580 lines
20 KiB
Plaintext
580 lines
20 KiB
Plaintext
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//
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// Copyright (c) 2000-2002
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// Joerg Walter, Mathias Koch
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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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// The authors gratefully acknowledge the support of
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// GeNeSys mbH & Co. KG in producing this work.
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//
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#ifndef _BOOST_UBLAS_STORAGE_SPARSE_
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#define _BOOST_UBLAS_STORAGE_SPARSE_
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#include <map>
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#include <boost/serialization/collection_size_type.hpp>
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#include <boost/serialization/nvp.hpp>
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#include <boost/serialization/array.hpp>
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#include <boost/serialization/map.hpp>
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#include <boost/serialization/base_object.hpp>
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#include <boost/numeric/ublas/storage.hpp>
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namespace boost { namespace numeric { namespace ublas {
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namespace detail {
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template<class I, class T, class C>
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BOOST_UBLAS_INLINE
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I lower_bound (const I &begin, const I &end, const T &t, C compare) {
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// t <= *begin <=> ! (*begin < t)
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if (begin == end || ! compare (*begin, t))
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return begin;
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if (compare (*(end - 1), t))
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return end;
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return std::lower_bound (begin, end, t, compare);
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}
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template<class I, class T, class C>
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BOOST_UBLAS_INLINE
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I upper_bound (const I &begin, const I &end, const T &t, C compare) {
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if (begin == end || compare (t, *begin))
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return begin;
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// (*end - 1) <= t <=> ! (t < *end)
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if (! compare (t, *(end - 1)))
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return end;
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return std::upper_bound (begin, end, t, compare);
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}
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template<class P>
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struct less_pair {
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BOOST_UBLAS_INLINE
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bool operator () (const P &p1, const P &p2) {
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return p1.first < p2.first;
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}
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};
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template<class T>
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struct less_triple {
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BOOST_UBLAS_INLINE
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bool operator () (const T &t1, const T &t2) {
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return t1.first.first < t2.first.first ||
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(t1.first.first == t2.first.first && t1.first.second < t2.first.second);
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}
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};
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}
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#ifdef BOOST_UBLAS_STRICT_MAP_ARRAY
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template<class A>
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class sparse_storage_element:
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public container_reference<A> {
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public:
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typedef A array_type;
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typedef typename A::key_type index_type;
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typedef typename A::mapped_type data_value_type;
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// typedef const data_value_type &data_const_reference;
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typedef typename type_traits<data_value_type>::const_reference data_const_reference;
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typedef data_value_type &data_reference;
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typedef typename A::value_type value_type;
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typedef value_type *pointer;
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// Construction and destruction
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BOOST_UBLAS_INLINE
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sparse_storage_element (array_type &a, pointer it):
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container_reference<array_type> (a), it_ (it), i_ (it->first), d_ (it->second), dirty_ (false) {}
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BOOST_UBLAS_INLINE
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sparse_storage_element (array_type &a, index_type i):
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container_reference<array_type> (a), it_ (), i_ (i), d_ (), dirty_ (false) {
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pointer it = (*this) ().find (i_);
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if (it == (*this) ().end ())
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it = (*this) ().insert ((*this) ().end (), value_type (i_, d_));
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d_ = it->second;
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}
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BOOST_UBLAS_INLINE
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~sparse_storage_element () {
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if (dirty_) {
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if (! it_)
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it_ = (*this) ().find (i_);
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BOOST_UBLAS_CHECK (it_ != (*this) ().end (), internal_logic ());
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it_->second = d_;
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}
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}
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// Element access - only if data_const_reference is defined
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BOOST_UBLAS_INLINE
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typename data_value_type::data_const_reference
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operator [] (index_type i) const {
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return d_ [i];
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}
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// Assignment
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator = (const sparse_storage_element &p) {
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// Overide the implict copy assignment
