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// (C) Copyright Gennadiy Rozental 2011-2014.
// 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 based on forward iterable sequence
// ***************************************************************************
#ifndef BOOST_TEST_DATA_MONOMORPHIC_COLLECTION_HPP_102211GER
#define BOOST_TEST_DATA_MONOMORPHIC_COLLECTION_HPP_102211GER
// Boost.Test
#include <boost/test/data/config.hpp>
#include <boost/test/data/monomorphic/dataset.hpp>
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
namespace unit_test {
namespace data {
namespace monomorphic {
// ************************************************************************** //
// ************** collection ************** //
// ************************************************************************** //
//!@brief Dataset from a forward iterable container (collection)
//!
//! This dataset is applicable to any container implementing a forward iterator. Note that
//! container with one element will be considered as singletons.
//! This dataset is constructible with the @ref boost::unit_test::data::make function.
//!
//! For compilers supporting r-value references, the collection is moved instead of copied.
template<typename C>
class collection : public monomorphic::dataset<typename boost::decay<C>::type::value_type> {
typedef typename boost::decay<C>::type col_type;
typedef typename col_type::value_type T;
typedef monomorphic::dataset<T> base;
typedef typename base::iter_ptr iter_ptr;
struct iterator : public base::iterator {
// Constructor
explicit iterator( collection<C> const& owner )
: m_iter( owner.col().begin() )
, m_singleton( owner.col().size() == 1 )
{}
// forward iterator interface
virtual T const& operator*() { return *m_iter; }
virtual void operator++() { if( !m_singleton ) ++m_iter; }
private:
// Data members
typename col_type::const_iterator m_iter;
bool m_singleton;
};
public:
enum { arity = 1 };
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
//! Constructor
//! The collection is moved
explicit collection( C&& col ) : m_col( std::forward<C>(col) ) {}
//! Move constructor
collection( collection&& c ) : m_col( std::forward<C>( c.m_col ) ) {}
#else
//! Constructor
//! The collection is copied
explicit collection( C const& col ) : m_col( col ) {}
#endif
//! Returns the underlying collection
C const& col() const { return m_col; }
// dataset interface
virtual data::size_t size() const { return m_col.size(); }
virtual iter_ptr begin() const { return boost::make_shared<iterator>( *this ); }
private:
// Data members
C m_col;
};
//____________________________________________________________________________//
//! A collection from a forward iterable container is a dataset.
template<typename C>
struct is_dataset<collection<C> > : mpl::true_ {};
} // namespace monomorphic
//! @overload boost::unit_test::data::make()
template<typename C>
inline typename BOOST_TEST_ENABLE_IF<is_forward_iterable<C>::value,
monomorphic::collection<C> >::type
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
make( C&& c )
{
return monomorphic::collection<C>( std::forward<C>(c) );
}
#else
make( C const& c )
{
return monomorphic::collection<C>( c );
}
#endif
//____________________________________________________________________________//
} // namespace data
} // namespace unit_test
} // namespace boost
#include <boost/test/detail/enable_warnings.hpp>
#endif // BOOST_TEST_DATA_MONOMORPHIC_COLLECTION_HPP_102211GER
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