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// (C) Copyright Gennadiy Rozental 2005-2008.
// Use, modification, and distribution are subject to 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 : $Revision$
//
// Description : generic typed_argument_factory implementation
// ***************************************************************************
#ifndef BOOST_RT_CLA_ARGUMENT_FACTORY_HPP_062604GER
#define BOOST_RT_CLA_ARGUMENT_FACTORY_HPP_062604GER
// Boost.Runtime.Parameter
#include <boost/test/utils/runtime/config.hpp>
#include <boost/test/utils/runtime/fwd.hpp>
#include <boost/test/utils/runtime/validation.hpp>
#include <boost/test/utils/runtime/argument.hpp>
#include <boost/test/utils/runtime/trace.hpp>
#include <boost/test/utils/runtime/interpret_argument_value.hpp>
#include <boost/test/utils/runtime/cla/fwd.hpp>
#include <boost/test/utils/runtime/cla/value_generator.hpp>
#include <boost/test/utils/runtime/cla/value_handler.hpp>
#include <boost/test/utils/runtime/cla/validation.hpp>
#include <boost/test/utils/runtime/cla/argv_traverser.hpp>
#include <boost/test/utils/runtime/cla/detail/argument_value_usage.hpp>
#include <boost/test/utils/runtime/cla/iface/argument_factory.hpp>
// Boost.Test
#include <boost/test/utils/callback.hpp>
// Boost
#include <boost/optional.hpp>
namespace boost {
namespace BOOST_RT_PARAM_NAMESPACE {
namespace cla {
// ************************************************************************** //
// ************** default_value_interpreter ************** //
// ************************************************************************** //
namespace rt_cla_detail {
struct default_value_interpreter {
template<typename T>
void operator()( argv_traverser& tr, boost::optional<T>& value )
{
if( interpret_argument_value( tr.token(), value, 0 ) )
tr.next_token();
}
};
} // namespace rt_cla_detail
// ************************************************************************** //
// ************** typed_argument_factory ************** //
// ************************************************************************** //
template<typename T>
struct typed_argument_factory : public argument_factory {
// Constructor
typed_argument_factory()
: m_value_interpreter( rt_cla_detail::default_value_interpreter() )
{}
BOOST_RT_PARAM_UNNEEDED_VIRTUAL ~typed_argument_factory() {}
// properties modification
template<typename Modifier>
void accept_modifier( Modifier const& m )
{
optionally_assign( m_value_handler, m, handler );
optionally_assign( m_value_interpreter, m, interpreter );
if( m.has( default_value ) ) {
BOOST_RT_PARAM_VALIDATE_LOGIC( !m_value_generator,
BOOST_RT_PARAM_LITERAL( "multiple value generators for parameter" ) );
T const& dv_ref = m[default_value];
m_value_generator = rt_cla_detail::const_generator<T>( dv_ref );
}
if( m.has( default_refer_to ) ) {
BOOST_RT_PARAM_VALIDATE_LOGIC( !m_value_generator,
BOOST_RT_PARAM_LITERAL( "multiple value generators for parameter" ) );
cstring ref_id = m[default_refer_to];
m_value_generator = rt_cla_detail::ref_generator<T>( ref_id );
}
if( m.has( assign_to ) ) {
BOOST_RT_PARAM_VALIDATE_LOGIC( !m_value_handler,
BOOST_RT_PARAM_LITERAL( "multiple value handlers for parameter" ) );
m_value_handler = rt_cla_detail::assigner<T>( m[assign_to] );
}
}
// Argument factory implementation
virtual argument_ptr produce_using( parameter& p, argv_traverser& tr );
virtual argument_ptr produce_using( parameter& p, parser const& );
virtual void argument_usage_info( format_stream& fs );
// !! private?
// Data members
unit_test::callback2<parameter const&,T&> m_value_handler;
unit_test::callback2<parser const&,boost::optional<T>&> m_value_generator;
unit_test::callback2<argv_traverser&,boost::optional<T>&> m_value_interpreter;
};
//____________________________________________________________________________//
template<typename T>
inline argument_ptr
typed_argument_factory<T>::produce_using( parameter& p, argv_traverser& tr )
{
boost::optional<T> value;
try {
m_value_interpreter( tr, value );
}
catch( ... ) { // !! should we do that?
BOOST_RT_PARAM_TRACE( "Fail to parse argument value" );
if( !p.p_optional_value )
throw;
}
argument_ptr actual_arg = p.actual_argument();
BOOST_RT_CLA_VALIDATE_INPUT( !!value || p.p_optional_value, tr,
BOOST_RT_PARAM_LITERAL( "Argument value missing for parameter " ) << p.id_2_report() );
BOOST_RT_CLA_VALIDATE_INPUT( !actual_arg || p.p_multiplicable, tr,
BOOST_RT_PARAM_LITERAL( "Unexpected repetition of the parameter " ) << p.id_2_report() );
if( !!value && !!m_value_handler )
m_value_handler( p, *value );
if( !p.p_multiplicable )
actual_arg.reset( p.p_optional_value && (rtti::type_id<T>() != rtti::type_id<bool>())
? static_cast<argument*>(new typed_argument<boost::optional<T> >( p, value ))
: static_cast<argument*>(new typed_argument<T>( p, *value )) );
else {
typedef std::list<boost::optional<T> > optional_list;
if( !actual_arg )
actual_arg.reset( p.p_optional_value
? static_cast<argument*>(new typed_argument<optional_list>( p ))
: static_cast<argument*>(new typed_argument<std::list<T> >( p )) );
if( p.p_optional_value ) {
optional_list& values = arg_value<optional_list>( *actual_arg );
values.push_back( value );
}
else {
std::list<T>& values = arg_value<std::list<T> >( *actual_arg );
values.push_back( *value );
}
}
return actual_arg;
}
//____________________________________________________________________________//
template<typename T>
inline argument_ptr
typed_argument_factory<T>::produce_using( parameter& p, parser const& pa )
{
argument_ptr actual_arg;
if( !m_value_generator )
return actual_arg;
boost::optional<T> value;
m_value_generator( pa, value );
if( !value )
return actual_arg;
if( !!m_value_handler )
m_value_handler( p, *value );
actual_arg.reset( new typed_argument<T>( p, *value ) );
return actual_arg;
}
//____________________________________________________________________________//
template<typename T>
inline void
typed_argument_factory<T>::argument_usage_info( format_stream& fs )
{
rt_cla_detail::argument_value_usage( fs, 0, reinterpret_cast<T*>(0) );
}
//____________________________________________________________________________//
} // namespace boost
} // namespace BOOST_RT_PARAM_NAMESPACE
} // namespace cla
#endif // BOOST_RT_CLA_ARGUMENT_FACTORY_HPP_062604GER
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