAST   ]b4_last[
 
 /* YYNTOKENS -- Number of terminals. */


@@ -238,13 +270,17 @@ static YYLTYPE yyloc_default;
 #define YYNSTATES  ]b4_states_number[
 /* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */
 #define YYMAXRHS ]b4_r2_max[
 #define YYNSTATES  ]b4_states_number[
 /* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */
 #define YYMAXRHS ]b4_r2_max[

+/* YYMAXLEFT -- Maximum number of symbols to the left of a handle
+   accessed by $0, $-1, etc., in any rule. */
+#define YYMAXLEFT ]b4_max_left_semantic_context[

 
 /* YYTRANSLATE(X) -- Bison symbol number corresponding to X.  */
 #define YYUNDEFTOK  ]b4_undef_token_number[
 #define YYMAXUTOK   ]b4_user_token_number_max[
 
 
 /* YYTRANSLATE(X) -- Bison symbol number corresponding to X.  */
 #define YYUNDEFTOK  ]b4_undef_token_number[
 #define YYMAXUTOK   ]b4_user_token_number_max[
 

-#define YYTRANSLATE(YYX) \
-  ((unsigned)(YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+#define YYTRANSLATE(YYX)                                               \
+  ((YYX <= 0) ? YYEOF :                                                        \
+   (unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)

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


@@ -280,8 +316,6 @@ static const char *const yytname[] =
 {
   ]b4_tname[
 };
 {
   ]b4_tname[
 };

-
-#define yytname_size ((int) (sizeof (yytname) / sizeof (yytname[0])))

 #endif
 
 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 #endif
 
 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */


@@ -339,7 +373,7 @@ static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
 /* 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.
 /* 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, parse error.  */
+   If YYTABLE_NINF, syntax error.  */

 #define YYTABLE_NINF ]b4_table_ninf[
 static const ]b4_int_type_for([b4_table])[ yytable[] =
 {
 #define YYTABLE_NINF ]b4_table_ninf[
 static const ]b4_int_type_for([b4_table])[ yytable[] =
 {


@@ -358,9 +392,9 @@ static const ]b4_int_type_for([b4_conflict_list_heads])[ yyconflp[] =
 /* YYCONFL[I] -- lists of conflicting rule numbers, each terminated by
    0, pointed into by YYCONFLP.  */
 ]dnl Do not use b4_int_type_for here, since there are places where
 /* YYCONFL[I] -- lists of conflicting rule numbers, each terminated by
    0, pointed into by YYCONFLP.  */
 ]dnl Do not use b4_int_type_for here, since there are places where

-dnl pointers onto yyconfl are taken, which type is "short *".
+dnl pointers onto yyconfl are taken, which type is "short int *".

 dnl We probably ought to introduce a type for confl.
 dnl We probably ought to introduce a type for confl.

-[static const short yyconfl[] =
+[static const short int yyconfl[] =

 {
   ]b4_conflicting_rules[
 };
 {
   ]b4_conflicting_rules[
 };


@@ -370,57 +404,70 @@ static const ]b4_int_type_for([b4_check])[ yycheck[] =
   ]b4_check[
 };
 
   ]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[
+};
+

 \f
 \f

-/* The user can define YYPARSE_PARAM as the name of an argument to be passed
-   into yyparse.  The argument should have type void *.
-   It should actually point to an object.
-   Grammar actions can access the variable by casting it
-   to the proper pointer type.  */
-
-#ifdef YYPARSE_PARAM
-#  define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
-#else /* !YYPARSE_PARAM */
-# define YYPARSE_PARAM_ARG void
-#endif /* !YYPARSE_PARAM */
-
-/* Prevent warning if -Wstrict-prototypes.  */
-#ifdef __GNUC__
-# ifdef YYPARSE_PARAM
-int yyparse (void *);
-# else
-int yyparse (void);
-# endif
-#endif
+/* Prevent warning if -Wmissing-prototypes.  */
+]b4_c_ansi_function_decl([yyparse], [int], b4_parse_param)[

 
 /* Error token number */
 #define YYTERROR 1
 
 
 /* Error token number */
 #define YYTERROR 1
 

-/* YYLLOC_DEFAULT -- Compute the default location (before the actions
-   are run).  */
-
-#define YYRHSLOC(yyRhs,YYK) (yyRhs[YYK].yystate.yyloc)
+/* 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_location_if([[
+#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)                               \
+    do                                                                 \
+      if (N)                                                           \
+       {                                                               \
+         (Current).first_line   = YYRHSLOC(Rhs, 1).first_line;         \
+         (Current).first_column = YYRHSLOC(Rhs, 1).first_column;       \
+         (Current).last_line    = YYRHSLOC(Rhs, N).last_line;          \
+         (Current).last_column  = YYRHSLOC(Rhs, N).last_column;        \
+       }                                                               \
+      else                                                             \
+       {                                                               \
+         (Current).first_line   = (Current).last_line   =              \
+           YYRHSLOC(Rhs, 0).last_line;                                 \
+         (Current).first_column = (Current).last_column =              \
+           YYRHSLOC(Rhs, 0).last_column;                               \
+       }                                                               \
+    while (0)
+
+/* YY_LOCATION_PRINT -- Print the location on the stream.
+   This macro was not mandated originally: define only if we know
+   we won't break user code: when these are the locations we know.  */
+
+# define YY_LOCATION_PRINT(File, Loc)                  \
+    fprintf (File, "%d.%d-%d.%d",                      \
+             (Loc).first_line, (Loc).first_column,     \
+             (Loc).last_line,  (Loc).last_column)
+#endif
+]],[

 #ifndef YYLLOC_DEFAULT
 #ifndef YYLLOC_DEFAULT

-# define YYLLOC_DEFAULT(yyCurrent, yyRhs, YYN)                 \
-  yyCurrent.first_line   = YYRHSLOC(yyRhs,1).first_line;       \
-  yyCurrent.first_column = YYRHSLOC(yyRhs,1).first_column;     \
-  yyCurrent.last_line    = YYRHSLOC(yyRhs,YYN).last_line;      \
-  yyCurrent.last_column  = YYRHSLOC(yyRhs,YYN).last_column;
+# define YYLLOC_DEFAULT(Current, Rhs, N) ((void) 0)
+#endif
+])[
+
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)

 #endif
 
 #endif
 

+

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

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

 
 ]b4_pure_if(
 [
 
 ]b4_pure_if(
 [

-#ifdef YYLEX_PARAM
-# define YYLEX yylex (yylvalp, b4_location_if([yyllocp, ])YYLEX_PARAM)
-#else
-# define YYLEX yylex (yylvalp[]b4_location_if([, yyllocp]))
-#endif],
-[#define YYLEX  yylex ()])
-
-b4_pure_if(
-[

 #undef yynerrs
 #define yynerrs (yystack->yyerrcnt)
 #undef yychar
 #undef yynerrs
 #define yynerrs (yystack->yyerrcnt)
 #undef yychar


@@ -438,7 +485,7 @@ static const int YYEMPTY = -2;
 typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
 
 #define YYCHK(YYE)                                                          \
 typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
 
 #define YYCHK(YYE)                                                          \

-   do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; }              \
+   do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; }      \

    while (0)
 
 #if YYDEBUG
    while (0)
 
 #if YYDEBUG


@@ -452,17 +499,34 @@ do {                                              \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 } while (0)
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 } while (0)

+
+]b4_yysymprint_generate([b4_c_ansi_function_def])[
+
+# 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)
+

 /* 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 /* !YYDEBUG */

-  /* Avoid empty `if' bodies.  */
-# define YYDPRINTF(Args)  {}
+
+# define YYDPRINTF(Args)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+

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

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

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


@@ -477,7 +541,7 @@ int yydebug;
 #endif
 
 #ifndef YYMAXDEPTH
 #endif
 
 #ifndef YYMAXDEPTH

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

 #endif
 
 /* Minimum number of free items on the stack allowed after an
 #endif
 
 /* Minimum number of free items on the stack allowed after an


@@ -487,8 +551,10 @@ int yydebug;
    properly redirected to new data. */
 #define YYHEADROOM 2
 
    properly redirected to new data. */
 #define YYHEADROOM 2
 

-#if ! defined (YYSTACKEXPANDABLE) \
-    && (! defined (__cplusplus) || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))
+#if (! defined (YYSTACKEXPANDABLE) \
+     && (! defined (__cplusplus) \
+        || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
+            && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))

 #define YYSTACKEXPANDABLE 1
 #else
 #define YYSTACKEXPANDABLE 0
 #define YYSTACKEXPANDABLE 1
 #else
 #define YYSTACKEXPANDABLE 0


@@ -501,10 +567,10 @@ typedef int yyStateNum;
 typedef int yyRuleNum;
 
 /** Grammar symbol */
 typedef int yyRuleNum;
 
 /** Grammar symbol */

-typedef short yySymbol;
+typedef short int yySymbol;

 
 /** Item references, as in LALR(1) machine */
 
 /** Item references, as in LALR(1) machine */

-typedef short yyItemNum;
+typedef short int yyItemNum;

 
 typedef struct yyGLRState yyGLRState;
 typedef struct yySemanticOption yySemanticOption;
 
 typedef struct yyGLRState yyGLRState;
 typedef struct yySemanticOption yySemanticOption;


@@ -513,8 +579,8 @@ typedef struct yyGLRStack yyGLRStack;
 typedef struct yyGLRStateSet yyGLRStateSet;
 
 struct yyGLRState {
 typedef struct yyGLRStateSet yyGLRStateSet;
 
 struct yyGLRState {

-  bool yyisState;
-  bool yyresolved;
+  yybool yyisState;
+  yybool yyresolved;

   yyStateNum yylrState;
   yyGLRState* yypred;
   size_t yyposn;
   yyStateNum yylrState;
   yyGLRState* yypred;
   size_t yyposn;


@@ -531,7 +597,7 @@ struct yyGLRStateSet {
 };
 
 struct yySemanticOption {
 };
 
 struct yySemanticOption {

-  bool yyisState;
+  yybool yyisState;

   yyRuleNum yyrule;
   yyGLRState* yystate;
   yySemanticOption* yynext;
   yyRuleNum yyrule;
   yyGLRState* yystate;
   yySemanticOption* yynext;


@@ -545,6 +611,8 @@ union yyGLRStackItem {
 struct yyGLRStack {
   int yyerrflag;
   int yyerrState;
 struct yyGLRStack {
   int yyerrflag;
   int yyerrState;

+]b4_location_if([[  /* To compute the location of the error token.  */
+  yyGLRStackItem yyerror_range[3];]])[

 ]b4_pure_if(
 [
   int yyerrcnt;
 ]b4_pure_if(
 [
   int yyerrcnt;


@@ -561,20 +629,20 @@ struct yyGLRStack {
 };
 
 static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize);
 };
 
 static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize);

-static void yyexpandGLRStack (yyGLRStack* yystack);
+static void yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[);

 static void yyfreeGLRStack (yyGLRStack* yystack);
 
 static void
 static void yyfreeGLRStack (yyGLRStack* yystack);
 
 static void

-yyFail (yyGLRStack* yystack, const char* yyformat, ...)
+yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yyformat, ...)

