91 lines
1.5 KiB
C++
91 lines
1.5 KiB
C++
/***
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Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: auOptionalEx.hpp
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Date: 2022-3-23
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Author: Reece
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***/
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#pragma once
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#include "auCopyMoveUtils.hpp"
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#include "auHashUtils.hpp"
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template<class T>
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struct AuOptionalEx
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{
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bool hasValue;
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T type;
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AuOptionalEx() : hasValue({})
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{}
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AuOptionalEx(T &value) : type(value), hasValue(true)
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{}
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AuOptionalEx(T &&value) : type(value), hasValue(true)
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{}
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T &Value()
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{
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return type;
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}
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const T &Value() const
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{
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return type;
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}
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template<class U>
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constexpr T ValueOr(U &&defaultValue) const &
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{
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return bool(*this) ? value() : static_cast<T>(AuForward<U>(defaultValue));
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}
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template<class U>
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constexpr T ValueOr(U &&defaultValue) &&
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{
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return bool(*this) ? AuMove(value()) : static_cast<T>(AuForward<U>(defaultValue));
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}
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bool HasValue() const
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{
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return this->hasValue;
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}
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operator bool() const
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{
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return this->hasValue;
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}
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T &value()
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{
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return this->type;
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}
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const T &value() const
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{
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return this->type;
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}
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bool has_value() const
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{
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return this->hasValue;
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}
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AuUInt HashCode() const
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{
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return AuHashCode(type);
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}
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void Reset()
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{
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this->type = {};
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this->hasValue = {};
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}
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void Swap(AuOptionalEx &&ex)
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{
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AuSwap(this->type, ex.type);
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AuSwap(this->hasValue, ex.hasValue);
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}
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}; |