mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
459 lines
16 KiB
C++
459 lines
16 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2017 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_COMPRESSED_PAIR_HPP
|
|
#define SPROUT_COMPRESSED_PAIR_HPP
|
|
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/swap.hpp>
|
|
#include <sprout/detail/call_traits.hpp>
|
|
#include <sprout/type_traits/integral_constant.hpp>
|
|
|
|
namespace sprout {
|
|
namespace detail {
|
|
template<typename T1, typename T2, bool IsSame, bool FirstEmpty, bool SecondEmpty>
|
|
struct compressed_pair_switch;
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, false, false, false>
|
|
: public sprout::integral_constant<int, 0>
|
|
{};
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, false, true, false>
|
|
: public sprout::integral_constant<int, 1>
|
|
{};
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, false, false, true>
|
|
: public sprout::integral_constant<int, 2>
|
|
{};
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, false, true, true>
|
|
: public sprout::integral_constant<int, 3>
|
|
{};
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, true, true, true>
|
|
: public sprout::integral_constant<int, 4>
|
|
{};
|
|
template<typename T1, typename T2>
|
|
struct compressed_pair_switch<T1, T2, true, false, false>
|
|
: public sprout::integral_constant<int, 5>
|
|
{};
|
|
|
|
template<typename T1, typename T2, int Version>
|
|
class compressed_pair_impl;
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 0> {
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
private:
|
|
first_type first_;
|
|
second_type second_;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: first_()
|
|
, second_()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_(x)
|
|
, second_(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_(x)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(second_param_type y)
|
|
: second_(y)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return first_;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return first_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return second_;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return second_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl& other)
|
|
SPROUT_NOEXCEPT_IF(
|
|
SPROUT_NOEXCEPT_EXPR(sprout::swap(first_, other.first_))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(second_, other.second_))
|
|
)
|
|
{
|
|
sprout::swap(first_, other.first_);
|
|
sprout::swap(second_, other.second_);
|
|
}
|
|
};
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 1>
|
|
: protected std::remove_cv<T1>::type
|
|
{
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
private:
|
|
second_type second_;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: second_()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_type(x)
|
|
, second_(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_type(x)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(second_param_type y)
|
|
: second_(y)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return second_;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return second_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl& other)
|
|
SPROUT_NOEXCEPT_IF_EXPR(sprout::swap(second_, other.second_))
|
|
{
|
|
sprout::swap(second_, other.second_);
|
|
}
|
|
};
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 2>
|
|
: protected std::remove_cv<T1>::type
|
|
{
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
private:
|
|
first_type first_;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: first_()
|
|
, second_type()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_(x)
|
|
, second_type(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_(x)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(second_param_type y)
|
|
: second_type(y)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return first_;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return first_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl& other)
|
|
SPROUT_NOEXCEPT_IF_EXPR(sprout::swap(first_, other.first_))
|
|
{
|
|
sprout::swap(first_, other.first_);
|
|
}
|
|
};
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 3>
|
|
: protected std::remove_cv<T1>::type
|
|
, protected std::remove_cv<T2>::type
|
|
{
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: first_type()
|
|
, second_type()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_type(x)
|
|
, second_type(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_type(x)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(second_param_type y)
|
|
: second_type(y)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl&) {}
|
|
};
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 4>
|
|
: protected std::remove_cv<T1>::type
|
|
{
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
private:
|
|
second_type second_;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: first_type()
|
|
, second_()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_type(x)
|
|
, second_(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_type(x)
|
|
