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* src/bison.s1 (yyparse): Reorganize the definitions of the stacks

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and related variables so that the similarities are highlighted.
This commit is contained in:
Akim Demaille
2000-03-16 16:00:07 +00:00
parent b07b484a41
commit bb10be5408
3 changed files with 59 additions and 36 deletions
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5
ChangeLog
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@@ -1,3 +1,8 @@
2000-03-16 Akim Demaille <akim@epita.fr>
* src/bison.s1 (yyparse): Reorganize the definitions of the stacks
and related variables so that the similarities are highlighted.
2000-03-16 Akim Demaille <akim@epita.fr>
* src/bison.s1: Properly indent CPP directives.

45
src/bison.s1
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@@ -251,29 +251,37 @@ yyparse(YYPARSE_PARAM_ARG)
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
/* Lookahead token as an internal (translated) token number. */
int yychar1 = 0;
/* Three stacks and their tools:
`yyss': related to states,
`yysv': related to semantic values,
`yyls': related to locations.
Refer to the stacks thru separate pointers, to allow yyoverflow
to reallocate them elsewhere. */
/* The state stack. */
short yyssa[YYINITDEPTH];
short *yyss = yyssa;
register short *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
/* Refer to the stacks thru separate pointers. */
short *yyss = yyssa;
/* To allow yyoverflow to reallocate them elsewhere. */
YYSTYPE *yyvs = yyvsa;
register YYSTYPE *yyvsp;
#ifdef YYLSP_NEEDED
/* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
#endif
#ifdef YYLSP_NEEDED
# define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
#else
# define YYPOPSTACK (yyvsp--, yyssp--)
@@ -291,9 +299,10 @@ yyparse(YYPARSE_PARAM_ARG)
# endif
#endif
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
/* The variable used to return semantic values from the action
routines. */
YYSTYPE yyval;
int yylen;
@@ -344,16 +353,16 @@ yynewstate:
# ifdef YYLSP_NEEDED
/* This used to be a conditional around just the two extra args,
but that might be undefined if yyoverflow is a macro. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
yyoverflow ("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
# else
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
yyoverflow ("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
# endif
yyss = yyss1; yyvs = yyvs1;

45
src/bison.simple
View File

@@ -251,29 +251,37 @@ yyparse(YYPARSE_PARAM_ARG)
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
/* Lookahead token as an internal (translated) token number. */
int yychar1 = 0;
/* Three stacks and their tools:
`yyss': related to states,
`yysv': related to semantic values,
`yyls': related to locations.
Refer to the stacks thru separate pointers, to allow yyoverflow
to reallocate them elsewhere. */
/* The state stack. */
short yyssa[YYINITDEPTH];
short *yyss = yyssa;
register short *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
/* Refer to the stacks thru separate pointers. */
short *yyss = yyssa;
/* To allow yyoverflow to reallocate them elsewhere. */
YYSTYPE *yyvs = yyvsa;
register YYSTYPE *yyvsp;
#ifdef YYLSP_NEEDED
/* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
#endif
#ifdef YYLSP_NEEDED
# define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
#else
# define YYPOPSTACK (yyvsp--, yyssp--)
@@ -291,9 +299,10 @@ yyparse(YYPARSE_PARAM_ARG)
# endif
#endif
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
/* The variable used to return semantic values from the action
routines. */
YYSTYPE yyval;
int yylen;
@@ -344,16 +353,16 @@ yynewstate:
# ifdef YYLSP_NEEDED
/* This used to be a conditional around just the two extra args,
but that might be undefined if yyoverflow is a macro. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
yyoverflow ("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
# else
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
yyoverflow ("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
# endif
yyss = yyss1; yyvs = yyvs1;