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migrated std_pair_iterator and mpl_iterator to iterator_facade

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[SVN r35321]
This commit is contained in:
Joel de Guzman
2006-09-25 13:56:22 +00:00
parent f017aa86ce
commit ac31f6d1cb
20 changed files with 328 additions and 743 deletions
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60
include/boost/fusion/sequence/adapted/array/array_iterator.hpp
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@ -11,7 +11,7 @@
#include <cstddef>
#include <boost/config.hpp>
#include <boost/mpl/size_t.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/minus.hpp>
@ -22,14 +22,14 @@ namespace boost { namespace fusion
{
struct random_access_traversal_tag;
template<typename Array, std::size_t Pos>
template <typename Array, int Pos>
struct array_iterator
: iterator_facade<array_iterator<Array, Pos>, random_access_traversal_tag>
{
BOOST_MPL_ASSERT_RELATION(Pos,>=,0);
BOOST_MPL_ASSERT_RELATION(Pos,<=,std::size_t(Array::static_size));
BOOST_MPL_ASSERT_RELATION(Pos, >=, 0);
BOOST_MPL_ASSERT_RELATION(Pos, <=, Array::static_size);
typedef mpl::size_t<Pos> index;
typedef mpl::int_<Pos> index;
typedef Array array_type;
array_iterator(Array& a)
@ -63,36 +63,6 @@ namespace boost { namespace fusion
}
};
template <typename Iterator>
struct next
{
typedef typename Iterator::array_type array_type;
typedef typename Iterator::index index;
static int const index_val = index::value;
typedef array_iterator<array_type, index_val + 1> type;
static type
call(Iterator const& i)
{
return type(i.array);
}
};
template <typename Iterator>
struct prior
{
typedef typename Iterator::array_type array_type;
typedef typename Iterator::index index;
static int const index_val = index::value;
typedef array_iterator<array_type, index_val - 1> type;
static type
call(Iterator const& i)
{
return type(i.array);
}
};
template <typename Iterator, typename N>
struct advance
{
@ -107,15 +77,23 @@ namespace boost { namespace fusion
}
};
template <typename First, typename Last>
struct distance : mpl::minus<typename Last::index, typename First::index>
template <typename Iterator>
struct next : advance<Iterator, mpl::int_<1> > {};
template <typename Iterator>
struct prior : advance<Iterator, mpl::int_<-1> > {};
template <typename I1, typename I2>
struct distance : mpl::minus<typename I2::index, typename I1::index>
{
typedef typename mpl::minus<
typename Last::index, typename First::index>::type
typedef typename
mpl::minus<
typename I2::index, typename I1::index
>::type
type;
static type
call(First const&, Last const&)
call(I1 const&, I2 const&)
{
return type();
}
@ -123,7 +101,7 @@ namespace boost { namespace fusion
private:
array_iterator<Array, Pos> operator=(const array_iterator<Array, Pos>&);
array_iterator<Array, Pos>& operator=(array_iterator<Array, Pos> const&);
};
}}