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46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
//===--- Ownership.h - Swift ASTs for Reference Ownership -------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines common structures for working with the different
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// kinds of reference ownership supported by Swift, such as 'weak' and
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// 'unowned'.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_OWNERSHIP_H
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#define SWIFT_OWNERSHIP_H
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#include <stdint.h>
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namespace swift {
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/// Different kinds of reference ownership supported by Swift.
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// This enum is used in diagnostics. If you add a case here, the diagnostics
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// must be updated as well.
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enum class Ownership : uint8_t {
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/// \brief a strong reference (the default semantics)
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Strong,
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/// \brief a 'weak' reference
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Weak,
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/// \brief an 'unowned' reference
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Unowned,
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/// \brief an 'unowned(unsafe)' reference
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Unmanaged,
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};
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} // end namespace swift
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#endif
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