Generalized implementation handling container variants. More...

#include <variant_value.hpp>

Inheritance diagram for wfl::variant_container< T >:

Public Member Functions
	variant_container (const T &container)

virtual bool	is_empty () const override
	Whether the stored value is considered empty or not. More...

virtual std::size_t	num_elements () const override
	Returns the number of elements in a type. More...

virtual bool	as_bool () const override
	Returns a bool expression of the variant value. More...

T &	get_container ()

const T &	get_container () const

virtual std::string	string_cast () const override
	Returns the stored variant value in plain string form. More...

virtual std::string	get_serialized_string () const override
	Returns the stored variant value in formula syntax. More...

virtual std::string	get_debug_string (formula_seen_stack &seen, bool verbose) const override
	Returns debug info for the variant value. More...

bool	contains (const variant &member) const

virtual boost::iterator_range< variant_iterator >	make_iterator () const override
	Creates an iterator pair that can be used for iteration. More...

virtual void	iterator_inc (utils::any &) const override
	Implements the increment functionality of variant_iterator for a value of this type. More...

virtual void	iterator_dec (utils::any &) const override
	Implements the decrement functionality of variant_iterator for a value of this type. More...

virtual bool	iterator_equals (const utils::any &first, const utils::any &second) const override
	Implements the equality functionality of variant_iterator for a value of this type. More...

Public Member Functions inherited from wfl::variant_value_base
virtual bool	equals (variant_value_base &) const
	Called to determine if this variant is equal to another of the same type. More...

virtual bool	less_than (variant_value_base &) const
	Called to determine if this variant is less than another of the same type. More...

virtual const formula_variant::type &	get_type () const
	Returns the id of the variant type. More...

virtual variant	deref_iterator (const utils::any &iter) const
	Implements the dereference functionality of variant_iterator for a value of this type. More...

virtual	~variant_value_base ()

Protected Types
using	mod_func_t = std::function< std::string(const variant &)>

Protected Member Functions
virtual std::string	to_string_detail (const typename T::value_type &value, mod_func_t mod_func) const =0

Private Member Functions
std::string	to_string_impl (bool annotate, bool annotate_empty, mod_func_t mod_func) const
	Implementation to handle string conversion for string_cast, get_serialized_string, and get_debug_string. More...

Private Attributes
T	container_

Detailed Description

template<typename T>
class wfl::variant_container< T >

Generalized implementation handling container variants.

This class shouldn't usually be used directly. Instead, it's better to create a new derived class specialized to a specific container type.

Definition at line 415 of file variant_value.hpp.

Member Typedef Documentation

◆ mod_func_t

template<typename T >

using wfl::variant_container< T >::mod_func_t = std::function<std::string(const variant&)>

protected

Definition at line 471 of file variant_value.hpp.

Constructor & Destructor Documentation

◆ variant_container()

template<typename T >

wfl::variant_container< T >::variant_container ( const T & container )

inlineexplicit

Definition at line 418 of file variant_value.hpp.

Member Function Documentation

◆ as_bool()

template<typename T >

virtual bool wfl::variant_container< T >::as_bool ( ) const

inlineoverridevirtual

Returns a bool expression of the variant value.

Reimplemented from wfl::variant_value_base.

Definition at line 436 of file variant_value.hpp.

References wfl::variant_container< T >::is_empty().

◆ contains()

template<typename T >

bool wfl::variant_container< T >::contains ( const variant & member ) const

inline

Definition at line 457 of file variant_value.hpp.

References wfl::variant_container< T >::container_.

◆ get_container() [1/2]

template<typename T >

T& wfl::variant_container< T >::get_container ( )

inline

Definition at line 441 of file variant_value.hpp.

References wfl::variant_container< T >::container_.

Referenced by wfl::variant::operator+().

◆ get_container() [2/2]

template<typename T >

const T& wfl::variant_container< T >::get_container ( ) const

inline

Definition at line 446 of file variant_value.hpp.

References wfl::variant_container< T >::container_.

◆ get_debug_string()

template<typename T >

std::string wfl::variant_container< T >::get_debug_string	(	formula_seen_stack &	,
		bool
	)		const

overridevirtual

Returns debug info for the variant value.

Reimplemented from wfl::variant_value_base.

Definition at line 261 of file variant_value.cpp.

References wfl::variant::to_debug_string().

◆ get_serialized_string()

template<typename T >

std::string wfl::variant_container< T >::get_serialized_string

overridevirtual

Returns the stored variant value in formula syntax.

Reimplemented from wfl::variant_value_base.

Definition at line 255 of file variant_value.cpp.

