m4_divert(-1) -*- C -*-
# GLR skeleton for Bison
-# Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005 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
# 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., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
## ---------------- ##
# b4_lyyerror_args
# ----------------
-# Same as above, but on the lookahead, hence yyllocp instead of yylocp.
+# 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_lpure_args
# -------------
-# Same as above, but on the lookahead, hence yyllocp instead of yylocp.
+# 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 lookahead, hence yyllocp instead of yylocp.
+# 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])
# --------------------
# 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])
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
-[yyvsp@{YYFILL (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]))])
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[yyvsp@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc])
+[(((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
@output @output_parser_name@
-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003])
+b4_copyright([Skeleton parser for GLR parsing with Bison],
+ [2002, 2003, 2004, 2005])
[
/* This is the parser code for GLR (Generalized LR) parser. */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <setjmp.h>
-
]b4_identification
m4_if(b4_prefix[], [yy], [],
-[/* If NAME_PREFIX is specified substitute the variables and functions
- names. */
+[/* Substitute the variable and function names. */
#define yyparse b4_prefix[]parse
#define yylex b4_prefix[]lex
#define yyerror b4_prefix[]error
#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)
# define YYLTYPE_IS_TRIVIAL 1
#endif
-/* Default (constant) values used for initialization for null
+/* Default (constant) value used for initialization for null
right-hand sides. Unlike the standard yacc.c template,
- here we set the default values of $$ and $@@ to zeroed-out
- values. Since the default value of these quantities is undefined,
- this behavior is technically correct. */
+ here we set the default value of $$ to a zeroed-out value.
+ Since the default value is undefined, this behavior is
+ technically correct. */
static YYSTYPE yyval_default;
-static YYLTYPE yyloc_default;
/* Copy the second part of user declarations. */
]b4_post_prologue[
]/* Line __line__ of glr.c. */
b4_syncline([@oline@], [@ofile@])
[
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <setjmp.h>
+
#ifndef YYFREE
# define YYFREE free
#endif
# define YYREALLOC realloc
#endif
+#define YYSIZEMAX ((size_t) -1)
+
#ifdef __cplusplus
typedef bool yybool;
#else
# if !defined (__GNUC__) || __GNUC__ < 2 || \
(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
# define __attribute__(Spec) /* empty */
+# else
+]b4_location_if([# define YYOPTIONAL_LOC(Name) Name],[
+# if defined (__cplusplus)
+# define YYOPTIONAL_LOC(Name) /* empty */
+# else
+# define YYOPTIONAL_LOC(Name) Name ATTRIBUTE_UNUSED
+# endif])[
# endif
#endif
#define YYTRANSLATE(YYX) \
((YYX <= 0) ? YYEOF : \
- (unsigned)(YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+ (unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
/* 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.
-[static const short yyconfl[] =
+[static const short int yyconfl[] =
{
]b4_conflicting_rules[
};
/* Error token number */
#define YYTERROR 1
-/* YYLLOC_DEFAULT -- Compute the default location (before the actions
- are run). */
+/* 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(yyRhs,YYK) ((yyRhs)[YYK].yystate.yyloc)
-
+#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
#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) \
+ 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
-# define YYLLOC_DEFAULT(yyCurrent, yyRhs, YYN) ((void) 0)
+# define YYLLOC_DEFAULT(Current, Rhs, N) ((void) 0)
#endif
])[
+#ifndef YY_LOCATION_PRINT
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+#endif
+
/* YYLEX -- calling `yylex' with the right arguments. */
#define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
