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* src/bison.s1 [!YYDEBUG]: Define yydebug to 0. This allows to

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remove most `#if YYDEBUG != 0', since `if (yydebug)' is enough.
One `#if YYDEBUG' remains, since it uses variables which are
defined only if `YYDEBUG != 0'.
This commit is contained in:
Akim Demaille
2000-03-16 16:02:16 +00:00
parent bb10be5408
commit 0de741ca66
3 changed files with 49 additions and 68 deletions
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7
ChangeLog
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@@ -1,3 +1,10 @@
2000-03-16 Akim Demaille <akim@epita.fr>
* src/bison.s1 [!YYDEBUG]: Define yydebug to 0. This allows to
remove most `#if YYDEBUG != 0', since `if (yydebug)' is enough.
One `#if YYDEBUG' remains, since it uses variables which are
defined only if `YYDEBUG != 0'.
2000-03-16 Akim Demaille <akim@epita.fr>
* src/bison.s1 (yyparse): Reorganize the definitions of the stacks

55
src/bison.s1
View File

@@ -148,10 +148,17 @@ YYLTYPE yylloc; /* location data for the lookahead */
int yynerrs; /* number of parse errors so far */
#endif /* not YYPURE */
#if YYDEBUG != 0
int yydebug; /* nonzero means print parse trace */
/* Since this is uninitialized, it does not stop multiple parsers
from coexisting. */
/* [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 */
@@ -306,10 +313,8 @@ yyparse(YYPARSE_PARAM_ARG)
int yylen;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Starting parse\n");
#endif
fprintf (stderr, "Starting parse\n");
yystate = 0;
yyerrstatus = 0;
@@ -409,19 +414,15 @@ yynewstate:
yylsp = yyls + size - 1;
#endif
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif
fprintf (stderr, "Stack size increased to %d\n", yystacksize);
if (yyssp >= yyss + yystacksize - 1)
YYABORT;
}
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Entering state %d\n", yystate);
#endif
fprintf (stderr, "Entering state %d\n", yystate);
goto yybackup;
yybackup:
@@ -443,10 +444,8 @@ yynewstate:
if (yychar == YYEMPTY)
{
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Reading a token: ");
#endif
fprintf (stderr, "Reading a token: ");
yychar = YYLEX;
}
@@ -457,16 +456,13 @@ yynewstate:
yychar1 = 0;
yychar = YYEOF; /* Don't call YYLEX any more */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Now at end of input.\n");
#endif
fprintf (stderr, "Now at end of input.\n");
}
else
{
yychar1 = YYTRANSLATE(yychar);
#if YYDEBUG != 0
if (yydebug)
{
fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
@@ -477,7 +473,6 @@ yynewstate:
# endif
fprintf (stderr, ")\n");
}
#endif
}
yyn += yychar1;
@@ -508,10 +503,8 @@ yynewstate:
/* Shift the lookahead token. */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
#endif
fprintf (stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
@@ -541,7 +534,9 @@ yyreduce:
if (yylen > 0)
yyval = yyvsp[1-yylen]; /* implement default value of the action */
#if YYDEBUG != 0
#if YYDEBUG
/* We have to keep this `#if YYDEBUG', since we use variables which
are defined only if `YYDEBUG' is set. */
if (yydebug)
{
int i;
@@ -555,7 +550,6 @@ yyreduce:
fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
}
#endif
$ /* the action file gets copied in in place of this dollarsign */
#line 543 "bison.simple"
@@ -565,7 +559,6 @@ $ /* the action file gets copied in in place of this dollarsign */
yylsp -= yylen;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
@@ -574,7 +567,6 @@ $ /* the action file gets copied in in place of this dollarsign */
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
*++yyvsp = yyval;
@@ -672,10 +664,9 @@ yyerrlab1: /* here on error raised explicitly by an action */
if (yychar == YYEOF)
YYABORT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif
fprintf (stderr, "Discarding token %d (%s).\n",
yychar, yytname[yychar1]);
yychar = YYEMPTY;
}
@@ -705,7 +696,6 @@ yyerrpop: /* pop the current state because it cannot handle the error token */
yylsp--;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
@@ -714,7 +704,6 @@ yyerrpop: /* pop the current state because it cannot handle the error token */
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
yyerrhandle:
@@ -740,10 +729,8 @@ yyerrhandle:
if (yyn == YYFINAL)
YYACCEPT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting error token, ");
#endif
fprintf (stderr, "Shifting error token, ");
*++yyvsp = yylval;
#ifdef YYLSP_NEEDED

