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Diffstat (limited to 'Source/JavaScriptCore/runtime/JSSymbolTableObject.h')
| -rw-r--r-- | Source/JavaScriptCore/runtime/JSSymbolTableObject.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/JSSymbolTableObject.h b/Source/JavaScriptCore/runtime/JSSymbolTableObject.h new file mode 100644 index 000000000..2bbe21d06 --- /dev/null +++ b/Source/JavaScriptCore/runtime/JSSymbolTableObject.h @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2012 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef JSSymbolTableObject_h +#define JSSymbolTableObject_h + +#include "JSObject.h" +#include "PropertyDescriptor.h" +#include "SymbolTable.h" + +namespace JSC { + +class JSSymbolTableObject : public JSNonFinalObject { +public: + typedef JSNonFinalObject Base; + + SymbolTable& symbolTable() const { return *m_symbolTable; } + + JS_EXPORT_PRIVATE static void destroy(JSCell*); + + static NO_RETURN_DUE_TO_ASSERT void putDirectVirtual(JSObject*, ExecState*, PropertyName, JSValue, unsigned attributes); + + JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, PropertyName); + JS_EXPORT_PRIVATE static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode); + + bool isDynamicScope(bool& requiresDynamicChecks) const; + +protected: + static const unsigned StructureFlags = OverridesGetPropertyNames | JSNonFinalObject::StructureFlags; + + JSSymbolTableObject(JSGlobalData& globalData, Structure* structure, SymbolTable* symbolTable) + : JSNonFinalObject(globalData, structure) + , m_symbolTable(symbolTable) + { + } + + void finishCreation(JSGlobalData& globalData) + { + Base::finishCreation(globalData); + ASSERT(m_symbolTable); + } + + SymbolTable* m_symbolTable; +}; + +template<typename SymbolTableObjectType> +inline bool symbolTableGet( + SymbolTableObjectType* object, PropertyName propertyName, PropertySlot& slot) +{ + SymbolTable& symbolTable = object->symbolTable(); + SymbolTable::iterator iter = symbolTable.find(propertyName.publicName()); + if (iter == symbolTable.end()) + return false; + SymbolTableEntry::Fast entry = iter->second; + ASSERT(!entry.isNull()); + slot.setValue(object->registerAt(entry.getIndex()).get()); + return true; +} + +template<typename SymbolTableObjectType> +inline bool symbolTableGet( + SymbolTableObjectType* object, PropertyName propertyName, PropertyDescriptor& descriptor) +{ + SymbolTable& symbolTable = object->symbolTable(); + SymbolTable::iterator iter = symbolTable.find(propertyName.publicName()); + if (iter == symbolTable.end()) + return false; + SymbolTableEntry::Fast entry = iter->second; + ASSERT(!entry.isNull()); + descriptor.setDescriptor( + object->registerAt(entry.getIndex()).get(), entry.getAttributes() | DontDelete); + return true; +} + +template<typename SymbolTableObjectType> +inline bool symbolTableGet( + SymbolTableObjectType* object, PropertyName propertyName, PropertySlot& slot, + bool& slotIsWriteable) +{ + SymbolTable& symbolTable = object->symbolTable(); + SymbolTable::iterator iter = symbolTable.find(propertyName.publicName()); + if (iter == symbolTable.end()) + return false; + SymbolTableEntry::Fast entry = iter->second; + ASSERT(!entry.isNull()); + slot.setValue(object->registerAt(entry.getIndex()).get()); + slotIsWriteable = !entry.isReadOnly(); + return true; +} + +template<typename SymbolTableObjectType> +inline bool symbolTablePut( + SymbolTableObjectType* object, ExecState* exec, PropertyName propertyName, JSValue value, + bool shouldThrow) +{ + JSGlobalData& globalData = exec->globalData(); + ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(object)); + + SymbolTable& symbolTable = object->symbolTable(); + SymbolTable::iterator iter = symbolTable.find(propertyName.publicName()); + if (iter == symbolTable.end()) + return false; + bool wasFat; + SymbolTableEntry::Fast fastEntry = iter->second.getFast(wasFat); + ASSERT(!fastEntry.isNull()); + if (fastEntry.isReadOnly()) { + if (shouldThrow) + throwTypeError(exec, StrictModeReadonlyPropertyWriteError); + return true; + } + if (UNLIKELY(wasFat)) + iter->second.notifyWrite(); + object->registerAt(fastEntry.getIndex()).set(globalData, object, value); + return true; +} + +template<typename SymbolTableObjectType> +inline bool symbolTablePutWithAttributes( + SymbolTableObjectType* object, JSGlobalData& globalData, PropertyName propertyName, + JSValue value, unsigned attributes) +{ + ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(object)); + + SymbolTable::iterator iter = object->symbolTable().find(propertyName.publicName()); + if (iter == object->symbolTable().end()) + return false; + SymbolTableEntry& entry = iter->second; + ASSERT(!entry.isNull()); + entry.notifyWrite(); + entry.setAttributes(attributes); + object->registerAt(entry.getIndex()).set(globalData, object, value); + return true; +} + +} // namespace JSC + +#endif // JSSymbolTableObject_h + |