]b4_yysymprint_generate([b4_c_ansi_function_def])[
-# define YYDSYMPRINT(Args) \
-do { \
- if (yydebug) \
- yysymprint Args; \
-} while (0)
-
-# define YYDSYMPRINTF(Title, Token, Value, Location) \
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
do { \
if (yydebug) \
{ \
YYFPRINTF (stderr, "%s ", Title); \
yysymprint (stderr, \
- Token, Value]b4_location_if([, Location])[); \
- YYFPRINTF (stderr, "\n"); \
+ Type, Value]b4_location_if([, Location])[); \
} \
} while (0)
#else /* !YYDEBUG */
- /* Avoid empty `if' bodies. */
# define YYDPRINTF(Args)
-# define YYDSYMPRINT(Args)
-# define YYDSYMPRINTF(Title, Token, Value, Location)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
#endif /* !YYDEBUG */
SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem)
evaluated with infinite-precision integer arithmetic. */
-#if YYMAXDEPTH == 0
-# undef YYMAXDEPTH
-#endif
-
#ifndef YYMAXDEPTH
# define YYMAXDEPTH ]b4_stack_depth_max[
#endif
/* Minimum number of free items on the stack allowed after an
allocation. This is to allow allocation and initialization
- to be completed by functions that call expandGLRStack before the
+ to be completed by functions that call yyexpandGLRStack before the
stack is expanded, thus insuring that all necessary pointers get
properly redirected to new data. */
#define YYHEADROOM 2
-#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
+#ifndef YYSTACKEXPANDABLE
+# if (! 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
+# endif
#endif
+#if YYERROR_VERBOSE
+
+# ifndef yystpcpy
+# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
+# define yystpcpy stpcpy
+# else
+/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+ YYDEST. */
+static char *
+yystpcpy (char *yydest, const char *yysrc)
+{
+ char *yyd = yydest;
+ const char *yys = yysrc;
+
+ while ((*yyd++ = *yys++) != '\0')
+ continue;
+
+ return yyd - 1;
+}
+# endif
+# endif
+
+#endif /* !YYERROR_VERBOSE */
+
/** State numbers, as in LALR(1) machine */
typedef int yyStateNum;
typedef int yyRuleNum;
/** Grammar symbol */
-typedef short yySymbol;
+typedef short int yySymbol;
/** Item references, as in LALR(1) machine */
-typedef short yyItemNum;
+typedef short int yyItemNum;
typedef struct yyGLRState yyGLRState;
typedef struct yySemanticOption yySemanticOption;
typedef struct yyGLRStateSet yyGLRStateSet;
struct yyGLRState {
+ /** Type tag: always true. */
yybool yyisState;
+ /** Type tag for yysemantics. If true, yysval applies, otherwise
+ * yyfirstVal applies. */
yybool yyresolved;
+ /** Number of corresponding LALR(1) machine state. */
yyStateNum yylrState;
+ /** Preceding state in this stack */
yyGLRState* yypred;
+ /** Source position of the first token produced by my symbol */
size_t yyposn;
union {
+ /** First in a chain of alternative reductions producing the
+ * non-terminal corresponding to this state, threaded through
+ * yynext. */
yySemanticOption* yyfirstVal;
+ /** Semantic value for this state. */
YYSTYPE yysval;
} yysemantics;
+ /** Source location for this state. */
YYLTYPE yyloc;
};
};
struct yySemanticOption {
+ /** Type tag: always false. */
yybool yyisState;
+ /** Rule number for this reduction */
yyRuleNum yyrule;
+ /** The last RHS state in the list of states to be reduced. */
yyGLRState* yystate;
+ /** Next sibling in chain of options. To facilitate merging,
+ * options are chained in decreasing order by address. */
yySemanticOption* yynext;
};
+/** Type of the items in the GLR stack. The yyisState field
+ * indicates which item of the union is valid. */
union yyGLRStackItem {
yyGLRState yystate;
yySemanticOption yyoption;
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;
jmp_buf yyexception_buffer;
yyGLRStackItem* yyitems;
yyGLRStackItem* yynextFree;
- int yyspaceLeft;
+ size_t yyspaceLeft;
yyGLRState* yysplitPoint;
yyGLRState* yylastDeleted;
yyGLRStateSet yytops;
};
-static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize);
static void yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[);
-static void yyfreeGLRStack (yyGLRStack* yystack);
static void
-yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yyformat, ...)
+yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg)
{
yystack->yyerrflag = 1;
- if (yyformat != NULL)
- {
- char yymsg[256];
- va_list yyap;
- va_start (yyap, yyformat);
- vsprintf (yymsg, yyformat, yyap);
- yyerror (]b4_yyerror_args[yymsg);
- }
+ if (yymsg != NULL)
+ yyerror (]b4_yyerror_args[yymsg);
longjmp (yystack->yyexception_buffer, 1);
}
+static void
+yyStackOverflow (yyGLRStack* yystack]b4_pure_formals[)
+{
+ yyFail (yystack]b4_pure_args[, "parser stack overflow");
+}
+
#if YYDEBUG || YYERROR_VERBOSE
-/** A printable representation of TOKEN. Valid until next call to
- * tokenName. */
+/** A printable representation of TOKEN. */
static inline const char*
yytokenName (yySymbol yytoken)
{
+ if (yytoken == YYEMPTY)
+ return "";
+
return yytname[yytoken];
}
#endif
* yyerr for YYERROR, yyabort for YYABORT. */
static YYRESULTTAG
yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
- YYSTYPE* yyvalp, YYLTYPE* yylocp, yyGLRStack* yystack
+ YYSTYPE* yyvalp,
+ YYLTYPE* YYOPTIONAL_LOC (yylocp),
+ yyGLRStack* yystack
]b4_user_formals[)
{
yybool yynormal ATTRIBUTE_UNUSED = (yystack->yysplitPoint == NULL);
yylow = 1;
if (yyrhslen == 0)
- {
- *yyvalp = yyval_default;
- *yylocp = yyloc_default;
- }
+ *yyvalp = yyval_default;
else
- {
- *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
- YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);
- }
-
-]
+ *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
+ YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);
+]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = *yylocp;
+]])
switch (yyn)
{
b4_actions
+ default: break;
}
return yyok;
switch (yyn)
{
b4_mergers
+ default: break;
}
}
[
*/
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)
/* GLRStacks */
/** Initialize SET to a singleton set containing an empty stack. */
-static void
+static yybool
yyinitStateSet (yyGLRStateSet* yyset)
{
yyset->yysize = 1;
yyset->yycapacity = 16;
- yyset->yystates = YYMALLOC (16 * sizeof yyset->yystates[0]);
+ yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]);
+ if (! yyset->yystates)
+ return yyfalse;
yyset->yystates[0] = NULL;
+ return yytrue;
}
static void yyfreeStateSet (yyGLRStateSet* yyset)
/** Initialize STACK to a single empty stack, with total maximum
* capacity for all stacks of SIZE. */
-static void
+static yybool
yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
{
yystack->yyerrflag = 0;
yynerrs = 0;
yystack->yyspaceLeft = yysize;
yystack->yynextFree = yystack->yyitems =
- YYMALLOC (yysize * sizeof yystack->yynextFree[0]);
+ (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]);
yystack->yysplitPoint = NULL;
yystack->yylastDeleted = NULL;
- yyinitStateSet (&yystack->yytops);
+ return yyinitStateSet (&yystack->yytops) && yystack->yyitems;
}
#define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \
yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[)
{
#if YYSTACKEXPANDABLE
- yyGLRStack yynewStack;
+ yyGLRStackItem* yynewItems;
yyGLRStackItem* yyp0, *yyp1;
size_t yysize, yynewSize;
size_t yyn;
yysize = yystack->yynextFree - yystack->yyitems;
if (YYMAXDEPTH <= yysize)
- yyFail (yystack][]b4_pure_args[, "parser stack overflow");
+ yyStackOverflow (yystack]b4_pure_args[);
yynewSize = 2*yysize;
if (YYMAXDEPTH < yynewSize)
yynewSize = YYMAXDEPTH;
- yyinitGLRStack (&yynewStack, yynewSize);
- for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize;
+ yynewItems = (yyGLRStackItem*) YYMALLOC (yynewSize * sizeof yynewItems[0]);
+ if (! yynewItems)
+ yyStackOverflow (yystack]b4_pure_args[);
+ for (yyp0 = yystack->yyitems, yyp1 = yynewItems, yyn = yysize;
