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Diffstat (limited to 'Source/JavaScriptCore/runtime/IntendedStructureChain.cpp')
-rw-r--r-- | Source/JavaScriptCore/runtime/IntendedStructureChain.cpp | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/Source/JavaScriptCore/runtime/IntendedStructureChain.cpp b/Source/JavaScriptCore/runtime/IntendedStructureChain.cpp deleted file mode 100644 index b38dae9f8..000000000 --- a/Source/JavaScriptCore/runtime/IntendedStructureChain.cpp +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright (C) 2013 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 COMPUTER, 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 COMPUTER, 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. - */ - -#include "config.h" -#include "IntendedStructureChain.h" - -#include "CodeBlock.h" -#include "Operations.h" -#include "StructureChain.h" - -namespace JSC { - -IntendedStructureChain::IntendedStructureChain(JSGlobalObject* globalObject, Structure* head) - : m_globalObject(globalObject) - , m_head(head) -{ - JSValue prototype = head->prototypeForLookup(globalObject); - if (prototype.isNull()) - return; - for (Structure* current = asObject(prototype)->structure(); current; current = current->storedPrototypeStructure()) - m_vector.append(current); -} - -IntendedStructureChain::IntendedStructureChain(CodeBlock* codeBlock, Structure* head, Structure* prototypeStructure) - : m_globalObject(codeBlock->globalObject()) - , m_head(head) -{ - m_vector.append(prototypeStructure); -} - -IntendedStructureChain::IntendedStructureChain(CodeBlock* codeBlock, Structure* head, StructureChain* chain) - : m_globalObject(codeBlock->globalObject()) - , m_head(head) -{ - for (unsigned i = 0; chain->head()[i]; ++i) - m_vector.append(chain->head()[i].get()); -} - -IntendedStructureChain::IntendedStructureChain(CodeBlock* codeBlock, Structure* head, StructureChain* chain, unsigned count) - : m_globalObject(codeBlock->globalObject()) - , m_head(head) -{ - for (unsigned i = 0; i < count; ++i) - m_vector.append(chain->head()[i].get()); -} - -IntendedStructureChain::~IntendedStructureChain() -{ -} - -bool IntendedStructureChain::isStillValid() const -{ - JSValue currentPrototype = m_head->prototypeForLookup(m_globalObject); - for (unsigned i = 0; i < m_vector.size(); ++i) { - if (asObject(currentPrototype)->structure() != m_vector[i]) - return false; - currentPrototype = m_vector[i]->storedPrototype(); - } - return true; -} - -bool IntendedStructureChain::matches(StructureChain* chain) const -{ - for (unsigned i = 0; i < m_vector.size(); ++i) { - if (m_vector[i] != chain->head()[i].get()) - return false; - } - if (chain->head()[m_vector.size()]) - return false; - return true; -} - -StructureChain* IntendedStructureChain::chain(VM& vm) const -{ - ASSERT(isStillValid()); - StructureChain* result = StructureChain::create(vm, m_head); - ASSERT(matches(result)); - return result; -} - -bool IntendedStructureChain::mayInterceptStoreTo(VM& vm, StringImpl* uid) -{ - for (unsigned i = 0; i < m_vector.size(); ++i) { - unsigned attributes; - JSCell* specificValue; - PropertyOffset offset = m_vector[i]->getConcurrently(vm, uid, attributes, specificValue); - if (!isValidOffset(offset)) - continue; - if (attributes & (ReadOnly | Accessor)) - return true; - return false; - } - return false; -} - -bool IntendedStructureChain::isNormalized() -{ - if (m_head->typeInfo().type() == ProxyType) - return false; - for (unsigned i = 0; i < m_vector.size(); ++i) { - Structure* structure = m_vector[i]; - if (structure->typeInfo().type() == ProxyType) - return false; - if (structure->isDictionary()) - return false; - } - return true; -} - -JSObject* IntendedStructureChain::terminalPrototype() const -{ - ASSERT(!m_vector.isEmpty()); - if (m_vector.size() == 1) - return asObject(m_head->prototypeForLookup(m_globalObject)); - return asObject(m_vector[m_vector.size() - 2]->storedPrototype()); -} - -} // namespace JSC - |