1 | // |
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2 | // Copyright (c) 2000-2002 |
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3 | // Joerg Walter, Mathias Koch |
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4 | // |
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5 | // Permission to use, copy, modify, distribute and sell this software |
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6 | // and its documentation for any purpose is hereby granted without fee, |
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7 | // provided that the above copyright notice appear in all copies and |
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8 | // that both that copyright notice and this permission notice appear |
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9 | // in supporting documentation. The authors make no representations |
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10 | // about the suitability of this software for any purpose. |
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11 | // It is provided "as is" without express or implied warranty. |
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12 | // |
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13 | // The authors gratefully acknowledge the support of |
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14 | // GeNeSys mbH & Co. KG in producing this work. |
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15 | // |
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16 | |
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17 | #ifndef _BOOST_UBLAS_VECTOR_PROXY_ |
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18 | #define _BOOST_UBLAS_VECTOR_PROXY_ |
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19 | |
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20 | #include <boost/numeric/ublas/vector_expression.hpp> |
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21 | #include <boost/numeric/ublas/detail/vector_assign.hpp> |
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22 | #include <boost/numeric/ublas/detail/temporary.hpp> |
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23 | |
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24 | // Iterators based on ideas of Jeremy Siek |
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25 | |
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26 | namespace boost { namespace numeric { namespace ublas { |
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27 | |
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28 | // Vector based range class |
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29 | template<class V> |
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30 | class vector_range: |
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31 | public vector_expression<vector_range<V> > { |
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32 | |
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33 | typedef vector_range<V> self_type; |
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34 | public: |
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35 | #ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS |
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36 | using vector_expression<self_type>::operator (); |
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37 | #endif |
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38 | typedef const V const_vector_type; |
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39 | typedef V vector_type; |
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40 | typedef typename V::size_type size_type; |
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41 | typedef typename V::difference_type difference_type; |
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42 | typedef typename V::value_type value_type; |
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43 | typedef typename V::const_reference const_reference; |
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44 | typedef typename boost::mpl::if_<boost::is_const<V>, |
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45 | typename V::const_reference, |
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46 | typename V::reference>::type reference; |
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47 | typedef typename boost::mpl::if_<boost::is_const<V>, |
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48 | typename V::const_closure_type, |
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49 | typename V::closure_type>::type vector_closure_type; |
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50 | typedef basic_range<size_type, difference_type> range_type; |
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51 | typedef const self_type const_closure_type; |
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52 | typedef self_type closure_type; |
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53 | typedef typename storage_restrict_traits<typename V::storage_category, |
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54 | dense_proxy_tag>::storage_category storage_category; |
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55 | |
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56 | // Construction and destruction |
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57 | BOOST_UBLAS_INLINE |
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58 | vector_range (vector_type &data, const range_type &r): |
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59 | data_ (data), r_ (r.preprocess (data.size ())) { |
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60 | // Early checking of preconditions here. |
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61 | // BOOST_UBLAS_CHECK (r_.start () <= data_.size () && |
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62 | // r_.start () + r_.size () <= data_.size (), bad_index ()); |
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63 | } |
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64 | BOOST_UBLAS_INLINE |
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65 | vector_range (const vector_closure_type &data, const range_type &r, bool): |
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66 | data_ (data), r_ (r.preprocess (data.size ())) { |
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67 | // Early checking of preconditions here. |
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68 | // BOOST_UBLAS_CHECK (r_.start () <= data_.size () && |
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69 | // r_.start () + r_.size () <= data_.size (), bad_index ()); |
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70 | } |
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71 | |
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72 | // Accessors |
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73 | BOOST_UBLAS_INLINE |
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74 | size_type start () const { |
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75 | return r_.start (); |
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76 | } |
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77 | BOOST_UBLAS_INLINE |
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78 | size_type size () const { |
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79 | return r_.size (); |
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80 | } |
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81 | |
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82 | // Storage accessors |
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83 | BOOST_UBLAS_INLINE |
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84 | const vector_closure_type &data () const { |
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85 | return data_; |
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86 | } |
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87 | BOOST_UBLAS_INLINE |
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88 | vector_closure_type &data () { |
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89 | return data_; |
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90 | } |
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91 | |
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92 | // Element access |
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93 | #ifndef BOOST_UBLAS_PROXY_CONST_MEMBER |
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94 | BOOST_UBLAS_INLINE |
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95 | const_reference operator () (size_type i) const { |
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96 | return data_ (r_ (i)); |
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97 | } |
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98 | BOOST_UBLAS_INLINE |
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99 | reference operator () (size_type i) { |
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100 | return data_ (r_ (i)); |
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101 | } |
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102 | |
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103 | BOOST_UBLAS_INLINE |
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104 | const_reference operator [] (size_type i) const { |
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105 | return (*this) (i); |
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106 | } |
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107 | BOOST_UBLAS_INLINE |
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108 | reference operator [] (size_type i) { |
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109 | return (*this) (i); |
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110 | } |
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111 | #else |
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112 | BOOST_UBLAS_INLINE |
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113 | reference operator () (size_type i) const { |
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114 | return data_ (r_ (i)); |
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115 | } |
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116 | |
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117 | BOOST_UBLAS_INLINE |
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118 | reference operator [] (size_type i) const { |
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119 | return (*this) (i); |
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120 | } |
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121 | #endif |
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122 | |
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123 | // ISSUE can this be done in free project function? |
