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/*
* Copyright (C) 2012-2022 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "UnlinkedGlobalCodeBlock.h"
#include <wtf/FixedVector.h>
namespace JSC {
class CachedEvalCodeBlock;
class UnlinkedEvalCodeBlock final : public UnlinkedGlobalCodeBlock {
public:
typedef UnlinkedGlobalCodeBlock Base;
static constexpr unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return vm.unlinkedEvalCodeBlockSpace<mode>();
}
static UnlinkedEvalCodeBlock* create(VM& vm, const ExecutableInfo& info, OptionSet<CodeGenerationMode> codeGenerationMode)
{
UnlinkedEvalCodeBlock* instance = new (NotNull, allocateCell<UnlinkedEvalCodeBlock>(vm)) UnlinkedEvalCodeBlock(vm, vm.unlinkedEvalCodeBlockStructure.get(), info, codeGenerationMode);
instance->finishCreation(vm);
return instance;
}
static void destroy(JSCell*);
const Identifier& variable(unsigned index) { return m_variables[index]; }
unsigned numVariables() { return m_variables.size(); }
void adoptVariables(Vector<Identifier, 0, UnsafeVectorOverflow>&& variables)
{
ASSERT(m_variables.isEmpty());
m_variables = FixedVector<Identifier>(WTFMove(variables));
}
const Identifier& functionHoistingCandidate(unsigned index) { return m_functionHoistingCandidates[index]; }
unsigned numFunctionHoistingCandidates() { return m_functionHoistingCandidates.size(); }
void adoptFunctionHoistingCandidates(Vector<Identifier, 0, UnsafeVectorOverflow>&& functionHoistingCandidates)
{
ASSERT(m_functionHoistingCandidates.isEmpty());
m_functionHoistingCandidates = FixedVector<Identifier>(WTFMove(functionHoistingCandidates));
}
private:
friend CachedEvalCodeBlock;
UnlinkedEvalCodeBlock(VM& vm, Structure* structure, const ExecutableInfo& info, OptionSet<CodeGenerationMode> codeGenerationMode)
: Base(vm, structure, EvalCode, info, codeGenerationMode)
{
}
UnlinkedEvalCodeBlock(Decoder&, const CachedEvalCodeBlock&);
FixedVector<Identifier> m_variables;
FixedVector<Identifier> m_functionHoistingCandidates;
public:
inline static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
DECLARE_INFO;
};
}
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