1 | // ==================================================================== // |
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2 | // // |
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3 | // File : arbtools.h // |
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4 | // Purpose : small general purpose helper classes // |
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5 | // // |
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6 | // // |
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7 | // Coded by Ralf Westram (coder@reallysoft.de) in August 2003 // |
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8 | // Copyright Department of Microbiology (Technical University Munich) // |
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9 | // // |
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10 | // Visit our web site at: http://www.arb-home.de/ // |
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11 | // // |
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12 | // // |
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13 | // ==================================================================== // |
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14 | |
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15 | #ifndef ARBTOOLS_H |
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16 | #define ARBTOOLS_H |
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17 | |
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18 | #ifndef _GLIBCXX_NEW |
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19 | #include <new> |
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20 | #endif |
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21 | |
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22 | // Base class for classes that may not be copied, neither via copy |
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23 | // constructor or assignment operator. |
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24 | |
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25 | class Noncopyable { |
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26 | Noncopyable(const Noncopyable&); |
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27 | Noncopyable& operator=(const Noncopyable&); |
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28 | public: |
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29 | Noncopyable() {} |
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30 | }; |
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31 | |
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32 | // helper macros to make inplace-reconstruction less obfuscated |
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33 | #define INPLACE_RECONSTRUCT(type,this) \ |
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34 | do { \ |
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35 | (this)->~type(); \ |
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36 | ::new(this) type(); \ |
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37 | } while(0) |
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38 | |
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39 | #define INPLACE_COPY_RECONSTRUCT(type,this,other) \ |
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40 | do { \ |
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41 | (this)->~type(); \ |
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42 | ::new(this) type(other); \ |
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43 | } while(0) |
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44 | |
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45 | #define DECLARE_ASSIGNMENT_OPERATOR(T) \ |
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46 | T& operator = (const T& other) { \ |
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47 | INPLACE_COPY_RECONSTRUCT(T, this, other); \ |
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48 | return *this; \ |
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49 | } |
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50 | |
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51 | |
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52 | template<typename T> |
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53 | class isBelow { |
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54 | T t; |
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55 | public: |
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56 | isBelow(T t_) : t(t_) {} |
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57 | bool operator()(T o) { return o<t; } |
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58 | }; |
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59 | |
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60 | template<typename T> |
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61 | class isAbove { |
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62 | T t; |
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63 | public: |
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64 | isAbove(T t_) : t(t_) {} |
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65 | bool operator()(T o) { return o>t; } |
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66 | }; |
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67 | |
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68 | #define DEFINE_NAMED_ITERATORS(type,name) \ |
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69 | typedef type::iterator name##Iter; \ |
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70 | typedef type::const_iterator name##CIter; \ |
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71 | typedef type::reverse_iterator name##RIter; \ |
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72 | typedef type::const_reverse_iterator name##CRIter |
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73 | |
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74 | #define DEFINE_ITERATORS(type) DEFINE_NAMED_ITERATORS(type,type) |
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75 | |
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76 | template<typename T> |
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77 | class LocallyModify { |
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78 | T& var; |
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79 | T prevValue; |
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80 | public: |
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81 | LocallyModify(T& var_, T localValue) : var(var_), prevValue(var) { var = localValue; } |
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82 | ~LocallyModify() { var = prevValue; } |
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83 | |
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84 | T old_value() const { return prevValue; } |
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85 | }; |
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86 | |
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87 | #else |
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88 | #error arbtools.h included twice |
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89 | #endif // ARBTOOLS_H |
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90 | |
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