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yysyntax_error: improve invocation readability.

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* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
invocation, get rid of the while loop, which is misleading
because there are really at most two iterations.
This commit is contained in:
Joel E. Denny
2010-10-31 18:56:34 -04:00
parent 9d6bc5c402
commit 34db451c37
2 changed files with 35 additions and 22 deletions
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7
ChangeLog
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@@ -1,3 +1,10 @@
2010-10-31 Joel E. Denny <joeldenny@joeldenny.org>
yysyntax_error: improve invocation readability.
* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
invocation, get rid of the while loop, which is misleading
because there are really at most two iterations.
2010-10-31 Joel E. Denny <joeldenny@joeldenny.org>
* ChangeLog: Correct some errors in previous entries.

50
data/yacc.c
View File

@@ -1477,28 +1477,34 @@ yyerrlab:
#if ! YYERROR_VERBOSE
yyerror (]b4_yyerror_args[YY_("syntax error"));
#else
while (1)
{
int yysyntax_error_status =
yysyntax_error (&yymsg_alloc, &yymsg, yystate, yytoken);
if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
{
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
if (yymsg)
continue;
yymsg = yymsgbuf;
yymsg_alloc = sizeof yymsgbuf;
}
if (yysyntax_error_status == 0)
yyerror (]b4_yyerror_args[yymsg);
else
yyerror (]b4_yyerror_args[YY_("syntax error"));
if (yysyntax_error_status == 2)
goto yyexhaustedlab;
break;
}
# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, yystate, \
yytoken)
{
char const *yymsgp = YY_("syntax error");
int yysyntax_error_status = YYSYNTAX_ERROR;
if (yysyntax_error_status == 0)
yymsgp = yymsg;
else if (yysyntax_error_status == 2 && 0 < yymsg_alloc)
{
if (yymsg != yymsgbuf)
YYSTACK_FREE (yymsg);
yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc);
if (!yymsg)
{
yymsg = yymsgbuf;
yymsg_alloc = sizeof yymsgbuf;
}
else
{
yysyntax_error_status = YYSYNTAX_ERROR;
yymsgp = yymsg;
}
}
yyerror (]b4_yyerror_args[yymsgp);
if (yysyntax_error_status == 2)
goto yyexhaustedlab;
}
# undef YYSYNTAX_ERROR
#endif
}