 {
 {

+  yystack->yyerrflag = 1;

   if (yyformat != NULL)
     {
       char yymsg[256];
       va_list yyap;
       va_start (yyap, yyformat);
   if (yyformat != NULL)
     {
       char yymsg[256];
       va_list yyap;
       va_start (yyap, yyformat);

-      yystack->yyerrflag = 1;

       vsprintf (yymsg, yyformat, yyap);
       vsprintf (yymsg, yyformat, yyap);

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

     }
   longjmp (yystack->yyexception_buffer, 1);
 }
     }
   longjmp (yystack->yyexception_buffer, 1);
 }


@@ -585,34 +653,65 @@ yyFail (yyGLRStack* yystack, const char* yyformat, ...)
 static inline const char*
 yytokenName (yySymbol yytoken)
 {
 static inline const char*
 yytokenName (yySymbol yytoken)
 {

+  if (yytoken == YYEMPTY)
+    return "";
+

   return yytname[yytoken];
 }
 #endif
 
   return yytname[yytoken];
 }
 #endif
 

+/** Fill in YYVSP[YYLOW1 .. YYLOW0-1] from the chain of states starting
+ *  at YYVSP[YYLOW0].yystate.yypred.  Leaves YYVSP[YYLOW1].yystate.yypred
+ *  containing the pointer to the next state in the chain. Assumes
+ *  YYLOW1 < YYLOW0.  */
+static void yyfillin (yyGLRStackItem *, int, int) ATTRIBUTE_UNUSED;
+static void
+yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1)
+{
+  yyGLRState* s;
+  int i;
+  s = yyvsp[yylow0].yystate.yypred;
+  for (i = yylow0-1; i >= yylow1; i -= 1)
+    {
+      YYASSERT (s->yyresolved);
+      yyvsp[i].yystate.yyresolved = yytrue;
+      yyvsp[i].yystate.yysemantics.yysval = s->yysemantics.yysval;
+      yyvsp[i].yystate.yyloc = s->yyloc;
+      s = yyvsp[i].yystate.yypred = s->yypred;
+    }
+}
+
+/* Do nothing if YYNORMAL or if *YYLOW <= YYLOW1.  Otherwise, fill in
+   YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1.
+   For convenience, always return YYLOW1.  */
+static inline int yyfill (yyGLRStackItem *, int *, int, yybool)
+     ATTRIBUTE_UNUSED;
+static inline int
+yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal)
+{
+  if (!yynormal && yylow1 < *yylow)
+    {
+      yyfillin (yyvsp, *yylow, yylow1);
+      *yylow = yylow1;
+    }
+  return yylow1;
+}
+

 /** Perform user action for rule number YYN, with RHS length YYRHSLEN,
  *  and top stack item YYVSP.  YYLVALP points to place to put semantic
  *  value ($$), and yylocp points to place for location information
 /** Perform user action for rule number YYN, with RHS length YYRHSLEN,
  *  and top stack item YYVSP.  YYLVALP points to place to put semantic
  *  value ($$), and yylocp points to place for location information

- *  (@$). Returns yyok for normal return, yyaccept for YYACCEPT,
+ *  (@@$). Returns yyok for normal return, yyaccept for YYACCEPT,

  *  yyerr for YYERROR, yyabort for YYABORT. */
 static YYRESULTTAG
 yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
  *  yyerr for YYERROR, yyabort for YYABORT. */
 static YYRESULTTAG
 yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,

-             YYSTYPE* yyvalp, YYLTYPE* yylocp, yyGLRStack* yystack)
+             YYSTYPE* yyvalp,
+             YYLTYPE* yylocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[,
+             yyGLRStack* yystack
+              ]b4_user_formals[)

 {
 {

-  /* Avoid `unused' warnings in there are no $n. */
-  (void) yystack;
+  yybool yynormal ATTRIBUTE_UNUSED = (yystack->yysplitPoint == NULL);
+  int yylow;

 
 

-  if (yyrhslen == 0)
-    {
-      *yyvalp = yyval_default;
-      *yylocp = yyloc_default;
-    }
-  else
-    {
-      *yyvalp = yyvsp[1-yyrhslen].yystate.yysemantics.yysval;
-      *yylocp = yyvsp[1-yyrhslen].yystate.yyloc;
-    }
-# undef yyval
-# define yyval (*yyvalp)

 # undef yyerrok
 # define yyerrok (yystack->yyerrState = 0)
 # undef YYACCEPT
 # undef yyerrok
 # define yyerrok (yystack->yyerrState = 0)
 # undef YYACCEPT


@@ -620,26 +719,31 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 # undef YYABORT
 # define YYABORT return yyabort
 # undef YYERROR
 # undef YYABORT
 # define YYABORT return yyabort
 # undef YYERROR

-# define YYERROR return yyerr
+# define YYERROR return yyerrok, yyerr

 # undef YYRECOVERING
 # define YYRECOVERING (yystack->yyerrState != 0)
 # undef yyclearin
 # define yyclearin (yychar = *(yystack->yytokenp) = YYEMPTY)
 # undef YYRECOVERING
 # define YYRECOVERING (yystack->yyerrState != 0)
 # undef yyclearin
 # define yyclearin (yychar = *(yystack->yytokenp) = YYEMPTY)

+# undef YYFILL
+# define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal)

 # undef YYBACKUP
 # define YYBACKUP(Token, Value)                                                     \
 # undef YYBACKUP
 # define YYBACKUP(Token, Value)                                                     \

-  do {                                                                      \
-    yyerror ("syntax error: cannot back up");                               \
-    YYERROR;                                                                \
-  } while (0)
+  return yyerror (]b4_yyerror_args["syntax error: cannot back up"),         \
+        yyerrok, yyerr

 
 

+  yylow = 1;
+  if (yyrhslen == 0)
+    *yyvalp = yyval_default;
+  else
+    *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
+  YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);

 ]
 ]

-   switch (yyn)
-     {
-       b4_actions
-     }
+  switch (yyn)
+    {
+      b4_actions
+    }

 
 

-   return yyok;
-# undef yyval
+  return yyok;

 # undef yyerrok
 # undef YYABORT
 # undef YYACCEPT
 # undef yyerrok
 # undef YYABORT
 # undef YYACCEPT


@@ -647,16 +751,15 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 # undef YYBACKUP
 # undef yyclearin
 # undef YYRECOVERING
 # undef YYBACKUP
 # undef yyclearin
 # undef YYRECOVERING

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

 }
 \f
 
 }
 \f
 

-static YYSTYPE
+static void

 yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
 {
 yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
 {

-  YYSTYPE yyval = *yy0;
-  /* `Use' the arguments. */
+  /* `Use' the arguments.  */

   (void) yy0;
   (void) yy1;
 
   (void) yy0;
   (void) yy1;
 


@@ -664,10 +767,11 @@ yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
     {
       b4_mergers
     }
     {
       b4_mergers
     }

-  return yyval;

 }
 [
 }
 [

-                               /* Bison grammar-table manipulation */
+                             /* Bison grammar-table manipulation.  */
+
+]b4_yydestruct_generate([b4_c_ansi_function_def])[

 
 /** Number of symbols composing the right hand side of rule #RULE. */
 static inline int
 
 /** Number of symbols composing the right hand side of rule #RULE. */
 static inline int


@@ -683,12 +787,17 @@ yylhsNonterm (yyRuleNum yyrule)
   return yyr1[yyrule];
 }
 
   return yyr1[yyrule];
 }
 

+#define yyis_pact_ninf(yystate) \
+  ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), 1,
+        0,
+        ((yystate) == YYPACT_NINF))[
+

 /** True iff LR state STATE has only a default reduction (regardless
  *  of token). */
 /** True iff LR state STATE has only a default reduction (regardless
  *  of token). */

-static inline bool
+static inline yybool

 yyisDefaultedState (yyStateNum yystate)
 {
 yyisDefaultedState (yyStateNum yystate)
 {

-  return yypact[yystate] == YYPACT_NINF;
+  return yyis_pact_ninf (yypact[yystate]);

 }
 
 /** The default reduction for STATE, assuming it has one. */
 }
 
 /** The default reduction for STATE, assuming it has one. */


@@ -698,6 +807,11 @@ yydefaultAction (yyStateNum yystate)
   return yydefact[yystate];
 }
 
   return yydefact[yystate];
 }
 

+#define yyis_table_ninf(yytable_value) \
+  ]m4_if(m4_eval(b4_table_ninf < b4_table_min), 1,
+        0,
+        ((yytable_value) == YYTABLE_NINF))[
+

 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means
  *    R < 0:  Reduce on rule -R.
 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means
  *    R < 0:  Reduce on rule -R.


