ug::Variant Class Reference

A variant can represent variables of different types. More...

#include <variant.h>

Public Types
enum	Type {   VT_INVALID = 0 , VT_BOOL = 1 , VT_INT = 2 , VT_SIZE_T = 3 ,   VT_FLOAT = 4 , VT_DOUBLE = 5 , VT_CSTRING = 6 , VT_STDSTRING = 7 ,   VT_POINTER = 8 , VT_CONST_POINTER = 9 , VT_SMART_POINTER = 10 , VT_CONST_SMART_POINTER = 11 }

Public Member Functions
bool	is_valid () const
const Variant &	operator= (const Variant &v)
template<typename T >
T	to () const
template<>
bool	to () const
template<>
int	to () const
template<>
size_t	to () const
template<>
float	to () const
template<>
double	to () const
template<>
const char *	to () const
template<>
void *	to () const
template<>
const void *	to () const
template<>
ConstSmartPtr< void >	to () const
template<>
SmartPtr< void >	to () const
bool	to_bool () const
const char *	to_c_string () const
const void *	to_const_pointer () const
ConstSmartPtr< void >	to_const_smart_pointer () const
double	to_double () const
float	to_float () const
int	to_int () const
number	to_number () const
void *	to_pointer () const
size_t	to_size_t () const
SmartPtr< void >	to_smart_pointer () const
const std::string &	to_std_string () const
Type	type () const
	Variant ()
	Variant (bool val)
	Variant (const char *val)
	Variant (const ConstSmartPtr< void > &val)
	Variant (const SmartPtr< void > &val)
	Variant (const std::string &val)
	Variant (const Variant &v)
	Variant (const void *val)
	Variant (double val)
	Variant (float val)
	Variant (int val)
	Variant (size_t val)
	Variant (void *val)
	~Variant ()

Static Public Member Functions
template<typename T >
static Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()
template<>
Variant::Type	type ()

Private Member Functions
void	assign_variant (const Variant &v)
	this method only performs assignment, no prior clean up More...
const char *	type_name () const
	returns the name of the current type More...

Private Attributes
union {
bool   m_bool
const void *   m_constptr
ConstSmartPtr< void > *   m_constsmartptr
const char *   m_cstring
double   m_double
float   m_float
int   m_int
void *   m_pointer
size_t   m_size_t
SmartPtr< void > *   m_smartptr
std::string *   m_stdstring
};
Type	m_type

Detailed Description

A variant can represent variables of different types.

A variant will represent the value, which was assigned during construction or in an assignment operation. Use the different to_.. methods, to retrieve the encapsulated value. Take care only to retrieve values, which are compatible with the encapsulated value.

Number and boolean types are automatically converted to each other: VT_BOOL, VT_INT, VT_FLOAT, VT_DOUBLE.

A stdstring is automatically converted to a cstr, but not vice-versa.

You may inspect the type represented by a variant by calling the type() method, which will return a constant enumerated in Variant::Type.

Member Enumeration Documentation

Type

enum ug::Variant::Type

Enumerator
VT_INVALID
VT_BOOL
VT_INT
VT_SIZE_T
VT_FLOAT
VT_DOUBLE
VT_CSTRING
VT_STDSTRING
VT_POINTER
VT_CONST_POINTER
VT_SMART_POINTER
VT_CONST_SMART_POINTER

Constructor & Destructor Documentation

Variant() [1/13]

ug::Variant::Variant

(

)

Variant() [2/13]

ug::Variant::Variant

(

bool

val

)

Variant() [3/13]

ug::Variant::Variant

(

int

val

)

Variant() [4/13]

ug::Variant::Variant

(

size_t

val

)

Variant() [5/13]

ug::Variant::Variant

(

float

val

)

Variant() [6/13]

ug::Variant::Variant

(

double

val

)

Variant() [7/13]

ug::Variant::Variant

(

const char *

val

)

Variant() [8/13]

ug::Variant::Variant

(

const std::string &

val

)

References new().

Variant() [9/13]

ug::Variant::Variant

(

void *

val

)

Variant() [10/13]

ug::Variant::Variant

(

const void *

val

)

Variant() [11/13]

ug::Variant::Variant

(

const SmartPtr< void > &

val

)

References new().

Variant() [12/13]

ug::Variant::Variant

(

const ConstSmartPtr< void > &

val

)

References new().

Variant() [13/13]

ug::Variant::Variant

(

const Variant &

v

)

References assign_variant().

