jsonv::extraction_context Class Reference

Inheritance diagram for jsonv::extraction_context:

Collaboration diagram for jsonv::extraction_context:

Public Member Functions
	extraction_context ()
	Create a new instance using the default formats (formats::global).
	extraction_context (jsonv::formats fmt, const jsonv::version &ver=jsonv::version(), jsonv::path p=jsonv::path(), const void *userdata=nullptr)
	Create a new instance using the given fmt, ver and p.
const jsonv::path &	path () const
	Get the current path this extraction_context is extracting for.
template<typename T >
T	extract (const value &from) const
	Attempt to extract a T from from using the formats associated with this context.
void	extract (const std::type_info &type, const value &from, void *into) const
template<typename T >
T	extract_sub (const value &from, jsonv::path subpath) const
	Attempt to extract a T from from.at_path(subpath) using the formats associated with this context.
void	extract_sub (const std::type_info &type, const value &from, jsonv::path subpath, void *into) const
template<typename T >
T	extract_sub (const value &from, path_element elem) const
	Attempt to extract a T from from.at_path({elem}) using the formats associated with this context.
Public Member Functions inherited from jsonv::context_base
	context_base ()
	Create a new instance using the default formats (formats::global).
	context_base (jsonv::formats fmt, const jsonv::version &ver=jsonv::version(1), const void *userdata=nullptr)
	Create a new instance using the given fmt, ver and p.
const jsonv::formats &	formats () const
	Get the formats object backing extraction and encoding.
const jsonv::version	version () const
	Get the version this extraction_context was created with.
const void *	user_data () const
	Get a pointer to arbitrary user data.

Detailed Description

Definition at line 601 of file serialization.hpp.

Member Function Documentation

extract()

template<typename T >

T jsonv::extraction_context::extract ( const value &  from ) const

inline

Attempt to extract a T from from using the formats associated with this context.

Template Parameters

T	is the type to extract from from. It must be movable.

Exceptions

extraction_error

if anything goes wrong when attempting to extract a value.

Definition at line 631 of file serialization.hpp.

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extract_sub() [1/2]

template<typename T >

T jsonv::extraction_context::extract_sub ( const value &  from, jsonv::path  subpath  ) const

inline

Attempt to extract a T from from.at_path(subpath) using the formats associated with this context.

Template Parameters

T	is the type to extract from from. It must be movable.

Exceptions

extraction_error

if anything goes wrong when attempting to extract a value.

Definition at line 652 of file serialization.hpp.

extract_sub() [2/2]

template<typename T >

T jsonv::extraction_context::extract_sub ( const value &  from, path_element  elem  ) const

inline

Attempt to extract a T from from.at_path({elem}) using the formats associated with this context.

Template Parameters

T	is the type to extract from from. It must be movable.

Exceptions

extraction_error

if anything goes wrong when attempting to extract a value.

Definition at line 670 of file serialization.hpp.

path()

const jsonv::path & jsonv::extraction_context::path ( ) const

inline

Get the current path this extraction_context is extracting for.

This is useful when debugging and generating error messages.

Definition at line 619 of file serialization.hpp.

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The documentation for this class was generated from the following file:

• jsonv/serialization.hpp