@@ -708,7 +822,7 @@ yydefaultAction (yyStateNum yystate)
  */
 static inline void
 yygetLRActions (yyStateNum yystate, int yytoken,
  */
 static inline void
 yygetLRActions (yyStateNum yystate, int yytoken,

-               int* yyaction, const short** yyconflicts)
+               int* yyaction, const short int** yyconflicts)

 {
   int yyindex = yypact[yystate] + yytoken;
   if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
 {
   int yyindex = yypact[yystate] + yytoken;
   if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)


@@ -716,7 +830,7 @@ yygetLRActions (yyStateNum yystate, int yytoken,
       *yyaction = -yydefact[yystate];
       *yyconflicts = yyconfl;
     }
       *yyaction = -yydefact[yystate];
       *yyconflicts = yyconfl;
     }

-  else if (yytable[yyindex] != YYTABLE_NINF)
+  else if (! yyis_table_ninf (yytable[yyindex]))

     {
       *yyaction = yytable[yyindex];
       *yyconflicts = yyconfl + yyconflp[yyindex];
     {
       *yyaction = yytable[yyindex];
       *yyconflicts = yyconfl + yyconflp[yyindex];


@@ -739,13 +853,13 @@ yyLRgotoState (yyStateNum yystate, yySymbol yylhs)
     return yydefgoto[yylhs - YYNTOKENS];
 }
 
     return yydefgoto[yylhs - YYNTOKENS];
 }
 

-static inline bool
+static inline yybool

 yyisShiftAction (int yyaction)
 {
 yyisShiftAction (int yyaction)
 {

-  return yyaction > 0;
+  return 0 < yyaction;

 }
 
 }
 

-static inline bool
+static inline yybool

 yyisErrorAction (int yyaction)
 {
   return yyaction == 0;
 yyisErrorAction (int yyaction)
 {
   return yyaction == 0;


@@ -753,17 +867,9 @@ yyisErrorAction (int yyaction)
 
                                /* GLRStates */
 
 
                                /* GLRStates */
 

-/** True iff the semantic value of the edge leading to STATE is
- *  resolved. */
-static inline bool
-yyhasResolvedValue (yyGLRState* yystate)
-{
-  return yystate->yyresolved;
-}
-

 static void
 yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate,
 static void
 yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate,

-                    yyGLRState* rhs, yyRuleNum yyrule)
+                    yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[)

 {
   yySemanticOption* yynewItem;
   yynewItem = &yystack->yynextFree->yyoption;
 {
   yySemanticOption* yynewItem;
   yynewItem = &yystack->yynextFree->yyoption;


@@ -775,7 +881,7 @@ yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate,
   yynewItem->yynext = yystate->yysemantics.yyfirstVal;
   yystate->yysemantics.yyfirstVal = yynewItem;
   if (yystack->yyspaceLeft < YYHEADROOM)
   yynewItem->yynext = yystate->yysemantics.yyfirstVal;
   yystate->yysemantics.yyfirstVal = yynewItem;
   if (yystack->yyspaceLeft < YYHEADROOM)

-    yyexpandGLRStack (yystack);
+    yyexpandGLRStack (yystack]b4_pure_args[);

 }
 
                                /* GLRStacks */
 }
 
                                /* GLRStacks */


@@ -786,13 +892,13 @@ yyinitStateSet (yyGLRStateSet* yyset)
 {
   yyset->yysize = 1;
   yyset->yycapacity = 16;
 {
   yyset->yysize = 1;
   yyset->yycapacity = 16;

-  yyset->yystates = (yyGLRState**) malloc (16 * sizeof (yyset->yystates[0]));
+  yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]);

   yyset->yystates[0] = NULL;
 }
 
 static void yyfreeStateSet (yyGLRStateSet* yyset)
 {
   yyset->yystates[0] = NULL;
 }
 
 static void yyfreeStateSet (yyGLRStateSet* yyset)
 {

-  free (yyset->yystates);
+  YYFREE (yyset->yystates);

 }
 
 /** Initialize STACK to a single empty stack, with total maximum
 }
 
 /** Initialize STACK to a single empty stack, with total maximum


@@ -805,7 +911,7 @@ yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
   yynerrs = 0;
   yystack->yyspaceLeft = yysize;
   yystack->yynextFree = yystack->yyitems =
   yynerrs = 0;
   yystack->yyspaceLeft = yysize;
   yystack->yynextFree = yystack->yyitems =

-    (yyGLRStackItem*) malloc (yysize * sizeof (yystack->yynextFree[0]));
+    (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]);

   yystack->yysplitPoint = NULL;
   yystack->yylastDeleted = NULL;
   yyinitStateSet (&yystack->yytops);
   yystack->yysplitPoint = NULL;
   yystack->yylastDeleted = NULL;
   yyinitStateSet (&yystack->yytops);


@@ -820,7 +926,7 @@ yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
     allocation, so that we can avoid having external pointers exist
     across an allocation. */
 static void
     allocation, so that we can avoid having external pointers exist
     across an allocation. */
 static void

-yyexpandGLRStack (yyGLRStack* yystack)
+yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[)

 {
 #if YYSTACKEXPANDABLE
   yyGLRStack yynewStack;
 {
 #if YYSTACKEXPANDABLE
   yyGLRStack yynewStack;


@@ -828,18 +934,18 @@ yyexpandGLRStack (yyGLRStack* yystack)
   size_t yysize, yynewSize;
   size_t yyn;
   yysize = yystack->yynextFree - yystack->yyitems;
   size_t yysize, yynewSize;
   size_t yyn;
   yysize = yystack->yynextFree - yystack->yyitems;

-  if (yysize >= YYMAXDEPTH)
-    yyFail (yystack, "parsing stack overflow (%d items)", yysize);
+  if (YYMAXDEPTH <= yysize)
+    yyFail (yystack][]b4_pure_args[, "parser stack overflow");

   yynewSize = 2*yysize;
   yynewSize = 2*yysize;

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

     yynewSize = YYMAXDEPTH;
   yyinitGLRStack (&yynewStack, yynewSize);
   for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize;
     yynewSize = YYMAXDEPTH;
   yyinitGLRStack (&yynewStack, yynewSize);
   for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize;

-       yyn > 0;
+       0 < yyn;

        yyn -= 1, yyp0 += 1, yyp1 += 1)
     {
       *yyp1 = *yyp0;
        yyn -= 1, yyp0 += 1, yyp1 += 1)
     {
       *yyp1 = *yyp0;

-      if (*(bool*) yyp0)
+      if (*(yybool *) yyp0)

        {
          yyGLRState* yys0 = &yyp0->yystate;
          yyGLRState* yys1 = &yyp1->yystate;
        {
          yyGLRState* yys0 = &yyp0->yystate;
          yyGLRState* yys1 = &yyp1->yystate;


@@ -869,22 +975,21 @@ yyexpandGLRStack (yyGLRStack* yystack)
       yystack->yytops.yystates[yyn] =
        YYRELOC (yystack->yyitems, yynewStack.yyitems,
                 yystack->yytops.yystates[yyn], yystate);
       yystack->yytops.yystates[yyn] =
        YYRELOC (yystack->yyitems, yynewStack.yyitems,
                 yystack->yytops.yystates[yyn], yystate);

-  free (yystack->yyitems);
+  YYFREE (yystack->yyitems);

   yystack->yyitems = yynewStack.yyitems;
   yystack->yynextFree = yynewStack.yynextFree + yysize;
   yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize;
 
 #else
 
   yystack->yyitems = yynewStack.yyitems;
   yystack->yynextFree = yynewStack.yynextFree + yysize;
   yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize;
 
 #else
 

-  yyFail (yystack, "parsing stack overflow (%d items)", yysize);
-
+  yyFail (yystack][]b4_pure_args[, "parser stack overflow");

 #endif
 }
 
 static void
 yyfreeGLRStack (yyGLRStack* yystack)
 {
 #endif
 }
 
 static void
 yyfreeGLRStack (yyGLRStack* yystack)
 {

-  free (yystack->yyitems);
+  YYFREE (yystack->yyitems);

   yyfreeStateSet (&yystack->yytops);
 }
 
   yyfreeStateSet (&yystack->yytops);
 }
 


@@ -931,14 +1036,19 @@ yyremoveDeletes (yyGLRStack* yystack)
       if (yystack->yytops.yystates[yyi] == NULL)
        {
          if (yyi == yyj)
       if (yystack->yytops.yystates[yyi] == NULL)
        {
          if (yyi == yyj)

-           YYDPRINTF ((stderr, "Removing dead stacks.\n"));
+           {
+             YYDPRINTF ((stderr, "Removing dead stacks.\n"));
+           }

          yystack->yytops.yysize -= 1;
        }
       else
        {
          yystack->yytops.yystates[yyj] = yystack->yytops.yystates[yyi];
          if (yyj != yyi)
          yystack->yytops.yysize -= 1;
        }
       else
        {
          yystack->yytops.yystates[yyj] = yystack->yytops.yystates[yyi];
          if (yyj != yyi)

-           YYDPRINTF ((stderr, "Rename stack %d -> %d.\n", yyi, yyj));
+           {
+             YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n",
+                         (unsigned long int) yyi, (unsigned long int) yyj));
+           }

          yyj += 1;
        }
       yyi += 1;
          yyj += 1;
        }
       yyi += 1;


@@ -949,7 +1059,7 @@ yyremoveDeletes (yyGLRStack* yystack)
  * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
 static inline void
 yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn,
  * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
 static inline void
 yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn,

-           YYSTYPE yysval, YYLTYPE* yylocp)
+           YYSTYPE yysval, YYLTYPE* yylocp]b4_user_formals[)

 {
   yyGLRStackItem* yynewItem;
 
 {
   yyGLRStackItem* yynewItem;
 


@@ -965,15 +1075,15 @@ yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn,
   yynewItem->yystate.yysemantics.yysval = yysval;
   yynewItem->yystate.yyloc = *yylocp;
   if (yystack->yyspaceLeft < YYHEADROOM)
   yynewItem->yystate.yysemantics.yysval = yysval;
   yynewItem->yystate.yyloc = *yylocp;
   if (yystack->yyspaceLeft < YYHEADROOM)

