1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 var $JSON = global.JSON;
30 function Revive(holder, name, reviver) {
31 var val = holder[name];
34 var length = val.length;
35 for (var i = 0; i < length; i++) {
36 var newElement = Revive(val, $String(i), reviver);
41 if (%_CallFunction(val, p, ObjectHasOwnProperty)) {
42 var newElement = Revive(val, p, reviver);
43 if (IS_UNDEFINED(newElement)) {
52 return %_CallFunction(holder, name, val, reviver);
55 function JSONParse(text, reviver) {
56 var unfiltered = %ParseJson(TO_STRING_INLINE(text));
57 if (IS_SPEC_FUNCTION(reviver)) {
58 return Revive({'': unfiltered}, '', reviver);
64 function SerializeArray(value, replacer, stack, indent, gap) {
65 if (!%PushIfAbsent(stack, value)) {
66 throw MakeTypeError('circular_structure', $Array());
68 var stepback = indent;
70 var partial = new InternalArray();
71 var len = value.length;
72 for (var i = 0; i < len; i++) {
73 var strP = JSONSerialize($String(i), value, replacer, stack,
75 if (IS_UNDEFINED(strP)) {
82 final = "[" + partial.join(",") + "]";
83 } else if (partial.length > 0) {
84 var separator = ",\n" + indent;
85 final = "[\n" + indent + partial.join(separator) + "\n" +
94 function SerializeObject(value, replacer, stack, indent, gap) {
95 if (!%PushIfAbsent(stack, value)) {
96 throw MakeTypeError('circular_structure', $Array());
98 var stepback = indent;
100 var partial = new InternalArray();
101 if (IS_ARRAY(replacer)) {
102 var length = replacer.length;
103 for (var i = 0; i < length; i++) {
104 if (%_CallFunction(replacer, i, ObjectHasOwnProperty)) {
106 var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
107 if (!IS_UNDEFINED(strP)) {
108 var member = %QuoteJSONString(p) + ":";
109 if (gap != "") member += " ";
111 partial.push(member);
116 for (var p in value) {
117 if (%_CallFunction(value, p, ObjectHasOwnProperty)) {
118 var strP = JSONSerialize(p, value, replacer, stack, indent, gap);
119 if (!IS_UNDEFINED(strP)) {
120 var member = %QuoteJSONString(p) + ":";
121 if (gap != "") member += " ";
123 partial.push(member);
130 final = "{" + partial.join(",") + "}";
131 } else if (partial.length > 0) {
132 var separator = ",\n" + indent;
133 final = "{\n" + indent + partial.join(separator) + "\n" +
142 function JSONSerialize(key, holder, replacer, stack, indent, gap) {
143 var value = holder[key];
144 if (IS_SPEC_OBJECT(value)) {
145 var toJSON = value.toJSON;
146 if (IS_SPEC_FUNCTION(toJSON)) {
147 value = %_CallFunction(value, key, toJSON);
150 if (IS_SPEC_FUNCTION(replacer)) {
151 value = %_CallFunction(holder, key, value, replacer);
153 if (IS_STRING(value)) {
154 return %QuoteJSONString(value);
155 } else if (IS_NUMBER(value)) {
156 return JSON_NUMBER_TO_STRING(value);
157 } else if (IS_BOOLEAN(value)) {
158 return value ? "true" : "false";
159 } else if (IS_NULL(value)) {
161 } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) {
162 // Non-callable object. If it's a primitive wrapper, it must be unwrapped.
163 if (IS_ARRAY(value)) {
164 return SerializeArray(value, replacer, stack, indent, gap);
165 } else if (IS_NUMBER_WRAPPER(value)) {
166 value = ToNumber(value);
167 return JSON_NUMBER_TO_STRING(value);
168 } else if (IS_STRING_WRAPPER(value)) {
169 return %QuoteJSONString(ToString(value));
170 } else if (IS_BOOLEAN_WRAPPER(value)) {
171 return %_ValueOf(value) ? "true" : "false";
173 return SerializeObject(value, replacer, stack, indent, gap);
176 // Undefined or a callable object.
181 function BasicSerializeArray(value, stack, builder) {
182 var len = value.length;
187 if (!%PushIfAbsent(stack, value)) {
188 throw MakeTypeError('circular_structure', $Array());
192 if (IS_STRING(val)) {
193 // First entry is a string. Remaining entries are likely to be strings too.
