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27 lines
644 B
C++
27 lines
644 B
C++
#pragma once
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#include <utility>
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namespace ext
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{
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template <class F> class scope_guard {
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const F function;
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public:
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constexpr scope_guard(const F & function) : function{function} {}
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constexpr scope_guard(F && function) : function{std::move(function)} {}
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~scope_guard() { function(); }
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};
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template <class F>
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inline scope_guard<F> make_scope_guard(F && function) { return std::forward<F>(function); }
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}
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#define SCOPE_EXIT_CONCAT(n, ...) \
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const auto scope_exit##n = ext::make_scope_guard([&] { __VA_ARGS__; })
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#define SCOPE_EXIT_FWD(n, ...) SCOPE_EXIT_CONCAT(n, __VA_ARGS__)
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#define SCOPE_EXIT(...) SCOPE_EXIT_FWD(__LINE__, __VA_ARGS__)
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