michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsIAtom.h"
michael@0: #include "txIXPathContext.h"
michael@0: #include "txNodeSet.h"
michael@0: #include "txExpr.h"
michael@0: #include "txXPathTreeWalker.h"
michael@0: 
michael@0: txNamedAttributeStep::txNamedAttributeStep(int32_t aNsID,
michael@0:                                            nsIAtom* aPrefix,
michael@0:                                            nsIAtom* aLocalName)
michael@0:     : mNamespace(aNsID),
michael@0:       mPrefix(aPrefix),
michael@0:       mLocalName(aLocalName)
michael@0: {
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: txNamedAttributeStep::evaluate(txIEvalContext* aContext,
michael@0:                                txAExprResult** aResult)
michael@0: {
michael@0:     *aResult = nullptr;
michael@0: 
michael@0:     nsRefPtr<txNodeSet> nodes;
michael@0:     nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes));
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:     txXPathTreeWalker walker(aContext->getContextNode());
michael@0:     if (walker.moveToNamedAttribute(mLocalName, mNamespace)) {
michael@0:         rv = nodes->append(walker.getCurrentPosition());
michael@0:         NS_ENSURE_SUCCESS(rv, rv);
michael@0:     }
michael@0:     NS_ADDREF(*aResult = nodes);
michael@0: 
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: TX_IMPL_EXPR_STUBS_0(txNamedAttributeStep, NODESET_RESULT)
michael@0: 
michael@0: bool
michael@0: txNamedAttributeStep::isSensitiveTo(ContextSensitivity aContext)
michael@0: {
michael@0:     return !!(aContext & NODE_CONTEXT);
michael@0: }
michael@0: 
michael@0: #ifdef TX_TO_STRING
michael@0: void
michael@0: txNamedAttributeStep::toString(nsAString& aDest)
michael@0: {
michael@0:     aDest.Append(char16_t('@'));
michael@0:     if (mPrefix) {
michael@0:         nsAutoString prefix;
michael@0:         mPrefix->ToString(prefix);
michael@0:         aDest.Append(prefix);
michael@0:         aDest.Append(char16_t(':'));
michael@0:     }
michael@0:     nsAutoString localName;
michael@0:     mLocalName->ToString(localName);
michael@0:     aDest.Append(localName);
michael@0: }
michael@0: #endif