| | 1 | /* |
| | 2 | * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
| | 3 | * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. |
| | 4 | * |
| | 5 | * This library is free software; you can redistribute it and/or |
| | 6 | * modify it under the terms of the GNU Lesser General Public |
| | 7 | * License as published by the Free Software Foundation; either |
| | 8 | * version 2 of the License, or (at your option) any later version. |
| | 9 | * |
| | 10 | * This library is distributed in the hope that it will be useful, |
| | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| | 13 | * Lesser General Public License for more details. |
| | 14 | * |
| | 15 | * You should have received a copy of the GNU Lesser General Public |
| | 16 | * License along with this library; if not, write to the Free Software |
| | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| | 18 | * |
| | 19 | */ |
| | 20 | |
| | 21 | #ifndef StringObjectThatMasqueradesAsUndefined_h |
| | 22 | #define StringObjectThatMasqueradesAsUndefined_h |
| | 23 | |
| | 24 | #include "JSGlobalObject.h" |
| | 25 | #include "StringObject.h" |
| | 26 | #include "UString.h" |
| | 27 | |
| | 28 | namespace JSC { |
| | 29 | |
| | 30 | // WebCore uses this to make style.filter undetectable |
| | 31 | class StringObjectThatMasqueradesAsUndefined : public StringObject { |
| | 32 | public: |
| | 33 | static StringObjectThatMasqueradesAsUndefined* create(ExecState* exec, const UString& string) |
| | 34 | { |
| | 35 | return new (exec) StringObjectThatMasqueradesAsUndefined(exec, |
| | 36 | createStructure(exec->lexicalGlobalObject()->stringPrototype()), string); |
| | 37 | } |
| | 38 | |
| | 39 | private: |
| | 40 | StringObjectThatMasqueradesAsUndefined(ExecState* exec, PassRefPtr<Structure> structure, const UString& string) |
| | 41 | : StringObject(exec, structure, string) |
| | 42 | { |
| | 43 | } |
| | 44 | |
| | 45 | static PassRefPtr<Structure> createStructure(JSValuePtr proto) |
| | 46 | { |
| | 47 | return Structure::create(proto, TypeInfo(ObjectType, MasqueradesAsUndefined)); |
| | 48 | } |
| | 49 | |
| | 50 | virtual bool toBoolean(ExecState*) const { return false; } |
| | 51 | }; |
| | 52 | |
| | 53 | } // namespace JSC |
| | 54 | |
| | 55 | #endif // StringObjectThatMasqueradesAsUndefined_h |
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