mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
add exempt_ptr
This commit is contained in:
bolero-MURAKAMI
parent
61dd3351fc
commit
2342ac6433
2 changed files with 250 additions and 0 deletions
249
sprout/exempt_ptr.hpp
Normal file
249
sprout/exempt_ptr.hpp
Normal file
|
|
@ -0,0 +1,249 @@
|
|||
/*=============================================================================
|
||||
Copyright (c) 2011-2014 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_EXEMPT_PTR_HPP
|
||||
#define SPROUT_EXEMPT_PTR_HPP
|
||||
|
||||
#include <cstddef>
|
||||
#include <functional>
|
||||
#include <iterator>
|
||||
#include <type_traits>
|
||||
#include <utility>
|
||||
#include <sprout/config.hpp>
|
||||
|
||||
namespace sprout {
|
||||
//
|
||||
// exempt_ptr
|
||||
//
|
||||
template<typename T>
|
||||
class exempt_ptr {
|
||||
public:
|
||||
typedef T value_type;
|
||||
typedef T* pointer;
|
||||
typedef T const* const_pointer;
|
||||
typedef T& reference;
|
||||
typedef T const& const_reference;
|
||||
typedef std::ptrdiff_t difference_type;
|
||||
typedef std::random_access_iterator_tag iterator_category;
|
||||
private:
|
||||
pointer p_;
|
||||
private:
|
||||
template<typename P>
|
||||
static SPROUT_CONSTEXPR bool is_compat() {
|
||||
return std::is_convertible<P*, pointer>::value;
|
||||
}
|
||||
public:
|
||||
SPROUT_CONSTEXPR exempt_ptr() SPROUT_NOEXCEPT
|
||||
: p_()
|
||||
{}
|
||||
SPROUT_CONSTEXPR exempt_ptr(std::nullptr_t) SPROUT_NOEXCEPT
|
||||
: exempt_ptr()
|
||||
{}
|
||||
explicit SPROUT_CONSTEXPR exempt_ptr(pointer other) SPROUT_NOEXCEPT
|
||||
: p_(other)
|
||||
{}
|
||||
template<
|
||||
typename U,
|
||||
typename sprout::enabler_if<std::is_convertible<U*, pointer>::value>::type = sprout::enabler
|
||||
>
|
||||
explicit SPROUT_CONSTEXPR exempt_ptr(U* other) SPROUT_NOEXCEPT
|
||||
: p_(other)
|
||||
{}
|
||||
template<
|
||||
typename U,
|
||||
typename sprout::enabler_if<std::is_convertible<U*, pointer>::value>::type = sprout::enabler
|
||||
>
|
||||
SPROUT_CONSTEXPR exempt_ptr(sprout::exempt_ptr<U> const& other) SPROUT_NOEXCEPT
|
||||
: p_(other.get())
|
||||
{}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr&
|
||||
operator=(std::nullptr_t) SPROUT_NOEXCEPT {
|
||||
reset();
|
||||
return *this;
|
||||
}
|
||||
template<
|
||||
typename U,
|
||||
typename sprout::enabler_if<std::is_convertible<U*, pointer>::value>::type = sprout::enabler
|
||||
>
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr&
|
||||
operator=(U* other) SPROUT_NOEXCEPT {
|
||||
reset(other);
|
||||
return *this;
|
||||
}
|
||||
template<
|
||||
typename U,
|
||||
typename sprout::enabler_if<std::is_convertible<U*, pointer>::value>::type = sprout::enabler
|
||||
>
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr&
|
||||
operator=(exempt_ptr<U> const& other) SPROUT_NOEXCEPT {
|
||||
reset(other.get());
|
||||
return *this;
|
||||
}
|
||||
SPROUT_CONSTEXPR pointer
|
||||
get() const SPROUT_NOEXCEPT {
|
||||
return p_;
|
||||
}
|
||||
SPROUT_CONSTEXPR reference
|
||||
operator*() const SPROUT_NOEXCEPT {
|
||||
return *get();
|
||||
}
|
||||
SPROUT_CONSTEXPR pointer
|
||||
operator->() const SPROUT_NOEXCEPT {
|
||||
return get();
|
||||
}
|
||||
SPROUT_EXPLICIT_CONVERSION SPROUT_CONSTEXPR operator bool() const SPROUT_NOEXCEPT {
|
||||
return get();
|
||||
}
|
||||
SPROUT_CONSTEXPR operator pointer() SPROUT_NOEXCEPT {
|
||||
return get();
|
||||
}
|
||||
SPROUT_CONSTEXPR operator const_pointer() const SPROUT_NOEXCEPT {
|
||||
return get();
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR pointer
|
||||
release() SPROUT_NOEXCEPT {
|
||||
pointer old = get();
|
||||
reset();
|
||||
return old;
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR void
|
||||
reset(pointer t = 0) SPROUT_NOEXCEPT {
|
||||
p_ = t;
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR void
|
||||
swap(exempt_ptr& other) SPROUT_NOEXCEPT {
|
||||
swap(p_, other.p_);
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr&
|
||||
operator++() {
|
||||
++p_;
|
||||
return *this;
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr&
