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1 #include <iostream> |
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2 #include <memory> |
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3 |
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4 #include <boost/shared_ptr.hpp> |
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5 |
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6 using namespace std; |
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7 |
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8 class Ex : public exception { |
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9 |
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10 typedef exception Parent; |
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11 |
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12 mutable |
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13 auto_ptr<string> uz; |
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14 public: |
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15 |
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16 // boost::shared_ptr<string> uz; |
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17 |
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18 Ex(const Ex &e) : Parent(e), uz(e.uz) {} |
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19 |
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20 explicit |
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21 Ex(const char *msg = 0) { |
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22 if( msg ) { |
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23 try { |
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24 uz.reset(new string); |
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25 *uz = msg; |
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26 } |
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27 catch(...) { |
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28 uz.reset(); |
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29 } |
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30 } |
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31 } |
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32 |
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33 virtual |
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34 const char* what() const throw() { |
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35 if( uz.get() ) |
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36 return uz->c_str(); |
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37 return "Kivetel"; |
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38 } |
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39 |
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40 virtual ~Ex() throw() {} |
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41 }; |
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42 |
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43 static void fn1() { |
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44 Ex e("alma"); |
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45 throw e; |
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46 } |
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47 |
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48 static |
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49 void fn2() { |
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50 throw Ex("korte"); |
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51 } |
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52 |
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53 int main() { |
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54 try { |
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55 fn1(); |
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56 } |
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57 catch(exception const &e) { |
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58 cerr << "Hiba: " << e.what() << endl; |
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59 } |
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60 |
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61 try { |
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62 fn2(); |
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63 } |
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64 catch(exception const &e) { |
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65 cerr << "Hiba: " << e.what() << endl; |
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66 } |
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67 |
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68 } |
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