qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-22 14:04:48 -07:00
Code Releases Activity

use separate lex buf for better errors:

Browse Source 
package main
func main() { func(){}() + + }

x.go:2: syntax error near _f001

becomes

x.go:2: syntax error near func

R=ken
OCL=27047
CL=27047
This commit is contained in:
Russ Cox 2009-04-02 17:59:09 -07:00
parent 8d8225d529
commit 58f5f4f18d
3 changed files with 14 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/cmd/gc/go.h
View File

@ -533,6 +533,7 @@ EXTERN char* package;
EXTERN Biobuf* bout;
EXTERN int nerrors;
EXTERN char namebuf[NSYMB];
EXTERN char lexbuf[NSYMB];
EXTERN char debug[256];
EXTERN Sym* hash[NHASH];
EXTERN Sym* dclstack;

24
src/cmd/gc/lex.c
View File

@ -370,12 +370,12 @@ l0:
if(c >= Runeself) {
/* all multibyte runes are alpha */
cp = namebuf;
cp = lexbuf;
goto talph;
}
if(isalpha(c)) {
cp = namebuf;
cp = lexbuf;
goto talph;
}
@ -388,13 +388,13 @@ l0:
return -1;
case '_':
cp = namebuf;
cp = lexbuf;
goto talph;
case '.':
c1 = getc();
if(isdigit(c1)) {
cp = namebuf;
cp = lexbuf;
*cp++ = c;
c = c1;
c1 = 0;
@ -413,7 +413,7 @@ l0:
case '"':
/* "..." */
strcpy(namebuf, "\"<string>\"");
strcpy(lexbuf, "\"<string>\"");
cp = mal(sizeof(int32));
clen = sizeof(int32);
@ -437,7 +437,7 @@ l0:
case '`':
/* `...` */
strcpy(namebuf, "`<string>`");
strcpy(lexbuf, "`<string>`");
cp = mal(sizeof(int32));
clen = sizeof(int32);
@ -719,7 +719,7 @@ asop:
talph:
/*
* cp is set to namebuf and some
* cp is set to lexbuf and some
* prefix has been stored
*/
for(;;) {
@ -748,7 +748,7 @@ talph:
*cp = 0;
ungetc(c);
s = lookup(namebuf);
s = lookup(lexbuf);
if(s->lexical == LIGNORE)
goto l0;
@ -768,7 +768,7 @@ talph:
tnum:
c1 = 0;
cp = namebuf;
cp = lexbuf;
if(c != '0') {
for(;;) {
*cp++ = c;
@ -790,7 +790,7 @@ tnum:
continue;
if(c >= 'A' && c <= 'F')
continue;
if(cp == namebuf+2)
if(cp == lexbuf+2)
yyerror("malformed hex constant");
goto ncu;
}
@ -826,7 +826,7 @@ ncu:
ungetc(c);
yylval.val.u.xval = mal(sizeof(*yylval.val.u.xval));
mpatofix(yylval.val.u.xval, namebuf);
mpatofix(yylval.val.u.xval, lexbuf);
if(yylval.val.u.xval->ovf) {
yyerror("overflow in constant");
mpmovecfix(yylval.val.u.xval, 0);
@ -880,7 +880,7 @@ caseout:
ungetc(c);
yylval.val.u.fval = mal(sizeof(*yylval.val.u.fval));
mpatoflt(yylval.val.u.fval, namebuf);
mpatoflt(yylval.val.u.fval, lexbuf);
if(yylval.val.u.fval->val.ovf) {
yyerror("overflow in float constant");
mpmovecflt(yylval.val.u.fval, 0.0);

2
src/cmd/gc/subr.c
View File

@ -23,7 +23,7 @@ yyerror(char *fmt, ...)
vfprint(1, fmt, arg);
va_end(arg);
if(strcmp(fmt, "syntax error") == 0)
print(" near %s", namebuf);
print(" near %s", lexbuf);
print("\n");
if(debug['h'])
*(int*)0 = 0;