Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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. |
| 4 | |
| 5 | (function(global, utils) { |
| 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | %CheckIsBootstrapping(); |
| 10 | |
| 11 | // ------------------------------------------------------------------- |
| 12 | // Imports |
| 13 | |
| 14 | var GlobalDate = global.Date; |
| 15 | var GlobalJSON = global.JSON; |
| 16 | var GlobalSet = global.Set; |
| 17 | var InternalArray = utils.InternalArray; |
| 18 | var MakeTypeError; |
| 19 | var MaxSimple; |
| 20 | var MinSimple; |
| 21 | var ObjectHasOwnProperty; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 22 | var Stack; |
| 23 | var StackHas; |
| 24 | var StackPop; |
| 25 | var StackPush; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 26 | var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); |
| 27 | |
| 28 | utils.Import(function(from) { |
| 29 | MakeTypeError = from.MakeTypeError; |
| 30 | MaxSimple = from.MaxSimple; |
| 31 | MinSimple = from.MinSimple; |
| 32 | ObjectHasOwnProperty = from.ObjectHasOwnProperty; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 33 | Stack = from.Stack; |
| 34 | StackHas = from.StackHas; |
| 35 | StackPop = from.StackPop; |
| 36 | StackPush = from.StackPush; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 37 | }); |
| 38 | |
| 39 | // ------------------------------------------------------------------- |
| 40 | |
| 41 | function CreateDataProperty(o, p, v) { |
| 42 | var desc = {value: v, enumerable: true, writable: true, configurable: true}; |
| 43 | return %reflect_define_property(o, p, desc); |
| 44 | } |
| 45 | |
| 46 | |
| 47 | function InternalizeJSONProperty(holder, name, reviver) { |
| 48 | var val = holder[name]; |
| 49 | if (IS_RECEIVER(val)) { |
| 50 | if (%is_arraylike(val)) { |
| 51 | var length = TO_LENGTH(val.length); |
| 52 | for (var i = 0; i < length; i++) { |
| 53 | var newElement = |
| 54 | InternalizeJSONProperty(val, %_NumberToString(i), reviver); |
| 55 | if (IS_UNDEFINED(newElement)) { |
| 56 | %reflect_delete_property(val, i); |
| 57 | } else { |
| 58 | CreateDataProperty(val, i, newElement); |
| 59 | } |
| 60 | } |
| 61 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 62 | var keys = %object_keys(val); |
| 63 | for (var i = 0; i < keys.length; i++) { |
| 64 | var p = keys[i]; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 65 | var newElement = InternalizeJSONProperty(val, p, reviver); |
| 66 | if (IS_UNDEFINED(newElement)) { |
| 67 | %reflect_delete_property(val, p); |
| 68 | } else { |
| 69 | CreateDataProperty(val, p, newElement); |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | return %_Call(reviver, holder, name, val); |
| 75 | } |
| 76 | |
| 77 | |
| 78 | function JSONParse(text, reviver) { |
| 79 | var unfiltered = %ParseJson(text); |
| 80 | if (IS_CALLABLE(reviver)) { |
| 81 | return InternalizeJSONProperty({'': unfiltered}, '', reviver); |
| 82 | } else { |
| 83 | return unfiltered; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | |
| 88 | function SerializeArray(value, replacer, stack, indent, gap) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 89 | if (StackHas(stack, value)) throw MakeTypeError(kCircularStructure); |
| 90 | StackPush(stack, value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 91 | var stepback = indent; |
| 92 | indent += gap; |
| 93 | var partial = new InternalArray(); |
| 94 | var len = TO_LENGTH(value.length); |
| 95 | for (var i = 0; i < len; i++) { |
| 96 | var strP = JSONSerialize(%_NumberToString(i), value, replacer, stack, |
| 97 | indent, gap); |
| 98 | if (IS_UNDEFINED(strP)) { |
| 99 | strP = "null"; |
| 100 | } |
| 101 | partial.push(strP); |
| 102 | } |
| 103 | var final; |
