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better error message for unfinished long strings/comments

This commit is contained in:
Roberto Ierusalimschy 2014-05-11 11:45:43 -03:00
parent ec11d132db
commit 5018104a60
1 changed files with 8 additions and 4 deletions
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12
llex.c
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@ -1,5 +1,5 @@
/* /*
** $Id: llex.c,v 2.75 2014/04/30 16:48:44 roberto Exp roberto $ ** $Id: llex.c,v 2.76 2014/05/01 18:18:06 roberto Exp roberto $
** Lexical Analyzer ** Lexical Analyzer
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -284,15 +284,19 @@ static int skip_sep (LexState *ls) {
static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) { static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
int line = ls->linenumber; /* initial line (for error message) */
save_and_next(ls); /* skip 2nd `[' */ save_and_next(ls); /* skip 2nd `[' */
if (currIsNewline(ls)) /* string starts with a newline? */ if (currIsNewline(ls)) /* string starts with a newline? */
inclinenumber(ls); /* skip it */ inclinenumber(ls); /* skip it */
for (;;) { for (;;) {
switch (ls->current) { switch (ls->current) {
case EOZ: case EOZ: { /* error */
lexerror(ls, (seminfo) ? "unfinished long string" : const char *what = (seminfo ? "string" : "comment");
"unfinished long comment", TK_EOS); const char *msg = luaO_pushfstring(ls->L,
"unfinished long %s (starting at line %d)", what, line);
lexerror(ls, msg, TK_EOS);
break; /* to avoid warnings */ break; /* to avoid warnings */
}
case ']': { case ']': {
if (skip_sep(ls) == sep) { if (skip_sep(ls) == sep) {
save_and_next(ls); /* skip 2nd `]' */ save_and_next(ls); /* skip 2nd `]' */