1 | /** |
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2 | * -*- c++ -*- |
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3 | * |
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4 | * \file iterator_type.hpp |
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5 | * |
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6 | * \brief Iterator to a given container type. |
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7 | * |
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8 | * Copyright (c) 2009, Marco Guazzone |
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9 | * |
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10 | * Distributed under the Boost Software License, Version 1.0. (See |
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11 | * accompanying file LICENSE_1_0.txt or copy at |
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12 | * http://www.boost.org/LICENSE_1_0.txt) |
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13 | * |
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14 | * \author Marco Guazzone, marco.guazzone@gmail.com |
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15 | */ |
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16 | |
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17 | |
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18 | #ifndef BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP |
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19 | #define BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP |
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20 | |
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21 | |
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22 | #include <boost/numeric/ublas/fwd.hpp> |
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23 | #include <boost/numeric/ublas/traits.hpp> |
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24 | #include <boost/numeric/ublas/tags.hpp> |
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25 | |
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26 | |
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27 | namespace boost { namespace numeric { namespace ublas { |
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28 | |
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29 | namespace detail { |
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30 | |
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31 | /** |
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32 | * \brief Auxiliary class for retrieving the iterator to the given |
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33 | * matrix expression according its orientation and to the given dimension tag. |
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34 | * \tparam MatrixT A model of MatrixExpression. |
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35 | * \tparam TagT A dimension tag type (e.g., tag::major). |
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36 | * \tparam OrientationT An orientation category type (e.g., row_major_tag). |
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37 | */ |
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38 | template <typename MatrixT, typename TagT, typename OrientationT> |
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39 | struct iterator_type_impl; |
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40 | |
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41 | |
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42 | /// \brief Specialization of \c iterator_type_impl for row-major oriented |
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43 | /// matrices and over the major dimension. |
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44 | template <typename MatrixT> |
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45 | struct iterator_type_impl<MatrixT,tag::major,row_major_tag> |
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46 | { |
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47 | typedef typename matrix_traits<MatrixT>::iterator1 type; |
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48 | }; |
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49 | |
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50 | |
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51 | /// \brief Specialization of \c iterator_type_impl for column-major oriented |
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52 | /// matrices and over the major dimension. |
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53 | template <typename MatrixT> |
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54 | struct iterator_type_impl<MatrixT,tag::major,column_major_tag> |
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55 | { |
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56 | typedef typename matrix_traits<MatrixT>::iterator2 type; |
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57 | }; |
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58 | |
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59 | |
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60 | /// \brief Specialization of \c iterator_type_impl for row-major oriented |
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61 | /// matrices and over the minor dimension. |
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62 | template <typename MatrixT> |
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63 | struct iterator_type_impl<MatrixT,tag::minor,row_major_tag> |
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64 | { |
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65 | typedef typename matrix_traits<MatrixT>::iterator2 type; |
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66 | }; |
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67 | |
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68 | |
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69 | /// \brief Specialization of \c iterator_type_impl for column-major oriented |
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70 | /// matrices and over the minor dimension. |
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71 | template <typename MatrixT> |
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72 | struct iterator_type_impl<MatrixT,tag::minor,column_major_tag> |
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73 | { |
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74 | typedef typename matrix_traits<MatrixT>::iterator1 type; |
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75 | }; |
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76 | |
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77 | } // Namespace detail |
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78 | |
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79 | |
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80 | /** |
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81 | * \brief A iterator for the given container type over the given dimension. |
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82 | * \tparam ContainerT A container expression type. |
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83 | * \tparam TagT A dimension tag type (e.g., tag::major). |
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84 | */ |
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85 | template <typename ContainerT, typename TagT=void> |
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86 | struct iterator_type; |
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87 | |
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88 | |
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89 | /** |
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90 | * \brief Specialization of \c iterator_type for vector expressions. |
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91 | * \tparam VectorT A model of VectorExpression type. |
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92 | */ |
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93 | template <typename VectorT> |
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94 | struct iterator_type<VectorT, void> |
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95 | { |
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96 | typedef typename vector_traits<VectorT>::iterator type; |
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97 | }; |
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98 | |
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99 | |
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100 | /** |
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101 | * \brief Specialization of \c iterator_type for matrix expressions and |
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102 | * over the major dimension. |
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103 | * \tparam MatrixT A model of MatrixExpression type. |
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104 | */ |
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105 | template <typename MatrixT> |
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106 | struct iterator_type<MatrixT,tag::major> |
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107 | { |
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108 | typedef typename detail::iterator_type_impl<MatrixT,tag::major,typename matrix_traits<MatrixT>::orientation_category>::type type; |
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109 | }; |
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110 | |
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111 | |
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112 | /** |
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113 | * \brief Specialization of \c iterator_type for matrix expressions and |
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114 | * over the minor dimension. |
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115 | * \tparam MatrixT A model of MatrixExpression type. |
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116 | */ |
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117 | template <typename MatrixT> |
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118 | struct iterator_type<MatrixT,tag::minor> |
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119 | { |
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120 | typedef typename detail::iterator_type_impl<MatrixT,tag::minor,typename matrix_traits<MatrixT>::orientation_category>::type type; |
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121 | }; |
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122 | |
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123 | }}} // Namespace boost::numeric::ublas |
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124 | |
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125 | |
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126 | #endif // BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP |
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