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/*
* Copyright (C) 2007, 2009, 2010 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.
*/
#ifndef JSNodeCustom_h
#define JSNodeCustom_h
#include "JSDOMBinding.h"
#include "JSNode.h"
#include "ScriptState.h"
#include "ShadowRoot.h"
namespace WebCore {
WEBCORE_EXPORT JSC::JSValue createWrapper(JSC::ExecState*, JSDOMGlobalObject*, Node*);
WEBCORE_EXPORT JSC::JSObject* getOutOfLineCachedWrapper(JSDOMGlobalObject*, Node*);
inline JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Node* node)
{
if (!node)
return JSC::jsNull();
if (LIKELY(globalObject->worldIsNormal())) {
if (auto* wrapper = node->wrapper())
return wrapper;
} else {
if (auto* wrapper = getOutOfLineCachedWrapper(globalObject, node))
return wrapper;
}
return createWrapper(exec, globalObject, node);
}
// In the C++ DOM, a node tree survives as long as there is a reference to its
// root. In the JavaScript DOM, a node tree survives as long as there is a
// reference to any node in the tree. To model the JavaScript DOM on top of
// the C++ DOM, we ensure that the root of every tree has a JavaScript wrapper.
void willCreatePossiblyOrphanedTreeByRemovalSlowCase(Node* root);
inline void willCreatePossiblyOrphanedTreeByRemoval(Node* root)
{
if (root->wrapper())
return;
if (!root->hasChildNodes())
return;
willCreatePossiblyOrphanedTreeByRemovalSlowCase(root);
}
inline void* root(Node* node)
{
if (node->inDocument())
return &node->document();
while (node->parentOrShadowHostNode())
node = node->parentOrShadowHostNode();
return node;
}
inline void* root(Node& node)
{
return root(&node);
}
ALWAYS_INLINE JSNode* jsNodeCast(JSC::JSValue value)
{
if (UNLIKELY(!value.isCell()))
return nullptr;
return value.asCell()->type() >= JSNodeType ? JSC::jsCast<JSNode*>(value) : nullptr;
}
} // namespace WebCore
#endif // JSDOMNodeCustom_h
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