DBus::Variant Class Reference

A Variant is a type-safe union for DBus operations. More...

#include <variant.h>

Public Member Functions
	Variant ()
	Variant (uint8_t byte)
	Variant (bool b)
	Variant (int16_t i)
	Variant (uint16_t i)
	Variant (int32_t i)
	Variant (uint32_t i)
	Variant (int64_t i)
	Variant (uint64_t i)
	Variant (double i)
	Variant (const char *cstr)
	Variant (std::string str)
	Variant (Signature sig)
	Variant (Path path)
template<typename T >
	Variant (const std::vector< T > &vec)
template<typename Key , typename Value >
	Variant (const std::map< Key, Value > &map)
template<typename ... T>
	Variant (const std::tuple< T... > &tup)
	Variant (const Variant &other)
	Variant (Variant &&other)
	~Variant ()
Signature	signature () const
DataType	type () const
const std::vector< uint8_t > *	marshaled () const
int	data_alignment () const
bool	operator== (const Variant &other) const
Variant &	operator= (const Variant &other)
template<typename T >
std::vector< T >	to_vector ()
template<typename Key , typename Value >
std::map< Key, Value >	to_map ()
template<typename ... T>
std::tuple< T... >	to_tuple ()
bool	to_bool () const
uint8_t	to_uint8 () const
uint16_t	to_uint16 () const
int16_t	to_int16 () const
uint32_t	to_uint32 () const
int32_t	to_int32 () const
uint64_t	to_uint64 () const
int64_t	to_int64 () const
double	to_double () const
std::string	to_string () const
DBus::Path	to_path () const
DBus::Signature	to_signature () const
	operator bool ()
	operator uint8_t ()
	operator uint16_t ()
	operator int16_t ()
	operator uint32_t ()
	operator int32_t ()
	operator uint64_t ()
	operator int64_t ()
	operator double ()
	operator std::string ()
	operator DBus::Path ()
	operator DBus::Signature ()
template<typename T >
	operator std::vector< T > ()
template<typename Key , typename Data >
	operator std::map< Key, Data > ()
template<typename... T>
	operator std::tuple< T... > ()

Static Public Member Functions
static Variant	createFromMessage (MessageIterator iter)
	Obsolete, do not call. More...
static Variant	createFromDemarshal (Signature sig, std::shared_ptr< Demarshaling > demarshal, const std::vector< int > &filedescriptors, uint32_t depth)

Private Member Functions
void	recurseArray (SignatureIterator iter, std::shared_ptr< Demarshaling > demarshal, Marshaling *marshal, const std::vector< int > &filedescriptors, uint32_t depth)
void	recurseDictEntry (SignatureIterator iter, std::shared_ptr< Demarshaling > demarshal, Marshaling *marshal, uint32_t ending_offset, const std::vector< int > &filedescriptors, uint32_t depth)
void	recurseStruct (SignatureIterator sigit, std::shared_ptr< Demarshaling > demarshal, Marshaling *marshal, const std::vector< int > &filedescriptors, uint32_t depth)
void	remarshal (DataType dt, SignatureIterator sigit, std::shared_ptr< Demarshaling > demarshal, Marshaling *marshal, const std::vector< int > &filedescriptors, uint32_t depth)
void	recurseArray (MessageIterator iter, Marshaling *marshal)
	Obsolete, do not call. More...
void	recurseDictEntry (MessageIterator iter, Marshaling *marshal)
	Obsolete, do not call. More...
void	recurseStruct (MessageIterator iter, Marshaling *marshal)
	Obsolete, do not call. More...

Private Attributes
DataType	m_currentType
Signature	m_signature
std::vector< uint8_t >	m_marshaled
int	m_dataAlignment

Friends
class	priv::VariantAppendIterator
class	priv::VariantIterator
std::ostream &	operator<< (std::ostream &os, const Variant &var)

Detailed Description

A Variant is a type-safe union for DBus operations.

Variants are immutable - once you create them, you cannot change them.

To get the value out of the variant, use one of the to_XXX methods. If the type you requested is not possible to get out, an ErrorBadVariantCast will be thrown.

Constructor & Destructor Documentation

Variant() [1/19]

Variant::Variant

(

)

References DBus::INVALID.

Variant() [2/19]

Variant::Variant

(

uint8_t

byte

)

References DBus::BYTE, DBus::default_endianess(), m_marshaled, and DBus::Marshaling::marshal().

Variant() [3/19]

Variant::Variant

(

bool

b

)

References DBus::BOOLEAN, DBus::default_endianess(), m_marshaled, and DBus::Marshaling::marshal().