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d_ = p.d_;
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dirty_ = true;
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return *this;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator = (const D &d) {
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d_ = d;
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dirty_ = true;
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return *this;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator += (const D &d) {
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d_ += d;
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dirty_ = true;
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return *this;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator -= (const D &d) {
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d_ -= d;
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dirty_ = true;
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return *this;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator *= (const D &d) {
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d_ *= d;
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dirty_ = true;
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return *this;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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sparse_storage_element &operator /= (const D &d) {
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d_ /= d;
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dirty_ = true;
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return *this;
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}
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// Comparison
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template<class D>
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BOOST_UBLAS_INLINE
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bool operator == (const D &d) const {
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return d_ == d;
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}
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template<class D>
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BOOST_UBLAS_INLINE
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bool operator != (const D &d) const {
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return d_ != d;
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}
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// Conversion
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BOOST_UBLAS_INLINE
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operator data_const_reference () const {
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return d_;
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}
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// Swapping
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BOOST_UBLAS_INLINE
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void swap (sparse_storage_element p) {
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if (this != &p) {
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dirty_ = true;
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p.dirty_ = true;
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std::swap (d_, p.d_);
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}
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}
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BOOST_UBLAS_INLINE
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friend void swap (sparse_storage_element p1, sparse_storage_element p2) {
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p1.swap (p2);
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}
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private:
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pointer it_;
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index_type i_;
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data_value_type d_;
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bool dirty_;
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};
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#endif
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// Default map type is simply forwarded to std::map
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// FIXME should use ALLOC for map but std::allocator of std::pair<const I, T> and std::pair<I,T> fail to compile
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template<class I, class T, class ALLOC>
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class map_std : public std::map<I, T /*, ALLOC */> {
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public:
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// Serialization
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template<class Archive>
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void serialize(Archive & ar, const unsigned int /* file_version */){
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ar & serialization::make_nvp("base", boost::serialization::base_object< std::map<I, T /*, ALLOC */> >(*this));
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}
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};
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// Map array
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// Implementation requires pair<I, T> allocator definition (without const)
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template<class I, class T, class ALLOC>
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class map_array {
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public:
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typedef ALLOC allocator_type;
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typedef typename ALLOC::size_type size_type;
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typedef typename ALLOC::difference_type difference_type;
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typedef std::pair<I,T> value_type;
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typedef I key_type;
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typedef T mapped_type;
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typedef const value_type &const_reference;
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typedef value_type &reference;
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typedef const value_type *const_pointer;
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typedef value_type *pointer;
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// Iterators simply are pointers.
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typedef const_pointer const_iterator;
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typedef pointer iterator;
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typedef const T &data_const_reference;
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#ifndef BOOST_UBLAS_STRICT_MAP_ARRAY
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typedef T &data_reference;
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#else
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typedef sparse_storage_element<map_array> data_reference;
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#endif
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// Construction and destruction
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BOOST_UBLAS_INLINE
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map_array (const ALLOC &a = ALLOC()):
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alloc_(a), capacity_ (0), size_ (0) {
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data_ = 0;
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}
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BOOST_UBLAS_INLINE
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map_array (const map_array &c):
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alloc_ (c.alloc_), capacity_ (c.size_), size_ (c.size_) {
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if (capacity_) {
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data_ = alloc_.allocate (capacity_);
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std::uninitialized_copy (data_, data_ + capacity_, c.data_);
