llfio_v2_xxx::storage_profile::item< T > Struct Template Reference

A tag-value item in the storage profile where T is the type of value stored. More...

#include "storage_profile.hpp"

Inheritance diagram for llfio_v2_xxx::storage_profile::item< T >:

Public Types
using	handle_type = item_base::handle_type
using	callable = outcome< void >(*)(storage_profile &sp, handle_type &h)

Public Member Functions
constexpr	item (const char *_name, callable c, const char *_desc=nullptr, T _value=default_value< T >())
void	clear ()
	Clear this item, returning value to default.
outcome< void >	operator() (storage_profile &sp, handle_type &h) const
	Set this item if its value is default.

Public Attributes
callable	impl
T	value
	The storage of the item.
char	_padding [item_size - sizeof(item_base) - sizeof(callable) - sizeof(T)]
const char *	name
	The name of the item in colon delimited category format.
const char *	description
	Some description of the item.
storage_types	type
	The type of the value.

Static Public Attributes
static constexpr size_t	item_size = item_base::item_size

Detailed Description

template<class T>
struct llfio_v2_xxx::storage_profile::item< T >

A tag-value item in the storage profile where T is the type of value stored.

Constructor & Destructor Documentation

item()

template<class T >

constexpr llfio_v2_xxx::storage_profile::item< T >::item ( const char *  _name, callable  c, const char *  _desc = nullptr, T  _value = default_value<T>()  )

inlineconstexpr

        : item_base(_name, _desc, map_to_storage_type<T>())
        , impl(c)
        , value(std::move(_value))
        , _padding{0}
    {
      static_assert(sizeof(*this) == item_size, "");
    }

Member Function Documentation

clear()

template<class T >

void llfio_v2_xxx::storage_profile::item< T >::clear ( )

inline

Clear this item, returning value to default.

{ value = default_value<T>(); }

operator()()

template<class T >

outcome< void > llfio_v2_xxx::storage_profile::item< T >::operator() ( storage_profile &  sp, handle_type &  h  ) const

inline

Set this item if its value is default.

    {
      if(value != default_value<T>())
      {
        return success();
      }
      return impl(sp, h);
    }

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

• include/llfio/v2.0/storage_profile.hpp