0 < yyn;
yyn -= 1, yyp0 += 1, yyp1 += 1)
{
}
}
if (yystack->yysplitPoint != NULL)
- yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewStack.yyitems,
+ yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewItems,
yystack->yysplitPoint, yystate);
for (yyn = 0; yyn < yystack->yytops.yysize; yyn += 1)
if (yystack->yytops.yystates[yyn] != NULL)
yystack->yytops.yystates[yyn] =
- YYRELOC (yystack->yyitems, yynewStack.yyitems,
+ YYRELOC (yystack->yyitems, yynewItems,
yystack->yytops.yystates[yyn], yystate);
YYFREE (yystack->yyitems);
- yystack->yyitems = yynewStack.yyitems;
- yystack->yynextFree = yynewStack.yynextFree + yysize;
- yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize;
+ yystack->yyitems = yynewItems;
+ yystack->yynextFree = yynewItems + yysize;
+ yystack->yyspaceLeft = yynewSize - yysize;
#else
- yyFail (yystack][]b4_pure_args[, "parser stack overflow");
+ yyStackOverflow (yystack]b4_pure_args[);
#endif
}
/** Invalidate stack #K in STACK. */
static inline void
-yymarkStackDeleted (yyGLRStack* yystack, int yyk)
+yymarkStackDeleted (yyGLRStack* yystack, size_t yyk)
{
if (yystack->yytops.yystates[yyk] != NULL)
yystack->yylastDeleted = yystack->yytops.yystates[yyk];
/** Shift to a new state on stack #K of STACK, corresponding to LR state
* LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
static inline void
-yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn,
+yyglrShift (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState,
+ size_t yyposn,
YYSTYPE yysval, YYLTYPE* yylocp]b4_user_formals[)
{
yyGLRStackItem* yynewItem;
* 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,
+yyglrShiftDefer (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState,
size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[)
{
yyGLRStackItem* yynewItem;
* and *LOCP to the computed location (if any). Return value is as
* for userAction. */
static inline YYRESULTTAG
-yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,
+yydoAction (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
{
int yynrhs = yyrhsLength (yyrule);
return yyok;
}
-static int
-yysplitStack (yyGLRStack* yystack, int yyk)
+static size_t
+yysplitStack (yyGLRStack* yystack, size_t yyk]b4_pure_formals[)
{
if (yystack->yysplitPoint == NULL)
{
}
if (yystack->yytops.yysize >= yystack->yytops.yycapacity)
{
- yystack->yytops.yycapacity *= 2;
- yystack->yytops.yystates =
- YYREALLOC (yystack->yytops.yystates,
- (yystack->yytops.yycapacity
- * sizeof yystack->yytops.yystates[0]));
+ yyGLRState** yynewStates;
+ if (! ((yystack->yytops.yycapacity
+ <= (YYSIZEMAX / (2 * sizeof yynewStates[0])))
+ && (yynewStates =
+ (yyGLRState**) YYREALLOC (yystack->yytops.yystates,
+ ((yystack->yytops.yycapacity *= 2)
+ * sizeof yynewStates[0])))))
+ yyStackOverflow (yystack]b4_pure_args[);
+ yystack->yytops.yystates = yynewStates;
}
yystack->yytops.yystates[yystack->yytops.yysize]
= yystack->yytops.yystates[yyk];
return yyfalse;
}
-/** Assuming identicalOptions (Y0,Y1), (destructively) merge the
- * alternative semantic values for the RHS-symbols of Y1 into the
- * corresponding semantic value sets of the symbols of Y0. */
+/** Assuming identicalOptions (Y0,Y1), destructively merge the
+ * alternative semantic values for the RHS-symbols of Y1 and Y0. */
static void
yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
{
yyn = yyrhsLength (yyy0->yyrule);
yyn > 0;
yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)
- if (yys0 == yys1)
- break;
- else if (! yys0->yyresolved && ! yys1->yyresolved)
- {
- yySemanticOption* yyz;
