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/*
* 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 "JSObjectWithGlobalObject.h"
namespace JSC {
class ExecutableBase;
class FunctionExecutable;
class FunctionPrototype;
class JSActivation;
class JSGlobalObject;
class NativeExecutable;
class VPtrHackExecutable;
EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
class JSFunction : public JSObjectWithGlobalObject {
friend class JIT;
friend class JSGlobalData;
typedef JSObjectWithGlobalObject Base;
public:
JSFunction(ExecState*, JSGlobalObject*, NonNullPassRefPtr<Structure>, int length, const Identifier&, NativeFunction);
JSFunction(ExecState*, JSGlobalObject*, NonNullPassRefPtr<Structure>, int length, const Identifier&, NativeExecutable*);
JSFunction(ExecState*, FunctionExecutable*, ScopeChainNode*);
virtual ~JSFunction();
const UString& name(ExecState*);
const UString displayName(ExecState*);
const UString calculatedDisplayName(ExecState*);
ScopeChainNode* scope()
{
ASSERT(!isHostFunctionNonInline());
return m_scopeChain.get();
}
void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
{
ASSERT(!isHostFunctionNonInline());
m_scopeChain.set(globalData, this, 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 s_info;
static PassRefPtr<Structure> createStructure(JSGlobalData& globalData, JSValue prototype)
{
return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
}
NativeFunction nativeFunction();
virtual ConstructType getConstructData(ConstructData&);
virtual CallType getCallData(CallData&);
protected:
const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesMarkChildren | OverridesGetPropertyNames | JSObject::StructureFlags;
private:
JSFunction(NonNullPassRefPtr<Structure>, VPtrHackExecutable*);
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&);
static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&);
static JSValue callerGetter(ExecState*, JSValue, const Identifier&);
static JSValue lengthGetter(ExecState*, JSValue, const Identifier&);
WriteBarrier<ExecutableBase> m_executable;
WriteBarrier<ScopeChainNode> m_scopeChain;
};
JSFunction* asFunction(JSValue);
inline JSFunction* asFunction(JSValue value)
{
ASSERT(asObject(value)->inherits(&JSFunction::s_info));
return static_cast<JSFunction*>(asObject(value));
}
} // namespace JSC
#endif // JSFunction_h
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