/* * 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