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Merge pull request #829 from inexorabletash/string-escapes

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ca65: Add string_escapes feature. Resolves #535
This commit is contained in:
Oliver Schmidt
2019-01-20 21:58:06 +01:00
committed by GitHub
parent 9a83284b7b c8bf652982
commit cd72f816d3
6 changed files with 60 additions and 1 deletions
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37
src/ca65/scanner.c
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@@ -794,6 +794,43 @@ static void ReadStringConst (int StringTerm)
break;
}
if (C == '\\' && StringEscapes) {
NextChar ();
switch (C) {
case EOF:
Error ("Unterminated escape sequence in string constant");
break;
case '\\':
case '\'':
case '"':
break;
case 't':
C = '\x09';
break;
case 'r':
C = '\x0D';
break;
case 'n':
C = '\x0A';
break;
case 'x':
NextChar ();
if (IsXDigit (C)) {
char high_nibble = DigitVal (C) << 4;
NextChar ();
if (IsXDigit (C)) {
C = high_nibble | DigitVal (C);
break;
}
}
/* otherwise, fall through */
default:
Error ("Unsupported escape sequence in string constant");
break;
}
}
/* Append the char to the string */
SB_AppendChar (&CurTok.SVal, C);