llvm/libc/src/__support/CPP/span.h

//===-- Standalone implementation std::span ---------------------*- 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_SPAN_H
#define LLVM_LIBC_SRC___SUPPORT_CPP_SPAN_H

#include <stddef.h> // For size_t

#include "array.h"       // For array
#include "src/__support/macros/config.h"
#include "type_traits.h" // For remove_cv_t, enable_if_t, is_same_v, is_const_v

#include "src/__support/macros/attributes.h"

namespace LIBC_NAMESPACE_DECL {
namespace cpp {

// A trimmed down implementation of std::span.
// Missing features:
// - No constant size spans (e.g. Span<int, 4>),
// - Only handle pointer like types, no fancy interators nor object overriding
//   the & operator,
// - No implicit type conversion (e.g. Span<B>, initialized with As where A
//   inherits from B),
// - No reverse iterators
template <typename T> class span { … };

} // namespace cpp
} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC___SUPPORT_CPP_SPAN_H