33 lines
634 B
C++
33 lines
634 B
C++
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#pragma once
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namespace defer_detail
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{
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template <typename Func>
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class DeferHelper
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{
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public:
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DeferHelper(Func func)
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: m_func(func)
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{
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}
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~DeferHelper()
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{
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m_func();
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}
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private:
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Func m_func;
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};
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template <typename Func>
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DeferHelper<Func> CreateDeferHelper(Func func)
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{
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return DeferHelper<Func>(func);
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}
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}
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#define DEFER_1(x, y) x##y
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#define DEFER_2(x, y) DEFER_1(x, y)
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#define DEFER_3(x) DEFER_2(x, __COUNTER__)
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#define defer(code) auto DEFER_3(_defer_) = defer_detail::CreateDeferHelper( [&](){ code; } )
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