#include <json.hpp>

Inheritance diagram for fable::schema::FromJson< T >:

Collaboration diagram for fable::schema::FromJson< T >:

Public Types
using	Type = T

Public Member Functions
	FromJson (Type *ptr, JsonType t, std::string desc)

Json	json_schema () const override

bool	validate (const Conf &c, std::optional< SchemaError > &err) const override

void	to_json (Json &j) const override

void	from_conf (const Conf &c) override

void	reset_ptr () override

Json	serialize (const Type &x) const

void	serialize_into (Json &j, const Type &x) const

template<typename = std::enable_if<std::is_default_constructible_v<Type>>>
Type	deserialize (const Conf &c) const

void	deserialize_into (const Conf &c, Type &x) const

virtual Json	to_json () const

virtual void	to_json (Json &) const=0

Public Member Functions inherited from fable::schema::Base< FromJson< T > >
std::unique_ptr< Interface >	clone () const override

	operator Box () const

JsonType	type () const override

std::string	type_string () const override

Json	usage () const override

bool	is_required () const override

FromJson< T >	require () &&

FromJson< T >	required (bool value) &&

FromJson< T >	reset_pointer () &&

bool	has_description () const

void	set_description (std::string s) override

const std::string &	description () const override

FromJson< T >	description (std::string desc) &&

Public Member Functions inherited from fable::schema::Interface
virtual bool	is_variant () const

virtual void	validate_or_throw (const Conf &c) const final

virtual std::optional< SchemaError >	fail (const Conf &c) const final

virtual bool	is_valid (const Conf &c) const final

virtual Json	to_json () const

Additional Inherited Members
Protected Member Functions inherited from fable::schema::Base< FromJson< T > >
	Base (const Base< FromJson< T > > &)=default

	Base (Base< FromJson< T > > &&) noexcept=default

	Base (JsonType t, std::string desc)

	Base (JsonType t)

	Base (std::string desc)

Base< FromJson< T > > &	operator= (const Base< FromJson< T > > &)=default

Base< FromJson< T > > &	operator= (Base< FromJson< T > > &&) noexcept=default

bool	validate_type (const Conf &c, std::optional< SchemaError > &err) const

SchemaError	error (const Conf &c, std::string_view format, Args &&... args) const

SchemaError	error (const ConfError &e) const

SchemaError	wrong_type (const Conf &c) const

bool	set_error (std::optional< SchemaError > &err, const Conf &c, std::string_view format, Args &&... args) const

bool	set_error (std::optional< SchemaError > &err, const ConfError &e) const

bool	set_error (std::optional< SchemaError > &err, SchemaError &&e) const

bool	set_wrong_type (std::optional< SchemaError > &err, const Conf &c) const

void	augment_schema (Json &j) const

Protected Member Functions inherited from fable::schema::Interface
	Interface (const Interface &)=default

	Interface (Interface &&) noexcept=default

Interface &	operator= (const Interface &)=default

Interface &	operator= (Interface &&) noexcept=default

Protected Attributes inherited from fable::schema::Base< FromJson< T > >
JsonType	type_

bool	required_

std::string	desc_

Detailed Description

template<typename T>
class fable::schema::FromJson< T >

FromJson uses the from_json and to_json methods for deserializing and deserializing data to the type.

This provides only minimal validation, and its use is not recommended. It is only included because sometimes we have little choice but to work with what is laid before us.

Note that the constructor is different to most other schema types: it requires you to specify the expected JSON type. This incidentally means that it is also very hard to use this schema type by accident.

Member Function Documentation

◆ from_conf()

template<typename T >

void fable::schema::FromJson< T >::from_conf ( const Conf & )

inlineoverridevirtual

Apply the input JSON configuration.

This does not validate the input.

Implements fable::schema::Interface.

◆ json_schema()

template<typename T >

Json fable::schema::FromJson< T >::json_schema ( ) const

inlineoverridevirtual

Return the JSON schema.

Example output:

{ "$schema": "http://json-schema.org/draft-07/schema#", "description": "stand-in no-operation simulator", "properties": { "vehicles": { "description": "list of vehicle names to make available", "items": { "type": "string" }, "type": "array" } }, "title": "nop", "additionalProperties": false, "type": "object" }

See the following links for the specification:

Implements fable::schema::Interface.

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◆ reset_ptr()

template<typename T >

void fable::schema::FromJson< T >::reset_ptr ( )

inlineoverridevirtual

Reset the internal pointer to nullptr, protecting against invalid access.

This should be used when a schema is used after the backing data has been deleted.

Implements fable::schema::Interface.

◆ to_json() [1/3]

template<typename T >

virtual Json fable::schema::Interface::to_json

inline

Return the current value of the destination.

Warning: This is NOT an efficient operation, but it can be useful for cases where speed is not important.

◆ to_json() [2/3]

template<typename T >

virtual void fable::schema::Interface::to_json

Return the current value of the destination.

Warning: This is NOT an efficient operation, but it can be useful for cases where speed is not important.

◆ to_json() [3/3]

template<typename T >

void fable::schema::FromJson< T >::to_json ( Json & ) const

inlineoverridevirtual

Return the current value of the destination.

Warning: This is NOT an efficient operation, but it can be useful for cases where speed is not important.

Implements fable::schema::Interface.

◆ validate()

template<typename T >

bool fable::schema::FromJson< T >::validate	(	const Conf &	c,
		std::optional< SchemaError > &	error
	)		const

inlineoverridevirtual

Validate the input JSON configuration for correctness.

This method should only set error if there is an error. This method should not reset error if there is no error. Therefore, the content of error is only valid if the method returns false. This allows you to chain validates and check at the end if there was an error.
This method should not throw if there is a schema error!

Parameters

c	JSON to check
error	reference to store error if occurred

Returns: true if valid

Implements fable::schema::Interface.

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

/home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/v0.25.1/fable/include/fable/schema/json.hpp

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

template<typename T> class fable::schema::FromJson< T >

Member Function Documentation

◆ from_conf()

◆ json_schema()

◆ reset_ptr()

◆ to_json() [1/3]

◆ to_json() [2/3]

◆ to_json() [3/3]

◆ validate()

template<typename T>
class fable::schema::FromJson< T >