-    yyexpandGLRStack (yystack);
+    yyexpandGLRStack (yystack]b4_pure_args[);

 }
 
 }
 

-/** Shift to a new state on stack #K of STACK, to a new state
- *  corresponding to LR state LRSTATE, at input position POSN, with
- * the (unresolved) semantic value of RHS under the action for RULE. */
+/** Shift stack #K of YYSTACK, to a new state corresponding to LR
+ *  state YYLRSTATE, at input position YYPOSN, with the (unresolved)
+ *  semantic value of YYRHS under the action for YYRULE. */

 static inline void
 yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState,
 static inline void
 yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState,

-                size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule)
+                size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[)

 {
   yyGLRStackItem* yynewItem;
 
 {
   yyGLRStackItem* yynewItem;
 


@@ -987,7 +1097,7 @@ yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState,
   yystack->yytops.yystates[yyk] = &yynewItem->yystate;
   yystack->yynextFree += 1;
   yystack->yyspaceLeft -= 1;
   yystack->yytops.yystates[yyk] = &yynewItem->yystate;
   yystack->yynextFree += 1;
   yystack->yyspaceLeft -= 1;

-  yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule);
+  yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule]b4_pure_args[);

 }
 
 /** Pop the symbols consumed by reduction #RULE from the top of stack
 }
 
 /** Pop the symbols consumed by reduction #RULE from the top of stack


@@ -996,9 +1106,9 @@ yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState,
  *  have been previously resolved. Set *VALP to the resulting value,
  *  and *LOCP to the computed location (if any).  Return value is as
  *  for userAction. */
  *  have been previously resolved. Set *VALP to the resulting value,
  *  and *LOCP to the computed location (if any).  Return value is as
  *  for userAction. */

-static inline int
+static inline YYRESULTTAG

 yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,
 yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,

-           YYSTYPE* yyvalp, YYLTYPE* yylocp)
+           YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)

 {
   int yynrhs = yyrhsLength (yyrule);
 
 {
   int yynrhs = yyrhsLength (yyrule);
 


@@ -1006,52 +1116,59 @@ yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,
     {
       /* Standard special case: single stack. */
       yyGLRStackItem* rhs = (yyGLRStackItem*) yystack->yytops.yystates[yyk];
     {
       /* Standard special case: single stack. */
       yyGLRStackItem* rhs = (yyGLRStackItem*) yystack->yytops.yystates[yyk];

-      assert (yyk == 0);
+      YYASSERT (yyk == 0);

       yystack->yynextFree -= yynrhs;
       yystack->yyspaceLeft += yynrhs;
       yystack->yytops.yystates[0] = & yystack->yynextFree[-1].yystate;
       yystack->yynextFree -= yynrhs;
       yystack->yyspaceLeft += yynrhs;
       yystack->yytops.yystates[0] = & yystack->yynextFree[-1].yystate;

-      if (yynrhs == 0)
-       {
-         *yyvalp = yyval_default;
-         *yylocp = yyloc_default;
-       }
-      else
-       {
-         *yyvalp = rhs[1-yynrhs].yystate.yysemantics.yysval;
-         *yylocp = rhs[1-yynrhs].yystate.yyloc;
-       }
-      return yyuserAction (yyrule, yynrhs, rhs, yyvalp, yylocp, yystack);
+      return yyuserAction (yyrule, yynrhs, rhs,
+                          yyvalp, yylocp, yystack]b4_user_args[);

     }
   else
     {
       int yyi;
       yyGLRState* yys;
     }
   else
     {
       int yyi;
       yyGLRState* yys;

-      yyGLRStackItem yyrhsVals[YYMAXRHS];
-      for (yyi = yynrhs-1, yys = yystack->yytops.yystates[yyk]; yyi >= 0;
-          yyi -= 1, yys = yys->yypred)
+      yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
+      yys = yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred
+       = yystack->yytops.yystates[yyk];
+      for (yyi = 0; yyi < yynrhs; yyi += 1)

        {
        {

-         assert (yys->yypred != NULL);
-         yyrhsVals[yyi].yystate.yyresolved = yytrue;
-         yyrhsVals[yyi].yystate.yysemantics.yysval = yys->yysemantics.yysval;
-         yyrhsVals[yyi].yystate.yyloc = yys->yyloc;
+         yys = yys->yypred;
+         YYASSERT (yys);

        }
       yyupdateSplit (yystack, yys);
       yystack->yytops.yystates[yyk] = yys;
        }
       yyupdateSplit (yystack, yys);
       yystack->yytops.yystates[yyk] = yys;

-      if (yynrhs == 0)
-       {
-         *yyvalp = yyval_default;
-         *yylocp = yyloc_default;
-       }
-      else
-       {
-         *yyvalp = yyrhsVals[0].yystate.yysemantics.yysval;
-         *yylocp = yyrhsVals[0].yystate.yyloc;
-       }
-      return yyuserAction (yyrule, yynrhs, yyrhsVals + (yynrhs-1),
-                          yyvalp, yylocp, yystack);
+      return yyuserAction (yyrule, yynrhs, yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
+                          yyvalp, yylocp, yystack]b4_user_args[);

     }
 }
 
     }
 }
 

+#if !YYDEBUG
+# define YY_REDUCE_PRINT(K, Rule)
+#else
+# define YY_REDUCE_PRINT(K, Rule)      \
+do {                                   \
+  if (yydebug)                         \
+    yy_reduce_print (K, Rule);         \
+} while (0)
+
+/*----------------------------------------------------------.
+| Report that the RULE is going to be reduced on stack #K.  |
+`----------------------------------------------------------*/
+
+static inline void
+yy_reduce_print (size_t yyk, yyRuleNum yyrule)
+{
+  int yyi;
+  YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu), ",
+            (unsigned long int) yyk, yyrule - 1,
+            (unsigned long int) yyrline[yyrule]);
+  /* Print the symbols being reduced, and their result.  */
+  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
+    YYFPRINTF (stderr, "%s ", yytokenName (yyrhs[yyi]));
+  YYFPRINTF (stderr, "-> %s\n", yytokenName (yyr1[yyrule]));
+}
+#endif
+

 /** Pop items off stack #K of STACK according to grammar rule RULE,
  *  and push back on the resulting nonterminal symbol.  Perform the
  *  semantic action associated with RULE and store its value with the
 /** Pop items off stack #K of STACK according to grammar rule RULE,
  *  and push back on the resulting nonterminal symbol.  Perform the
  *  semantic action associated with RULE and store its value with the


@@ -1065,7 +1182,7 @@ yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,
  */
 static inline YYRESULTTAG
 yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
  */
 static inline YYRESULTTAG
 yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,

-             bool yyforceEval)
+             yybool yyforceEval]b4_pure_formals[)

 {
   size_t yyposn = yystack->yytops.yystates[yyk]->yyposn;
 
 {
   size_t yyposn = yystack->yytops.yystates[yyk]->yyposn;
 


@@ -1074,25 +1191,12 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
       YYSTYPE yysval;
       YYLTYPE yyloc;
 
       YYSTYPE yysval;
       YYLTYPE yyloc;
 

-#if YYDEBUG
-      if (yydebug)
-       {
-         int yyi;
-         YYDPRINTF ((stderr, "Reducing stack %d by rule %d (line %d),",
-                     yyk, yyrule - 1, yyrline[yyrule]));
-         /* Print the symbols being reduced, and their result.  */
-         for (yyi = yyprhs[yyrule]; yyrhs[yyi] >= 0; yyi++)
-           YYFPRINTF (stderr, "%s ", yytokenName (yyrhs[yyi]));
-         YYFPRINTF (stderr, " -> %s\n", yytokenName (yyr1[yyrule]));
-       }
-#endif
-      YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc));
+      YY_REDUCE_PRINT (yyk, yyrule);
+      YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc]b4_user_args[));

       yyglrShift (yystack, yyk,
                  yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState,
                                 yylhsNonterm (yyrule)),
       yyglrShift (yystack, yyk,
                  yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState,
                                 yylhsNonterm (yyrule)),

-               yyposn, yysval, &yyloc);
-      YYDPRINTF ((stderr, "Stack %d entering state %d\n",
-                 yyk, yystack->yytops.yystates[yyk]->yylrState));
+                 yyposn, yysval, &yyloc]b4_user_args[);

     }
   else
     {
     }
   else
     {


@@ -1102,17 +1206,16 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
       yyStateNum yynewLRState;
 
       for (yys = yystack->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);
       yyStateNum yynewLRState;
 
       for (yys = yystack->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);

-          yyn > 0; yyn -= 1)
+          0 < yyn; yyn -= 1)

        {
          yys = yys->yypred;
        {
          yys = yys->yypred;

-         assert (yys != NULL);
+         YYASSERT (yys);

        }
       yyupdateSplit (yystack, yys);
       yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule));
       YYDPRINTF ((stderr,
        }
       yyupdateSplit (yystack, yys);
       yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule));
       YYDPRINTF ((stderr,

-                 "Reduced stack %d by rule #%d; action deferred. "
-                 "Now in state %d.\n",
-                 yyk, yyrule-1, yynewLRState));
+                 "Reduced stack %lu by rule #%d; action deferred. Now in state %d.\n",
+                 (unsigned long int) yyk, yyrule - 1, yynewLRState));

       for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
        if (yyi != yyk && yystack->yytops.yystates[yyi] != NULL)
          {
       for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
        if (yyi != yyk && yystack->yytops.yystates[yyi] != NULL)
          {


@@ -1122,19 +1225,20 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
              {
                if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
                  {
              {
                if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
                  {

-                   yyaddDeferredAction (yystack, yyp, yys0, yyrule);
+                   yyaddDeferredAction (yystack, yyp, yys0, yyrule]b4_pure_args[);

                    yymarkStackDeleted (yystack, yyk);
                    yymarkStackDeleted (yystack, yyk);

-                   YYDPRINTF ((stderr, "Merging stack %d into stack %d.\n",
-                               yyk, yyi));
-                   return 0;
+                   YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n",
+                               (unsigned long int) yyk,
+                               (unsigned long int) yyi));
+                   return yyok;

