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+// (C) Copyright Gennadiy Rozental 2005-2008.
+// 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: 49312 $
+//
+// Description : default algorithms for string to specific type convertions
+// ***************************************************************************
+
+#ifndef BOOST_RT_INTERPRET_ARGUMENT_VALUE_HPP_062604GER
+#define BOOST_RT_INTERPRET_ARGUMENT_VALUE_HPP_062604GER
+
+// Boost.Runtime.Parameter
+#include <boost/test/utils/runtime/config.hpp>
+#include <boost/test/utils/runtime/trace.hpp>
+
+// Boost.Test
+#include <boost/test/utils/basic_cstring/io.hpp>
+#include <boost/test/utils/basic_cstring/compare.hpp>
+
+// Boost
+#include <boost/optional.hpp>
+#include <boost/lexical_cast.hpp>
+
+// STL
+// !! could we eliminate these includes?
+#include <list>
+
+namespace boost {
+
+namespace BOOST_RT_PARAM_NAMESPACE {
+
+// ************************************************************************** //
+// ************** runtime::interpret_argument_value ************** //
+// ************************************************************************** //
+// returns true if source is used false otherwise
+
+// generic case
+template<typename T>
+struct interpret_argument_value_impl {
+ static bool _( cstring source, boost::optional<T>& res )
+ {
+ BOOST_RT_PARAM_TRACE( "In interpret_argument_value_impl<" << typeid(T).name() << ">" );
+
+ res = lexical_cast<T>( source );
+
+ BOOST_RT_PARAM_TRACE( "String " << source << " is interpreted as " << *res );
+ return true;
+ }
+};
+
+
+//____________________________________________________________________________//
+
+// dstring case
+template<>
+struct interpret_argument_value_impl<dstring> {
+ static bool _( cstring source, boost::optional<dstring>& res )
+ {
+ BOOST_RT_PARAM_TRACE( "In interpret_argument_value_impl<dstring>" );
+
+ res = dstring();
+ assign_op( *res, source, 0 );
+
+ return true;
+ }
+};
+
+//____________________________________________________________________________//
+
+// cstring case
+template<>
+struct interpret_argument_value_impl<cstring> {
+ static bool _( cstring source, boost::optional<cstring>& res )
+ {
+ BOOST_RT_PARAM_TRACE( "In interpret_argument_value_impl<cstring>" );
+
+ res = source;
+
+ return true;
+ }
+};
+
+//____________________________________________________________________________//
+
+// specialization for type bool
+template<>
+struct interpret_argument_value_impl<bool> {
+ static bool _( cstring source, boost::optional<bool>& res )
+ {
+ BOOST_RT_PARAM_TRACE( "In interpret_argument_value_impl<bool>" );
+
+ static literal_cstring YES( BOOST_RT_PARAM_CSTRING_LITERAL( "YES" ) );
+ static literal_cstring Y( BOOST_RT_PARAM_CSTRING_LITERAL( "Y" ) );
+ static literal_cstring NO( BOOST_RT_PARAM_CSTRING_LITERAL( "NO" ) );
+ static literal_cstring N( BOOST_RT_PARAM_CSTRING_LITERAL( "N" ) );
+ static literal_cstring one( BOOST_RT_PARAM_CSTRING_LITERAL( "1" ) );
+ static literal_cstring zero( BOOST_RT_PARAM_CSTRING_LITERAL( "0" ) );
+
+ source.trim();
+
+ if( case_ins_eq( source, YES ) || case_ins_eq( source, Y ) || case_ins_eq( source, one ) ) {
+ res = true;
+ return true;
+ }
+ else if( case_ins_eq( source, NO ) || case_ins_eq( source, N ) || case_ins_eq( source, zero ) ) {
+ res = false;
+ return true;
+ }
+ else {
+ res = true;
+ return false;
+ }
+ }
+};
+
+//____________________________________________________________________________//
+
+template<typename T>
+inline bool
+interpret_argument_value( cstring source, boost::optional<T>& res, long )
+{
+ return interpret_argument_value_impl<T>::_( source, res );
+}
+
+//____________________________________________________________________________//
+
+// specialization for list of values
+template<typename T>
+inline bool
+interpret_argument_value( cstring source, boost::optional<std::list<T> >& res, int )
+{
+ BOOST_RT_PARAM_TRACE( "In interpret_argument_value<std::list<T>>" );
+
+ res = std::list<T>();
+
+ while( !source.is_empty() ) {
+ // !! should we use token_iterator
+ cstring::iterator single_value_end = std::find( source.begin(), source.end(), BOOST_RT_PARAM_LITERAL( ',' ) );
+
+ boost::optional<T> value;
+ interpret_argument_value( cstring( source.begin(), single_value_end ), value, 0 );
+
+ res->push_back( *value );
+
+ source.trim_left( single_value_end + 1 );
+ }
+
+ return true;
+}
+
+//____________________________________________________________________________//
+
+} // namespace BOOST_RT_PARAM_NAMESPACE
+
+} // namespace boost
+
+#endif // BOOST_RT_INTERPRET_ARGUMENT_VALUE_HPP_062604GER