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124 | // Although a const function can create a non-const proxy to a non-const object |
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125 | // Critical is that vector_type and data_ (vector_closure_type) are const correct |
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126 | BOOST_UBLAS_INLINE |
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127 | vector_range<vector_type> project (const range_type &r) const { |
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128 | return vector_range<vector_type> (data_, r_.compose (r.preprocess (data_.size ())), false); |
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129 | } |
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130 | |
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131 | // Assignment |
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132 | BOOST_UBLAS_INLINE |
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133 | vector_range &operator = (const vector_range &vr) { |
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134 | // ISSUE need a temporary, proxy can be overlaping alias |
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135 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (vr)); |
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136 | return *this; |
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137 | } |
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138 | BOOST_UBLAS_INLINE |
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139 | vector_range &assign_temporary (vector_range &vr) { |
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140 | // assign elements, proxied container remains the same |
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141 | vector_assign<scalar_assign> (*this, vr); |
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142 | return *this; |
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143 | } |
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144 | template<class AE> |
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145 | BOOST_UBLAS_INLINE |
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146 | vector_range &operator = (const vector_expression<AE> &ae) { |
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147 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (ae)); |
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148 | return *this; |
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149 | } |
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150 | template<class AE> |
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151 | BOOST_UBLAS_INLINE |
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152 | vector_range &assign (const vector_expression<AE> &ae) { |
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153 | vector_assign<scalar_assign> (*this, ae); |
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154 | return *this; |
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155 | } |
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156 | template<class AE> |
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157 | BOOST_UBLAS_INLINE |
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158 | vector_range &operator += (const vector_expression<AE> &ae) { |
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159 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this + ae)); |
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160 | return *this; |
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161 | } |
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162 | template<class AE> |
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163 | BOOST_UBLAS_INLINE |
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164 | vector_range &plus_assign (const vector_expression<AE> &ae) { |
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165 | vector_assign<scalar_plus_assign> (*this, ae); |
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166 | return *this; |
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167 | } |
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168 | template<class AE> |
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169 | BOOST_UBLAS_INLINE |
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170 | vector_range &operator -= (const vector_expression<AE> &ae) { |
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171 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this - ae)); |
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172 | return *this; |
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173 | } |
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174 | template<class AE> |
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175 | BOOST_UBLAS_INLINE |
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176 | vector_range &minus_assign (const vector_expression<AE> &ae) { |
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177 | vector_assign<scalar_minus_assign> (*this, ae); |
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178 | return *this; |
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179 | } |
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180 | template<class AT> |
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181 | BOOST_UBLAS_INLINE |
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182 | vector_range &operator *= (const AT &at) { |
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183 | vector_assign_scalar<scalar_multiplies_assign> (*this, at); |
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184 | return *this; |
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185 | } |
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186 | template<class AT> |
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187 | BOOST_UBLAS_INLINE |
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188 | vector_range &operator /= (const AT &at) { |
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189 | vector_assign_scalar<scalar_divides_assign> (*this, at); |
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190 | return *this; |
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191 | } |
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192 | |
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193 | // Closure comparison |
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194 | BOOST_UBLAS_INLINE |
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195 | bool same_closure (const vector_range &vr) const { |
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196 | return (*this).data_.same_closure (vr.data_); |
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197 | } |
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198 | |
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199 | // Comparison |
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200 | BOOST_UBLAS_INLINE |
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201 | bool operator == (const vector_range &vr) const { |
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202 | return (*this).data_ == vr.data_ && r_ == vr.r_; |
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203 | } |
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204 | |
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205 | // Swapping |
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206 | BOOST_UBLAS_INLINE |
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207 | void swap (vector_range vr) { |
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208 | if (this != &vr) { |
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209 | BOOST_UBLAS_CHECK (size () == vr.size (), bad_size ()); |
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210 | // Sparse ranges may be nonconformant now. |
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211 | // std::swap_ranges (begin (), end (), vr.begin ()); |
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212 | vector_swap<scalar_swap> (*this, vr); |
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213 | } |
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214 | } |
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215 | BOOST_UBLAS_INLINE |
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216 | friend void swap (vector_range vr1, vector_range vr2) { |
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217 | vr1.swap (vr2); |
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218 | } |
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219 | |
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220 | // Iterator types |
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221 | private: |
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222 | typedef typename V::const_iterator const_subiterator_type; |
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223 | typedef typename boost::mpl::if_<boost::is_const<V>, |
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224 | typename V::const_iterator, |
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225 | typename V::iterator>::type subiterator_type; |
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226 | |
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227 | public: |
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228 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
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229 | typedef indexed_iterator<vector_range<vector_type>, |
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230 | typename subiterator_type::iterator_category> iterator; |
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231 | typedef indexed_const_iterator<vector_range<vector_type>, |
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232 | typename const_subiterator_type::iterator_category> const_iterator; |
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233 | #else |
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234 | class const_iterator; |
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235 | class iterator; |
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236 | #endif |
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237 | |
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238 | // Element lookup |
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239 | BOOST_UBLAS_INLINE |
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240 | const_iterator find (size_type i) const { |
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241 | const_subiterator_type it (data_.find (start () + i)); |
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242 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
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243 | return const_iterator (*this, it.index ()); |
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244 | #else |
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245 | return const_iterator (*this, it); |
