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// (C) Copyright Gennadiy Rozental 2001.
// 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)
// See http://www.boost.org/libs/test for the library home page.
//
///@file
/// Defines monomorphic dataset n+m dimentional *. Samples in this
/// dataset is grid of elements in DataSet1 and DataSet2. There will be total
/// |DataSet1| * |DataSet2| samples
// ***************************************************************************
#ifndef BOOST_TEST_DATA_MONOMORPHIC_GRID_HPP_101512GER
#define BOOST_TEST_DATA_MONOMORPHIC_GRID_HPP_101512GER
// Boost.Test
#include <boost/test/data/config.hpp>
#if !defined(BOOST_TEST_NO_GRID_COMPOSITION_AVAILABLE) || defined(BOOST_TEST_DOXYGEN_DOC__)
#include <boost/test/data/monomorphic/fwd.hpp>
#include <boost/test/data/monomorphic/sample_merge.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
namespace unit_test {
namespace data {
namespace monomorphic {
// ************************************************************************** //
// ************** grid ************** //
// ************************************************************************** //
//! Implements the dataset resulting from a cartesian product/grid operation on datasets.
//!
//! The arity of the resulting dataset is the sum of the arity of its operands.
template<typename DataSet1, typename DataSet2>
class grid {
typedef typename boost::decay<DataSet1>::type dataset1_decay;
typedef typename boost::decay<DataSet2>::type dataset2_decay;
typedef typename dataset1_decay::iterator dataset1_iter;
typedef typename dataset2_decay::iterator dataset2_iter;
public:
struct iterator {
// Constructor
explicit iterator( dataset1_iter iter1, DataSet2 const& ds2 )
: m_iter1( std::move( iter1 ) )
, m_iter2( std::move( ds2.begin() ) )
, m_ds2( &ds2 )
, m_ds2_pos( 0 )
{}
using iterator_sample = decltype(
sample_merge( *std::declval<dataset1_iter>(),
*std::declval<dataset2_iter>()) );
// forward iterator interface
auto operator*() const -> iterator_sample {
return sample_merge( *m_iter1, *m_iter2 );
}
void operator++()
{
++m_ds2_pos;
if( m_ds2_pos != m_ds2->size() )
++m_iter2;
else {
m_ds2_pos = 0;
++m_iter1;
m_iter2 = std::move( m_ds2->begin() );
}
}
private:
// Data members
dataset1_iter m_iter1;
dataset2_iter m_iter2;
dataset2_decay const* m_ds2;
data::size_t m_ds2_pos;
};
public:
enum { arity = boost::decay<DataSet1>::type::arity + boost::decay<DataSet2>::type::arity };
//! Constructor
grid( DataSet1&& ds1, DataSet2&& ds2 )
: m_ds1( std::forward<DataSet1>( ds1 ) )
, m_ds2( std::forward<DataSet2>( ds2 ) )
{}
//! Move constructor
grid( grid&& j )
: m_ds1( std::forward<DataSet1>( j.m_ds1 ) )
, m_ds2( std::forward<DataSet2>( j.m_ds2 ) )
{}
// dataset interface
data::size_t size() const { return m_ds1.size() * m_ds2.size(); }
iterator begin() const { return iterator( m_ds1.begin(), m_ds2 ); }
private:
// Data members
DataSet1 m_ds1;
DataSet2 m_ds2;
};
//____________________________________________________________________________//
// A grid dataset is a dataset
template<typename DataSet1, typename DataSet2>
struct is_dataset<grid<DataSet1,DataSet2>> : mpl::true_ {};
//____________________________________________________________________________//
namespace result_of {
/// Result type of the grid operation on dataset.
template<typename DS1Gen, typename DS2Gen>
struct grid {
typedef monomorphic::grid<typename DS1Gen::type,typename DS2Gen::type> type;
};
} // namespace result_of
//____________________________________________________________________________//
//! Grid operation
template<typename DataSet1, typename DataSet2>
inline typename boost::lazy_enable_if_c<is_dataset<DataSet1>::value && is_dataset<DataSet2>::value,
result_of::grid<mpl::identity<DataSet1>,mpl::identity<DataSet2>>
>::type
operator*( DataSet1&& ds1, DataSet2&& ds2 )
{
BOOST_TEST_DS_ASSERT( !ds1.size().is_inf() && !ds2.size().is_inf(), "Grid axes can't have infinite size" );
return grid<DataSet1,DataSet2>( std::forward<DataSet1>( ds1 ), std::forward<DataSet2>( ds2 ) );
}
//____________________________________________________________________________//
//! @overload boost::unit_test::data::operator*
template<typename DataSet1, typename DataSet2>
inline typename boost::lazy_enable_if_c<is_dataset<DataSet1>::value && !is_dataset<DataSet2>::value,
result_of::grid<mpl::identity<DataSet1>,data::result_of::make<DataSet2>>
>::type
operator*( DataSet1&& ds1, DataSet2&& ds2 )
{
return std::forward<DataSet1>(ds1) * data::make(std::forward<DataSet2>(ds2));
}
//____________________________________________________________________________//
//! @overload boost::unit_test::data::operator*
template<typename DataSet1, typename DataSet2>
inline typename boost::lazy_enable_if_c<!is_dataset<DataSet1>::value && is_dataset<DataSet2>::value,
result_of::grid<data::result_of::make<DataSet1>,mpl::identity<DataSet2>>
>::type
operator*( DataSet1&& ds1, DataSet2&& ds2 )
{
return data::make(std::forward<DataSet1>(ds1)) * std::forward<DataSet2>(ds2);
}
} // namespace monomorphic
} // namespace data
} // namespace unit_test
} // namespace boost
#include <boost/test/detail/enable_warnings.hpp>
#endif // BOOST_TEST_NO_GRID_COMPOSITION_AVAILABLE
#endif // BOOST_TEST_DATA_MONOMORPHIC_GRID_HPP_101512GER
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