| 1 /* |
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| 2 Copyright 2012-2014 Santeri Piippo |
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| 3 All rights reserved. |
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| 4 |
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| 5 Redistribution and use in source and binary forms, with or without |
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| 6 modification, are permitted provided that the following conditions |
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| 7 are met: |
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| 8 |
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| 9 1. Redistributions of source code must retain the above copyright |
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| 10 notice, this list of conditions and the following disclaimer. |
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| 11 2. Redistributions in binary form must reproduce the above copyright |
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| 12 notice, this list of conditions and the following disclaimer in the |
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| 13 documentation and/or other materials provided with the distribution. |
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| 14 3. The name of the author may not be used to endorse or promote products |
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| 15 derived from this software without specific prior written permission. |
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| 16 |
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| 17 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 */ |
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| 28 |
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| 29 #ifndef BOTC_CONTAINERS_H |
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| 30 #define BOTC_CONTAINERS_H |
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| 31 |
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| 32 #include <cassert> |
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| 33 #include <algorithm> |
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| 34 #include <deque> |
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| 35 #include <initializer_list> |
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| 36 |
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| 37 template<typename T> |
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| 38 class List |
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| 39 { |
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| 40 public: |
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| 41 using WrappedList = typename std::deque<T>; |
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| 42 using Iterator = typename WrappedList::iterator; |
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| 43 using ConstIterator = typename WrappedList::const_iterator; |
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| 44 using ReverseIterator = typename WrappedList::reverse_iterator; |
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| 45 using ConstReverseIterator = typename WrappedList::const_reverse_iterator; |
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| 46 using ValueType = T; |
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| 47 using Self = List<T>; |
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| 48 |
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| 49 // ===================================================================== |
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| 50 // |
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| 51 List() {} |
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| 52 |
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| 53 // ===================================================================== |
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| 54 // |
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| 55 List (std::initializer_list<ValueType> vals) |
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| 56 { |
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| 57 m_data = vals; |
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| 58 } |
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| 59 |
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| 60 // ===================================================================== |
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| 61 // |
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| 62 List (const WrappedList& a) : |
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| 63 m_data (a) {} |
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| 64 |
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| 65 // ===================================================================== |
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| 66 // |
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| 67 Iterator begin() |
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| 68 { |
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| 69 return m_data.begin(); |
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| 70 } |
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| 71 |
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| 72 // ===================================================================== |
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| 73 // |
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| 74 ConstIterator begin() const |
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| 75 { |
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| 76 return m_data.cbegin(); |
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| 77 } |
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| 78 |
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| 79 // ===================================================================== |
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| 80 // |
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| 81 Iterator end() |
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| 82 { |
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| 83 return m_data.end(); |
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| 84 } |
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| 85 |
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| 86 // ===================================================================== |
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| 87 // |
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| 88 ConstIterator end() const |
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| 89 { |
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| 90 return m_data.cend(); |
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| 91 } |
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| 92 |
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| 93 // ===================================================================== |
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| 94 // |
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| 95 ReverseIterator rbegin() |
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| 96 { |
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| 97 return m_data.rbegin(); |
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| 98 } |
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| 99 |
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| 100 // ===================================================================== |
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| 101 // |
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| 102 ConstReverseIterator crbegin() const |
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| 103 { |
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| 104 return m_data.crbegin(); |
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| 105 } |
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| 106 |
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| 107 // ===================================================================== |
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| 108 // |
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| 109 ReverseIterator rend() |
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| 110 { |
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| 111 return m_data.rend(); |
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| 112 } |
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| 113 |
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| 114 // ===================================================================== |
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| 115 // |
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| 116 ConstReverseIterator crend() const |
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| 117 { |
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| 118 return m_data.crend(); |
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| 119 } |
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| 120 |
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| 121 // ===================================================================== |
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| 122 // |
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| 123 inline void removeAt (int pos) |
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| 124 { |
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| 125 assert (pos < size()); |
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| 126 m_data.erase (m_data.begin() + pos); |
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| 127 } |
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| 128 |
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| 129 // ===================================================================== |
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| 130 // |
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| 131 ValueType& prepend (const ValueType& value) |
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| 132 { |
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| 133 m_data.push_front (value); |
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| 134 return m_data[0]; |
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| 135 } |
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| 136 |
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| 137 // ===================================================================== |
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| 138 // |
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| 139 ValueType& append (const ValueType& value) |
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| 140 { |
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| 141 m_data.push_back (value); |
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| 142 return m_data[m_data.size() - 1]; |
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| 143 } |
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| 144 |
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| 145 // ===================================================================== |
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| 146 // |
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| 147 void merge (const Self& other) |
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| 148 { |
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| 149 resize (size() + other.size()); |
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| 150 std::copy (other.begin(), other.end(), begin() + other.size()); |
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| 151 } |
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| 152 |
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| 153 // ===================================================================== |
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| 154 // |
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| 155 bool pop (T& val) |
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| 156 { |
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| 157 if (isEmpty()) |
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| 158 return false; |
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| 159 |
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| 160 val = m_data[size() - 1]; |
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| 161 m_data.erase (m_data.end() - 1); |
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| 162 return true; |
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| 163 } |
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| 164 |
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| 165 // ===================================================================== |
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| 166 // |
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| 167 Self& operator<< (const T& value) |
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| 168 { |
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| 169 append (value); |
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| 170 return *this; |
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| 171 } |
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| 172 |
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| 173 // ===================================================================== |
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| 174 // |
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| 175 void operator<< (const Self& vals) |
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| 176 { |
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| 177 merge (vals); |
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| 178 } |
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| 179 |
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| 180 // ===================================================================== |
