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add array constexpr member-functions fill, assign

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bolero-MURAKAMI 2012-10-05 01:53:39 +09:00
parent d76d714816
commit a660478548
10 changed files with 110 additions and 70 deletions
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33
sprout/array/array.hpp
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@ -17,6 +17,19 @@
#endif
namespace sprout {
namespace detail {
template<sprout::index_t Index, typename T>
inline SPROUT_CONSTEXPR T const&
array_dummy_get(T const& value) {
return value;
}
template<typename Array, typename T, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR Array
array_fill_impl(T const& value, sprout::index_tuple<Indexes...>) {
return Array{{array_dummy_get<Indexes>(value)...}};
}
} // namespace detail
//
// array
//
@ -47,6 +60,9 @@ namespace sprout {
void fill(const_reference value) {
std::fill_n(begin(), size(), value);
}
SPROUT_CONSTEXPR array fill(const_reference value) const {
return sprout::detail::array_fill_impl<array>(value, sprout::index_n<0, N>::make());
}
void swap(array<T, N>& other) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::swap(std::declval<T&>(), std::declval<T&>()))) {
std::swap_ranges(other.begin(), other.end(), begin());
}
@ -176,6 +192,9 @@ namespace sprout {
void assign(const_reference value) {
fill(value);
}
SPROUT_CONSTEXPR array assign(const_reference value) const {
return fill(value);
}
void rangecheck(size_type i) const {
if (i >= size()) {
throw std::out_of_range("array<>: index out of range");
@ -189,17 +208,16 @@ namespace sprout {
// swap
//
template<typename T, std::size_t N>
inline void swap(sprout::array<T, N>& lhs, sprout::array<T, N>& rhs) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs))) {
inline void swap(sprout::array<T, N>& lhs, sprout::array<T, N>& rhs)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
{
lhs.swap(rhs);
}
namespace detail {
template<typename T, std::size_t N, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR sprout::array<T, N> to_array_impl(
T const (& arr)[N],
sprout::index_tuple<Indexes...>
)
{
inline SPROUT_CONSTEXPR sprout::array<T, N>
to_array_impl(T const (& arr)[N], sprout::index_tuple<Indexes...>) {
return sprout::array<T, N>{{arr[Indexes]...}};
}
} // namespace detail
@ -207,7 +225,8 @@ namespace sprout {
// to_array
//
template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::array<T, N> to_array(T const (& arr)[N]) {
inline SPROUT_CONSTEXPR sprout::array<T, N>
to_array(T const (& arr)[N]) {
return sprout::detail::to_array_impl(arr, sprout::index_range<0, N>::make());
}
} // namespace sprout