1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
7 // This file relies on the fact that the following declarations have been made
9 // var $Array = global.Array;
10 // var $String = global.String;
12 var $JSON = global.JSON;
14 // -------------------------------------------------------------------
16 function Revive(holder, name, reviver) {
17 var val = holder[name];
20 var length = val.length;
21 for (var i = 0; i < length; i++) {
22 var newElement = Revive(val, $String(i), reviver);
27 if (%_CallFunction(val, p, ObjectHasOwnProperty)) {
28 var newElement = Revive(val, p, reviver);
29 if (IS_UNDEFINED(newElement)) {
38 return %_CallFunction(holder, name, val, reviver);
41 function JSONParse(text, reviver) {
42 var unfiltered = %ParseJson(TO_STRING_INLINE(text));
43 if (IS_SPEC_FUNCTION(reviver)) {
44 return Revive({'': unfiltered}, '', reviver);
50 function SerializeArray(value, replacer, stack, indent, gap) {
51 if (!%PushIfAbsent(stack, value)) {
52 throw MakeTypeError('circular_structure', $Array());
54 var stepback = indent;
56 var partial = new InternalArray();
57 var len = value.length;
58 for (var i = 0; i < len; i++) {
59 var strP = JSONSerialize($String(i), value, replacer, stack,
61 if (IS_UNDEFINED(strP)) {
68 final = "[" + partial.join(",") + "]";
69 } else if (partial.length > 0) {
70 var separator = ",\n" + indent;
71 final = "[\n" + indent + partial.join(separator) + "\n" +
80 function SerializeObject(value, replacer, stack, indent, gap) {
81 if (!%PushIfAbsent(stack, value)) {
82 throw MakeTypeError('circular_structure', $Array());
84 var stepback = indent;
86 var partial = new InternalArray();
87 if (IS_ARRAY(replacer)) {
88 var length = replacer.length;
89 for (var i = 0; i < length; i++) {
90 if (%_CallFunction(replacer, i, ObjectHasOwnProperty)) {
92 var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
93 if (!IS_UNDEFINED(strP)) {
94 var member = %QuoteJSONString(p) + ":";
95 if (gap != "") member += " ";
102 for (var p in value) {
103 if (%_CallFunction(value, p, ObjectHasOwnProperty)) {
104 var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
105 if (!IS_UNDEFINED(strP)) {
106 var member = %QuoteJSONString(p) + ":";
107 if (gap != "") member += " ";
109 partial.push(member);
116 final = "{" + partial.join(",") + "}";
117 } else if (partial.length > 0) {
118 var separator = ",\n" + indent;
119 final = "{\n" + indent + partial.join(separator) + "\n" +
128 function JSONSerialize(key, holder, replacer, stack, indent, gap) {
129 var value = holder[key];
130 if (IS_SPEC_OBJECT(value)) {
131 var toJSON = value.toJSON;
132 if (IS_SPEC_FUNCTION(toJSON)) {
133 value = %_CallFunction(value, key, toJSON);
136 if (IS_SPEC_FUNCTION(replacer)) {
137 value = %_CallFunction(holder, key, value, replacer);
139 if (IS_STRING(value)) {
140 return %QuoteJSONString(value);
141 } else if (IS_NUMBER(value)) {
142 return JSON_NUMBER_TO_STRING(value);
143 } else if (IS_BOOLEAN(value)) {
144 return value ? "true" : "false";
145 } else if (IS_NULL(value)) {
147 } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) {
148 // Non-callable object. If it's a primitive wrapper, it must be unwrapped.
149 if (IS_ARRAY(value)) {
150 return SerializeArray(value, replacer, stack, indent, gap);
151 } else if (IS_NUMBER_WRAPPER(value)) {
152 value = ToNumber(value);
153 return JSON_NUMBER_TO_STRING(value);
154 } else if (IS_STRING_WRAPPER(value)) {
155 return %QuoteJSONString(ToString(value));
156 } else if (IS_BOOLEAN_WRAPPER(value)) {
157 return %_ValueOf(value) ? "true" : "false";
159 return SerializeObject(value, replacer, stack, indent, gap);
162 // Undefined or a callable object.
167 function JSONStringify(value, replacer, space) {
168 if (%_ArgumentsLength() == 1) {
169 return %BasicJSONStringify(value);
171 if (IS_OBJECT(space)) {
172 // Unwrap 'space' if it is wrapped
173 if (IS_NUMBER_WRAPPER(space)) {
174 space = ToNumber(space);
175 } else if (IS_STRING_WRAPPER(space)) {
176 space = ToString(space);
180 if (IS_NUMBER(space)) {
181 space = MathMax(0, MathMin(ToInteger(space), 10));
182 gap = %_SubString(" ", 0, space);
183 } else if (IS_STRING(space)) {
184 if (space.length > 10) {
185 gap = %_SubString(space, 0, 10);
192 if (IS_ARRAY(replacer)) {
193 // Deduplicate replacer array items.
194 var property_list = new InternalArray();
195 var seen_properties = { __proto__: null };
196 var seen_sentinel = {};
197 var length = replacer.length;
198 for (var i = 0; i < length; i++) {
199 var item = replacer[i];
200 if (IS_STRING_WRAPPER(item)) {
201 item = ToString(item);
203 if (IS_NUMBER_WRAPPER(item)) item = ToNumber(item);
204 if (IS_NUMBER(item)) item = %_NumberToString(item);
206 if (IS_STRING(item) && seen_properties[item] != seen_sentinel) {
207 property_list.push(item);
208 // We cannot use true here because __proto__ needs to be an object.
209 seen_properties[item] = seen_sentinel;
212 replacer = property_list;
214 return JSONSerialize('', {'': value}, replacer, new InternalArray(), "", gap);
218 // -------------------------------------------------------------------
220 function SetUpJSON() {
221 %CheckIsBootstrapping();
223 %AddNamedProperty($JSON, symbolToStringTag, "JSON", READ_ONLY | DONT_ENUM);
225 // Set up non-enumerable properties of the JSON object.
226 InstallFunctions($JSON, DONT_ENUM, $Array(
228 "stringify", JSONStringify
235 // -------------------------------------------------------------------
238 function JSONSerializeAdapter(key, object) {
240 holder[key] = object;
241 // No need to pass the actual holder since there is no replacer function.
242 return JSONSerialize(key, holder, UNDEFINED, new InternalArray(), "", "");