-*- C -*-
# GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software
+# Foundation, Inc.
-# This program is free software; you can redistribute it and/or modify
+# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
-
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
m4_include(b4_pkgdatadir/[c.m4])
-# glr.cc checks %define variables also.
-m4_if(b4_skeleton, [["glr.c"]], [b4_check_percent_define_variables])
-
-b4_check_percent_code_qualifiers([[requires]],
- [[provides]],
- [[top]])
-
-b4_push_if([
-b4_complain([[non-deterministic push parsers are not yet supported]])])
-
## ---------------- ##
## Default values. ##
## ---------------- ##
## Pure/impure interfaces. ##
## ------------------------ ##
+b4_define_flag_if([pure])
+# If glr.cc is including this file and thus has already set b4_pure_flag, don't
+# change the value of b4_pure_flag, and don't record a use of api.pure.
+m4_ifndef([b4_pure_flag],
+[b4_percent_define_default([[api.pure]], [[false]])
+ m4_define([b4_pure_flag],
+ [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])])
# b4_user_formals
# ---------------
# --------------------
# Expansion of $<TYPE>$.
m4_define([b4_lhs_value],
-[((*yyvalp)[]m4_ifval([$1], [.$1]))])
+[b4_symbol_value([(*yyvalp)], [$1])])
+
+
+# b4_rhs_data(RULE-LENGTH, NUM)
+# -----------------------------
+# Expand to the semantic stack place that contains value and location
+# of symbol number NUM in a rule of length RULE-LENGTH.
+m4_define([b4_rhs_data],
+[((yyGLRStackItem const *)yyvsp)@{YYFILL (b4_subtract([$2], [$1]))@}.yystate])
# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])
+[b4_symbol_value([b4_rhs_data([$1], [$2]).yysemantics.yysval], [$3])])
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yyloc)])
+[(b4_rhs_data([$1], [$2]).yyloc)])
# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert_push(0)dnl
-@output(b4_parser_file_name@)
+@output(b4_parser_file_name@)@
b4_copyright([Skeleton implementation for Bison GLR parsers in C],
- [2002, 2003, 2004, 2005, 2006])
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])
[
/* C GLR parser skeleton written by Paul Hilfinger. */
]b4_identification
-m4_ifdef([b4_percent_code_top],
-[[/* Copy the %code "top" blocks. */
-]b4_user_code([b4_percent_code_top])])[]dnl
+b4_percent_code_get([[top]])[]dnl
m4_if(b4_prefix, [yy], [],
[/* Substitute the variable and function names. */
#define yyparse b4_prefix[]parse
dnl # Declaration that might either go into the header (if --defines)
dnl # or open coded in the parser body.
m4_define([b4_shared_declarations],
-[m4_ifdef([b4_percent_code_requires],
-[[/* Copy the %code "requires" blocks. */
-]b4_user_code([b4_percent_code_requires])])[]dnl
+[b4_percent_code_get([[requires]])[]dnl
b4_token_enums(b4_tokens)
[#ifndef YYSTYPE
]m4_ifdef([b4_stype],
[[typedef union ]b4_union_name[
+{
]b4_user_stype[
- YYSTYPE;
+} YYSTYPE;
# define YYSTYPE_IS_TRIVIAL 1]],
[m4_if(b4_tag_seen_flag, 0,
[[typedef int YYSTYPE;
# define YYLTYPE_IS_TRIVIAL 1
#endif
-]m4_ifdef([b4_percent_code_provides],
-[[/* Copy the %code "provides" blocks. */
-]b4_user_code([b4_percent_code_provides])])[]dnl
+]b4_percent_code_get([[provides]])[]dnl
])
b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
/* Enabling traces. */
#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug_flag[
+# define YYDEBUG ]b4_parse_trace_if([1], [0])[
#endif
/* Enabling verbose error messages. */
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
-# define YYERROR_VERBOSE ]b4_error_verbose_flag[
+# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
#endif
/* Enabling the token table. */
/* Copy the second part of user declarations. */
]b4_user_post_prologue
-m4_ifdef([b4_percent_code],
-[[/* Copy the unqualified %code blocks. */
-]b4_user_code([b4_percent_code])
-])[]dnl
+b4_percent_code_get[]dnl
[#include <stdio.h>
#include <stdlib.h>
};
#if YYDEBUG
-/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
- YYRHS. */
-static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
-{
- ]b4_prhs[
-};
-
-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
-static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
-{
- ]b4_rhs[
-};
-
/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
static const ]b4_int_type_for([b4_rline])[ yyrline[] =
{
};
#endif
-/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
-static const ]b4_int_type_for([b4_r1])[ yyr1[] =
-{
- ]b4_r1[
-};
+#define YYPACT_NINF ]b4_pact_ninf[
+#define YYTABLE_NINF ]b4_table_ninf[
-/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
-static const ]b4_int_type_for([b4_r2])[ yyr2[] =
-{
- ]b4_r2[
-};
+]b4_parser_tables_define[
/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none). */
static const ]b4_int_type_for([b4_dprec])[ yydprec[] =
]b4_merger[
};
-/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
- doesn't specify something else to do. Zero means the default is an
- error. */
-static const ]b4_int_type_for([b4_defact])[ yydefact[] =
-{
- ]b4_defact[
-};
-
-/* YYPDEFGOTO[NTERM-NUM]. */
-static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
-{
- ]b4_defgoto[
-};
-
-/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
- STATE-NUM. */
-#define YYPACT_NINF ]b4_pact_ninf[
-static const ]b4_int_type_for([b4_pact])[ yypact[] =
-{
- ]b4_pact[
-};
-
-/* YYPGOTO[NTERM-NUM]. */
-static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
-{
- ]b4_pgoto[
-};
-
-/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
- positive, shift that token. If negative, reduce the rule which
- number is the opposite. If zero, do what YYDEFACT says.
