This special exception was added by the Free Software Foundation
in version 1.24 of Bison. */
-/* This is the parser code that is written into each bison parser
- when the %semantic_parser declaration is not specified in the grammar.
- It was written by Richard Stallman by simplifying the hairy parser
- used when %semantic_parser is specified. */
+/* This is the parser code that is written into each bison parser when
+ the %semantic_parser declaration is not specified in the grammar.
+ It was written by Richard Stallman by simplifying the hairy parser
+ used when %semantic_parser is specified. */
#ifndef YYSTACK_USE_ALLOCA
# ifdef alloca
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrlab1
-/* Like YYERROR except do call yyerror.
- This remains here temporarily to ease the
- transition to the new meaning of YYERROR, for GCC.
+/* Like YYERROR except do call yyerror. This remains here temporarily
+ to ease the transition to the new meaning of YYERROR, for GCC.
Once GCC version 2 has supplanted version 1, this can go. */
#define YYFAIL goto yyerrlab
#define YYRECOVERING() (!!yyerrstatus)
-#define YYBACKUP(token, value) \
+#define YYBACKUP(Token, Value) \
do \
if (yychar == YYEMPTY && yylen == 1) \
- { yychar = (token), yylval = (value); \
+ { \
+ yychar = (Token); \
+ yylval = (Value); \
yychar1 = YYTRANSLATE (yychar); \
YYPOPSTACK; \
goto yybackup; \
} \
else \
- { yyerror ("syntax error: cannot back up"); YYERROR; } \
+ { \
+ yyerror ("syntax error: cannot back up"); \
+ YYERROR; \
+ } \
while (0)
#define YYTERROR 1
#define YYERRCODE 256
#ifndef YYPURE
-# define YYLEX yylex()
+# define YYLEX yylex ()
#endif
#ifdef YYPURE
# ifdef YYLSP_NEEDED
# ifdef YYLEX_PARAM
-# define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
+# define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM)
# else
-# define YYLEX yylex(&yylval, &yylloc)
+# define YYLEX yylex (&yylval, &yylloc)
# endif
-# else /* not YYLSP_NEEDED */
+# else /* !YYLSP_NEEDED */
# ifdef YYLEX_PARAM
-# define YYLEX yylex(&yylval, YYLEX_PARAM)
+# define YYLEX yylex (&yylval, YYLEX_PARAM)
# else
-# define YYLEX yylex(&yylval)
+# define YYLEX yylex (&yylval)
# endif
-# endif /* not YYLSP_NEEDED */
+# endif /* !YYLSP_NEEDED */
#endif
/* If nonreentrant, generate the variables here. */
#ifndef YYPURE
/* The lookahead symbol. */
-int yychar;
+int yychar;
/* The semantic value of the lookahead symbol. */
-YYSTYPE yylval;
+YYSTYPE yylval;
# ifdef YYLSP_NEEDED
/* Location data for the lookahead symbol. */
/* Number of parse errors so far. */
int yynerrs;
-#endif /* not YYPURE */
-
-
-#if YYDEBUG != 0
-int yydebug; /* nonzero means print parse trace */
-
- /* [The following comment makes no sense to me. Could someone
- clarify it? --akim] Since this is uninitialized, it does not
- stop multiple parsers from coexisting. */
-#else
- /* To avoid crippling this file with `#if YYDEBUG', define `yydebug'
- as `0', so that the `if (yydebug)' be removed as dead code. */
-# define yydebug 0
-#endif
-
-/* YYINITDEPTH indicates the initial size of the parser's stacks */
+#endif /* !YYPURE */
+/* Enable debugging if requested. */
+#if YYDEBUG
+# define YYDPRINTF(Args) \
+do { \
+ if (yydebug) \
+ fprintf Args; \
+} while (0)
+/* Nonzero means print parse trace. [The following comment makes no
+ sense to me. Could someone clarify it? --akim] Since this is
+ uninitialized, it does not stop multiple parsers from coexisting.
