MongoDB C++ Driver  mongocxx-3.10.2
sub_array.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 <bsoncxx/builder/basic/sub_array-fwd.hpp>
18 
19 #include <bsoncxx/builder/basic/helpers.hpp>
20 #include <bsoncxx/builder/concatenate.hpp>
21 #include <bsoncxx/builder/core.hpp>
22 
23 #include <bsoncxx/config/prelude.hpp>
24 
25 namespace bsoncxx {
26 namespace v_noabi {
27 namespace builder {
28 namespace basic {
29 
30 namespace impl {
31 
32 template <typename T>
33 void value_append(core* core, T&& t);
34 
35 } // namespace impl
36 
41 class sub_array {
42  public:
46  BSONCXX_INLINE sub_array(core* core) : _core(core) {}
47 
51  template <typename Arg, typename... Args>
52  BSONCXX_INLINE void append(Arg&& a, Args&&... args) {
53  append_(std::forward<Arg>(a));
54  append(std::forward<Args>(args)...);
55  }
56 
60  BSONCXX_INLINE
61  void append() {}
62 
63  private:
64  //
65  // Appends a BSON value.
66  //
67  template <typename T>
68  BSONCXX_INLINE void append_(T&& t) {
69  impl::value_append(_core, std::forward<T>(t));
70  }
71 
72  //
73  // Concatenates another bson array directly.
74  //
75  BSONCXX_INLINE
76  void append_(concatenate_array array) {
77  _core->concatenate(array.view());
78  }
79 
80  core* _core;
81 };
82 
83 } // namespace basic
84 } // namespace builder
85 } // namespace v_noabi
86 } // namespace bsoncxx
87 
88 #include <bsoncxx/config/postlude.hpp>
A JSON-like builder for creating arrays.
Definition: list.hpp:180
An internal class of builder::basic.
Definition: sub_array.hpp:41
void append()
Inductive base-case for the variadic append(...)
Definition: sub_array.hpp:61
sub_array(core *core)
Default constructor.
Definition: sub_array.hpp:46
void append(Arg &&a, Args &&... args)
Appends multiple BSON values.
Definition: sub_array.hpp:52
A low-level interface for constructing BSON documents and arrays.
Definition: core.hpp:45
core & concatenate(const bsoncxx::v_noabi::document::view &view)
Appends the keys from a BSON document into this BSON datum.
bson_value::view view()
Provides a view of the underlying BSON value.
Definition: list.hpp:103
The top-level namespace for bsoncxx library entities.
Definition: element-fwd.hpp:19
Container to concatenate an array.
Definition: concatenate.hpp:64