value-tojson-array-circular.js (1110B)
1 // Copyright (C) 2019 Aleksey Shvayka. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-serializejsonarray 5 description: > 6 Circular array value (returned from toJSON method) throws a TypeError. 7 info: | 8 JSON.stringify ( value [ , replacer [ , space ] ] ) 9 10 [...] 11 12. Return ? SerializeJSONProperty(the empty String, wrapper). 12 13 SerializeJSONProperty ( key, holder ) 14 15 [...] 16 2. If Type(value) is Object, then 17 a. Let toJSON be ? Get(value, "toJSON"). 18 b. If IsCallable(toJSON) is true, then 19 i. Set value to ? Call(toJSON, value, « key »). 20 [...] 21 10. If Type(value) is Object and IsCallable(value) is false, then 22 a. Let isArray be ? IsArray(value). 23 b. If isArray is true, return ? SerializeJSONArray(value). 24 25 SerializeJSONArray ( value ) 26 27 1. If stack contains value, throw a TypeError exception because the structure is cyclical. 28 ---*/ 29 30 var arr = []; 31 var circular = [arr]; 32 33 arr.toJSON = function() { 34 return circular; 35 }; 36 37 assert.throws(TypeError, function() { 38 JSON.stringify(circular); 39 }); 40 41 reportCompare(0, 0);