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// capacity != size_ requires uninitialized_fill (size_ to capacity_)
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}
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else
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data_ = 0;
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}
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BOOST_UBLAS_INLINE
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~map_array () {
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if (capacity_) {
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std::for_each (data_, data_ + capacity_, static_destroy);
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alloc_.deallocate (data_, capacity_);
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}
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}
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private:
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// Resizing - implicitly exposses uninitialized (but default constructed) mapped_type
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BOOST_UBLAS_INLINE
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void resize (size_type size) {
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BOOST_UBLAS_CHECK (size_ <= capacity_, internal_logic ());
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if (size > capacity_) {
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const size_type capacity = size << 1;
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BOOST_UBLAS_CHECK (capacity, internal_logic ());
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pointer data = alloc_.allocate (capacity);
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std::uninitialized_copy (data_, data_ + (std::min) (size, size_), data);
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std::uninitialized_fill (data + (std::min) (size, size_), data + capacity, value_type ());
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if (capacity_) {
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std::for_each (data_, data_ + capacity_, static_destroy);
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alloc_.deallocate (data_, capacity_);
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}
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capacity_ = capacity;
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data_ = data;
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}
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size_ = size;
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BOOST_UBLAS_CHECK (size_ <= capacity_, internal_logic ());
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}
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public:
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// Reserving
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BOOST_UBLAS_INLINE
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void reserve (size_type capacity) {
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BOOST_UBLAS_CHECK (size_ <= capacity_, internal_logic ());
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// Reduce capacity_ if size_ allows
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BOOST_UBLAS_CHECK (capacity >= size_, bad_size ());
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pointer data;
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if (capacity) {
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data = alloc_.allocate (capacity);
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std::uninitialized_copy (data_, data_ + size_, data);
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std::uninitialized_fill (data + size_, data + capacity, value_type ());
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}
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else
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data = 0;
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if (capacity_) {
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std::for_each (data_, data_ + capacity_, static_destroy);
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alloc_.deallocate (data_, capacity_);
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}
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capacity_ = capacity;
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data_ = data;
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BOOST_UBLAS_CHECK (size_ <= capacity_, internal_logic ());
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}
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// Random Access Container
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BOOST_UBLAS_INLINE
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size_type size () const {
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return size_;
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}
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BOOST_UBLAS_INLINE
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size_type capacity () const {
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return capacity_;
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}
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BOOST_UBLAS_INLINE
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size_type max_size () const {
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return 0; //TODO
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}
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BOOST_UBLAS_INLINE
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bool empty () const {
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return size_ == 0;
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}
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// Element access
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BOOST_UBLAS_INLINE
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data_reference operator [] (key_type i) {
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#ifndef BOOST_UBLAS_STRICT_MAP_ARRAY
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pointer it = find (i);
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if (it == end ())
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it = insert (end (), value_type (i, mapped_type (0)));
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BOOST_UBLAS_CHECK (it != end (), internal_logic ());
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return it->second;
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#else
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return data_reference (*this, i);
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#endif
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}
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// Assignment
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BOOST_UBLAS_INLINE
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map_array &operator = (const map_array &a) {
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if (this != &a) {
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resize (a.size_);
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std::copy (a.data_, a.data_ + a.size_, data_);
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}
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return *this;
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}
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BOOST_UBLAS_INLINE
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map_array &assign_temporary (map_array &a) {
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swap (a);
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return *this;
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}
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// Swapping
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BOOST_UBLAS_INLINE
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void swap (map_array &a) {
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if (this != &a) {
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std::swap (capacity_, a.capacity_);
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std::swap (data_, a.data_);