+ */
+int yydebug;
+#else /* !YYDEBUG */
+# define YYDPRINTF(Args)
+#endif /* !YYDEBUG */
+
+/* YYINITDEPTH -- initial size of the parser's stacks. */
#ifndef YYINITDEPTH
# define YYINITDEPTH 200
#endif
-/* YYMAXDEPTH is the maximum size the stacks can grow to
- (effective only if the built-in stack extension method is used). */
-
+/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
+ if the built-in stack extension method is used). */
#if YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif
of type size_t, but it can handle unsigned int. */
#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
-# define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
+# define __yy_memcpy(To, From, Count) __builtin_memcpy (To, From, Count)
#else /* not GNU C or C++ */
# ifndef __cplusplus
# ifdef __cplusplus
# define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
# define YYPARSE_PARAM_DECL
-# else /* not __cplusplus */
+# else /* !__cplusplus */
# define YYPARSE_PARAM_ARG YYPARSE_PARAM
# define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
-# endif /* not __cplusplus */
-#else /* not YYPARSE_PARAM */
+# endif /* !__cplusplus */
+#else /* !YYPARSE_PARAM */
# define YYPARSE_PARAM_ARG
# define YYPARSE_PARAM_DECL
-#endif /* not YYPARSE_PARAM */
+#endif /* !YYPARSE_PARAM */
/* Prevent warning if -Wstrict-prototypes. */
#ifdef __GNUC__
#endif
int
-yyparse(YYPARSE_PARAM_ARG)
+yyparse (YYPARSE_PARAM_ARG)
YYPARSE_PARAM_DECL
{
register int yystate;
#endif
- /* The variable used to return semantic values from the action
- routines. */
+ /* The variables used to return semantic value and location from the
+ action routines. */
YYSTYPE yyval;
+# ifdef YYLSP_NEEDED
+ YYLTYPE yyloc;
+# endif
+ /* When reducing, the number of symbols on the RHS of the reduced
+ rule. */
int yylen;
- if (yydebug)
- fprintf (stderr, "Starting parse\n");
+ YYDPRINTF ((stderr, "Starting parse\n"));
yystate = 0;
yyerrstatus = 0;
yylsp = yyls;
#endif
-/* Push a new state, which is found in yystate . */
-/* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks. */
-yynewstate:
+/*------------------------------------------------------------.
+| yynewstate -- Push a new state, which is found in yystate. |
+`------------------------------------------------------------*/
+yynewstate:
+ /* In all cases, when you get here, the value and location stacks
+ have just been pushed. so pushing a state here evens the stacks.
+ */
*++yyssp = yystate;
if (yyssp >= yyss + yystacksize - 1)
{
- /* Give user a chance to reallocate the stack */
- /* Use copies of these so that the &'s don't force the real ones into memory. */
+ /* Give user a chance to reallocate the stack. Use copies of
+ these so that the &'s don't force the real ones into memory.
+ */
YYSTYPE *yyvs1 = yyvs;
short *yyss1 = yyss;
#ifdef YYLSP_NEEDED
/* Extend the stack our own way. */
if (yystacksize >= YYMAXDEPTH)
{
- yyerror("parser stack overflow");
+ yyerror ("parser stack overflow");
if (yyfree_stacks)
{
free (yyss);
yylsp = yyls + size - 1;
#endif
- if (yydebug)
- fprintf (stderr, "Stack size increased to %d\n", yystacksize);
+ YYDPRINTF ((stderr, "Stack size increased to %d\n", yystacksize));
if (yyssp >= yyss + yystacksize - 1)
YYABORT;
}
- if (yydebug)
- fprintf (stderr, "Entering state %d\n", yystate);
+ YYDPRINTF ((stderr, "Entering state %d\n", yystate));
goto yybackup;
- yybackup:
+
+
+/*-----------.
+| yybackup. |
+`-----------*/
+yybackup:
/* Do appropriate processing given the current state. */
/* Read a lookahead token if we need one and don't already have one. */
if (yychar == YYEMPTY)
{
- if (yydebug)
- fprintf (stderr, "Reading a token: ");
+ YYDPRINTF ((stderr, "Reading a token: "));
yychar = YYLEX;
}
yychar1 = 0;
yychar = YYEOF; /* Don't call YYLEX any more */
- if (yydebug)
- fprintf (stderr, "Now at end of input.\n");
+ YYDPRINTF ((stderr, "Now at end of input.\n"));
}
else
{
- yychar1 = YYTRANSLATE(yychar);
+ yychar1 = YYTRANSLATE (yychar);
+#if YYDEBUG
+ /* We have to keep this `#if YYDEBUG', since we use variables
+ which are defined only if `YYDEBUG' is set. */
if (yydebug)
{
fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
- /* Give the individual parser a way to print the precise meaning
- of a token, for further debugging info. */
+ /* Give the individual parser a way to print the precise
+ meaning of a token, for further debugging info. */
# ifdef YYPRINT
YYPRINT (stderr, yychar, yylval);
# endif
fprintf (stderr, ")\n");
}
+#endif
}
yyn += yychar1;
YYACCEPT;
/* Shift the lookahead token. */
-
- if (yydebug)
- fprintf (stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
+ YYDPRINTF ((stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]));
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
*++yylsp = yylloc;
#endif
- /* count tokens shifted since error; after three, turn off error status. */
- if (yyerrstatus) yyerrstatus--;
+ /* Count tokens shifted since error; after three, turn off error
+ status. */
+ if (yyerrstatus)
+ yyerrstatus--;
yystate = yyn;
goto yynewstate;
-/* Do the default action for the current state. */
-yydefault:
+/*-----------------------------------------------------------.