Variant() [4/19]

Variant::Variant

(

int16_t

i

)

References DBus::default_endianess(), DBus::INT16, m_marshaled, and DBus::Marshaling::marshal().

Variant() [5/19]

Variant::Variant

(

uint16_t

i

)

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::UINT16.

Variant() [6/19]

Variant::Variant

(

int32_t

i

)

References DBus::default_endianess(), DBus::INT32, m_marshaled, and DBus::Marshaling::marshal().

Variant() [7/19]

Variant::Variant

(

uint32_t

i

)

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::UINT32.

Variant() [8/19]

Variant::Variant

(

int64_t

i

)

References DBus::default_endianess(), DBus::INT64, m_marshaled, and DBus::Marshaling::marshal().

Variant() [9/19]

Variant::Variant

(

uint64_t

i

)

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::UINT64.

Variant() [10/19]

Variant::Variant

(

double

i

)

References DBus::default_endianess(), DBus::DOUBLE, m_marshaled, and DBus::Marshaling::marshal().

Variant() [11/19]

Variant::Variant

(

const char *

cstr

)

Variant() [12/19]

Variant::Variant

(

std::string

str

)

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::STRING.

Variant() [13/19]

Variant::Variant ( DBus::Signature  sig )

explicit

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::SIGNATURE.

Variant() [14/19]

Variant::Variant ( DBus::Path  path )

explicit

References DBus::default_endianess(), m_marshaled, DBus::Marshaling::marshal(), and DBus::OBJECT_PATH.

Variant() [15/19]

template<typename T >

DBus::Variant::Variant ( const std::vector< T > &  vec )

inline

References DBus::ARRAY.

Variant() [16/19]

template<typename Key , typename Value >

DBus::Variant::Variant ( const std::map< Key, Value > &  map )

inline

References DBus::ARRAY.

Variant() [17/19]

template<typename ... T>

DBus::Variant::Variant ( const std::tuple< T... > &  tup )

inline

References DBus::STRUCT.

Variant() [18/19]

Variant::Variant

(

const Variant &

other

)

Variant() [19/19]

Variant::Variant

(

Variant &&

other

)

References DBus::INVALID.

~Variant()

Variant::~Variant

(

)

Member Function Documentation

createFromDemarshal()

Variant Variant::createFromDemarshal ( Signature  sig, std::shared_ptr< Demarshaling >  demarshal, const std::vector< int > &  filedescriptors, uint32_t  depth  )

static

References DBus::TypeInfo::alignment(), DBus::ARRAY, DBus::Signature::begin(), DBus::BOOLEAN, DBus::BYTE, DBus::default_endianess(), DBus::DOUBLE, DBus::INT16, DBus::INT32, DBus::INT64, DBus::INVALID, LOGGER_NAME, m_currentType, m_dataAlignment, m_marshaled, m_signature, DBus::Marshaling::marshal(), DBus::Validator::maximum_message_depth(), DBus::OBJECT_PATH, DBus::SignatureIterator::recurse(), recurseArray(), recurseStruct(), DBus::SIGNATURE, SIMPLELOGGER_TRACE, DBus::STRING, DBus::STRUCT, DBus::SignatureIterator::type(), DBus::UINT16, DBus::UINT32, and DBus::UINT64.

Referenced by DBus::MessageIterator::get_variant(), DBus::priv::VariantIterator::get_variant(), and remarshal().

createFromMessage()

DBus::Variant Variant::createFromMessage ( MessageIterator  iter )

static

Obsolete, do not call.

data_alignment()

int Variant::data_alignment

(

)

const

References m_dataAlignment.

Referenced by DBus::Marshaling::marshal(), DBus::MessageAppendIterator::operator<<(), and DBus::priv::VariantAppendIterator::operator<<().

marshaled()

const std::vector< uint8_t > * Variant::marshaled

(

)

const

References m_marshaled.

Referenced by DBus::Marshaling::marshal(), DBus::MessageAppendIterator::operator<<(), DBus::priv::VariantAppendIterator::operator<<(), and remarshal().

operator bool()

Variant::operator bool

(

)

operator DBus::Path()

Variant::operator DBus::Path

(

)

operator DBus::Signature()

Variant::operator DBus::Signature

(

)

operator double()

Variant::operator double

(

)

operator int16_t()

Variant::operator int16_t

(

)

operator int32_t()

Variant::operator int32_t

(

)

operator int64_t()

Variant::operator int64_t

(

)

operator std::map< Key, Data >()

template<typename Key , typename Data >

DBus::Variant::operator std::map< Key, Data > ( )

inline

operator std::string()

