txNamedAttributeStep.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* 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 "nsAtom.h"

#include "txIXPathContext.h"

#include "txNodeSet.h"

#include "txExpr.h"

#include "txXPathTreeWalker.h"

txNamedAttributeStep::txNamedAttributeStep(int32_t aNsID, nsAtom* aPrefix,

                                           nsAtom* aLocalName)

    : mNamespace(aNsID), mPrefix(aPrefix), mLocalName(aLocalName) {}

nsresult txNamedAttributeStep::evaluate(txIEvalContext* aContext,

                                        txAExprResult** aResult) {

  *aResult = nullptr;

  RefPtr<txNodeSet> nodes;

  nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes));

  NS_ENSURE_SUCCESS(rv, rv);

  txXPathTreeWalker walker(aContext->getContextNode());

  if (walker.moveToNamedAttribute(mLocalName, mNamespace)) {

    rv = nodes->append(walker.getCurrentPosition());

    NS_ENSURE_SUCCESS(rv, rv);

  NS_ADDREF(*aResult = nodes);

  return NS_OK;

TX_IMPL_EXPR_STUBS_0(txNamedAttributeStep, NODESET_RESULT)

bool txNamedAttributeStep::isSensitiveTo(ContextSensitivity aContext) {

  return !!(aContext & NODE_CONTEXT);

#ifdef TX_TO_STRING

void txNamedAttributeStep::toString(nsAString& aDest) {

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

  if (mPrefix) {

    nsAutoString prefix;

    mPrefix->ToString(prefix);

    aDest.Append(prefix);

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

  nsAutoString localName;

  mLocalName->ToString(localName);

  aDest.Append(localName);

#endif