m4_divert(-1) -*- C -*-
# Yacc compatible skeleton for Bison
-# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004
+
+# Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# --------------------
# Expansion of $<TYPE>$.
m4_define([b4_lhs_value],
-[yyval[]m4_ifval([$1], [.$1])])
+[(yyval[]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@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3])])
+[(yyvsp@{m4_eval([$2 - $1])@}m4_ifval([$3], [.$3]))])
# -----------------
# Expansion of @$.
m4_define([b4_lhs_location],
-[yyloc])
+[(yyloc)])
# b4_rhs_location(RULE-LENGTH, NUM)
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
-[yylsp@{m4_eval([$2 - $1])@}])
+[(yylsp@{m4_eval([$2 - $1])@})])
]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
# ifdef YYSTACK_USE_ALLOCA
# if YYSTACK_USE_ALLOCA
-# define YYSTACK_ALLOC alloca
-# endif
-# else
-# if defined (alloca) || defined (_ALLOCA_H)
-# define YYSTACK_ALLOC alloca
-# else
# ifdef __GNUC__
# define YYSTACK_ALLOC __builtin_alloca
+# else
+# define YYSTACK_ALLOC alloca
# endif
# endif
# endif
# define YYCOPY(To, From, Count) \
do \
{ \
- register YYSIZE_T yyi; \
+ YYSIZE_T yyi; \
for (yyi = 0; yyi < (Count); yyi++) \
(To)[yyi] = (From)[yyi]; \
} \
} \
while (0)
+
#define YYTERROR 1
#define YYERRCODE 256
-/* 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). */
+
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N) \
- ((Current).first_line = (Rhs)[1].first_line, \
- (Current).first_column = (Rhs)[1].first_column, \
- (Current).last_line = (Rhs)[N].last_line, \
- (Current).last_column = (Rhs)[N].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)
+#endif
+
+
+/* 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. */
+
+#ifndef YY_LOCATION_PRINT
+# if YYLTYPE_IS_TRIVIAL
+# define YY_LOCATION_PRINT(File, Loc) \
+ fprintf (File, "%d.%d-%d.%d", \
+ (Loc).first_line, (Loc).first_column, \
+ (Loc).last_line, (Loc).last_column)
+# else
+# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
#endif
+
/* YYLEX -- calling `yylex' with the right arguments. */
#ifdef YYLEX_PARAM
YYFPRINTF Args; \
} while (0)
-# 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])[); \
+ Type, Value]b4_location_if([, Location])[); \
YYFPRINTF (stderr, "\n"); \
} \
} while (0)
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
-# define YYDSYMPRINT(Args)
-# define YYDSYMPRINTF(Title, Token, Value, Location)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */
SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
evaluated with infinite-precision integer arithmetic. */
-#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
-# undef YYMAXDEPTH
-#endif
-
#ifndef YYMAXDEPTH
# define YYMAXDEPTH ]b4_stack_depth_max[
#endif
const char *yystr;
# endif
{
- register const char *yys = yystr;
+ const char *yys = yystr;
while (*yys++ != '\0')
continue;
const char *yysrc;
# endif
{
- register char *yyd = yydest;
- register const char *yys = yysrc;
+ char *yyd = yydest;
+ const char *yys = yysrc;
while ((*yyd++ = *yys++) != '\0')
continue;
#endif
{[
]b4_pure_if([b4_declare_parser_variables])[
- register int yystate;
- register int yyn;
+ int yystate;
+ int yyn;
int yyresult;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
/* The state stack. */
short int yyssa[YYINITDEPTH];
short int *yyss = yyssa;
- register short int *yyssp;
+ short int *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
YYSTYPE *yyvs = yyvsa;
- register YYSTYPE *yyvsp;
+ YYSTYPE *yyvsp;
]b4_location_if(
[[ /* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
- YYLTYPE *yylerrsp;]])[
+ /* The locations where the error started and ended. */
+ YYLTYPE yyerror_range[2];]])[
#define YYPOPSTACK (yyvsp--, yyssp--]b4_location_if([, yylsp--])[)
yyssp = yyss;
yyvsp = yyvs;
-]b4_location_if([ yylsp = yyls;])[
-]m4_ifdef([b4_initial_action], [
-m4_pushdef([b4_at_dollar], [(*yylsp)])dnl
-m4_pushdef([b4_dollar_dollar], [(*yyvsp)])dnl
+]b4_location_if([[ yylsp = yyls;
+#if YYLTYPE_IS_TRIVIAL
+ /* Initialize the default location before parsing starts. */
+ yylloc.first_line = yylloc.last_line = 1;
+ yylloc.first_column = yylloc.last_column = 0;
+#endif
+]])
+m4_ifdef([b4_initial_action], [
+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 yacc.c. */
b4_syncline([@oline@], [@ofile@])])dnl
-
+[
+ yyvsp[0] = yylval;
+]b4_location_if([[ yylsp[0] = yylloc;
+]])
[ goto yysetstate;
/*------------------------------------------------------------.
