reviver-array-define-prop-err.js (1372B)
1 // Copyright (C) 2016 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-internalizejsonproperty 5 description: Abrupt completion from defining array property while reviving 6 info: | 7 JSON.parse ( text [ , reviver ] ) 8 9 [...] 10 7. If IsCallable(reviver) is true, then 11 [...] 12 e. Return ? InternalizeJSONProperty(root, rootName). 13 14 Runtime Semantics: InternalizeJSONProperty ( holder, name) 15 16 1. Let val be ? Get(holder, name). 17 2. If Type(val) is Object, then 18 a. Let isArray be ? IsArray(val). 19 b. If isArray is true, then 20 i. Set I to 0. 21 ii. Let len be ? ToLength(? Get(val, "length")). 22 iii. Repeat while I < len, 23 1. Let newElement be ? InternalizeJSONProperty(val, ! 24 ToString(I)). 25 2. If newElement is undefined, then 26 [...] 27 3. Else, 28 a. Perform ? CreateDataProperty(val, ! ToString(I), 29 newElement). 30 features: [Proxy] 31 ---*/ 32 33 var badDefine = new Proxy([null], { 34 defineProperty: function(_, name) { 35 throw new Test262Error(); 36 } 37 }); 38 39 assert.throws(Test262Error, function() { 40 JSON.parse('["first", null]', function(_, value) { 41 if (value === 'first') { 42 this[1] = badDefine; 43 } 44 return value; 45 }); 46 }); 47 48 reportCompare(0, 0);