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(yydestroyStackItem): New function.

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(yyrecoverSyntaxError, yyreturn): Use it to improve quality of
debugging information.  Problem reported by Joel E. Denny.
This commit is contained in:
Paul Eggert
2005-08-25 17:57:23 +00:00
parent e6efa9dacc
commit a4cf101a98
1 changed files with 22 additions and 8 deletions
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30
data/glr.c
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@@ -886,6 +886,26 @@ yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
]b4_yydestruct_generate([b4_c_ansi_function_def])[
static void
yydestroyStackItem (char const *yymsg, yyGLRState *yys)
{
if (yys->yyresolved)
yydestruct (yymsg, yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
else
{
#if YYDEBUG
if (yydebug)
{
YYFPRINTF (stderr, "%s unresolved ", yymsg);
yysymprint (stderr, yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
YYFPRINTF (stderr, "\n");
}
#endif
}
}
/** Number of symbols composing the right hand side of rule #RULE. */
static inline int
yyrhsLength (yyRuleNum yyrule)
@@ -1981,10 +2001,7 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
}
}
]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
if (yys->yyresolved)
yydestruct ("Error: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
yydestroyStackItem ("Error: popping", yys);
yystack->yytops.yystates[0] = yys->yypred;
yystack->yynextFree -= 1;
yystack->yyspaceLeft += 1;
@@ -2184,10 +2201,7 @@ b4_syncline([@oline@], [@ofile@])])dnl
{
yyGLRState *yys = yystates[0];
]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
)[ if (yys->yyresolved)
yydestruct ("Cleanup: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
)[ yydestroyStackItem ("Cleanup: popping", yys);
yystates[0] = yys->yypred;
yystack.yynextFree -= 1;
yystack.yyspaceLeft += 1;