                  }
                yyp = yyp->yypred;
              }
          }
       yystack->yytops.yystates[yyk] = yys;
                  }
                yyp = yyp->yypred;
              }
          }
       yystack->yytops.yystates[yyk] = yys;

-      yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule);
+      yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule]b4_pure_args[);

     }
     }

-  return 0;
+  return yyok;

 }
 
 static int
 }
 
 static int


@@ -1142,16 +1246,16 @@ yysplitStack (yyGLRStack* yystack, int yyk)
 {
   if (yystack->yysplitPoint == NULL)
     {
 {
   if (yystack->yysplitPoint == NULL)
     {

-      assert (yyk == 0);
+      YYASSERT (yyk == 0);

       yystack->yysplitPoint = yystack->yytops.yystates[yyk];
     }
   if (yystack->yytops.yysize >= yystack->yytops.yycapacity)
     {
       yystack->yytops.yycapacity *= 2;
       yystack->yytops.yystates =
       yystack->yysplitPoint = yystack->yytops.yystates[yyk];
     }
   if (yystack->yytops.yysize >= yystack->yytops.yycapacity)
     {
       yystack->yytops.yycapacity *= 2;
       yystack->yytops.yystates =

-       (yyGLRState**) realloc (yystack->yytops.yystates,
-                               yystack->yytops.yycapacity
-                               * sizeof (yyGLRState*));
+       (yyGLRState**) YYREALLOC (yystack->yytops.yystates,
+                                 (yystack->yytops.yycapacity
+                                  * sizeof yystack->yytops.yystates[0]));

     }
   yystack->yytops.yystates[yystack->yytops.yysize]
     = yystack->yytops.yystates[yyk];
     }
   yystack->yytops.yystates[yystack->yytops.yysize]
     = yystack->yytops.yystates[yyk];


@@ -1162,7 +1266,7 @@ yysplitStack (yyGLRStack* yystack, int yyk)
 /** True iff Y0 and Y1 represent identical options at the top level.
  *  That is, they represent the same rule applied to RHS symbols
  *  that produce the same terminal symbols. */
 /** True iff Y0 and Y1 represent identical options at the top level.
  *  That is, they represent the same rule applied to RHS symbols
  *  that produce the same terminal symbols. */

-static bool
+static yybool

 yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {
   if (yyy0->yyrule == yyy1->yyrule)
 yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {
   if (yyy0->yyrule == yyy1->yyrule)


@@ -1200,7 +1304,7 @@ yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
        yySemanticOption* yyz;
        for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL;
             yyz = yyz->yynext)
        yySemanticOption* yyz;
        for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL;
             yyz = yyz->yynext)

-         ;
+         continue;

        yyz->yynext = yys1->yysemantics.yyfirstVal;
       }
 }
        yyz->yynext = yys1->yysemantics.yyfirstVal;
       }
 }


@@ -1225,29 +1329,30 @@ yypreference (yySemanticOption* y0, yySemanticOption* y1)
     return 0;
   if (p0 < p1)
     return 3;
     return 0;
   if (p0 < p1)
     return 3;

-  if (p0 > p1)
+  if (p1 < p0)

     return 2;
   return 0;
 }
 
 static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList,
                                   yyGLRStack* yystack, YYSTYPE* yyvalp,
     return 2;
   return 0;
 }
 
 static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList,
                                   yyGLRStack* yystack, YYSTYPE* yyvalp,

-                                  YYLTYPE* yylocp);
+                                  YYLTYPE* yylocp]b4_user_formals[);

 
 static YYRESULTTAG
 
 static YYRESULTTAG

-yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack)
+yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack]b4_user_formals[)

 {
   YYRESULTTAG yyflag;
 {
   YYRESULTTAG yyflag;

-  if (yyn > 0)
+  if (0 < yyn)

     {
     {

-      assert (yys->yypred != NULL);
-      yyflag = yyresolveStates (yys->yypred, yyn-1, yystack);
+      YYASSERT (yys->yypred);
+      yyflag = yyresolveStates (yys->yypred, yyn-1, yystack]b4_user_args[);

       if (yyflag != yyok)
        return yyflag;
       if (! yys->yyresolved)
        {
          yyflag = yyresolveValue (yys->yysemantics.yyfirstVal, yystack,
       if (yyflag != yyok)
        return yyflag;
       if (! yys->yyresolved)
        {
          yyflag = yyresolveValue (yys->yysemantics.yyfirstVal, yystack,

-                              &yys->yysemantics.yysval, &yys->yyloc);
+                                  &yys->yysemantics.yysval, &yys->yyloc
+                                 ]b4_user_args[);

          if (yyflag != yyok)
            return yyflag;
          yys->yyresolved = yytrue;
          if (yyflag != yyok)
            return yyflag;
          yys->yyresolved = yytrue;


@@ -1258,60 +1363,48 @@ yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack)
 
 static YYRESULTTAG
 yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystack,
 
 static YYRESULTTAG
 yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystack,

-                YYSTYPE* yyvalp, YYLTYPE* yylocp)
+                YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)

 {
 {

-  yyGLRStackItem yyrhsVals[YYMAXRHS];
-  int yynrhs, yyi;
-  yyGLRState* yys;
+  yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
+  int yynrhs;

 
   yynrhs = yyrhsLength (yyopt->yyrule);
 
   yynrhs = yyrhsLength (yyopt->yyrule);

-  YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack));
-  for (yyi = yynrhs-1, yys = yyopt->yystate; yyi >= 0;
-       yyi -= 1, yys = yys->yypred)
-    {
-      assert (yys->yypred != NULL);
-      yyrhsVals[yyi].yystate.yyresolved = yytrue;
-      yyrhsVals[yyi].yystate.yysemantics.yysval = yys->yysemantics.yysval;
-      yyrhsVals[yyi].yystate.yyloc = yys->yyloc;
-    }
-  return yyuserAction (yyopt->yyrule, yynrhs, yyrhsVals + (yynrhs-1),
-                      yyvalp, yylocp, yystack);
+  YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack]b4_user_args[));
+  yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate;
+  return yyuserAction (yyopt->yyrule, yynrhs,
+                      yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
+                      yyvalp, yylocp, yystack]b4_user_args[);

 }
 
 #if YYDEBUG
 }
 
 #if YYDEBUG

-static yyGLRState YYLEFTMOST_STATE =
-  {
-    0, 0, -1, NULL, 0, { NULL },
-    /* yyloc.  */
-    {
-#if YYLTYPE_IS_TRIVIAL
-]b4_location_if([      0, 0, 0, 0])[
-#endif
-    }
-  };
-
-static void yyreportTree (yySemanticOption* yyx, int yyindent)
+static void
+yyreportTree (yySemanticOption* yyx, int yyindent)

 {
   int yynrhs = yyrhsLength (yyx->yyrule);
   int yyi;
   yyGLRState* yys;
   yyGLRState* yystates[YYMAXRHS];
 {
   int yynrhs = yyrhsLength (yyx->yyrule);
   int yyi;
   yyGLRState* yys;
   yyGLRState* yystates[YYMAXRHS];

+  yyGLRState yyleftmost_state;

 
 

-  for (yyi = yynrhs, yys = yyx->yystate; yyi > 0; yyi -= 1, yys = yys->yypred)
+  for (yyi = yynrhs, yys = yyx->yystate; 0 < yyi; yyi -= 1, yys = yys->yypred)

     yystates[yyi] = yys;
   if (yys == NULL)
     yystates[yyi] = yys;
   if (yys == NULL)

-    yystates[0] = &YYLEFTMOST_STATE;
+    {
+      yyleftmost_state.yyposn = 0;
+      yystates[0] = &yyleftmost_state;
+    }

   else
     yystates[0] = yys;
 
   else
     yystates[0] = yys;
 

-  if (yys->yyposn+1 > yyx->yystate->yyposn)
+  if (yyx->yystate->yyposn < yys->yyposn + 1)

     YYFPRINTF (stderr, "%*s%s -> <Rule %d, empty>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
               yyx->yyrule);
   else
     YYFPRINTF (stderr, "%*s%s -> <Rule %d, empty>\n",
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
               yyx->yyrule);
   else

-    YYFPRINTF (stderr, "%*s%s -> <Rule %d, tokens %d .. %d>\n",
+    YYFPRINTF (stderr, "%*s%s -> <Rule %d, tokens %lu .. %lu>\n",

               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),
               yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)),

-              yyx->yyrule, yys->yyposn+1, yyx->yystate->yyposn);
+              yyx->yyrule, (unsigned long int) (yys->yyposn + 1),
+              (unsigned long int) yyx->yystate->yyposn);

   for (yyi = 1; yyi <= yynrhs; yyi += 1)
     {
       if (yystates[yyi]->yyresolved)
   for (yyi = 1; yyi <= yynrhs; yyi += 1)
     {
       if (yystates[yyi]->yyresolved)


@@ -1320,9 +1413,10 @@ static void yyreportTree (yySemanticOption* yyx, int yyindent)
            YYFPRINTF (stderr, "%*s%s <empty>\n", yyindent+2, "",
                       yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]));
          else
            YYFPRINTF (stderr, "%*s%s <empty>\n", yyindent+2, "",
                       yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]));
          else

-           YYFPRINTF (stderr, "%*s%s <tokens %d .. %d>\n", yyindent+2, "",
+           YYFPRINTF (stderr, "%*s%s <tokens %lu .. %lu>\n", yyindent+2, "",

                       yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]),
                       yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]),

-                      yystates[yyi-1]->yyposn+1, yystates[yyi]->yyposn);
+                      (unsigned long int) (yystates[yyi - 1]->yyposn + 1),
+                      (unsigned long int) yystates[yyi]->yyposn);

        }
       else
        yyreportTree (yystates[yyi]->yysemantics.yyfirstVal, yyindent+2);
        }
       else
        yyreportTree (yystates[yyi]->yysemantics.yyfirstVal, yyindent+2);