References wfl::variant::serialize_to_string().

◆ is_empty()

template<typename T >

virtual bool wfl::variant_container< T >::is_empty ( ) const

inlineoverridevirtual

Whether the stored value is considered empty or not.

Reimplemented from wfl::variant_value_base.

Definition at line 426 of file variant_value.hpp.

References wfl::variant_container< T >::container_.

Referenced by wfl::variant_container< T >::as_bool().

◆ iterator_dec()

template<typename T >

void wfl::variant_container< T >::iterator_dec ( utils::any & ) const

overridevirtual

Implements the decrement functionality of variant_iterator for a value of this type.

The parameter is an opaque reference that was passed to the variant_iterator by make_iterator.

Reimplemented from wfl::variant_value_base.

Definition at line 279 of file variant_value.cpp.

◆ iterator_equals()

template<typename T >

bool wfl::variant_container< T >::iterator_equals	(	const utils::any &	,
		const utils::any &
	)		const

overridevirtual

Implements the equality functionality of variant_iterator for a value of this type.

Note that this is only called if the two iterators are already known to be of the same type.

The first parameter is an opaque reference that was passed to the variant_iterator by make_iterator. The second parameter is an opaque reference that was passed to the variant_iterator by make_iterator.

Reimplemented from wfl::variant_value_base.

Definition at line 285 of file variant_value.cpp.

◆ iterator_inc()

template<typename T >

void wfl::variant_container< T >::iterator_inc ( utils::any & ) const

overridevirtual

Implements the increment functionality of variant_iterator for a value of this type.

The parameter is an opaque reference that was passed to the variant_iterator by make_iterator.

Reimplemented from wfl::variant_value_base.

Definition at line 273 of file variant_value.cpp.

◆ make_iterator()

template<typename T >

boost::iterator_range< variant_iterator > wfl::variant_container< T >::make_iterator

overridevirtual

Creates an iterator pair that can be used for iteration.

For an iterable type, it should use the two-argument constructor of variant-iterator, passing the underlying iterator as the utils::any parameter.

This creates both the begin and end iterator, but the variant implementation discards one of the two.

Reimplemented from wfl::variant_value_base.

Definition at line 267 of file variant_value.cpp.

◆ num_elements()

template<typename T >

virtual std::size_t wfl::variant_container< T >::num_elements ( ) const

inlineoverridevirtual

Returns the number of elements in a type.

Not relevant for every derivative.

Reimplemented from wfl::variant_value_base.

Definition at line 431 of file variant_value.hpp.

References wfl::variant_container< T >::container_.

◆ string_cast()

template<typename T >

std::string wfl::variant_container< T >::string_cast

overridevirtual

Returns the stored variant value in plain string form.

Reimplemented from wfl::variant_value_base.

Definition at line 249 of file variant_value.cpp.

References wfl::variant::string_cast().

◆ to_string_detail()

template<typename T >

virtual std::string wfl::variant_container< T >::to_string_detail	(	const typename T::value_type &	value,
		mod_func_t	mod_func
	)		const

protectedpure virtual

◆ to_string_impl()

template<typename T >

std::string wfl::variant_container< T >::to_string_impl	(	bool	annotate,
		bool	annotate_empty,
		mod_func_t	mod_func
	)		const

private

Implementation to handle string conversion for string_cast, get_serialized_string, and get_debug_string.

Derived classes should provide type-specific value handling by implementing to_string_detail.

Definition at line 216 of file variant_value.cpp.

Member Data Documentation

◆ container_

template<typename T >

T wfl::variant_container< T >::container_

private

Definition at line 484 of file variant_value.hpp.

Referenced by wfl::variant_container< T >::contains(), wfl::variant_container< T >::get_container(), wfl::variant_container< T >::is_empty(), and wfl::variant_container< T >::num_elements().

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

formula/variant_value.hpp
formula/variant_value.cpp

Public Member Functions

Protected Types

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

template<typename T> class wfl::variant_container< T >

Member Typedef Documentation

◆ mod_func_t

Constructor & Destructor Documentation

◆ variant_container()

Member Function Documentation

◆ as_bool()

◆ contains()

◆ get_container() [1/2]

◆ get_container() [2/2]

◆ get_debug_string()

◆ get_serialized_string()

◆ is_empty()

◆ iterator_dec()

◆ iterator_equals()

◆ iterator_inc()

◆ make_iterator()

◆ num_elements()

◆ string_cast()

◆ to_string_detail()

◆ to_string_impl()

Member Data Documentation

◆ container_

template<typename T>
class wfl::variant_container< T >