mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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104 lines
3.9 KiB
C++
104 lines
3.9 KiB
C++
/*
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* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
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* Copyright (C) 2003-2019 Apple Inc. All rights reserved.
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* Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca)
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* Copyright (C) 2007 Maks Orlovich
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "CodeSpecializationKind.h"
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#include "JSDestructibleObject.h"
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namespace JSC {
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class FunctionPrototype;
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class InternalFunction : public JSNonFinalObject {
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friend class JIT;
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friend class LLIntOffsetsExtractor;
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public:
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using Base = JSNonFinalObject;
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static constexpr unsigned StructureFlags = Base::StructureFlags | ImplementsHasInstance | ImplementsDefaultHasInstance | OverridesGetCallData;
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template<typename CellType, SubspaceAccess>
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static IsoSubspace* subspaceFor(VM& vm)
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{
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static_assert(sizeof(CellType) == sizeof(InternalFunction), "InternalFunction subclasses that add fields need to override subspaceFor<>()");
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return &vm.internalFunctionSpace;
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}
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DECLARE_EXPORT_INFO;
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JS_EXPORT_PRIVATE static void visitChildren(JSCell*, SlotVisitor&);
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JS_EXPORT_PRIVATE const String& name();
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const String displayName(VM&);
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const String calculatedDisplayName(VM&);
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static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
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{
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return Structure::create(vm, globalObject, proto, TypeInfo(InternalFunctionType, StructureFlags), info());
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}
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JS_EXPORT_PRIVATE static Structure* createSubclassStructure(JSGlobalObject*, JSObject* newTarget, Structure*);
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JS_EXPORT_PRIVATE static InternalFunction* createFunctionThatMasqueradesAsUndefined(VM&, JSGlobalObject*, unsigned length, const String& name, NativeFunction);
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TaggedNativeFunction nativeFunctionFor(CodeSpecializationKind kind)
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{
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if (kind == CodeForCall)
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return m_functionForCall;
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ASSERT(kind == CodeForConstruct);
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return m_functionForConstruct;
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}
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static ptrdiff_t offsetOfNativeFunctionFor(CodeSpecializationKind kind)
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{
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if (kind == CodeForCall)
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return OBJECT_OFFSETOF(InternalFunction, m_functionForCall);
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ASSERT(kind == CodeForConstruct);
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return OBJECT_OFFSETOF(InternalFunction, m_functionForConstruct);
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}
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static ptrdiff_t offsetOfGlobalObject()
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{
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return OBJECT_OFFSETOF(InternalFunction, m_globalObject);
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}
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JSGlobalObject* globalObject() const { return m_globalObject.get(); }
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protected:
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JS_EXPORT_PRIVATE InternalFunction(VM&, Structure*, NativeFunction functionForCall, NativeFunction functionForConstruct = nullptr);
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enum class PropertyAdditionMode { WithStructureTransition, WithoutStructureTransition };
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JS_EXPORT_PRIVATE void finishCreation(VM&, unsigned length, const String& name, PropertyAdditionMode = PropertyAdditionMode::WithStructureTransition);
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JS_EXPORT_PRIVATE static CallData getConstructData(JSCell*);
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JS_EXPORT_PRIVATE static CallData getCallData(JSCell*);
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TaggedNativeFunction m_functionForCall;
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TaggedNativeFunction m_functionForConstruct;
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WriteBarrier<JSString> m_originalName;
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WriteBarrier<JSGlobalObject> m_globalObject;
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};
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JS_EXPORT_PRIVATE JSGlobalObject* getFunctionRealm(VM&, JSObject*);
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} // namespace JSC
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