wpi::ConstStrippingForwardingCast< To, From, ForwardTo > Struct Template Reference

Provides a cast trait that strips const from types to make it easier to implement a const-version of a non-const cast. More...

#include <wpi/Casting.h>

Public Types
using	DecayedFrom = std::remove_cv_t<std::remove_pointer_t<From>>
using	NonConstFrom

Static Public Member Functions
static bool	isPossible (const From &f)
static decltype(auto)	castFailed ()
static decltype(auto)	doCast (const From &f)
static decltype(auto)	doCastIfPossible (const From &f)

Detailed Description

template<typename To, typename From, typename ForwardTo>
struct wpi::ConstStrippingForwardingCast< To, From, ForwardTo >

Provides a cast trait that strips const from types to make it easier to implement a const-version of a non-const cast.

It just removes boilerplate and reduces the amount of code you as the user need to implement. You can use it like this:

template<> struct CastInfo<foo, bar> { ...verbose implementation... };

template<> struct CastInfo<foo, const bar> : public ConstStrippingForwardingCast<foo, const bar, CastInfo<foo, bar>> {};

Member Typedef Documentation

DecayedFrom

template<typename To , typename From , typename ForwardTo >

using wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::DecayedFrom = std::remove_cv_t<std::remove_pointer_t<From>>

NonConstFrom

template<typename To , typename From , typename ForwardTo >

using wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::NonConstFrom

Initial value:

 
      std::conditional_t<std::is_pointer_v<From>, DecayedFrom *, DecayedFrom &>

Member Function Documentation

castFailed()

template<typename To , typename From , typename ForwardTo >

static decltype(auto) wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::castFailed ( )

inlinestatic

doCast()

template<typename To , typename From , typename ForwardTo >

static decltype(auto) wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::doCast ( const From & f )

inlinestatic

doCastIfPossible()

template<typename To , typename From , typename ForwardTo >

static decltype(auto) wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::doCastIfPossible ( const From & f )

inlinestatic

isPossible()

template<typename To , typename From , typename ForwardTo >

static bool wpi::ConstStrippingForwardingCast< To, From, ForwardTo >::isPossible ( const From & f )

inlinestatic

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The documentation for this struct was generated from the following file:

• wpi/Casting.h