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246 | #endif |
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247 | } |
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248 | BOOST_UBLAS_INLINE |
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249 | iterator find (size_type i) { |
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250 | subiterator_type it (data_.find (start () + i)); |
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251 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
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252 | return iterator (*this, it.index ()); |
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253 | #else |
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254 | return iterator (*this, it); |
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255 | #endif |
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256 | } |
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257 | |
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258 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
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259 | class const_iterator: |
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260 | public container_const_reference<vector_range>, |
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261 | public iterator_base_traits<typename const_subiterator_type::iterator_category>::template |
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262 | iterator_base<const_iterator, value_type>::type { |
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263 | public: |
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264 | typedef typename const_subiterator_type::difference_type difference_type; |
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265 | typedef typename const_subiterator_type::value_type value_type; |
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266 | typedef typename const_subiterator_type::reference reference; |
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267 | typedef typename const_subiterator_type::pointer pointer; |
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268 | |
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269 | // Construction and destruction |
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270 | BOOST_UBLAS_INLINE |
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271 | const_iterator (): |
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272 | container_const_reference<self_type> (), it_ () {} |
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273 | BOOST_UBLAS_INLINE |
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274 | const_iterator (const self_type &vr, const const_subiterator_type &it): |
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275 | container_const_reference<self_type> (vr), it_ (it) {} |
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276 | BOOST_UBLAS_INLINE |
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277 | const_iterator (const iterator &it): |
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278 | container_const_reference<self_type> (it ()), it_ (it.it_) {} |
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279 | |
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280 | // Arithmetic |
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281 | BOOST_UBLAS_INLINE |
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282 | const_iterator &operator ++ () { |
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283 | ++ it_; |
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284 | return *this; |
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285 | } |
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286 | BOOST_UBLAS_INLINE |
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287 | const_iterator &operator -- () { |
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288 | -- it_; |
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289 | return *this; |
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290 | } |
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291 | BOOST_UBLAS_INLINE |
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292 | const_iterator &operator += (difference_type n) { |
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293 | it_ += n; |
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294 | return *this; |
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295 | } |
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296 | BOOST_UBLAS_INLINE |
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297 | const_iterator &operator -= (difference_type n) { |
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298 | it_ -= n; |
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299 | return *this; |
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300 | } |
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301 | BOOST_UBLAS_INLINE |
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302 | difference_type operator - (const const_iterator &it) const { |
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303 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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304 | return it_ - it.it_; |
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305 | } |
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306 | |
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307 | // Dereference |
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308 | BOOST_UBLAS_INLINE |
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309 | const_reference operator * () const { |
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310 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
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311 | return *it_; |
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312 | } |
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313 | |
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314 | // Index |
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315 | BOOST_UBLAS_INLINE |
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316 | size_type index () const { |
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317 | return it_.index () - (*this) ().start (); |
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318 | } |
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319 | |
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320 | // Assignment |
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321 | BOOST_UBLAS_INLINE |
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322 | const_iterator &operator = (const const_iterator &it) { |
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323 | container_const_reference<self_type>::assign (&it ()); |
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324 | it_ = it.it_; |
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325 | return *this; |
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326 | } |
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327 | |
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328 | // Comparison |
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329 | BOOST_UBLAS_INLINE |
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330 | bool operator == (const const_iterator &it) const { |
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331 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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332 | return it_ == it.it_; |
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333 | } |
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334 | BOOST_UBLAS_INLINE |
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335 | bool operator < (const const_iterator &it) const { |
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336 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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337 | return it_ < it.it_; |
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338 | } |
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339 | |
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340 | private: |
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341 | const_subiterator_type it_; |
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342 | }; |
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343 | #endif |
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344 | |
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345 | BOOST_UBLAS_INLINE |
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346 | const_iterator begin () const { |
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347 | return find (0); |
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348 | } |
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349 | BOOST_UBLAS_INLINE |
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350 | const_iterator end () const { |
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351 | return find (size ()); |
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352 | } |
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353 | |
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354 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
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355 | class iterator: |
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356 | public container_reference<vector_range>, |
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357 | public iterator_base_traits<typename subiterator_type::iterator_category>::template |
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358 | iterator_base<iterator, value_type>::type { |
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359 | public: |
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360 | typedef typename subiterator_type::difference_type difference_type; |
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361 | typedef typename subiterator_type::value_type value_type; |
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362 | typedef typename subiterator_type::reference reference; |
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363 | typedef typename subiterator_type::pointer pointer; |
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364 | |
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365 | // Construction and destruction |
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366 | BOOST_UBLAS_INLINE |
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367 | iterator (): |
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368 | container_reference<self_type> (), it_ () {} |
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369 | BOOST_UBLAS_INLINE |
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370 | iterator (self_type &vr, const subiterator_type &it): |
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371 | container_reference<self_type> (vr), it_ (it) {} |
