1 | #ifndef _theplu_yat_utility_concept_check_ |
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2 | #define _theplu_yat_utility_concept_check_ |
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3 | |
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4 | // $Id: concept_check.h 2338 2010-10-16 05:00:12Z peter $ |
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5 | |
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6 | /* |
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7 | Copyright (C) 2010 Peter Johansson |
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8 | |
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9 | This file is part of the yat library, http://dev.thep.lu.se/yat |
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10 | |
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11 | The yat library is free software; you can redistribute it and/or |
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12 | modify it under the terms of the GNU General Public License as |
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13 | published by the Free Software Foundation; either version 3 of the |
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14 | License, or (at your option) any later version. |
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15 | |
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16 | The yat library is distributed in the hope that it will be useful, |
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17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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19 | General Public License for more details. |
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20 | |
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21 | You should have received a copy of the GNU General Public License |
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22 | along with yat. If not, see <http://www.gnu.org/licenses/>. |
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23 | */ |
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24 | |
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25 | #include "iterator_traits.h" |
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26 | |
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27 | #include <boost/concept_archetype.hpp> |
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28 | #include <boost/concept_check.hpp> |
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29 | |
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30 | namespace theplu { |
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31 | namespace yat { |
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32 | namespace utility { |
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33 | |
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34 | /** |
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35 | \brief Concept check for \ref concept_container_2d |
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36 | |
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37 | This class is intended to be used in a <a |
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38 | href="\boost_url/concept_check/using_concept_check.htm"> |
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39 | BOOST_CONCEPT_ASSERT </a> |
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40 | |
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41 | \code |
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42 | template<class T> |
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43 | void some_function(const T& t) |
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44 | { |
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45 | BOOST_CONCEPT_ASSERT((Container2D<T>)); |
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46 | ... |
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47 | } |
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48 | \endcode |
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49 | |
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50 | \since New in yat 0.7 |
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51 | */ |
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52 | template <class T> |
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53 | class Container2D |
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54 | { |
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55 | public: |
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56 | /// value_type |
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57 | typedef typename T::value_type value_type; |
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58 | /// const_reference |
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59 | typedef typename T::const_reference const_reference; |
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60 | /// const_iterator |
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61 | typedef typename T::const_iterator const_iterator; |
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62 | /// const_row_iterator |
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63 | typedef typename T::const_row_iterator const_row_iterator; |
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64 | /// const_column_iterator |
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65 | typedef typename T::const_column_iterator const_column_iterator; |
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66 | |
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67 | /** |
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68 | \brief function doing the concept test |
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69 | */ |
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70 | BOOST_CONCEPT_USAGE(Container2D) |
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71 | { |
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72 | const_iterator iter_ = t_.begin(); |
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73 | iter_ = t_.end(); |
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74 | const_row_iterator row_iter_ = t_.begin_row(0); |
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75 | row_iter_ = t_.end_row(0); |
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76 | const_column_iterator col_iter_ = t_.begin_column(0); |
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77 | col_iter_ = t_.end_column(0); |
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78 | const_reference r = t_(0,0); |
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79 | value_ = r; |
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80 | size_t n = t_.rows(); |
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81 | n = t_.columns(); |
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82 | BOOST_CONCEPT_ASSERT((boost::RandomAccessIterator<const_iterator>)); |
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83 | BOOST_CONCEPT_ASSERT((boost::RandomAccessIterator<const_row_iterator>)); |
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84 | BOOST_CONCEPT_ASSERT((boost::RandomAccessIterator<const_column_iterator>)); |
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85 | } |
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86 | |
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87 | private: |
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88 | T t_; |
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89 | value_type value_; |
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90 | }; |
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91 | |
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92 | /** |
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93 | \brief Concept check for \ref concept_mutable_container_2d |
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94 | |
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95 | This class is intended to be used in a <a |
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96 | href="\boost_url/concept_check/using_concept_check.htm"> |
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97 | BOOST_CONCEPT_ASSERT </a> |
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98 | |
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99 | \code |
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100 | template<class T> |
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101 | void some_function(const T& t) |
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102 | { |
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103 | BOOST_CONCEPT_ASSERT((Mutable_Container2D<T>)); |
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104 | ... |
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105 | } |
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106 | \endcode |
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107 | |
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108 | \since New in yat 0.7 |
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109 | */ |
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110 | template <class T> |
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111 | class Mutable_Container2D : public Container2D<T> |
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112 | { |
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113 | public: |
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114 | /// reference |
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115 | typedef typename T::reference reference; |
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116 | /// iterator |
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117 | typedef typename T::iterator iterator; |
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118 | /// row_iterator |
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119 | typedef typename T::row_iterator row_iterator; |
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120 | /// column_iterator |
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121 | typedef typename T::column_iterator column_iterator; |
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122 | |
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123 | /** |
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124 | \brief function doing the concept test |
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125 | */ |
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126 | BOOST_CONCEPT_USAGE(Mutable_Container2D) |
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127 | { |
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128 | iterator iter_ = t_.begin(); |
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129 | iter_ = t_.end(); |
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130 | row_iterator row_iter_ = t_.begin_row(0); |
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131 | row_iter_ = t_.end_row(0); |
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132 | column_iterator col_iter_ = t_.begin_column(0); |
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133 | col_iter_ = t_.end_column(0); |
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134 | reference r = t_(0,0); |
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135 | t_(0,0) = r; |
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136 | using boost::Mutable_RandomAccessIterator; // just to avoid long lines |
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137 | BOOST_CONCEPT_ASSERT((Mutable_RandomAccessIterator<iterator>)); |
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138 | BOOST_CONCEPT_ASSERT((Mutable_RandomAccessIterator<row_iterator>)); |
