/* -*- 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");

}

nsresult

txPredicatedNodeTest::matches(const txXPathNode& aNode,

                              txIMatchContext* aContext,

                              bool& aMatched)

{

    nsresult rv = mNodeTest->matches(aNode, aContext, aMatched);

    NS_ENSURE_SUCCESS(rv, rv);

    if (!aMatched) {

        return NS_OK;

    }

    txSingleNodeContext context(aNode, aContext);

    RefPtr<txAExprResult> res;

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

    NS_ENSURE_SUCCESS(rv, rv);

    aMatched = res->booleanValue();

    return NS_OK;

}

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