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| 181 // |
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| 182 bool operator>> (T& value) |
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| 183 { |
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| 184 return pop (value); |
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| 185 } |
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| 186 |
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| 187 // ===================================================================== |
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| 188 // |
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| 189 Self reverse() const |
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| 190 { |
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| 191 Self rev; |
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| 192 |
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| 193 for (const T & val : *this) |
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| 194 val >> rev; |
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| 195 |
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| 196 return rev; |
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| 197 } |
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| 198 |
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| 199 // ===================================================================== |
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| 200 // |
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| 201 void clear() |
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| 202 { |
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| 203 m_data.clear(); |
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| 204 } |
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| 205 |
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| 206 // ===================================================================== |
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| 207 // |
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| 208 void insert (int pos, const ValueType& value) |
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| 209 { |
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| 210 m_data.insert (m_data.begin() + pos, value); |
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| 211 } |
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| 212 |
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| 213 // ===================================================================== |
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| 214 // |
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| 215 void removeDuplicates() |
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| 216 { |
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| 217 // Remove duplicate entries. For this to be effective, the vector must be |
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| 218 // sorted first. |
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| 219 sort(); |
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| 220 Iterator pos = std::unique (begin(), end()); |
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| 221 resize (std::distance (begin(), pos)); |
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| 222 } |
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| 223 |
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| 224 // ===================================================================== |
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| 225 // |
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| 226 int size() const |
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| 227 { |
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| 228 return m_data.size(); |
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| 229 } |
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| 230 |
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| 231 // ===================================================================== |
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| 232 // |
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| 233 ValueType& operator[] (int n) |
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| 234 { |
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| 235 assert (n < size()); |
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| 236 return m_data[n]; |
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| 237 } |
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| 238 |
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| 239 // ===================================================================== |
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| 240 // |
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| 241 const ValueType& operator[] (int n) const |
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| 242 { |
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| 243 assert (n < size()); |
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| 244 return m_data[n]; |
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| 245 } |
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| 246 |
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| 247 // ===================================================================== |
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| 248 // |
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| 249 void resize (int size) |
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| 250 { |
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| 251 m_data.resize (size); |
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| 252 } |
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| 253 |
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| 254 // ===================================================================== |
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| 255 // |
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| 256 void sort() |
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| 257 { |
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| 258 std::sort (begin(), end()); |
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| 259 } |
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| 260 |
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| 261 // ===================================================================== |
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| 262 // |
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| 263 int find (const ValueType& needle) const |
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| 264 { |
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| 265 int i = 0; |
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| 266 |
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| 267 for (const ValueType& hay : *this) |
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| 268 { |
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| 269 if (hay == needle) |
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| 270 return i; |
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| 271 |
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| 272 i++; |
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| 273 } |
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| 274 |
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| 275 return -1; |
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| 276 } |
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| 277 |
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| 278 // ===================================================================== |
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| 279 // |
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| 280 void removeOne (const ValueType& it) |
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| 281 { |
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| 282 int idx; |
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| 283 |
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| 284 if ((idx = find (it)) != -1) |
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| 285 removeAt (idx); |
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| 286 } |
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| 287 |
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| 288 // ===================================================================== |
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| 289 // |
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| 290 inline bool isEmpty() const |
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| 291 { |
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| 292 return size() == 0; |
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| 293 } |
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| 294 |
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| 295 // ===================================================================== |
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| 296 // |
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| 297 Self splice (int a, int b) const |
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| 298 { |
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| 299 assert (a >= 0 && b >= 0 && a < size() && b < size() && a <= b); |
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| 300 Self result; |
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| 301 |
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| 302 for (int i = a; i <= b; ++i) |
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| 303 result << operator[] (i); |
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| 304 |
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| 305 return result; |
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| 306 } |
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| 307 |
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| 308 // ===================================================================== |
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| 309 // |
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| 310 inline const WrappedList& deque() const |
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| 311 { |
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| 312 return m_data; |
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| 313 } |
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| 314 |
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| 315 // ===================================================================== |
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| 316 // |
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| 317 inline const ValueType& first() const |
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| 318 { |
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| 319 return *m_data.begin(); |
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| 320 } |
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| 321 |
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| 322 // ===================================================================== |
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| 323 // |
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| 324 inline const ValueType& last() const |
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| 325 { |
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| 326 return *(m_data.end() - 1); |
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| 327 } |
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| 328 |
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| 329 // ===================================================================== |
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| 330 // |
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| 331 inline bool contains (const ValueType& a) const |
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| 332 { |
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| 333 return find (a) != -1; |
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| 334 } |
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| 335 |
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| 336 // ===================================================================== |
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| 337 // |
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| 338 Self operator+ (const Self& other) const |
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| 339 { |
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| 340 Self out (*this); |
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| 341 out.merge (other); |
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| 342 return out; |
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| 343 } |
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| 344 |
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| 345 private: |
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| 346 WrappedList m_data; |
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| 347 }; |
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| 348 |
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| 349 // ============================================================================= |
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| 350 // |
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| 351 template<typename T> |
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| 352 List<T>& operator>> (const T& value, List<T>& haystack) |
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| 353 { |
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| 354 haystack.prepend (value); |
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| 355 return haystack; |
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| 356 } |
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| 357 |
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| 358 #endif // BOTC_CONTAINERS_H |
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