- for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL;
- yyz = yyz->yynext)
- continue;
- yyz->yynext = yys1->yysemantics.yyfirstVal;
- }
+ {
+ if (yys0 == yys1)
+ break;
+ else if (yys0->yyresolved)
+ {
+ yys1->yyresolved = yytrue;
+ yys1->yysemantics.yysval = yys0->yysemantics.yysval;
+ }
+ else if (yys1->yyresolved)
+ {
+ yys0->yyresolved = yytrue;
+ yys0->yysemantics.yysval = yys1->yysemantics.yysval;
+ }
+ else
+ {
+ yySemanticOption** yyz0p;
+ yySemanticOption* yyz1;
+ yyz0p = &yys0->yysemantics.yyfirstVal;
+ yyz1 = yys1->yysemantics.yyfirstVal;
+ while (yytrue)
+ {
+ if (yyz1 == *yyz0p || yyz1 == NULL)
+ break;
+ else if (*yyz0p == NULL)
+ {
+ *yyz0p = yyz1;
+ break;
+ }
+ else if (*yyz0p < yyz1)
+ {
+ yySemanticOption* yyz = *yyz0p;
+ *yyz0p = yyz1;
+ yyz1 = yyz1->yynext;
+ (*yyz0p)->yynext = yyz;
+ }
+ yyz0p = &(*yyz0p)->yynext;
+ }
+ yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal;
+ }
+ }
}
/** Y0 and Y1 represent two possible actions to take in a given
{
yySemanticOption* yybest;
yySemanticOption* yyp;
- int yymerge;
+ yybool yymerge;
yybest = yyoptionList;
- yymerge = 0;
+ yymerge = yyfalse;
for (yyp = yyoptionList->yynext; yyp != NULL; yyp = yyp->yynext)
{
if (yyidenticalOptions (yybest, yyp))
yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[);
break;
case 1:
- yymerge = 1;
+ yymerge = yytrue;
break;
case 2:
break;
case 3:
yybest = yyp;
- yymerge = 0;
+ yymerge = yyfalse;
break;
}
}
}
static YYRESULTTAG
-yyprocessOneStack (yyGLRStack* yystack, int yyk,
+yyprocessOneStack (yyGLRStack* yystack, size_t yyk,
size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp
- ]b4_user_formals[)
+ ]b4_pure_formals[)
{
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;
- YYDPRINTF ((stderr, "Stack %d Entering state %d\n", yyk, yystate));
+ YYDPRINTF ((stderr, "Stack %lu Entering state %d\n",
+ (unsigned long int) yyk, yystate));
YYASSERT (yystate != YYFINAL);
yyrule = yydefaultAction (yystate);
if (yyrule == 0)
{
- YYDPRINTF ((stderr, "Stack %d dies.\n", yyk));
+ YYDPRINTF ((stderr, "Stack %lu dies.\n",
+ (unsigned long int) yyk));
yymarkStackDeleted (yystack, yyk);
return yyok;
}
YYDPRINTF ((stderr, "Reading a token: "));
yychar = YYLEX;
*yytokenp = YYTRANSLATE (yychar);
- YYDSYMPRINTF ("Next token is", *yytokenp, yylvalp, yyllocp);
+ YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
+ YYDPRINTF ((stderr, "\n"));
}
yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
while (*yyconflicts != 0)
{
- int yynewStack = yysplitStack (yystack, yyk);
- YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n",
- yynewStack, yyk));
+ size_t yynewStack = yysplitStack (yystack, yyk]b4_pure_args[);
+ YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n",
+ (unsigned long int) yynewStack,
+ (unsigned long int) yyk));
YYCHK (yyglrReduce (yystack, yynewStack,
*yyconflicts, yyfalse]b4_lpure_args[));
YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn,
- yylvalp, yyllocp]b4_user_args[));
+ yylvalp, yyllocp]b4_pure_args[));
yyconflicts += 1;
}
if (yyisShiftAction (yyaction))
{
- YYDPRINTF ((stderr, "Shifting token %s on stack %d, ",
- yytokenName (*yytokenp), yyk));
+ YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yyk));
+ YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp);
yyglrShift (yystack, yyk, yyaction, yyposn+1,
*yylvalp, yyllocp]b4_user_args[);
- YYDPRINTF ((stderr, "which is now in state #%d\n",
+ YYDPRINTF ((stderr, ", now in state #%d\n",
yystack->yytops.yystates[yyk]->yylrState));
break;
}
else if (yyisErrorAction (yyaction))
{
