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80 lines
1.2 KiB
80 lines
1.2 KiB
/*===
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\u
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1 u
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\u1
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2 u1
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\u12
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3 u12
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\u123
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4 u123
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\u123G
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5 u123G
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\x
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1 x
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\x1
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2 x1
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\x1G
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3 x1G
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===*/
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/* Unterminated hex or unicode escapes should apparently (?) be parsed with
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* the longest match principle at least inside string literals.
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*
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* In other words, if the string ends or the escape is otherwise invalid,
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* the escape characters should be parsed as itself: "\uX" -> "uX".
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*
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* Both V8 and Rhino parse these without a SyntaxError.
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*/
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function testString(x) {
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var t;
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print(x);
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var t = eval('"' + x + '"');
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print(t.length, t);
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}
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function testStrings() {
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var strings = [
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'\\u',
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'\\u1',
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'\\u12',
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'\\u123',
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'\\u123G',
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'\\x',
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'\\x1',
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'\\x1G',
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];
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var i;
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for (i = 0; i < strings.length; i++) {
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try {
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testString(strings[i]);
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} catch (e) {
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print(e);
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}
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}
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}
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try {
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testStrings();
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} catch (e) {
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print(e.name);
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}
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/*===
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SyntaxError
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===*/
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/* However, an unterminated unicode escape outside a string literal
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* won't be parsed by V8 or Rhino if it is broken.
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*/
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try {
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// if "\u" parsed as "u", same as assignemtn: u123 = 1
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print(eval('\\u123 = 1;'));
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} catch (e) {
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print(e.name);
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}
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