~Variant()

ug::Variant::~Variant

(

)

References m_constsmartptr, m_smartptr, m_stdstring, m_type, VT_CONST_SMART_POINTER, VT_SMART_POINTER, and VT_STDSTRING.

Member Function Documentation

assign_variant()

void ug::Variant::assign_variant ( const Variant &  v )

private

this method only performs assignment, no prior clean up

References m_bool, m_constptr, m_constsmartptr, m_cstring, m_double, m_float, m_int, m_pointer, m_size_t, m_smartptr, m_stdstring, m_type, untested, VT_BOOL, VT_CONST_POINTER, VT_CONST_SMART_POINTER, VT_CSTRING, VT_DOUBLE, VT_FLOAT, VT_INT, VT_POINTER, VT_SIZE_T, VT_SMART_POINTER, and VT_STDSTRING.

Referenced by operator=(), and Variant().

is_valid()

bool ug::Variant::is_valid ( ) const

inline

operator=()

const Variant & ug::Variant::operator=

(

const Variant &

v

)

References assign_variant(), m_constsmartptr, m_smartptr, m_stdstring, m_type, VT_CONST_SMART_POINTER, VT_SMART_POINTER, and VT_STDSTRING.

to() [1/10]

template<typename T >

T ug::Variant::to ( ) const

inline

Referenced by ug::bridge::ParameterStack::_to_native(), ug::bridge::ParameterStack::_to_native_vector(), ug::bridge::ParameterStack::_to_pointer_vector(), and ug::bridge::ParameterStack::_to_void_pointer_vector().

to() [2/10]

template<>

int ug::Variant::to ( ) const

inline

References to_int().

to() [3/10]

template<>

size_t ug::Variant::to ( ) const

inline

References to_size_t().

to() [4/10]

template<>

float ug::Variant::to ( ) const

inline

References to_float().

to() [5/10]

template<>

double ug::Variant::to ( ) const

inline

References to_double().

to() [6/10]

template<>

const char* ug::Variant::to ( ) const

inline

References to_c_string().

to() [7/10]

template<>

void* ug::Variant::to ( ) const

inline

References to_pointer().

to() [8/10]

template<>

const void* ug::Variant::to ( ) const

inline

References to_const_pointer().

to() [9/10]

template<>

SmartPtr<void> ug::Variant::to ( ) const

inline

to() [10/10]

template<>

ConstSmartPtr<void> ug::Variant::to ( ) const

inline

to_bool()

bool ug::Variant::to_bool

(

)

const

References m_bool, m_double, m_float, m_int, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, VT_DOUBLE, VT_FLOAT, VT_INT, and VT_SIZE_T.

Referenced by ug::ProcessHierarchy::add_partition_hint(), operator<<(), ug::Partitioner_DynamicBisection< TElem, dim >::partition(), ug::ProcessHierarchy::partition_hint(), ug::Serialize(), and to().

to_c_string()

const char * ug::Variant::to_c_string

(

)

const

References m_cstring, m_stdstring, m_type, type_name(), UG_THROW, VT_CSTRING, and VT_STDSTRING.

Referenced by operator<<(), ug::Serialize(), and to().

to_const_pointer()

const void * ug::Variant::to_const_pointer

(

)

const

References m_constptr, m_pointer, m_type, type_name(), UG_THROW, VT_CONST_POINTER, and VT_POINTER.

Referenced by to().

to_const_smart_pointer()

ConstSmartPtr< void > ug::Variant::to_const_smart_pointer

(

)

const

References m_constsmartptr, m_smartptr, m_type, type_name(), UG_THROW, VT_CONST_SMART_POINTER, and VT_SMART_POINTER.

to_double()

double ug::Variant::to_double

(

)

const

References m_bool, m_double, m_float, m_int, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, VT_DOUBLE, VT_FLOAT, VT_INT, and VT_SIZE_T.

Referenced by operator<<(), ug::Serialize(), and to().

to_float()

float ug::Variant::to_float

(

)

const

References m_bool, m_double, m_float, m_int, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, VT_DOUBLE, VT_FLOAT, VT_INT, and VT_SIZE_T.

Referenced by operator<<(), ug::Serialize(), and to().

to_int()

int ug::Variant::to_int

(

)

const

References m_bool, m_double, m_float, m_int, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, VT_DOUBLE, VT_FLOAT, VT_INT, and VT_SIZE_T.