- YYDPRINTF ((stderr, "Stack %d dies.\n", yyk));
+ YYDPRINTF ((stderr, "Stack %lu dies.\n",
+ (unsigned long int) yyk));
yymarkStackDeleted (yystack, yyk);
break;
}
yyn = yypact[yystack->yytops.yystates[0]->yylrState];
if (YYPACT_NINF < yyn && yyn < YYLAST)
{
- size_t yysize = 0;
- const char* yyprefix;
- char* yymsg;
+ size_t yysize0 = strlen (yytokenName (*yytokenp));
+ size_t yysize = yysize0;
+ size_t yysize1;
+ yybool yysize_overflow = yyfalse;
+ char* yymsg = NULL;
+ enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+ 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;
int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
- int yycount = 0;
+ int yycount = 1;
+
+ yyarg[0] = yytokenName (*yytokenp);
+ yyfmt = yystpcpy (yyformat, yyunexpected);
- yyprefix = ", expecting ";
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
- yysize += strlen (yyprefix) + strlen (yytokenName (yyx));
- yycount += 1;
- if (yycount == 5)
+ if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
{
- yysize = 0;
+ yycount = 1;
+ yysize = yysize0;
+ yyformat[sizeof yyunexpected - 1] = '\0';
break;
}
- yyprefix = " or ";
+ yyarg[yycount++] = yytokenName (yyx);
+ yysize1 = yysize + strlen (yytokenName (yyx));
+ yysize_overflow |= yysize1 < yysize;
+ yysize = yysize1;
+ yyfmt = yystpcpy (yyfmt, yyprefix);
+ yyprefix = yyor;
}
- yysize += (sizeof ("syntax error, unexpected ")
- + strlen (yytokenName (*yytokenp)));
- yymsg = YYMALLOC (yysize);
- if (yymsg != 0)
+
+ yyf = yyformat;
+ yysize1 = yysize + (yyfmt - yyformat);
+ yysize_overflow |= yysize1 < yysize;
+ yysize = yysize1;
+
+ if (!yysize_overflow)
+ yymsg = (char *) YYMALLOC (yysize);
+
+ if (yymsg)
{
- char* yyp = yymsg;
- sprintf (yyp, "syntax error, unexpected %s",
- yytokenName (*yytokenp));
- yyp += strlen (yyp);
- if (yycount < 5)
+ char *yyp = yymsg;
+ int yyi = 0;
+ while ((*yyp = *yyf))
{
- 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 ";
- }
+ if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+ {
+ yyp = yystpcpy (yyp, yyarg[yyi++]);
+ yyf += 2;
+ }
+ else
+ {
+ yyp++;
+ yyf++;
+ }
}
yyerror (]b4_lyyerror_args[yymsg);
YYFREE (yymsg);
/* 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
yyrecoverSyntaxError (yyGLRStack* yystack,
- YYSTYPE* yylvalp, YYLTYPE* yyllocp]b4_user_formals[)
+ YYSTYPE* yylvalp,
+ YYLTYPE* YYOPTIONAL_LOC (yyllocp)
+ ]b4_user_formals[)
{
yySymbol* const yytokenp = yystack->yytokenp;
size_t yyk;
while (yystack->yytops.yystates[0] != NULL)
{
yyGLRState *yys = yystack->yytops.yystates[0];
- YYDSYMPRINTF ("Error: popping",
- yystos[yys->yylrState],
- &yys->yysemantics.yysval, &yys->yyloc);
- yydestruct (yystos[yys->yylrState],
+]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;
yyFail (yystack][]b4_lpure_args[, NULL);
}
if (*yytokenp != YYEMPTY)
- {
- YYDSYMPRINTF ("Error: discarding", *yytokenp, yylvalp, yyllocp);
- yydestruct (*yytokenp, yylvalp]b4_location_if([, yyllocp])[);
+ {]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);
- YYDSYMPRINTF ("Next token is", *yytokenp, yylvalp, yyllocp);
+ YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
+ YYDPRINTF ((stderr, "\n"));
yyj = yypact[yystack->yytops.yystates[0]->yylrState];
if (yyis_pact_ninf (yyj))
return;
if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
&& yyisShiftAction (yytable[yyj]))
{
- YYDPRINTF ((stderr, "Shifting error token, "));
+ /* 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);
+ YYDPRINTF ((stderr, "\n"));
yyglrShift (yystack, 0, yytable[yyj],
- yys->yyposn, *yylvalp, yyllocp]b4_user_args[);
+ yys->yyposn, *yylvalp, &yyerrloc]b4_user_args[);
