mirror/Sprout
1
0
Fork 0
mirror of https://github.com/bolero-MURAKAMI/Sprout.git synced 2024-11-14 10:39:05 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
Sprout/sprout/container/container_range_traits.hpp
bolero-MURAKAMI 3029507c05 change copyright
2015-01-10 19:13:57 +09:00

555 lines
20 KiB
C++
Raw Blame History

/*=============================================================================
Copyright (c) 2011-2015 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_CONTAINER_CONTAINER_RANGE_TRAITS_HPP
#define SPROUT_CONTAINER_CONTAINER_RANGE_TRAITS_HPP
#include <utility>
#include <type_traits>
#include <sprout/workaround/std/cstddef.hpp>
#include <sprout/config.hpp>
#include <sprout/type_traits/integral_constant.hpp>
#include <sprout/type_traits/identity.hpp>
#include <sprout/container/traits_fwd.hpp>
#include <sprout/container/container_traits.hpp>
#include <sprout/container/range_functions_fwd.hpp>
#include <sprout/container/begin.hpp>
#include <sprout/container/end.hpp>
#include <sprout/container/size.hpp>
#include <sprout/iterator/operation.hpp>
namespace sprout {
//
// container_range_traits
//
namespace detail {
template<typename T>
struct has_mem_size_test {
public:
template<
typename U = T,
typename = typename sprout::identity<decltype(std::declval<U>().size())>::type
>
static sprout::true_type test(int);
static sprout::false_type test(...);
};
#if defined(_MSC_VER)
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_size_test<T>::test(0))>::type>
struct has_mem_size
: public Base_
{};
#else
template<typename T>
struct has_mem_size
: public sprout::identity<decltype(sprout::detail::has_mem_size_test<T>::test(0))>::type
{};
#endif
template<typename Container, typename = void>
struct container_range_traits_range_size_impl;
template<typename Container>
struct container_range_traits_range_size_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_size<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::size_type
range_size(Container const& cont) {
return cont.size();
}
};
template<typename Container>
struct container_range_traits_range_size_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_size<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::size_type
range_size(Container const& cont) {
return sprout::distance(sprout::begin(cont), sprout::end(cont));
}
};
template<typename T>
struct has_mem_empty_test {
public:
template<
typename U = T,
typename = typename sprout::identity<decltype(std::declval<U>().empty())>::type
>
static sprout::true_type test(int);
static sprout::false_type test(...);
};
#if defined(_MSC_VER)
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_empty_test<T>::test(0))>::type>
struct has_mem_empty
: public Base_
{};
#else
template<typename T>
struct has_mem_empty
: public sprout::identity<decltype(sprout::detail::has_mem_empty_test<T>::test(0))>::type
{};
#endif
template<typename Container, typename = void>
struct container_range_traits_range_empty_impl;
template<typename Container>
struct container_range_traits_range_empty_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_empty<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR bool
range_empty(Container const& cont) {
return cont.empty();
}
};
template<typename Container>
struct container_range_traits_range_empty_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_empty<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR bool
range_empty(Container const& cont) {
return sprout::size(cont) == 0;
}
};
template<typename T>
struct has_mem_front_test {
public:
template<
typename U = T,
typename = typename sprout::identity<decltype(std::declval<U>().front())>::type
>
static sprout::true_type test(int);
static sprout::false_type test(...);
};
#if defined(_MSC_VER)
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_front_test<T>::test(0))>::type>
struct has_mem_front
: public Base_
{};
#else
template<typename T>
struct has_mem_front
: public sprout::identity<decltype(sprout::detail::has_mem_front_test<T>::test(0))>::type
{};
#endif
template<typename Container, typename = void>
struct container_range_traits_range_front_impl;
template<typename Container>
struct container_range_traits_range_front_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_front<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_front(Container& cont) {
return cont.front();
}
};
template<typename Container>
struct container_range_traits_range_front_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_front<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_front(Container& cont) {
return *sprout::begin(cont);
}
};
template<typename Container, typename = void>
struct container_range_traits_range_front_const_impl;
template<typename Container>
struct container_range_traits_range_front_const_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_front<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_front(Container const& cont) {
return cont.front();
}
};
template<typename Container>
struct container_range_traits_range_front_const_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_front<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_front(Container const& cont) {
return *sprout::begin(cont);
}
};
template<typename T>
struct has_mem_back_test {
public:
template<
typename U = T,
typename = typename sprout::identity<decltype(std::declval<U>().back())>::type
>
static sprout::true_type test(int);
static sprout::false_type test(...);
};
#if defined(_MSC_VER)