@@ -1332,7 +1426,7 @@ static void yyreportTree (yySemanticOption* yyx, int yyindent)
 
 static void
 yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
 
 static void
 yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,

-                  yyGLRStack* yystack)
+                  yyGLRStack* yystack]b4_pure_formals[)

 {
   /* `Unused' warnings.  */
   (void) yyx0;
 {
   /* `Unused' warnings.  */
   (void) yyx0;


@@ -1346,7 +1440,7 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
   yyreportTree (yyx1, 2);
   YYFPRINTF (stderr, "\n");
 #endif
   yyreportTree (yyx1, 2);
   YYFPRINTF (stderr, "\n");
 #endif

-  yyFail (yystack, "ambiguity detected");
+  yyFail (yystack][]b4_pure_args[, "ambiguity detected");

 }
 
 
 }
 
 


@@ -1354,7 +1448,7 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
  *  actions, and return the result. */
 static YYRESULTTAG
 yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,
  *  actions, and return the result. */
 static YYRESULTTAG
 yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,

-               YYSTYPE* yyvalp, YYLTYPE* yylocp)
+               YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)

 {
   yySemanticOption* yybest;
   yySemanticOption* yyp;
 {
   yySemanticOption* yybest;
   yySemanticOption* yyp;


@@ -1370,7 +1464,7 @@ yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,
        switch (yypreference (yybest, yyp))
          {
          case 0:
        switch (yypreference (yybest, yyp))
          {
          case 0:

-           yyreportAmbiguity (yybest, yyp, yystack);
+           yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[);

            break;
          case 1:
            yymerge = 1;
            break;
          case 1:
            yymerge = 1;


@@ -1387,25 +1481,25 @@ yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,
   if (yymerge)
     {
       int yyprec = yydprec[yybest->yyrule];
   if (yymerge)
     {
       int yyprec = yydprec[yybest->yyrule];

-      YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp));
+      YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[));

       for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext)
        {
          if (yyprec == yydprec[yyp->yyrule])
            {
              YYSTYPE yyval1;
              YYLTYPE yydummy;
       for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext)
        {
          if (yyprec == yydprec[yyp->yyrule])
            {
              YYSTYPE yyval1;
              YYLTYPE yydummy;

-             YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy));
-             *yyvalp = yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1);
+             YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy]b4_user_args[));
+             yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1);

            }
        }
       return yyok;
     }
   else
            }
        }
       return yyok;
     }
   else

-    return yyresolveAction (yybest, yystack, yyvalp, yylocp);
+    return yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[);

 }
 
 static YYRESULTTAG
 }
 
 static YYRESULTTAG

-yyresolveStack (yyGLRStack* yystack)
+yyresolveStack (yyGLRStack* yystack]b4_user_formals[)

 {
   if (yystack->yysplitPoint != NULL)
     {
 {
   if (yystack->yysplitPoint != NULL)
     {


@@ -1415,8 +1509,9 @@ yyresolveStack (yyGLRStack* yystack)
       for (yyn = 0, yys = yystack->yytops.yystates[0];
           yys != yystack->yysplitPoint;
           yys = yys->yypred, yyn += 1)
       for (yyn = 0, yys = yystack->yytops.yystates[0];
           yys != yystack->yysplitPoint;
           yys = yys->yypred, yyn += 1)

-       ;
-      YYCHK (yyresolveStates (yystack->yytops.yystates[0], yyn, yystack));
+       continue;
+      YYCHK (yyresolveStates (yystack->yytops.yystates[0], yyn, yystack
+                            ]b4_user_args[));

     }
   return yyok;
 }
     }
   return yyok;
 }


@@ -1453,18 +1548,21 @@ yycompressStack (yyGLRStack* yystack)
 
 static YYRESULTTAG
 yyprocessOneStack (yyGLRStack* yystack, int yyk,
 
 static YYRESULTTAG
 yyprocessOneStack (yyGLRStack* yystack, int yyk,

-                  size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
+                  size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp
+                 ]b4_user_formals[)

 {
   int yyaction;
 {
   int yyaction;

-  const short* yyconflicts;
+  const short int* yyconflicts;

   yyRuleNum yyrule;
   yySymbol* const yytokenp = yystack->yytokenp;
 
   while (yystack->yytops.yystates[yyk] != NULL)
     {
       yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState;
   yyRuleNum yyrule;
   yySymbol* const yytokenp = yystack->yytokenp;
 
   while (yystack->yytops.yystates[yyk] != NULL)
     {
       yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState;

+      YYDPRINTF ((stderr, "Stack %d Entering state %d\n", yyk, yystate));
+
+      YYASSERT (yystate != YYFINAL);

 
 

-      assert (yystate != YYFINAL);

       if (yyisDefaultedState (yystate))
        {
          yyrule = yydefaultAction (yystate);
       if (yyisDefaultedState (yystate))
        {
          yyrule = yydefaultAction (yystate);


@@ -1474,7 +1572,7 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk,
              yymarkStackDeleted (yystack, yyk);
              return yyok;
            }
              yymarkStackDeleted (yystack, yyk);
              return yyok;
            }

-         YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse));
+         YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_lpure_args[));

        }
       else
        {
        }
       else
        {


@@ -1482,9 +1580,8 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk,
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;

-             *yytokenp = YYTRANSLATE(yychar);
-             YYDPRINTF ((stderr, "Next token is %s\n",
-                         yytokenName (*yytokenp)));
+             *yytokenp = YYTRANSLATE (yychar);
+             YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);

            }
          yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
 
            }
          yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
 


@@ -1493,18 +1590,20 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk,
              int yynewStack = yysplitStack (yystack, yyk);
              YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n",
                          yynewStack, yyk));
              int yynewStack = yysplitStack (yystack, yyk);
              YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n",
                          yynewStack, yyk));

-             YYCHK (yyglrReduce (yystack, yynewStack, *yyconflicts, yyfalse));
+             YYCHK (yyglrReduce (yystack, yynewStack,
+                                 *yyconflicts, yyfalse]b4_lpure_args[));

              YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn,
              YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn,

-                                       yylvalp, yyllocp));
+                                       yylvalp, yyllocp]b4_user_args[));

              yyconflicts += 1;
            }
 
          if (yyisShiftAction (yyaction))
            {
              yyconflicts += 1;
            }
 
          if (yyisShiftAction (yyaction))
            {

-             YYDPRINTF ((stderr, "Shifting token %s on stack %d, ",
-                         yytokenName (*yytokenp), yyk));
-             yyglrShift (yystack, yyk, yyaction, yyposn+1, *yylvalp, yyllocp);
-             YYDPRINTF ((stderr, "which is now in state #%d\n",
+             YYDPRINTF ((stderr, "On stack %d, ", yyk));
+             YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp);
+             yyglrShift (yystack, yyk, yyaction, yyposn+1,
+                         *yylvalp, yyllocp]b4_user_args[);
+             YYDPRINTF ((stderr, ", now in state #%d\n",

                          yystack->yytops.yystates[yyk]->yylrState));
              break;
            }
                          yystack->yytops.yystates[yyk]->yylrState));
              break;
            }


@@ -1515,14 +1614,15 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk,
              break;
            }
          else
              break;
            }
          else

-           YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse));
+           YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_lpure_args[));

        }
     }
   return yyok;
 }
 
 static void
        }
     }
   return yyok;
 }
 
 static void

-yyreportParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
+yyreportSyntaxError (yyGLRStack* yystack,
+                    YYSTYPE* yylvalp, YYLTYPE* yyllocp]b4_user_formals[)

 {
   /* `Unused' warnings. */
   (void) yylvalp;
 {
   /* `Unused' warnings. */
   (void) yylvalp;


@@ -1532,85 +1632,131 @@ yyreportParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
     {
 #if YYERROR_VERBOSE
       yySymbol* const yytokenp = yystack->yytokenp;
     {
 #if YYERROR_VERBOSE
       yySymbol* const yytokenp = yystack->yytokenp;

-      int yyn, yyx, yycount;
-      size_t yysize;
-      const char* yyprefix;
-      char* yyp;
-      char* yymsg;
+      int yyn;

       yyn = yypact[yystack->yytops.yystates[0]->yylrState];
       if (YYPACT_NINF < yyn && yyn < YYLAST)
        {
       yyn = yypact[yystack->yytops.yystates[0]->yylrState];
       if (YYPACT_NINF < yyn && yyn < YYLAST)
        {

-         yycount = 0;
+         size_t yysize = 0;
+         const char* yyprefix;
+         char* yymsg;
+         int yyx;
+

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

-         yysize = sizeof ("parse error, unexpected ")
-           + strlen (yytokenName (*yytokenp));
+         int yyxbegin = yyn < 0 ? -yyn : 0;
+
+         /* Stay within bounds of both yycheck and yytname.  */
+         int yychecklim = YYLAST - yyn;
+         int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+         int yycount = 0;
+

          yyprefix = ", expecting ";
          yyprefix = ", expecting ";

-         for (yyx = yyn < 0 ? -yyn : 0; yyx < yytname_size && yycount <= 5;
-              yyx += 1)
+         for (yyx = yyxbegin; yyx < yyxend; ++yyx)

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

-             yysize += strlen (yytokenName (yyx)) + strlen (yyprefix),
-               yycount += 1, yyprefix = " or ";
-         yymsg = yyp = (char*) malloc (yysize);
-         yyp += sprintf (yyp, "parse error, unexpected %s",
-                         yytokenName (*yytokenp));
-         if (yycount < 5)
-           {
-             yyprefix = ", expecting ";
-             for (yyx = yyn < 0 ? -yyn : 0; yyx < yytname_size; yyx += 1)
-               if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+             {
+               yysize += strlen (yyprefix) + strlen (yytokenName (yyx));
+               yycount += 1;
+               if (yycount == 5)

                  {
                  {

-                   yyp += sprintf (yyp, "%s%s", yyprefix, yytokenName (yyx));
-                   yyprefix = " or ";
+                   yysize = 0;
+                   break;

