An adapter for optional-like types. More...

#include <jsonv/serialization/optional_adapter.hpp>

Inheritance diagram for jsonv::optional_adapter< TOptional >:

Collaboration diagram for jsonv::optional_adapter< TOptional >:

Protected Member Functions
virtual TOptional	create (const extraction_context &context, const value &from) const override

virtual value	to_json (const serialization_context &context, const TOptional &from) const override

Additional Inherited Members
Public Member Functions inherited from jsonv::adapter_for< TOptional >
virtual const std::type_info &	get_type () const override
	Get the run-time type this `extractor` knows how to extract.

virtual void	extract (const extraction_context &context, const value &from, void *into) const override
	Extract a the type from a `value` into a region of memory.

virtual value	to_json (const serialization_context &context, const void *from) const override
	Create a `value` from the value in the given region of memory.

Detailed Description

template<typename TOptional>
class jsonv::optional_adapter< TOptional >

An adapter for optional-like types.

This is for convenience of creating an adapter for things like std::optional or boost::optional.

Template Parameters

TOptional The optional container type. It must have a member type named value_type which holds the actual type. It must default-construct to the "none" type and have a single-argument constructor which takes a TOptional::value_type. It must support a boolean conversion operator for checking if the value is none and a unary operator* for getting the underlying value. Both std::optional and boost::optional possess all of these properties.

Definition at line 32 of file optional_adapter.hpp.