#include <struct.hpp>

Inheritance diagram for fable::schema::Struct:

Collaboration diagram for fable::schema::Struct:

Public Member Functions
	Struct (std::string desc="")

	Struct (std::string desc, PropertyList< Box > props)

	Struct (PropertyList< Box > props)

	Struct (std::string desc, const Box &base, PropertyList< Box > props)

	Struct (const Box &base, PropertyList< Box > props)

void	set_property (const std::string &key, Box &&s)

Struct	property (const std::string &key, Box &&s) &&

void	set_properties (PropertyList< Box > props)

void	set_properties_from (const Struct &s)

void	set_properties_from (const Box &s)

template<typename T , typename = enable_if_confable_t<T>>
void	set_properties_from (const T *x)

template<typename T >
Struct	properties_from (const T x) &&

void	set_require (std::initializer_list< std::string > init)

Struct	require (std::initializer_list< std::string > init) &&

void	set_require_all ()

Struct	require_all () &&

Struct	additional_properties (bool v) &&

template<typename S , typename = enable_if_schema_t<S>>
void	set_additional_properties (const S &s)

template<typename S , typename = enable_if_schema_t<S>>
Struct	additional_properties (const S &s) &&

bool	additional_properties () const

void	reset_ptr () override

Json	usage () const override

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

virtual Json	to_json () const

virtual void	to_json (Json &) const=0

Public Member Functions inherited from fable::schema::Base< Struct >
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

Struct	require () &&

Struct	required (bool value) &&

Struct	reset_pointer () &&

bool	has_description () const

void	set_description (std::string s) override

const std::string &	description () const override

Struct	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< Struct >
	Base (const Base< Struct > &)=default

	Base (Base< Struct > &&) noexcept=default

	Base (JsonType t, std::string desc)

	Base (JsonType t)

	Base (std::string desc)

Base< Struct > &	operator= (const Base< Struct > &)=default

Base< Struct > &	operator= (Base< Struct > &&) 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< Struct >
JsonType	type_

bool	required_

std::string	desc_

Detailed Description

Struct maintains a key-value mapping, where the list of keys is usually known and the values can have different types (schemas).

This is usually the basis of any schema, since most start with a JSON object.

This should not be confused with the Map type.

See also: fable/schema/map.hpp

Constructor & Destructor Documentation

◆ Struct()

fable::schema::Struct::Struct	(	std::string	desc,
		const Box &	base,
		PropertyList< Box >	props
	)

inline

Instantiate a Struct with a base Schema, which should also be a Struct, then extend it with the property list.

This is particularly useful when the Confable is inheriting from a base class:

struct Sub : public Base {
  std::string member;
  CONFABLE_SCHEMA(Sub) {
    return Struct{
      Base::schema_impl(),
      {
        {"member", make_schema(&member, "important addition")},
      }
    };
  }
};

Warning: When implementing schema_impl, for example with CONFABLE_SCHEMA, it is absolutely important that you not call Base::schema(), as this will internally call this->schema_impl(), which will lead to an infinite recursion! Instead, call Base::schema_impl().

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Member Function Documentation

◆ additional_properties()

Struct fable::schema::Struct::additional_properties ( bool v ) &&

inline

Set whether to tolerate unknown fields in this entry.

The default is false.
Meant to be used during construction.

◆ from_conf()

void fable::schema::Struct::from_conf ( const Conf & )

overridevirtual

Apply the input JSON configuration.

This does not validate the input.

Implements fable::schema::Interface.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

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◆ json_schema()

Json fable::schema::Struct::json_schema ( ) const

overridevirtual

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.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ reset_ptr()

void fable::schema::Struct::reset_ptr ( )

overridevirtual

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.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ set_properties()

void fable::schema::Struct::set_properties ( PropertyList< Box > props )

Set all properties.

This overwrites any already existing property of the same key.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

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◆ set_properties_from()

void fable::schema::Struct::set_properties_from ( const Struct & s )

inline

Add the properties from s to this schema.

This will overwrite any existing properties.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

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◆ set_property()

void fable::schema::Struct::set_property	(	const std::string &	key,
		Box &&	s
	)

Set the property to this schema.

This overwrites any already existing field of the same key.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

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◆ set_require()

void fable::schema::Struct::set_require ( std::initializer_list< std::string > init )

Set which entries are required.

Complexity: O(n*m) with n the number of current properties and m the number of properties in init.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ set_require_all()

void fable::schema::Struct::set_require_all ( )

Set whether all entries are required.

The default is false.
Meant to be used during construction.
This will only act on properties that exist at the time that this is called.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ to_json() [1/3]

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.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ to_json() [2/3]

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]

void fable::schema::Struct::to_json ( Json & ) const

overridevirtual

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.

◆ usage()

Json fable::schema::Struct::usage ( ) const

overridevirtual

Return a compact JSON description of the schema. This is useful for human-readable error output.

Example output:

{ "field1": "boolean! :: lorem ipsum dolor sit amet", "field2": { "field2.1": "integer :: lorem ipsum dolor sit amet" "field2.2": "boolean :: lorem ipsum dolor sit amet" }, "field3": "array of integer :: lorem ipsum dolor sit amet", "field4": [{ "field4.1": "string :: lorem ipsum dolor sit amet" "field4.2": "boolean :: lorem ipsum dolor sit amet" }] }

When describing the schema of a primitive array, we can represent that as a single string. But when the array contains an object, we wrap a single object in an array. This isn't awfully consistent, but it's the best we can do.

Implements fable::schema::Interface.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

◆ validate()

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

overridevirtual

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.

Examples: /home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp.

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

/home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/include/fable/schema/struct.hpp
/home/docs/checkouts/readthedocs.org/user_builds/cloe/checkouts/latest/fable/src/fable/schema/struct.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Struct()

Member Function Documentation

◆ additional_properties()

◆ from_conf()

◆ json_schema()

◆ reset_ptr()

◆ set_properties()

◆ set_properties_from()

◆ set_property()

◆ set_require()

◆ set_require_all()

◆ to_json() [1/3]

◆ to_json() [2/3]

◆ to_json() [3/3]

◆ usage()

◆ validate()