60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/Common.h"
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#include <string.h>
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template<typename T>
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struct ScopedFValue
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{
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private:
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Luau::FValue<T>* value = nullptr;
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T oldValue = T();
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public:
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ScopedFValue(const char* name, T newValue)
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{
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for (Luau::FValue<T>* v = Luau::FValue<T>::list; v; v = v->next)
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if (strcmp(v->name, name) == 0)
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{
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value = v;
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oldValue = v->value;
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v->value = newValue;
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break;
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}
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LUAU_ASSERT(value);
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}
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ScopedFValue(const ScopedFValue&) = delete;
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ScopedFValue& operator=(const ScopedFValue&) = delete;
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ScopedFValue(ScopedFValue&& rhs)
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{
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value = rhs.value;
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oldValue = rhs.oldValue;
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rhs.value = nullptr;
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}
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ScopedFValue& operator=(ScopedFValue&& rhs)
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{
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value = rhs.value;
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oldValue = rhs.oldValue;
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rhs.value = nullptr;
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return *this;
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}
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~ScopedFValue()
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{
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if (value)
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value->value = oldValue;
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}
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};
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using ScopedFastFlag = ScopedFValue<bool>;
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using ScopedFastInt = ScopedFValue<int>;
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