bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR > Class Template Reference

#include <bdlb_variant.h>

Detailed Description

template<class RESULT_TYPE, class VISITOR>
class bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >

This struct provides a helper for implementing Variant::applyRaw that enables applyRaw to support visitor functors that do not provide an overload for operator()(bslmf::Nil). Objects of this type are constructed using a functor of (template parameter) type VISITOR, whose operator() returns the (template parameter) type RESULT_TYPE. A Variant_RawVisitorHelper wraps a functor of type VISITOR and provides an implementation of operator()(bslmf::Nil) that performs a BSLS_ASSERT_OPT(false).

Note

Note that this overload is needed to enable compilation (specifically, to instantiate doApply and doApplyR), but is never invoked by any code path at runtime.

See bdlb_variant

Public Member Functions
	Variant_RawVisitorHelper (VISITOR *visitor)
template<class ARGUMENT_TYPE >
RESULT_TYPE	operator() (ARGUMENT_TYPE &argument)
template<class ARGUMENT_TYPE >
RESULT_TYPE	operator() (const ARGUMENT_TYPE &argument)
template<class ARGUMENT_TYPE >
RESULT_TYPE	operator() (ARGUMENT_TYPE &argument) const
template<class ARGUMENT_TYPE >
RESULT_TYPE	operator() (const ARGUMENT_TYPE &argument) const
RESULT_TYPE	operator() (bslmf::Nil) const

Constructor & Destructor Documentation

Variant_RawVisitorHelper()

template<class RESULT_TYPE , class VISITOR >

bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::Variant_RawVisitorHelper ( VISITOR *  visitor )

inlineexplicit

Create a RawVisitorHelper functor that delegates to the specified visitor.

Member Function Documentation

operator()() [1/5]

template<class RESULT_TYPE , class VISITOR >

template<class ARGUMENT_TYPE >

RESULT_TYPE bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::operator() ( ARGUMENT_TYPE &  argument )

inline

Invoke the functor supplied at construction with the specified argument, and return the result.

operator()() [2/5]

template<class RESULT_TYPE , class VISITOR >

template<class ARGUMENT_TYPE >

RESULT_TYPE bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::operator() ( ARGUMENT_TYPE &  argument ) const

inline

Invoke the functor supplied at construction with the specified argument, and return the result.

operator()() [3/5]

template<class RESULT_TYPE , class VISITOR >

RESULT_TYPE bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::operator()

(

bslmf::Nil

)

const

Do not call. The behavior of this method is undefined.

operator()() [4/5]

template<class RESULT_TYPE , class VISITOR >

template<class ARGUMENT_TYPE >

RESULT_TYPE bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::operator() ( const ARGUMENT_TYPE &  argument )

inline

operator()() [5/5]

template<class RESULT_TYPE , class VISITOR >

template<class ARGUMENT_TYPE >

RESULT_TYPE bdlb::Variant_RawVisitorHelper< RESULT_TYPE, VISITOR >::operator() ( const ARGUMENT_TYPE &  argument ) const

inline

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

• bdlb_variant.h