GCC Code Coverage Report

Line	Branch	Exec	Source
1			//==================================================================================================
2			/*
3			KUMI - Compact Tuple Tools
4			Copyright : KUMI Project Contributors
5			SPDX-License-Identifier: BSL-1.0
6			*/
7			//==================================================================================================
8			#pragma once
9
10			namespace kumi
11			{
12			namespace _
13			{
14			enum class Binding
15			{
16			front,
17			back
18			};
19
20			template<Binding D, typename F, typename... Bound>
21			struct bind_t : leaf<static_cast<std::size_t>(-1), F>,
22			make_binder_t<std::make_index_sequence<sizeof...(Bound)>, Bound...>
23			{
24			static constexpr auto function_index = static_cast<std::size_t>(-1);
25			static constexpr auto seq = std::make_index_sequence<sizeof...(Bound)>{};
26
27			using binder_t = make_binder_t<std::make_index_sequence<sizeof...(Bound)>, Bound...>;
28			using func_t = leaf<function_index, F>;
29
30		848	template<typename... Args> KUMI_HIDDEN_ABI constexpr decltype(auto) operator()(Args&&... args) &
31			{
32		848	return impl(seq, *this, KUMI_FWD(args)...);
33			}
34
35		272	template<typename... Args> KUMI_HIDDEN_ABI constexpr decltype(auto) operator()(Args&&... args) const&
36			{
37		272	return impl(seq, *this, KUMI_FWD(args)...);
38			}
39
40			template<typename... Args> KUMI_HIDDEN_ABI constexpr decltype(auto) operator()(Args&&... args) &&
41			{
42			return impl(seq, std::move(*this), KUMI_FWD(args)...);
43			}
44
45			template<typename... Args> KUMI_HIDDEN_ABI constexpr decltype(auto) operator()(Args&&... args) const&&
46			{
47			return impl(seq, std::move(*this), KUMI_FWD(args)...);
48			}
49
50			template<std::size_t... Is, typename Self, typename... Args>
51		1120	KUMI_HIDDEN_ABI static constexpr decltype(auto) impl(std::index_sequence<Is...>, Self&& s, Args&&... args)
52			{
53			if constexpr (D == Binding::front)
54			{
55		336	return kumi::invoke(KUMI_FWD(s).func_t::operator()(std::integral_constant<size_t, function_index>{}),
56			KUMI_FWD(s).binder_t::operator()(std::integral_constant<std::size_t, Is>{})...,
57		336	KUMI_FWD(args)...);
58			}
59			else
60			{
61		784	return kumi::invoke(KUMI_FWD(s).func_t::operator()(std::integral_constant<size_t, function_index>{}),
62			KUMI_FWD(args)...,
63		784	KUMI_FWD(s).binder_t::operator()(std::integral_constant<std::size_t, Is>{})...);
64			}
65			}
66			};
67			}
68
69			//====================================================================================================================
70			/**
71			@ingroup kumi_functional
72			@brief Returns a callable object with `ts` bound as its leading arguments, reducing `c` arity.
73
74			@param c Callable object to be bound.
75			@param ts Elements to be bound as the leading arguments of `c`.
76			@return A callable object of lower arity invoking `c` with `ts` prefilled at the front.
77
78			@note Replaces std::bind_front to avoid depending on `functional`.
79			**/
80			//====================================================================================================================
81			template<typename C, typename... Ts>
82			KUMI_ABI constexpr auto bind_front(C&& c, Ts&&... ts)
83			noexcept(std::is_nothrow_move_constructible_v<std::decay_t<C>> &&
84			(std::is_nothrow_move_constructible_v<std::decay_t<Ts>> && ...))
85			requires(std::is_move_constructible_v<std::decay_t<C>> && (std::is_move_constructible_v<std::decay_t<Ts>> && ...))
86			{
87		168	return kumi::_::bind_t<kumi::_::Binding::front, std::decay_t<C>, std::decay_t<Ts>...>{KUMI_FWD(c), KUMI_FWD(ts)...};
88			}
89
90			//====================================================================================================================
91			/**
92			@ingroup kumi_functional
93			@brief Returns a callable object with `ts` bound as its trailing arguments, reducing `c` arity.
94
95			@param c Callable object to be bound.
96			@param ts Elements to be bound as the trailing arguments of `c`.
97			@return A callable object of lower arity invoking `c` with `ts` prefilled at the back.
98
99			@note Replaces std::bind_back to avoid depending on `functional`.
100			**/
101			//====================================================================================================================
102			template<typename C, typename... Ts>
103			KUMI_ABI constexpr auto bind_back(C&& c, Ts&&... ts)
104			noexcept(std::is_nothrow_move_constructible_v<std::decay_t<C>> &&
105			(std::is_nothrow_move_constructible_v<std::decay_t<Ts>> && ...))
106			requires(std::is_move_constructible_v<std::decay_t<C>> && (std::is_move_constructible_v<std::decay_t<Ts>> && ...))
107			{
108		405	return kumi::_::bind_t<kumi::_::Binding::back, std::decay_t<C>, std::decay_t<Ts>...>{KUMI_FWD(c), KUMI_FWD(ts)...};
109			}
110
111			template<typename C, typename... Ts>
112			KUMI_ABI constexpr auto bind(C&& c, Ts&&... ts)
113			noexcept(std::is_nothrow_move_constructible_v<std::decay_t<C>> &&
114			(std::is_nothrow_move_constructible_v<std::decay_t<Ts>> && ...))
115			requires(std::is_move_constructible_v<std::decay_t<C>> && (std::is_move_constructible_v<std::decay_t<Ts>> && ...))
116			{
117			return kumi::_::bind_t<kumi::_::Binding::front, std::decay_t<C>, std::decay_t<Ts>...>{KUMI_FWD(c), KUMI_FWD(ts)...};
118			}
119			}
120