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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This file relies on the fact that the following declarations have been made | 5 // This file relies on the fact that the following declarations have been made |
6 // in runtime.js: | 6 // in runtime.js: |
7 // var $Object = global.Object; | 7 // var $Object = global.Object; |
8 // var $Boolean = global.Boolean; | 8 // var $Boolean = global.Boolean; |
9 // var $Number = global.Number; | 9 // var $Number = global.Number; |
10 // var $Function = global.Function; | 10 // var $Function = global.Function; |
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231 | 231 |
232 | 232 |
233 // ECMA-262 - 15.2.4.4 | 233 // ECMA-262 - 15.2.4.4 |
234 function ObjectValueOf() { | 234 function ObjectValueOf() { |
235 return ToObject(this); | 235 return ToObject(this); |
236 } | 236 } |
237 | 237 |
238 | 238 |
239 // ECMA-262 - 15.2.4.5 | 239 // ECMA-262 - 15.2.4.5 |
240 function ObjectHasOwnProperty(V) { | 240 function ObjectHasOwnProperty(V) { |
241 if (%IsJSProxy(this)) { | 241 if (%_IsJSProxy(this)) { |
242 // TODO(rossberg): adjust once there is a story for symbols vs proxies. | 242 // TODO(rossberg): adjust once there is a story for symbols vs proxies. |
243 if (IS_SYMBOL(V)) return false; | 243 if (IS_SYMBOL(V)) return false; |
244 | 244 |
245 var handler = %GetHandler(this); | 245 var handler = %GetHandler(this); |
246 return CallTrap1(handler, "hasOwn", DerivedHasOwnTrap, ToName(V)); | 246 return CallTrap1(handler, "hasOwn", DerivedHasOwnTrap, ToName(V)); |
247 } | 247 } |
248 return %HasOwnProperty(TO_OBJECT_INLINE(this), ToName(V)); | 248 return %HasOwnProperty(TO_OBJECT_INLINE(this), ToName(V)); |
249 } | 249 } |
250 | 250 |
251 | 251 |
252 // ECMA-262 - 15.2.4.6 | 252 // ECMA-262 - 15.2.4.6 |
253 function ObjectIsPrototypeOf(V) { | 253 function ObjectIsPrototypeOf(V) { |
254 CHECK_OBJECT_COERCIBLE(this, "Object.prototype.isPrototypeOf"); | 254 CHECK_OBJECT_COERCIBLE(this, "Object.prototype.isPrototypeOf"); |
255 if (!IS_SPEC_OBJECT(V)) return false; | 255 if (!IS_SPEC_OBJECT(V)) return false; |
256 return %IsInPrototypeChain(this, V); | 256 return %IsInPrototypeChain(this, V); |
257 } | 257 } |
258 | 258 |
259 | 259 |
260 // ECMA-262 - 15.2.4.6 | 260 // ECMA-262 - 15.2.4.6 |
261 function ObjectPropertyIsEnumerable(V) { | 261 function ObjectPropertyIsEnumerable(V) { |
262 var P = ToName(V); | 262 var P = ToName(V); |
263 if (%IsJSProxy(this)) { | 263 if (%_IsJSProxy(this)) { |
264 // TODO(rossberg): adjust once there is a story for symbols vs proxies. | 264 // TODO(rossberg): adjust once there is a story for symbols vs proxies. |
265 if (IS_SYMBOL(V)) return false; | 265 if (IS_SYMBOL(V)) return false; |
266 | 266 |
267 var desc = GetOwnPropertyJS(this, P); | 267 var desc = GetOwnPropertyJS(this, P); |
268 return IS_UNDEFINED(desc) ? false : desc.isEnumerable(); | 268 return IS_UNDEFINED(desc) ? false : desc.isEnumerable(); |
269 } | 269 } |
270 return %IsPropertyEnumerable(ToObject(this), P); | 270 return %IsPropertyEnumerable(ToObject(this), P); |
271 } | 271 } |
272 | 272 |
273 | 273 |
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319 var receiver = this; | 319 var receiver = this; |
