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Made map random access. Thanks to Brandon Kohn!

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[SVN r74882]
This commit is contained in:
Joel de Guzman
2011-10-10 09:55:52 +00:00
parent b6df98e86c
commit 10274e7884
5 changed files with 73 additions and 9 deletions
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52
test/sequence/map.cpp
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@ -1,7 +1,7 @@
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Distributed under the Boost Software License, Version 1.0. (See accompanying
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#include <boost/detail/lightweight_test.hpp>
@ -20,6 +20,8 @@
#include <boost/fusion/support/category_of.hpp>
#include <boost/static_assert.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/at.hpp>
#include <boost/typeof/typeof.hpp>
#include <iostream>
#include <string>
@ -39,18 +41,19 @@ main()
{
typedef map<
pair<int, char>
, pair<double, std::string> >
, pair<double, std::string> >
map_type;
BOOST_MPL_ASSERT((traits::is_associative<map_type>));
BOOST_MPL_ASSERT((traits::is_random_access<map_type>));
map_type m(
make_pair<int>('X')
, make_pair<double>("Men"));
std::cout << at_key<int>(m) << std::endl;
std::cout << at_key<double>(m) << std::endl;
BOOST_TEST(at_key<int>(m) == 'X');
BOOST_TEST(at_key<double>(m) == "Men");
@ -58,7 +61,7 @@ main()
boost::is_same<boost::fusion::result_of::value_at_key<map_type, int>::type, char>::value));
BOOST_STATIC_ASSERT((
boost::is_same<boost::fusion::result_of::value_at_key<map_type, double>::type, std::string>::value));
std::cout << m << std::endl;
BOOST_STATIC_ASSERT((boost::fusion::result_of::has_key<map_type, int>::value));
@ -75,8 +78,43 @@ main()
BOOST_STATIC_ASSERT((boost::is_same<boost::fusion::result_of::key_of<boost::fusion::result_of::next<boost::fusion::result_of::begin<map_type>::type>::type>::type, double>::value));
BOOST_STATIC_ASSERT((boost::is_same<boost::fusion::result_of::value_of_data<boost::fusion::result_of::begin<map_type>::type>::type, char>::value));
BOOST_STATIC_ASSERT((boost::is_same<boost::fusion::result_of::value_of_data<boost::fusion::result_of::next<boost::fusion::result_of::begin<map_type>::type>::type>::type, std::string>::value));
//! Test random access interface.
pair<int, char> a = at_c<0>(m);
pair<double, std::string> b = at_c<1>(m);
}
//! iterators & random access interface.
{
typedef pair<boost::mpl::int_<0>, std::string> pair0;
typedef pair<boost::mpl::int_<1>, std::string> pair1;
typedef pair<boost::mpl::int_<2>, std::string> pair2;
typedef pair<boost::mpl::int_<3>, std::string> pair3;
typedef pair<boost::mpl::int_<4>, std::string> pair4;
typedef map< pair0, pair1, pair2, pair3, pair4 > map_type;
map_type m( pair0("zero"), pair1("one"), pair2("two"), pair3("three"), pair4("four") );
BOOST_AUTO( it0, begin(m) );
BOOST_TEST((deref(it0) == pair0("zero")));
BOOST_AUTO( it1, fusion::next(it0) );
BOOST_TEST((deref(it1) == pair1("one")));
BOOST_AUTO( it2, fusion::next(it1) );
BOOST_TEST((deref(it2) == pair2("two")));
BOOST_AUTO( it3, fusion::next(it2) );
BOOST_TEST((deref(it3) == pair3("three")));
BOOST_AUTO( it4, fusion::next(it3) );
BOOST_TEST((deref(it4) == pair4("four")));
BOOST_TEST((deref(fusion::advance_c<4>(it0)) == deref(it4)));
//! Bi-directional
BOOST_TEST((deref(fusion::prior(it4)) == deref(it3) ));
BOOST_TEST((deref(fusion::prior(it3)) == deref(it2) ));
BOOST_TEST((deref(fusion::prior(it2)) == deref(it1) ));
BOOST_TEST((deref(fusion::prior(it1)) == deref(it0) ));
}
{
std::cout << make_map<char, int>('X', 123) << std::endl;
BOOST_TEST(at_key<char>(make_map<char, int>('X', 123)) == 'X');