Variant::operator std::string

(

)

operator std::tuple< T... >()

template<typename... T>

DBus::Variant::operator std::tuple< T... > ( )

inline

References to_tuple().

operator std::vector< T >()

template<typename T >

DBus::Variant::operator std::vector< T > ( )

inline

operator uint16_t()

Variant::operator uint16_t

(

)

operator uint32_t()

Variant::operator uint32_t

(

)

operator uint64_t()

Variant::operator uint64_t

(

)

operator uint8_t()

Variant::operator uint8_t

(

)

operator=()

Variant & Variant::operator=

(

const Variant &

other

)

References m_currentType, m_dataAlignment, m_marshaled, and m_signature.

operator==()

bool Variant::operator==

(

const Variant &

other

)

const

References m_marshaled, and type().

recurseArray() [1/2]

void Variant::recurseArray ( MessageIterator  iter, Marshaling *  marshal  )

private

Obsolete, do not call.

recurseArray() [2/2]

void Variant::recurseArray ( SignatureIterator  iter, std::shared_ptr< Demarshaling >  demarshal, Marshaling *  marshal, const std::vector< int > &  filedescriptors, uint32_t  depth  )

private

References DBus::Marshaling::align(), DBus::TypeInfo::alignment(), DBus::default_endianess(), DBus::DICT_ENTRY, LOGGER_NAME, DBus::Marshaling::marshal(), DBus::Validator::maximum_message_depth(), DBus::SignatureIterator::recurse(), recurseDictEntry(), remarshal(), SIMPLELOGGER_TRACE, and DBus::SignatureIterator::type().

Referenced by createFromDemarshal(), and remarshal().

recurseDictEntry() [1/2]

void Variant::recurseDictEntry ( MessageIterator  iter, Marshaling *  marshal  )

private

Obsolete, do not call.

recurseDictEntry() [2/2]

void Variant::recurseDictEntry ( SignatureIterator  iter, std::shared_ptr< Demarshaling >  demarshal, Marshaling *  marshal, uint32_t  ending_offset, const std::vector< int > &  filedescriptors, uint32_t  depth  )

private

References DBus::Marshaling::align(), LOGGER_NAME, DBus::Validator::maximum_message_depth(), remarshal(), SIMPLELOGGER_TRACE, and DBus::SignatureIterator::type().

Referenced by recurseArray().

recurseStruct() [1/2]

void Variant::recurseStruct ( MessageIterator  iter, Marshaling *  marshal  )

private

Obsolete, do not call.

recurseStruct() [2/2]

void Variant::recurseStruct ( SignatureIterator  sigit, std::shared_ptr< Demarshaling >  demarshal, Marshaling *  marshal, const std::vector< int > &  filedescriptors, uint32_t  depth  )

private

References DBus::Marshaling::align(), DBus::SignatureIterator::is_valid(), DBus::Validator::maximum_message_depth(), remarshal(), and DBus::SignatureIterator::type().

Referenced by createFromDemarshal(), and remarshal().

remarshal()

void Variant::remarshal ( DataType  dt, SignatureIterator  sigit, std::shared_ptr< Demarshaling >  demarshal, Marshaling *  marshal, const std::vector< int > &  filedescriptors, uint32_t  depth  )

private

References DBus::Marshaling::align(), DBus::TypeInfo::alignment(), DBus::ARRAY, DBus::Signature::begin(), DBus::BOOLEAN, DBus::BYTE, createFromDemarshal(), DBus::DICT_ENTRY, DBus::DOUBLE, DBus::Signature::end(), DBus::INT16, DBus::INT32, DBus::INT64, DBus::Marshaling::marshal(), marshaled(), DBus::OBJECT_PATH, DBus::SignatureIterator::recurse(), recurseArray(), recurseStruct(), DBus::SIGNATURE, DBus::STRING, DBus::STRUCT, type(), DBus::UINT16, DBus::UINT32, DBus::UINT64, and DBus::VARIANT.

Referenced by recurseArray(), recurseDictEntry(), and recurseStruct().

signature()

DBus::Signature Variant::signature

(

)

const

References m_signature.

