1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/lemon/error.h	Mon Nov 15 13:10:35 2004 +0000
     1.3 @@ -0,0 +1,81 @@
     1.4 +/* -*- C++ -*-
     1.5 + * src/lemon/error.h - Part of LEMON, a generic C++ optimization library
     1.6 + *
     1.7 + * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
     1.8 + * (Egervary Combinatorial Optimization Research Group, EGRES).
     1.9 + *
    1.10 + * Permission to use, modify and distribute this software is granted
    1.11 + * provided that this copyright notice appears in all copies. For
    1.12 + * precise terms see the accompanying LICENSE file.
    1.13 + *
    1.14 + * This software is provided "AS IS" with no warranty of any kind,
    1.15 + * express or implied, and with no claim as to its suitability for any
    1.16 + * purpose.
    1.17 + *
    1.18 + */
    1.19 +
    1.20 +#ifndef LEMON_ERROR_H
    1.21 +#define LEMON_ERROR_H
    1.22 +
    1.23 +//! \ingroup misc
    1.24 +//! \file
    1.25 +//! \brief Basic error handling (signaling) routines.
    1.26 +
    1.27 +#include <exception>
    1.28 +#include <string>
    1.29 +#include <sstream>
    1.30 +
    1.31 +
    1.32 +namespace lemon {
    1.33 +
    1.34 +  /**
    1.35 +   * \brief Generic exception class.
    1.36 +   *
    1.37 +   * \todo Do we need this?
    1.38 +   *
    1.39 +   * \todo Don't we need different kind of exceptions for different kind
    1.40 +   * of errors?
    1.41 +   * Shouldn't we use \<stdexcept\> instead?
    1.42 +   */
    1.43 +  class Exception : public std::exception {
    1.44 +  protected:
    1.45 +    std::ostringstream buf;
    1.46 +  public:
    1.47 +    Exception() {}
    1.48 +    explicit Exception(const std::string &s) { buf << s; }
    1.49 +    Exception(const Exception &e) : std::exception() {
    1.50 +      buf << e.buf.str();
    1.51 +    }
    1.52 +    virtual ~Exception() throw() {}
    1.53 +    
    1.54 +    virtual const char* what() const throw() {
    1.55 +      return buf.str().c_str();
    1.56 +    }
    1.57 +
    1.58 +    template <typename T>
    1.59 +    Exception& operator<<(T const& t) { buf << t; return *this; }
    1.60 +  };
    1.61 +
    1.62 +  /**
    1.63 +   * \brief Generic error signaling function.
    1.64 +   *
    1.65 +   * \todo Do we really need this? Is it helpful?
    1.66 +   */
    1.67 +  inline void fault(const std::string &msg) {
    1.68 +    throw Exception(msg);
    1.69 +  }
    1.70 +
    1.71 +  /**
    1.72 +   * \brief Macro for mark not yet implemented features.
    1.73 +   *
    1.74 +   * \todo Is this the right place for this? It should be used only in
    1.75 +   * modules under development.
    1.76 +   */
    1.77 +
    1.78 +# define FIXME(msg) \
    1.79 +    do { throw ::lemon::Exception() << "FIXME: " msg " (in: "    \
    1.80 +      __FILE__ ", " << __LINE__ << ")";                          \
    1.81 +    } while(false)
    1.82 +
    1.83 +}
    1.84 +#endif // LEMON_ERROR_H