+| yydefault -- do the default action for the current state. |
+`-----------------------------------------------------------*/
+yydefault:
yyn = yydefact[yystate];
if (yyn == 0)
goto yyerrlab;
+ goto yyreduce;
-/* Do a reduction. yyn is the number of a rule to reduce with. */
+
+/*-----------------------------.
+| yyreduce -- Do a reduction. |
+`-----------------------------*/
yyreduce:
+ /* yyn is the number of a rule to reduce with. */
yylen = yyr2[yyn];
+
+ /* If YYLEN is nonzero, implement the default value of the action:
+ `{dollar}{dollar} = {dollar}1'.
+
+ Otherwise, the following line sets YYVAL to the semantic value of
+ the lookahead token. This behavior is undocumented and Bison
+ users should not rely upon it. Assigning to YYVAL
+ unconditionally makes the parser a bit smaller, and it avoids a
+ GCC warning that YYVAL may be used uninitialized. */
+ yyval = yyvsp[1-yylen];
+#ifdef YYLSP_NEEDED
+ /* Implement default location. If the rhs is empty, extend YYLOC to
+ YYLLOC, which corresponds to the current token, otherwise
+ implement `@{dollar} = Starts at @1, ends at @YYLEN'. */
if (yylen > 0)
- yyval = yyvsp[1-yylen]; /* implement default value of the action */
+ {
+ yyloc = yylsp[1-yylen];
+ yyloc.last_line = yylsp[0].last_line;
+ yyloc.last_column = yylsp[0].last_column;
+ }
+ else
+ {
+ yyloc.last_line = yylsp[0].last_line;
+ yyloc.last_column = yylsp[0].last_column;
+ yyloc.text = 0;
+ }
+#endif
#if YYDEBUG
/* We have to keep this `#if YYDEBUG', since we use variables which
fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
}
#endif
-$ /* the action file gets copied in in place of this dollarsign */
+$ /* The action file replaces this line marked with this dollarsign. */
#line
\f
yyvsp -= yylen;
yylsp -= yylen;
#endif
+#if YYDEBUG
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
+#endif
*++yyvsp = yyval;
-
#ifdef YYLSP_NEEDED
- yylsp++;
- if (yylen == 0)
- {
- yylsp->first_line = yylloc.first_line;
- yylsp->first_column = yylloc.first_column;
- yylsp->last_line = (yylsp-1)->last_line;
- yylsp->last_column = (yylsp-1)->last_column;
- yylsp->text = 0;
- }
- else
- {
- yylsp->last_line = (yylsp+yylen-1)->last_line;
- yylsp->last_column = (yylsp+yylen-1)->last_column;
- }
+ *++yylsp = yyloc;
#endif
/* Now `shift' the result of the reduction. Determine what state
goto yynewstate;
-yyerrlab: /* here on detecting error */
- if (! yyerrstatus)
- /* If not already recovering from an error, report this error. */
+/*------------------------------------.
