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#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- llvm/ADT/EnumeratedArray.h - Enumerated 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file defines an array type that can be indexed using scoped enum
/// values.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_ADT_ENUMERATEDARRAY_H
#define LLVM_ADT_ENUMERATEDARRAY_H
#include <cassert>
#include <iterator>
namespace llvm {
template <typename ValueType, typename Enumeration,
Enumeration LargestEnum = Enumeration::Last, typename IndexType = int,
IndexType Size = 1 + static_cast<IndexType>(LargestEnum)>
class EnumeratedArray {
public:
using iterator = ValueType *;
using const_iterator = const ValueType *;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
using reverse_iterator = std::reverse_iterator<iterator>;
using value_type = ValueType;
using reference = ValueType &;
using const_reference = const ValueType &;
using pointer = ValueType *;
using const_pointer = const ValueType *;
EnumeratedArray() = default;
EnumeratedArray(ValueType V) {
for (IndexType IX = 0; IX < Size; ++IX) {
Underlying[IX] = V;
}
}
EnumeratedArray(std::initializer_list<ValueType> Init) {
assert(Init.size() == Size && "Incorrect initializer size");
for (IndexType IX = 0; IX < Size; ++IX) {
Underlying[IX] = *(Init.begin() + IX);
}
}
const ValueType &operator[](Enumeration Index) const {
auto IX = static_cast<IndexType>(Index);
assert(IX >= 0 && IX < Size && "Index is out of bounds.");
return Underlying[IX];
}
ValueType &operator[](Enumeration Index) {
return const_cast<ValueType &>(
static_cast<const EnumeratedArray<ValueType, Enumeration, LargestEnum,
IndexType, Size> &>(*this)[Index]);
}
IndexType size() const { return Size; }
bool empty() const { return size() == 0; }
iterator begin() { return Underlying; }
const_iterator begin() const { return Underlying; }
iterator end() { return begin() + size(); }
const_iterator end() const { return begin() + size(); }
reverse_iterator rbegin() { return reverse_iterator(end()); }
const_reverse_iterator rbegin() const {
return const_reverse_iterator(end());
}
reverse_iterator rend() { return reverse_iterator(begin()); }
const_reverse_iterator rend() const {
return const_reverse_iterator(begin());
}
private:
ValueType Underlying[Size];
};
} // namespace llvm
#endif // LLVM_ADT_ENUMERATEDARRAY_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
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