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Added lots of small utilities

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Daniel
2021-02-04 01:56:39 +01:00
parent 882383f762
commit b462eab362
9 changed files with 509 additions and 0 deletions
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42
include/cppoverloadutils.h Normal file
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#pragma once
namespace cpputils {
template <typename... Args>
struct CppNonConstOverload
{
template <typename R, typename T>
constexpr auto operator()(R (T::*ptr)(Args...)) const noexcept -> decltype(ptr)
{ return ptr; }
template <typename R, typename T>
static constexpr auto of(R (T::*ptr)(Args...)) noexcept -> decltype(ptr)
{ return ptr; }
};
template <typename... Args>
struct CppConstOverload
{
template <typename R, typename T>
constexpr auto operator()(R (T::*ptr)(Args...) const) const noexcept -> decltype(ptr)
{ return ptr; }
template <typename R, typename T>
static constexpr auto of(R (T::*ptr)(Args...) const) noexcept -> decltype(ptr)
{ return ptr; }
};
template <typename... Args>
struct CppOverload : CppConstOverload<Args...>, CppNonConstOverload<Args...>
{
using CppConstOverload<Args...>::of;
using CppConstOverload<Args...>::operator();
using CppNonConstOverload<Args...>::of;
using CppNonConstOverload<Args...>::operator();
template <typename R>
constexpr auto operator()(R (*ptr)(Args...)) const noexcept -> decltype(ptr)
{ return ptr; }
template <typename R>
static constexpr auto of(R (*ptr)(Args...)) noexcept -> decltype(ptr)
{ return ptr; }
};
template <typename... Args> constexpr __attribute__((__unused__)) CppOverload<Args...> cppOverload = {};
template <typename... Args> constexpr __attribute__((__unused__)) CppConstOverload<Args...> cppConstOverload = {};
template <typename... Args> constexpr __attribute__((__unused__)) CppNonConstOverload<Args...> cppNonConstOverload = {};
} // namespace cpputils