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/* concepts.hpp
*
* Copyright Steven Watanabe 2011
* 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)
*
* $Id$
*
*/
#ifndef BOOST_RANDOM_TEST_CONCEPTS_HPP
#define BOOST_RANDOM_TEST_CONCEPTS_HPP
#include <boost/config.hpp>
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4100)
#endif
#include <boost/concept_check.hpp>
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
#include <boost/random/detail/seed.hpp>
#include <boost/random/detail/seed_impl.hpp>
#include <boost/concept_archetype.hpp>
#include <boost/concept/requires.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/type_traits/is_arithmetic.hpp>
#include <boost/type_traits/is_integral.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/cstdint.hpp>
#include <boost/static_assert.hpp>
#include <istream>
#include <ostream>
#ifdef BOOST_MSVC
#pragma warning(push)
#pragma warning(disable:4510)
#pragma warning(disable:4610)
#endif
namespace boost {
namespace random {
namespace test {
template<class Base = null_archetype<> >
struct seed_seq_archetype : Base
{
template<class Iter>
BOOST_CONCEPT_REQUIRES(
((Mutable_RandomAccessIterator<Iter>))
((UnsignedInteger<typename Mutable_RandomAccessIterator<Iter>::value_type>)),
(void))
generate(Iter, Iter) {}
};
template<class R = unsigned, class Base = null_archetype<> >
struct uniform_random_number_generator_archetype : Base
{
typedef R result_type;
static R min BOOST_PREVENT_MACRO_SUBSTITUTION () { return 0; }
static R max BOOST_PREVENT_MACRO_SUBSTITUTION () { return 0; }
R operator()() { return 0; }
};
template<class SSeq>
struct SeedSeq
{
public:
BOOST_CONCEPT_USAGE(SeedSeq)
{
q.generate(rb, re);
}
private:
SSeq q;
mutable_random_access_iterator_archetype<boost::uint32_t> rb, re;
};
template<class T>
struct Streamable
{
public:
BOOST_CONCEPT_USAGE(Streamable)
{
os << x;
is >> v;
wos << x;
wis >> v;
}
private:
const T x;
T v;
std::istream is;
std::ostream os;
std::wistream wis;
std::wostream wos;
};
// Type deduction will fail unless the arguments have the same type.
template <typename T>
void same_type(T const&, T const&) {}
template <class E>
struct RandomNumberEngine :
DefaultConstructible<E>,
CopyConstructible<E>,
Assignable<E>,
EqualityComparable<E>,
Streamable<E>
{
public:
typedef typename E::result_type result_type;
// relaxed from the standard
BOOST_MPL_ASSERT((boost::is_arithmetic<result_type>));
// backwards compatibility check
BOOST_STATIC_ASSERT(!E::has_fixed_range);
// a generator can be used to seed another generator (extension)
BOOST_CONCEPT_ASSERT((SeedSeq<E>));
BOOST_CONCEPT_USAGE(RandomNumberEngine)
{
same_type(e(), result_type());
same_type((E::min)(), result_type());
same_type((E::max)(), result_type());
(void)E();
(void)E(s);
(void)E(q);
e.seed();
e.seed(s);
e.seed(q);
e.discard(z);
// extension
#if 0
(void)E(sb, se);
e.seed(sb, se);
#endif
}
private:
E e;
E v;
const E x;
seed_seq_archetype<> q;
typename boost::random::detail::seed_type<result_type>::type s;
uintmax_t z;
input_iterator_archetype<boost::uint32_t> sb, se;
};
template<class D>
struct RandomNumberDistribution :
DefaultConstructible<D>,
CopyConstructible<D>,
Assignable<D>,
EqualityComparable<D>,
Streamable<D>
{
public:
typedef typename D::result_type result_type;
typedef typename D::param_type param_type;
// backwards compatibility
typedef typename D::input_type input_type;
typedef param_type P;
BOOST_CONCEPT_ASSERT((DefaultConstructible<P>));
BOOST_CONCEPT_ASSERT((CopyConstructible<P>));
BOOST_CONCEPT_ASSERT((Assignable<P>));
BOOST_CONCEPT_ASSERT((EqualityComparable<P>));
BOOST_CONCEPT_ASSERT((Streamable<P>));
BOOST_MPL_ASSERT((boost::is_same<typename P::distribution_type, D>));
BOOST_CONCEPT_USAGE(RandomNumberDistribution)
{
(void)D(p);
d.reset();
same_type(x.param(), p);
d.param(p);
same_type(d(g), result_type());
same_type(d(g, p), result_type());
same_type((x.min)(), result_type());
same_type((x.max)(), result_type());
}
private:
D d;
const D x;
const P p;
uniform_random_number_generator_archetype<> g;
};
}
}
}
#ifdef BOOST_MSVC
#pragma warning(pop)
#endif
#endif
|
