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lightning-sunbird  0.9+nobinonly
txNodeTypeTest.cpp
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is TransforMiiX XSLT processor code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * The MITRE Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1999
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Keith Visco <kvisco@ziplink.net> (Original Author)
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "Expr.h"
00040 #include "nsIAtom.h"
00041 #include "txIXPathContext.h"
00042 #include "txXPathTreeWalker.h"
00043 
00044 /*
00045  * Creates a new txNodeTypeTest of the given type
00046  */
00047 txNodeTypeTest::txNodeTypeTest(NodeType aNodeType)
00048     : mNodeType(aNodeType)
00049 {
00050 }
00051 
00052 txNodeTypeTest::~txNodeTypeTest()
00053 {
00054 }
00055 
00056 void txNodeTypeTest::setNodeName(const nsAString& aName)
00057 {
00058     mNodeName = do_GetAtom(aName);
00059 }
00060 
00061 PRBool txNodeTypeTest::matches(const txXPathNode& aNode,
00062                                txIMatchContext* aContext)
00063 {
00064     switch (mNodeType) {
00065         case COMMENT_TYPE:
00066         {
00067             return txXPathNodeUtils::isComment(aNode);
00068         }
00069         case TEXT_TYPE:
00070         {
00071             return txXPathNodeUtils::isText(aNode) &&
00072                    !aContext->isStripSpaceAllowed(aNode);
00073         }
00074         case PI_TYPE:
00075         {
00076             return txXPathNodeUtils::isProcessingInstruction(aNode) &&
00077                    (!mNodeName ||
00078                     txXPathNodeUtils::localNameEquals(aNode, mNodeName));
00079         }
00080         case NODE_TYPE:
00081         {
00082             return !txXPathNodeUtils::isText(aNode) ||
00083                    !aContext->isStripSpaceAllowed(aNode);
00084         }
00085     }
00086     return PR_TRUE;
00087 }
00088 
00089 /*
00090  * Returns the default priority of this txNodeTest
00091  */
00092 double txNodeTypeTest::getDefaultPriority()
00093 {
00094     return mNodeName ? 0 : -0.5;
00095 }
00096 
00097 #ifdef TX_TO_STRING
00098 void
00099 txNodeTypeTest::toString(nsAString& aDest)
00100 {
00101     switch (mNodeType) {
00102         case COMMENT_TYPE:
00103             aDest.Append(NS_LITERAL_STRING("comment()"));
00104             break;
00105         case TEXT_TYPE:
00106             aDest.Append(NS_LITERAL_STRING("text()"));
00107             break;
00108         case PI_TYPE:
00109             aDest.AppendLiteral("processing-instruction(");
00110             if (mNodeName) {
00111                 nsAutoString str;
00112                 mNodeName->ToString(str);
00113                 aDest.Append(PRUnichar('\''));
00114                 aDest.Append(str);
00115                 aDest.Append(PRUnichar('\''));
00116             }
00117             aDest.Append(PRUnichar(')'));
00118             break;
00119         case NODE_TYPE:
00120             aDest.Append(NS_LITERAL_STRING("node()"));
00121             break;
00122     }
00123 }
00124 #endif