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UT_Optional.h
Go to the documentation of this file.
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/*
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* PROPRIETARY INFORMATION. This software is proprietary to
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* Side Effects Software Inc., and is not to be reproduced,
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* transmitted, or disclosed in any way without written permission.
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*
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* RELATION TO THE STL:
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*
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* Use the wrapper UT_Optional instead of std::optional for consistent style
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*
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* Reasoning:
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*
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* This used to be hboost::optional prior to C++17
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*/
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#pragma once
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#ifndef __UT_OPTIONAL_H_INCLUDED__
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#define __UT_OPTIONAL_H_INCLUDED__
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#include <
SYS/SYS_TypeDecorate.h
>
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#include <optional>
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#define UT_NULLOPT std::nullopt
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template
<
typename
T>
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using
UT_Optional
= std::optional<T>;
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#define UTmakeOptional std::make_optional
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//
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// Declare relocation traits. See SYS_TypeDecorate.h
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//
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// Guaranteed safe for trivial relocation:
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template
<
typename
T>
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struct
SafeTrivialRelocationNoCV
<
UT_Optional
<
T
> > :
SafeTrivialRelocationNoCV
< SYS_RemoveCV_t< T > > {};
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// Known to be unsafe for trivial relocation:
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template
<
typename
T>
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struct
UnsafeTrivialRelocationNoCV
<
UT_Optional
<
T
> > :
UnsafeTrivialRelocationNoCV
< SYS_RemoveCV_t< T > > {};
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#endif
UnsafeTrivialRelocationNoCV
Definition:
SYS_TypeDecorate.h:59
SafeTrivialRelocationNoCV
Definition:
SYS_TypeDecorate.h:54
UT_Optional
std::optional< T > UT_Optional
Definition:
UT_Optional.h:26
OBJ_MatchTransform::T
SYS_TypeDecorate.h
UT
UT_Optional.h
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