320 if (receiver == null && !IS_UNDETECTABLE(receiver)) { | 320 if (receiver == null && !IS_UNDETECTABLE(receiver)) { |
321 receiver = %GlobalProxy(global); | 321 receiver = %GlobalProxy(global); |
322 } | 322 } |
323 return %LookupAccessor(ToObject(receiver), ToName(name), SETTER); | 323 return %LookupAccessor(ToObject(receiver), ToName(name), SETTER); |
324 } | 324 } |
325 | 325 |
326 | 326 |
327 function ObjectKeys(obj) { | 327 function ObjectKeys(obj) { |
328 obj = ToObject(obj); | 328 obj = ToObject(obj); |
329 if (%IsJSProxy(obj)) { | 329 if (%_IsJSProxy(obj)) { |
330 var handler = %GetHandler(obj); | 330 var handler = %GetHandler(obj); |
331 var names = CallTrap0(handler, "keys", DerivedKeysTrap); | 331 var names = CallTrap0(handler, "keys", DerivedKeysTrap); |
332 return ToNameArray(names, "keys", false); | 332 return ToNameArray(names, "keys", false); |
333 } | 333 } |
334 return %OwnKeys(obj); | 334 return %OwnKeys(obj); |
335 } | 335 } |
336 | 336 |
337 | 337 |
338 // ES5 8.10.1. | 338 // ES5 8.10.1. |
339 function IsAccessorDescriptor(desc) { | 339 function IsAccessorDescriptor(desc) { |
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616 | 616 |
617 | 617 |
618 function CallTrap2(handler, name, defaultTrap, x, y) { | 618 function CallTrap2(handler, name, defaultTrap, x, y) { |
619 return %_CallFunction(handler, x, y, GetTrap(handler, name, defaultTrap)); | 619 return %_CallFunction(handler, x, y, GetTrap(handler, name, defaultTrap)); |
620 } | 620 } |
621 | 621 |
622 | 622 |
623 // ES5 section 8.12.1. | 623 // ES5 section 8.12.1. |
624 function GetOwnPropertyJS(obj, v) { | 624 function GetOwnPropertyJS(obj, v) { |
625 var p = ToName(v); | 625 var p = ToName(v); |
626 if (%IsJSProxy(obj)) { | 626 if (%_IsJSProxy(obj)) { |
627 // TODO(rossberg): adjust once there is a story for symbols vs proxies. | 627 // TODO(rossberg): adjust once there is a story for symbols vs proxies. |
628 if (IS_SYMBOL(v)) return UNDEFINED; | 628 if (IS_SYMBOL(v)) return UNDEFINED; |
629 | 629 |
630 var handler = %GetHandler(obj); | 630 var handler = %GetHandler(obj); |
631 var descriptor = CallTrap1( | 631 var descriptor = CallTrap1( |
632 handler, "getOwnPropertyDescriptor", UNDEFINED, p); | 632 handler, "getOwnPropertyDescriptor", UNDEFINED, p); |
633 if (IS_UNDEFINED(descriptor)) return descriptor; | 633 if (IS_UNDEFINED(descriptor)) return descriptor; |
634 var desc = ToCompletePropertyDescriptor(descriptor); | 634 var desc = ToCompletePropertyDescriptor(descriptor); |
635 if (!desc.isConfigurable()) { | 635 if (!desc.isConfigurable()) { |
636 throw MakeTypeError("proxy_prop_not_configurable", | 636 throw MakeTypeError("proxy_prop_not_configurable", |
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956 } | 956 } |
957 } | 957 } |
958 | 958 |
959 // Step 5 - Fallback to default implementation. | 959 // Step 5 - Fallback to default implementation. |
960 return DefineObjectProperty(obj, p, desc, should_throw); | 960 return DefineObjectProperty(obj, p, desc, should_throw); |
961 } | 961 } |
962 | 962 |
963 | 963 |
964 // ES5 section 8.12.9, ES5 section 15.4.5.1 and Harmony proxies. | 964 // ES5 section 8.12.9, ES5 section 15.4.5.1 and Harmony proxies. |