| 104 | if (gap == "") { |
| 105 | final = "[" + partial.join(",") + "]"; |
| 106 | } else if (partial.length > 0) { |
| 107 | var separator = ",\n" + indent; |
| 108 | final = "[\n" + indent + partial.join(separator) + "\n" + |
| 109 | stepback + "]"; |
| 110 | } else { |
| 111 | final = "[]"; |
| 112 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 113 | StackPop(stack); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 114 | return final; |
| 115 | } |
| 116 | |
| 117 | |
| 118 | function SerializeObject(value, replacer, stack, indent, gap) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 119 | if (StackHas(stack, value)) throw MakeTypeError(kCircularStructure); |
| 120 | StackPush(stack, value); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 121 | var stepback = indent; |
| 122 | indent += gap; |
| 123 | var partial = new InternalArray(); |
| 124 | if (IS_ARRAY(replacer)) { |
| 125 | var length = replacer.length; |
| 126 | for (var i = 0; i < length; i++) { |
| 127 | var p = replacer[i]; |
| 128 | var strP = JSONSerialize(p, value, replacer, stack, indent, gap); |
| 129 | if (!IS_UNDEFINED(strP)) { |
| 130 | var member = %QuoteJSONString(p) + ":"; |
| 131 | if (gap != "") member += " "; |
| 132 | member += strP; |
| 133 | partial.push(member); |
| 134 | } |
| 135 | } |
| 136 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 137 | var keys = %object_keys(value); |
| 138 | for (var i = 0; i < keys.length; i++) { |
| 139 | var p = keys[i]; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 140 | var strP = JSONSerialize(p, value, replacer, stack, indent, gap); |
| 141 | if (!IS_UNDEFINED(strP)) { |
| 142 | var member = %QuoteJSONString(p) + ":"; |
| 143 | if (gap != "") member += " "; |
| 144 | member += strP; |
| 145 | partial.push(member); |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | var final; |
| 150 | if (gap == "") { |
| 151 | final = "{" + partial.join(",") + "}"; |
| 152 | } else if (partial.length > 0) { |
| 153 | var separator = ",\n" + indent; |
| 154 | final = "{\n" + indent + partial.join(separator) + "\n" + |
| 155 | stepback + "}"; |
| 156 | } else { |
| 157 | final = "{}"; |
| 158 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 159 | StackPop(stack); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 160 | return final; |
| 161 | } |
| 162 | |
| 163 | |
| 164 | function JSONSerialize(key, holder, replacer, stack, indent, gap) { |
| 165 | var value = holder[key]; |
| 166 | if (IS_RECEIVER(value)) { |
| 167 | var toJSON = value.toJSON; |
| 168 | if (IS_CALLABLE(toJSON)) { |
| 169 | value = %_Call(toJSON, value, key); |
| 170 | } |
| 171 | } |
| 172 | if (IS_CALLABLE(replacer)) { |
| 173 | value = %_Call(replacer, holder, key, value); |
| 174 | } |
| 175 | if (IS_STRING(value)) { |
| 176 | return %QuoteJSONString(value); |
| 177 | } else if (IS_NUMBER(value)) { |
| 178 | return JSON_NUMBER_TO_STRING(value); |
| 179 | } else if (IS_BOOLEAN(value)) { |
| 180 | return value ? "true" : "false"; |
| 181 | } else if (IS_NULL(value)) { |
| 182 | return "null"; |
| 183 | } else if (IS_RECEIVER(value) && !IS_CALLABLE(value)) { |
| 184 | // Non-callable object. If it's a primitive wrapper, it must be unwrapped. |
| 185 | if (%is_arraylike(value)) { |
| 186 | return SerializeArray(value, replacer, stack, indent, gap); |
| 187 | } else if (IS_NUMBER_WRAPPER(value)) { |
| 188 | value = TO_NUMBER(value); |
| 189 | return JSON_NUMBER_TO_STRING(value); |
| 190 | } else if (IS_STRING_WRAPPER(value)) { |
| 191 | return %QuoteJSONString(TO_STRING(value)); |
| 192 | } else if (IS_BOOLEAN_WRAPPER(value)) { |
| 193 | return %_ValueOf(value) ? "true" : "false"; |
| 194 | } else { |
| 195 | return SerializeObject(value, replacer, stack, indent, gap); |
| 196 | } |
| 197 | } |
