5c701fdeff
b=84677 r=Pike sr=shaver git-svn-id: svn://10.0.0.236/trunk@101359 18797224-902f-48f8-a5cc-f745e15eee43
150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is TransforMiiX XSLT processor.
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*
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* The Initial Developer of the Original Code is The MITRE Corporation.
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* Portions created by MITRE are Copyright (C) 1999 The MITRE Corporation.
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*
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* Portions created by Keith Visco as a Non MITRE employee,
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* (C) 1999 Keith Visco. All Rights Reserved.
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*
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* Contributor(s):
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* Keith Visco, kvisco@ziplink.net
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* -- original author.
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*
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*/
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#include "Expr.h"
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#include "XMLDOMUtils.h"
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/*
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This class represents a ElementExpr as defined by XPath 1.0
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proposed recommendation
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*/
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const String ElementExpr::WILD_CARD = "*";
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//- Constructors -/
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ElementExpr::ElementExpr(String& name)
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{
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int idx = name.indexOf(':');
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if (idx >= 0)
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name.subString(0, idx, prefix);
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else
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idx = -1;
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name.subString(idx+1, this->name);
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//-- set flags
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isNameWild = this->name.isEqual(WILD_CARD);
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isNamespaceWild = (isNameWild && (prefix.length() == 0));
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} //-- ElementExpr
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//------------------/
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//- Public Methods -/
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//------------------/
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/**
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* Evaluates this Expr based on the given context node and processor state
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* @param context the context node for evaluation of this Expr
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* @param ps the ContextState containing the stack information needed
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* for evaluation
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* @return the result of the evaluation
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**/
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ExprResult* ElementExpr::evaluate(Node* context, ContextState* cs) {
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NodeSet* nodeSet = new NodeSet();
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if ( !context ) return nodeSet;
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Node* node = context->getFirstChild();
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while (node) {
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if (matches(node, context, cs))
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nodeSet->add(node);
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node = node->getNextSibling();
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}
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return nodeSet;
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} //-- evaluate
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/**
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* Returns the default priority of this Pattern based on the given Node,
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* context Node, and ContextState.
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**/
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double ElementExpr::getDefaultPriority(Node* node, Node* context, ContextState* cs) {
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if (!isNameWild)
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return 0;
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if (!isNamespaceWild)
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return -0.25;
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return -0.5;
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} //-- getDefaultPriority
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//-----------------------------/
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//- Methods from NodeExpr.cpp -/
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//-----------------------------/
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/**
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* Determines whether this NodeExpr matches the given node within
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* the given context
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**/
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MBool ElementExpr::matches(Node* node, Node* context, ContextState* cs) {
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if ((!node) || (node->getNodeType() != Node::ELEMENT_NODE ))
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return MB_FALSE;
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if (isNamespaceWild && isNameWild) return MB_TRUE;
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const String nodeName = node->getNodeName();
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int idx = nodeName.indexOf(':');
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if (!isNamespaceWild) {
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//-- compare namespaces
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String nsURI;
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// use context to get namespace for testing against
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if (prefix.length())
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cs->getNameSpaceURIFromPrefix(prefix, nsURI);
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String nsURI2;
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String prefix2;
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if (idx > 0) nodeName.subString(0, idx, prefix2);
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// use source tree to aquire namespace for node
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XMLDOMUtils::getNameSpace(prefix2, (Element*) node, nsURI2);
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if (!nsURI.isEqual(nsURI2)) return MB_FALSE;
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}
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if (this->isNameWild) return MB_TRUE;
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//-- compare local names
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if (idx < 0) return nodeName.isEqual(this->name);
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else {
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String local;
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nodeName.subString(idx+1, local);
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return local.isEqual(this->name);
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}
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} //-- matches
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/**
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* Returns the String representation of this NodeExpr.
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* @param dest the String to use when creating the String
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* representation. The String representation will be appended to
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* any data in the destination String, to allow cascading calls to
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* other #toString() methods for Expressions.
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* @return the String representation of this NodeExpr.
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**/
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void ElementExpr::toString(String& dest) {
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dest.append(this->name);
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} //-- toString
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