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 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #include "txExpr.h"

 #include "txExprResult.h"

 #include "txSingleNodeContext.h"

 txPredicatedNodeTest::txPredicatedNodeTest(txNodeTest* aNodeTest,

                                            Expr* aPredicate)

     : mNodeTest(aNodeTest),

       mPredicate(aPredicate)

 {

     NS_ASSERTION(!mPredicate->isSensitiveTo(Expr::NODESET_CONTEXT),

                  "predicate must not be context-nodeset-sensitive");

 }

 bool

 txPredicatedNodeTest::matches(const txXPathNode& aNode,

                               txIMatchContext* aContext)

 {

     if (!mNodeTest->matches(aNode, aContext)) {

         return false;

     }

     txSingleNodeContext context(aNode, aContext);

     nsRefPtr<txAExprResult> res;

     nsresult rv = mPredicate->evaluate(&context, getter_AddRefs(res));

     NS_ENSURE_SUCCESS(rv, false);

     return res->booleanValue();

 }

 double

 txPredicatedNodeTest::getDefaultPriority()

 {

     return 0.5;

 }

 bool

 txPredicatedNodeTest::isSensitiveTo(Expr::ContextSensitivity aContext)

 {

     return mNodeTest->isSensitiveTo(aContext) ||

            mPredicate->isSensitiveTo(aContext);

 }

 #ifdef TX_TO_STRING

 void

 txPredicatedNodeTest::toString(nsAString& aDest)

 {

     mNodeTest->toString(aDest);

     aDest.Append(char16_t('['));

     mPredicate->toString(aDest);

     aDest.Append(char16_t(']'));

 }

 #endif