965 function DefineOwnProperty(obj, p, desc, should_throw) { | 965 function DefineOwnProperty(obj, p, desc, should_throw) { |
966 if (%IsJSProxy(obj)) { | 966 if (%_IsJSProxy(obj)) { |
967 // TODO(rossberg): adjust once there is a story for symbols vs proxies. | 967 // TODO(rossberg): adjust once there is a story for symbols vs proxies. |
968 if (IS_SYMBOL(p)) return false; | 968 if (IS_SYMBOL(p)) return false; |
969 | 969 |
970 var attributes = FromGenericPropertyDescriptor(desc); | 970 var attributes = FromGenericPropertyDescriptor(desc); |
971 return DefineProxyProperty(obj, p, attributes, should_throw); | 971 return DefineProxyProperty(obj, p, attributes, should_throw); |
972 } else if (IS_ARRAY(obj)) { | 972 } else if (IS_ARRAY(obj)) { |
973 return DefineArrayProperty(obj, p, desc, should_throw); | 973 return DefineArrayProperty(obj, p, desc, should_throw); |
974 } else { | 974 } else { |
975 return DefineObjectProperty(obj, p, desc, should_throw); | 975 return DefineObjectProperty(obj, p, desc, should_throw); |
976 } | 976 } |
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1104 return propertyNames; | 1104 return propertyNames; |
1105 } | 1105 } |
1106 | 1106 |
1107 | 1107 |
1108 // ES5 section 15.2.3.4. | 1108 // ES5 section 15.2.3.4. |
1109 function ObjectGetOwnPropertyNames(obj) { | 1109 function ObjectGetOwnPropertyNames(obj) { |
1110 if (!IS_SPEC_OBJECT(obj)) { | 1110 if (!IS_SPEC_OBJECT(obj)) { |
1111 throw MakeTypeError("called_on_non_object", ["Object.getOwnPropertyNames"]); | 1111 throw MakeTypeError("called_on_non_object", ["Object.getOwnPropertyNames"]); |
1112 } | 1112 } |
1113 // Special handling for proxies. | 1113 // Special handling for proxies. |
1114 if (%IsJSProxy(obj)) { | 1114 if (%_IsJSProxy(obj)) { |
1115 var handler = %GetHandler(obj); | 1115 var handler = %GetHandler(obj); |
1116 var names = CallTrap0(handler, "getOwnPropertyNames", UNDEFINED); | 1116 var names = CallTrap0(handler, "getOwnPropertyNames", UNDEFINED); |
1117 return ToNameArray(names, "getOwnPropertyNames", false); | 1117 return ToNameArray(names, "getOwnPropertyNames", false); |
1118 } | 1118 } |
1119 | 1119 |
1120 return ObjectGetOwnPropertyKeys(obj, false); | 1120 return ObjectGetOwnPropertyKeys(obj, false); |
1121 } | 1121 } |
1122 | 1122 |
1123 | 1123 |
1124 // ES5 section 15.2.3.5. | 1124 // ES5 section 15.2.3.5. |
1125 function ObjectCreate(proto, properties) { | 1125 function ObjectCreate(proto, properties) { |
1126 if (!IS_SPEC_OBJECT(proto) && proto !== null) { | 1126 if (!IS_SPEC_OBJECT(proto) && proto !== null) { |
1127 throw MakeTypeError("proto_object_or_null", [proto]); | 1127 throw MakeTypeError("proto_object_or_null", [proto]); |
1128 } | 1128 } |
1129 var obj = {}; | 1129 var obj = {}; |
1130 %InternalSetPrototype(obj, proto); | 1130 %InternalSetPrototype(obj, proto); |
1131 if (!IS_UNDEFINED(properties)) ObjectDefineProperties(obj, properties); | 1131 if (!IS_UNDEFINED(properties)) ObjectDefineProperties(obj, properties); |
1132 return obj; | 1132 return obj; |
1133 } | 1133 } |
1134 | 1134 |
1135 | 1135 |
1136 // ES5 section 15.2.3.6. | 1136 // ES5 section 15.2.3.6. |
1137 function ObjectDefineProperty(obj, p, attributes) { | 1137 function ObjectDefineProperty(obj, p, attributes) { |
