Add support for computed property names in object literals

test/mjsunit/harmony/object-literal-computed-names.js

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Test computed properties syntax.
+
+// Flags: --harmony-object-literals --harmony-symbols --harmony-strings
+
+function assertObjectEquals(expected, actual) {
+    var expected_props = Object.getOwnPropertyNames(expected);
+    var actual_props = Object.getOwnPropertyNames(actual);
+    expected_props += Object.getOwnPropertySymbols(expected);
+    actual_props += Object.getOwnPropertySymbols(actual);
+
+    assertEquals(expected_props.length, actual_props.length);
+    for (var i = 0; i < expected_props.length; i++) {
+        var prop = expected_props[i];
+        assertEquals(prop, actual_props[i]);
+        assertEquals(expected[prop], actual[prop]);
+    }
+}
+
+function preparse(str, strict) {
+    // Trigger the preparser by fooling it into thinking that the
+    // function is really big.
+    var buffer = '/* ' + ' '.repeat(4096) + '*/';
+    var body = (strict ? '"use strict"; ' : '') + 'return ' + buffer + str;
+    var indirect_eval = eval;
+    var f = 'function preparsed_function() {' + body + '}'
+    indirect_eval(f);
+    return preparsed_function();
+}
+
+function parse(str, strict) {
+    var indirect_eval = eval;
+    var body = (strict ? '"use strict"; ' : '') + '(' + str + ')';
+    return indirect_eval(body);
+}
+
+function test(expected, str) {
+    assertObjectEquals(expected, parse(str, true));
+    assertObjectEquals(expected, parse(str, false));
+    assertObjectEquals(expected, preparse(str, true));
+    assertObjectEquals(expected, preparse(str, false));
+}
+
+var sym = Symbol();
+var expected_with_sym = {};
+expected_with_sym[sym] = 'ohai';
+
+test({foo: 42},          "{['foo']: 42}");
+test({foo: 10},          "{['foo']: 42, foo: 10}");
+test({foo: 42},          "{foo: 10, ['foo']: 42}");
+test({foo: 42, bar: 35}, "{foo: 10, ['foo']: 42, bar: 35}");
+test({foo: 42, bar: 35}, "{foo: 10, bar: 35, ['foo']: 42}");
+test({bar: 35, foo: 42}, "{bar: 35, foo: 10, ['foo']: 42}");
+test({bar: 35, foo: 10}, "{bar: 35, ['foo']: 42, foo: 10}");
+test({bar: 35, foo: 10}, "{['bar']: 35, ['foo']: 42, foo: 10}");
+test({bar: 35, foo: 42}, "{['bar']: 35, foo: 10, ['foo']: 42}");
+test({foo: 42},          "{foo: 10, [1 ? 'foo' : 'bar']: 42}");
+test({foo: 10, bar: 42}, "{foo: 10, [0 ? 'foo' : 'bar']: 42}");
+test(expected_with_sym,  "{[sym]: 'ohai'}");
+test(expected_with_sym,  "{[1 ? sym : 'foo']: 'ohai'}");
+test({foo: 'ohai'},      "{[0 ? sym : 'foo']: 'ohai'}");
+test({foo: 42},          "{['foo']: 10, get foo() { return 42 }}");
+test({foo: 10},          "{get foo() { return 42 }, ['foo']: 10}");
+test({0: 10},            "{0: 42, [0]: 10}");
+test({0: 10},            "{[0]: 42, 0: 10}");
+
+var test_proto = {};
+var test_obj = {['__proto__']: test_proto};
+assertEquals(Object.prototype, Object.getPrototypeOf(test_obj));
+assertTrue(test_obj.hasOwnProperty('__proto__'));
+assertEquals(test_proto, test_obj.__proto__);