else
{
yytoken = YYTRANSLATE (yychar);
- YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
}
/* If the proper action on seeing token YYTOKEN is to reduce or to
YYACCEPT;
/* Shift the look-ahead token. */
- YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
yyval = yyvsp[1-yylen];
]b4_location_if(
-[ /* Default location. */
- YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);])[
+[[ /* Default location. */
+ YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);]])[
YY_REDUCE_PRINT (yyn);
switch (yyn)
]{
b4_actions
+ default: break;
}
/* Line __line__ of yacc.c. */
yyerror (]b4_yyerror_args["syntax error");
}
-]b4_location_if([ yylerrsp = yylsp;])[
+]b4_location_if([[ yyerror_range[0] = yylloc;]])[
if (yyerrstatus == 3)
{
if (yychar == YYEOF)
for (;;)
{
+]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
YYPOPSTACK;
if (yyssp == yyss)
YYABORT;
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
+ yydestruct ("Error: popping",
+ yystos[*yyssp], yyvsp]b4_location_if([, yylsp])[);
}
}
else
{
- YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
- yydestruct (yytoken, &yylval]b4_location_if([, &yylloc])[);
+ yydestruct ("Error: discarding", yytoken, &yylval]b4_location_if([, &yylloc])[);
yychar = YYEMPTY;
-]b4_location_if([ *++yylerrsp = yylloc;])[
}
}
`---------------------------------------------------*/
yyerrorlab:
-#ifdef __GNUC__
- /* Pacify GCC when the user code never invokes YYERROR and the label
- yyerrorlab therefore never appears in user code. */
+ /* Pacify compilers like GCC when the user code never invokes
+ YYERROR and the label yyerrorlab therefore never appears in user
+ code. */
if (0)
goto yyerrorlab;
-#endif
- yyvsp -= yylen;
+]b4_location_if([[ yyerror_range[0] = yylsp[1-yylen];
+ yylsp -= yylen;
+ ]])[yyvsp -= yylen;
yyssp -= yylen;
yystate = *yyssp;
- ]b4_location_if([yylerrsp = yylsp;
- *++yylerrsp = yyloc;
- yylsp -= yylen;
- ])[goto yyerrlab1;
+ goto yyerrlab1;
/*-------------------------------------------------------------.
if (yyssp == yyss)
YYABORT;
- YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
- yydestruct (yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
+]b4_location_if([[ yyerror_range[0] = *yylsp;]])[
+ yydestruct ("Error: popping", yystos[yystate], yyvsp]b4_location_if([, yylsp])[);
YYPOPSTACK;
yystate = *yyssp;
YY_STACK_PRINT (yyss, yyssp);
if (yyn == YYFINAL)
YYACCEPT;
- YYDPRINTF ((stderr, "Shifting error token, "));
-
*++yyvsp = yylval;
-]b4_location_if([ YYLLOC_DEFAULT (yyloc, yylsp, yylerrsp - yylsp);
- *++yylsp = yyloc;])[
+]b4_location_if([[
+ yyerror_range[1] = yylloc;
+ /* Using YYLLOC is tempting, but would change the location of
+ the look-ahead. YYLOC is available though. */
+ YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
+ *++yylsp = yyloc;]])[
+
+ /* Shift the error token. */
+ YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
yystate = yyn;
goto yynewstate;
| yyabortlab -- YYABORT comes here. |
`-----------------------------------*/
yyabortlab:
+ yydestruct ("Error: discarding lookahead",
+ yytoken, &yylval]b4_location_if([, &yylloc])[);
+ yychar = YYEMPTY;
yyresult = 1;
goto yyreturn;
projects / bison.git / blobdiff