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372 | |
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373 | // Arithmetic |
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374 | BOOST_UBLAS_INLINE |
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375 | iterator &operator ++ () { |
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376 | ++ it_; |
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377 | return *this; |
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378 | } |
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379 | BOOST_UBLAS_INLINE |
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380 | iterator &operator -- () { |
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381 | -- it_; |
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382 | return *this; |
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383 | } |
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384 | BOOST_UBLAS_INLINE |
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385 | iterator &operator += (difference_type n) { |
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386 | it_ += n; |
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387 | return *this; |
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388 | } |
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389 | BOOST_UBLAS_INLINE |
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390 | iterator &operator -= (difference_type n) { |
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391 | it_ -= n; |
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392 | return *this; |
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393 | } |
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394 | BOOST_UBLAS_INLINE |
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395 | difference_type operator - (const iterator &it) const { |
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396 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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397 | return it_ - it.it_; |
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398 | } |
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399 | |
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400 | // Dereference |
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401 | BOOST_UBLAS_INLINE |
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402 | reference operator * () const { |
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403 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
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404 | return *it_; |
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405 | } |
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406 | |
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407 | // Index |
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408 | BOOST_UBLAS_INLINE |
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409 | size_type index () const { |
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410 | return it_.index () - (*this) ().start (); |
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411 | } |
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412 | |
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413 | // Assignment |
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414 | BOOST_UBLAS_INLINE |
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415 | iterator &operator = (const iterator &it) { |
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416 | container_reference<self_type>::assign (&it ()); |
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417 | it_ = it.it_; |
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418 | return *this; |
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419 | } |
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420 | |
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421 | // Comparison |
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422 | BOOST_UBLAS_INLINE |
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423 | bool operator == (const iterator &it) const { |
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424 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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425 | return it_ == it.it_; |
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426 | } |
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427 | BOOST_UBLAS_INLINE |
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428 | bool operator < (const iterator &it) const { |
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429 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
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430 | return it_ < it.it_; |
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431 | } |
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432 | |
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433 | private: |
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434 | subiterator_type it_; |
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435 | |
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436 | friend class const_iterator; |
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437 | }; |
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438 | #endif |
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439 | |
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440 | BOOST_UBLAS_INLINE |
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441 | iterator begin () { |
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442 | return find (0); |
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443 | } |
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444 | BOOST_UBLAS_INLINE |
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445 | iterator end () { |
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446 | return find (size ()); |
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447 | } |
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448 | |
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449 | // Reverse iterator |
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450 | typedef reverse_iterator_base<const_iterator> const_reverse_iterator; |
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451 | typedef reverse_iterator_base<iterator> reverse_iterator; |
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452 | |
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453 | BOOST_UBLAS_INLINE |
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454 | const_reverse_iterator rbegin () const { |
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455 | return const_reverse_iterator (end ()); |
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456 | } |
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457 | BOOST_UBLAS_INLINE |
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458 | const_reverse_iterator rend () const { |
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459 | return const_reverse_iterator (begin ()); |
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460 | } |
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461 | BOOST_UBLAS_INLINE |
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462 | reverse_iterator rbegin () { |
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463 | return reverse_iterator (end ()); |
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464 | } |
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465 | BOOST_UBLAS_INLINE |
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466 | reverse_iterator rend () { |
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467 | return reverse_iterator (begin ()); |
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468 | } |
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469 | |
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470 | private: |
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471 | vector_closure_type data_; |
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472 | range_type r_; |
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473 | }; |
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474 | |
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475 | // Simple Projections |
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476 | template<class V> |
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477 | BOOST_UBLAS_INLINE |
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478 | vector_range<V> subrange (V &data, typename V::size_type start, typename V::size_type stop) { |
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479 | typedef basic_range<typename V::size_type, typename V::difference_type> range_type; |
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480 | return vector_range<V> (data, range_type (start, stop)); |
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481 | } |
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482 | template<class V> |
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483 | BOOST_UBLAS_INLINE |
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484 | vector_range<const V> subrange (const V &data, typename V::size_type start, typename V::size_type stop) { |
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485 | typedef basic_range<typename V::size_type, typename V::difference_type> range_type; |
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486 | return vector_range<const V> (data, range_type (start, stop)); |
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487 | } |
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488 | |
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489 | // Generic Projections |
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490 | template<class V> |
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491 | BOOST_UBLAS_INLINE |
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492 | vector_range<V> project (V &data, typename vector_range<V>::range_type const &r) { |
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493 | return vector_range<V> (data, r); |
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494 | } |
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495 | template<class V> |
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496 | BOOST_UBLAS_INLINE |
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497 | const vector_range<const V> project (const V &data, typename vector_range<V>::range_type const &r) { |
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498 | // ISSUE was: return vector_range<V> (const_cast<V &> (data), r); |
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499 | return vector_range<const V> (data, r); |
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500 | } |
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501 | template<class V> |
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502 | BOOST_UBLAS_INLINE |