55
src/bison.simple
View File

@@ -148,10 +148,17 @@ YYLTYPE yylloc; /* location data for the lookahead */
int yynerrs; /* number of parse errors so far */
#endif /* not YYPURE */
#if YYDEBUG != 0
int yydebug; /* nonzero means print parse trace */
/* Since this is uninitialized, it does not stop multiple parsers
from coexisting. */
/* [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 */
@@ -306,10 +313,8 @@ yyparse(YYPARSE_PARAM_ARG)
int yylen;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Starting parse\n");
#endif
fprintf (stderr, "Starting parse\n");
yystate = 0;
yyerrstatus = 0;
@@ -409,19 +414,15 @@ yynewstate:
yylsp = yyls + size - 1;
#endif
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif
fprintf (stderr, "Stack size increased to %d\n", yystacksize);
if (yyssp >= yyss + yystacksize - 1)
YYABORT;
}
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Entering state %d\n", yystate);
#endif
fprintf (stderr, "Entering state %d\n", yystate);
goto yybackup;
yybackup:
@@ -443,10 +444,8 @@ yynewstate:
if (yychar == YYEMPTY)
{
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Reading a token: ");
#endif
fprintf (stderr, "Reading a token: ");
yychar = YYLEX;
}
@@ -457,16 +456,13 @@ yynewstate:
yychar1 = 0;
yychar = YYEOF; /* Don't call YYLEX any more */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Now at end of input.\n");
#endif
fprintf (stderr, "Now at end of input.\n");
}
else
{
yychar1 = YYTRANSLATE(yychar);
#if YYDEBUG != 0
if (yydebug)
{
fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
@@ -477,7 +473,6 @@ yynewstate:
# endif
fprintf (stderr, ")\n");
}
#endif
}
yyn += yychar1;
@@ -508,10 +503,8 @@ yynewstate:
/* Shift the lookahead token. */
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
#endif
fprintf (stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
@@ -541,7 +534,9 @@ yyreduce:
if (yylen > 0)
yyval = yyvsp[1-yylen]; /* implement default value of the action */
#if YYDEBUG != 0
#if YYDEBUG
/* We have to keep this `#if YYDEBUG', since we use variables which
are defined only if `YYDEBUG' is set. */
if (yydebug)
{
int i;
@@ -555,7 +550,6 @@ yyreduce:
fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
}
#endif
$ /* the action file gets copied in in place of this dollarsign */
#line 543 "bison.simple"
@@ -565,7 +559,6 @@ $ /* the action file gets copied in in place of this dollarsign */
yylsp -= yylen;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
@@ -574,7 +567,6 @@ $ /* the action file gets copied in in place of this dollarsign */
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
*++yyvsp = yyval;
@@ -672,10 +664,9 @@ yyerrlab1: /* here on error raised explicitly by an action */
if (yychar == YYEOF)
YYABORT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif
fprintf (stderr, "Discarding token %d (%s).\n",
yychar, yytname[yychar1]);
yychar = YYEMPTY;
}
@@ -705,7 +696,6 @@ yyerrpop: /* pop the current state because it cannot handle the error token */
yylsp--;
#endif
#if YYDEBUG != 0
if (yydebug)
{
short *ssp1 = yyss - 1;
@@ -714,7 +704,6 @@ yyerrpop: /* pop the current state because it cannot handle the error token */
fprintf (stderr, " %d", *++ssp1);
fprintf (stderr, "\n");
}
#endif
yyerrhandle:
@@ -740,10 +729,8 @@ yyerrhandle:
if (yyn == YYFINAL)
YYACCEPT;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Shifting error token, ");
#endif
fprintf (stderr, "Shifting error token, ");
*++yyvsp = yylval;
#ifdef YYLSP_NEEDED