Referenced by ug::DimensionOfSubset(), operator<<(), ug::Serialize(), and to().

to_number()

number ug::Variant::to_number

(

)

const

References m_bool, m_double, m_float, m_int, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, VT_DOUBLE, VT_FLOAT, VT_INT, and VT_SIZE_T.

to_pointer()

void * ug::Variant::to_pointer

(

)

const

References m_pointer, m_type, type_name(), UG_THROW, and VT_POINTER.

Referenced by to().

to_size_t()

size_t ug::Variant::to_size_t

(

)

const

References m_bool, m_size_t, m_type, type_name(), UG_THROW, VT_BOOL, and VT_SIZE_T.

Referenced by operator<<(), and to().

to_smart_pointer()

SmartPtr< void > ug::Variant::to_smart_pointer

(

)

const

References m_smartptr, m_type, type_name(), UG_THROW, and VT_SMART_POINTER.

to_std_string()

const std::string & ug::Variant::to_std_string

(

)

const

References m_stdstring, m_type, type_name(), UG_THROW, and VT_STDSTRING.

Referenced by operator<<(), and ug::Serialize().

type() [1/11]

template<typename T >

static Type ug::Variant::type ( )

inlinestatic

type() [2/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_INT.

type() [3/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_SIZE_T.

type() [4/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_FLOAT.

type() [5/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_DOUBLE.

type() [6/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_CSTRING.

type() [7/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_POINTER.

type() [8/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

References VT_CONST_POINTER.

type() [9/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

type() [10/11]

template<>

Variant::Type ug::Variant::type ( )

inlinestatic

type() [11/11]

Type ug::Variant::type ( ) const

inline

Referenced by operator<<(), and ug::Serialize().

type_name()

const char * ug::Variant::type_name ( ) const

private

returns the name of the current type

References m_type, VT_BOOL, VT_CONST_POINTER, VT_CONST_SMART_POINTER, VT_CSTRING, VT_DOUBLE, VT_FLOAT, VT_INT, VT_INVALID, VT_POINTER, VT_SIZE_T, VT_SMART_POINTER, and VT_STDSTRING.

Referenced by to_bool(), to_c_string(), to_const_pointer(), to_const_smart_pointer(), to_double(), to_float(), to_int(), to_number(), to_pointer(), to_size_t(), to_smart_pointer(), and to_std_string().

Member Data Documentation

union { ... }

m_bool

bool ug::Variant::m_bool

Referenced by assign_variant(), to_bool(), to_double(), to_float(), to_int(), to_number(), and to_size_t().

m_constptr

const void* ug::Variant::m_constptr

Referenced by assign_variant(), and to_const_pointer().

m_constsmartptr

ConstSmartPtr<void>* ug::Variant::m_constsmartptr

Referenced by assign_variant(), operator=(), to_const_smart_pointer(), and ~Variant().

m_cstring

const char* ug::Variant::m_cstring

Referenced by assign_variant(), and to_c_string().

m_double

double ug::Variant::m_double

Referenced by assign_variant(), to_bool(), to_double(), to_float(), to_int(), and to_number().

m_float

float ug::Variant::m_float

Referenced by assign_variant(), to_bool(), to_double(), to_float(), to_int(), and to_number().

m_int

int ug::Variant::m_int

Referenced by assign_variant(), to_bool(), to_double(), to_float(), to_int(), and to_number().

m_pointer

void* ug::Variant::m_pointer

Referenced by assign_variant(), to_const_pointer(), and to_pointer().

m_size_t

size_t ug::Variant::m_size_t

Referenced by assign_variant(), to_bool(), to_double(), to_float(), to_int(), to_number(), and to_size_t().

m_smartptr

SmartPtr<void>* ug::Variant::m_smartptr

Referenced by assign_variant(), operator=(), to_const_smart_pointer(), to_smart_pointer(), and ~Variant().

m_stdstring

std::string* ug::Variant::m_stdstring

Referenced by assign_variant(), operator=(), to_c_string(), to_std_string(), and ~Variant().

m_type

Type ug::Variant::m_type

private

Referenced by assign_variant(), operator=(), to_bool(), to_c_string(), to_const_pointer(), to_const_smart_pointer(), to_double(), to_float(), to_int(), to_number(), to_pointer(), to_size_t(), to_smart_pointer(), to_std_string(), type_name(), and ~Variant().

---

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

• ugbase/common/util/variant.h
• ugbase/common/util/variant.cpp