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503 | vector_range<V> project (vector_range<V> &data, const typename vector_range<V>::range_type &r) { |
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504 | return data.project (r); |
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505 | } |
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506 | template<class V> |
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507 | BOOST_UBLAS_INLINE |
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508 | const vector_range<V> project (const vector_range<V> &data, const typename vector_range<V>::range_type &r) { |
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509 | return data.project (r); |
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510 | } |
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511 | |
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512 | // Specialization of temporary_traits |
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513 | template <class V> |
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514 | struct vector_temporary_traits< vector_range<V> > |
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515 | : vector_temporary_traits< V > {} ; |
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516 | |
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517 | |
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518 | // Vector based slice class |
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519 | template<class V> |
---|
520 | class vector_slice: |
---|
521 | public vector_expression<vector_slice<V> > { |
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522 | |
---|
523 | typedef vector_slice<V> self_type; |
---|
524 | public: |
---|
525 | #ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS |
---|
526 | using vector_expression<self_type>::operator (); |
---|
527 | #endif |
---|
528 | typedef const V const_vector_type; |
---|
529 | typedef V vector_type; |
---|
530 | typedef typename V::size_type size_type; |
---|
531 | typedef typename V::difference_type difference_type; |
---|
532 | typedef typename V::value_type value_type; |
---|
533 | typedef typename V::const_reference const_reference; |
---|
534 | typedef typename boost::mpl::if_<boost::is_const<V>, |
---|
535 | typename V::const_reference, |
---|
536 | typename V::reference>::type reference; |
---|
537 | typedef typename boost::mpl::if_<boost::is_const<V>, |
---|
538 | typename V::const_closure_type, |
---|
539 | typename V::closure_type>::type vector_closure_type; |
---|
540 | typedef basic_range<size_type, difference_type> range_type; |
---|
541 | typedef basic_slice<size_type, difference_type> slice_type; |
---|
542 | typedef const self_type const_closure_type; |
---|
543 | typedef self_type closure_type; |
---|
544 | typedef typename storage_restrict_traits<typename V::storage_category, |
---|
545 | dense_proxy_tag>::storage_category storage_category; |
---|
546 | |
---|
547 | // Construction and destruction |
---|
548 | BOOST_UBLAS_INLINE |
---|
549 | vector_slice (vector_type &data, const slice_type &s): |
---|
550 | data_ (data), s_ (s.preprocess (data.size ())) { |
---|
551 | // Early checking of preconditions here. |
---|
552 | // BOOST_UBLAS_CHECK (s_.start () <= data_.size () && |
---|
553 | // s_.start () + s_.stride () * (s_.size () - (s_.size () > 0)) <= data_.size (), bad_index ()); |
---|
554 | } |
---|
555 | BOOST_UBLAS_INLINE |
---|
556 | vector_slice (const vector_closure_type &data, const slice_type &s, int): |
---|
557 | data_ (data), s_ (s.preprocess (data.size ())) { |
---|
558 | // Early checking of preconditions here. |
---|
559 | // BOOST_UBLAS_CHECK (s_.start () <= data_.size () && |
---|
560 | // s_.start () + s_.stride () * (s_.size () - (s_.size () > 0)) <= data_.size (), bad_index ()); |
---|
561 | } |
---|
562 | |
---|
563 | // Accessors |
---|
564 | BOOST_UBLAS_INLINE |
---|
565 | size_type start () const { |
---|
566 | return s_.start (); |
---|
567 | } |
---|
568 | BOOST_UBLAS_INLINE |
---|
569 | difference_type stride () const { |
---|
570 | return s_.stride (); |
---|
571 | } |
---|
572 | BOOST_UBLAS_INLINE |
---|
573 | size_type size () const { |
---|
574 | return s_.size (); |
---|
575 | } |
---|
576 | |
---|
577 | // Storage accessors |
---|
578 | BOOST_UBLAS_INLINE |
---|
579 | const vector_closure_type &data () const { |
---|
580 | return data_; |
---|
581 | } |
---|
582 | BOOST_UBLAS_INLINE |
---|
583 | vector_closure_type &data () { |
---|
584 | return data_; |
---|
585 | } |
---|
586 | |
---|
587 | // Element access |
---|
588 | #ifndef BOOST_UBLAS_PROXY_CONST_MEMBER |
---|
589 | BOOST_UBLAS_INLINE |
---|
590 | const_reference operator () (size_type i) const { |
---|
591 | return data_ (s_ (i)); |
---|
592 | } |
---|
593 | BOOST_UBLAS_INLINE |
---|
594 | reference operator () (size_type i) { |
---|
595 | return data_ (s_ (i)); |
---|
596 | } |
---|
597 | |
---|
598 | BOOST_UBLAS_INLINE |
---|
599 | const_reference operator [] (size_type i) const { |
---|
600 | return (*this) (i); |
---|
601 | } |
---|
602 | BOOST_UBLAS_INLINE |
---|
603 | reference operator [] (size_type i) { |
---|
604 | return (*this) (i); |
---|
605 | } |
---|
606 | #else |
---|
607 | BOOST_UBLAS_INLINE |
---|
608 | reference operator () (size_type i) const { |
---|
609 | return data_ (s_ (i)); |
---|
610 | } |
---|
611 | |
---|
612 | BOOST_UBLAS_INLINE |
---|
613 | reference operator [] (size_type i) const { |
---|
614 | return (*this) (i); |
---|
615 | } |
---|
616 | #endif |
---|
617 | |
---|
618 | // ISSUE can this be done in free project function? |
---|
619 | // Although a const function can create a non-const proxy to a non-const object |
---|
620 | // Critical is that vector_type and data_ (vector_closure_type) are const correct |
---|
621 | BOOST_UBLAS_INLINE |
---|
622 | vector_slice<vector_type> project (const range_type &r) const { |
---|
623 | return vector_slice<vector_type> (data_, s_.compose (r.preprocess (data_.size ())), false); |
---|
624 | } |
---|
625 | BOOST_UBLAS_INLINE |
---|
626 | vector_slice<vector_type> project (const slice_type &s) const { |
---|
627 | return vector_slice<vector_type> (data_, s_.compose (s.preprocess (data_.size ())), false); |
---|
628 | } |
---|
629 | |
---|
630 | // Assignment |
---|
631 | BOOST_UBLAS_INLINE |
---|
632 | vector_slice &operator = (const vector_slice &vs) { |
---|
633 | // ISSUE need a temporary, proxy can be overlaping alias |
---|
634 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (vs)); |
---|
635 | return *this; |
---|
636 | } |
---|
637 | BOOST_UBLAS_INLINE |
---|
638 | vector_slice &assign_temporary (vector_slice &vs) { |
---|
639 | // assign elements, proxied container remains the same |
---|
640 | vector_assign<scalar_assign> (*this, vs); |
---|
641 | return *this; |
---|
642 | } |
---|
643 | template<class AE> |
---|
644 | BOOST_UBLAS_INLINE |
---|
645 | vector_slice &operator = (const vector_expression<AE> &ae) { |
---|
646 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (ae)); |
---|
647 | return *this; |
---|
648 | } |
---|
649 | template<class AE> |
---|
650 | BOOST_UBLAS_INLINE |
---|
651 | vector_slice &assign (const vector_expression<AE> &ae) { |
---|
652 | vector_assign<scalar_assign> (*this, ae); |
---|
653 | return *this; |
---|
654 | } |
---|
655 | template<class AE> |
---|
656 | BOOST_UBLAS_INLINE |
---|
657 | vector_slice &operator += (const vector_expression<AE> &ae) { |
---|
658 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this + ae)); |
---|
659 | return *this; |
---|
660 | } |
---|
661 | template<class AE> |
---|
662 | BOOST_UBLAS_INLINE |
---|
663 | vector_slice &plus_assign (const vector_expression<AE> &ae) { |
---|
664 | vector_assign<scalar_plus_assign> (*this, ae); |
---|
665 | return *this; |
---|
666 | } |
---|
667 | template<class AE> |
---|
668 | BOOST_UBLAS_INLINE |
---|
669 | vector_slice &operator -= (const vector_expression<AE> &ae) { |
---|
670 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this - ae)); |
---|
671 | return *this; |
---|
672 | } |
---|
673 | template<class AE> |
---|
674 | BOOST_UBLAS_INLINE |
---|
675 | vector_slice &minus_assign (const vector_expression<AE> &ae) { |
---|
676 | vector_assign<scalar_minus_assign> (*this, ae); |
---|
677 | return *this; |
---|
678 | } |
---|
679 | template<class AT> |
---|
680 | BOOST_UBLAS_INLINE |
---|
681 | vector_slice &operator *= (const AT &at) { |
---|
682 | vector_assign_scalar<scalar_multiplies_assign> (*this, at); |
---|
683 | return *this; |
---|
684 | } |
---|
685 | template<class AT> |
---|
686 | BOOST_UBLAS_INLINE |
---|
687 | vector_slice &operator /= (const AT &at) { |
---|
688 | vector_assign_scalar<scalar_divides_assign> (*this, at); |
---|
689 | return *this; |
---|
690 | } |
---|
691 | |
---|
692 | // Closure comparison |
---|
693 | BOOST_UBLAS_INLINE |
---|
694 | bool same_closure (const vector_slice &vr) const { |
---|
695 | return (*this).data_.same_closure (vr.data_); |
---|
696 | } |
---|
697 | |
---|
698 | // Comparison |
---|
699 | BOOST_UBLAS_INLINE |
---|
700 | bool operator == (const vector_slice &vs) const { |
---|
701 | return (*this).data_ == vs.data_ && s_ == vs.s_; |
---|
702 | } |
---|
703 | |
---|
704 | // Swapping |
---|
705 | BOOST_UBLAS_INLINE |
---|
706 | void swap (vector_slice vs) { |
---|
707 | if (this != &vs) { |
---|
708 | BOOST_UBLAS_CHECK (size () == vs.size (), bad_size ()); |
---|
709 | // Sparse ranges may be nonconformant now. |
---|
710 | // std::swap_ranges (begin (), end (), vs.begin ()); |
---|
711 | vector_swap<scalar_swap> (*this, vs); |
---|
712 | } |
---|
713 | } |
---|
714 | BOOST_UBLAS_INLINE |
---|
715 | friend void swap (vector_slice vs1, vector_slice vs2) { |
---|
716 | vs1.swap (vs2); |
---|
717 | } |
---|
718 | |
---|
719 | // Iterator types |
---|
720 | private: |
---|
721 | // Use slice as an index - FIXME this fails for packed assignment |
---|
722 | typedef typename slice_type::const_iterator const_subiterator_type; |
---|
723 | typedef typename slice_type::const_iterator subiterator_type; |
---|
724 | |
---|
725 | public: |
---|
726 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
727 | typedef indexed_iterator<vector_slice<vector_type>, |
---|
728 | typename vector_type::iterator::iterator_category> iterator; |
---|
729 | typedef indexed_const_iterator<vector_slice<vector_type>, |
---|
730 | typename vector_type::const_iterator::iterator_category> const_iterator; |
---|
731 | #else |
---|
732 | class const_iterator; |
---|
733 | class iterator; |
---|
734 | #endif |
---|
735 | |
---|
736 | // Element lookup |
---|
737 | BOOST_UBLAS_INLINE |
---|
738 | const_iterator find (size_type i) const { |
---|
739 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
740 | return const_iterator (*this, i); |
---|
741 | #else |
---|
742 | return const_iterator (*this, s_.begin () + i); |
---|
743 | #endif |
---|
744 | } |
---|
745 | BOOST_UBLAS_INLINE |
---|
