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Change parse-time representation of float literals (which include oversize

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integers) to be strings instead of 'double'.  We convert from string form
to internal representation only after type resolution has determined the
correct type for the constant.  This eliminates loss-of-precision worries
and gets rid of the change in behavior seen at 17 digits with the
previous kluge.
This commit is contained in:
Tom Lane
2000-02-21 18:47:12 +00:00
parent ee97d103cc
commit 393f313227
12 changed files with 186 additions and 186 deletions
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39
src/backend/parser/scan.l
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.64 2000/02/19 04:17:25 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.65 2000/02/21 18:47:02 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -324,7 +324,7 @@ other .
}
{param} {
yylval.ival = atoi((char*)&yytext[1]);
yylval.ival = atol((char*)&yytext[1]);
return PARAM;
}
@@ -332,46 +332,21 @@ other .
char* endptr;
errno = 0;
yylval.ival = strtol((char *)yytext,&endptr,10);
yylval.ival = strtol((char *)yytext, &endptr, 10);
if (*endptr != '\0' || errno == ERANGE)
{
errno = 0;
#if 0
yylval.dval = strtod(((char *)yytext),&endptr);
if (*endptr != '\0' || errno == ERANGE)
elog(ERROR,"Bad integer input '%s'",yytext);
CheckFloat8Val(yylval.dval);
elog(NOTICE,"Integer input '%s' is out of range; promoted to float", yytext);
return FCONST;
#endif
/* integer too large, treat it as a float */
yylval.str = pstrdup((char*)yytext);
return SCONST;
return FCONST;
}
return ICONST;
}
{decimal} {
char* endptr;
if (strlen((char *)yytext) <= 17)
{
errno = 0;
yylval.dval = strtod((char *)yytext,&endptr);
if (*endptr != '\0' || errno == ERANGE)
elog(ERROR,"Bad float input '%s'",yytext);
CheckFloat8Val(yylval.dval);
return FCONST;
}
yylval.str = pstrdup((char*)yytext);
return SCONST;
return FCONST;
}
{real} {
char* endptr;
errno = 0;
yylval.dval = strtod((char *)yytext,&endptr);
if (*endptr != '\0' || errno == ERANGE)
elog(ERROR,"Bad float input '%s'",yytext);
CheckFloat8Val(yylval.dval);
yylval.str = pstrdup((char*)yytext);
return FCONST;
}