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139 | BOOST_CONCEPT_ASSERT((Mutable_RandomAccessIterator<column_iterator>)); |
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140 | } |
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141 | private: |
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142 | T t_; |
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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 | \brief Concept check for \trivial_iterator |
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148 | |
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149 | This class is intended to be used in a <a |
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150 | href="\boost_url/concept_check/using_concept_check.htm"> |
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151 | BOOST_CONCEPT_ASSERT </a> |
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152 | |
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153 | \code |
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154 | template<class Iterator> |
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155 | void some_function(const Iterator& it) |
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156 | { |
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157 | BOOST_CONCEPT_ASSERT((TrivialIterator<Iterator>)); |
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158 | ... |
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159 | } |
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160 | \endcode |
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161 | |
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162 | \since New in yat 0.7 |
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163 | */ |
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164 | template <class T> |
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165 | class TrivialIterator |
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166 | : public boost::Assignable<T> |
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167 | , public boost::EqualityComparable<T> |
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168 | , public boost::DefaultConstructible<T> |
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169 | |
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170 | { |
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171 | public: |
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172 | /// iterator_category |
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173 | typedef typename std::iterator_traits<T>::iterator_category iterator_category; |
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174 | /// value_type |
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175 | typedef typename std::iterator_traits<T>::value_type value_type; |
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176 | /// difference_type |
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177 | typedef typename std::iterator_traits<T>::difference_type difference_type; |
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178 | /// pointer |
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179 | typedef typename std::iterator_traits<T>::pointer pointer; |
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180 | /// reference |
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181 | typedef typename std::iterator_traits<T>::reference reference; |
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182 | |
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183 | /** |
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184 | \brief function doing the concept test |
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185 | */ |
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186 | BOOST_CONCEPT_USAGE(TrivialIterator) |
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187 | { |
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188 | T t; |
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189 | value_ = *t; |
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190 | } |
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191 | private: |
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192 | value_type value_; |
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193 | }; |
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194 | |
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195 | /** |
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196 | \brief Concept check for \ref concept_data_iterator |
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197 | |
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198 | This class is intended to be used in a <a |
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199 | href="\boost_url/concept_check/using_concept_check.htm"> |
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200 | BOOST_CONCEPT_ASSERT </a> |
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201 | |
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202 | \code |
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203 | template<class Iterator> |
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204 | void some_function(const Iterator& it) |
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205 | { |
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206 | BOOST_CONCEPT_ASSERT((DataIteratorConcept<Iterator>)); |
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207 | ... |
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208 | } |
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209 | \endcode |
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210 | |
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211 | \since New in yat 0.7 |
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212 | */ |
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213 | template <class T> |
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214 | class DataIteratorConcept |
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215 | { |
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216 | public: |
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217 | /// tag |
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218 | typedef typename weighted_iterator_traits<T>::type tag; |
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219 | /// value_type |
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220 | typedef typename std::iterator_traits<T>::value_type value_type; |
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221 | |
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222 | /** |
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223 | \brief function doing the concept test |
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224 | */ |
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225 | BOOST_CONCEPT_USAGE(DataIteratorConcept) |
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226 | { |
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227 | BOOST_CONCEPT_ASSERT((TrivialIterator<T>)); |
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228 | tag t; |
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229 | constraints(t); |
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230 | } |
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231 | private: |
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232 | void constraints(yat::utility::unweighted_iterator_tag t) const |
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233 | { |
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234 | BOOST_CONCEPT_ASSERT((boost::Convertible<value_type, double>)); |
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235 | } |
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236 | |
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237 | void constraints(yat::utility::weighted_iterator_tag t) const |
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238 | { |
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239 | BOOST_CONCEPT_ASSERT((boost::Convertible<value_type, DataWeight>)); |
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240 | } |
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241 | }; |
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242 | |
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243 | |
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244 | /** |
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245 | \brief Concept check for a \ref concept_distance |
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246 | |
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247 | This class is intended to be used in a <a |
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248 | href="\boost_url/concept_check/using_concept_check.htm"> |
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249 | BOOST_CONCEPT_ASSERT </a> |
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250 | |
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251 | \code |
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252 | template<class Distance> |
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253 | void some_function(double x) |
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254 | { |
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255 | BOOST_CONCEPT_ASSERT((DistanceConcept<Distance>)); |
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256 | ... |
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257 | } |
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258 | \endcode |
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259 | |
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260 | \since New in yat 0.7 |
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261 | */ |
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262 | template <class T> |
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263 | class DistanceConcept : boost::CopyConstructible<T> |
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264 | { |
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265 | public: |
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266 | /** |
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267 | \brief function doing the concept test |
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268 | */ |
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269 | BOOST_CONCEPT_USAGE(DistanceConcept) |
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270 | { |
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271 | boost::random_access_iterator_archetype<double> unweighted; |
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272 | boost::random_access_iterator_archetype<DataWeight> weighted; |
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273 | double d; |
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274 | d = distance_(unweighted, unweighted, unweighted); |
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275 | d = distance_(unweighted, unweighted, weighted); |
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276 | d = distance_(weighted, weighted, unweighted); |
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277 | d = distance_(weighted, weighted, weighted); |
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278 | } |
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279 | private: |
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280 | T distance_; |
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281 | }; |
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282 | |
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283 | }}} // of namespace utility, yat, and theplu |
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284 | #endif |
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