MongoDB C++ Driver 4.1.0
All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
key_context.hpp
Go to the documentation of this file.
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
19
24
26
27namespace bsoncxx {
28namespace v_noabi {
29namespace builder {
30namespace stream {
31
50template <class base>
52 public:
59 key_context(core* core) : _core(core) {}
60
71 template <std::size_t n>
72 value_context<key_context> operator<<(char const (&v)[n]) {
73 _core->key_view(stdx::string_view{v, n - 1});
74 return value_context<key_context>(_core);
75 }
76
87 value_context<key_context> operator<<(std::string str) {
88 _core->key_owned(std::move(str));
89 return value_context<key_context>(_core);
90 }
91
102 value_context<key_context> operator<<(stdx::string_view str) {
103 _core->key_view(std::move(str));
104 return value_context<key_context>(_core);
105 }
106
115 template <typename T>
116 detail::requires_t<key_context&, detail::is_invocable<T, key_context>> operator<<(T&& func) {
117 detail::invoke(std::forward<T>(func), *this);
118 return *this;
119 }
120
131 template <typename T>
132 detail::requires_t<
133 bsoncxx::v_noabi::document::value,
134 std::is_same<base, closed_context>,
135 detail::is_alike<T, finalize_type>>
136 operator<<(T&&) {
137 return _core->extract_document();
138 }
139
150 _core->concatenate(doc);
151 return *this;
152 }
153
160 _core->close_document();
161 return unwrap();
162 }
163
168 operator key_context<>() {
169 return key_context<>(_core);
170 }
171
172 private:
173 base unwrap() {
174 return base(_core);
175 }
176
177 core* _core;
178};
179
180} // namespace stream
181} // namespace builder
182} // namespace v_noabi
183} // namespace bsoncxx
184
186
The bsoncxx v_noabi macro guard postlude header.
The bsoncxx v_noabi macro guard prelude header.
key_context(core *core)
Create a key_context given a core builder.
Definition key_context.hpp:59
A polyfill for std::string_view.
Definition string_view.hpp:411
A low-level interface for constructing BSON documents and arrays.
Definition core.hpp:46
core & key_owned(std::string key)
Appends a key passed as an STL string. Transfers ownership of the key to this class.
core & key_view(stdx::string_view key)
Appends a key passed as a non-owning stdx::string_view.
key_context operator<<(concatenate_doc doc)
<< operator for concatenating another document.
Definition key_context.hpp:149
value_context< key_context > operator<<(char const (&v)[n])
<< operator for accepting a literal key and appending it to the core builder.
Definition key_context.hpp:72
base operator<<(close_document_type const)
<< operator for closing a subdocument in the core builder.
Definition key_context.hpp:159
key_context(core *core)
Create a key_context given a core builder.
Definition key_context.hpp:59
A stream context which expects a value.
Definition value_context.hpp:51
Declares bsoncxx::v_noabi::builder::stream::closed_context.
Provides bsoncxx::v_noabi::builder::core.
Declares bsoncxx::v_noabi::builder::stream::key_context.
Declares entities used with "streaming" BSON builder syntax.
Declares entities used to build BSON documents.
Declares entities whose ABI stability is NOT guaranteed.
The top-level namespace within which all bsoncxx library entities are declared.
Container to concatenate a document.
Definition concatenate.hpp:34
The type of a stream manipulator to close a subdocument.
Definition helpers.hpp:41
Provides std::string_view-related polyfills for library API usage.
For internal use only!
Provides bsoncxx::v_noabi::builder::stream::value_context.