Referenced by DBus::Marshaling::marshal(), DBus::MessageAppendIterator::operator<<(), and DBus::priv::VariantIterator::VariantIterator().

to_bool()

bool Variant::to_bool

(

)

const

References DBus::BOOLEAN, DBus::priv::VariantIterator::get_bool(), and m_currentType.

to_double()

double Variant::to_double

(

)

const

References DBus::DOUBLE, DBus::priv::VariantIterator::get_double(), and m_currentType.

to_int16()

int16_t Variant::to_int16

(

)

const

References DBus::priv::VariantIterator::get_int16(), DBus::INT16, and m_currentType.

to_int32()

int32_t Variant::to_int32

(

)

const

References DBus::priv::VariantIterator::get_int32(), DBus::INT32, and m_currentType.

to_int64()

int64_t Variant::to_int64

(

)

const

References DBus::priv::VariantIterator::get_int64(), DBus::INT64, and m_currentType.

to_map()

template<typename Key , typename Value >

std::map<Key, Value> DBus::Variant::to_map ( )

inline

References DBus::ARRAY, and m_currentType.

to_path()

DBus::Path Variant::to_path

(

)

const

References DBus::priv::VariantIterator::get_string(), m_currentType, and DBus::OBJECT_PATH.

Referenced by DBus::CallMessage::path(), and DBus::SignalMessage::path().

to_signature()

DBus::Signature Variant::to_signature

(

)

const

References DBus::priv::VariantIterator::get_signature(), m_currentType, and DBus::SIGNATURE.

Referenced by DBus::Message::append_signature(), and DBus::Message::signature().

to_string()

std::string Variant::to_string

(

)

const

References DBus::priv::VariantIterator::get_string(), m_currentType, and DBus::STRING.

Referenced by DBus::CallMessage::interface_name(), DBus::SignalMessage::interface_name(), DBus::SignalMessage::member(), and DBus::ErrorMessage::name().

to_tuple()

template<typename ... T>

std::tuple<T...> DBus::Variant::to_tuple ( )

inline

References m_currentType, and DBus::STRUCT.

Referenced by operator std::tuple< T... >().

to_uint16()

uint16_t Variant::to_uint16

(

)

const

References DBus::priv::VariantIterator::get_uint16(), m_currentType, and DBus::UINT16.

to_uint32()

uint32_t Variant::to_uint32

(

)

const

References DBus::priv::VariantIterator::get_uint32(), m_currentType, and DBus::UINT32.

Referenced by DBus::Message::create_from_data(), DBus::ErrorMessage::reply_serial(), DBus::ReturnMessage::reply_serial(), and DBus::Message::serialize_to_vector().

to_uint64()

uint64_t Variant::to_uint64

(

)

const

References DBus::priv::VariantIterator::get_uint64(), m_currentType, and DBus::UINT64.

to_uint8()

uint8_t Variant::to_uint8

(

)

const

References DBus::BYTE, DBus::priv::VariantIterator::get_uint8(), and m_currentType.

to_vector()

template<typename T >

std::vector<T> DBus::Variant::to_vector ( )

inline

References DBus::ARRAY, and m_currentType.

type()

DBus::DataType Variant::type

(

)

const

References m_currentType.

Referenced by DBus::Message::append_signature(), DBus::CallMessage::interface_name(), DBus::SignalMessage::interface_name(), DBus::SignalMessage::member(), DBus::ErrorMessage::name(), DBus::MessageAppendIterator::operator<<(), DBus::priv::VariantAppendIterator::operator<<(), operator==(), DBus::CallMessage::path(), DBus::SignalMessage::path(), remarshal(), DBus::ErrorMessage::reply_serial(), DBus::ReturnMessage::reply_serial(), DBus::Message::serialize_to_vector(), and DBus::Message::signature().

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  os, const Variant &  var  )

friend

priv::VariantAppendIterator

friend class priv::VariantAppendIterator

friend

priv::VariantIterator

friend class priv::VariantIterator

friend

Member Data Documentation

m_currentType

DataType DBus::Variant::m_currentType

private

Referenced by createFromDemarshal(), DBus::priv::VariantAppendIterator::operator<<(), operator=(), to_bool(), to_double(), to_int16(), to_int32(), to_int64(), to_map(), to_path(), to_signature(), to_string(), to_tuple(), to_uint16(), to_uint32(), to_uint64(), to_uint8(), to_vector(), and type().

m_dataAlignment

int DBus::Variant::m_dataAlignment

private

Referenced by createFromDemarshal(), data_alignment(), and operator=().

m_marshaled

std::vector<uint8_t> DBus::Variant::m_marshaled

private

Referenced by createFromDemarshal(), marshaled(), operator=(), operator==(), Variant(), DBus::priv::VariantAppendIterator::VariantAppendIterator(), and DBus::priv::VariantIterator::VariantIterator().

m_signature

Signature DBus::Variant::m_signature

private

Referenced by createFromDemarshal(), DBus::priv::VariantAppendIterator::operator<<(), operator=(), and signature().

---

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

• variant.h
• variant.cpp