/*
- * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2007, 2008, 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
* 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
+ * 3. Neither the name of Apple 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.
*
#define JSVariableObject_h
#include "JSObject.h"
+#include "JSSymbolTableObject.h"
#include "Register.h"
#include "SymbolTable.h"
-#include "UnusedParam.h"
-#include <wtf/OwnArrayPtr.h>
-#include <wtf/UnusedParam.h>
namespace JSC {
- class Register;
+class LLIntOffsetsExtractor;
+class Register;
- class JSVariableObject : public JSNonFinalObject {
- friend class JIT;
+class JSVariableObject : public JSSymbolTableObject {
+ friend class JIT;
+ friend class LLIntOffsetsExtractor;
- public:
- SymbolTable& symbolTable() const { return *m_symbolTable; }
+public:
+ typedef JSSymbolTableObject Base;
- virtual void putWithAttributes(ExecState*, const Identifier&, JSValue, unsigned attributes) = 0;
+ WriteBarrierBase<Unknown>* registers() { return m_registers; }
+ WriteBarrierBase<Unknown>& registerAt(int index) const { return m_registers[index]; }
- virtual bool deleteProperty(ExecState*, const Identifier&);
- virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
-
- virtual bool isVariableObject() const;
- virtual bool isDynamicScope(bool& requiresDynamicChecks) const = 0;
+ WriteBarrierBase<Unknown>* const * addressOfRegisters() const { return &m_registers; }
+ static size_t offsetOfRegisters() { return OBJECT_OFFSETOF(JSVariableObject, m_registers); }
- WriteBarrier<Unknown>& registerAt(int index) const { return m_registers[index]; }
+ DECLARE_INFO;
- WriteBarrier<Unknown>* const * addressOfRegisters() const { return &m_registers; }
+protected:
+ static const unsigned StructureFlags = Base::StructureFlags;
- static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
- {
- return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
- }
-
- protected:
- static const unsigned StructureFlags = OverridesGetPropertyNames | JSObject::StructureFlags;
-
- JSVariableObject(JSGlobalData& globalData, Structure* structure, SymbolTable* symbolTable, Register* registers)
- : JSNonFinalObject(globalData, structure)
- , m_symbolTable(symbolTable)
- , m_registers(reinterpret_cast<WriteBarrier<Unknown>*>(registers))
- {
- ASSERT(m_symbolTable);
- COMPILE_ASSERT(sizeof(WriteBarrier<Unknown>) == sizeof(Register), Register_should_be_same_size_as_WriteBarrier);
- }
-
- PassOwnArrayPtr<WriteBarrier<Unknown> > copyRegisterArray(JSGlobalData&, WriteBarrier<Unknown>* src, size_t count, size_t callframeStarts);
- void setRegisters(WriteBarrier<Unknown>* registers, PassOwnArrayPtr<WriteBarrier<Unknown> > registerArray);
-
- bool symbolTableGet(const Identifier&, PropertySlot&);
- bool symbolTableGet(const Identifier&, PropertyDescriptor&);
- bool symbolTableGet(const Identifier&, PropertySlot&, bool& slotIsWriteable);
- bool symbolTablePut(JSGlobalData&, const Identifier&, JSValue);
- bool symbolTablePutWithAttributes(JSGlobalData&, const Identifier&, JSValue, unsigned attributes);
-
- SymbolTable* m_symbolTable; // Maps name -> offset from "r" in register file.
- WriteBarrier<Unknown>* m_registers; // "r" in the register file.
- OwnArrayPtr<WriteBarrier<Unknown> > m_registerArray; // Independent copy of registers, used when a variable object copies its registers out of the register file.
- };
-
- inline bool JSVariableObject::symbolTableGet(const Identifier& propertyName, PropertySlot& slot)
- {
- SymbolTableEntry entry = symbolTable().inlineGet(propertyName.impl());
- if (!entry.isNull()) {
- slot.setValue(registerAt(entry.getIndex()).get());
- return true;
- }
- return false;
- }
-
- inline bool JSVariableObject::symbolTableGet(const Identifier& propertyName, PropertySlot& slot, bool& slotIsWriteable)
- {
- SymbolTableEntry entry = symbolTable().inlineGet(propertyName.impl());
- if (!entry.isNull()) {
- slot.setValue(registerAt(entry.getIndex()).get());
- slotIsWriteable = !entry.isReadOnly();
- return true;
- }
- return false;
- }
-
- inline bool JSVariableObject::symbolTablePut(JSGlobalData& globalData, const Identifier& propertyName, JSValue value)
+ JSVariableObject(
+ VM& vm,
+ Structure* structure,
+ Register* registers,
+ JSScope* scope,
+ SymbolTable* symbolTable = 0)
+ : Base(vm, structure, scope, symbolTable)
+ , m_registers(reinterpret_cast<WriteBarrierBase<Unknown>*>(registers))
{
- ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
-
- SymbolTableEntry entry = symbolTable().inlineGet(propertyName.impl());
- if (entry.isNull())
- return false;
- if (entry.isReadOnly())
- return true;
- registerAt(entry.getIndex()).set(globalData, this, value);
- return true;
- }
-
- inline bool JSVariableObject::symbolTablePutWithAttributes(JSGlobalData& globalData, const Identifier& propertyName, JSValue value, unsigned attributes)
- {
- ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
-
- SymbolTable::iterator iter = symbolTable().find(propertyName.impl());
- if (iter == symbolTable().end())
- return false;
- SymbolTableEntry& entry = iter->second;
- ASSERT(!entry.isNull());
- entry.setAttributes(attributes);
- registerAt(entry.getIndex()).set(globalData, this, value);
- return true;
}
- inline PassOwnArrayPtr<WriteBarrier<Unknown> > JSVariableObject::copyRegisterArray(JSGlobalData& globalData, WriteBarrier<Unknown>* src, size_t count, size_t callframeStarts)
- {
- OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[count]);
- for (size_t i = 0; i < callframeStarts; i++)
- registerArray[i].set(globalData, this, src[i].get());
- for (size_t i = callframeStarts + RegisterFile::CallFrameHeaderSize; i < count; i++)
- registerArray[i].set(globalData, this, src[i].get());
-
- return registerArray.release();
- }
-
- inline void JSVariableObject::setRegisters(WriteBarrier<Unknown>* registers, PassOwnArrayPtr<WriteBarrier<Unknown> > registerArray)
- {
- ASSERT(registerArray != m_registerArray);
- m_registerArray = registerArray;
- m_registers = registers;
- }
+ WriteBarrierBase<Unknown>* m_registers; // "r" in the stack.
+};
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff