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// Copyright 2017 Elias Kosunen
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This file is a part of scnlib:
// https://github.com/eliaskosunen/scnlib
#ifndef SCN_UTIL_ARRAY_H
#define SCN_UTIL_ARRAY_H
#include "../detail/fwd.h"
#include <cstdint>
namespace scn {
SCN_BEGIN_NAMESPACE
namespace detail {
/**
* Implementation of `std::array` without including `<array>` (can be
* heavy-ish)
*/
template <typename T, std::size_t N>
struct array {
static_assert(N > 0, "zero-sized array not supported");
using value_type = T;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
using reference = T&;
using const_reference = const T&;
using pointer = T*;
using const_pointer = const T*;
using iterator = pointer;
using const_iterator = const_pointer;
SCN_CONSTEXPR14 reference operator[](size_type i)
{
SCN_EXPECT(i < size());
return m_data[i];
}
SCN_CONSTEXPR14 const_reference operator[](size_type i) const
{
SCN_EXPECT(i < size());
return m_data[i];
}
SCN_CONSTEXPR14 iterator begin() noexcept
{
return m_data;
}
constexpr const_iterator begin() const noexcept
{
return m_data;
}
constexpr const_iterator cbegin() const noexcept
{
return m_data;
}
SCN_CONSTEXPR14 iterator end() noexcept
{
return m_data + N;
}
constexpr const_iterator end() const noexcept
{
return m_data + N;
}
constexpr const_iterator cend() const noexcept
{
return m_data + N;
}
SCN_CONSTEXPR14 pointer data() noexcept
{
return m_data;
}
constexpr const_pointer data() const noexcept
{
return m_data;
}
SCN_NODISCARD constexpr size_type size() const noexcept
{
return N;
}
T m_data[N];
};
} // namespace detail
SCN_END_NAMESPACE
} // namespace scn
#endif
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