dg::Message Class Reference

small class holding a stringstream More...

Public Member Functions
	Message ()
	construct an empty message
	Message (const char *file, const int line)
	Initiate message with the file and line it comes from.
	Message (std::string m)
	Construct message with string.
	~Message ()
template<class T >
Message &	operator<< (const T &value)
	add values to the message stream
std::string	str () const
	return the message contained in the stream as a string

Friends
std::ostream &	operator<< (std::ostream &os, const Message &m)

Detailed Description

small class holding a stringstream

try{ throw Error(Message(_ping_)<<"This is error number "<<number);}
catch( Error& m) {std::cerr << m.what();}

Constructor & Destructor Documentation

Message() [1/3]

dg::Message::Message ( )

inline

construct an empty message

Message() [2/3]

dg::Message::Message ( const char * file, const int line )

inline

Initiate message with the file and line it comes from.

Parameters

file	The file in which the exception is thrown (contained in the predefined Macro __FILE__ )
line	The line in which the exception is thrown (contained in the predefined Macro __LINE__ )

Note

The Macro _ping_ expands to __FILE__, __LINE__ _

Message() [3/3]

dg::Message::Message ( std::string m )

inline

Construct message with string.

Parameters

m	puts m into stream

~Message()

dg::Message::~Message ( )

inline

Member Function Documentation

operator<<()

template<class T >

Message & dg::Message::operator<< ( const T & value )

inline

add values to the message stream

Note

you can't use std::endl or std::flush in here

str()

std::string dg::Message::str ( ) const

inline

return the message contained in the stream as a string

Friends And Related Symbol Documentation

operator<<

std::ostream & operator<< ( std::ostream & os, const Message & m )

friend

put the sringstream string into the ostream

Note

same as os<<m.str();

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

• backend/exceptions.h