746 | iterator find (size_type i) { |
---|
747 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
748 | return iterator (*this, i); |
---|
749 | #else |
---|
750 | return iterator (*this, s_.begin () + i); |
---|
751 | #endif |
---|
752 | } |
---|
753 | |
---|
754 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
755 | class const_iterator: |
---|
756 | public container_const_reference<vector_slice>, |
---|
757 | public iterator_base_traits<typename V::const_iterator::iterator_category>::template |
---|
758 | iterator_base<const_iterator, value_type>::type { |
---|
759 | public: |
---|
760 | typedef typename V::const_iterator::difference_type difference_type; |
---|
761 | typedef typename V::const_iterator::value_type value_type; |
---|
762 | typedef typename V::const_reference reference; //FIXME due to indexing access |
---|
763 | typedef typename V::const_iterator::pointer pointer; |
---|
764 | |
---|
765 | // Construction and destruction |
---|
766 | BOOST_UBLAS_INLINE |
---|
767 | const_iterator (): |
---|
768 | container_const_reference<self_type> (), it_ () {} |
---|
769 | BOOST_UBLAS_INLINE |
---|
770 | const_iterator (const self_type &vs, const const_subiterator_type &it): |
---|
771 | container_const_reference<self_type> (vs), it_ (it) {} |
---|
772 | BOOST_UBLAS_INLINE |
---|
773 | const_iterator (const iterator &it): |
---|
774 | container_const_reference<self_type> (it ()), it_ (it.it_) {} |
---|
775 | |
---|
776 | // Arithmetic |
---|
777 | BOOST_UBLAS_INLINE |
---|
778 | const_iterator &operator ++ () { |
---|
779 | ++ it_; |
---|
780 | return *this; |
---|
781 | } |
---|
782 | BOOST_UBLAS_INLINE |
---|
783 | const_iterator &operator -- () { |
---|
784 | -- it_; |
---|
785 | return *this; |
---|
786 | } |
---|
787 | BOOST_UBLAS_INLINE |
---|
788 | const_iterator &operator += (difference_type n) { |
---|
789 | it_ += n; |
---|
790 | return *this; |
---|
791 | } |
---|
792 | BOOST_UBLAS_INLINE |
---|
793 | const_iterator &operator -= (difference_type n) { |
---|
794 | it_ -= n; |
---|
795 | return *this; |
---|
796 | } |
---|
797 | BOOST_UBLAS_INLINE |
---|
798 | difference_type operator - (const const_iterator &it) const { |
---|
799 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
800 | return it_ - it.it_; |
---|
801 | } |
---|
802 | |
---|
803 | // Dereference |
---|
804 | BOOST_UBLAS_INLINE |
---|
805 | const_reference operator * () const { |
---|
806 | // FIXME replace find with at_element |
---|
807 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
---|
808 | return (*this) ().data_ (*it_); |
---|
809 | } |
---|
810 | |
---|
811 | // Index |
---|
812 | BOOST_UBLAS_INLINE |
---|
813 | size_type index () const { |
---|
814 | return it_.index (); |
---|
815 | } |
---|
816 | |
---|
817 | // Assignment |
---|
818 | BOOST_UBLAS_INLINE |
---|
819 | const_iterator &operator = (const const_iterator &it) { |
---|
820 | container_const_reference<self_type>::assign (&it ()); |
---|
821 | it_ = it.it_; |
---|
822 | return *this; |
---|
823 | } |
---|
824 | |
---|
825 | // Comparison |
---|
826 | BOOST_UBLAS_INLINE |
---|
827 | bool operator == (const const_iterator &it) const { |
---|
828 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
829 | return it_ == it.it_; |
---|
830 | } |
---|
831 | BOOST_UBLAS_INLINE |
---|
832 | bool operator < (const const_iterator &it) const { |
---|
833 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
834 | return it_ < it.it_; |
---|
835 | } |
---|
836 | |
---|
837 | private: |
---|
838 | const_subiterator_type it_; |
---|
839 | }; |
---|
840 | #endif |
---|
841 | |
---|
842 | BOOST_UBLAS_INLINE |
---|
843 | const_iterator begin () const { |
---|
844 | return find (0); |
---|
845 | } |
---|
846 | BOOST_UBLAS_INLINE |
---|
847 | const_iterator end () const { |
---|
848 | return find (size ()); |
---|
849 | } |
---|
850 | |
---|
851 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
852 | class iterator: |
---|
853 | public container_reference<vector_slice>, |
---|
854 | public iterator_base_traits<typename V::iterator::iterator_category>::template |
---|
855 | iterator_base<iterator, value_type>::type { |
---|
856 | public: |
---|
857 | typedef typename V::iterator::difference_type difference_type; |
---|
858 | typedef typename V::iterator::value_type value_type; |
---|
859 | typedef typename V::reference reference; //FIXME due to indexing access |
---|
860 | typedef typename V::iterator::pointer pointer; |
---|
861 | |
---|
862 | // Construction and destruction |
---|
863 | BOOST_UBLAS_INLINE |
---|
864 | iterator (): |
---|
865 | container_reference<self_type> (), it_ () {} |
---|
866 | BOOST_UBLAS_INLINE |
---|
867 | iterator (self_type &vs, const subiterator_type &it): |
---|
868 | container_reference<self_type> (vs), it_ (it) {} |
---|
869 | |
---|
870 | // Arithmetic |
---|
871 | BOOST_UBLAS_INLINE |
---|
872 | iterator &operator ++ () { |
---|
873 | ++ it_; |
---|
874 | return *this; |
---|
875 | } |
---|
876 | BOOST_UBLAS_INLINE |
---|
877 | iterator &operator -- () { |
---|
878 | -- it_; |
---|
879 | return *this; |
---|
880 | } |
---|
881 | BOOST_UBLAS_INLINE |
---|
882 | iterator &operator += (difference_type n) { |
---|
883 | it_ += n; |
---|
884 | return *this; |
---|
885 | } |
---|
886 | BOOST_UBLAS_INLINE |
---|
887 | iterator &operator -= (difference_type n) { |
---|
888 | it_ -= n; |
---|
889 | return *this; |
---|
890 | } |
---|
891 | BOOST_UBLAS_INLINE |
---|
892 | difference_type operator - (const iterator &it) const { |
---|
893 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
894 | return it_ - it.it_; |
---|
895 | } |
---|
896 | |
---|
897 | // Dereference |
---|
898 | BOOST_UBLAS_INLINE |
---|
899 | reference operator * () const { |
---|
900 | // FIXME replace find with at_element |
---|
901 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
---|
902 | return (*this) ().data_ (*it_); |
---|
903 | } |
---|
904 | |
---|
905 | // Index |
---|
906 | BOOST_UBLAS_INLINE |
---|
907 | size_type index () const { |
---|
908 | return it_.index (); |
---|
909 | } |
---|
910 | |
---|
911 | // Assignment |
---|
912 | BOOST_UBLAS_INLINE |
---|
913 | iterator &operator = (const iterator &it) { |
---|
914 | container_reference<self_type>::assign (&it ()); |
---|
915 | it_ = it.it_; |
---|
916 | return *this; |
---|
917 | } |
---|
918 | |
---|
919 | // Comparison |
---|
920 | BOOST_UBLAS_INLINE |
---|
921 | bool operator == (const iterator &it) const { |
---|
922 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
923 | return it_ == it.it_; |
---|
924 | } |
---|
925 | BOOST_UBLAS_INLINE |
---|
926 | bool operator < (const iterator &it) const { |
---|
927 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
928 | return it_ < it.it_; |
---|
929 | } |
---|
930 | |
---|
931 | private: |
---|
932 | subiterator_type it_; |
---|
933 | |
---|
934 | friend class const_iterator; |
---|
935 | }; |
---|
936 | #endif |
---|
937 | |
---|
938 | BOOST_UBLAS_INLINE |
---|
939 | iterator begin () { |
---|
940 | return find (0); |
---|
941 | } |
---|
942 | BOOST_UBLAS_INLINE |
---|
943 | iterator end () { |
---|
944 | return find (size ()); |
---|
945 | } |
---|
946 | |
---|
947 | // Reverse iterator |
---|
948 | typedef reverse_iterator_base<const_iterator> const_reverse_iterator; |
---|
949 | typedef reverse_iterator_base<iterator> reverse_iterator; |
---|
950 | |
---|
951 | BOOST_UBLAS_INLINE |
---|
952 | const_reverse_iterator rbegin () const { |
---|
953 | return const_reverse_iterator (end ()); |
---|
954 | } |
---|
955 | BOOST_UBLAS_INLINE |
---|
956 | const_reverse_iterator rend () const { |
---|
957 | return const_reverse_iterator (begin ()); |
---|
958 | } |
---|
959 | BOOST_UBLAS_INLINE |
---|
960 | reverse_iterator rbegin () { |
---|
961 | return reverse_iterator (end ()); |
---|
962 | } |
---|
963 | BOOST_UBLAS_INLINE |
---|
964 | reverse_iterator rend () { |
---|
965 | return reverse_iterator (begin ()); |
---|
966 | } |
---|
967 | |
---|
968 | private: |
---|
969 | vector_closure_type data_; |
---|
970 | slice_type s_; |
---|
971 | }; |
---|
972 | |
---|
973 | // Simple Projections |
---|
974 | template<class V> |
---|
975 | BOOST_UBLAS_INLINE |
---|
976 | vector_slice<V> subslice (V &data, typename V::size_type start, typename V::difference_type stride, typename V::size_type size) { |
---|
977 | typedef basic_slice<typename V::size_type, typename V::difference_type> slice_type; |
---|
978 | return vector_slice<V> (data, slice_type (start, stride, size)); |
---|
979 | } |
---|
980 | template<class V> |
---|
981 | BOOST_UBLAS_INLINE |
---|
982 | vector_slice<const V> subslice (const V &data, typename V::size_type start, typename V::difference_type stride, typename V::size_type size) { |
---|
983 | typedef basic_slice<typename V::size_type, typename V::difference_type> slice_type; |
---|
984 | return vector_slice<const V> (data, slice_type (start, stride, size)); |
---|
985 | } |
---|
986 | |
---|
987 | // Generic Projections |
---|
988 | template<class V> |
---|
989 | BOOST_UBLAS_INLINE |
---|
990 | vector_slice<V> project (V &data, const typename vector_slice<V>::slice_type &s) { |
---|
991 | return vector_slice<V> (data, s); |
---|
992 | } |
---|
993 | template<class V> |
---|
994 | BOOST_UBLAS_INLINE |
---|
995 | const vector_slice<const V> project (const V &data, const typename vector_slice<V>::slice_type &s) { |
---|
996 | // ISSUE was: return vector_slice<V> (const_cast<V &> (data), s); |
---|
997 | return vector_slice<const V> (data, s); |
---|
998 | } |
---|
999 | template<class V> |
---|
1000 | BOOST_UBLAS_INLINE |
---|
1001 | vector_slice<V> project (vector_slice<V> &data, const typename vector_slice<V>::slice_type &s) { |
---|
1002 | return data.project (s); |
---|
1003 | } |
---|
1004 | template<class V> |
---|
1005 | BOOST_UBLAS_INLINE |
---|
1006 | const vector_slice<V> project (const vector_slice<V> &data, const typename vector_slice<V>::slice_type &s) { |
---|
1007 | return data.project (s); |
---|
1008 | } |
---|
1009 | // ISSUE in the following two functions it would be logical to use vector_slice<V>::range_type but this confuses VC7.1 and 8.0 |
---|
1010 | template<class V> |
---|
1011 | BOOST_UBLAS_INLINE |
---|
1012 | vector_slice<V> project (vector_slice<V> &data, const typename vector_range<V>::range_type &r) { |
---|
1013 | return data.project (r); |
---|
1014 | } |
---|
1015 | template<class V> |
---|
1016 | BOOST_UBLAS_INLINE |
---|
1017 | const vector_slice<V> project (const vector_slice<V> &data, const typename vector_range<V>::range_type &r) { |
---|
1018 | return data.project (r); |
---|
1019 | } |
---|
1020 | |
---|
1021 | // Specialization of temporary_traits |
---|
1022 | template <class V> |
---|
1023 | struct vector_temporary_traits< vector_slice<V> > |
---|
1024 | : vector_temporary_traits< V > {} ; |
---|
1025 | |
---|
1026 | |
---|
1027 | // Vector based indirection class |
---|
1028 | // Contributed by Toon Knapen. |
---|
