/* -*- 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 "txExpr.h"
#include "nsAtom.h"
#include "nsGkAtoms.h"
#include "txXPathTreeWalker.h"
#include "txIXPathContext.h"

txNameTest::txNameTest(nsAtom* aPrefix, nsAtom* aLocalName, int32_t aNSID,
                       uint16_t aNodeType)
    : mPrefix(aPrefix),
      mLocalName(aLocalName),
      mNamespace(aNSID),
      mNodeType(aNodeType) {
  if (aPrefix == nsGkAtoms::_empty) mPrefix = nullptr;
  NS_ASSERTION(aLocalName, "txNameTest without a local name?");
  NS_ASSERTION(aNodeType == txXPathNodeType::DOCUMENT_NODE ||
                   aNodeType == txXPathNodeType::ELEMENT_NODE ||
                   aNodeType == txXPathNodeType::ATTRIBUTE_NODE,
               "Go fix txNameTest::matches");
}

nsresult txNameTest::matches(const txXPathNode& aNode,
                             txIMatchContext* aContext, bool& aMatched) {
  if ((mNodeType == txXPathNodeType::ELEMENT_NODE &&
       !txXPathNodeUtils::isElement(aNode)) ||
      (mNodeType == txXPathNodeType::ATTRIBUTE_NODE &&
       !txXPathNodeUtils::isAttribute(aNode)) ||
      (mNodeType == txXPathNodeType::DOCUMENT_NODE &&
       !txXPathNodeUtils::isRoot(aNode))) {
    aMatched = false;
    return NS_OK;
  }

  // Totally wild?
  if (mLocalName == nsGkAtoms::_asterisk && !mPrefix) {
    aMatched = true;
    return NS_OK;
  }

  // Compare namespaces
  if (mNamespace != txXPathNodeUtils::getNamespaceID(aNode) &&
      !(mNamespace == kNameSpaceID_None &&
        txXPathNodeUtils::isHTMLElementInHTMLDocument(aNode))) {
    aMatched = false;
    return NS_OK;
  }

  // Name wild?
  if (mLocalName == nsGkAtoms::_asterisk) {
    aMatched = true;
    return NS_OK;
  }

  // Compare local-names
  aMatched = txXPathNodeUtils::localNameEquals(aNode, mLocalName);
  return NS_OK;
}

/*
 * Returns the default priority of this txNodeTest
 */
double txNameTest::getDefaultPriority() {
  if (mLocalName == nsGkAtoms::_asterisk) {
    if (!mPrefix) return -0.5;
    return -0.25;
  }
  return 0;
}

txNodeTest::NodeTestType txNameTest::getType() { return NAME_TEST; }

bool txNameTest::isSensitiveTo(Expr::ContextSensitivity aContext) {
  return !!(aContext & Expr::NODE_CONTEXT);
}

#ifdef TX_TO_STRING
void txNameTest::toString(nsAString& aDest) {
  if (mPrefix) {
    nsAutoString prefix;
    mPrefix->ToString(prefix);
    aDest.Append(prefix);
    aDest.Append(char16_t(':'));
  }
  nsAutoString localName;
  mLocalName->ToString(localName);
  aDest.Append(localName);
}
#endif