expression_types.hpp

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        BOOST_UBLAS_INLINE
        const vector_indirect<const E, indirect_array<A> > project (const indirect_array<A> &ia) const {
            return vector_indirect<const E, indirect_array<A> > (operator () (), ia);
        }
        template<class A>
        BOOST_UBLAS_INLINE
        vector_indirect<E, indirect_array<A> > project (const indirect_array<A> &ia) {
            return vector_indirect<E, indirect_array<A> > (operator () (), ia);
        }
#endif
    };

    // Base class for Vector container models -
    //  it does not model the Vector concept but all derived types should.
    // The class defines a common base type and some common interface for all
    // statically derived Vector classes
    // We implement the casts to the statically derived type.
    template<class C>
    class vector_container:
        public vector_expression<C> {
    public:
        static const unsigned complexity = 0;
        typedef C container_type;
        typedef vector_tag type_category;
 
        BOOST_UBLAS_INLINE
        const container_type &operator () () const {
            return *static_cast<const container_type *> (this);
        }
        BOOST_UBLAS_INLINE
        container_type &operator () () {
            return *static_cast<container_type *> (this);
        }

#ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS
        using vector_expression<C>::operator ();
#endif
    };


    // Base class for Matrix Expression models -
    //  it does not model the Matrix Expression concept but all derived types should.
    // The class defines a common base type and some common interface for all
    // statically derived Matrix Expression classes
    // We implement the casts to the statically derived type.
    template<class E>
    class matrix_expression:
        public ublas_expression<E> {
    public:
        static const unsigned complexity = 0;
        typedef E expression_type;
        typedef matrix_tag type_category;
        /* E can be an incomplete type - to define the following we would need more template arguments
        typedef typename E::size_type size_type;
        */

        BOOST_UBLAS_INLINE
        const expression_type &operator () () const {
            return *static_cast<const expression_type *> (this);
        }
        BOOST_UBLAS_INLINE
        expression_type &operator () () {
            return *static_cast<expression_type *> (this);
        }

#ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS
    private:
        // projection types
        typedef vector_range<E> vector_range_type;
        typedef const vector_range<const E> const_vector_range_type;
        typedef vector_slice<E> vector_slice_type;
        typedef const vector_slice<const E> const_vector_slice_type;
        typedef matrix_row<E> matrix_row_type;
        typedef const matrix_row<const E> const_matrix_row_type;
        typedef matrix_column<E> matrix_column_type;
        typedef const  matrix_column<const E> const_matrix_column_type;
        typedef matrix_range<E> matrix_range_type;
        typedef const matrix_range<const E> const_matrix_range_type;
        typedef matrix_slice<E> matrix_slice_type;
        typedef const matrix_slice<const E> const_matrix_slice_type;
        // matrix_indirect_type will depend on the A template parameter 
        typedef basic_range<> default_range;    // required to avoid range/slice name confusion
        typedef basic_slice<> default_slice;

    public:
        BOOST_UBLAS_INLINE
        const_matrix_row_type operator [] (std::size_t i) const {
            return const_matrix_row_type (operator () (), i);
        }
        BOOST_UBLAS_INLINE
        matrix_row_type operator [] (std::size_t i) {
            return matrix_row_type (operator () (), i);
        }
        BOOST_UBLAS_INLINE
        const_matrix_row_type row (std::size_t i) const {
            return const_matrix_row_type (operator () (), i);
        }
        BOOST_UBLAS_INLINE
        matrix_row_type row (std::size_t i) {
            return matrix_row_type (operator () (), i);
        }
        BOOST_UBLAS_INLINE
        const_matrix_column_type column (std::size_t j) const {
            return const_matrix_column_type (operator () (), j);
        }
        BOOST_UBLAS_INLINE
        matrix_column_type column (std::size_t j) {
            return matrix_column_type (operator () (), j);
        }

