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comparison mupdf-source/thirdparty/zxing-cpp/core/src/Scope.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * Copyright 2020 Axel Waggershauser
3 */
4 // SPDX-License-Identifier: Apache-2.0
5
6 #pragma once
7
8 #include <utility>
9
10 namespace ZXing {
11
12 /**
13 * ScopeExit is a trivial helper meant to be later replaced by std::scope_exit from library fundamentals TS v3.
14 */
15
16 template <typename EF>
17 class ScopeExit
18 {
19 EF fn;
20 public:
21 ScopeExit(EF&& fn) : fn(std::move(fn)) {}
22 ~ScopeExit() { fn(); }
23 };
24
25 template <class EF>
26 ScopeExit(EF) -> ScopeExit<EF>;
27
28 /**
29 * The SCOPE_EXIT macro is eliminating the need to give the object a name.
30 * Example usage:
31 * SCOPE_EXIT([]{ printf("exiting scope"); });
32 */
33
34 #define SCOPE_EXIT_CAT2(x, y) x##y
35 #define SCOPE_EXIT_CAT(x, y) SCOPE_EXIT_CAT2(x, y)
36 #define SCOPE_EXIT const auto SCOPE_EXIT_CAT(scopeExit_, __COUNTER__) = ScopeExit
37
38 } // ZXing
39