exceptions.hh File Reference

A few common exception classes. More...

#include <string>
#include <sstream>

Go to the source code of this file.

Classes
class	hdnum::Exception
	Base class for Exceptions. More...
class	hdnum::IOError
	Default exception class for I/O errors. More...
class	hdnum::MathError
	Default exception class for mathematical errors. More...
class	hdnum::RangeError
	Default exception class for range errors. More...
class	hdnum::NotImplemented
	Default exception for dummy implementations. More...
class	hdnum::SystemError
	Default exception class for OS errors. More...
class	hdnum::OutOfMemoryError
	Default exception if memory allocation fails. More...
class	hdnum::InvalidStateException
	Default exception if a function was called while the object is not in a valid state for that function. More...
class	hdnum::ErrorException
	General Error. More...

Macros
#define	THROWSPEC(E)   #E << ": "
#define	HDNUM_THROW(E, m)
#define	HDNUM_ERROR(m)

Functions
std::ostream &	hdnum::operator<< (std::ostream &stream, const Exception &e)

Detailed Description

A few common exception classes.

This file defines a common framework for generating exception subclasses and to throw them in a simple manner. Taken from the DUNE project www.dune-project.org

Macro Definition Documentation

HDNUM_ERROR

#define HDNUM_ERROR

(

m

)

Value:

        do { hdnum::ErrorException th__ex; std::ostringstream th__out;          \
        th__out << THROWSPEC(hdnum::ErrorException) << m; \
        th__ex.message(th__out.str()); \
        std::cout << th__ex.what() << std::endl; \
        throw th__ex;                              \
  } while (0)

HDNUM_THROW

#define HDNUM_THROW	(		E,
			m )

Value:

        do { E th__ex; std::ostringstream th__out;              \
        th__out << THROWSPEC(E) << m; th__ex.message(th__out.str()); throw th__ex; \
  } while (0)

Macro to throw an exception

Parameters

E	exception class derived from Dune::Exception
m	reason for this exception in ostream-notation

Example:

    if (filehandle == 0)
DUNE_THROW(FileError, "Could not open " << filename << " for reading!")

DUNE_THROW automatically adds information about the exception thrown to the text. If DUNE_DEVEL_MODE is defined more detail about the function where the exception happened is included. This mode can be activated via the --enable-dunedevel switch of ./configure