/* | |
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org) | |
* Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. | |
* Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca) | |
* Copyright (C) 2007 Maks Orlovich | |
* | |
* This library is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU Library General Public | |
* License as published by the Free Software Foundation; either | |
* version 2 of the License, or (at your option) any later version. | |
* | |
* This library is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
* Library General Public License for more details. | |
* | |
* You should have received a copy of the GNU Library General Public License | |
* along with this library; see the file COPYING.LIB. If not, write to | |
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
* Boston, MA 02110-1301, USA. | |
* | |
*/ | |
#ifndef JSFunction_h | |
#define JSFunction_h | |
#include "InternalFunction.h" | |
namespace JSC { | |
class ExecutableBase; | |
class FunctionExecutable; | |
class FunctionPrototype; | |
class JSActivation; | |
class JSGlobalObject; | |
class JSFunction : public InternalFunction { | |
friend class JIT; | |
friend class JSGlobalData; | |
typedef InternalFunction Base; | |
public: | |
JSFunction(ExecState*, NonNullPassRefPtr<Structure>, int length, const Identifier&, NativeFunction); | |
JSFunction(ExecState*, NonNullPassRefPtr<FunctionExecutable>, ScopeChainNode*); | |
virtual ~JSFunction(); | |
JSObject* construct(ExecState*, const ArgList&); | |
JSValue call(ExecState*, JSValue thisValue, const ArgList&); | |
void setScope(const ScopeChain& scopeChain) { setScopeChain(scopeChain); } | |
ScopeChain& scope() { return scopeChain(); } | |
ExecutableBase* executable() const { return m_executable.get(); } | |
// To call either of these methods include Executable.h | |
inline bool isHostFunction() const; | |
FunctionExecutable* jsExecutable() const; | |
static JS_EXPORTDATA const ClassInfo info; | |
static PassRefPtr<Structure> createStructure(JSValue prototype) | |
{ | |
return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount); | |
} | |
NativeFunction nativeFunction() | |
{ | |
return *WTF::bitwise_cast<NativeFunction*>(m_data); | |
} | |
virtual ConstructType getConstructData(ConstructData&); | |
virtual CallType getCallData(CallData&); | |
protected: | |
const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesMarkChildren | OverridesGetPropertyNames | InternalFunction::StructureFlags; | |
private: | |
JSFunction(NonNullPassRefPtr<Structure>); | |
bool isHostFunctionNonInline() const; | |
virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&); | |
virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&); | |
virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties); | |
virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&); | |
virtual bool deleteProperty(ExecState*, const Identifier& propertyName); | |
virtual void markChildren(MarkStack&); | |
virtual const ClassInfo* classInfo() const { return &info; } | |
static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&); | |
static JSValue callerGetter(ExecState*, JSValue, const Identifier&); | |
static JSValue lengthGetter(ExecState*, JSValue, const Identifier&); | |
RefPtr<ExecutableBase> m_executable; | |
ScopeChain& scopeChain() | |
{ | |
ASSERT(!isHostFunctionNonInline()); | |
return *WTF::bitwise_cast<ScopeChain*>(m_data); | |
} | |
void clearScopeChain() | |
{ | |
ASSERT(!isHostFunctionNonInline()); | |
new (m_data) ScopeChain(NoScopeChain()); | |
} | |
void setScopeChain(ScopeChainNode* sc) | |
{ | |
ASSERT(!isHostFunctionNonInline()); | |
new (m_data) ScopeChain(sc); | |
} | |
void setScopeChain(const ScopeChain& sc) | |
{ | |
ASSERT(!isHostFunctionNonInline()); | |
*WTF::bitwise_cast<ScopeChain*>(m_data) = sc; | |
} | |
void setNativeFunction(NativeFunction func) | |
{ | |
*WTF::bitwise_cast<NativeFunction*>(m_data) = func; | |
} | |
unsigned char m_data[sizeof(void*)]; | |
}; | |
JSFunction* asFunction(JSValue); | |
inline JSFunction* asFunction(JSValue value) | |
{ | |
ASSERT(asObject(value)->inherits(&JSFunction::info)); | |
return static_cast<JSFunction*>(asObject(value)); | |
} | |
} // namespace JSC | |
#endif // JSFunction_h |