1029 | // Extended and optimized by Kresimir Fresl. |
---|
1030 | template<class V, class IA> |
---|
1031 | class vector_indirect: |
---|
1032 | public vector_expression<vector_indirect<V, IA> > { |
---|
1033 | |
---|
1034 | typedef vector_indirect<V, IA> self_type; |
---|
1035 | public: |
---|
1036 | #ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS |
---|
1037 | using vector_expression<self_type>::operator (); |
---|
1038 | #endif |
---|
1039 | typedef const V const_vector_type; |
---|
1040 | typedef V vector_type; |
---|
1041 | typedef const IA const_indirect_array_type; |
---|
1042 | typedef IA indirect_array_type; |
---|
1043 | typedef typename V::size_type size_type; |
---|
1044 | typedef typename V::difference_type difference_type; |
---|
1045 | typedef typename V::value_type value_type; |
---|
1046 | typedef typename V::const_reference const_reference; |
---|
1047 | typedef typename boost::mpl::if_<boost::is_const<V>, |
---|
1048 | typename V::const_reference, |
---|
1049 | typename V::reference>::type reference; |
---|
1050 | typedef typename boost::mpl::if_<boost::is_const<V>, |
---|
1051 | typename V::const_closure_type, |
---|
1052 | typename V::closure_type>::type vector_closure_type; |
---|
1053 | typedef basic_range<size_type, difference_type> range_type; |
---|
1054 | typedef basic_slice<size_type, difference_type> slice_type; |
---|
1055 | typedef const self_type const_closure_type; |
---|
1056 | typedef self_type closure_type; |
---|
1057 | typedef typename storage_restrict_traits<typename V::storage_category, |
---|
1058 | dense_proxy_tag>::storage_category storage_category; |
---|
1059 | |
---|
1060 | // Construction and destruction |
---|
1061 | BOOST_UBLAS_INLINE |
---|
1062 | vector_indirect (vector_type &data, size_type size): |
---|
1063 | data_ (data), ia_ (size) {} |
---|
1064 | BOOST_UBLAS_INLINE |
---|
1065 | vector_indirect (vector_type &data, const indirect_array_type &ia): |
---|
1066 | data_ (data), ia_ (ia.preprocess (data.size ())) {} |
---|
1067 | BOOST_UBLAS_INLINE |
---|
1068 | vector_indirect (const vector_closure_type &data, const indirect_array_type &ia, int): |
---|
1069 | data_ (data), ia_ (ia.preprocess (data.size ())) {} |
---|
1070 | |
---|
1071 | // Accessors |
---|
1072 | BOOST_UBLAS_INLINE |
---|
1073 | size_type size () const { |
---|
1074 | return ia_.size (); |
---|
1075 | } |
---|
1076 | BOOST_UBLAS_INLINE |
---|
1077 | const_indirect_array_type &indirect () const { |
---|
1078 | return ia_; |
---|
1079 | } |
---|
1080 | BOOST_UBLAS_INLINE |
---|
1081 | indirect_array_type &indirect () { |
---|
1082 | return ia_; |
---|
1083 | } |
---|
1084 | |
---|
1085 | // Storage accessors |
---|
1086 | BOOST_UBLAS_INLINE |
---|
1087 | const vector_closure_type &data () const { |
---|
1088 | return data_; |
---|
1089 | } |
---|
1090 | BOOST_UBLAS_INLINE |
---|
1091 | vector_closure_type &data () { |
---|
1092 | return data_; |
---|
1093 | } |
---|
1094 | |
---|
1095 | // Element access |
---|
1096 | #ifndef BOOST_UBLAS_PROXY_CONST_MEMBER |
---|
1097 | BOOST_UBLAS_INLINE |
---|
1098 | const_reference operator () (size_type i) const { |
---|
1099 | return data_ (ia_ (i)); |
---|
1100 | } |
---|
1101 | BOOST_UBLAS_INLINE |
---|
1102 | reference operator () (size_type i) { |
---|
1103 | return data_ (ia_ (i)); |
---|
1104 | } |
---|
1105 | |
---|
1106 | BOOST_UBLAS_INLINE |
---|
1107 | const_reference operator [] (size_type i) const { |
---|
1108 | return (*this) (i); |
---|
1109 | } |
---|
1110 | BOOST_UBLAS_INLINE |
---|
1111 | reference operator [] (size_type i) { |
---|
1112 | return (*this) (i); |
---|
1113 | } |
---|
1114 | #else |
---|
1115 | BOOST_UBLAS_INLINE |
---|
1116 | reference operator () (size_type i) const { |
---|
1117 | return data_ (ia_ (i)); |
---|
1118 | } |
---|
1119 | |
---|
1120 | BOOST_UBLAS_INLINE |
---|
1121 | reference operator [] (size_type i) const { |
---|
1122 | return (*this) (i); |
---|
1123 | } |
---|
1124 | #endif |
---|
1125 | |
---|
1126 | // ISSUE can this be done in free project function? |
---|
1127 | // Although a const function can create a non-const proxy to a non-const object |
---|
1128 | // Critical is that vector_type and data_ (vector_closure_type) are const correct |
---|
1129 | BOOST_UBLAS_INLINE |
---|
1130 | vector_indirect<vector_type, indirect_array_type> project (const range_type &r) const { |
---|
1131 | return vector_indirect<vector_type, indirect_array_type> (data_, ia_.compose (r.preprocess (data_.size ())), 0); |
---|
1132 | } |
---|
1133 | BOOST_UBLAS_INLINE |
---|
1134 | vector_indirect<vector_type, indirect_array_type> project (const slice_type &s) const { |
---|
1135 | return vector_indirect<vector_type, indirect_array_type> (data_, ia_.compose (s.preprocess (data_.size ())), 0); |
---|
1136 | } |
---|
1137 | BOOST_UBLAS_INLINE |
---|
1138 | vector_indirect<vector_type, indirect_array_type> project (const indirect_array_type &ia) const { |
---|
1139 | return vector_indirect<vector_type, indirect_array_type> (data_, ia_.compose (ia.preprocess (data_.size ())), 0); |
---|
1140 | } |
---|
1141 | |
---|
1142 | // Assignment |
---|
1143 | BOOST_UBLAS_INLINE |
---|
1144 | vector_indirect &operator = (const vector_indirect &vi) { |
---|
1145 | // ISSUE need a temporary, proxy can be overlaping alias |
---|
1146 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (vi)); |
---|
1147 | return *this; |
---|
1148 | } |
---|
1149 | BOOST_UBLAS_INLINE |
---|
1150 | vector_indirect &assign_temporary (vector_indirect &vi) { |
---|
1151 | // assign elements, proxied container remains the same |
---|
1152 | vector_assign<scalar_assign> (*this, vi); |
---|
1153 | return *this; |
---|
1154 | } |
---|
1155 | template<class AE> |
---|
1156 | BOOST_UBLAS_INLINE |
---|
1157 | vector_indirect &operator = (const vector_expression<AE> &ae) { |
---|
1158 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (ae)); |
---|
1159 | return *this; |
---|
1160 | } |
---|
1161 | template<class AE> |
---|
1162 | BOOST_UBLAS_INLINE |
---|
1163 | vector_indirect &assign (const vector_expression<AE> &ae) { |
---|
1164 | vector_assign<scalar_assign> (*this, ae); |
---|
1165 | return *this; |
---|
1166 | } |
---|
1167 | template<class AE> |
---|
1168 | BOOST_UBLAS_INLINE |
---|
1169 | vector_indirect &operator += (const vector_expression<AE> &ae) { |
---|
1170 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this + ae)); |
---|
1171 | return *this; |
---|
1172 | } |
---|
1173 | template<class AE> |
---|
1174 | BOOST_UBLAS_INLINE |
---|
1175 | vector_indirect &plus_assign (const vector_expression<AE> &ae) { |
---|
1176 | vector_assign<scalar_plus_assign> (*this, ae); |
---|
1177 | return *this; |
---|
1178 | } |
---|
1179 | template<class AE> |
---|
1180 | BOOST_UBLAS_INLINE |
---|
1181 | vector_indirect &operator -= (const vector_expression<AE> &ae) { |
---|
1182 | vector_assign<scalar_assign> (*this, typename vector_temporary_traits<V>::type (*this - ae)); |
---|
1183 | return *this; |
---|
1184 | } |
---|
1185 | template<class AE> |
---|
1186 | BOOST_UBLAS_INLINE |
---|
1187 | vector_indirect &minus_assign (const vector_expression<AE> &ae) { |
---|
1188 | vector_assign<scalar_minus_assign> (*this, ae); |
---|
1189 | return *this; |
---|
1190 | } |
---|
1191 | template<class AT> |
---|
1192 | BOOST_UBLAS_INLINE |
---|
1193 | vector_indirect &operator *= (const AT &at) { |
---|
1194 | vector_assign_scalar<scalar_multiplies_assign> (*this, at); |
---|
1195 | return *this; |
---|
1196 | } |
---|
1197 | template<class AT> |
---|
1198 | BOOST_UBLAS_INLINE |
---|
1199 | vector_indirect &operator /= (const AT &at) { |
---|
1200 | vector_assign_scalar<scalar_divides_assign> (*this, at); |
---|
1201 | return *this; |
---|
1202 | } |
---|
1203 | |
---|
1204 | // Closure comparison |
---|
1205 | BOOST_UBLAS_INLINE |
---|
1206 | bool same_closure (const vector_indirect &vr) const { |
---|
1207 | return true; |
---|
1208 | } |
---|
1209 | |
---|
1210 | // Comparison |
---|
1211 | BOOST_UBLAS_INLINE |
---|
1212 | bool operator == (const vector_indirect &vi) const { |
---|
1213 | return (*this).data_ == vi.data_ && ia_ == vi.ia_; |
---|
1214 | } |
---|
1215 | |
---|
1216 | // Swapping |
---|
1217 | BOOST_UBLAS_INLINE |
---|
1218 | void swap (vector_indirect vi) { |
---|
1219 | if (this != &vi) { |
---|
1220 | BOOST_UBLAS_CHECK (size () == vi.size (), bad_size ()); |
---|
1221 | // Sparse ranges may be nonconformant now. |
---|
1222 | // std::swap_ranges (begin (), end (), vi.begin ()); |
---|
1223 | vector_swap<scalar_swap> (*this, vi); |
---|
1224 | } |
---|
1225 | } |
---|
1226 | BOOST_UBLAS_INLINE |
---|
1227 | friend void swap (vector_indirect vi1, vector_indirect vi2) { |
---|
1228 | vi1.swap (vi2); |
---|
1229 | } |
---|
1230 | |
---|
1231 | // Iterator types |
---|
1232 | private: |
---|
1233 | // Use indirect array as an index - FIXME this fails for packed assignment |
---|
1234 | typedef typename IA::const_iterator const_subiterator_type; |
---|
1235 | typedef typename IA::const_iterator subiterator_type; |
---|
1236 | |
---|
1237 | public: |
---|
1238 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
1239 | typedef indexed_iterator<vector_indirect<vector_type, indirect_array_type>, |
---|
1240 | typename vector_type::iterator::iterator_category> iterator; |
---|
1241 | typedef indexed_const_iterator<vector_indirect<vector_type, indirect_array_type>, |
---|
1242 | typename vector_type::const_iterator::iterator_category> const_iterator; |
---|
1243 | #else |
---|
1244 | class const_iterator; |
---|
1245 | class iterator; |
---|
1246 | #endif |
---|
1247 | // Element lookup |
---|
1248 | BOOST_UBLAS_INLINE |
---|
1249 | const_iterator find (size_type i) const { |
---|
1250 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
1251 | return const_iterator (*this, i); |
---|
1252 | #else |
---|
1253 | return const_iterator (*this, ia_.begin () + i); |
---|
1254 | #endif |
---|
1255 | } |
---|
1256 | BOOST_UBLAS_INLINE |
---|
1257 | iterator find (size_type i) { |
---|
1258 | #ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
1259 | return iterator (*this, i); |
---|
1260 | #else |
---|
1261 | return iterator (*this, ia_.begin () + i); |
---|
1262 | #endif |
---|
1263 | } |
---|
1264 | |
---|
1265 | // Iterators simply are indices. |
---|
1266 | |
---|
1267 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
1268 | class const_iterator: |
---|
1269 | public container_const_reference<vector_indirect>, |
---|
1270 | public iterator_base_traits<typename V::const_iterator::iterator_category>::template |
---|
1271 | iterator_base<const_iterator, value_type>::type { |
---|
1272 | public: |
---|
1273 | typedef typename V::const_iterator::difference_type difference_type; |
---|
1274 | typedef typename V::const_iterator::value_type value_type; |
---|
1275 | typedef typename V::const_reference reference; //FIXME due to indexing access |
---|
1276 | typedef typename V::const_iterator::pointer pointer; |
