case 98 : return "\b";
case 118 : return "\u000b"; // \v
case 102 : return "\f";
- case 48 : return "\0";
case 120 : return String.fromCharCode(hex_bytes(2)); // \x
case 117 : return String.fromCharCode(hex_bytes(4)); // \u
case 10 : return ""; // newline
return "";
}
}
+ if (ch >= "0" && ch <= "7")
+ return read_octal_escape_sequence(ch);
return ch;
};
+ function read_octal_escape_sequence(ch) {
+ // Read
+ var p = peek();
+ if (p >= "0" && p <= "7") {
+ ch += next(true);
+ if (ch[0] <= "3" && (p = peek()) >= "0" && p <= "7")
+ ch += next(true);
+ }
+
+ // Parse
+ if (ch === "0") return "\0";
+ if (ch.length > 0 && next_token.has_directive("use strict"))
+ parse_error("SyntaxError: Octal literals are not allowed in strict mode");
+ return String.fromCharCode(parseInt(ch, 8));
+ }
+
function hex_bytes(n) {
var num = 0;
for (; n > 0; --n) {
var quote = next(), ret = "";
for (;;) {
var ch = next(true, true);
- if (ch == "\\") {
- var octal_len = 0, first = null;
- ch = read_while(function(ch){
- if (ch >= "0" && ch <= "7") {
- if (!first) {
- first = ch;
- return ++octal_len;
- }
- else if (first <= "3" && octal_len <= 2) return ++octal_len;
- else if (first >= "4" && octal_len <= 1) return ++octal_len;
- }
- return false;
- });
- if (octal_len > 0) {
- if (ch !== "0" && next_token.has_directive("use strict"))
- parse_error("Octal literals are not allowed in strict mode");
- ch = String.fromCharCode(parseInt(ch, 8));
- } else {
- ch = read_escaped_char(true);
- }
- }
+ if (ch == "\\") ch = read_escaped_char(true);
else if ("\r\n\u2028\u2029".indexOf(ch) >= 0) parse_error("Unterminated string constant");
else if (ch == quote) break;
ret += ch;
--- /dev/null
+octal_escape_sequence: {
+ input: {
+ var boundaries = "\0\7\00\07\70\77\000\077\300\377";
+ var border_check = "\400\700\0000\3000";
+ }
+ expect: {
+ var boundaries = "\x00\x07\x00\x07\x38\x3f\x00\x3f\xc0\xff";
+ var border_check = "\x20\x30\x38\x30\x00\x30\xc0\x30";
+ }
+}