MetaUtils.h File Reference

Basic C++ metaprogramming utilities. More...

#include <array>
#include <string>
#include <string_view>
#include <memory>
#include <functional>
#include <type_traits>

Go to the source code of this file.

Classes
struct	util::details::ClassNameStaticDumper< T >
	Implementation detail of staticDumpClassName(). More...
struct	util::self_type< T >
	Trait returning the very same type as in the template argument. More...
struct	util::always_false_type< typename >
	A std::false_type with a template argument. More...
struct	util::always_true_type< typename >
	A std::true_type with a template argument. More...
struct	util::find_next_type< T, StartFrom, Types >
	Trait: index of the first occurrence of T among the specified Types, starting from the one with index StartFrom. More...
struct	util::is_any_of< T, Types >
	Trait: whether T is among the specified Types. More...
struct	util::is_instance_of< Template, T >
	Trait describing whether T is a template instance of Template. More...
struct	util::is_STLarray< T >
	Identifies whether the specified type is a STL array. More...
struct	util::is_character_type< T >
	Trait: whether type T is a character type. More...
struct	util::is_string_type< T >
	Trait: whether type T is a character string type. More...
struct	util::is_basic_string_type< T >
	Trait: whether type T is a STL string type. More...
struct	util::is_basic_string_view_type< T >
	Trait: whether type T is a std::string_view type. More...
struct	util::with_const_as< Base, Key >
	Trait with type Base, plus the constantness as in Key. More...
struct	util::strip_referenceness_type< T >
	Trait with type T stripped of all known reference types. More...
struct	util::reference_addresser
	Functor applying the proper referenced_address() function. More...
struct	util::lvalue_reference_into_wrapper_type< T >
	Trait with type T into std::reference_wrapper if reference. More...
struct	util::details::find_type_impl< Index, Skip, T, Types >
struct	util::details::find_type_impl< Index, Skip, T, Type, Others...>
struct	util::details::find_type_impl< Index, Skip, T >
struct	util::details::is_character_type_impl< T, typename >
struct	util::details::is_string_type_impl< T, typename >
struct	util::details::is_string_type_impl< T, std::enable_if_t< is_character_type_impl< typename T::value_type >::value > >
struct	util::details::is_string_type_impl< T, std::enable_if_t< std::is_pointer_v< std::decay_t< T > > &&is_character_type_impl< std::remove_pointer_t< std::decay_t< T > > >::value > >
struct	util::details::is_string_type_impl< T, std::enable_if_t< std::is_array_v< std::decay_t< T > > &&is_character_type_impl< std::remove_extent_t< std::decay_t< T > > >::value > >
struct	util::details::is_basic_string_type_impl< T >
struct	util::details::is_basic_string_type_impl< std::basic_string< Args...> >
struct	util::details::is_basic_string_view_type_impl< T >
struct	util::details::is_basic_string_view_type_impl< std::basic_string_view< Args...> >
struct	util::details::ClassNameStaticDumper< T >
	Implementation detail of staticDumpClassName(). More...
struct	util::details::with_const_as_impl< Base, typename, typename >
struct	util::details::with_const_as_impl< Base, Key, std::enable_if_t< std::is_const_v< Key > > >
struct	util::details::with_const_as_dispatch_ref< Base, Key, typename >
struct	util::details::with_const_as_dispatch_ref< Base, Key, std::enable_if_t< std::is_lvalue_reference_v< Base > > >
struct	util::details::with_const_as_dispatch_ref< Base, Key, std::enable_if_t< std::is_rvalue_reference_v< Base > > >
struct	util::details::with_const_as_dispatch_keyref< Base, Key >
struct	util::details::with_const_as_dispatcher< Base, Key >
struct	util::details::is_instance_of_impl< Template, T >
struct	util::details::is_instance_of_impl< Template, Template< Args...> >
struct	util::details::strip_referenceness_type_impl< T >
struct	util::details::strip_referenceness_type_impl_wrapref< T, typename >
struct	util::details::strip_referenceness_type_impl_wrapref< T, std::enable_if_t< util::is_reference_wrapper_v< std::remove_cv_t< T > > > >
struct	util::details::strip_referenceness_type_impl_ref< T >
struct	util::details::strip_referenceness_type_impl_ref< T & >
struct	util::details::strip_referenceness_type_impl_ref< T && >
struct	util::details::strip_referenceness_type_impl< T >
struct	util::details::referenced_address_impl< T, typename >
struct	util::details::referenced_address_impl< T, std::enable_if_t< util::is_reference_wrapper_v< T > > >
struct	util::details::lvalue_reference_into_wrapper_type_impl_final< T >
struct	util::details::lvalue_reference_into_wrapper_type_impl_final< T & >
struct	util::details::lvalue_reference_into_wrapper_type_impl_wrapper< T, typename >
struct	util::details::lvalue_reference_into_wrapper_type_impl_wrapper< T, std::enable_if_t< util::is_reference_wrapper_v< T > > >
struct	util::details::lvalue_reference_into_wrapper_type_impl< T >
struct	util::is_instance_of< Template, T >
	Trait describing whether T is a template instance of Template. More...
struct	util::find_next_type< T, StartFrom, Types >
	Trait: index of the first occurrence of T among the specified Types, starting from the one with index StartFrom. More...
struct	util::is_any_of< T, Types >
	Trait: whether T is among the specified Types. More...
struct	util::is_character_type< T >
	Trait: whether type T is a character type. More...
struct	util::is_string_type< T >
	Trait: whether type T is a character string type. More...
struct	util::is_basic_string_type< T >
	Trait: whether type T is a STL string type. More...
struct	util::is_basic_string_view_type< T >
	Trait: whether type T is a std::string_view type. More...
struct	util::is_STLarray< T >
	Identifies whether the specified type is a STL array. More...
struct	util::is_STLarray< std::array< T, N > >
struct	util::with_const_as< Base, Key >
	Trait with type Base, plus the constantness as in Key. More...
struct	util::strip_referenceness_type< T >
	Trait with type T stripped of all known reference types. More...
struct	util::lvalue_reference_into_wrapper_type< T >
	Trait with type T into std::reference_wrapper if reference. More...

