refl::descriptor::field_descriptor< T, N > Class Template Reference

Represents a reflected field. More...

#include <refl.hpp>

Public Types
typedef member::value_type	value_type
	Type value type of the member. More...

Public Member Functions
template<typename... Args>
constexpr auto	operator() (Args &&... args) const noexcept -> decltype(invoker::invoke(std::forward< Args >(args)...))
	A synonym for get(). More...

Static Public Member Functions
template<decltype(nullptr) = nullptr>
static constexpr decltype(auto)	get () noexcept
	Returns the value of the field. More...
template<typename U >
static constexpr decltype(auto)	get (U &&target) noexcept
	Returns the value of the field. More...

Static Public Attributes
static constexpr bool	is_static { !std::is_member_object_pointer_v<decltype(member::pointer)> }
	Whether the field is static or not. More...
static constexpr bool	is_writable { !std::is_const_v<value_type> }
	Whether the field is const or not. More...
static constexpr auto	pointer { member::pointer }
	A member pointer to the reflected field of the appropriate type. More...

Detailed Description

template<typename T, size_t N>
class refl::descriptor::field_descriptor< T, N >

Represents a reflected field.

Member Typedef Documentation

value_type

template<typename T , size_t N>

typedef member::value_type refl::descriptor::field_descriptor< T, N >::value_type

Type value type of the member.

struct Foo { const int* x; };
REFL_AUTO(type(Foo), field(x))
 
get_t<0, member_list<Foo>>::value_type -> const int*

Member Function Documentation

get() [1/2]

template<typename T , size_t N>

template<decltype(nullptr) = nullptr>

static constexpr decltype(auto) refl::descriptor::field_descriptor< T, N >::get ( )

inlinestaticconstexprnoexcept

Returns the value of the field.

(for static fields).

struct Foo {
  int bar = 1;
  static int baz = 5;
  void foobar(int x) { return x * 2; }
  static void foobaz(int x) { return x * 3; }
};
REFL_AUTO(type(Foo), field(bar), field(baz), func(foobar), func(foobaz))
invoke(get_t<0, member_list<Foo>(), Foo()) -> 1 (Foo().bar)
invoke(get_t<1, member_list<Foo>>()) -> 5 (Foo::baz)
invoke(get_t<2, member_list<Foo>(), Foo(), 10) -> 20 (Foo().foobar())
invoke(get_t<3, member_list<Foo>>()) -> 30 (Foo::foobaz())

get() [2/2]

template<typename T , size_t N>

template<typename U >

static constexpr decltype(auto) refl::descriptor::field_descriptor< T, N >::get ( U &&  target )

inlinestaticconstexprnoexcept

Returns the value of the field.

(for instance fields).

struct Foo {
  int bar = 1;
  static int baz = 5;
  void foobar(int x) { return x * 2; }
  static void foobaz(int x) { return x * 3; }
};
REFL_AUTO(type(Foo), field(bar), field(baz), func(foobar), func(foobaz))
invoke(get_t<0, member_list<Foo>(), Foo()) -> 1 (Foo().bar)
invoke(get_t<1, member_list<Foo>>()) -> 5 (Foo::baz)
invoke(get_t<2, member_list<Foo>(), Foo(), 10) -> 20 (Foo().foobar())
invoke(get_t<3, member_list<Foo>>()) -> 30 (Foo::foobaz())

operator()()

template<typename T , size_t N>

template<typename... Args>

constexpr auto refl::descriptor::field_descriptor< T, N >::operator() ( Args &&...  args ) const -> decltype(invoker::invoke(std::forward<Args>(args)...))

inlineconstexprnoexcept

A synonym for get().

struct Foo {
  int bar = 1;
  static int baz = 5;
  void foobar(int x) { return x * 2; }
  static void foobaz(int x) { return x * 3; }
};
REFL_AUTO(type(Foo), field(bar), field(baz), func(foobar), func(foobaz))
invoke(get_t<0, member_list<Foo>(), Foo()) -> 1 (Foo().bar)
invoke(get_t<1, member_list<Foo>>()) -> 5 (Foo::baz)
invoke(get_t<2, member_list<Foo>(), Foo(), 10) -> 20 (Foo().foobar())
invoke(get_t<3, member_list<Foo>>()) -> 30 (Foo::foobaz())

Member Data Documentation

is_static

template<typename T , size_t N>

constexpr bool refl::descriptor::field_descriptor< T, N >::is_static { !std::is_member_object_pointer_v<decltype(member::pointer)> }

staticconstexpr

Whether the field is static or not.

struct Foo {
  int bar;
  static int baz;
};
REFL_AUTO(type(Foo), field(bar), field(baz))
is_static(get_t<0, member_list<Foo>>()) -> false
is_static(get_t<1, member_list<Foo>>()) -> true

is_writable

template<typename T , size_t N>

constexpr bool refl::descriptor::field_descriptor< T, N >::is_writable { !std::is_const_v<value_type> }

staticconstexpr

Whether the field is const or not.

See also

refl::descriptor::is_const

pointer

template<typename T , size_t N>

constexpr auto refl::descriptor::field_descriptor< T, N >::pointer { member::pointer }

staticconstexpr

A member pointer to the reflected field of the appropriate type.

When the member is a function, the return value might be nullptr if the type of the function pointer cannot be resolved.

See also

is_resolved

can_resolve

resolve

struct Foo {
  int bar;
  static int baz;
};
REFL_AUTO(type(Foo), field(bar), field(baz))
get_pointer(get_t<0, member_list<Foo>>()) -> (int Foo::*) &Foo::bar
get_pointer(get_t<1, member_list<Foo>>()) -> (int*) &Foo::baz

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

• include/refl.hpp