rpnx::variant_detail< Allocator > Class Template Reference

Allocator-aware erased operations used by basic_variant. More...

#include <variant.hpp>

Classes
class	is_supported_variant
class	is_supported_variant< basic_variant< Allocator2, Ts... > >
struct	variant_info
	Erased operation table for a single variant alternative. More...

Public Types
using	default_new_func = void* (*)(Allocator&)
	Allocates and default-constructs one erased alternative.
using	copy_func = void* (*)(Allocator&, void const*)
	Allocates and copy-constructs one erased alternative.
using	delete_func = void (*)(Allocator&, void*) noexcept
	Destroys and deallocates one erased alternative.
using	less_func = bool (*)(void const*, void const*)
	Less-than comparison operation for one alternative type.
using	equals_func = bool (*)(void const*, void const*)
	Equality comparison operation for one alternative type.
using	three_way_func = std::strong_ordering (*)(void const*, void const*)
	Strong three-way comparison operation for one alternative type.
using	new_move_from_func = void* (*)(Allocator&, void*)
	Allocates an alternative by moving from erased storage.

Static Public Member Functions
template<typename T>
static constexpr variant_info	make_variant_info ()
	Builds the erased operation table for an alternative.

Detailed Description

template<typename Allocator>
class rpnx::variant_detail< Allocator >

Allocator-aware erased operations used by basic_variant.

The table produced by this class records allocation, lifetime, type, and comparison operations for one alternative. It is exposed so template instantiations can share metadata; applications normally use basic_variant rather than this implementation support type.

Template Parameters

Allocator

Allocator carried by the associated variant.

Member Function Documentation

make_variant_info()

template<typename Allocator>

template<typename T>

static constexpr variant_info rpnx::variant_detail< Allocator >::make_variant_info ( )

inlinestaticconstexpr

Builds the erased operation table for an alternative.

Template Parameters

T	Alternative type represented by the table.

Returns

Operation table whose entries act on T objects.

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

• include/rpnx/variant.hpp