folly::Unexpected< Error > Class Template Reference

#include <Expected.h>

Inheritance diagram for folly::Unexpected< Error >:

Classes
class	BadExpectedAccess
struct	MakeBadExpectedAccess

Public Member Functions
	Unexpected ()=default
	Unexpected (const Unexpected &)=default
	Unexpected (Unexpected &&)=default
Unexpected &	operator= (const Unexpected &)=default
Unexpected &	operator= (Unexpected &&)=default
constexpr	Unexpected (const Error &err)
constexpr	Unexpected (Error &&err)
template<class Other , bool FB_CONCATENATE = false, typename std::enable_if< (FB_CONCATENATE(FB_CONCATENATE(Folly, Requires), __LINE__)||static_cast< bool >(std::is_constructible< Error, Other && >::value)), int >::type = 0>
constexpr	Unexpected (Unexpected< Other > that)
template<class Other , bool FB_CONCATENATE = false, typename std::enable_if< (FB_CONCATENATE(FB_CONCATENATE(Folly, Requires), __LINE__)||static_cast< bool >(std::is_assignable< Error &, Other && >::value)), int >::type = 0>
Unexpected &	operator= (Unexpected< Other > that)
Error &	error ()&
const Error &	error () const &
Error &&	error ()&&

Private Attributes
Error	error_

Friends
template<class E >
class	Unexpected
template<class V , class E >
class	Expected
struct	expected_detail::ExpectedHelper

Detailed Description

template<class Error>
class folly::Unexpected< Error >

Forward declarations

Unexpected - a helper type used to disambiguate the construction of Expected objects in the error state.

Definition at line 72 of file Expected.h.

Constructor & Destructor Documentation

template<class Error>

folly::Unexpected< Error >::Unexpected ( )

default

Constructors

template<class Error>

folly::Unexpected< Error >::Unexpected ( const Unexpected< Error > &  )

default

template<class Error>

folly::Unexpected< Error >::Unexpected ( Unexpected< Error > &&  )

default

template<class Error>

constexpr folly::Unexpected< Error >::Unexpected ( const Error &  err )

inline

Definition at line 715 of file Expected.h.

: error_(err) {}

template<class Error>

constexpr folly::Unexpected< Error >::Unexpected ( Error &&  err )

inline

Definition at line 716 of file Expected.h.

References FOLLY_REQUIRES_TRAILING, and value.

: error_(std::move(err)) {}

template<class Error>

template<class Other , bool FB_CONCATENATE = false, typename std::enable_if< (FB_CONCATENATE(FB_CONCATENATE(Folly, Requires), __LINE__)||static_cast< bool >(std::is_constructible< Error, Other && >::value)), int >::type = 0>

constexpr folly::Unexpected< Error >::Unexpected ( Unexpected< Other >  that )

inline

Definition at line 720 of file Expected.h.

References FOLLY_REQUIRES_TRAILING, and value.

      : error_(std::move(that.error())) {}

Member Function Documentation

template<class Error>

Error& folly::Unexpected< Error >::error ( )

inline

Observers

Definition at line 735 of file Expected.h.

Referenced by folly::Unexpected< Error >::operator=(), and folly::operator==().

                   {
    return error_;
  }

template<class Error>

const Error& folly::Unexpected< Error >::error ( ) const

inline

Definition at line 738 of file Expected.h.

                              {
    return error_;
  }

template<class Error>

Error&& folly::Unexpected< Error >::error ( )

inline

Definition at line 741 of file Expected.h.

References folly::gen::move.

                     {
    return std::move(error_);
  }

template<class Error>

Unexpected& folly::Unexpected< Error >::operator= ( const Unexpected< Error > &  )

default

template<class Error>

Unexpected& folly::Unexpected< Error >::operator= ( Unexpected< Error > &&  )

default

template<class Error>

template<class Other , bool FB_CONCATENATE = false, typename std::enable_if< (FB_CONCATENATE(FB_CONCATENATE(Folly, Requires), __LINE__)||static_cast< bool >(std::is_assignable< Error &, Other && >::value)), int >::type = 0>

Unexpected& folly::Unexpected< Error >::operator= ( Unexpected< Other >  that )

inline

Assignment

Definition at line 728 of file Expected.h.

References folly::Unexpected< Error >::error(), and folly::gen::move.

                                                {
    error_ = std::move(that.error());
  }

Friends And Related Function Documentation

template<class Error>

template<class V , class E >

friend class Expected

friend

Definition at line 682 of file Expected.h.

template<class Error>

friend struct expected_detail::ExpectedHelper

friend

Definition at line 683 of file Expected.h.

template<class Error>

template<class E >

friend class Unexpected

friend

Definition at line 680 of file Expected.h.

Member Data Documentation

template<class Error>

Error folly::Unexpected< Error >::error_

private

Definition at line 753 of file Expected.h.

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

• proxygen/folly/folly/Expected.h