+| yyerrlab -- here on detecting error |
+`------------------------------------*/
+yyerrlab:
+ /* If not already recovering from an error, report this error. */
+ if (!yyerrstatus)
{
++yynerrs;
count = 0;
/* Start X at -yyn if nec to avoid negative indexes in yycheck. */
for (x = (yyn < 0 ? -yyn : 0);
- x < (sizeof(yytname) / sizeof(char *)); x++)
+ x < (sizeof (yytname) / sizeof (char *)); x++)
if (yycheck[x + yyn] == x)
- size += strlen(yytname[x]) + 15, count++;
- msg = (char *) malloc(size + 15);
+ size += strlen (yytname[x]) + 15, count++;
+ size += strlen ("parse error, unexpected `") + 1;
+ size += strlen (yytname[YYTRANSLATE (yychar)]);
+ msg = (char *) malloc (size);
if (msg != 0)
{
- strcpy(msg, "parse error");
+ strcpy (msg, "parse error, unexpected `");
+ strcat (msg, yytname[YYTRANSLATE (yychar)]);
+ strcat (msg, "'");
if (count < 5)
{
count = 0;
for (x = (yyn < 0 ? -yyn : 0);
- x < (sizeof(yytname) / sizeof(char *)); x++)
+ x < (sizeof (yytname) / sizeof (char *)); x++)
if (yycheck[x + yyn] == x)
{
- strcat(msg, count == 0 ? ", expecting `" : " or `");
- strcat(msg, yytname[x]);
- strcat(msg, "'");
+ strcat (msg, count == 0 ? ", expecting `" : " or `");
+ strcat (msg, yytname[x]);
+ strcat (msg, "'");
count++;
}
}
- yyerror(msg);
- free(msg);
+ yyerror (msg);
+ free (msg);
}
else
yyerror ("parse error; also virtual memory exceeded");
}
else
#endif /* YYERROR_VERBOSE */
- yyerror("parse error");
+ yyerror ("parse error");
}
-
goto yyerrlab1;
-yyerrlab1: /* here on error raised explicitly by an action */
+
+/*--------------------------------------------------.
+| yyerrlab1 -- error raised explicitly by an action |
+`--------------------------------------------------*/
+yyerrlab1:
if (yyerrstatus == 3)
{
- /* if just tried and failed to reuse lookahead token after an error, discard it. */
+ /* If just tried and failed to reuse lookahead token after an
+ error, discard it. */
/* return failure if at end of input */
if (yychar == YYEOF)
YYABORT;
-
- if (yydebug)
- fprintf (stderr, "Discarding token %d (%s).\n",
- yychar, yytname[yychar1]);
-
+ YYDPRINTF ((stderr, "Discarding token %d (%s).\n",
+ yychar, yytname[yychar1]));
yychar = YYEMPTY;
}
- /* Else will try to reuse lookahead token
- after shifting the error token. */
+ /* Else will try to reuse lookahead token after shifting the error
+ token. */
yyerrstatus = 3; /* Each real token shifted decrements this */
goto yyerrhandle;
-yyerrdefault: /* current state does not do anything special for the error token. */
+/*-------------------------------------------------------------------.
+| yyerrdefault -- current state does not do anything special for the |
+| error token. |
+`-------------------------------------------------------------------*/
+yyerrdefault:
#if 0
/* This is wrong; only states that explicitly want error tokens
should shift them. */
- yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
- if (yyn) goto yydefault;
+
+ /* If its default is to accept any token, ok. Otherwise pop it. */
+ yyn = yydefact[yystate];
+ if (yyn)
+ goto yydefault;
#endif
-yyerrpop: /* pop the current state because it cannot handle the error token */
- if (yyssp == yyss) YYABORT;
+/*---------------------------------------------------------------.
+| yyerrpop -- pop the current state because it cannot handle the |
+| error token |
+`---------------------------------------------------------------*/
+yyerrpop:
+ if (yyssp == yyss)
+ YYABORT;
yyvsp--;
yystate = *--yyssp;
#ifdef YYLSP_NEEDED
yylsp--;
#endif
+#if YYDEBUG
if (yydebug)
{
short *ssp1 = yyss - 1;
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
+#endif
+/*--------------.
+| yyerrhandle. |
+`--------------*/
yyerrhandle:
-
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yyerrdefault;
if (yyn == YYFINAL)
YYACCEPT;
- if (yydebug)
- fprintf (stderr, "Shifting error token, ");
+ YYDPRINTF ((stderr, "Shifting error token, "));
*++yyvsp = yylval;
#ifdef YYLSP_NEEDED
yystate = yyn;
goto yynewstate;
- yyacceptlab:
- /* YYACCEPT comes here. */
+
+/*-------------------------------------.
+| yyacceptlab -- YYACCEPT comes here. |
+`-------------------------------------*/
+yyacceptlab:
if (yyfree_stacks)
{
free (yyss);
}
return 0;
- yyabortlab:
- /* YYABORT comes here. */
+
+/*-----------------------------------.
+| yyabortlab -- YYABORT comes here. |
+`-----------------------------------*/
+yyabortlab:
if (yyfree_stacks)
{
free (yyss);
projects / bison.git / blobdiff