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57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_TRACKED_VALUE_H
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#define SUPPORT_TRACKED_VALUE_H
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#include <cassert>
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#include "test_macros.h"
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struct TrackedValue {
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enum State { CONSTRUCTED, MOVED_FROM, DESTROYED };
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State state;
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TrackedValue() : state(State::CONSTRUCTED) {}
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TrackedValue(TrackedValue const& t) : state(State::CONSTRUCTED) {
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assert(t.state != State::MOVED_FROM && "copying a moved-from object");
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assert(t.state != State::DESTROYED && "copying a destroyed object");
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}
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#if TEST_STD_VER >= 11
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TrackedValue(TrackedValue&& t) : state(State::CONSTRUCTED) {
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assert(t.state != State::MOVED_FROM && "double moving from an object");
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assert(t.state != State::DESTROYED && "moving from a destroyed object");
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t.state = State::MOVED_FROM;
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}
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#endif
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TrackedValue& operator=(TrackedValue const& t) {
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assert(state != State::DESTROYED && "copy assigning into destroyed object");
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assert(t.state != State::MOVED_FROM && "copying a moved-from object");
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assert(t.state != State::DESTROYED && "copying a destroyed object");
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state = t.state;
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return *this;
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}
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#if TEST_STD_VER >= 11
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TrackedValue& operator=(TrackedValue&& t) {
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assert(state != State::DESTROYED && "move assigning into destroyed object");
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assert(t.state != State::MOVED_FROM && "double moving from an object");
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assert(t.state != State::DESTROYED && "moving from a destroyed object");
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state = t.state;
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t.state = State::MOVED_FROM;
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return *this;
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}
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#endif
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~TrackedValue() {
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assert(state != State::DESTROYED && "double-destroying an object");
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state = State::DESTROYED;
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}
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};
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#endif // SUPPORT_TRACKED_VALUE_H
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