bdlar::NullableValueConstRef Class Reference

#include <bdlar_nullablevalueref.h>

Public Types
typedef bdlat_TypeCategory::NullableValue	CategoryTag

Public Member Functions
template<class t_NULLABLE >
	NullableValueConstRef (const t_NULLABLE &nullable, typename bsl::enable_if< IsNullable< t_NULLABLE >::value >::type *=0)
	NullableValueConstRef (const void *objectAddress, const NullableValueConstVtable *vtable)
	NullableValueConstRef (const NullableValueRef &object)
template<class t_ACCESSOR >
int	accessValue (t_ACCESSOR &accessor) const
const NullableValueConstVtable *	vtable () const
bool	isNull () const
const void *	objectAddress () const
bdlat_TypeCategory::Value	valueCategory () const
const char *	xsdName (int format) const

Member Typedef Documentation

CategoryTag

typedef bdlat_TypeCategory::NullableValue bdlar::NullableValueConstRef::CategoryTag

Constructor & Destructor Documentation

NullableValueConstRef() [1/3]

template<class t_NULLABLE >

bdlar::NullableValueConstRef::NullableValueConstRef ( const t_NULLABLE &  nullable, typename bsl::enable_if< IsNullable< t_NULLABLE >::value >::type *  = 0  )

inlineexplicit

Create NullableValueConstRef object that type erases the supplied nullable object.

NullableValueConstRef() [2/3]

bdlar::NullableValueConstRef::NullableValueConstRef ( const void *  objectAddress, const NullableValueConstVtable *  vtable  )

inline

Create NullableValueConstRef object.

Precondition

The behaviour is undefined unless objectAddress and vtable point to the valid objects.

NullableValueConstRef() [3/3]

bdlar::NullableValueConstRef::NullableValueConstRef ( const NullableValueRef &  object )

inline

Create NullableValueConstRef object that wraps the same object as the specified object.

Member Function Documentation

accessValue()

template<class t_ACCESSOR >

int bdlar::NullableValueConstRef::accessValue ( t_ACCESSOR &  accessor ) const

inline

Invoke the specified accessor on the referred non-null value. The supplied accessor must be a callable type that can be called as if it had the following signature:

int accessor(const VALUE& refOrValue);

Return the value from the invocation of accessor.

Precondition

The behavior is undefined if the referred object is null.

isNull()

bool bdlar::NullableValueConstRef::isNull ( ) const

inline

Return true if the referred object contains a null value, and false otherwise.

objectAddress()

const void * bdlar::NullableValueConstRef::objectAddress ( ) const

inline

Return a pointer to the wrapped object.

valueCategory()

bdlat_TypeCategory::Value bdlar::NullableValueConstRef::valueCategory ( ) const

inline

Return the value type category.

vtable()

const NullableValueConstVtable * bdlar::NullableValueConstRef::vtable ( ) const

inline

Return a pointer to the vtable.

xsdName()

const char * bdlar::NullableValueConstRef::xsdName ( int  format ) const

inline

Return the bdlat_TypeName::xsdName value for the underlying object.

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

• bdlar_nullablevalueref.h