mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-16 13:59:53 +00:00
107 lines
4.2 KiB
C++
107 lines
4.2 KiB
C++
/*
|
|
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
|
|
* Copyright (C) 2003-2019 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.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "CodeSpecializationKind.h"
|
|
#include "JSDestructibleObject.h"
|
|
|
|
namespace JSC {
|
|
|
|
class FunctionPrototype;
|
|
|
|
class InternalFunction : public JSDestructibleObject {
|
|
friend class JIT;
|
|
friend class LLIntOffsetsExtractor;
|
|
public:
|
|
typedef JSDestructibleObject Base;
|
|
static const unsigned StructureFlags = Base::StructureFlags | ImplementsHasInstance | ImplementsDefaultHasInstance | OverridesGetCallData;
|
|
|
|
template<typename CellType, SubspaceAccess>
|
|
static IsoSubspace* subspaceFor(VM& vm)
|
|
{
|
|
static_assert(sizeof(CellType) == sizeof(InternalFunction), "InternalFunction subclasses that add fields need to override subspaceFor<>()");
|
|
return &vm.internalFunctionSpace;
|
|
}
|
|
|
|
DECLARE_EXPORT_INFO;
|
|
|
|
JS_EXPORT_PRIVATE static void visitChildren(JSCell*, SlotVisitor&);
|
|
|
|
JS_EXPORT_PRIVATE const String& name();
|
|
const String displayName(VM&);
|
|
const String calculatedDisplayName(VM&);
|
|
|
|
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
|
|
{
|
|
return Structure::create(vm, globalObject, proto, TypeInfo(InternalFunctionType, StructureFlags), info());
|
|
}
|
|
|
|
static Structure* createSubclassStructure(ExecState*, JSValue newTarget, Structure*);
|
|
|
|
TaggedNativeFunction nativeFunctionFor(CodeSpecializationKind kind)
|
|
{
|
|
if (kind == CodeForCall)
|
|
return m_functionForCall;
|
|
ASSERT(kind == CodeForConstruct);
|
|
return m_functionForConstruct;
|
|
}
|
|
|
|
static ptrdiff_t offsetOfNativeFunctionFor(CodeSpecializationKind kind)
|
|
{
|
|
if (kind == CodeForCall)
|
|
return OBJECT_OFFSETOF(InternalFunction, m_functionForCall);
|
|
ASSERT(kind == CodeForConstruct);
|
|
return OBJECT_OFFSETOF(InternalFunction, m_functionForConstruct);
|
|
}
|
|
|
|
protected:
|
|
JS_EXPORT_PRIVATE InternalFunction(VM&, Structure*, NativeFunction functionForCall, NativeFunction functionForConstruct);
|
|
|
|
enum class NameVisibility { Visible, Anonymous };
|
|
enum class NameAdditionMode { WithStructureTransition, WithoutStructureTransition };
|
|
JS_EXPORT_PRIVATE void finishCreation(VM&, const String& name, NameVisibility = NameVisibility::Visible, NameAdditionMode = NameAdditionMode::WithStructureTransition);
|
|
|
|
JS_EXPORT_PRIVATE static Structure* createSubclassStructureSlow(ExecState*, JSValue newTarget, Structure*);
|
|
|
|
JS_EXPORT_PRIVATE static ConstructType getConstructData(JSCell*, ConstructData&);
|
|
JS_EXPORT_PRIVATE static CallType getCallData(JSCell*, CallData&);
|
|
|
|
TaggedNativeFunction m_functionForCall;
|
|
TaggedNativeFunction m_functionForConstruct;
|
|
WriteBarrier<JSString> m_originalName;
|
|
};
|
|
|
|
ALWAYS_INLINE Structure* InternalFunction::createSubclassStructure(ExecState* exec, JSValue newTarget, Structure* baseClass)
|
|
{
|
|
// We allow newTarget == JSValue() because the API needs to be able to create classes without having a real JS frame.
|
|
// Since we don't allow subclassing in the API we just treat newTarget == JSValue() as newTarget == exec->jsCallee()
|
|
ASSERT(!newTarget || newTarget.isConstructor(exec->vm()));
|
|
|
|
if (newTarget && newTarget != exec->jsCallee())
|
|
return createSubclassStructureSlow(exec, newTarget, baseClass);
|
|
return baseClass;
|
|
}
|
|
|
|
} // namespace JSC
|