/* * 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