1138 if (!IS_SPEC_OBJECT(obj)) { | 1138 if (!IS_SPEC_OBJECT(obj)) { |
1139 throw MakeTypeError("called_on_non_object", ["Object.defineProperty"]); | 1139 throw MakeTypeError("called_on_non_object", ["Object.defineProperty"]); |
1140 } | 1140 } |
1141 var name = ToName(p); | 1141 var name = ToName(p); |
1142 if (%IsJSProxy(obj)) { | 1142 if (%_IsJSProxy(obj)) { |
1143 // Clone the attributes object for protection. | 1143 // Clone the attributes object for protection. |
1144 // TODO(rossberg): not spec'ed yet, so not sure if this should involve | 1144 // TODO(rossberg): not spec'ed yet, so not sure if this should involve |
1145 // non-own properties as it does (or non-enumerable ones, as it doesn't?). | 1145 // non-own properties as it does (or non-enumerable ones, as it doesn't?). |
1146 var attributesClone = { __proto__: null }; | 1146 var attributesClone = { __proto__: null }; |
1147 for (var a in attributes) { | 1147 for (var a in attributes) { |
1148 attributesClone[a] = attributes[a]; | 1148 attributesClone[a] = attributes[a]; |
1149 } | 1149 } |
1150 DefineProxyProperty(obj, name, attributesClone, true); | 1150 DefineProxyProperty(obj, name, attributesClone, true); |
1151 // The following would implement the spec as in the current proposal, | 1151 // The following would implement the spec as in the current proposal, |
1152 // but after recent comments on es-discuss, is most likely obsolete. | 1152 // but after recent comments on es-discuss, is most likely obsolete. |
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1241 } | 1241 } |
1242 ObjectDefineProperties(obj, props); | 1242 ObjectDefineProperties(obj, props); |
1243 } | 1243 } |
1244 | 1244 |
1245 | 1245 |
1246 // ES5 section 15.2.3.8. | 1246 // ES5 section 15.2.3.8. |
1247 function ObjectSeal(obj) { | 1247 function ObjectSeal(obj) { |
1248 if (!IS_SPEC_OBJECT(obj)) { | 1248 if (!IS_SPEC_OBJECT(obj)) { |
1249 throw MakeTypeError("called_on_non_object", ["Object.seal"]); | 1249 throw MakeTypeError("called_on_non_object", ["Object.seal"]); |
1250 } | 1250 } |
1251 if (%IsJSProxy(obj)) { | 1251 if (%_IsJSProxy(obj)) { |
1252 ProxyFix(obj); | 1252 ProxyFix(obj); |
1253 } | 1253 } |
1254 var names = ObjectGetOwnPropertyNames(obj); | 1254 var names = ObjectGetOwnPropertyNames(obj); |
1255 for (var i = 0; i < names.length; i++) { | 1255 for (var i = 0; i < names.length; i++) { |
1256 var name = names[i]; | 1256 var name = names[i]; |
1257 var desc = GetOwnPropertyJS(obj, name); | 1257 var desc = GetOwnPropertyJS(obj, name); |
1258 if (desc.isConfigurable()) { | 1258 if (desc.isConfigurable()) { |
1259 desc.setConfigurable(false); | 1259 desc.setConfigurable(false); |
1260 DefineOwnProperty(obj, name, desc, true); | 1260 DefineOwnProperty(obj, name, desc, true); |
1261 } | 1261 } |
1262 } | 1262 } |
1263 %PreventExtensions(obj); | 1263 %PreventExtensions(obj); |
1264 return obj; | 1264 return obj; |
1265 } | 1265 } |
1266 | 1266 |
1267 | 1267 |
1268 // ES5 section 15.2.3.9. | 1268 // ES5 section 15.2.3.9. |
1269 function ObjectFreezeJS(obj) { | 1269 function ObjectFreezeJS(obj) { |
1270 if (!IS_SPEC_OBJECT(obj)) { | 1270 if (!IS_SPEC_OBJECT(obj)) { |
1271 throw MakeTypeError("called_on_non_object", ["Object.freeze"]); | 1271 throw MakeTypeError("called_on_non_object", ["Object.freeze"]); |
