6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-12-25 17:29:50 +00:00
Code Issues Projects Releases Wiki Activity

Some octal character constants were not working.

Browse Source 
The vertical tab '\v' character constant was not accepted.
Added some error recovery in case of illegal character constants.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2425 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-08-29 09:16:05 +00:00
parent 2e1db7ae38
commit e6568c9763
1 changed files with 47 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
src/cc65/scanner.c
View File

@ -243,8 +243,8 @@ static void SetTok (int tok)
static int ParseChar (void)
/* Parse a character. Converts \n into EOL, etc. */
{
int i;
unsigned val;
int I;
unsigned Val;
int C;
/* Check for escape chars */
@ -253,51 +253,71 @@ static int ParseChar (void)
switch (CurC) {
case 'b':
C = '\b';
break;
break;
case 'f':
C = '\f';
break;
C = '\f';
break;
case 'r':
C = '\r';
break;
C = '\r';
break;
case 'n':
C = '\n';
break;
C = '\n';
break;
case 't':
C = '\t';
break;
C = '\t';
break;
case 'v':
C = '\v';
break;
case '\"':
C = '\"';
break;
C = '\"';
break;
case '\'':
C = '\'';
break;
C = '\'';
break;
case '\\':
C = '\\';
break;
C = '\\';
break;
case 'x':
case 'X':
/* Hex character constant */
NextChar ();
val = HexVal (CurC) << 4;
NextChar ();
C = val | HexVal (CurC); /* Do not translate */
break;
/* Hex character constant */
NextChar ();
Val = HexVal (CurC) << 4;
NextChar ();
C = Val | HexVal (CurC); /* Do not translate */
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
/* Octal constant */
i = 0;
C = CurC - '0';
while (NextC >= '0' && NextC <= '7' && i++ < 4) {
I = 0;
Val = CurC - '0';
while (NextC >= '0' && NextC <= '7' && ++I <= 3) {
NextChar ();
C = (C << 3) | (CurC - '0');
Val = (Val << 3) | (CurC - '0');
}
C = (int) Val;
if (Val >= 256) {
Error ("Character constant out of range");
C = ' ';
}
break;
default:
Error ("Illegal character constant");
C = ' ';
/* Try to do error recovery, otherwise the compiler will spit
* out thousands of errors in this place and abort.
*/
if (CurC != '\'' && CurC != '\0') {
while (NextC != '\'' && NextC != '\"' && NextC != '\0') {
NextChar ();
}
}
break;
}
} else {