text: // Copyright 2014 MongoDB Inc.
  //
  // Licensed 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.
  
  #pragma once
  
  #include "driver/config/prelude.hpp"
  
  #include <iostream>
  #include <cstddef>
  #include <cstdint>
  #include <iterator>
  #include <type_traits>
  
  #include "bson/string_or_literal.hpp"
  #include "bson/document/element.hpp"
  
  namespace bson {
  namespace document {
  
  class LIBMONGOCXX_EXPORT view {
     public:
      class iterator : public std::iterator<std::forward_iterator_tag, element, std::ptrdiff_t,
                                            const element*, const element&> {
         public:
          iterator(const void* iter);
  
          iterator(bool is_end);
  
          const element& operator*() const;
          const element* operator->() const;
  
          iterator& operator++();
  
          bool operator==(const iterator& rhs) const;
  
          bool operator!=(const iterator& rhs) const;
  
         private:
          element iter;
          bool is_end;
      };
  
      iterator begin() const;
      iterator end() const;
  
      element operator[](const string_or_literal& key) const;
  
      view(const std::uint8_t* b, std::size_t l);
      view();
  
      const std::uint8_t* get_buf() const;
      std::size_t get_len() const;
  
      friend std::ostream& operator<<(std::ostream& out, const bson::document::view& doc);
  
     protected:
      const std::uint8_t* buf;
      std::size_t len;
  };
  
  }  // namespace document
  }  // namespace bson
  
  #include "driver/config/postlude.hpp"
  