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/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
#pragma once
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <iterator>
#include <vector>
#include "antlr4-common.h"
#include "misc/MurmurHash.h"
namespace antlr4 {
namespace atn {
class ANTLR4CPP_PUBLIC SerializedATNView final {
public:
using value_type = int32_t;
using size_type = size_t;
using difference_type = ptrdiff_t;
using reference = int32_t&;
using const_reference = const int32_t&;
using pointer = int32_t*;
using const_pointer = const int32_t*;
using iterator = const_pointer;
using const_iterator = const_pointer;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
SerializedATNView() = default;
SerializedATNView(const_pointer data, size_type size) : _data(data), _size(size) {}
SerializedATNView(const std::vector<int32_t> &serializedATN) : _data(serializedATN.data()), _size(serializedATN.size()) {}
SerializedATNView(const SerializedATNView&) = default;
SerializedATNView& operator=(const SerializedATNView&) = default;
const_iterator begin() const { return data(); }
const_iterator cbegin() const { return data(); }
const_iterator end() const { return data() + size(); }
const_iterator cend() const { return data() + size(); }
const_reverse_iterator rbegin() const { return const_reverse_iterator(end()); }
const_reverse_iterator crbegin() const { return const_reverse_iterator(cend()); }
const_reverse_iterator rend() const { return const_reverse_iterator(begin()); }
const_reverse_iterator crend() const { return const_reverse_iterator(cbegin()); }
bool empty() const { return size() == 0; }
const_pointer data() const { return _data; }
size_type size() const { return _size; }
size_type size_bytes() const { return size() * sizeof(value_type); }
const_reference operator[](size_type index) const { return _data[index]; }
private:
const_pointer _data = nullptr;
size_type _size = 0;
};
inline bool operator==(const SerializedATNView &lhs, const SerializedATNView &rhs) {
return (lhs.data() == rhs.data() && lhs.size() == rhs.size()) ||
(lhs.size() == rhs.size() && std::memcmp(lhs.data(), rhs.data(), lhs.size_bytes()) == 0);
}
inline bool operator!=(const SerializedATNView &lhs, const SerializedATNView &rhs) {
return !operator==(lhs, rhs);
}
inline bool operator<(const SerializedATNView &lhs, const SerializedATNView &rhs) {
int diff = std::memcmp(lhs.data(), rhs.data(), std::min(lhs.size_bytes(), rhs.size_bytes()));
return diff < 0 || (diff == 0 && lhs.size() < rhs.size());
}
} // namespace atn
} // namespace antlr4
namespace std {
template <>
struct hash<::antlr4::atn::SerializedATNView> {
size_t operator()(const ::antlr4::atn::SerializedATNView &serializedATNView) const {
return ::antlr4::misc::MurmurHash::hashCode(serializedATNView.data(), serializedATNView.size());
}
};
} // namespace std
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