00001 /* 00002 CLAW - a C++ Library Absolutely Wonderful 00003 00004 CLAW is a free library without any particular aim but being useful to 00005 anyone. 00006 00007 Copyright (C) 2005-2008 Julien Jorge 00008 00009 This library is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU Lesser General Public 00011 License as published by the Free Software Foundation; either 00012 version 2.1 of the License, or (at your option) any later version. 00013 00014 This library is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public 00020 License along with this library; if not, write to the Free Software 00021 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00022 00023 contact: julien_jorge@yahoo.fr 00024 */ 00030 #ifndef __CLAW_IT_INDEX_HPP__ 00031 #define __CLAW_IT_INDEX_HPP__ 00032 00033 #include <iostream> 00034 00035 namespace claw 00036 { 00042 template<class T> class it_index 00043 { 00044 private: 00046 T m_it; 00048 int m_index; 00049 00050 public: 00052 it_index() 00053 : m_it(), m_index() 00054 { } 00055 00061 it_index(const T& it, int index=0) 00062 : m_it(it), m_index(index) 00063 { } 00064 00069 it_index( const it_index<T>& that ) 00070 : m_it( that.m_it ), m_index( that.m_index ) 00071 { } 00072 00078 void set( const T& it, int index ) 00079 { 00080 m_it = it; 00081 m_index = index; 00082 } 00083 00084 bool operator<( const it_index<T>& that ) const 00085 { return m_index < that.m_index; } 00086 00087 bool operator<( const T& it ) const { return m_it < it; } 00088 bool operator<( int index ) const { return m_index < index; } 00089 00090 bool operator<=( const it_index<T>& that ) const 00091 { return (*this < that) || (*this == that); } 00092 bool operator<=( const T& it ) const { return m_it <= it; } 00093 bool operator<=( int index ) const { return m_index <= index; } 00094 00095 bool operator>( const it_index<T>& that ) const 00096 { return m_index > that.m_index; } 00097 bool operator>( const T& it ) const { return m_it > it; } 00098 bool operator>( int index ) const { return m_index > index; } 00099 00100 bool operator>=( const it_index<T>& that ) const 00101 { return (*this > that) || (*this == that); } 00102 bool operator>=( const T& it ) const { return m_it >= it; } 00103 bool operator>=( int index ) const { return m_index >= index; } 00104 00105 bool operator==( const it_index<T>& that ) const 00106 { return (m_it == that.m_it) && (m_index == that.m_index); } 00107 bool operator==( const T& it ) const { return m_it == it; } 00108 bool operator==( int index ) const { return m_index==index; } 00109 00110 bool operator!=( const it_index<T>& that ) const 00111 { return !(*this == *that); } 00112 bool operator!=( const T& it ) const { return m_it != it; } 00113 bool operator!=( int index ) const { return m_index!=index; } 00114 00115 it_index<T> operator+( int index ) const 00116 { return it_index<T>(m_it + index, m_index + index); } 00117 it_index<T> operator-( int index ) const 00118 { return it_index<T>(m_it - index, m_index - index); } 00119 it_index<T> operator*( int index ) const 00120 { return it_index<T>(m_it + (index-1) * m_index, m_index * index); } 00121 it_index<T> operator/( int index ) const 00122 { return it_index<T>(m_it - (m_index - m_index/index), m_index / index); } 00123 00124 typename T::value_type operator*() { return *m_it; } 00125 00126 // Préincrément 00127 it_index<T>& operator++() 00128 { 00129 ++m_it; 00130 ++m_index; 00131 return *this; 00132 } 00133 00134 // Postincrément 00135 it_index<T> operator++(int) 00136 { 00137 it_index<T> r(*this); 00138 ++(this); 00139 return r; 00140 } 00141 00142 // Préincrément 00143 it_index<T>& operator--() 00144 { 00145 --m_it; 00146 --m_index; 00147 return *this; 00148 } 00149 00150 // Postincrément 00151 it_index<T> operator--(int) 00152 { 00153 it_index<T> r(*this); 00154 --(this); 00155 return r; 00156 } 00157 00158 it_index<T>& operator+=( int index ) 00159 { 00160 m_it += index; 00161 m_index += index; 00162 return *this; 00163 } 00164 00165 it_index<T>& operator-=( int index ) 00166 { 00167 m_it -= index; 00168 m_index -= index; 00169 return *this; 00170 } 00171 00172 it_index<T>& operator*=( int index ) 00173 { 00174 m_it += (index-1) * m_index; 00175 m_index *= index; 00176 return *this; 00177 } 00178 00179 it_index<T>& operator/=( int index ) 00180 { 00181 m_it -= m_index - m_index/index; 00182 m_index /= index; 00183 return *this; 00184 } 00185 00186 operator int() const { return m_index; } 00187 operator T() const { return m_it; } 00188 00189 }; // it_index; 00190 00191 } // namespace claw 00192 00193 #endif // __CLAW_IT_INDEX_HPP__