/* -*- 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/. */

#ifndef __TX_XPATH_SINGLENODE_CONTEXT
#define __TX_XPATH_SINGLENODE_CONTEXT

#include "mozilla/Attributes.h"
#include "txIXPathContext.h"

class txSingleNodeContext : public txIEvalContext {
 public:
  txSingleNodeContext(const txXPathNode& aContextNode,
                      txIMatchContext* aContext)
      : mNode(aContextNode), mInner(aContext) {
    NS_ASSERTION(aContext, "txIMatchContext must be given");
  }

  nsresult getVariable(int32_t aNamespace, nsAtom* aLName,
                       txAExprResult*& aResult) override {
    NS_ASSERTION(mInner, "mInner is null!!!");
    return mInner->getVariable(aNamespace, aLName, aResult);
  }

  nsresult isStripSpaceAllowed(const txXPathNode& aNode,
                               bool& aAllowed) override {
    NS_ASSERTION(mInner, "mInner is null!!!");
    return mInner->isStripSpaceAllowed(aNode, aAllowed);
  }

  void* getPrivateContext() override {
    NS_ASSERTION(mInner, "mInner is null!!!");
    return mInner->getPrivateContext();
  }

  txResultRecycler* recycler() override {
    NS_ASSERTION(mInner, "mInner is null!!!");
    return mInner->recycler();
  }

  void receiveError(const nsAString& aMsg, nsresult aRes) override {
    NS_ASSERTION(mInner, "mInner is null!!!");
#ifdef DEBUG
    nsAutoString error(u"forwarded error: "_ns);
    error.Append(aMsg);
    mInner->receiveError(error, aRes);
#else
    mInner->receiveError(aMsg, aRes);
#endif
  }

  const txXPathNode& getContextNode() override { return mNode; }

  uint32_t size() override { return 1; }

  uint32_t position() override { return 1; }

 private:
  const txXPathNode& mNode;
  txIMatchContext* mInner;
};

#endif  // __TX_XPATH_SINGLENODE_CONTEXT