1 /* -*- C++ -*- |
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2 * src/lemon/error.h - Part of LEMON, a generic C++ optimization library |
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3 * |
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4 * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 * (Egervary Combinatorial Optimization Research Group, EGRES). |
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6 * |
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7 * Permission to use, modify and distribute this software is granted |
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8 * provided that this copyright notice appears in all copies. For |
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9 * precise terms see the accompanying LICENSE file. |
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10 * |
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11 * This software is provided "AS IS" with no warranty of any kind, |
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12 * express or implied, and with no claim as to its suitability for any |
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13 * purpose. |
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14 * |
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15 */ |
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16 |
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17 #ifndef LEMON_ERROR_H |
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18 #define LEMON_ERROR_H |
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19 |
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20 //! \ingroup misc |
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21 //! \file |
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22 //! \brief Basic error handling (signaling) routines. |
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23 |
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24 #include <exception> |
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25 #include <string> |
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26 #include <sstream> |
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27 |
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28 |
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29 namespace lemon { |
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30 |
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31 /** |
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32 * \brief Generic exception class. |
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33 * |
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34 * \todo Do we need this? |
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35 * |
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36 * \todo Don't we need different kind of exceptions for different kind |
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37 * of errors? |
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38 * Shouldn't we use \<stdexcept\> instead? |
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39 */ |
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40 class Exception : public std::exception { |
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41 protected: |
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42 std::ostringstream buf; |
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43 public: |
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44 Exception() {} |
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45 explicit Exception(const std::string &s) { buf << s; } |
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46 Exception(const Exception &e) : std::exception() { |
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47 buf << e.buf.str(); |
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48 } |
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49 virtual ~Exception() throw() {} |
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50 |
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51 virtual const char* what() const throw() { |
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52 return buf.str().c_str(); |
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53 } |
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54 |
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55 Exception& operator<<(std::string const& s) { buf << s; return *this; } |
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56 Exception& operator<<(char const *s) { buf << s; return *this; } |
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57 Exception& operator<<(int i) { buf << i; return *this; } |
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58 }; |
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59 |
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60 /** |
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61 * \brief Generic error signaling function. |
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62 * |
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63 * \todo Do we really need this? Is it helpful? |
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64 */ |
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65 inline void fault(const std::string &msg) { |
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66 throw Exception(msg); |
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67 } |
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68 |
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69 /** |
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70 * \brief Macro for mark not yet implemented features. |
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71 * |
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72 * \todo Is this the right place for this? It should be used only in |
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73 * modules under development. |
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74 */ |
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75 |
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76 # define FIXME(msg) \ |
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77 do { throw ::lemon::Exception() << "FIXME: " msg " (in: " \ |
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78 __FILE__ ", " << __LINE__ << ")"; \ |
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79 } while(false) |
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80 |
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81 } |
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82 #endif // LEMON_ERROR_H |
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