+ yys = yystack->yytops.yystates[0];
break;
}
}
- YYDSYMPRINTF ("Error: popping",
- yystos[yys->yylrState],
- &yys->yysemantics.yysval, &yys->yyloc);
- yydestruct (yystos[yys->yylrState],
+]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;
YYSTYPE* const yylvalp = &yylval;
YYLTYPE* const yyllocp = &yylloc;
- yyinitGLRStack (&yystack, YYINITDEPTH);
- yystack.yytokenp = &yytoken;
-
YYDPRINTF ((stderr, "Starting parse\n"));
+ yytoken = YYEMPTY;
+
if (setjmp (yystack.yyexception_buffer) != 0)
goto yyDone;
- yyglrShift (&yystack, 0, 0, 0, yyval_default, &yyloc_default]b4_user_args[);
- yytoken = YYEMPTY;
+ if (! yyinitGLRStack (&yystack, YYINITDEPTH))
+ goto yyDone;
+ yystack.yytokenp = &yytoken;
+
+ 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], [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])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[);
yyposn = 0;
while (yytrue)
{
yyRuleNum yyrule;
int yyaction;
- const short* yyconflicts;
+ const short int* yyconflicts;
yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;
YYDPRINTF ((stderr, "Entering state %d\n", yystate));
yyrule = yydefaultAction (yystate);
if (yyrule == 0)
{
+]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}
YYDPRINTF ((stderr, "Reading a token: "));
yychar = YYLEX;
yytoken = YYTRANSLATE (yychar);
- YYDSYMPRINTF ("Next token is", yytoken, yylvalp, yyllocp);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, yylvalp, yyllocp);
+ YYDPRINTF ((stderr, "\n"));
}
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);
+ YYDPRINTF ((stderr, "\n"));
if (yytoken != YYEOF)
yytoken = YYEMPTY;
yyposn += 1;
}
else if (yyisErrorAction (yyaction))
{
+]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}
while (yytrue)
{
- int yys;
- int yyn = yystack.yytops.yysize;
+ size_t yys;
+ size_t yyn = yystack.yytops.yysize;
for (yys = 0; yys < yyn; yys += 1)
YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn,
- yylvalp, yyllocp]b4_user_args[));
+ yylvalp, yyllocp]b4_lpure_args[));
yytoken = YYEMPTY;
yyposn += 1;
yyremoveDeletes (&yystack);
yyFail (&yystack][]b4_lpure_args[, "syntax error");
YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
+]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}
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 */
-static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED;
+#ifdef YYDEBUG
+static void yypstack (yyGLRStack* yystack, size_t yyk) ATTRIBUTE_UNUSED;
static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED;
static void
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
-yypstack (yyGLRStack* yystack, int yyk)
+yypstack (yyGLRStack* yystack, size_t yyk)
{
yypstates (yystack->yytops.yystates[yyk]);
}
size_t yyi;
for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1)
{
- fprintf (stderr, "%3lu. ", (unsigned long) (yyp - yystack->yyitems));
+ 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,
- (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",
- (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,
- (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, "%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");
}
+#endif
]
b4_epilogue
m4_if(b4_defines_flag, 0, [],
[@output @output_header_name@
-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003])
+b4_copyright([Skeleton parser for GLR parsing with Bison],
+ [2002, 2003, 2004, 2005])
b4_token_defines(b4_tokens)
# define YYLTYPE_IS_TRIVIAL 1
#endif
-b4_location_if([m4_if(b4_pure, [0],
+b4_location_if([b4_pure_if([],
[extern YYLTYPE b4_prefix[]lloc;])
])
])
projects / bison.git / blobdiff