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/*
* Copyright (C) 2019 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 "DirectArguments.h"
#include "JSBigInt.h"
#include "JSLexicalEnvironment.h"
#include "JSModuleEnvironment.h"
namespace JSC {
inline constexpr bool isDynamicallySizedType(JSType type)
{
if (type == DirectArgumentsType
|| type == FinalObjectType
|| type == LexicalEnvironmentType
|| type == ModuleEnvironmentType)
return true;
return false;
}
inline size_t cellSize(VM& vm, JSCell* cell)
{
Structure* structure = cell->structure(vm);
const ClassInfo* classInfo = structure->classInfo();
JSType cellType = cell->type();
if (isDynamicallySizedType(cellType)) {
switch (cellType) {
case DirectArgumentsType: {
auto* args = jsCast<DirectArguments*>(cell);
return DirectArguments::allocationSize(args->m_minCapacity);
}
case FinalObjectType:
return JSFinalObject::allocationSize(structure->inlineCapacity());
case LexicalEnvironmentType: {
auto* env = jsCast<JSLexicalEnvironment*>(cell);
return JSLexicalEnvironment::allocationSize(env->symbolTable());
}
case ModuleEnvironmentType: {
auto* env = jsCast<JSModuleEnvironment*>(cell);
return JSModuleEnvironment::allocationSize(env->symbolTable());
}
default:
RELEASE_ASSERT_NOT_REACHED();
}
}
return classInfo->staticClassSize;
}
} // namespace JSC