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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1218 %PreventExtensions(obj); | 1218 %PreventExtensions(obj); |
1219 return obj; | 1219 return obj; |
1220 } | 1220 } |
1221 | 1221 |
1222 | 1222 |
1223 // ES5 section 15.2.3.9. | 1223 // ES5 section 15.2.3.9. |
1224 function ObjectFreeze(obj) { | 1224 function ObjectFreeze(obj) { |
1225 if (!IS_SPEC_OBJECT(obj)) { | 1225 if (!IS_SPEC_OBJECT(obj)) { |
1226 throw MakeTypeError("called_on_non_object", ["Object.freeze"]); | 1226 throw MakeTypeError("called_on_non_object", ["Object.freeze"]); |
1227 } | 1227 } |
1228 var isProxy = %IsJSProxy(obj); | 1228 if (%IsJSProxy(obj)) { |
1229 if (isProxy || %HasNonStrictArgumentsElements(obj)) { | 1229 ProxyFix(obj); |
1230 if (isProxy) { | 1230 } |
1231 ProxyFix(obj); | 1231 var names = ObjectGetOwnPropertyNames(obj); |
| 1232 for (var i = 0; i < names.length; i++) { |
| 1233 var name = names[i]; |
| 1234 var desc = GetOwnProperty(obj, name); |
| 1235 if (desc.isWritable() || desc.isConfigurable()) { |
| 1236 if (IsDataDescriptor(desc)) desc.setWritable(false); |
| 1237 desc.setConfigurable(false); |
| 1238 DefineOwnProperty(obj, name, desc, true); |
1232 } | 1239 } |
1233 var names = ObjectGetOwnPropertyNames(obj); | |
1234 for (var i = 0; i < names.length; i++) { | |
1235 var name = names[i]; | |
1236 var desc = GetOwnProperty(obj, name); | |
1237 if (desc.isWritable() || desc.isConfigurable()) { | |
1238 if (IsDataDescriptor(desc)) desc.setWritable(false); | |
1239 desc.setConfigurable(false); | |
1240 DefineOwnProperty(obj, name, desc, true); | |
1241 } | |
1242 } | |
1243 %PreventExtensions(obj); | |
1244 } else { | |
1245 // TODO(adamk): Is it worth going to this fast path if the | |
1246 // object's properties are already in dictionary mode? | |
1247 %ObjectFreeze(obj); | |
1248 } | 1240 } |
| 1241 %PreventExtensions(obj); |
1249 return obj; | 1242 return obj; |
1250 } | 1243 } |
1251 | 1244 |
1252 | 1245 |
1253 // ES5 section 15.2.3.10 | 1246 // ES5 section 15.2.3.10 |
1254 function ObjectPreventExtension(obj) { | 1247 function ObjectPreventExtension(obj) { |
1255 if (!IS_SPEC_OBJECT(obj)) { | 1248 if (!IS_SPEC_OBJECT(obj)) { |
1256 throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]); | 1249 throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]); |
1257 } | 1250 } |
1258 if (%IsJSProxy(obj)) { | 1251 if (%IsJSProxy(obj)) { |
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1801 %SetCode($Function, NewFunction); | 1794 %SetCode($Function, NewFunction); |
1802 %SetProperty($Function.prototype, "constructor", $Function, DONT_ENUM); | 1795 %SetProperty($Function.prototype, "constructor", $Function, DONT_ENUM); |
1803 | 1796 |
1804 InstallFunctions($Function.prototype, DONT_ENUM, $Array( | 1797 InstallFunctions($Function.prototype, DONT_ENUM, $Array( |
1805 "bind", FunctionBind, | 1798 "bind", FunctionBind, |
1806 "toString", FunctionToString | 1799 "toString", FunctionToString |
1807 )); | 1800 )); |
1808 } | 1801 } |
1809 | 1802 |
1810 SetUpFunction(); | 1803 SetUpFunction(); |
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