dasmig::callback_component< T, GenFn, Formatter > Class Template Reference

Component that wraps a callable for one-off or computed values. More...

#include <entitygen.hpp>

Inheritance diagram for dasmig::callback_component< T, GenFn, Formatter >:

Public Member Functions
	callback_component (std::wstring key, GenFn fn, Formatter fmt={})
	Construct a callback component.
std::wstring	key () const override
	Unique key identifying this component (e.g. "name", "age").
std::any	generate (const generation_context &ctx) const override
	Generate a random value for this component.
std::wstring	to_string (const std::any &value) const override
	Convert a generated value to a displayable string.
Public Member Functions inherited from dasmig::component
virtual	~component ()=default
	Virtual destructor for proper cleanup of derived classes.
virtual double	weight () const
	Inclusion weight for this component (0.0 to 1.0).
virtual bool	validate (const std::any &value) const
	Validate a generated value.
virtual bool	should_generate (const generation_context &ctx) const
	Decide whether this component should be generated.

Additional Inherited Members
Static Protected Member Functions inherited from dasmig::component
static std::wstring	default_to_string (const std::any &value)
	Default conversion covering common standard types.

Detailed Description

template<typename T, typename GenFn, typename Formatter = use_default_formatter>
class dasmig::callback_component< T, GenFn, Formatter >

Component that wraps a callable for one-off or computed values.

Avoids subclassing component entirely. The callable receives a generation_context and returns a value of type T.

Template Parameters

T	The return type of the callable.
GenFn	Callable type taking const generation_context&.
Formatter	Optional callable for custom string conversion.

Definition at line 315 of file entitygen.hpp.

Constructor & Destructor Documentation

callback_component()

template<typename T , typename GenFn , typename Formatter = use_default_formatter>

dasmig::callback_component< T, GenFn, Formatter >::callback_component ( std::wstring  key, GenFn  fn, Formatter  fmt = {}  )

inlineexplicit

Construct a callback component.

Parameters

key	Unique component key.
fn	Callable invoked during generation.
fmt	Optional custom formatter.

Definition at line 322 of file entitygen.hpp.

Member Function Documentation

generate()

template<typename T , typename GenFn , typename Formatter = use_default_formatter>

std::any dasmig::callback_component< T, GenFn, Formatter >::generate ( const generation_context &  ctx ) const

inlineoverridevirtual

Generate a random value for this component.

Parameters

ctx	Context providing access to previously generated values and a seeded random engine.

Returns

The generated value wrapped in std::any.

Implements dasmig::component.

Definition at line 328 of file entitygen.hpp.

key()

template<typename T , typename GenFn , typename Formatter = use_default_formatter>

std::wstring dasmig::callback_component< T, GenFn, Formatter >::key ( ) const

inlineoverridevirtual

Unique key identifying this component (e.g. "name", "age").

Returns

The component key as a wide string.

Implements dasmig::component.

Definition at line 326 of file entitygen.hpp.

to_string()

template<typename T , typename GenFn , typename Formatter = use_default_formatter>

std::wstring dasmig::callback_component< T, GenFn, Formatter >::to_string ( const std::any &  value ) const

inlineoverridevirtual

Convert a generated value to a displayable string.

Parameters

value

The value previously returned by generate().

Returns

A human-readable wide-string representation.

See also

default_to_string()

Implements dasmig::component.

Definition at line 334 of file entitygen.hpp.

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

• dasmig/entitygen.hpp