        BOOST_UBLAS_INLINE
        const_matrix_range_type operator () (const default_range &r1, const default_range &r2) const {
            return const_matrix_range_type (operator () (), r1, r2);
        }
        BOOST_UBLAS_INLINE
        matrix_range_type operator () (const default_range &r1, const default_range &r2) {
            return matrix_range_type (operator () (), r1, r2);
        }
        BOOST_UBLAS_INLINE
        const_matrix_slice_type operator () (const default_slice &s1, const default_slice &s2) const {
            return const_matrix_slice_type (operator () (), s1, s2);
        }
        BOOST_UBLAS_INLINE
        matrix_slice_type operator () (const default_slice &s1, const default_slice &s2) {
            return matrix_slice_type (operator () (), s1, s2);
        }
        template<class A>
        BOOST_UBLAS_INLINE
        const matrix_indirect<const E, indirect_array<A> > operator () (const indirect_array<A> &ia1, const indirect_array<A> &ia2) const {
            return matrix_indirect<const E, indirect_array<A> > (operator () (), ia1, ia2);
        }
        template<class A>
        BOOST_UBLAS_INLINE
        matrix_indirect<E, indirect_array<A> > operator () (const indirect_array<A> &ia1, const indirect_array<A> &ia2) {
            return matrix_indirect<E, indirect_array<A> > (operator () (), ia1, ia2);
        }

        BOOST_UBLAS_INLINE
        const_matrix_range_type project (const default_range &r1, const default_range &r2) const {
            return const_matrix_range_type (operator () (), r1, r2);
        }
        BOOST_UBLAS_INLINE
        matrix_range_type project (const default_range &r1, const default_range &r2) {
            return matrix_range_type (operator () (), r1, r2);
        }
        BOOST_UBLAS_INLINE
        const_matrix_slice_type project (const default_slice &s1, const default_slice &s2) const {
            return const_matrix_slice_type (operator () (), s1, s2);
        }
        BOOST_UBLAS_INLINE
        matrix_slice_type project (const default_slice &s1, const default_slice &s2) {
            return matrix_slice_type (operator () (), s1, s2);
        }
        template<class A>
        BOOST_UBLAS_INLINE
        const matrix_indirect<const E, indirect_array<A> > project (const indirect_array<A> &ia1, const indirect_array<A> &ia2) const {
            return matrix_indirect<const E, indirect_array<A> > (operator () (), ia1, ia2);
        }
        template<class A>
        BOOST_UBLAS_INLINE
        matrix_indirect<E, indirect_array<A> > project (const indirect_array<A> &ia1, const indirect_array<A> &ia2) {
            return matrix_indirect<E, indirect_array<A> > (operator () (), ia1, ia2);
        }
#endif
    };

#ifdef BOOST_UBLAS_NO_NESTED_CLASS_RELATION
    struct iterator1_tag {};
    struct iterator2_tag {};

    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_iterator_type begin (const I &it, iterator1_tag) {
        return it ().find2 (1, it.index1 (), 0);
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_iterator_type end (const I &it, iterator1_tag) {
        return it ().find2 (1, it.index1 (), it ().size2 ());
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_reverse_iterator_type rbegin (const I &it, iterator1_tag) {
        return typename I::dual_reverse_iterator_type (end (it, iterator1_tag ()));
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_reverse_iterator_type rend (const I &it, iterator1_tag) {
        return typename I::dual_reverse_iterator_type (begin (it, iterator1_tag ()));
    }

    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_iterator_type begin (const I &it, iterator2_tag) {
        return it ().find1 (1, 0, it.index2 ());
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_iterator_type end (const I &it, iterator2_tag) {
        return it ().find1 (1, it ().size1 (), it.index2 ());
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_reverse_iterator_type rbegin (const I &it, iterator2_tag) {
        return typename I::dual_reverse_iterator_type (end (it, iterator2_tag ()));
    }
    template<class I>
    BOOST_UBLAS_INLINE
    typename I::dual_reverse_iterator_type rend (const I &it, iterator2_tag) {
        return typename I::dual_reverse_iterator_type (begin (it, iterator2_tag ()));
    }
#endif

    // Base class for Matrix container models -
    //  it does not model the Matrix concept but all derived types should.
    // The class defines a common base type and some common interface for all
    // statically derived Matrix classes
    // We implement the casts to the statically derived type.
    template<class C>
    class matrix_container:
        public matrix_expression<C> {
    public:
        static const unsigned complexity = 0;
        typedef C container_type;
        typedef matrix_tag type_category;

        BOOST_UBLAS_INLINE
        const container_type &operator () () const {
            return *static_cast<const container_type *> (this);
        }
        BOOST_UBLAS_INLINE
        container_type &operator () () {
            return *static_cast<container_type *> (this);
        }

#ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS
        using matrix_expression<C>::operator ();
#endif
    };

}}}

#endif