forked from mirrors/gecko-dev
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "txExpr.h"
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#include "txExprResult.h"
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#include "txSingleNodeContext.h"
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txPredicatedNodeTest::txPredicatedNodeTest(txNodeTest* aNodeTest,
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Expr* aPredicate)
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: mNodeTest(aNodeTest), mPredicate(aPredicate) {
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NS_ASSERTION(!mPredicate->isSensitiveTo(Expr::NODESET_CONTEXT),
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"predicate must not be context-nodeset-sensitive");
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}
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nsresult txPredicatedNodeTest::matches(const txXPathNode& aNode,
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txIMatchContext* aContext,
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bool& aMatched) {
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nsresult rv = mNodeTest->matches(aNode, aContext, aMatched);
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NS_ENSURE_SUCCESS(rv, rv);
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if (!aMatched) {
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return NS_OK;
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}
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txSingleNodeContext context(aNode, aContext);
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RefPtr<txAExprResult> res;
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rv = mPredicate->evaluate(&context, getter_AddRefs(res));
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NS_ENSURE_SUCCESS(rv, rv);
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aMatched = res->booleanValue();
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return NS_OK;
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}
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double txPredicatedNodeTest::getDefaultPriority() { return 0.5; }
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bool txPredicatedNodeTest::isSensitiveTo(Expr::ContextSensitivity aContext) {
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return mNodeTest->isSensitiveTo(aContext) ||
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mPredicate->isSensitiveTo(aContext);
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}
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#ifdef TX_TO_STRING
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void txPredicatedNodeTest::toString(nsAString& aDest) {
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mNodeTest->toString(aDest);
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aDest.Append(char16_t('['));
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mPredicate->toString(aDest);
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aDest.Append(char16_t(']'));
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}
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#endif
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