/* 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_SET_CONTEXT
#define TX_XPATH_SET_CONTEXT

#include "txIXPathContext.h"
#include "txNodeSet.h"

class txNodeSetContext : public txIEvalContext {
 public:
  txNodeSetContext(txNodeSet* aContextNodeSet, txIMatchContext* aContext)
      : mContextSet(aContextNodeSet), mPosition(0), mInner(aContext) {}

  // Iteration over the given NodeSet
  bool hasNext() { return mPosition < size(); }
  void next() {
    NS_ASSERTION(mPosition < size(), "Out of bounds.");
    mPosition++;
  }
  void setPosition(uint32_t aPosition) {
    NS_ASSERTION(aPosition > 0 && aPosition <= size(), "Out of bounds.");
    mPosition = aPosition;
  }

  TX_DECL_EVAL_CONTEXT;

 protected:
  RefPtr<txNodeSet> mContextSet;
  uint32_t mPosition;
  txIMatchContext* mInner;
};

#endif  // TX_XPATH_SET_CONTEXT