LCOV - code coverage report
Current view: directory - content/xslt/src/xpath - txPredicateList.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 36 0 0.0 %
Date: 2012-06-02 Functions: 3 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is TransforMiiX XSLT processor code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * The MITRE Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1999
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Keith Visco <kvisco@ziplink.net> (Original Author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "txExpr.h"
      40                 : #include "txNodeSet.h"
      41                 : #include "txNodeSetContext.h"
      42                 : 
      43                 : /*
      44                 :  * Represents an ordered list of Predicates,
      45                 :  * for use with Step and Filter Expressions
      46                 :  */
      47                 : 
      48                 : nsresult
      49               0 : PredicateList::evaluatePredicates(txNodeSet* nodes,
      50                 :                                   txIMatchContext* aContext)
      51                 : {
      52               0 :     NS_ASSERTION(nodes, "called evaluatePredicates with NULL NodeSet");
      53               0 :     nsresult rv = NS_OK;
      54                 : 
      55               0 :     PRUint32 i, len = mPredicates.Length();
      56               0 :     for (i = 0; i < len && !nodes->isEmpty(); ++i) {
      57               0 :         txNodeSetContext predContext(nodes, aContext);
      58                 :         /*
      59                 :          * add nodes to newNodes that match the expression
      60                 :          * or, if the result is a number, add the node with the right
      61                 :          * position
      62                 :          */
      63               0 :         PRInt32 index = 0;
      64               0 :         while (predContext.hasNext()) {
      65               0 :             predContext.next();
      66               0 :             nsRefPtr<txAExprResult> exprResult;
      67               0 :             rv = mPredicates[i]->evaluate(&predContext,
      68               0 :                                           getter_AddRefs(exprResult));
      69               0 :             NS_ENSURE_SUCCESS(rv, rv);
      70                 : 
      71                 :             // handle default, [position() == numberValue()]
      72               0 :             if (exprResult->getResultType() == txAExprResult::NUMBER) {
      73               0 :                 if ((double)predContext.position() == exprResult->numberValue()) {
      74               0 :                     nodes->mark(index);
      75                 :                 }
      76                 :             }
      77               0 :             else if (exprResult->booleanValue()) {
      78               0 :                 nodes->mark(index);
      79                 :             }
      80               0 :             ++index;
      81                 :         }
      82                 :         // sweep the non-marked nodes
      83               0 :         nodes->sweep();
      84                 :     }
      85                 : 
      86               0 :     return NS_OK;
      87                 : }
      88                 : 
      89                 : bool
      90               0 : PredicateList::isSensitiveTo(Expr::ContextSensitivity aContext)
      91                 : {
      92                 :     // We're creating a new node/nodeset so we can ignore those bits.
      93                 :     Expr::ContextSensitivity context =
      94               0 :         aContext & ~(Expr::NODE_CONTEXT | Expr::NODESET_CONTEXT);
      95               0 :     if (context == Expr::NO_CONTEXT) {
      96               0 :         return false;
      97                 :     }
      98                 : 
      99               0 :     PRUint32 i, len = mPredicates.Length();
     100               0 :     for (i = 0; i < len; ++i) {
     101               0 :         if (mPredicates[i]->isSensitiveTo(context)) {
     102               0 :             return true;
     103                 :         }
     104                 :     }
     105                 : 
     106               0 :     return false;
     107                 : }
     108                 : 
     109                 : #ifdef TX_TO_STRING
     110               0 : void PredicateList::toString(nsAString& dest)
     111                 : {
     112               0 :     for (PRUint32 i = 0; i < mPredicates.Length(); ++i) {
     113               0 :         dest.Append(PRUnichar('['));
     114               0 :         mPredicates[i]->toString(dest);
     115               0 :         dest.Append(PRUnichar(']'));
     116                 :     }
     117               0 : }
     118                 : #endif

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