|
||||
operator--() {
|
||||
--p_;
|
||||
return *this;
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr operator++(int) {
|
||||
pointer tmp = p_; ++p_; return exempt_ptr{tmp};
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr operator--(int) {
|
||||
pointer tmp = p_; --p_; return exempt_ptr{tmp};
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr
|
||||
operator+() const {
|
||||
return *this; }
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr
|
||||
operator+(std::ptrdiff_t d) const {
|
||||
return exempt_ptr{p_+d};
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR exempt_ptr
|
||||
operator-(std::ptrdiff_t d) const {
|
||||
return exempt_ptr{p_-d};
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR value_type&
|
||||
operator[](std::ptrdiff_t k) {
|
||||
return p_[k];
|
||||
}
|
||||
SPROUT_CXX14_CONSTEXPR value_type const&
|
||||
operator[](std::ptrdiff_t k) const {
|
||||
return p_[k];
|
||||
}
|
||||
};
|
||||
//
|
||||
// swap
|
||||
//
|
||||
template<typename T>
|
||||
inline SPROUT_CXX14_CONSTEXPR void
|
||||
swap(sprout::exempt_ptr<T>& x, sprout::exempt_ptr<T>& y) SPROUT_NOEXCEPT {
|
||||
x.swap(y);
|
||||
}
|
||||
//
|
||||
// make_exempt
|
||||
//
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR sprout::exempt_ptr<T>
|
||||
make_exempt(T* p) SPROUT_NOEXCEPT {
|
||||
return sprout::exempt_ptr<T>(p);
|
||||
}
|
||||
//
|
||||
// operator==
|
||||
// operator!=
|
||||
//
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator==(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) SPROUT_NOEXCEPT {
|
||||
return x.get() == y.get();
|
||||
}
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator!=(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) SPROUT_NOEXCEPT {
|
||||
return !(x == y);
|
||||
}
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator==(sprout::exempt_ptr<T> const& x, std::nullptr_t y) SPROUT_NOEXCEPT {
|
||||
return x.get() == y;
|
||||
}
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator!=(sprout::exempt_ptr<T> const& x, std::nullptr_t y) SPROUT_NOEXCEPT {
|
||||
return !(x == y);
|
||||
}
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator==(std::nullptr_t x, sprout::exempt_ptr<T> const& y) SPROUT_NOEXCEPT {
|
||||
return x == y.get();
|
||||
}
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator!=(std::nullptr_t x, sprout::exempt_ptr<T> const& y) SPROUT_NOEXCEPT {
|
||||
return !(x == y);
|
||||
}
|
||||
//
|
||||
// operator<
|
||||
// operator>
|
||||
// operator=<
|
||||
// operator=>
|
||||
//
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator<(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) {
|
||||
return x.get() < y.get();
|
||||
}
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator>(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) {
|
||||
return y < x;
|
||||
}
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator<=(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) {
|
||||
return !(y < x);
|
||||
}
|
||||
template<typename T, typename U>
|
||||
inline SPROUT_CONSTEXPR bool
|
||||
operator>=(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<U> const& y) {
|
||||
return !(x < y);
|
||||
}
|
||||
//
|
||||
// operator+
|
||||
// operator-
|
||||
//
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR sprout::exempt_ptr<T>
|
||||
operator+(std::ptrdiff_t d, sprout::exempt_ptr<T> const& p) {
|
||||
return p + d;
|
||||
}
|
||||
template<typename T>
|
||||
inline SPROUT_CONSTEXPR std::ptrdiff_t
|
||||
operator-(sprout::exempt_ptr<T> const& x, sprout::exempt_ptr<T> const& y) {
|
||||
return x.get() - y.get();
|
||||
}
|
||||
} // namespace sprout
|
||||
|
||||
#endif // #ifndef SPROUT_EXEMPT_PTR_HPP
|
||||
|
|
@ -36,6 +36,7 @@
|
|||
#include <sprout/cwctype.hpp>
|
||||
#include <sprout/darkroom.hpp>
|
||||
#include <sprout/endian_traits.hpp>
|
||||
#include <sprout/exempt_ptr.hpp>
|
||||
#include <sprout/functional.hpp>
|
||||
#include <sprout/generator.hpp>
|
||||
#include <sprout/index_tuple.hpp>
|
||||
|
|
|
|||
Loading…
Reference in a new issue