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94 lines
1.6 KiB
94 lines
1.6 KiB
/*
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* Various lexer/parser cases for regexp literals.
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*/
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/*===
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10
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2
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===*/
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var val = 20;
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var foo = 2;
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var g = 5;
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try {
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print(eval("val/2"));
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} catch (e) {
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print(e.name);
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}
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try {
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// parses as (val)/(foo)/(g) = 20/2/5 = 2
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print(eval("val/foo/g"));
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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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ReferenceError
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ReferenceError
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===*/
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/* These parse as RegExp literals and cause an "invalid LHS" ReferenceError. */
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try {
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eval("++/foo/");
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print('never here');
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} catch (e) {
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print(e.name);
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}
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try {
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eval("/foo/++");
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print('never here');
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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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object
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50
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500
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===*/
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/* Specific cases for testing the advance() implementation. */
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function returnObject() {
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return {
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return: 1000
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}
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}
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try {
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/* RegExp allowed after a 'return' statement. */
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print(eval("typeof (function() { return /foo/; })();"));
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} catch (e) {
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print(e.name, e.message);
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}
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try {
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/*
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* Don't allow a RegExp after a 'return' which occurs as a property access name
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* (MemberExpression).
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*
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* This breaks easily if 't' is used to determine whether RegExp can follow:
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* 'return' keyword allows a RegExp to follow, but 'return' as an IdentifierName
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* does not.
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*/
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print(eval("(function() { var foo = { return: 100 }; return foo.return/2; })();"));
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} catch (e) {
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print(e.name);
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}
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try {
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/*
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* Don't allow a RegExp after a 'return' which occurs as a property access name
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* after a function call (CallExpression).
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*/
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print(eval("returnObject().return/2"));
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} catch (e) {
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print(e.name);
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}
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