A dummy ConnectionWriter that consumes data without effect. More...

#include <yarp/os/NullConnectionWriter.h>

Inheritance diagram for yarp::os::NullConnectionWriter:

Public Member Functions
void	appendBlock (const char *data, size_t len) override
	Send a block of data to the network connection.

void	appendInt8 (std::int8_t data) override
	Send a representation of a 8-bit integer to the network connection.

void	appendInt16 (std::int16_t data) override
	Send a representation of a 16-bit integer to the network connection.

void	appendInt32 (std::int32_t data) override
	Send a representation of a 32-bit integer to the network connection.

void	appendInt64 (std::int64_t data) override
	Send a representation of a 64-bit integer to the network connection.

void	appendFloat32 (yarp::conf::float32_t data) override
	Send a representation of a 32-bit floating point number to the network connection.

void	appendFloat64 (yarp::conf::float64_t data) override
	Send a representation of a 64-bit floating point number to the network connection.

void	appendText (const std::string &str, const char terminate='\n') override
	Send a terminated string to the network connection.

void	appendExternalBlock (const char *data, size_t len) override
	Send a block of data to the network connection, without making a copy.

bool	isTextMode () const override
	Check if the connection is text mode.

bool	isBareMode () const override
	Check if the connection is bare mode.

void	declareSizes (int argc, int *argv) override
	If you can easily determine how many blocks there are in a message, call this first, before anything else.

void	setReplyHandler (PortReader &reader) override
	This sets a handler to deal with replies to the message.

void	setReference (Portable *obj) override
	Stores a direct pointer to the object being sent.

bool	convertTextMode () override
	Converts a standard description in binary into a textual description, if the connection is in text-mode.

bool	isValid () const override

bool	isActive () const override

bool	isError () const override

void	requestDrop () override
	Tag the connection to be dropped after the current message.

bool	isNull () const override

SizedWriter *	getBuffer () override

const SizedWriter *	getBuffer () const override

Public Member Functions inherited from yarp::os::ConnectionWriter
virtual	~ConnectionWriter ()
	Destructor.

void	appendString (const std::string &str)
	Send a string to the network connection.

Additional Inherited Members
Static Public Member Functions inherited from yarp::os::ConnectionWriter
static ConnectionWriter *	createBufferedConnectionWriter ()
	Create a connection writer implementation that stores to a buffer which can be read later using getBuffer()

static bool	writeToStream (PortWriter &portable, OutputStream &os)

Detailed Description

A dummy ConnectionWriter that consumes data without effect.

Definition at line 20 of file NullConnectionWriter.h.

Member Function Documentation

◆ appendBlock()

void yarp::os::NullConnectionWriter::appendBlock	(	const char *	data,
		size_t	len
	)

overridevirtual

Send a block of data to the network connection.

Since communication may not happen immediately, or may happen multiple times, a copy of this data is made. If you know the block of data will remain valid, and it is a large block of data, please call ConnectionWriter::appendExternalBlock instead.

Parameters

data	the start of the data block
len	the length of the data block

Implements yarp::os::ConnectionWriter.

Definition at line 9 of file NullConnectionWriter.cpp.

◆ appendExternalBlock()

void yarp::os::NullConnectionWriter::appendExternalBlock	(	const char *	data,
		size_t	len
	)

overridevirtual

Send a block of data to the network connection, without making a copy.

If you are not confident that the block of data will remain valid throughout transmission, call ConnectionWriter::appendBlock instead.

Parameters

data	the start of the data block
len	the length of the data block

Implements yarp::os::ConnectionWriter.

Definition at line 51 of file NullConnectionWriter.cpp.

◆ appendFloat32()

void yarp::os::NullConnectionWriter::appendFloat32 ( yarp::conf::float32_t data )

overridevirtual

Send a representation of a 32-bit floating point number to the network connection.

Parameters

data	the floating point number to send

Implements yarp::os::ConnectionWriter.

Definition at line 35 of file NullConnectionWriter.cpp.

◆ appendFloat64()

void yarp::os::NullConnectionWriter::appendFloat64 ( yarp::conf::float64_t data )

overridevirtual

Send a representation of a 64-bit floating point number to the network connection.

Parameters

data	the floating point number to send

Implements yarp::os::ConnectionWriter.

Definition at line 40 of file NullConnectionWriter.cpp.

◆ appendInt16()

void yarp::os::NullConnectionWriter::appendInt16 ( std::int16_t data )

overridevirtual

Send a representation of a 16-bit integer to the network connection.

Parameters

data	the integer to send

Implements yarp::os::ConnectionWriter.

Definition at line 20 of file NullConnectionWriter.cpp.

◆ appendInt32()

void yarp::os::NullConnectionWriter::appendInt32 ( std::int32_t data )

overridevirtual

Send a representation of a 32-bit integer to the network connection.

Parameters

data	the integer to send

Implements yarp::os::ConnectionWriter.

Definition at line 25 of file NullConnectionWriter.cpp.

◆ appendInt64()

void yarp::os::NullConnectionWriter::appendInt64 ( std::int64_t data )

overridevirtual

Send a representation of a 64-bit integer to the network connection.

Parameters

data	the integer to send

Implements yarp::os::ConnectionWriter.

Definition at line 30 of file NullConnectionWriter.cpp.

◆ appendInt8()

void yarp::os::NullConnectionWriter::appendInt8 ( std::int8_t data )

overridevirtual

Send a representation of a 8-bit integer to the network connection.

Parameters

data	the integer to send

Implements yarp::os::ConnectionWriter.

Definition at line 15 of file NullConnectionWriter.cpp.

