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//===-- A self contained equivalent of std::array ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_SUPPORT_CPP_ARRAY_H
#define LLVM_LIBC_SRC_SUPPORT_CPP_ARRAY_H
#include <stddef.h> // For size_t.
namespace __llvm_libc {
namespace cpp {
template <class T, size_t N> struct array {
static_assert(N != 0, "Cannot create a __llvm_libc::cpp::array of size 0.");
T Data[N];
using value_type = T;
using iterator = T *;
using const_iterator = const T *;
constexpr T *data() { return Data; }
constexpr const T *data() const { return Data; }
constexpr T &front() { return Data[0]; }
constexpr T &front() const { return Data[0]; }
constexpr T &back() { return Data[N - 1]; }
constexpr T &back() const { return Data[N - 1]; }
constexpr T &operator[](size_t Index) { return Data[Index]; }
constexpr const T &operator[](size_t Index) const { return Data[Index]; }
constexpr size_t size() const { return N; }
constexpr bool empty() const { return N == 0; }
constexpr iterator begin() { return Data; }
constexpr const_iterator begin() const { return Data; }
constexpr iterator end() { return Data + N; }
const_iterator end() const { return Data + N; }
};
} // namespace cpp
} // namespace __llvm_libc
#endif // LLVM_LIBC_SRC_SUPPORT_CPP_ARRAY_H
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