MongoDB C++ Driver mongocxx-4.0.0
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sub_array.hpp
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1// Copyright 2009-present MongoDB, Inc.
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,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#pragma once
16
18
22
24
25namespace bsoncxx {
26namespace v_noabi {
27namespace builder {
28namespace basic {
29
30namespace impl {
31
32template <typename T>
33void value_append(core* core, T&& t);
34
35} // namespace impl
36
41class sub_array {
42 public:
46 sub_array(core* core) : _core(core) {}
47
51 template <typename Arg, typename... Args>
52 void append(Arg&& a, Args&&... args) {
53 append_(std::forward<Arg>(a));
54 append(std::forward<Args>(args)...);
55 }
56
60 void append() {}
61
62 private:
63 //
64 // Appends a BSON value.
65 //
66 template <typename T>
67 void append_(T&& t) {
68 impl::value_append(_core, std::forward<T>(t));
69 }
70
71 //
72 // Concatenates another bson array directly.
73 //
74 void append_(concatenate_array array) {
75 _core->concatenate(array.view());
76 }
77
78 core* _core;
79};
80
81} // namespace basic
82} // namespace builder
83} // namespace v_noabi
84} // namespace bsoncxx
85
87
Redeclares bsoncxx::v_noabi::builder::concatenate in the bsoncxx::v_noabi::builder::basic namespace.
The bsoncxx macro guard postlude header.
The bsoncxx macro guard prelude header.
A JSON-like builder for creating arrays.
Definition list.hpp:175
An internal class of builder::basic. Users should almost always construct a builder::basic::array ins...
Definition sub_array.hpp:41
void append()
Inductive base-case for the variadic append(...)
Definition sub_array.hpp:60
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:46
core & concatenate(const bsoncxx::v_noabi::document::view &view)
Appends the keys from a BSON document into this BSON datum.
types::bson_value::view view()
Provides a view of the underlying BSON value.
Definition list.hpp:97
Provides concatenators for use with "streaming" BSON builder syntax.
Provides bsoncxx::v_noabi::builder::core.
The top-level namespace within which all bsoncxx library entities are declared.
Container to concatenate an array.
Definition concatenate.hpp:64
Declares bsoncxx::v_noabi::builder::basic::sub_array.