// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_TEST_MOVE_ONLY_INT_H_
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#define BASE_TEST_MOVE_ONLY_INT_H_
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#include "base/macros.h"
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namespace base {
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// A move-only class that holds an integer. This is designed for testing
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// containers. See also CopyOnlyInt.
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class MoveOnlyInt {
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public:
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explicit MoveOnlyInt(int data = 1) : data_(data) {}
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MoveOnlyInt(MoveOnlyInt&& other) : data_(other.data_) { other.data_ = 0; }
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~MoveOnlyInt() { data_ = 0; }
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MoveOnlyInt& operator=(MoveOnlyInt&& other) {
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data_ = other.data_;
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other.data_ = 0;
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return *this;
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}
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friend bool operator==(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return lhs.data_ == rhs.data_;
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}
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friend bool operator!=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return !operator==(lhs, rhs);
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}
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friend bool operator<(const MoveOnlyInt& lhs, int rhs) {
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return lhs.data_ < rhs;
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}
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friend bool operator<(int lhs, const MoveOnlyInt& rhs) {
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return lhs < rhs.data_;
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}
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friend bool operator<(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return lhs.data_ < rhs.data_;
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}
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friend bool operator>(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return rhs < lhs;
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}
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friend bool operator<=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return !(rhs < lhs);
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}
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friend bool operator>=(const MoveOnlyInt& lhs, const MoveOnlyInt& rhs) {
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return !(lhs < rhs);
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}
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int data() const { return data_; }
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private:
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volatile int data_;
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DISALLOW_COPY_AND_ASSIGN(MoveOnlyInt);
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};
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} // namespace base
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#endif // BASE_TEST_MOVE_ONLY_INT_H_
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