JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / runtime / JSPropertyNameIterator.cpp

diff --git a/runtime/JSPropertyNameIterator.cpp b/runtime/JSPropertyNameIterator.cpp
deleted file mode 100644 (file)
index b595980..0000000
--- a/runtime/JSPropertyNameIterator.cpp
+++ /dev/null
@@ -1,114 +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 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 "JSCInlines.h"
-#include "JSGlobalObject.h"
-#include <wtf/StdLibExtras.h>
-
-namespace JSC {
-
-const ClassInfo JSPropertyNameIterator::s_info = { "JSPropertyNameIterator", 0, 0, 0, CREATE_METHOD_TABLE(JSPropertyNameIterator) };
-
-inline JSPropertyNameIterator::JSPropertyNameIterator(ExecState* exec, PropertyNameArrayData* propertyNameArrayData, size_t numCacheableSlots)
-    : JSCell(exec->vm(), exec->vm().propertyNameIteratorStructure.get())
-    , m_numCacheableSlots(numCacheableSlots)
-    , m_jsStringsSize(propertyNameArrayData->propertyNameVector().size())
-    , m_jsStrings(m_jsStringsSize ? std::make_unique<WriteBarrier<Unknown>[]>(m_jsStringsSize) : nullptr)
-{
-}
-
-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));
-
-    VM& vm = exec->vm();
-
-    PropertyNameArray propertyNames(exec);
-    o->methodTable()->getPropertyNames(o, exec, propertyNames, ExcludeDontEnumProperties);
-    size_t numCacheableSlots = 0;
-    if (!o->structure()->hasNonEnumerableProperties() && !o->structure()->hasGetterSetterProperties()
-        && !o->structure()->isUncacheableDictionary() && !o->structure()->typeInfo().overridesGetPropertyNames())
-        numCacheableSlots = propertyNames.numCacheableSlots();
-    
-    JSPropertyNameIterator* jsPropertyNameIterator = new (NotNull, allocateCell<JSPropertyNameIterator>(vm.heap)) JSPropertyNameIterator(exec, propertyNames.data(), numCacheableSlots);
-    jsPropertyNameIterator->finishCreation(vm, propertyNames.data(), o);
-
-    if (o->structure()->isDictionary())
-        return jsPropertyNameIterator;
-
-    if (o->structure()->typeInfo().overridesGetPropertyNames())
-        return jsPropertyNameIterator;
-    
-    if (hasIndexedProperties(o->indexingType()))
-        return jsPropertyNameIterator;
-    
-    size_t count = normalizePrototypeChain(exec, o);
-    StructureChain* structureChain = o->structure()->prototypeChain(exec);
-    WriteBarrier<Structure>* structure = structureChain->head();
-    for (size_t i = 0; i < count; ++i) {
-        if (structure[i]->typeInfo().overridesGetPropertyNames())
-            return jsPropertyNameIterator;
-    }
-
-    jsPropertyNameIterator->setCachedPrototypeChain(vm, structureChain);
-    jsPropertyNameIterator->setCachedStructure(vm, o->structure());
-    o->structure()->setEnumerationCache(vm, jsPropertyNameIterator);
-    return jsPropertyNameIterator;
-}
-
-void JSPropertyNameIterator::destroy(JSCell* cell)
-{
-    static_cast<JSPropertyNameIterator*>(cell)->JSPropertyNameIterator::~JSPropertyNameIterator();
-}
-
-JSValue JSPropertyNameIterator::get(ExecState* exec, JSObject* base, size_t i)
-{
-    JSValue identifier = m_jsStrings[i].get();
-    if (m_cachedStructure.get() == base->structure() && m_cachedPrototypeChain.get() == base->structure()->prototypeChain(exec))
-        return identifier;
-
-    if (!base->hasProperty(exec, Identifier(exec, asString(identifier)->value(exec))))
-        return JSValue();
-    return identifier;
-}
-
-void JSPropertyNameIterator::visitChildren(JSCell* cell, SlotVisitor& visitor)
-{
-    JSPropertyNameIterator* thisObject = jsCast<JSPropertyNameIterator*>(cell);
-    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
-    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
-    visitor.appendValues(thisObject->m_jsStrings.get(), thisObject->m_jsStringsSize);
-    visitor.append(&thisObject->m_cachedPrototypeChain);
-}
-
-} // namespace JSC