LCOV - code coverage report
Current view: directory - content/xslt/src/xpath - txNumberExpr.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 49 0 0.0 %
Date: 2012-06-02 Functions: 6 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 <math.h>
      41                 : #include "txIXPathContext.h"
      42                 : 
      43                 : nsresult
      44               0 : txNumberExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
      45                 : {
      46               0 :     *aResult = nsnull;
      47                 : 
      48               0 :     nsRefPtr<txAExprResult> exprRes;
      49               0 :     nsresult rv = mRightExpr->evaluate(aContext, getter_AddRefs(exprRes));
      50               0 :     NS_ENSURE_SUCCESS(rv, rv);
      51                 : 
      52               0 :     double rightDbl = exprRes->numberValue();
      53                 : 
      54               0 :     rv = mLeftExpr->evaluate(aContext, getter_AddRefs(exprRes));
      55               0 :     NS_ENSURE_SUCCESS(rv, rv);
      56                 : 
      57               0 :     double leftDbl = exprRes->numberValue();
      58               0 :     double result = 0;
      59                 : 
      60               0 :     switch (mOp) {
      61                 :         case ADD:
      62               0 :             result = leftDbl + rightDbl;
      63               0 :             break;
      64                 : 
      65                 :         case SUBTRACT:
      66               0 :             result = leftDbl - rightDbl;
      67               0 :             break;
      68                 : 
      69                 :         case DIVIDE:
      70               0 :             if (rightDbl == 0) {
      71                 : #if defined(XP_WIN)
      72                 :                 /* XXX MSVC miscompiles such that (NaN == 0) */
      73                 :                 if (txDouble::isNaN(rightDbl))
      74                 :                     result = txDouble::NaN;
      75                 :                 else
      76                 : #endif
      77               0 :                 if (leftDbl == 0 || txDouble::isNaN(leftDbl))
      78               0 :                     result = txDouble::NaN;
      79               0 :                 else if (txDouble::isNeg(leftDbl) ^ txDouble::isNeg(rightDbl))
      80               0 :                     result = txDouble::NEGATIVE_INFINITY;
      81                 :                 else
      82               0 :                     result = txDouble::POSITIVE_INFINITY;
      83                 :             }
      84                 :             else
      85               0 :                 result = leftDbl / rightDbl;
      86               0 :             break;
      87                 : 
      88                 :         case MODULUS:
      89               0 :             if (rightDbl == 0) {
      90               0 :                 result = txDouble::NaN;
      91                 :             }
      92                 :             else {
      93                 : #if defined(XP_WIN)
      94                 :                 /* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. */
      95                 :                 if (!txDouble::isInfinite(leftDbl) && txDouble::isInfinite(rightDbl))
      96                 :                     result = leftDbl;
      97                 :                 else
      98                 : #endif
      99               0 :                 result = fmod(leftDbl, rightDbl);
     100                 :             }
     101               0 :             break;
     102                 : 
     103                 :         case MULTIPLY:
     104               0 :             result = leftDbl * rightDbl;
     105               0 :             break;
     106                 :     }
     107                 : 
     108               0 :     return aContext->recycler()->getNumberResult(result, aResult);
     109                 : } //-- evaluate
     110                 : 
     111               0 : TX_IMPL_EXPR_STUBS_2(txNumberExpr, NUMBER_RESULT, mLeftExpr, mRightExpr)
     112                 : 
     113                 : bool
     114               0 : txNumberExpr::isSensitiveTo(ContextSensitivity aContext)
     115                 : {
     116               0 :     return mLeftExpr->isSensitiveTo(aContext) ||
     117               0 :            mRightExpr->isSensitiveTo(aContext);
     118                 : }
     119                 : 
     120                 : #ifdef TX_TO_STRING
     121                 : void
     122               0 : txNumberExpr::toString(nsAString& str)
     123                 : {
     124               0 :     mLeftExpr->toString(str);
     125                 : 
     126               0 :     switch (mOp) {
     127                 :         case ADD:
     128               0 :             str.AppendLiteral(" + ");
     129               0 :             break;
     130                 :         case SUBTRACT:
     131               0 :             str.AppendLiteral(" - ");
     132               0 :             break;
     133                 :         case DIVIDE:
     134               0 :             str.AppendLiteral(" div ");
     135               0 :             break;
     136                 :         case MODULUS:
     137               0 :             str.AppendLiteral(" mod ");
     138               0 :             break;
     139                 :         case MULTIPLY:
     140               0 :             str.AppendLiteral(" * ");
     141               0 :             break;
     142                 :     }
     143                 : 
     144               0 :     mRightExpr->toString(str);
     145                 : 
     146               0 : }
     147                 : #endif

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