, second_(x)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return second_;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return second_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl&) {}
|
|
};
|
|
template<typename T1, typename T2>
|
|
class compressed_pair_impl<T1, T2, 5>
|
|
{
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
private:
|
|
first_type first_;
|
|
second_type second_;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair_impl()
|
|
: first_()
|
|
, second_()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x, second_param_type y)
|
|
: first_(x)
|
|
, second_(y)
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair_impl(first_param_type x)
|
|
: first_(x)
|
|
, second_(x)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return first_;
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return first_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return second_;
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return second_;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair_impl& other)
|
|
SPROUT_NOEXCEPT_IF(
|
|
SPROUT_NOEXCEPT_EXPR(sprout::swap(first_, other.first_))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(second_, other.second_))
|
|
)
|
|
{
|
|
sprout::swap(first_, other.first_);
|
|
sprout::swap(second_, other.second_);
|
|
}
|
|
};
|
|
} // namespace detail
|
|
|
|
//
|
|
// compressed_pair
|
|
//
|
|
template<typename T1, typename T2>
|
|
class compressed_pair
|
|
: private sprout::detail::compressed_pair_impl<
|
|
T1, T2,
|
|
sprout::detail::compressed_pair_switch<
|
|
T1, T2,
|
|
std::is_same<typename std::remove_cv<T1>::type, typename std::remove_cv<T2>::type>::value,
|
|
std::is_empty<T1>::value, std::is_empty<T2>::value
|
|
>::value
|
|
>
|
|
{
|
|
private:
|
|
typedef sprout::detail::compressed_pair_impl<
|
|
T1, T2,
|
|
sprout::detail::compressed_pair_switch<
|
|
T1, T2,
|
|
std::is_same<typename std::remove_cv<T1>::type, typename std::remove_cv<T2>::type>::value,
|
|
std::is_empty<T1>::value, std::is_empty<T2>::value
|
|
>::value
|
|
> base_type;
|
|
public:
|
|
typedef T1 first_type;
|
|
typedef T2 second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair()
|
|
: base_type()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair(first_param_type x, second_param_type y)
|
|
: base_type(x, y)
|
|
{}
|
|
explicit SPROUT_CONSTEXPR compressed_pair(first_param_type x)
|
|
: base_type(x)
|
|
{}
|
|
explicit SPROUT_CONSTEXPR compressed_pair(second_param_type y)
|
|
: base_type(y)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return base_type::first();
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return base_type::first();
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return base_type::second();
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return base_type::second();
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair& other) {
|
|
base_type::swap(other);
|
|
}
|
|
};
|
|
template<typename T>
|
|
class compressed_pair<T, T>
|
|
: private sprout::detail::compressed_pair_impl<
|
|
T, T,
|
|
sprout::detail::compressed_pair_switch<
|
|
T, T,
|
|
std::is_same<typename std::remove_cv<T>::type, typename std::remove_cv<T>::type>::value,
|
|
std::is_empty<T>::value, std::is_empty<T>::value
|
|
>::value
|
|
>
|
|
{
|
|
private:
|
|
typedef sprout::detail::compressed_pair_impl<
|
|
T, T,
|
|
sprout::detail::compressed_pair_switch<
|
|
T, T,
|
|
std::is_same<typename std::remove_cv<T>::type, typename std::remove_cv<T>::type>::value,
|
|
std::is_empty<T>::value, std::is_empty<T>::value
|
|
>::value
|
|
> base_type;
|
|
public:
|
|
typedef T first_type;
|
|
typedef T second_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::param_type first_param_type;
|
|
typedef typename sprout::detail::call_traits<second_type>::param_type second_param_type;
|
|
typedef typename sprout::detail::call_traits<first_type>::reference first_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::reference second_reference;
|
|
typedef typename sprout::detail::call_traits<first_type>::const_reference first_const_reference;
|
|
typedef typename sprout::detail::call_traits<second_type>::const_reference second_const_reference;
|
|
public:
|
|
SPROUT_CONSTEXPR compressed_pair()
|
|
: base_type()
|
|
{}
|
|
SPROUT_CONSTEXPR compressed_pair(first_param_type x, second_param_type y)
|
|
: base_type(x, y)
|
|
{}
|
|
explicit SPROUT_CONSTEXPR compressed_pair(first_param_type x)
|
|
: base_type(x)
|
|
{}
|
|
SPROUT_CXX14_CONSTEXPR first_reference first() {
|
|
return base_type::first();
|
|
}
|
|
SPROUT_CONSTEXPR first_const_reference first() const {
|
|
return base_type::first();
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR second_reference second() {
|
|
return base_type::second();
|
|
}
|
|
SPROUT_CONSTEXPR second_const_reference second() const {
|
|
return base_type::second();
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(compressed_pair& other) {
|
|
base_type::swap(other);
|
|
}
|
|
};
|
|
//
|
|
// swap
|
|
//
|
|
template<typename T1, typename T2>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
swap(sprout::compressed_pair<T1, T2>& lhs, sprout::compressed_pair<T1, T2>& rhs)
|
|
SPROUT_NOEXCEPT_IF_EXPR(lhs.swap(rhs))
|
|
{
|
|
lhs.swap(rhs);
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_COMPRESSED_PAIR_HPP
|