1272 } | 1272 } |
1273 var isProxy = %IsJSProxy(obj); | 1273 var isProxy = %_IsJSProxy(obj); |
1274 if (isProxy || %HasSloppyArgumentsElements(obj) || %IsObserved(obj)) { | 1274 if (isProxy || %HasSloppyArgumentsElements(obj) || %IsObserved(obj)) { |
1275 if (isProxy) { | 1275 if (isProxy) { |
1276 ProxyFix(obj); | 1276 ProxyFix(obj); |
1277 } | 1277 } |
1278 var names = ObjectGetOwnPropertyNames(obj); | 1278 var names = ObjectGetOwnPropertyNames(obj); |
1279 for (var i = 0; i < names.length; i++) { | 1279 for (var i = 0; i < names.length; i++) { |
1280 var name = names[i]; | 1280 var name = names[i]; |
1281 var desc = GetOwnPropertyJS(obj, name); | 1281 var desc = GetOwnPropertyJS(obj, name); |
1282 if (desc.isWritable() || desc.isConfigurable()) { | 1282 if (desc.isWritable() || desc.isConfigurable()) { |
1283 if (IsDataDescriptor(desc)) desc.setWritable(false); | 1283 if (IsDataDescriptor(desc)) desc.setWritable(false); |
1284 desc.setConfigurable(false); | 1284 desc.setConfigurable(false); |
1285 DefineOwnProperty(obj, name, desc, true); | 1285 DefineOwnProperty(obj, name, desc, true); |
1286 } | 1286 } |
1287 } | 1287 } |
1288 %PreventExtensions(obj); | 1288 %PreventExtensions(obj); |
1289 } else { | 1289 } else { |
1290 // TODO(adamk): Is it worth going to this fast path if the | 1290 // TODO(adamk): Is it worth going to this fast path if the |
1291 // object's properties are already in dictionary mode? | 1291 // object's properties are already in dictionary mode? |
1292 %ObjectFreeze(obj); | 1292 %ObjectFreeze(obj); |
1293 } | 1293 } |
1294 return obj; | 1294 return obj; |
1295 } | 1295 } |
1296 | 1296 |
1297 | 1297 |
1298 // ES5 section 15.2.3.10 | 1298 // ES5 section 15.2.3.10 |
1299 function ObjectPreventExtension(obj) { | 1299 function ObjectPreventExtension(obj) { |
1300 if (!IS_SPEC_OBJECT(obj)) { | 1300 if (!IS_SPEC_OBJECT(obj)) { |
1301 throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]); | 1301 throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]); |
1302 } | 1302 } |
1303 if (%IsJSProxy(obj)) { | 1303 if (%_IsJSProxy(obj)) { |
1304 ProxyFix(obj); | 1304 ProxyFix(obj); |
1305 } | 1305 } |
1306 %PreventExtensions(obj); | 1306 %PreventExtensions(obj); |
1307 return obj; | 1307 return obj; |
1308 } | 1308 } |
1309 | 1309 |
1310 | 1310 |
1311 // ES5 section 15.2.3.11 | 1311 // ES5 section 15.2.3.11 |
1312 function ObjectIsSealed(obj) { | 1312 function ObjectIsSealed(obj) { |
1313 if (!IS_SPEC_OBJECT(obj)) { | 1313 if (!IS_SPEC_OBJECT(obj)) { |
1314 throw MakeTypeError("called_on_non_object", ["Object.isSealed"]); | 1314 throw MakeTypeError("called_on_non_object", ["Object.isSealed"]); |
1315 } | 1315 } |
1316 if (%IsJSProxy(obj)) { | 1316 if (%_IsJSProxy(obj)) { |
1317 return false; | 1317 return false; |
1318 } | 1318 } |
1319 if (%IsExtensible(obj)) { | 1319 if (%IsExtensible(obj)) { |
1320 return false; | 1320 return false; |
1321 } | 1321 } |
1322 var names = ObjectGetOwnPropertyNames(obj); | 1322 var names = ObjectGetOwnPropertyNames(obj); |
1323 for (var i = 0; i < names.length; i++) { | 1323 for (var i = 0; i < names.length; i++) { |
1324 var name = names[i]; | 1324 var name = names[i]; |
