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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #include "txExpr.h" |
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7 #include "txExprResult.h" |
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8 #include "txSingleNodeContext.h" |
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9 |
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10 txPredicatedNodeTest::txPredicatedNodeTest(txNodeTest* aNodeTest, |
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11 Expr* aPredicate) |
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12 : mNodeTest(aNodeTest), |
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13 mPredicate(aPredicate) |
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14 { |
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15 NS_ASSERTION(!mPredicate->isSensitiveTo(Expr::NODESET_CONTEXT), |
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16 "predicate must not be context-nodeset-sensitive"); |
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17 } |
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18 |
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19 bool |
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20 txPredicatedNodeTest::matches(const txXPathNode& aNode, |
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21 txIMatchContext* aContext) |
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22 { |
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23 if (!mNodeTest->matches(aNode, aContext)) { |
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24 return false; |
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25 } |
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26 |
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27 txSingleNodeContext context(aNode, aContext); |
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28 nsRefPtr<txAExprResult> res; |
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29 nsresult rv = mPredicate->evaluate(&context, getter_AddRefs(res)); |
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30 NS_ENSURE_SUCCESS(rv, false); |
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31 |
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32 return res->booleanValue(); |
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33 } |
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34 |
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35 double |
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36 txPredicatedNodeTest::getDefaultPriority() |
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37 { |
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38 return 0.5; |
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39 } |
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40 |
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41 bool |
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42 txPredicatedNodeTest::isSensitiveTo(Expr::ContextSensitivity aContext) |
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43 { |
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44 return mNodeTest->isSensitiveTo(aContext) || |
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45 mPredicate->isSensitiveTo(aContext); |
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46 } |
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47 |
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48 #ifdef TX_TO_STRING |
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49 void |
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50 txPredicatedNodeTest::toString(nsAString& aDest) |
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51 { |
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52 mNodeTest->toString(aDest); |
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53 aDest.Append(char16_t('[')); |
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54 mPredicate->toString(aDest); |
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55 aDest.Append(char16_t(']')); |
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56 } |
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57 #endif |