◆ appendText()

void yarp::os::NullConnectionWriter::appendText	(	const std::string &	str,
		const char	terminate = `'\n'`
	)

overridevirtual

Send a terminated string to the network connection.

The lenght of string is not specified in advance, therefore the reader should read until the terminating character is found.

Parameters

str	the string to send
terminate	the terminating character to use

Implements yarp::os::ConnectionWriter.

Definition at line 45 of file NullConnectionWriter.cpp.

◆ convertTextMode()

bool yarp::os::NullConnectionWriter::convertTextMode ( )

overridevirtual

Converts a standard description in binary into a textual description, if the connection is in text-mode.

Useful if you only operate on the binary description usually, and just want to permit text mode for command-line interaction. If isTextMode would return false, no conversion is done.

Returns: true if the conversion was possible

Implements yarp::os::ConnectionWriter.

Definition at line 83 of file NullConnectionWriter.cpp.

◆ declareSizes()

void yarp::os::NullConnectionWriter::declareSizes	(	int	argc,
		int *	argv
	)

overridevirtual

If you can easily determine how many blocks there are in a message, call this first, before anything else.

This may improve efficiency in some situations.

Parameters

argc	Number of blocks
argv	An array of integers, giving the length of each block

Implements yarp::os::ConnectionWriter.

Definition at line 67 of file NullConnectionWriter.cpp.

◆ getBuffer() [1/2]

const yarp::os::SizedWriter * yarp::os::NullConnectionWriter::getBuffer ( ) const

overridevirtual

Returns: a buffer if one is present (const version).

Implements yarp::os::ConnectionWriter.

Definition at line 117 of file NullConnectionWriter.cpp.

◆ getBuffer() [2/2]

yarp::os::SizedWriter * yarp::os::NullConnectionWriter::getBuffer ( )

overridevirtual

Returns: a buffer if one is present.

Implements yarp::os::ConnectionWriter.

Definition at line 112 of file NullConnectionWriter.cpp.

◆ isActive()

bool yarp::os::NullConnectionWriter::isActive ( ) const

overridevirtual

Returns: true if the writer is active. Writers may become inactive if the connection they are associated with breaks.

Implements yarp::os::ConnectionWriter.

Definition at line 93 of file NullConnectionWriter.cpp.

◆ isBareMode()

bool yarp::os::NullConnectionWriter::isBareMode ( ) const

overridevirtual

Check if the connection is bare mode.

If it is, you are encouraged to omit type information from your serialization.

Returns: true if the connection is bare

Implements yarp::os::ConnectionWriter.

Definition at line 62 of file NullConnectionWriter.cpp.

◆ isError()

bool yarp::os::NullConnectionWriter::isError ( ) const

overridevirtual

Returns: true if the writer encountered an error. Writers can encounter an error if there is some data loss. For unreliable protocols like UDP/Multicast, where losses are not unexpected, this error flag will be reset for the next incoming message.

Implements yarp::os::ConnectionWriter.

Definition at line 98 of file NullConnectionWriter.cpp.

◆ isNull()

bool yarp::os::NullConnectionWriter::isNull ( ) const

overridevirtual

Returns: true if writer goes nowhere.

Reimplemented from yarp::os::ConnectionWriter.

Definition at line 107 of file NullConnectionWriter.cpp.

◆ isTextMode()

bool yarp::os::NullConnectionWriter::isTextMode ( ) const

overridevirtual

Check if the connection is text mode.

If it is, you are encouraged (but by no means required) to use a human-readable representation of your data structure.

Returns: true if the connection is text mode (as opposed to binary)

Implements yarp::os::ConnectionWriter.

Definition at line 57 of file NullConnectionWriter.cpp.

◆ isValid()

bool yarp::os::NullConnectionWriter::isValid ( ) const

overridevirtual

Returns: true if the writer is valid. A writer may be invalid if a connection has closed.

Implements yarp::os::ConnectionWriter.

Definition at line 88 of file NullConnectionWriter.cpp.

◆ requestDrop()

void yarp::os::NullConnectionWriter::requestDrop ( )

overridevirtual

Tag the connection to be dropped after the current message.

Implements yarp::os::ConnectionWriter.

Definition at line 103 of file NullConnectionWriter.cpp.

◆ setReference()

void yarp::os::NullConnectionWriter::setReference ( Portable * obj )

overridevirtual

Stores a direct pointer to the object being sent.

This is useful for local communication, to bypass serialization.

Implements yarp::os::ConnectionWriter.

Definition at line 78 of file NullConnectionWriter.cpp.

◆ setReplyHandler()

void yarp::os::NullConnectionWriter::setReplyHandler ( PortReader & reader )

overridevirtual

This sets a handler to deal with replies to the message.

The handler will be called once per connection. There will be problems for connections using carriers that don't support replies.

Parameters

reader the object that handles replies.

Implements yarp::os::ConnectionWriter.

Definition at line 73 of file NullConnectionWriter.cpp.

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

src/libYARP_os/src/yarp/os/NullConnectionWriter.h
src/libYARP_os/src/yarp/os/NullConnectionWriter.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ appendBlock()

◆ appendExternalBlock()

◆ appendFloat32()

◆ appendFloat64()

◆ appendInt16()

◆ appendInt32()

◆ appendInt64()

◆ appendInt8()

◆ appendText()

◆ convertTextMode()

◆ declareSizes()

◆ getBuffer() [1/2]

◆ getBuffer() [2/2]

◆ isActive()

◆ isBareMode()

◆ isError()

◆ isNull()

◆ isTextMode()

◆ isValid()

◆ requestDrop()

◆ setReference()

◆ setReplyHandler()