| 198 | // Undefined or a callable object. |
| 199 | return UNDEFINED; |
| 200 | } |
| 201 | |
| 202 | |
| 203 | function JSONStringify(value, replacer, space) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 204 | if (arguments.length === 1 && !IS_PROXY(value)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 205 | return %BasicJSONStringify(value); |
| 206 | } |
| 207 | if (!IS_CALLABLE(replacer) && %is_arraylike(replacer)) { |
| 208 | var property_list = new InternalArray(); |
| 209 | var seen_properties = new GlobalSet(); |
| 210 | var length = TO_LENGTH(replacer.length); |
| 211 | for (var i = 0; i < length; i++) { |
| 212 | var v = replacer[i]; |
| 213 | var item; |
| 214 | if (IS_STRING(v)) { |
| 215 | item = v; |
| 216 | } else if (IS_NUMBER(v)) { |
| 217 | item = %_NumberToString(v); |
| 218 | } else if (IS_STRING_WRAPPER(v) || IS_NUMBER_WRAPPER(v)) { |
| 219 | item = TO_STRING(v); |
| 220 | } else { |
| 221 | continue; |
| 222 | } |
| 223 | if (!seen_properties.has(item)) { |
| 224 | property_list.push(item); |
| 225 | seen_properties.add(item); |
| 226 | } |
| 227 | } |
| 228 | replacer = property_list; |
| 229 | } |
| 230 | if (IS_OBJECT(space)) { |
| 231 | // Unwrap 'space' if it is wrapped |
| 232 | if (IS_NUMBER_WRAPPER(space)) { |
| 233 | space = TO_NUMBER(space); |
| 234 | } else if (IS_STRING_WRAPPER(space)) { |
| 235 | space = TO_STRING(space); |
| 236 | } |
| 237 | } |
| 238 | var gap; |
| 239 | if (IS_NUMBER(space)) { |
| 240 | space = MaxSimple(0, MinSimple(TO_INTEGER(space), 10)); |
| 241 | gap = %_SubString(" ", 0, space); |
| 242 | } else if (IS_STRING(space)) { |
| 243 | if (space.length > 10) { |
| 244 | gap = %_SubString(space, 0, 10); |
| 245 | } else { |
| 246 | gap = space; |
| 247 | } |
| 248 | } else { |
| 249 | gap = ""; |
| 250 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 251 | if (!IS_CALLABLE(replacer) && !property_list && !gap && !IS_PROXY(value)) { |
| 252 | return %BasicJSONStringify(value); |
| 253 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 254 | return JSONSerialize('', {'': value}, replacer, new Stack(), "", gap); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | // ------------------------------------------------------------------- |
| 258 | |
| 259 | %AddNamedProperty(GlobalJSON, toStringTagSymbol, "JSON", READ_ONLY | DONT_ENUM); |
| 260 | |
| 261 | // Set up non-enumerable properties of the JSON object. |
| 262 | utils.InstallFunctions(GlobalJSON, DONT_ENUM, [ |
| 263 | "parse", JSONParse, |
| 264 | "stringify", JSONStringify |
| 265 | ]); |
| 266 | |
| 267 | // ------------------------------------------------------------------- |
| 268 | // Date.toJSON |
| 269 | |
| 270 | // 20.3.4.37 Date.prototype.toJSON ( key ) |
| 271 | function DateToJSON(key) { |
| 272 | var o = TO_OBJECT(this); |
| 273 | var tv = TO_PRIMITIVE_NUMBER(o); |
| 274 | if (IS_NUMBER(tv) && !NUMBER_IS_FINITE(tv)) { |
| 275 | return null; |
| 276 | } |
| 277 | return o.toISOString(); |
| 278 | } |
| 279 | |
| 280 | // Set up non-enumerable functions of the Date prototype object. |
| 281 | utils.InstallFunctions(GlobalDate.prototype, DONT_ENUM, [ |
| 282 | "toJSON", DateToJSON |
| 283 | ]); |
| 284 | |
| 285 | // ------------------------------------------------------------------- |
| 286 | // JSON Builtins |
| 287 | |
| 288 | function JsonSerializeAdapter(key, object) { |
| 289 | var holder = {}; |
| 290 | holder[key] = object; |
| 291 | // No need to pass the actual holder since there is no replacer function. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 292 | return JSONSerialize(key, holder, UNDEFINED, new Stack(), "", ""); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | %InstallToContext(["json_serialize_adapter", JsonSerializeAdapter]); |
| 296 | |
| 297 | }) |