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1 /* |
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2 * Copyright 2006 Baylor University |
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3 * |
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4 * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 * you may not use this file except in compliance with the License. |
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6 * You may obtain a copy of the License at |
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7 * |
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8 * http://www.apache.org/licenses/LICENSE-2.0 |
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9 * |
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10 * Unless required by applicable law or agreed to in writing, software |
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11 * distributed under the License is distributed on an "AS IS" BASIS, |
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 * See the License for the specific language governing permissions and |
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14 * limitations under the License. |
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15 */ |
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16 |
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17 #ifndef _PROPHET_POINTER_LIST_H_ |
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18 #define _PROPHET_POINTER_LIST_H_ |
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19 |
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20 #include <vector> |
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21 |
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22 namespace prophet |
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23 { |
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24 |
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25 /** |
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26 * Auto deletes pointers in list destructor |
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27 * This object assumes ownership for member pointers |
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28 * Creates copies of members instead of copies of pointers to members |
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29 */ |
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30 template<class T> |
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31 class PointerList : public std::vector<T*> |
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32 { |
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33 public: |
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34 typedef std::vector<T*> List; |
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35 typedef typename std::vector<T*>::iterator iterator; |
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36 typedef typename std::vector<T*>::const_iterator const_iterator; |
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37 |
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38 /** |
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39 * Default constructor |
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40 */ |
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41 PointerList() |
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42 : std::vector<T*>() {} |
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43 |
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44 /** |
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45 * Copy constructor |
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46 */ |
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47 PointerList(const PointerList& a) |
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48 : std::vector<T*>() |
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49 { |
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50 clear(); |
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51 copy_from(a); |
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52 } |
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53 |
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54 /** |
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55 * Destructor |
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56 */ |
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57 virtual ~PointerList() |
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58 { |
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59 clear(); |
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60 } |
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61 |
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62 /** |
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63 * Assignment operator creates deep copy, not pointer copy |
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64 */ |
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65 PointerList& operator= (const PointerList& a) |
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66 { |
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67 clear(); |
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68 copy_from(a); |
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69 return *this; |
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70 } |
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71 |
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72 /** |
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73 * Deletes member pointed to by iterator, then removes pointer |
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74 */ |
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75 void erase(iterator i) |
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76 { |
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77 delete (*i); |
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78 List::erase(i); |
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79 } |
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80 |
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81 /** |
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82 * Delete all member variables, then remove pointers from |
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83 * container |
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84 */ |
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85 void clear() |
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86 { |
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87 free(); |
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88 List::clear(); |
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89 } |
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90 |
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91 protected: |
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92 /** |
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93 * Free memory pointed to by member variables |
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94 */ |
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95 void free() |
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96 { |
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97 for(iterator i = List::begin(); |
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98 i != List::end(); |
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99 i++) |
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100 { |
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101 delete *i; |
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102 } |
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103 } |
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104 /** |
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105 * Utility function to perform deep copy from peer object |
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106 */ |
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107 void copy_from(const PointerList& a) |
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108 { |
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109 for(const_iterator i = a.begin(); |
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110 i != a.end(); |
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111 i++) |
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112 { |
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113 push_back(new T(**i)); |
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114 } |
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115 } |
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116 }; // template PointerList<T> |
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117 |
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118 }; // namespace prophet |
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119 |
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120 #endif // _PROPHET_POINTER_LIST_H_ |