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_back_test<T>::test(0))>::type>
struct has_mem_back
: public Base_
{};
#else
template<typename T>
struct has_mem_back
: public sprout::identity<decltype(sprout::detail::has_mem_back_test<T>::test(0))>::type
{};
#endif
template<typename Container, typename = void>
struct container_range_traits_range_back_impl;
template<typename Container>
struct container_range_traits_range_back_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_back<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_back(Container& cont) {
return cont.back();
}
};
template<typename Container>
struct container_range_traits_range_back_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_back<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_back(Container& cont) {
return *sprout::prev(sprout::end(cont));
}
};
template<typename Container, typename = void>
struct container_range_traits_range_back_const_impl;
template<typename Container>
struct container_range_traits_range_back_const_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_back<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_back(Container const& cont) {
return cont.back();
}
};
template<typename Container>
struct container_range_traits_range_back_const_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_back<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_back(Container const& cont) {
return *sprout::prev(sprout::end(cont));
}
};
template<typename T>
struct has_mem_at_test {
public:
template<
typename U = T,
typename = typename sprout::identity<decltype(std::declval<U>().at(std::declval<typename sprout::container_traits<U>::size_type>()))>::type
>
static sprout::true_type test(int);
static sprout::false_type test(...);
};
#if defined(_MSC_VER)
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_at_test<T>::test(0))>::type>
struct has_mem_at
: public Base_
{};
#else
template<typename T>
struct has_mem_at
: public sprout::identity<decltype(sprout::detail::has_mem_at_test<T>::test(0))>::type
{};
#endif
template<typename Container, typename = void>
struct container_range_traits_range_at_impl;
template<typename Container>
struct container_range_traits_range_at_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_at<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_at(Container& cont, typename sprout::container_traits<Container>::size_type i) {
return cont.at(i);
}
};
template<typename Container>
struct container_range_traits_range_at_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_at<Container>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::reference
range_at(Container& cont, typename sprout::container_traits<Container>::size_type i) {
return *sprout::next(sprout::begin(cont), i);
}
};
template<typename Container, typename = void>
struct container_range_traits_range_at_const_impl;
template<typename Container>
struct container_range_traits_range_at_const_impl<
Container,
typename std::enable_if<sprout::detail::has_mem_at<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_at(Container const& cont, typename sprout::container_traits<Container const>::size_type i) {
return cont.at(i);
}
};
template<typename Container>
struct container_range_traits_range_at_const_impl<
Container,
typename std::enable_if<!sprout::detail::has_mem_at<Container const>::value>::type
> {
public:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_at(Container const& cont, typename sprout::container_traits<Container const>::size_type i) {
return *sprout::next(sprout::begin(cont), i);
}
};
//
// container_range_traits_default
//
template<typename Container>
struct container_range_traits_default
: public sprout::detail::container_range_traits_range_size_impl<Container>
, public sprout::detail::container_range_traits_range_empty_impl<Container>
, public sprout::detail::container_range_traits_range_front_impl<Container>
, public sprout::detail::container_range_traits_range_front_const_impl<Container>
, public sprout::detail::container_range_traits_range_back_impl<Container>
, public sprout::detail::container_range_traits_range_back_const_impl<Container>
, public sprout::detail::container_range_traits_range_at_impl<Container>
, public sprout::detail::container_range_traits_range_at_const_impl<Container>
{
using sprout::detail::container_range_traits_range_front_impl<Container>::range_front;
using sprout::detail::container_range_traits_range_front_const_impl<Container>::range_front;
using sprout::detail::container_range_traits_range_back_impl<Container>::range_back;
using sprout::detail::container_range_traits_range_back_const_impl<Container>::range_back;
using sprout::detail::container_range_traits_range_at_impl<Container>::range_at;
using sprout::detail::container_range_traits_range_at_const_impl<Container>::range_at;
public:
// iterators:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::iterator
range_begin(Container& cont) {
return cont.begin();
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::iterator
range_begin(Container const& cont) {
return cont.begin();
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::iterator
range_end(Container& cont) {
return cont.end();
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::iterator
range_end(Container const& cont) {
return cont.end();
}
// data access:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container>::pointer
range_data(Container& cont) {
return cont.data();
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
