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// (C) Copyright Gennadiy Rozental 2005-2014.
// 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 : $RCSfile$
//
// Version : $Revision$
//
// Description : default algorithms for string to specific type convertions
// ***************************************************************************
#ifndef BOOST_TEST_UTILS_RUNTIME_INTERPRET_ARGUMENT_VALUE_HPP
#define BOOST_TEST_UTILS_RUNTIME_INTERPRET_ARGUMENT_VALUE_HPP
// 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_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_PARAM_TRACE( "In interpret_argument_value_impl<" << typeid(T).name() << ">" );
res = lexical_cast<T>( source );
BOOST_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_PARAM_TRACE( "In interpret_argument_value_impl<bool>" );
static literal_cstring YES( BOOST_TEST_UTILS_RUNTIME_PARAM_CSTRING_LITERAL( "YES" ) );
static literal_cstring Y( BOOST_TEST_UTILS_RUNTIME_PARAM_CSTRING_LITERAL( "Y" ) );
static literal_cstring NO( BOOST_TEST_UTILS_RUNTIME_PARAM_CSTRING_LITERAL( "NO" ) );
static literal_cstring N( BOOST_TEST_UTILS_RUNTIME_PARAM_CSTRING_LITERAL( "N" ) );
static literal_cstring one( BOOST_TEST_UTILS_RUNTIME_PARAM_CSTRING_LITERAL( "1" ) );
static literal_cstring zero( BOOST_TEST_UTILS_RUNTIME_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 source.is_empty();
}
}
};
//____________________________________________________________________________//
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_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_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_TEST_UTILS_RUNTIME_PARAM_NAMESPACE
} // namespace boost
#endif // BOOST_TEST_UTILS_RUNTIME_INTERPRET_ARGUMENT_VALUE_HPP
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