enum_values.hpp File Reference

A compile-time check that a list names every value of an enum, and a parser over the list. More...

#include <array>
#include <cstddef>
#include <limits>
#include <optional>
#include <string_view>
#include <type_traits>

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Namespaces
namespace	algotradelib
	The library: broker-neutral types (core), and the modules below.

Functions
template<typename Enum, std::size_t N, typename IsEnumerator>
constexpr bool	algotradelib::lists_every_value (const std::array< Enum, N > &values, IsEnumerator is_enumerator) noexcept
	Tests whether a list holds every value of an enum exactly once, in any order.
template<typename Enum, std::size_t N, typename IsEnumerator>
constexpr bool	algotradelib::lists_every_value (const Enum(&values)[N], IsEnumerator is_enumerator) noexcept
	Tests whether a list holds every value of an enum exactly once, in any order.
template<typename Enum, std::size_t N, typename Name>
constexpr std::optional< Enum >	algotradelib::value_named (const std::array< Enum, N > &values, Name name, std::string_view text) noexcept
	Returns the value of a list whose name is text, so a parser reads exactly what its writer writes.

Detailed Description

A compile-time check that a list names every value of an enum, and a parser over the list.

The library keeps a list of every value next to several enums (all_venues, all_halt_reasons, ...) and derives counts, parsers and tests from it. Each list is checked with lists_every_value in a static_assert, so a value added to the enum and left out of its list fails to compile. value_named reads a name back through the same list.

Definition in file enum_values.hpp.