1325 var desc = GetOwnPropertyJS(obj, name); | 1325 var desc = GetOwnPropertyJS(obj, name); |
1326 if (desc.isConfigurable()) { | 1326 if (desc.isConfigurable()) { |
1327 return false; | 1327 return false; |
1328 } | 1328 } |
1329 } | 1329 } |
1330 return true; | 1330 return true; |
1331 } | 1331 } |
1332 | 1332 |
1333 | 1333 |
1334 // ES5 section 15.2.3.12 | 1334 // ES5 section 15.2.3.12 |
1335 function ObjectIsFrozen(obj) { | 1335 function ObjectIsFrozen(obj) { |
1336 if (!IS_SPEC_OBJECT(obj)) { | 1336 if (!IS_SPEC_OBJECT(obj)) { |
1337 throw MakeTypeError("called_on_non_object", ["Object.isFrozen"]); | 1337 throw MakeTypeError("called_on_non_object", ["Object.isFrozen"]); |
1338 } | 1338 } |
1339 if (%IsJSProxy(obj)) { | 1339 if (%_IsJSProxy(obj)) { |
1340 return false; | 1340 return false; |
1341 } | 1341 } |
1342 if (%IsExtensible(obj)) { | 1342 if (%IsExtensible(obj)) { |
1343 return false; | 1343 return false; |
1344 } | 1344 } |
1345 var names = ObjectGetOwnPropertyNames(obj); | 1345 var names = ObjectGetOwnPropertyNames(obj); |
1346 for (var i = 0; i < names.length; i++) { | 1346 for (var i = 0; i < names.length; i++) { |
1347 var name = names[i]; | 1347 var name = names[i]; |
1348 var desc = GetOwnPropertyJS(obj, name); | 1348 var desc = GetOwnPropertyJS(obj, name); |
1349 if (IsDataDescriptor(desc) && desc.isWritable()) return false; | 1349 if (IsDataDescriptor(desc) && desc.isWritable()) return false; |
1350 if (desc.isConfigurable()) return false; | 1350 if (desc.isConfigurable()) return false; |
1351 } | 1351 } |
1352 return true; | 1352 return true; |
1353 } | 1353 } |
1354 | 1354 |
1355 | 1355 |
1356 // ES5 section 15.2.3.13 | 1356 // ES5 section 15.2.3.13 |
1357 function ObjectIsExtensible(obj) { | 1357 function ObjectIsExtensible(obj) { |
1358 if (!IS_SPEC_OBJECT(obj)) { | 1358 if (!IS_SPEC_OBJECT(obj)) { |
1359 throw MakeTypeError("called_on_non_object", ["Object.isExtensible"]); | 1359 throw MakeTypeError("called_on_non_object", ["Object.isExtensible"]); |
1360 } | 1360 } |
1361 if (%IsJSProxy(obj)) { | 1361 if (%_IsJSProxy(obj)) { |
1362 return true; | 1362 return true; |
1363 } | 1363 } |
1364 return %IsExtensible(obj); | 1364 return %IsExtensible(obj); |
1365 } | 1365 } |
1366 | 1366 |
1367 | 1367 |
1368 // Harmony egal. | 1368 // Harmony egal. |
1369 function ObjectIs(obj1, obj2) { | 1369 function ObjectIs(obj1, obj2) { |
1370 if (obj1 === obj2) { | 1370 if (obj1 === obj2) { |
1371 return (obj1 !== 0) || (1 / obj1 === 1 / obj2); | 1371 return (obj1 !== 0) || (1 / obj1 === 1 / obj2); |
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1907 } | 1907 } |
1908 if (!IS_SPEC_FUNCTION(method)) { | 1908 if (!IS_SPEC_FUNCTION(method)) { |
1909 throw MakeTypeError('not_iterable', [obj]); | 1909 throw MakeTypeError('not_iterable', [obj]); |
1910 } | 1910 } |
1911 var iterator = %_CallFunction(obj, method); | 1911 var iterator = %_CallFunction(obj, method); |
1912 if (!IS_SPEC_OBJECT(iterator)) { | 1912 if (!IS_SPEC_OBJECT(iterator)) { |
1913 throw MakeTypeError('not_an_iterator', [iterator]); | 1913 throw MakeTypeError('not_an_iterator', [iterator]); |
1914 } | 1914 } |
1915 return iterator; | 1915 return iterator; |
1916 } | 1916 } |
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