Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zxing-cpp/core/src/Scope.h @ 5:710d30cd138a

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author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 12:32:08 +0200
parents b50eed0cc0ef
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 /*
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2 * Copyright 2020 Axel Waggershauser
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3 */
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4 // SPDX-License-Identifier: Apache-2.0
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6 #pragma once
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8 #include <utility>
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10 namespace ZXing {
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12 /**
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13 * ScopeExit is a trivial helper meant to be later replaced by std::scope_exit from library fundamentals TS v3.
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14 */
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16 template <typename EF>
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17 class ScopeExit
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18 {
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19 EF fn;
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20 public:
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21 ScopeExit(EF&& fn) : fn(std::move(fn)) {}
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22 ~ScopeExit() { fn(); }
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23 };
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25 template <class EF>
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26 ScopeExit(EF) -> ScopeExit<EF>;
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28 /**
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29 * The SCOPE_EXIT macro is eliminating the need to give the object a name.
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30 * Example usage:
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31 * SCOPE_EXIT([]{ printf("exiting scope"); });
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32 */
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34 #define SCOPE_EXIT_CAT2(x, y) x##y
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35 #define SCOPE_EXIT_CAT(x, y) SCOPE_EXIT_CAT2(x, y)
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36 #define SCOPE_EXIT const auto SCOPE_EXIT_CAT(scopeExit_, __COUNTER__) = ScopeExit
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38 } // ZXing
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