fcppt::cast Namespace Reference

Cast helpers which provide more type information or do additional checks. More...

Classes
struct	dynamic_any_fun
	Function object that uses fcppt::cast::dynamic_any. More...
struct	dynamic_cross_fun
	Function object that uses fcppt::cast::dynamic_cross. More...
struct	dynamic_fun
	Function object that uses fcppt::cast::dynamic. More...
struct	float_to_int_fun
	Function object of fcppt::cast::float_to_int. More...
struct	int_to_enum_fun
	Function object of fcppt::cast::int_to_enum. More...
struct	int_to_float_fun
	Function object of fcppt::cast::int_to_float. More...
struct	size_fun
	Function object of fcppt::cast::size. More...
struct	static_cast_fun
	Function object that does a static_cast. More...
struct	to_signed_fun
	Function object of fcppt::cast::to_signed. More...
struct	to_unsigned_fun
	Function object of fcppt::cast::to_unsigned. More...

Typedefs
template<typename Type >
using	promote_int_type = typename fcppt::cast::detail::promote_int_type<Type>::type
	The promoted type of an integral type.

Functions
template<typename Fun , typename Res , typename Src >
constexpr decltype(auto)	apply (Src &&_src)
	Applies a cast to a source.
template<typename Derived , typename Base > requires (fcppt::type_traits::is_base_of<std::remove_cv_t<Base>, std::remove_cv_t<Derived>>::value)
fcppt::optional::reference< Derived >	dynamic (Base &_base) noexcept
	Converts between references of related types using dynamic_cast, returning an empty optional on failure.
template<typename Derived , typename Base >
fcppt::optional::reference< Derived >	dynamic_any (Base &_base) noexcept
	Converts between references using dynamic_cast, returning an empty optional on failure.
template<typename Dest , typename Src >
fcppt::optional::reference< Dest >	dynamic_cross (Src &_src) noexcept
	Tries a dynamic_cast on unrelated types, returning an empty optional on failure.
template<typename Dest , typename Enum > requires (std::is_integral_v<Dest> && std::is_enum_v<Enum>)
constexpr Dest	enum_to_int (Enum const _enum) noexcept
	Converts an enum to an int.
template<typename Enum > requires std::is_enum_v<Enum>
constexpr std::underlying_type_t< Enum >	enum_to_underlying (Enum const _enum) noexcept
	Converts an enum to its underlying type.
template<typename Dest , typename Source > requires (std::is_floating_point_v<Source> && std::is_signed_v<Dest>)
constexpr Dest	float_to_int (Source const _source) noexcept
	Converts a float to a signed int.
template<typename Dest , typename Source >
Dest	from_void_ptr (Source *const _ptr) noexcept
	Converts a void pointer to a different pointer.
template<typename Enum , typename Source > requires (std::is_enum_v<Enum> && std::is_integral_v<Source>)
constexpr Enum	int_to_enum (Source const _source) noexcept
	Converts an int to an enum.
template<typename Dest , typename Source > requires (std::is_integral_v<Source> && std::is_floating_point_v<Dest>)
constexpr Dest	int_to_float (Source const _source) noexcept
	Converts an int to a float.
template<typename Type >
constexpr fcppt::cast::promote_int_type< Type >	promote_int (Type const &_value)
	Promotes an integral type to int or unsigned int.
template<typename Dest , typename Source > requires ( sizeof(Dest) >= sizeof(Source) && (std::is_same_v<Dest, Source> || (std::is_floating_point_v<Dest> && std::is_floating_point_v<Source>) || (std::is_integral_v<Dest> && std::is_integral_v<Source> && std::is_signed_v<Dest> == std::is_signed_v<Source>)))
constexpr Dest	safe_numeric (Source const &_source) noexcept
	Safe numeric cast is a safer static_cast that forbids lossy conversions.
template<typename Dest , typename Source > requires ( std::is_floating_point_v<Dest> == std::is_floating_point_v<Source> || std::is_signed_v<Dest> == std::is_signed_v<Source> || std::is_unsigned_v<Dest> == std::is_unsigned_v<Source>)
constexpr Dest	size (Source const _source) noexcept
	Converts a type to a similar type of different size.
template<typename Derived , typename Base > requires ( std::is_reference_v<Derived> && fcppt::type_traits::is_base_of<std::remove_cv_t<Base>, std::remove_cvref_t<Derived>>::value)
Derived	static_downcast (Base &_source) noexcept
	Statically converts a reference to a base class to a reference to a derived class.
template<typename Dest , typename Source >
Dest	to_char_ptr (Source *const _source) noexcept
	Converts a pointer to a pointer to characters.
template<typename Type > requires std::is_unsigned_v<Type>
constexpr std::make_signed_t< Type >	to_signed (Type const _value) noexcept
	Converts an unsigned int to its signed type.
template<typename Source >
std::uintptr_t	to_uint_ptr (Source *const _ptr) noexcept
	Converts a pointer to a std::uintptr_t.
template<typename Type > requires std::is_signed_v<Type>
constexpr std::make_unsigned_t< Type >	to_unsigned (Type const _value) noexcept
	Converts a signed int to its unsigned type.
template<typename Type >
void	to_void (Type const &_value) noexcept
	Casts an expression to void.
template<typename Source >
void const *	to_void_ptr (Source const *const _ptr) noexcept
	Converts a pointer to const to a pointer to const void.
template<typename Source >
void *	to_void_ptr (Source *const _ptr) noexcept
	Converts a pointer to a pointer to void.
template<typename Dest , typename Source > requires (std::conjunction_v<std::is_integral<Source>, std::is_integral<Dest>>)
fcppt::optional::object< Dest >	truncation_check (Source const _source)
	Cast between integral types, checking for truncation.

Detailed Description

Cast helpers which provide more type information or do additional checks.