38 lines
787 B
C++
38 lines
787 B
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#pragma once
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#include <utility>
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namespace lean {
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/**
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\brief Template for simulating "fluid-resets".
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Example:
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<code>
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{
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freset<cache> reset(m_cache); // reset the cache inside this scope
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} // restore original value of m_cache
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</code>
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\remark The reset is performed by creating a fresh value and performing a swap.
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*/
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template<typename T>
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class freset {
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T & m_ref;
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T m_saved_value;
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public:
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freset(T & ref):
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m_ref(ref) {
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using std::swap;
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swap(m_ref, m_saved_value);
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}
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~freset() {
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using std::swap;
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swap(m_ref, m_saved_value);
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}
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};
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}
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