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(struct yyGLRStack): yyerror_range now has 3 items,

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not 2, since it's not portable to subtract 1 from the start of an
array.  The new item 0 is never set or used.  All uses changed.

(yyrecoverSyntaxError): Use YYLLOC_DEFAULT instead of assuming
the default definition of YYLLOC_DEFAULT.  Problem reported
by Frank Heckenbach.
This commit is contained in:
Paul Eggert
2004-12-14 18:48:42 +00:00
parent bbd3fa0c61
commit 63d72da75b
1 changed files with 13 additions and 11 deletions
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24
data/glr.c
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@@ -612,8 +612,8 @@ union yyGLRStackItem {
struct yyGLRStack {
int yyerrflag;
int yyerrState;
]b4_location_if([[ /* To compute the location of the error token, */
yyGLRStackItem yyerror_range[2];]])[
]b4_location_if([[ /* To compute the location of the error token. */
yyGLRStackItem yyerror_range[3];]])[
]b4_pure_if(
[
int yyerrcnt;
@@ -1722,7 +1722,7 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
while (yystack->yytops.yystates[0] != NULL)
{
yyGLRState *yys = yystack->yytops.yystates[0];
]b4_location_if([[ yystack->yyerror_range[0].yystate.yyloc = yys->yyloc;]])[
]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
yydestruct ("Error: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
@@ -1737,8 +1737,10 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
/* We throw away the lookahead, but the error range
of the shifted error token must take it into account. */
yyGLRState *yys = yystack->yytops.yystates[0];
yys->yyloc.last_line = yyllocp->last_line;
yys->yyloc.last_column = yyllocp->last_column;]])[
yyGLRStackItem yyerror_range[3];
yyerror_range[1].yystate.yyloc = yys->yyloc;
yyerror_range[2].yystate.yyloc = *yyllocp;
YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[
yydestruct ("Error: discarding",
*yytokenp, yylvalp]b4_location_if([, yyllocp])[);
}
@@ -1784,8 +1786,8 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
{
/* Shift the error token having adjusted its location. */
YYLTYPE yyerrloc;]b4_location_if([[
yystack->yyerror_range[1].yystate.yyloc = *yyllocp;
YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range - 1, 2);]])[
yystack->yyerror_range[2].yystate.yyloc = *yyllocp;
YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range, 2);]])[
YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],
yylvalp, &yyerrloc);
yyglrShift (yystack, 0, yytable[yyj],
@@ -1794,7 +1796,7 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
break;
}
}
]b4_location_if([[ yystack->yyerror_range[0].yystate.yyloc = yys->yyloc;]])[
]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
yydestruct ("Error: popping",
yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
@@ -1893,7 +1895,7 @@ b4_syncline([@oline@], [@ofile@])])dnl
yyrule = yydefaultAction (yystate);
if (yyrule == 0)
{
]b4_location_if([[ yystack.yyerror_range[0].yystate.yyloc = *yyllocp;]])[
]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}
@@ -1924,7 +1926,7 @@ b4_syncline([@oline@], [@ofile@])])dnl
}
else if (yyisErrorAction (yyaction))
{
]b4_location_if([[ yystack.yyerror_range[0].yystate.yyloc = *yyllocp;]])[
]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}
@@ -1950,7 +1952,7 @@ b4_syncline([@oline@], [@ofile@])])dnl
yyFail (&yystack][]b4_lpure_args[, "syntax error");
YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
]b4_location_if([[ yystack.yyerror_range[0].yystate.yyloc = *yyllocp;]])[
]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
goto yyuser_error;
}