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133 lines
4.1 KiB
C++
133 lines
4.1 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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//- Constructors -/
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/**
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* Creates a new BasicNodeExpr of the given type
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**/
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BasicNodeExpr::BasicNodeExpr(NodeExpr::NodeExprType nodeExprType) {
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this->type = nodeExprType;
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nodeNameSet = MB_FALSE;
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} //-- BasicNodeExpr
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//------------------/
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//- Public Methods -/
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//------------------/
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void BasicNodeExpr::setNodeName(const String& name) {
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this->nodeName = name;
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nodeNameSet = MB_TRUE;
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}
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//-----------------------------/
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//- Methods from NodeExpr.cpp -/
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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* BasicNodeExpr::evaluate(Node* context, ContextState* cs) {
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NodeSet* nodeSet = new NodeSet();
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if (!context)
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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 Expr based on the given Node,
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* context Node, and ContextState.
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**/
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double BasicNodeExpr::getDefaultPriority(Node* node, Node* context,
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ContextState* cs) {
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if (nodeNameSet)
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return 0;
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return -0.5;
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} //-- getDefaultPriority
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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 BasicNodeExpr::matches(Node* node, Node* context, ContextState* cs) {
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if (!node)
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return MB_FALSE;
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switch (type) {
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case NodeExpr::COMMENT_EXPR:
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return (MBool)(node->getNodeType() == Node::COMMENT_NODE);
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case NodeExpr::PI_EXPR :
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return (MBool)(node->getNodeType() == Node::PROCESSING_INSTRUCTION_NODE &&
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!nodeNameSet || nodeName.isEqual(node->getNodeName()));
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default: //-- node()
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if (node->getNodeType() == Node::TEXT_NODE ||
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node->getNodeType() == Node::CDATA_SECTION_NODE)
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return !cs->isStripSpaceAllowed(node);
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return MB_TRUE;
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}
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return MB_TRUE;
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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 BasicNodeExpr::toString(String& dest) {
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switch (type) {
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case NodeExpr::COMMENT_EXPR:
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dest.append("comment()");
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break;
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case NodeExpr::PI_EXPR :
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dest.append("processing-instruction(");
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if (nodeNameSet) {
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dest.append('\'');
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dest.append(nodeName);
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dest.append('\'');
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}
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dest.append(')');
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break;
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default: //-- node()
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dest.append("node()");
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break;
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}
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} //-- toString
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