range_data(Container const& cont) {
return cont.data();
}
};
//
// container_range_traits_const_default
//
template<typename Container>
struct container_range_traits_const_default {
public:
// iterators:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::iterator
range_begin(Container const& cont) {
return sprout::container_range_traits<Container>::range_begin(cont);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::iterator
range_end(Container const& cont) {
return sprout::container_range_traits<Container>::range_end(cont);
}
// capacity:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::size_type
range_size(Container const& cont) {
return sprout::container_range_traits<Container>::range_size(cont);
}
static SPROUT_CONSTEXPR bool
range_empty(Container const& cont) {
return sprout::container_range_traits<Container>::range_empty(cont);
}
// element access:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_front(Container const& cont) {
return sprout::container_range_traits<Container>::range_front(cont);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_back(Container const& cont) {
return sprout::container_range_traits<Container>::range_back(cont);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::reference
range_at(Container const& cont, typename sprout::container_traits<Container const>::size_type i) {
return sprout::container_range_traits<Container>::range_at(cont, i);
}
// data access:
static SPROUT_CONSTEXPR typename sprout::container_traits<Container const>::pointer
range_data(Container const& cont) {
return sprout::container_range_traits<Container>::range_data(cont);
}
};
} // namespace detail
//
// container_range_traits
//
template<typename Container>
struct container_range_traits
: public sprout::detail::container_range_traits_default<Container>
{};
template<typename Container>
struct container_range_traits<Container const>
: public sprout::detail::container_range_traits_const_default<Container>
{};
template<typename T, std::size_t N>
struct container_range_traits<T[N]> {
public:
// iterators:
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::iterator
range_begin(T (& arr)[N]) {
typedef typename sprout::container_traits<T[N]>::iterator type;
return type(arr);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::iterator
range_begin(T const (& arr)[N]) {
typedef typename sprout::container_traits<T const[N]>::iterator type;
return type(arr);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::iterator
range_end(T (& arr)[N]) {
typedef typename sprout::container_traits<T[N]>::iterator type;
return type(arr) + N;
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::iterator
range_end(T const (& arr)[N]) {
typedef typename sprout::container_traits<T const[N]>::iterator type;
return type(arr) + N;
}
// capacity:
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::size_type
range_size(T const (&)[N]) {
return N;
}
static SPROUT_CONSTEXPR bool
range_empty(T const (&)[N]) {
return false;
}
// element access:
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::reference
range_front(T (& arr)[N]) {
return arr[0];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_front(T const (& arr)[N]) {
return arr[0];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::reference
range_back(T (& arr)[N]) {
return arr[N - 1];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_back(T const (& arr)[N]) {
return arr[N - 1];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::reference
range_at(T (& arr)[N], typename sprout::container_traits<T[N]>::size_type i) {
return arr[i];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_at(T const (& arr)[N], typename sprout::container_traits<T const[N]>::size_type i) {
return arr[i];
}
// data access:
static SPROUT_CONSTEXPR typename sprout::container_traits<T[N]>::pointer
range_data(T (& arr)[N]) {
return &arr[0];
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
range_data(T const (& arr)[N]) {
return &arr[0];
}
};
template<typename T, std::size_t N>
struct container_range_traits<T const[N]> {
public:
// iterators:
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::iterator
range_begin(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_begin(arr);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::iterator
range_end(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_end(arr);
}
// capacity:
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::size_type
range_size(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_size(arr);
}
static SPROUT_CONSTEXPR bool
range_empty(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_empty(arr);
}
// element access:
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_front(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_front(arr);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_back(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_back(arr);
}
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::reference
range_at(T const (& arr)[N], typename sprout::container_traits<T const[N]>::size_type i) {
return sprout::container_range_traits<T[N]>::range_at(arr, i);
}
// data access:
static SPROUT_CONSTEXPR typename sprout::container_traits<T const[N]>::pointer
range_data(T const (& arr)[N]) {
return sprout::container_range_traits<T[N]>::range_data(arr);
}
};
} // namespace sprout
#endif // #ifndef SPROUT_CONTAINER_CONTAINER_RANGE_TRAITS_HPP
Reference in a new issue View git blame Copy permalink