mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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101 lines
4.1 KiB
C++
101 lines
4.1 KiB
C++
/*
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* Copyright (C) 2015-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSLexicalEnvironment.h"
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namespace JSC {
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class AbstractModuleRecord;
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class Register;
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class JSModuleEnvironment final : public JSLexicalEnvironment {
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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 = JSLexicalEnvironment;
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static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetOwnSpecialPropertyNames;
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static JSModuleEnvironment* create(VM& vm, JSGlobalObject* globalObject, JSScope* currentScope, SymbolTable* symbolTable, JSValue initialValue, AbstractModuleRecord* moduleRecord)
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{
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Structure* structure = globalObject->moduleEnvironmentStructure();
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return create(vm, structure, currentScope, symbolTable, initialValue, moduleRecord);
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}
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DECLARE_INFO;
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static Structure* createStructure(VM& vm, JSGlobalObject* globalObject)
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{
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return Structure::create(vm, globalObject, jsNull(), TypeInfo(ModuleEnvironmentType, StructureFlags), info());
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}
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static size_t offsetOfModuleRecord(SymbolTable* symbolTable)
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{
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size_t offset = Base::allocationSize(symbolTable);
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ASSERT(WTF::roundUpToMultipleOf<sizeof(WriteBarrier<AbstractModuleRecord>)>(offset) == offset);
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return offset;
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}
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static size_t allocationSize(SymbolTable* symbolTable)
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{
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return offsetOfModuleRecord(symbolTable) + sizeof(WriteBarrier<AbstractModuleRecord>);
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}
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AbstractModuleRecord* moduleRecord()
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{
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return moduleRecordSlot().get();
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}
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static bool getOwnPropertySlot(JSObject*, JSGlobalObject*, PropertyName, PropertySlot&);
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static void getOwnSpecialPropertyNames(JSObject*, JSGlobalObject*, PropertyNameArray&, DontEnumPropertiesMode);
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static bool put(JSCell*, JSGlobalObject*, PropertyName, JSValue, PutPropertySlot&);
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static bool deleteProperty(JSCell*, JSGlobalObject*, PropertyName, DeletePropertySlot&);
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private:
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JSModuleEnvironment(VM&, Structure*, JSScope*, SymbolTable*);
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static JSModuleEnvironment* create(VM&, Structure*, JSScope*, SymbolTable*, JSValue initialValue, AbstractModuleRecord*);
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void finishCreation(VM&, JSValue initialValue, AbstractModuleRecord*);
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WriteBarrierBase<AbstractModuleRecord>& moduleRecordSlot()
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{
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return *bitwise_cast<WriteBarrierBase<AbstractModuleRecord>*>(bitwise_cast<char*>(this) + offsetOfModuleRecord(symbolTable()));
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}
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static void visitChildren(JSCell*, SlotVisitor&);
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};
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inline JSModuleEnvironment::JSModuleEnvironment(VM& vm, Structure* structure, JSScope* currentScope, SymbolTable* symbolTable)
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: Base(vm, structure, currentScope, symbolTable)
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{
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}
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} // namespace JSC
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