MongoDB C++ Driver mongocxx-4.0.0
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#include <bsoncxx/v_noabi/bsoncxx/builder/stream/value_context.hpp>
A stream context which expects a value, which can later be followed by more key/value pairs.
The template argument can be used to hold additional information about containing documents or arrays. I.e. value_context<> implies that this document is a sub_document in a document, while array_context would indicated a sub_document in an array. These types can be nested, such that contextual parsing (for key/value pairs) and depth (to prevent an invalid document_close) are enforced by the type system.
When in document context, the first parameter will be in key_context, then in value_context, then in key_context, etc.
I.e. builder << key_context << value_context << key_context << ...
Public Member Functions | |
value_context (core *core) | |
Create a value_context given a core builder. | |
operator single_context () | |
Conversion operator for single_context. | |
array_context< base > | operator<< (const open_array_type) |
<< operator for opening a new subarray in the core builder. | |
key_context< base > | operator<< (const open_document_type) |
<< operator for opening a new subdocument in the core builder. | |
template<typename T > | |
detail::requires_t< base, detail::is_invocable< T, single_context > > | operator<< (T &&func) |
<< operator for accepting a callable of the form void(single_context) and invoking it to perform a value append to the core builder. | |
template<class T > | |
detail::requires_not_t< base, detail::is_invocable< T, single_context > > | operator<< (T &&t) |
<< operator for accepting a real value and appending it to the core builder. | |
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inline |
Create a value_context given a core builder.
core | The core builder to orchestrate |
bsoncxx::v_noabi::builder::stream::value_context< T >::operator single_context | ( | ) |
Conversion operator for single_context.
Implementation of the single_context conversion operator for value_context.
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inline |
<< operator for opening a new subarray in the core builder.
The argument must be an open_array_type token (it is otherwise ignored).
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inline |
<< operator for opening a new subdocument in the core builder.
The argument must be an open_document_type token (it is otherwise ignored).
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inline |
<< operator for accepting a callable of the form void(single_context) and invoking it to perform a value append to the core builder.
func | The callback to invoke |
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inline |
<< operator for accepting a real value and appending it to the core builder.
t | The value to append |