/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */


//
// Simplifies iteration over nginx lists.
//
//

#ifndef NGX_LIST_ITERATOR_H_
#define NGX_LIST_ITERATOR_H_

extern "C" {
#include <ngx_http.h>
}

#include "base/basictypes.h"

namespace net_instaweb {

class NgxListIterator {
 public:
  explicit NgxListIterator(ngx_list_part_t* part);

  // Return the next element of the list if there is one, NULL otherwise.
  ngx_table_elt_t* Next();

 private:
  ngx_list_part_t* part_;
  ngx_uint_t index_within_part_;

  DISALLOW_COPY_AND_ASSIGN(NgxListIterator);
};

}  // namespace net_instaweb

#endif  // NGX_LIST_ITERATOR_H_