Namespaces
	util
	Namespace for general, non-LArSoft-specific utilities.
	util::details

Typedefs
template<typename T >
using	util::self_t = typename self_type< T >::type
	The very same type as in the template argument. More...
using	util::type_traits = std::bool_constant< Value >
template<typename A , typename B >
using	util::is_not_same = std::negation< std::is_same< A, B >>
	The negation of std::is_same. More...
template<typename T , typename... Types>
using	util::find_type = find_next_type< T, 0U, Types...>
	Trait: index of the first occurrence of T among the specified Types. More...
template<typename T >
using	util::is_reference_wrapper = is_instance_of< std::reference_wrapper, T >
	Identifies whether the specified type is a std::reference_wrapper. More...
template<typename T >
using	util::is_unique_ptr = is_instance_of< std::unique_ptr, T >
	Identifies whether the specified type is a std::unique_ptr. More...
template<typename Base , typename Key >
using	util::with_const_as_t = typename with_const_as< Base, Key >::type
	The type Base, plus the constantness as in Key. More...
template<typename T >
using	util::strip_referenceness_t = typename strip_referenceness_type< T >::type
	The type T stripped of all known reference types. More...
template<typename T >
using	util::lvalue_reference_into_wrapper_t = typename lvalue_reference_into_wrapper_type< T >::type
	The type T stripped of all known reference types. More...

Functions
template<typename Ref >
auto	util::referenced_address (Ref &&ref)
	Returns the address of the referenced object. More...
template<typename T >
auto	util::lvalue_reference_into_wrapper (T &&obj)
	Converts a l-value reference object into a std::reference_wrapper. More...
template<typename T >
void	util::staticDumpClassName ()
	Helper to determine the type of a variable at compilation time. More...
template<typename T >
void	util::staticDumpClassName (T)

Variables
template<typename >
constexpr bool	util::always_false_v = false
	A templated constant, always false. More...
template<typename >
constexpr bool	util::always_true_v = true
	A template constant always true. More...
template<typename T , std::size_t StartFrom, typename... Types>
constexpr std::size_t	util::find_next_type_v = find_next_type<T, StartFrom, Types...>::value
template<typename T , typename... Types>
constexpr std::size_t	util::find_type_v = find_type<T, Types...>::value
template<typename T , typename... Types>
constexpr bool	util::is_any_of_v = is_any_of<T, Types...>::value
	Whether T is among the specified Types (see util::is_any_of). More...
template<typename T , typename U >
constexpr auto	util::is_same_decay_v = std::is_same_v<std::decay_t<T>, std::decay_t<U>>
	Whether T and U are the same type, after being applied std::decay. More...
template<template< typename...> typename Template, typename T >
constexpr bool	util::is_instance_of_v = is_instance_of<Template, T>::value
template<typename T >
constexpr bool	util::is_STLarray_v = is_STLarray<T>::value
	A constant describing whether the specified type is a STL array. More...
template<typename T >
constexpr bool	util::is_reference_wrapper_v = is_reference_wrapper<T>::value
	A constant describing whether the specified type is a std::reference_wrapper. More...
template<typename T >
constexpr bool	util::is_unique_ptr_v = is_unique_ptr<T>::value
	A constant describing whether the specified type is a std::unique_ptr. More...
template<typename T >
constexpr bool	util::is_character_type_v = is_character_type<T>::value
	Whether type T is a character type (see util::is_character_type). More...
template<typename T >
constexpr bool	util::is_string_type_v = is_string_type<T>::value
	Whether type T is a character string type (see util::is_string_type). More...
template<typename T >
constexpr bool	util::is_basic_string_type_v = is_basic_string_type<T>::value
template<typename T >
constexpr bool	util::is_basic_string_view_type_v = is_basic_string_view_type<T>::value

Detailed Description

Basic C++ metaprogramming utilities.

---

Author

Gianluca Petrillo (petri.nosp@m.llo@.nosp@m.fnal..nosp@m.gov)

Date

January 12, 2017

Definition in file MetaUtils.h.