- If YYTABLE_NINF, syntax error. */
-#define YYTABLE_NINF ]b4_table_ninf[
-static const ]b4_int_type_for([b4_table])[ yytable[] =
-{
- ]b4_table[
-};
-
/* YYCONFLP[YYPACT[STATE-NUM]] -- Pointer into YYCONFL of start of
list of conflicting reductions corresponding to action entry for
state STATE-NUM in yytable. 0 means no conflicts. The list in
{
]b4_conflicting_rules[
};
-
-static const ]b4_int_type_for([b4_check])[ yycheck[] =
-{
- ]b4_check[
-};
-
-/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
- symbol of state STATE-NUM. */
-static const ]b4_int_type_for([b4_stos])[ yystos[] =
-{
- ]b4_stos[
-};
-
\f
/* Prevent warning if -Wmissing-prototypes. */
]b4_c_ansi_function_decl([yyparse], [int], b4_parse_param)[
typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
-#define YYCHK(YYE) \
- do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \
- while (YYID (0))
+#define YYCHK(YYE) \
+ do { \
+ YYRESULTTAG yyflag = YYE; \
+ if (yyflag != yyok) \
+ return yyflag; \
+ } while (YYID (0))
#if YYDEBUG
# endif
# define YYDPRINTF(Args) \
-do { \
- if (yydebug) \
- YYFPRINTF Args; \
-} while (YYID (0))
+ do { \
+ if (yydebug) \
+ YYFPRINTF Args; \
+ } while (YYID (0))
]b4_yy_symbol_print_generate([b4_c_ansi_function_def])[
-# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
-do { \
- if (yydebug) \
- { \
- YYFPRINTF (stderr, "%s ", Title); \
- yy_symbol_print (stderr, Type, \
- Value]b4_locations_if([, Location])[]b4_user_args[); \
- YYFPRINTF (stderr, "\n"); \
- } \
-} while (YYID (0))
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
+ do { \
+ if (yydebug) \
+ { \
+ YYFPRINTF (stderr, "%s ", Title); \
+ yy_symbol_print (stderr, Type, \
+ Value]b4_locations_if([, Location])[]b4_user_args[); \
+ YYFPRINTF (stderr, "\n"); \
+ } \
+ } while (YYID (0))
/* Nonzero means print parse trace. It is left uninitialized so that
multiple parsers can coexist. */
* stack #K of *STACKP. */
static void
yyaddDeferredAction (yyGLRStack* yystackp, size_t yyk, yyGLRState* yystate,
- yyGLRState* rhs, yyRuleNum yyrule)
+ yyGLRState* yyrhs, yyRuleNum yyrule)
{
yySemanticOption* yynewOption =
&yynewGLRStackItem (yystackp, yyfalse)->yyoption;
- yynewOption->yystate = rhs;
+ yynewOption->yystate = yyrhs;
yynewOption->yyrule = yyrule;
if (yystackp->yytops.yylookaheadNeeds[yyk])
{
* semantic value of YYRHS under the action for YYRULE. */
static inline void
yyglrShiftDefer (yyGLRStack* yystackp, size_t yyk, yyStateNum yylrState,
- size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule)
+ size_t yyposn, yyGLRState* yyrhs, yyRuleNum yyrule)
{
yyGLRState* yynewState = &yynewGLRStackItem (yystackp, yytrue)->yystate;
yystackp->yytops.yystates[yyk] = yynewState;
/* Invokes YY_RESERVE_GLRSTACK. */
- yyaddDeferredAction (yystackp, yyk, yynewState, rhs, yyrule);
+ yyaddDeferredAction (yystackp, yyk, yynewState, yyrhs, yyrule);
}
/** Pop the symbols consumed by reduction #RULE from the top of stack
if (yystackp->yysplitPoint == NULL)
{
/* Standard special case: single stack. */
- yyGLRStackItem* rhs = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
+ yyGLRStackItem* yyrhs = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
YYASSERT (yyk == 0);
yystackp->yynextFree -= yynrhs;
yystackp->yyspaceLeft += yynrhs;
yystackp->yytops.yystates[0] = & yystackp->yynextFree[-1].yystate;
- return yyuserAction (yyrule, yynrhs, rhs,
+ return yyuserAction (yyrule, yynrhs, yyrhs,
yyvalp, yylocp, yystackp]b4_user_args[);
}
else
`----------------------------------------------------------*/
/*ARGSUSED*/ static inline void
-yy_reduce_print (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
- YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yy_reduce_print (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule]b4_user_formals[)
{
int yynrhs = yyrhsLength (yyrule);
yybool yynormal __attribute__ ((__unused__)) =
yyGLRStackItem* yyvsp = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
int yylow = 1;
int yyi;
- YYUSE (yyvalp);
- YYUSE (yylocp);
]b4_parse_param_use[]dnl
[ YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu):\n",
(unsigned long int) yyk, yyrule - 1,
/* The symbols being reduced. */
for (yyi = 0; yyi < yynrhs; yyi++)
{
- fprintf (stderr, " $%d = ", yyi + 1);
- yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
+ YYFPRINTF (stderr, " $%d = ", yyi + 1);
+ yy_symbol_print (stderr,
+ ]yystos@{b4_rhs_data(yynrhs, yyi + 1).yylrState@}[,
&]b4_rhs_value(yynrhs, yyi + 1)[
]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
b4_user_args[);
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "\n");
}
}
#endif
YYSTYPE yysval;
YYLTYPE yyloc;
- YY_REDUCE_PRINT ((yystackp, yyk, yyrule, &yysval, &yyloc]b4_user_args[));
+ YY_REDUCE_PRINT ((yystackp, yyk, yyrule]b4_user_args[));
YYCHK (yydoAction (yystackp, yyk, yyrule, &yysval,
&yyloc]b4_user_args[));
YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyrule], &yysval, &yyloc);
{
if (yystates[yyi-1]->yyposn+1 > yystates[yyi]->yyposn)
YYFPRINTF (stderr, "%*s%s <empty>\n", yyindent+2, "",
- yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]));
+ yytokenName (yystos[yystates[yyi-1]->yylrState]));
else
YYFPRINTF (stderr, "%*s%s <tokens %lu .. %lu>\n", yyindent+2, "",
- yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]),
- (unsigned long int) (yystates[yyi - 1]->yyposn + 1),
+ yytokenName (yystos[yystates[yyi-1]->yylrState]),
+ (unsigned long int) (yystates[yyi-1]->yyposn + 1),
(unsigned long int) yystates[yyi]->yyposn);
}
else
yybool yysize_overflow = yyfalse;
char* yymsg = NULL;
enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+ /* Internationalized format string. */
+ const char *yyformat = 0;
+ /* Arguments of yyformat. */
char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
- int yyx;
- char *yyfmt;
- char const *yyf;
- static char const yyunexpected[] = "syntax error, unexpected %s";
- static char const yyexpecting[] = ", expecting %s";
- static char const yyor[] = " or %s";
- char yyformat[sizeof yyunexpected
- + sizeof yyexpecting - 1
- + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
- * (sizeof yyor - 1))];
- char const *yyprefix = yyexpecting;
/* Start YYX at -YYN if negative to avoid negative indexes in
YYCHECK. */
/* Stay within bounds of both yycheck and yytname. */
int yychecklim = YYLAST - yyn + 1;
int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
- int yycount = 1;
- yyarg[0] = yytokenName (yytoken);
- yyfmt = yystpcpy (yyformat, yyunexpected);
+ /* Number of reported tokens (one for the "unexpected", one per
+ "expected"). */
+ int yycount = 0;
+ int yyx;
+
+ yyarg[yycount++] = yytokenName (yytoken);
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
yycount = 1;
yysize = yysize0;
- yyformat[sizeof yyunexpected - 1] = '\0';
break;
}
yyarg[yycount++] = yytokenName (yyx);
yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx));
yysize_overflow |= yysize1 < yysize;
yysize = yysize1;
- yyfmt = yystpcpy (yyfmt, yyprefix);
- yyprefix = yyor;
}
- yyf = YY_(yyformat);
- yysize1 = yysize + strlen (yyf);
+ switch (yycount)
+ {
+#define YYCASE_(N, S) \
+ case N: \
+ yyformat = S; \
+ break
+ YYCASE_(1, YY_("syntax error, unexpected %s"));
+ YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+ YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+ YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+ YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+#undef YYCASE_