                  }
                  }

+               yyprefix = " or ";
+             }
+         yysize += (sizeof ("syntax error, unexpected ")
+                    + strlen (yytokenName (*yytokenp)));
+         yymsg = (char*) YYMALLOC (yysize);
+         if (yymsg != 0)
+           {
+             char* yyp = yymsg;
+             sprintf (yyp, "syntax error%s%s",
+                      (*yytokenp == YYEMPTY ? "" : ", unexpected "),
+                      yytokenName (*yytokenp));
+             yyp += strlen (yyp);
+             if (yycount < 5)
+               {
+                 yyprefix = ", expecting ";
+                 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+                   if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+                     {
+                       sprintf (yyp, "%s%s", yyprefix, yytokenName (yyx));
+                       yyp += strlen (yyp);
+                       yyprefix = " or ";
+                     }
+               }
+             yyerror (]b4_lyyerror_args[yymsg);
+             YYFREE (yymsg);

            }
            }

-         yyerror (yymsg);
-         free (yymsg);
+         else
+           yyerror (]b4_lyyerror_args["syntax error; also virtual memory exhausted");

        }
       else
        }
       else

-#endif
-       yyerror ("parse error");
+#endif /* YYERROR_VERBOSE */
+       yyerror (]b4_lyyerror_args["syntax error");

       yynerrs += 1;
     }
 }
 
 /* Recover from a syntax error on YYSTACK, assuming that YYTOKENP,
    YYLVALP, and YYLLOCP point to the syntactic category, semantic
       yynerrs += 1;
     }
 }
 
 /* Recover from a syntax error on YYSTACK, assuming that YYTOKENP,
    YYLVALP, and YYLLOCP point to the syntactic category, semantic

-   value, and location of the lookahead.  */
+   value, and location of the look-ahead.  */

 static void
 static void

-yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
+yyrecoverSyntaxError (yyGLRStack* yystack,
+                     YYSTYPE* yylvalp,
+                     YYLTYPE* yyllocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[
+                     ]b4_user_formals[)

 {
   yySymbol* const yytokenp = yystack->yytokenp;
   size_t yyk;
   int yyj;
 
 {
   yySymbol* const yytokenp = yystack->yytokenp;
   size_t yyk;
   int yyj;
 

-  if (yystack->yyerrState == 0)
-    yystack->yyerrState = 3;
-  else if (yystack->yyerrState == 3)
+  if (yystack->yyerrState == 3)

     /* We just shifted the error token and (perhaps) took some
        reductions.  Skip tokens until we can proceed.  */
     while (yytrue)
       {
        if (*yytokenp == YYEOF)
     /* We just shifted the error token and (perhaps) took some
        reductions.  Skip tokens until we can proceed.  */
     while (yytrue)
       {
        if (*yytokenp == YYEOF)

-         yyFail (yystack, NULL);
+         {
+           /* Now pop stack until empty and fail. */
+           while (yystack->yytops.yystates[0] != NULL)
+             {
+               yyGLRState *yys = yystack->yytops.yystates[0];
+]b4_location_if([[             yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
+               yydestruct ("Error: popping",
+                            yystos[yys->yylrState],
+                           &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
+               yystack->yytops.yystates[0] = yys->yypred;
+               yystack->yynextFree -= 1;
+               yystack->yyspaceLeft += 1;
+             }
+           yyFail (yystack][]b4_lpure_args[, NULL);
+         }

        if (*yytokenp != YYEMPTY)
        if (*yytokenp != YYEMPTY)

-         YYDPRINTF ((stderr, "Discarding token %s\n",
-                     yytokenName (*yytokenp)));
+         {]b4_location_if([[
+           /* We throw away the lookahead, but the error range
+              of the shifted error token must take it into account. */
+           yyGLRState *yys = yystack->yytops.yystates[0];
+           yyGLRStackItem yyerror_range[3];
+           yyerror_range[1].yystate.yyloc = yys->yyloc;
+           yyerror_range[2].yystate.yyloc = *yyllocp;
+           YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[
+           yydestruct ("Error: discarding",
+                       *yytokenp, yylvalp]b4_location_if([, yyllocp])[);
+         }

        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;
        *yytokenp = YYTRANSLATE (yychar);
        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;
        *yytokenp = YYTRANSLATE (yychar);

-       YYDPRINTF ((stderr, "Next token is %s\n", yytokenName (*yytokenp)));
+       YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);

        yyj = yypact[yystack->yytops.yystates[0]->yylrState];
        yyj = yypact[yystack->yytops.yystates[0]->yylrState];

-       if (yyj == YYPACT_NINF)
-         /* Something's not right; we shouldn't be here.  */
-         yyFail (yystack, NULL);
+       if (yyis_pact_ninf (yyj))
+         return;

        yyj += *yytokenp;
        if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp)
          {
            if (yydefact[yystack->yytops.yystates[0]->yylrState] != 0)
              return;
          }
        yyj += *yytokenp;
        if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp)
          {
            if (yydefact[yystack->yytops.yystates[0]->yylrState] != 0)
              return;
          }

-       else if (yytable[yyj] != 0 && yytable[yyj] != YYTABLE_NINF)
+       else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))

          return;
       }
 
          return;
       }
 


@@ -1619,29 +1765,46 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
     if (yystack->yytops.yystates[yyk] != NULL)
       break;
   if (yyk >= yystack->yytops.yysize)
     if (yystack->yytops.yystates[yyk] != NULL)
       break;
   if (yyk >= yystack->yytops.yysize)

-    yyFail (yystack, NULL);
+    yyFail (yystack][]b4_lpure_args[, NULL);

   for (yyk += 1; yyk < yystack->yytops.yysize; yyk += 1)
     yymarkStackDeleted (yystack, yyk);
   yyremoveDeletes (yystack);
   yycompressStack (yystack);
 
   /* Now pop stack until we find a state that shifts the error token. */
   for (yyk += 1; yyk < yystack->yytops.yysize; yyk += 1)
     yymarkStackDeleted (yystack, yyk);
   yyremoveDeletes (yystack);
   yycompressStack (yystack);
 
   /* Now pop stack until we find a state that shifts the error token. */

+  yystack->yyerrState = 3;

   while (yystack->yytops.yystates[0] != NULL)
     {
   while (yystack->yytops.yystates[0] != NULL)
     {

-      yyj = yypact[yystack->yytops.yystates[0]->yylrState] + YYTERROR;
-      if (yyj != YYPACT_NINF + YYTERROR && yyj >= 0 && yyj <= YYLAST &&
-         yycheck[yyj] == YYTERROR && yyisShiftAction (yytable[yyj]))
+      yyGLRState *yys = yystack->yytops.yystates[0];
+      yyj = yypact[yys->yylrState];
+      if (! yyis_pact_ninf (yyj))

        {
        {

-         yyglrShift (yystack, 0, yytable[yyj],
-                     yystack->yytops.yystates[0]->yyposn, *yylvalp, yyllocp);
-         break;
+         yyj += YYTERROR;
+         if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
+             && yyisShiftAction (yytable[yyj]))
+           {
+             /* Shift the error token having adjusted its location.  */
+             YYLTYPE yyerrloc;]b4_location_if([[
+             yystack->yyerror_range[2].yystate.yyloc = *yyllocp;
+             YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range, 2);]])[
+             YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],
+                              yylvalp, &yyerrloc);
+             yyglrShift (yystack, 0, yytable[yyj],
+                         yys->yyposn, *yylvalp, &yyerrloc]b4_user_args[);
+             yys = yystack->yytops.yystates[0];
+             break;
+           }

        }
        }

-      yystack->yytops.yystates[0] = yystack->yytops.yystates[0]->yypred;
+]b4_location_if([[      yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
+      yydestruct ("Error: popping",
+                 yystos[yys->yylrState],
+                 &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
+      yystack->yytops.yystates[0] = yys->yypred;

       yystack->yynextFree -= 1;
       yystack->yyspaceLeft += 1;
     }
   if (yystack->yytops.yystates[0] == NULL)
       yystack->yynextFree -= 1;
       yystack->yyspaceLeft += 1;
     }
   if (yystack->yytops.yystates[0] == NULL)

-    yyFail (yystack, NULL);
+    yyFail (yystack][]b4_lpure_args[, NULL);

 }
 
 #define YYCHK1(YYE)                                                         \
 }
 
 #define YYCHK1(YYE)                                                         \


@@ -1660,8 +1823,12 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp)
     }                                                                       \
   } while (0)
 
     }                                                                       \
   } while (0)
 

-int
-yyparse (YYPARSE_PARAM_ARG)
+
+/*----------.
+| yyparse.  |
+`----------*/
+
+]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[

 {
   yySymbol yytoken;
   yyGLRStack yystack;
 {
   yySymbol yytoken;
   yyGLRStack yystack;


@@ -1685,24 +1852,41 @@ yyparse (YYPARSE_PARAM_ARG)
   if (setjmp (yystack.yyexception_buffer) != 0)
     goto yyDone;
 
   if (setjmp (yystack.yyexception_buffer) != 0)
     goto yyDone;
 

-  yyglrShift (&yystack, 0, 0, 0, yyval_default, &yyloc_default);
+  yylval = yyval_default;
+]b4_location_if([
+#if YYLTYPE_IS_TRIVIAL
+  yylloc.first_line   = yylloc.last_line   = 1;
+  yylloc.first_column = yylloc.last_column = 0;
+#endif
+])
+m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar],     [yylval])dnl
+m4_pushdef([b4_dollar_dollar], [yylloc])dnl
+  /* User initialization code. */
+  b4_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])dnl
+/* Line __line__ of glr.c.  */
+b4_syncline([@oline@], [@ofile@])])dnl
+[
+  yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc]b4_user_args[);

   yytoken = YYEMPTY;
   yyposn = 0;
 
   while (yytrue)
     {
   yytoken = YYEMPTY;
   yyposn = 0;
 
   while (yytrue)
     {

-      /* For efficiency, we have two loops, of which the first of which
-       * is specialized to deterministic operation (single stack, no
-       * potential ambiguity). */
-
+      /* For efficiency, we have two loops, the first of which is
+        specialized to deterministic operation (single stack, no
+        potential ambiguity).  */

