LCOV - code coverage report
Current view: top level - dom/xslt/xpath - txNumberExpr.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 49 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 6 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "mozilla/FloatingPoint.h"
       7             : 
       8             : #include "txExpr.h"
       9             : #include <math.h>
      10             : #include "txIXPathContext.h"
      11             : 
      12             : nsresult
      13           0 : txNumberExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
      14             : {
      15           0 :     *aResult = nullptr;
      16             : 
      17           0 :     RefPtr<txAExprResult> exprRes;
      18           0 :     nsresult rv = mRightExpr->evaluate(aContext, getter_AddRefs(exprRes));
      19           0 :     NS_ENSURE_SUCCESS(rv, rv);
      20             : 
      21           0 :     double rightDbl = exprRes->numberValue();
      22             : 
      23           0 :     rv = mLeftExpr->evaluate(aContext, getter_AddRefs(exprRes));
      24           0 :     NS_ENSURE_SUCCESS(rv, rv);
      25             : 
      26           0 :     double leftDbl = exprRes->numberValue();
      27           0 :     double result = 0;
      28             : 
      29           0 :     switch (mOp) {
      30             :         case ADD:
      31           0 :             result = leftDbl + rightDbl;
      32           0 :             break;
      33             : 
      34             :         case SUBTRACT:
      35           0 :             result = leftDbl - rightDbl;
      36           0 :             break;
      37             : 
      38             :         case DIVIDE:
      39           0 :             if (rightDbl == 0) {
      40             : #if defined(XP_WIN)
      41             :                 /* XXX MSVC miscompiles such that (NaN == 0) */
      42             :                 if (mozilla::IsNaN(rightDbl))
      43             :                     result = mozilla::UnspecifiedNaN<double>();
      44             :                 else
      45             : #endif
      46           0 :                 if (leftDbl == 0 || mozilla::IsNaN(leftDbl))
      47           0 :                     result = mozilla::UnspecifiedNaN<double>();
      48           0 :                 else if (mozilla::IsNegative(leftDbl) != mozilla::IsNegative(rightDbl))
      49           0 :                     result = mozilla::NegativeInfinity<double>();
      50             :                 else
      51           0 :                     result = mozilla::PositiveInfinity<double>();
      52             :             }
      53             :             else
      54           0 :                 result = leftDbl / rightDbl;
      55           0 :             break;
      56             : 
      57             :         case MODULUS:
      58           0 :             if (rightDbl == 0) {
      59           0 :                 result = mozilla::UnspecifiedNaN<double>();
      60             :             }
      61             :             else {
      62             : #if defined(XP_WIN)
      63             :                 /* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. */
      64             :                 if (!mozilla::IsInfinite(leftDbl) && mozilla::IsInfinite(rightDbl))
      65             :                     result = leftDbl;
      66             :                 else
      67             : #endif
      68           0 :                 result = fmod(leftDbl, rightDbl);
      69             :             }
      70           0 :             break;
      71             : 
      72             :         case MULTIPLY:
      73           0 :             result = leftDbl * rightDbl;
      74           0 :             break;
      75             :     }
      76             : 
      77           0 :     return aContext->recycler()->getNumberResult(result, aResult);
      78             : } //-- evaluate
      79             : 
      80           0 : TX_IMPL_EXPR_STUBS_2(txNumberExpr, NUMBER_RESULT, mLeftExpr, mRightExpr)
      81             : 
      82             : bool
      83           0 : txNumberExpr::isSensitiveTo(ContextSensitivity aContext)
      84             : {
      85           0 :     return mLeftExpr->isSensitiveTo(aContext) ||
      86           0 :            mRightExpr->isSensitiveTo(aContext);
      87             : }
      88             : 
      89             : #ifdef TX_TO_STRING
      90             : void
      91           0 : txNumberExpr::toString(nsAString& str)
      92             : {
      93           0 :     mLeftExpr->toString(str);
      94             : 
      95           0 :     switch (mOp) {
      96             :         case ADD:
      97           0 :             str.AppendLiteral(" + ");
      98           0 :             break;
      99             :         case SUBTRACT:
     100           0 :             str.AppendLiteral(" - ");
     101           0 :             break;
     102             :         case DIVIDE:
     103           0 :             str.AppendLiteral(" div ");
     104           0 :             break;
     105             :         case MODULUS:
     106           0 :             str.AppendLiteral(" mod ");
     107           0 :             break;
     108             :         case MULTIPLY:
     109           0 :             str.AppendLiteral(" * ");
     110           0 :             break;
     111             :     }
     112             : 
     113           0 :     mRightExpr->toString(str);
     114             : 
     115           0 : }
     116             : #endif

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