LCOV - code coverage report
Current view: top level - dom/xslt/xpath - txRelationalExpr.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 97 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 7 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 "txExpr.h"
       7             : #include "txNodeSet.h"
       8             : #include "txIXPathContext.h"
       9             : #include "txXPathTreeWalker.h"
      10             : 
      11             : /**
      12             :  *  Compares the two ExprResults based on XPath 1.0 Recommendation (section 3.4)
      13             :  */
      14             : bool
      15           0 : RelationalExpr::compareResults(txIEvalContext* aContext, txAExprResult* aLeft,
      16             :                                txAExprResult* aRight)
      17             : {
      18           0 :     short ltype = aLeft->getResultType();
      19           0 :     short rtype = aRight->getResultType();
      20           0 :     nsresult rv = NS_OK;
      21             : 
      22             :     // Handle case for just Left NodeSet or Both NodeSets
      23           0 :     if (ltype == txAExprResult::NODESET) {
      24           0 :         if (rtype == txAExprResult::BOOLEAN) {
      25           0 :             BooleanResult leftBool(aLeft->booleanValue());
      26           0 :             return compareResults(aContext, &leftBool, aRight);
      27             :         }
      28             : 
      29           0 :         txNodeSet* nodeSet = static_cast<txNodeSet*>(aLeft);
      30           0 :         RefPtr<StringResult> strResult;
      31           0 :         rv = aContext->recycler()->getStringResult(getter_AddRefs(strResult));
      32           0 :         NS_ENSURE_SUCCESS(rv, false);
      33             : 
      34             :         int32_t i;
      35           0 :         for (i = 0; i < nodeSet->size(); ++i) {
      36           0 :             strResult->mValue.Truncate();
      37           0 :             txXPathNodeUtils::appendNodeValue(nodeSet->get(i),
      38           0 :                                               strResult->mValue);
      39           0 :             if (compareResults(aContext, strResult, aRight)) {
      40           0 :                 return true;
      41             :             }
      42             :         }
      43             : 
      44           0 :         return false;
      45             :     }
      46             : 
      47             :     // Handle case for Just Right NodeSet
      48           0 :     if (rtype == txAExprResult::NODESET) {
      49           0 :         if (ltype == txAExprResult::BOOLEAN) {
      50           0 :             BooleanResult rightBool(aRight->booleanValue());
      51           0 :             return compareResults(aContext, aLeft, &rightBool);
      52             :         }
      53             : 
      54           0 :         txNodeSet* nodeSet = static_cast<txNodeSet*>(aRight);
      55           0 :         RefPtr<StringResult> strResult;
      56           0 :         rv = aContext->recycler()->getStringResult(getter_AddRefs(strResult));
      57           0 :         NS_ENSURE_SUCCESS(rv, false);
      58             : 
      59             :         int32_t i;
      60           0 :         for (i = 0; i < nodeSet->size(); ++i) {
      61           0 :             strResult->mValue.Truncate();
      62           0 :             txXPathNodeUtils::appendNodeValue(nodeSet->get(i),
      63           0 :                                               strResult->mValue);
      64           0 :             if (compareResults(aContext, aLeft, strResult)) {
      65           0 :                 return true;
      66             :             }
      67             :         }
      68             : 
      69           0 :         return false;
      70             :     }
      71             : 
      72             :     // Neither is a NodeSet
      73           0 :     if (mOp == EQUAL || mOp == NOT_EQUAL) {
      74             :         bool result;
      75             :         const nsString *lString, *rString;
      76             : 
      77             :         // If either is a bool, compare as bools.
      78           0 :         if (ltype == txAExprResult::BOOLEAN ||
      79             :             rtype == txAExprResult::BOOLEAN) {
      80           0 :             result = aLeft->booleanValue() == aRight->booleanValue();
      81             :         }
      82             : 
      83             :         // If either is a number, compare as numbers.
      84           0 :         else if (ltype == txAExprResult::NUMBER ||
      85             :                  rtype == txAExprResult::NUMBER) {
      86           0 :             double lval = aLeft->numberValue();
      87           0 :             double rval = aRight->numberValue();
      88           0 :             result = (lval == rval);
      89             :         }
      90             : 
      91             :         // Otherwise compare as strings. Try to use the stringobject in
      92             :         // StringResult if possible since that is a common case.
