MongoDB C++ Driver  mongocxx-3.0.3
view.hpp
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2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
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12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #pragma once
16 
17 #include <cstddef>
18 #include <cstdint>
19 #include <iterator>
20 
21 #include <bsoncxx/document/view.hpp>
22 #include <bsoncxx/array/element.hpp>
23 
24 #include <bsoncxx/config/prelude.hpp>
25 
26 namespace bsoncxx {
27 BSONCXX_INLINE_NAMESPACE_BEGIN
28 namespace array {
29 
33 class BSONCXX_API view {
34  public:
35  class BSONCXX_API const_iterator;
36  using iterator = const_iterator;
37 
41  const_iterator cbegin() const;
42 
46  const_iterator cend() const;
47 
51  const_iterator begin() const;
52 
56  const_iterator end() const;
57 
68  const_iterator find(std::uint32_t i) const;
69 
80  element operator[](std::uint32_t i) const;
81 
86  view();
87 
97  view(const std::uint8_t* data, std::size_t length);
98 
104  const std::uint8_t* data() const;
105 
114  std::size_t length() const;
115 
122  bool empty() const;
123 
124  operator document::view() const;
125 
133  friend BSONCXX_API bool BSONCXX_CALL operator==(view, view);
134  friend BSONCXX_API bool BSONCXX_CALL operator!=(view, view);
138 
139  private:
140  document::view _view;
141 };
142 
149 class BSONCXX_API view::const_iterator
150  : public std::iterator<std::forward_iterator_tag, element, std::ptrdiff_t, const element*,
151  const element&> {
152  public:
153  const_iterator();
154  explicit const_iterator(const element& element);
155 
156  reference operator*();
157  pointer operator->();
158 
159  const_iterator& operator++();
160  const_iterator operator++(int);
161 
169  friend BSONCXX_API bool BSONCXX_CALL operator==(const const_iterator&, const const_iterator&);
170  friend BSONCXX_API bool BSONCXX_CALL operator!=(const const_iterator&, const const_iterator&);
174 
175  private:
176  element _element;
177 };
178 
179 } // namespace array
180 BSONCXX_INLINE_NAMESPACE_END
181 } // namespace bsoncxx
182 
183 #include <bsoncxx/config/postlude.hpp>
A read-only, non-owning view of a BSON document.
Definition: view.hpp:33
A const iterator over the contents of an array view.
Definition: view.hpp:149
A read-only, non-owning view of a BSON document.
Definition: view.hpp:33
A variant view type that accesses values in serialized BSON arrays.
Definition: element.hpp:36
Definition: element.hpp:24