---|
1277 | |
---|
1278 | // Construction and destruction |
---|
1279 | BOOST_UBLAS_INLINE |
---|
1280 | const_iterator (): |
---|
1281 | container_const_reference<self_type> (), it_ () {} |
---|
1282 | BOOST_UBLAS_INLINE |
---|
1283 | const_iterator (const self_type &vi, const const_subiterator_type &it): |
---|
1284 | container_const_reference<self_type> (vi), it_ (it) {} |
---|
1285 | BOOST_UBLAS_INLINE |
---|
1286 | const_iterator (const iterator &it): |
---|
1287 | container_const_reference<self_type> (it ()), it_ (it.it_) {} |
---|
1288 | |
---|
1289 | // Arithmetic |
---|
1290 | BOOST_UBLAS_INLINE |
---|
1291 | const_iterator &operator ++ () { |
---|
1292 | ++ it_; |
---|
1293 | return *this; |
---|
1294 | } |
---|
1295 | BOOST_UBLAS_INLINE |
---|
1296 | const_iterator &operator -- () { |
---|
1297 | -- it_; |
---|
1298 | return *this; |
---|
1299 | } |
---|
1300 | BOOST_UBLAS_INLINE |
---|
1301 | const_iterator &operator += (difference_type n) { |
---|
1302 | it_ += n; |
---|
1303 | return *this; |
---|
1304 | } |
---|
1305 | BOOST_UBLAS_INLINE |
---|
1306 | const_iterator &operator -= (difference_type n) { |
---|
1307 | it_ -= n; |
---|
1308 | return *this; |
---|
1309 | } |
---|
1310 | BOOST_UBLAS_INLINE |
---|
1311 | difference_type operator - (const const_iterator &it) const { |
---|
1312 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1313 | return it_ - it.it_; |
---|
1314 | } |
---|
1315 | |
---|
1316 | // Dereference |
---|
1317 | BOOST_UBLAS_INLINE |
---|
1318 | const_reference operator * () const { |
---|
1319 | // FIXME replace find with at_element |
---|
1320 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
---|
1321 | return (*this) ().data_ (*it_); |
---|
1322 | } |
---|
1323 | |
---|
1324 | // Index |
---|
1325 | BOOST_UBLAS_INLINE |
---|
1326 | size_type index () const { |
---|
1327 | return it_.index (); |
---|
1328 | } |
---|
1329 | |
---|
1330 | // Assignment |
---|
1331 | BOOST_UBLAS_INLINE |
---|
1332 | const_iterator &operator = (const const_iterator &it) { |
---|
1333 | container_const_reference<self_type>::assign (&it ()); |
---|
1334 | it_ = it.it_; |
---|
1335 | return *this; |
---|
1336 | } |
---|
1337 | |
---|
1338 | // Comparison |
---|
1339 | BOOST_UBLAS_INLINE |
---|
1340 | bool operator == (const const_iterator &it) const { |
---|
1341 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1342 | return it_ == it.it_; |
---|
1343 | } |
---|
1344 | BOOST_UBLAS_INLINE |
---|
1345 | bool operator < (const const_iterator &it) const { |
---|
1346 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1347 | return it_ < it.it_; |
---|
1348 | } |
---|
1349 | |
---|
1350 | private: |
---|
1351 | const_subiterator_type it_; |
---|
1352 | }; |
---|
1353 | #endif |
---|
1354 | |
---|
1355 | BOOST_UBLAS_INLINE |
---|
1356 | const_iterator begin () const { |
---|
1357 | return find (0); |
---|
1358 | } |
---|
1359 | BOOST_UBLAS_INLINE |
---|
1360 | const_iterator end () const { |
---|
1361 | return find (size ()); |
---|
1362 | } |
---|
1363 | |
---|
1364 | #ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR |
---|
1365 | class iterator: |
---|
1366 | public container_reference<vector_indirect>, |
---|
1367 | public iterator_base_traits<typename V::iterator::iterator_category>::template |
---|
1368 | iterator_base<iterator, value_type>::type { |
---|
1369 | public: |
---|
1370 | typedef typename V::iterator::difference_type difference_type; |
---|
1371 | typedef typename V::iterator::value_type value_type; |
---|
1372 | typedef typename V::reference reference; //FIXME due to indexing access |
---|
1373 | typedef typename V::iterator::pointer pointer; |
---|
1374 | |
---|
1375 | // Construction and destruction |
---|
1376 | BOOST_UBLAS_INLINE |
---|
1377 | iterator (): |
---|
1378 | container_reference<self_type> (), it_ () {} |
---|
1379 | BOOST_UBLAS_INLINE |
---|
1380 | iterator (self_type &vi, const subiterator_type &it): |
---|
1381 | container_reference<self_type> (vi), it_ (it) {} |
---|
1382 | |
---|
1383 | // Arithmetic |
---|
1384 | BOOST_UBLAS_INLINE |
---|
1385 | iterator &operator ++ () { |
---|
1386 | ++ it_; |
---|
1387 | return *this; |
---|
1388 | } |
---|
1389 | BOOST_UBLAS_INLINE |
---|
1390 | iterator &operator -- () { |
---|
1391 | -- it_; |
---|
1392 | return *this; |
---|
1393 | } |
---|
1394 | BOOST_UBLAS_INLINE |
---|
1395 | iterator &operator += (difference_type n) { |
---|
1396 | it_ += n; |
---|
1397 | return *this; |
---|
1398 | } |
---|
1399 | BOOST_UBLAS_INLINE |
---|
1400 | iterator &operator -= (difference_type n) { |
---|
1401 | it_ -= n; |
---|
1402 | return *this; |
---|
1403 | } |
---|
1404 | BOOST_UBLAS_INLINE |
---|
1405 | difference_type operator - (const iterator &it) const { |
---|
1406 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1407 | return it_ - it.it_; |
---|
1408 | } |
---|
1409 | |
---|
1410 | // Dereference |
---|
1411 | BOOST_UBLAS_INLINE |
---|
1412 | reference operator * () const { |
---|
1413 | // FIXME replace find with at_element |
---|
1414 | BOOST_UBLAS_CHECK (index () < (*this) ().size (), bad_index ()); |
---|
1415 | return (*this) ().data_ (*it_); |
---|
1416 | } |
---|
1417 | |
---|
1418 | // Index |
---|
1419 | BOOST_UBLAS_INLINE |
---|
1420 | size_type index () const { |
---|
1421 | return it_.index (); |
---|
1422 | } |
---|
1423 | |
---|
1424 | // Assignment |
---|
1425 | BOOST_UBLAS_INLINE |
---|
1426 | iterator &operator = (const iterator &it) { |
---|
1427 | container_reference<self_type>::assign (&it ()); |
---|
1428 | it_ = it.it_; |
---|
1429 | return *this; |
---|
1430 | } |
---|
1431 | |
---|
1432 | // Comparison |
---|
1433 | BOOST_UBLAS_INLINE |
---|
1434 | bool operator == (const iterator &it) const { |
---|
1435 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1436 | return it_ == it.it_; |
---|
1437 | } |
---|
1438 | BOOST_UBLAS_INLINE |
---|
1439 | bool operator < (const iterator &it) const { |
---|
1440 | BOOST_UBLAS_CHECK ((*this) ().same_closure (it ()), external_logic ()); |
---|
1441 | return it_ < it.it_; |
---|
1442 | } |
---|
1443 | |
---|
1444 | private: |
---|
1445 | subiterator_type it_; |
---|
1446 | |
---|
1447 | friend class const_iterator; |
---|
1448 | }; |
---|
1449 | #endif |
---|
1450 | |
---|
1451 | BOOST_UBLAS_INLINE |
---|
1452 | iterator begin () { |
---|
1453 | return find (0); |
---|
1454 | } |
---|
1455 | BOOST_UBLAS_INLINE |
---|
1456 | iterator end () { |
---|
1457 | return find (size ()); |
---|
1458 | } |
---|
1459 | |
---|
1460 | // Reverse iterator |
---|
1461 | typedef reverse_iterator_base<const_iterator> const_reverse_iterator; |
---|
1462 | typedef reverse_iterator_base<iterator> reverse_iterator; |
---|
1463 | |
---|
1464 | BOOST_UBLAS_INLINE |
---|
1465 | const_reverse_iterator rbegin () const { |
---|
1466 | return const_reverse_iterator (end ()); |
---|
1467 | } |
---|
1468 | BOOST_UBLAS_INLINE |
---|
1469 | const_reverse_iterator rend () const { |
---|
1470 | return const_reverse_iterator (begin ()); |
---|
1471 | } |
---|
1472 | BOOST_UBLAS_INLINE |
---|
1473 | reverse_iterator rbegin () { |
---|
1474 | return reverse_iterator (end ()); |
---|
1475 | } |
---|
1476 | BOOST_UBLAS_INLINE |
---|
1477 | reverse_iterator rend () { |
---|
1478 | return reverse_iterator (begin ()); |
---|
1479 | } |
---|
1480 | |
---|
1481 | private: |
---|
1482 | vector_closure_type data_; |
---|
1483 | indirect_array_type ia_; |
---|
1484 | }; |
---|
1485 | |
---|
1486 | // Projections |
---|
1487 | template<class V, class A> |
---|
1488 | BOOST_UBLAS_INLINE |
---|
1489 | vector_indirect<V, indirect_array<A> > project (V &data, const indirect_array<A> &ia) { |
---|
1490 | return vector_indirect<V, indirect_array<A> > (data, ia); |
---|
1491 | } |
---|
1492 | template<class V, class A> |
---|
1493 | BOOST_UBLAS_INLINE |
---|
1494 | const vector_indirect<const V, indirect_array<A> > project (const V &data, const indirect_array<A> &ia) { |
---|
1495 | // ISSUE was: return vector_indirect<V, indirect_array<A> > (const_cast<V &> (data), ia) |
---|
1496 | return vector_indirect<const V, indirect_array<A> > (data, ia); |
---|
1497 | } |
---|
1498 | template<class V, class IA> |
---|
1499 | BOOST_UBLAS_INLINE |
---|
1500 | vector_indirect<V, IA> project (vector_indirect<V, IA> &data, const typename vector_indirect<V, IA>::range_type &r) { |
---|
1501 | return data.project (r); |
---|
1502 | } |
---|
1503 | template<class V, class IA> |
---|
1504 | BOOST_UBLAS_INLINE |
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1505 | const vector_indirect<V, IA> project (const vector_indirect<V, IA> &data, const typename vector_indirect<V, IA>::range_type &r) { |
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1506 | return data.project (r); |
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1507 | } |
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1508 | template<class V, class IA> |
---|
1509 | BOOST_UBLAS_INLINE |
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1510 | vector_indirect<V, IA> project (vector_indirect<V, IA> &data, const typename vector_indirect<V, IA>::slice_type &s) { |
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1511 | return data.project (s); |
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1512 | } |
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1513 | template<class V, class IA> |
---|
1514 | BOOST_UBLAS_INLINE |
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1515 | const vector_indirect<V, IA> project (const vector_indirect<V, IA> &data, const typename vector_indirect<V, IA>::slice_type &s) { |
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1516 | return data.project (s); |
---|
1517 | } |
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1518 | template<class V, class A> |
---|
1519 | BOOST_UBLAS_INLINE |
---|
1520 | vector_indirect<V, indirect_array<A> > project (vector_indirect<V, indirect_array<A> > &data, const indirect_array<A> &ia) { |
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1521 | return data.project (ia); |
---|
1522 | } |
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1523 | template<class V, class A> |
---|
1524 | BOOST_UBLAS_INLINE |
---|
1525 | const vector_indirect<V, indirect_array<A> > project (const vector_indirect<V, indirect_array<A> > &data, const indirect_array<A> &ia) { |
---|
1526 | return data.project (ia); |
---|
1527 | } |
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1528 | |
---|
1529 | // Specialization of temporary_traits |
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1530 | template <class V> |
---|
1531 | struct vector_temporary_traits< vector_indirect<V> > |
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1532 | : vector_temporary_traits< V > {} ; |
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1533 | |
---|
1534 | }}} |
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1535 | |
---|
1536 | #endif |
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