194 var array_string = %QuoteJSONStringArray(value);
195 if (!IS_UNDEFINED(array_string)) {
196 // array_string also includes bracket characters so we are done.
197 builder[builder.length - 1] = array_string;
201 builder.push(%QuoteJSONString(val));
202 for (var i = 1; i < len; i++) {
204 if (IS_STRING(val)) {
205 builder.push(%QuoteJSONStringComma(val));
208 var before = builder.length;
209 BasicJSONSerialize(i, val, stack, builder);
210 if (before == builder.length) builder[before - 1] = ",null";
214 } else if (IS_NUMBER(val)) {
215 // First entry is a number. Remaining entries are likely to be numbers too.
216 builder.push(JSON_NUMBER_TO_STRING(val));
217 for (var i = 1; i < len; i++) {
220 if (IS_NUMBER(val)) {
221 builder.push(JSON_NUMBER_TO_STRING(val));
223 var before = builder.length;
224 BasicJSONSerialize(i, val, stack, builder);
225 if (before == builder.length) builder[before - 1] = ",null";
229 var before = builder.length;
230 BasicJSONSerialize(0, val, stack, builder);
231 if (before == builder.length) builder.push("null");
232 for (var i = 1; i < len; i++) {
234 before = builder.length;
235 BasicJSONSerialize(i, value[i], stack, builder);
236 if (before == builder.length) builder[before - 1] = ",null";
244 function BasicSerializeObject(value, stack, builder) {
245 if (!%PushIfAbsent(stack, value)) {
246 throw MakeTypeError('circular_structure', $Array());
250 for (var p in value) {
251 if (%HasLocalProperty(value, p)) {
253 builder.push(%QuoteJSONStringComma(p));
255 builder.push(%QuoteJSONString(p));
258 var before = builder.length;
259 BasicJSONSerialize(p, value[p], stack, builder);
260 if (before == builder.length) {
273 function BasicJSONSerialize(key, value, stack, builder) {
274 if (IS_SPEC_OBJECT(value)) {
275 var toJSON = value.toJSON;
276 if (IS_SPEC_FUNCTION(toJSON)) {
277 value = %_CallFunction(value, ToString(key), toJSON);
280 if (IS_STRING(value)) {
281 builder.push(value !== "" ? %QuoteJSONString(value) : '""');
282 } else if (IS_NUMBER(value)) {
283 builder.push(JSON_NUMBER_TO_STRING(value));
284 } else if (IS_BOOLEAN(value)) {
285 builder.push(value ? "true" : "false");
286 } else if (IS_NULL(value)) {
287 builder.push("null");
288 } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) {
289 // Value is a non-callable object.
290 // Unwrap value if necessary
291 if (IS_NUMBER_WRAPPER(value)) {
292 value = ToNumber(value);
293 builder.push(JSON_NUMBER_TO_STRING(value));
294 } else if (IS_STRING_WRAPPER(value)) {
295 builder.push(%QuoteJSONString(ToString(value)));
296 } else if (IS_BOOLEAN_WRAPPER(value)) {
297 builder.push(%_ValueOf(value) ? "true" : "false");
298 } else if (IS_ARRAY(value)) {
299 BasicSerializeArray(value, stack, builder);
301 BasicSerializeObject(value, stack, builder);
307 function JSONStringify(value, replacer, space) {
308 if (%_ArgumentsLength() == 1) {
309 var builder = new InternalArray();
310 BasicJSONSerialize('', value, new InternalArray(), builder);
311 if (builder.length == 0) return;
312 var result = %_FastAsciiArrayJoin(builder, "");
313 if (!IS_UNDEFINED(result)) return result;
314 return %StringBuilderConcat(builder, builder.length, "");
316 if (IS_OBJECT(space)) {
317 // Unwrap 'space' if it is wrapped
318 if (IS_NUMBER_WRAPPER(space)) {
319 space = ToNumber(space);
320 } else if (IS_STRING_WRAPPER(space)) {
321 space = ToString(space);
325 if (IS_NUMBER(space)) {
326 space = MathMax(0, MathMin(ToInteger(space), 10));
327 gap = SubString(" ", 0, space);
328 } else if (IS_STRING(space)) {
329 if (space.length > 10) {
330 gap = SubString(space, 0, 10);
337 return JSONSerialize('', {'': value}, replacer, new InternalArray(), "", gap);
340 function SetUpJSON() {
341 %CheckIsBootstrapping();
342 InstallFunctions($JSON, DONT_ENUM, $Array(
344 "stringify", JSONStringify