| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-json.parse |
| description: Behavior when revived value is a Proxy exotic object |
| info: | |
| [...] |
| 7. If IsCallable(reviver) is true, then |
| a. Let root be ObjectCreate(%ObjectPrototype%). |
| b. Let rootName be the empty String. |
| c. Let status be CreateDataProperty(root, rootName, unfiltered). |
| d. Assert: status is true. |
| e. Return ? InternalizeJSONProperty(root, rootName). |
| |
| 24.3.1.1 Runtime Semantics: InternalizeJSONProperty |
| |
| [...] |
| 2. If Type(val) is Object, then |
| a. Let isArray be ? IsArray(val). |
| b. If isArray is true, then |
| [...] |
| c. Else, |
| [...] |
| |
| 7.2.2 IsArray |
| |
| [...] |
| 3. If argument is a Proxy exotic object, then |
| a. If the value of the [[ProxyHandler]] internal slot of argument is null, |
| throw a TypeError exception. |
| b. Let target be the value of the [[ProxyTarget]] internal slot of |
| argument. |
| c. Return ? IsArray(target). |
| features: [Proxy] |
| ---*/ |
| |
| var objectProxy = new Proxy({ |
| length: 0, |
| other: 0 |
| }, {}); |
| var arrayProxy = new Proxy([], {}); |
| var arrayProxyProxy = new Proxy(arrayProxy, {}); |
| var visitedOther, injectProxy; |
| |
| arrayProxy.other = 0; |
| |
| injectProxy = function(name, val) { |
| if (name === 'other') { |
| visitedOther = true; |
| } |
| this[1] = objectProxy; |
| return val; |
| }; |
| visitedOther = false; |
| |
| JSON.parse('[null, null]', injectProxy); |
| |
| assert.sameValue(visitedOther, true, 'proxy for ordinary object'); |
| |
| injectProxy = function(name, val) { |
| if (name === 'other') { |
| visitedOther = true; |
| } |
| this[1] = arrayProxy; |
| return val; |
| }; |
| visitedOther = false; |
| |
| JSON.parse('[null, null]', injectProxy); |
| |
| assert.sameValue(visitedOther, false, 'proxy for array'); |
| |
| injectProxy = function(name, val) { |
| if (name === 'other') { |
| visitedOther = true; |
| } |
| this[1] = arrayProxyProxy; |
| return val; |
| }; |
| visitedOther = false; |
| |
| JSON.parse('[null, null]', injectProxy); |
| |
| assert.sameValue(visitedOther, false, 'proxy for array proxy'); |