       /* Standard mode */
       while (yytrue)
        {
          yyRuleNum yyrule;
          int yyaction;
       /* Standard mode */
       while (yytrue)
        {
          yyRuleNum yyrule;
          int yyaction;

-         const short* yyconflicts;
+         const short int* yyconflicts;

 
          yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;
 
          yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;

+          YYDPRINTF ((stderr, "Entering state %d\n", yystate));

          if (yystate == YYFINAL)
            goto yyDone;
          if (yyisDefaultedState (yystate))
          if (yystate == YYFINAL)
            goto yyDone;
          if (yyisDefaultedState (yystate))


@@ -1710,10 +1894,11 @@ yyparse (YYPARSE_PARAM_ARG)
              yyrule = yydefaultAction (yystate);
              if (yyrule == 0)
                {
              yyrule = yydefaultAction (yystate);
              if (yyrule == 0)
                {

-                 yyreportParseError (&yystack, yylvalp, yyllocp);
+]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
+                 yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);

                  goto yyuser_error;
                }
                  goto yyuser_error;
                }

-             YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue));
+             YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_lpure_args[));

            }
          else
            {
            }
          else
            {


@@ -1722,32 +1907,30 @@ yyparse (YYPARSE_PARAM_ARG)
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;
                  yytoken = YYTRANSLATE (yychar);
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;
                  yytoken = YYTRANSLATE (yychar);

-                 YYDPRINTF ((stderr, "Next token is %s\n",
-                             yytokenName (yytoken)));
+                  YY_SYMBOL_PRINT ("Next token is", yytoken, yylvalp, yyllocp);

                }
              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {
                }
              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {

-                 YYDPRINTF ((stderr, "Shifting token %s, ",
-                             yytokenName (yytoken)));
+                 YY_SYMBOL_PRINT ("Shifting", yytoken, yylvalp, yyllocp);

                  if (yytoken != YYEOF)
                    yytoken = YYEMPTY;
                  yyposn += 1;
                  if (yytoken != YYEOF)
                    yytoken = YYEMPTY;
                  yyposn += 1;

-                 yyglrShift (&yystack, 0, yyaction, yyposn, yylval, yyllocp);
-                 if (yystack.yyerrState > 0)
+                 yyglrShift (&yystack, 0, yyaction, yyposn,
+                             yylval, yyllocp]b4_user_args[);
+                 if (0 < yystack.yyerrState)

                    yystack.yyerrState -= 1;
                    yystack.yyerrState -= 1;

-                 YYDPRINTF ((stderr, "Entering state %d\n",
-                             yystack.yytops.yystates[0]->yylrState));

                }
              else if (yyisErrorAction (yyaction))
                {
                }
              else if (yyisErrorAction (yyaction))
                {

-                 yyreportParseError (&yystack, yylvalp, yyllocp);
+]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
+                 yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);

                  goto yyuser_error;
                }
              else
                  goto yyuser_error;
                }
              else

-               YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue));
+               YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_lpure_args[));

            }
        }
 
            }
        }
 


@@ -1757,7 +1940,7 @@ yyparse (YYPARSE_PARAM_ARG)
          int yyn = yystack.yytops.yysize;
          for (yys = 0; yys < yyn; yys += 1)
            YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn,
          int yyn = yystack.yytops.yysize;
          for (yys = 0; yys < yyn; yys += 1)
            YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn,

-                                      yylvalp, yyllocp));
+                                      yylvalp, yyllocp]b4_user_args[));

          yytoken = YYEMPTY;
          yyposn += 1;
          yyremoveDeletes (&yystack);
          yytoken = YYEMPTY;
          yyposn += 1;
          yyremoveDeletes (&yystack);


@@ -1765,15 +1948,16 @@ yyparse (YYPARSE_PARAM_ARG)
            {
              yyundeleteLastStack (&yystack);
              if (yystack.yytops.yysize == 0)
            {
              yyundeleteLastStack (&yystack);
              if (yystack.yytops.yysize == 0)

-               yyFail (&yystack, "parse error");
-             YYCHK1 (yyresolveStack (&yystack));
+               yyFail (&yystack][]b4_lpure_args[, "syntax error");
+             YYCHK1 (yyresolveStack (&yystack]b4_user_args[));

              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));

-             yyreportParseError (&yystack, yylvalp, yyllocp);
+]b4_location_if([[           yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
+             yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);

              goto yyuser_error;
            }
          else if (yystack.yytops.yysize == 1)
            {
              goto yyuser_error;
            }
          else if (yystack.yytops.yysize == 1)
            {

-             YYCHK1 (yyresolveStack (&yystack));
+             YYCHK1 (yyresolveStack (&yystack]b4_user_args[));

              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
              yycompressStack (&yystack);
              break;
              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
              yycompressStack (&yystack);
              break;


@@ -1781,17 +1965,21 @@ yyparse (YYPARSE_PARAM_ARG)
        }
       continue;
     yyuser_error:
        }
       continue;
     yyuser_error:

-      yyrecoverParseError (&yystack, yylvalp, yyllocp);
+      yyrecoverSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);

       yyposn = yystack.yytops.yystates[0]->yyposn;
     }
  yyDone:
       yyposn = yystack.yytops.yystates[0]->yyposn;
     }
  yyDone:

-  ;
+  /* On YYABORT, free the lookahead. */
+  if (yystack.yyerrflag == 1 && yytoken != YYEMPTY)
+    yydestruct ("Error: discarding lookahead",
+                yytoken, yylvalp]b4_location_if([, yyllocp])[);

 
   yyfreeGLRStack (&yystack);
   return yystack.yyerrflag;
 }
 
 /* DEBUGGING ONLY */
 
   yyfreeGLRStack (&yystack);
   return yystack.yyerrflag;
 }
 
 /* DEBUGGING ONLY */

+#ifdef YYDEBUG

 static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED;
 static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED;
 
 static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED;
 static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED;
 


@@ -1803,7 +1991,7 @@ yy_yypstack (yyGLRState* yys)
       yy_yypstack (yys->yypred);
       fprintf (stderr, " -> ");
     }
       yy_yypstack (yys->yypred);
       fprintf (stderr, " -> ");
     }

-  fprintf (stderr, "%d@%lu", yys->yylrState, (unsigned long) yys->yyposn);
+  fprintf (stderr, "%d@@%lu", yys->yylrState, (unsigned long int) yys->yyposn);

 }
 
 static void
 }
 
 static void


@@ -1822,7 +2010,7 @@ yypstack (yyGLRStack* yystack, int yyk)
   yypstates (yystack->yytops.yystates[yyk]);
 }
 
   yypstates (yystack->yytops.yystates[yyk]);
 }
 

-#define YYINDEX(YYX)                                                        \
+#define YYINDEX(YYX)                                                        \

     ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystack->yyitems)
 
 
     ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystack->yyitems)
 
 


@@ -1833,71 +2021,73 @@ yypdumpstack (yyGLRStack* yystack)
   size_t yyi;
   for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1)
     {
   size_t yyi;
   for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1)
     {

-      fprintf (stderr, "%3lu. ", (unsigned long) (yyp - yystack->yyitems));
-      if (*(bool*) yyp)
+      fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystack->yyitems));
+      if (*(yybool *) yyp)

        {
          fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
                   yyp->yystate.yyresolved, yyp->yystate.yylrState,
        {
          fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
                   yyp->yystate.yyresolved, yyp->yystate.yylrState,

-                  (unsigned long) yyp->yystate.yyposn,
-                  (long) YYINDEX (yyp->yystate.yypred));
+                  (unsigned long int) yyp->yystate.yyposn,
+                  (long int) YYINDEX (yyp->yystate.yypred));

          if (! yyp->yystate.yyresolved)
            fprintf (stderr, ", firstVal: %ld",
          if (! yyp->yystate.yyresolved)
            fprintf (stderr, ", firstVal: %ld",

-                    (long) YYINDEX (yyp->yystate.yysemantics.yyfirstVal));
+                    (long int) YYINDEX (yyp->yystate.yysemantics.yyfirstVal));

        }
       else
        {
          fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",
                   yyp->yyoption.yyrule,
        }
       else
        {
          fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",
                   yyp->yyoption.yyrule,

-                  (long) YYINDEX (yyp->yyoption.yystate),
-                  (long) YYINDEX (yyp->yyoption.yynext));
+                  (long int) YYINDEX (yyp->yyoption.yystate),
+                  (long int) YYINDEX (yyp->yyoption.yynext));

        }
       fprintf (stderr, "\n");
     }
   fprintf (stderr, "Tops:");
   for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
        }
       fprintf (stderr, "\n");
     }
   fprintf (stderr, "Tops:");
   for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)

-    fprintf (stderr, "%lu: %ld; ", (unsigned long) yyi,
-            (long) YYINDEX (yystack->yytops.yystates[yyi]));
+    fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi,
+            (long int) YYINDEX (yystack->yytops.yystates[yyi]));

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

-
+#endif

 ]
 
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],
 ]
 
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],

-[#output "b4_output_header_name"
-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002])
-#ifndef b4_header_guard
-# define b4_header_guard
+[@output @output_header_name@
+b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004])

 
 b4_token_defines(b4_tokens)
 
 
 b4_token_defines(b4_tokens)
 

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

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

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

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

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

 {
 {

+b4_location_if([

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

-} yyltype;
-# define YYLTYPE yyltype
+],[
+  char yydummy;
+])
+} YYLTYPE;
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1

 #endif
 
 #endif
 

-m4_if(b4_pure, [0],
+b4_location_if([b4_pure_if([],

 [extern YYLTYPE b4_prefix[]lloc;])
 ])
 [extern YYLTYPE b4_prefix[]lloc;])
 ])

-#endif /* not b4_header_guard */

 ])
 ])