X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/f9bf01c6616d5ddcf65b13b33cedf9e387ff7a63..ed1e77d3adeb83d26fd1dfb16dd84cabdcefd250:/runtime/JSPropertyNameIterator.cpp?ds=inline diff --git a/runtime/JSPropertyNameIterator.cpp b/runtime/JSPropertyNameIterator.cpp deleted file mode 100644 index a5d4da0..0000000 --- a/runtime/JSPropertyNameIterator.cpp +++ /dev/null @@ -1,108 +0,0 @@ -/* - * Copyright (C) 2008, 2009 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. - * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of - * its contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "JSPropertyNameIterator.h" - -#include "JSGlobalObject.h" - -namespace JSC { - -ASSERT_CLASS_FITS_IN_CELL(JSPropertyNameIterator); - -inline JSPropertyNameIterator::JSPropertyNameIterator(ExecState* exec, PropertyNameArrayData* propertyNameArrayData, size_t numCacheableSlots) - : JSCell(exec->globalData().propertyNameIteratorStructure.get()) - , m_cachedStructure(0) - , m_numCacheableSlots(numCacheableSlots) - , m_jsStringsSize(propertyNameArrayData->propertyNameVector().size()) - , m_jsStrings(new JSValue[m_jsStringsSize]) -{ - PropertyNameArrayData::PropertyNameVector& propertyNameVector = propertyNameArrayData->propertyNameVector(); - for (size_t i = 0; i < m_jsStringsSize; ++i) - m_jsStrings[i] = jsOwnedString(exec, propertyNameVector[i].ustring()); -} - -JSPropertyNameIterator::~JSPropertyNameIterator() -{ - if (m_cachedStructure) - m_cachedStructure->clearEnumerationCache(this); -} - -JSPropertyNameIterator* JSPropertyNameIterator::create(ExecState* exec, JSObject* o) -{ - ASSERT(!o->structure()->enumerationCache() || - o->structure()->enumerationCache()->cachedStructure() != o->structure() || - o->structure()->enumerationCache()->cachedPrototypeChain() != o->structure()->prototypeChain(exec)); - - PropertyNameArray propertyNames(exec); - o->getPropertyNames(exec, propertyNames); - size_t numCacheableSlots = 0; - if (!o->structure()->hasNonEnumerableProperties() && !o->structure()->hasAnonymousSlots() && - !o->structure()->hasGetterSetterProperties() && !o->structure()->isUncacheableDictionary() && - !o->structure()->typeInfo().overridesGetPropertyNames()) - numCacheableSlots = o->structure()->propertyStorageSize(); - - JSPropertyNameIterator* jsPropertyNameIterator = new (exec) JSPropertyNameIterator(exec, propertyNames.data(), numCacheableSlots); - - if (o->structure()->isDictionary()) - return jsPropertyNameIterator; - - if (o->structure()->typeInfo().overridesGetPropertyNames()) - return jsPropertyNameIterator; - - size_t count = normalizePrototypeChain(exec, o); - StructureChain* structureChain = o->structure()->prototypeChain(exec); - RefPtr* structure = structureChain->head(); - for (size_t i = 0; i < count; ++i) { - if (structure[i]->typeInfo().overridesGetPropertyNames()) - return jsPropertyNameIterator; - } - - jsPropertyNameIterator->setCachedPrototypeChain(structureChain); - jsPropertyNameIterator->setCachedStructure(o->structure()); - o->structure()->setEnumerationCache(jsPropertyNameIterator); - return jsPropertyNameIterator; -} - -JSValue JSPropertyNameIterator::get(ExecState* exec, JSObject* base, size_t i) -{ - JSValue& identifier = m_jsStrings[i]; - if (m_cachedStructure == base->structure() && m_cachedPrototypeChain == base->structure()->prototypeChain(exec)) - return identifier; - - if (!base->hasProperty(exec, Identifier(exec, asString(identifier)->value(exec)))) - return JSValue(); - return identifier; -} - -void JSPropertyNameIterator::markChildren(MarkStack& markStack) -{ - markStack.appendValues(m_jsStrings.get(), m_jsStringsSize, MayContainNullValues); -} - -} // namespace JSC