/* * Copyright 2005 Frerich Raabe <raabe@kde.org> * Copyright (C) 2006 Apple Computer, Inc. * * 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 THE AUTHOR ``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 THE AUTHOR 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 XPathStep_H #define XPathStep_H #if XPATH_SUPPORT #include "Node.h" #include "XPathExpressionNode.h" #include "XPathUtil.h" namespace WebCore { namespace XPath { class Predicate; class Step : public ParseNode, Noncopyable { public: enum Axis { AncestorAxis, AncestorOrSelfAxis, AttributeAxis, ChildAxis, DescendantAxis, DescendantOrSelfAxis, FollowingAxis, FollowingSiblingAxis, NamespaceAxis, ParentAxis, PrecedingAxis, PrecedingSiblingAxis, SelfAxis }; Step(Axis, const String& nodeTest, const Vector<Predicate*>& predicates = Vector<Predicate*>()); ~Step(); NodeVector evaluate(Node* context) const; void optimize(); private: NodeVector nodesInAxis(Node* context) const; NodeVector nodeTestMatches(const NodeVector& nodes) const; String namespaceFromNodetest(const String& nodeTest) const; Node::NodeType primaryNodeType(Axis) const; Axis m_axis; String m_nodeTest; String m_namespaceURI; Vector<Predicate*> m_predicates; }; } } #endif // XPATH_SUPPORT #endif // XPath_Step_H