Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 90 insertions, 0 deletions

diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSPropertyNameIterator.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSPropertyNameIterator.cpp
new file mode 100644
index 0000000..d3dcb83
--- /dev/null
+++ b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSPropertyNameIterator.cpp
@@ -0,0 +1,90 @@
+/*
+ * 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);
+
+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>* 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