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std::swap (size_, a.size_);
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}
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}
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BOOST_UBLAS_INLINE
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friend void swap (map_array &a1, map_array &a2) {
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a1.swap (a2);
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}
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// Element insertion and deletion
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// From Back Insertion Sequence concept
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// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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iterator push_back (iterator it, const value_type &p) {
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if (size () == 0 || (it = end () - 1)->first < p.first) {
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resize (size () + 1);
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*(it = end () - 1) = p;
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return it;
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}
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external_logic ().raise ();
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|
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return it;
|
||
|
|
}
|
||
|
|
// Form Unique Associative Container concept
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
std::pair<iterator,bool> insert (const value_type &p) {
|
||
|
|
iterator it = detail::lower_bound (begin (), end (), p, detail::less_pair<value_type> ());
|
||
|
|
if (it != end () && it->first == p.first)
|
||
|
|
return std::make_pair (it, false);
|
||
|
|
difference_type n = it - begin ();
|
||
|
|
resize (size () + 1);
|
||
|
|
it = begin () + n; // allow for invalidation
|
||
|
|
std::copy_backward (it, end () - 1, end ());
|
||
|
|
*it = p;
|
||
|
|
return std::make_pair (it, true);
|
||
|
|
}
|
||
|
|
// Form Sorted Associative Container concept
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
iterator insert (iterator hint, const value_type &p) {
|
||
|
|
return insert (p).first;
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
void erase (iterator it) {
|
||
|
|
BOOST_UBLAS_CHECK (begin () <= it && it < end (), bad_index ());
|
||
|
|
std::copy (it + 1, end (), it);
|
||
|
|
resize (size () - 1);
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
void erase (iterator it1, iterator it2) {
|
||
|
|
if (it1 == it2) return /* nothing to erase */;
|
||
|
|
BOOST_UBLAS_CHECK (begin () <= it1 && it1 < it2 && it2 <= end (), bad_index ());
|
||
|
|
std::copy (it2, end (), it1);
|
||
|
|
resize (size () - (it2 - it1));
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
void clear () {
|
||
|
|
resize (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Element lookup
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
const_iterator find (key_type i) const {
|
||
|
|
const_iterator it (detail::lower_bound (begin (), end (), value_type (i, mapped_type (0)), detail::less_pair<value_type> ()));
|
||
|
|
if (it == end () || it->first != i)
|
||
|
|
it = end ();
|
||
|
|
return it;
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
iterator find (key_type i) {
|
||
|
|
iterator it (detail::lower_bound (begin (), end (), value_type (i, mapped_type (0)), detail::less_pair<value_type> ()));
|
||
|
|
if (it == end () || it->first != i)
|
||
|
|
it = end ();
|
||
|
|
return it;
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
const_iterator lower_bound (key_type i) const {
|
||
|
|
return detail::lower_bound (begin (), end (), value_type (i, mapped_type (0)), detail::less_pair<value_type> ());
|
||
|
|
}
|
||
|
|
// BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
|
||
|
|
iterator lower_bound (key_type i) {
|
||
|
|
return detail::lower_bound (begin (), end (), value_type (i, mapped_type (0)), detail::less_pair<value_type> ());
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_iterator begin () const {
|
||
|
|
return data_;
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_iterator cbegin () const {
|
||
|
|
return begin ();
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_iterator end () const {
|
||
|
|
return data_ + size_;
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_iterator cend () const {
|
||
|
|
return end ();
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
iterator begin () {
|
||
|
|
return data_;
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
iterator end () {
|
||
|
|
return data_ + size_;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Reverse iterators
|
||
|
|
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
|
||
|
|
typedef std::reverse_iterator<iterator> reverse_iterator;
|
||
|
|
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_reverse_iterator rbegin () const {
|
||
|
|
return const_reverse_iterator (end ());
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_reverse_iterator crbegin () const {
|
||
|
|
return rbegin ();
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_reverse_iterator rend () const {
|
||
|
|
return const_reverse_iterator (begin ());
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
const_reverse_iterator crend () const {
|
||
|
|
return rend ();
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
reverse_iterator rbegin () {
|
||
|
|
return reverse_iterator (end ());
|
||
|
|
}
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
reverse_iterator rend () {
|
||
|
|
return reverse_iterator (begin ());
|
||
|
|
}
|
||
|
|
|
||
|
|
// Allocator
|
||
|
|
allocator_type get_allocator () {
|
||
|
|
return alloc_;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Serialization
|
||
|
|
template<class Archive>
|
||
|
|
void serialize(Archive & ar, const unsigned int /* file_version */){
|
||
|
|
serialization::collection_size_type s (size_);
|
||
|
|
ar & serialization::make_nvp("size",s);
|
||
|
|
if (Archive::is_loading::value) {
|
||
|
|
resize(s);
|
||
|
|
}
|
||
|
|
ar & serialization::make_array(data_, s);
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Provide destroy as a non member function
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
static void static_destroy (reference p) {
|
||
|
|
(&p) -> ~value_type ();
|
||
|
|
}
|
||
|
|
ALLOC alloc_;
|
||
|
|
size_type capacity_;
|
||
|
|
pointer data_;
|
||
|
|
size_type size_;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
template<class A, class T>
|
||
|
|
struct map_traits {
|
||
|
|
typedef typename A::mapped_type &reference;
|
||
|
|
};
|
||
|
|
template<class I, class T, class ALLOC>
|
||
|
|
struct map_traits<map_array<I, T, ALLOC>, T > {
|
||
|
|
typedef typename map_array<I, T, ALLOC>::data_reference reference;
|
||
|
|
};
|
||
|
|
|
||
|
|
// reserve helpers for map_array and generic maps
|
||
|
|
// ISSUE should be in map_traits but want to use on all compilers
|
||
|
|
|
||
|
|
template<class M>
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
void map_reserve (M &/* m */, typename M::size_type /* capacity */) {
|
||
|
|
}
|
||
|
|
template<class I, class T, class ALLOC>
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
void map_reserve (map_array<I, T, ALLOC> &m, typename map_array<I, T, ALLOC>::size_type capacity) {
|
||
|
|
m.reserve (capacity);
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class M>
|
||
|
|
struct map_capacity_traits {
|
||
|
|
typedef typename M::size_type type ;
|
||
|
|
type operator() ( M const& m ) const {
|
||
|
|
return m.size ();
|
||
|
|
}
|
||
|
|
} ;
|
||
|
|
|
||
|
|
template<class I, class T, class ALLOC>
|
||
|
|
struct map_capacity_traits< map_array<I, T, ALLOC> > {
|
||
|
|
typedef typename map_array<I, T, ALLOC>::size_type type ;
|
||
|
|
type operator() ( map_array<I, T, ALLOC> const& m ) const {
|
||
|
|
return m.capacity ();
|
||
|
|
}
|
||
|
|
} ;
|
||
|
|
|
||
|
|
template<class M>
|
||
|
|
BOOST_UBLAS_INLINE
|
||
|
|
typename map_capacity_traits<M>::type map_capacity (M const& m) {
|
||
|
|
return map_capacity_traits<M>() ( m );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}}}
|
||
|
|
|
||
|
|
#endif
|