+ }
+
+ yysize1 = yysize + strlen (yyformat);
yysize_overflow |= yysize1 < yysize;
yysize = yysize1;
{
char *yyp = yymsg;
int yyi = 0;
- while ((*yyp = *yyf))
+ while ((*yyp = *yyformat))
{
- if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+ if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
{
yyp += yytnamerr (yyp, yyarg[yyi++]);
- yyf += 2;
+ yyformat += 2;
}
else
{
yyp++;
- yyf++;
+ yyformat++;
}
}
yyerror (]b4_lyyerror_args[yymsg);
}
/* DEBUGGING ONLY */
-#ifdef YYDEBUG
+#if YYDEBUG
static void yypstack (yyGLRStack* yystackp, size_t yyk)
__attribute__ ((__unused__));
static void yypdumpstack (yyGLRStack* yystackp) __attribute__ ((__unused__));
if (yys->yypred)
{
yy_yypstack (yys->yypred);
- fprintf (stderr, " -> ");
+ YYFPRINTF (stderr, " -> ");
}
- fprintf (stderr, "%d@@%lu", yys->yylrState, (unsigned long int) yys->yyposn);
+ YYFPRINTF (stderr, "%d@@%lu", yys->yylrState,
+ (unsigned long int) yys->yyposn);
}
static void
yypstates (yyGLRState* yyst)
{
if (yyst == NULL)
- fprintf (stderr, "<null>");
+ YYFPRINTF (stderr, "<null>");
else
yy_yypstack (yyst);
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "\n");
}
static void
size_t yyi;
for (yyp = yystackp->yyitems; yyp < yystackp->yynextFree; yyp += 1)
{
- fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystackp->yyitems));
+ YYFPRINTF (stderr, "%3lu. ",
+ (unsigned long int) (yyp - yystackp->yyitems));
if (*(yybool *) yyp)
{
- fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
- yyp->yystate.yyresolved, yyp->yystate.yylrState,
- (unsigned long int) yyp->yystate.yyposn,
- (long int) YYINDEX (yyp->yystate.yypred));
+ YYFPRINTF (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
+ yyp->yystate.yyresolved, yyp->yystate.yylrState,
+ (unsigned long int) yyp->yystate.yyposn,
+ (long int) YYINDEX (yyp->yystate.yypred));
if (! yyp->yystate.yyresolved)
- fprintf (stderr, ", firstVal: %ld",
- (long int) YYINDEX (yyp->yystate.yysemantics.yyfirstVal));
+ YYFPRINTF (stderr, ", firstVal: %ld",
+ (long int) YYINDEX (yyp->yystate
+ .yysemantics.yyfirstVal));
}
else
{
- fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld",
- yyp->yyoption.yyrule - 1,
- (long int) YYINDEX (yyp->yyoption.yystate),
- (long int) YYINDEX (yyp->yyoption.yynext));
+ YYFPRINTF (stderr, "Option. rule: %d, state: %ld, next: %ld",
+ yyp->yyoption.yyrule - 1,
+ (long int) YYINDEX (yyp->yyoption.yystate),
+ (long int) YYINDEX (yyp->yyoption.yynext));
}
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "\n");
}
- fprintf (stderr, "Tops:");
+ YYFPRINTF (stderr, "Tops:");
for (yyi = 0; yyi < yystackp->yytops.yysize; yyi += 1)
- fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi,
- (long int) YYINDEX (yystackp->yytops.yystates[yyi]));
- fprintf (stderr, "\n");
+ YYFPRINTF (stderr, "%lu: %ld; ", (unsigned long int) yyi,
+ (long int) YYINDEX (yystackp->yytops.yystates[yyi]));
+ YYFPRINTF (stderr, "\n");
}
#endif
-]
-
-b4_epilogue
+]b4_epilogue[]dnl
dnl
dnl glr.cc produces its own header.
dnl
m4_if(b4_skeleton, ["glr.c"],
[b4_defines_if(
-[@output(b4_spec_defines_file@)
+[@output(b4_spec_defines_file@)@
b4_copyright([Skeleton interface for Bison GLR parsers in C],
- [2002, 2003, 2004, 2005, 2006])
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])
b4_shared_declarations
-extern YYSTYPE b4_prefix[]lval;
+b4_pure_if([],
+[[extern YYSTYPE ]b4_prefix[lval;]])
b4_locations_if([b4_pure_if([],
-[extern YYLTYPE b4_prefix[]lloc;])
+[extern YYLTYPE ]b4_prefix[lloc;])
])
-])])
+])])[]dnl
m4_divert_pop(0)
projects / bison.git / blobdiff