      93           0 :         else if ((lString = aLeft->stringValuePointer())) {
      94           0 :             if ((rString = aRight->stringValuePointer())) {
      95           0 :                 result = lString->Equals(*rString);
      96             :             }
      97             :             else {
      98           0 :                 nsAutoString rStr;
      99           0 :                 aRight->stringValue(rStr);
     100           0 :                 result = lString->Equals(rStr);
     101             :             }
     102             :         }
     103           0 :         else if ((rString = aRight->stringValuePointer())) {
     104           0 :             nsAutoString lStr;
     105           0 :             aLeft->stringValue(lStr);
     106           0 :             result = rString->Equals(lStr);
     107             :         }
     108             :         else {
     109           0 :             nsAutoString lStr, rStr;
     110           0 :             aLeft->stringValue(lStr);
     111           0 :             aRight->stringValue(rStr);
     112           0 :             result = lStr.Equals(rStr);
     113             :         }
     114             : 
     115           0 :         return mOp == EQUAL ? result : !result;
     116             :     }
     117             : 
     118           0 :     double leftDbl = aLeft->numberValue();
     119           0 :     double rightDbl = aRight->numberValue();
     120           0 :     switch (mOp) {
     121             :         case LESS_THAN:
     122             :         {
     123           0 :             return (leftDbl < rightDbl);
     124             :         }
     125             :         case LESS_OR_EQUAL:
     126             :         {
     127           0 :             return (leftDbl <= rightDbl);
     128             :         }
     129             :         case GREATER_THAN:
     130             :         {
     131           0 :             return (leftDbl > rightDbl);
     132             :         }
     133             :         case GREATER_OR_EQUAL:
     134             :         {
     135           0 :             return (leftDbl >= rightDbl);
     136             :         }
     137             :         default:
     138             :         {
     139           0 :             NS_NOTREACHED("We should have caught all cases");
     140             :         }
     141             :     }
     142             : 
     143           0 :     return false;
     144             : }
     145             : 
     146             : nsresult
     147           0 : RelationalExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
     148             : {
     149           0 :     *aResult = nullptr;
     150           0 :     RefPtr<txAExprResult> lResult;
     151           0 :     nsresult rv = mLeftExpr->evaluate(aContext, getter_AddRefs(lResult));
     152           0 :     NS_ENSURE_SUCCESS(rv, rv);
     153             : 
     154           0 :     RefPtr<txAExprResult> rResult;
     155           0 :     rv = mRightExpr->evaluate(aContext, getter_AddRefs(rResult));
     156           0 :     NS_ENSURE_SUCCESS(rv, rv);
     157             : 
     158           0 :     aContext->recycler()->
     159           0 :         getBoolResult(compareResults(aContext, lResult, rResult), aResult);
     160             : 
     161           0 :     return NS_OK;
     162             : }
     163             : 
     164           0 : TX_IMPL_EXPR_STUBS_2(RelationalExpr, BOOLEAN_RESULT, mLeftExpr, mRightExpr)
     165             : 
     166             : bool
     167           0 : RelationalExpr::isSensitiveTo(ContextSensitivity aContext)
     168             : {
     169           0 :     return mLeftExpr->isSensitiveTo(aContext) ||
     170           0 :            mRightExpr->isSensitiveTo(aContext);
     171             : }
     172             : 
     173             : #ifdef TX_TO_STRING
     174             : void
     175           0 : RelationalExpr::toString(nsAString& str)
     176             : {
     177           0 :     mLeftExpr->toString(str);
     178             : 
     179           0 :     switch (mOp) {
     180             :         case NOT_EQUAL:
     181           0 :             str.AppendLiteral("!=");
     182           0 :             break;
     183             :         case LESS_THAN:
     184           0 :             str.Append(char16_t('<'));
     185           0 :             break;
     186             :         case LESS_OR_EQUAL:
     187           0 :             str.AppendLiteral("<=");
     188           0 :             break;
     189             :         case GREATER_THAN :
     190           0 :             str.Append(char16_t('>'));
     191           0 :             break;
     192             :         case GREATER_OR_EQUAL:
     193           0 :             str.AppendLiteral(">=");
     194           0 :             break;
     195             :         default:
     196           0 :             str.Append(char16_t('='));
     197           0 :             break;
     198             :     }
     199             : 
     200           0 :     mRightExpr->toString(str);
     201           0 : }
     202             : #endif

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