boost/test/utils/fixed_mapping.hpp
// (C) Copyright Gennadiy Rozental 2001-2008.
// 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 : $RCSfile$
//
// Version : $Revision: 54633 $
//
// Description : fixed sized mapping with specified invalid value
// ***************************************************************************
#ifndef BOOST_TEST_FIXED_MAPPING_HPP_071894GER
#define BOOST_TEST_FIXED_MAPPING_HPP_071894GER
// Boost
#include <boost/preprocessor/repetition/repeat.hpp>
#include <boost/preprocessor/arithmetic/add.hpp>
#include <boost/call_traits.hpp>
#include <boost/detail/binary_search.hpp>
// STL
#include <vector>
#include <functional>
#include <algorithm>
#include <utility>
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
namespace unit_test {
// configurable maximum fixed sized mapping size supported by this header.
// You can redefine it before inclusion of this file.
#ifndef MAX_MAP_SIZE
#define MAX_MAP_SIZE 20
#endif
#define CONSTR_DECL_MID( z, i, dummy1 ) key_param_type key##i, value_param_type v##i,
#define CONSTR_BODY_MID( z, i, dummy1 ) add_pair( key##i, v##i );
#define CONSTR_DECL( z, n, dummy1 ) \
fixed_mapping( BOOST_PP_REPEAT_ ## z( n, CONSTR_DECL_MID, "" ) \
value_param_type invalid_value ) \
: m_invalid_value( invalid_value ) \
{ \
BOOST_PP_REPEAT_ ## z( n, CONSTR_BODY_MID, "" ) \
init(); \
} \
/**/
#define CONTRUCTORS( n ) BOOST_PP_REPEAT( n, CONSTR_DECL, "" )
template<typename Key, typename Value, typename Compare = std::less<Key> >
class fixed_mapping
{
typedef std::pair<Key,Value> elem_type;
typedef std::vector<elem_type> map_type;
typedef typename std::vector<elem_type>::const_iterator iterator;
typedef typename call_traits<Key>::param_type key_param_type;
typedef typename call_traits<Value>::param_type value_param_type;
typedef typename call_traits<Value>::const_reference value_ref_type;
#if BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
struct p1; friend struct p1;
struct p2; friend struct p2;
#endif
// bind( Compare(), bind(select1st<elem_type>(), _1), bind(identity<Key>(), _2) )
struct p1 : public std::binary_function<elem_type,Key,bool>
{
bool operator()( elem_type const& x, Key const& y ) const { return Compare()( x.first, y ); }
};
// bind( Compare(), bind(select1st<elem_type>(), _1), bind(select1st<elem_type>(), _2) )
struct p2 : public std::binary_function<elem_type,elem_type,bool>
{
bool operator()( elem_type const& x, elem_type const& y ) const { return Compare()( x.first, y.first ); }
};
public:
// Constructors
CONTRUCTORS( BOOST_PP_ADD( MAX_MAP_SIZE, 1 ) )
// key -> value access
value_ref_type operator[]( key_param_type key ) const
{
iterator it = boost::detail::lower_bound( m_map.begin(), m_map.end(), key, p1() );
return (it == m_map.end() || Compare()( key, it->first ) ) ? m_invalid_value : it->second;
}
private:
// Implementation
void init() { std::sort( m_map.begin(), m_map.end(), p2() ); }
void add_pair( key_param_type key, value_param_type value ) { m_map.push_back( elem_type( key, value ) ); }
// Data members
Value m_invalid_value;
map_type m_map;
};
} // namespace unit_test
} // namespace boost
//____________________________________________________________________________//
#include <boost/test/detail/enable_warnings.hpp>
#undef MAX_MAP_SIZE
#undef CONSTR_DECL_MID
#undef CONSTR_BODY_MID
#undef CONSTR_DECL
#undef CONTRUCTORS
#endif // BOOST_TEST_FIXED_MAPPING_HPP_071894GER