127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
/**
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* -*- c++ -*-
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*
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* \file iterator_type.hpp
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*
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* \brief Iterator to a given container type.
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*
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* Copyright (c) 2009, Marco Guazzone
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*
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* Distributed under the Boost Software License, Version 1.0. (See
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* accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* \author Marco Guazzone, marco.guazzone@gmail.com
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*/
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#ifndef BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP
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#define BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP
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#include <boost/numeric/ublas/fwd.hpp>
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#include <boost/numeric/ublas/traits.hpp>
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#include <boost/numeric/ublas/tags.hpp>
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namespace boost { namespace numeric { namespace ublas {
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namespace detail {
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/**
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* \brief Auxiliary class for retrieving the iterator to the given
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* matrix expression according its orientation and to the given dimension tag.
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* \tparam MatrixT A model of MatrixExpression.
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* \tparam TagT A dimension tag type (e.g., tag::major).
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* \tparam OrientationT An orientation category type (e.g., row_major_tag).
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*/
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template <typename MatrixT, typename TagT, typename OrientationT>
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struct iterator_type_impl;
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/// \brief Specialization of \c iterator_type_impl for row-major oriented
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/// matrices and over the major dimension.
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template <typename MatrixT>
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struct iterator_type_impl<MatrixT,tag::major,row_major_tag>
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{
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typedef typename matrix_traits<MatrixT>::iterator1 type;
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};
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/// \brief Specialization of \c iterator_type_impl for column-major oriented
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/// matrices and over the major dimension.
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template <typename MatrixT>
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struct iterator_type_impl<MatrixT,tag::major,column_major_tag>
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{
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typedef typename matrix_traits<MatrixT>::iterator2 type;
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};
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/// \brief Specialization of \c iterator_type_impl for row-major oriented
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/// matrices and over the minor dimension.
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template <typename MatrixT>
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struct iterator_type_impl<MatrixT,tag::minor,row_major_tag>
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{
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typedef typename matrix_traits<MatrixT>::iterator2 type;
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};
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/// \brief Specialization of \c iterator_type_impl for column-major oriented
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/// matrices and over the minor dimension.
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template <typename MatrixT>
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struct iterator_type_impl<MatrixT,tag::minor,column_major_tag>
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{
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typedef typename matrix_traits<MatrixT>::iterator1 type;
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};
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} // Namespace detail
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/**
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* \brief A iterator for the given container type over the given dimension.
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* \tparam ContainerT A container expression type.
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* \tparam TagT A dimension tag type (e.g., tag::major).
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*/
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template <typename ContainerT, typename TagT=void>
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struct iterator_type;
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/**
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* \brief Specialization of \c iterator_type for vector expressions.
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* \tparam VectorT A model of VectorExpression type.
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*/
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template <typename VectorT>
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struct iterator_type<VectorT, void>
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{
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typedef typename vector_traits<VectorT>::iterator type;
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};
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/**
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* \brief Specialization of \c iterator_type for matrix expressions and
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* over the major dimension.
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* \tparam MatrixT A model of MatrixExpression type.
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*/
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template <typename MatrixT>
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struct iterator_type<MatrixT,tag::major>
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{
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typedef typename detail::iterator_type_impl<MatrixT,tag::major,typename matrix_traits<MatrixT>::orientation_category>::type type;
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};
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/**
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* \brief Specialization of \c iterator_type for matrix expressions and
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* over the minor dimension.
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* \tparam MatrixT A model of MatrixExpression type.
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*/
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template <typename MatrixT>
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struct iterator_type<MatrixT,tag::minor>
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{
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typedef typename detail::iterator_type_impl<MatrixT,tag::minor,typename matrix_traits<MatrixT>::orientation_category>::type type;
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};
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}}} // Namespace boost::numeric::ublas
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#endif // BOOST_NUMERIC_UBLAS_TRAITS_ITERATOR_TYPE_HPP
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