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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 : defines and implements inline model of program environment
// ***************************************************************************
#ifndef BOOST_TEST_UTILS_RUNTIME_ENV_ENVIRONMENT_HPP
#define BOOST_TEST_UTILS_RUNTIME_ENV_ENVIRONMENT_HPP
#ifdef UNDER_CE
#error Windows CE does not support environment variables.
#endif
// Boost.Runtime.Parameter
#include <boost/test/utils/runtime/config.hpp>
#include <boost/test/utils/runtime/fwd.hpp>
#include <boost/test/utils/runtime/argument.hpp>
#include <boost/test/utils/runtime/interpret_argument_value.hpp>
#include <boost/test/utils/runtime/env/fwd.hpp>
#include <boost/test/utils/runtime/env/modifier.hpp>
#include <boost/test/utils/runtime/env/variable.hpp>
// Boost
#include <boost/optional.hpp>
namespace boost {
namespace BOOST_TEST_UTILS_RUNTIME_PARAM_NAMESPACE {
// ************************************************************************** //
// ************** runtime::environment implementation ************** //
// ************************************************************************** //
namespace environment {
namespace rt_env_detail {
template<typename T, typename Modifiers>
variable_data&
init_new_var( cstring var_name, Modifiers m = nfp::no_params )
{
rt_env_detail::variable_data& new_vd = new_var_record( var_name );
cstring str_value = sys_read_var( new_vd.m_var_name );
if( !str_value.is_empty() ) {
BOOST_TEST_IMPL_TRY {
boost::optional<T> value;
if( m.has( interpreter ) )
m[interpreter]( str_value, value );
else
interpret_argument_value( str_value, value, 0 );
if( !!value ) {
new_vd.m_value.reset( new typed_argument<T>( new_vd ) );
arg_value<T>( *new_vd.m_value ) = *value;
}
}
BOOST_TEST_IMPL_CATCHALL() { // !! could we do that
// !! should we report an error?
}
}
if( !new_vd.m_value && m.has( default_value ) ) {
new_vd.m_value.reset( new typed_argument<T>( new_vd ) );
nfp::optionally_assign( arg_value<T>( *new_vd.m_value ), m[default_value] );
}
nfp::optionally_assign( new_vd.m_global_id, m, global_id );
return new_vd;
}
//____________________________________________________________________________//
} // namespace rt_env_detail
} // namespace environment
// ************************************************************************** //
// ************** runtime::environment ************** //
// ************************************************************************** //
namespace environment {
// variable access
variable_base
var( cstring var_name );
//________________________________________________________________________//
template<typename T>
inline variable<T>
var( cstring var_name )
{
rt_env_detail::variable_data* vd = rt_env_detail::find_var_record( var_name );
return environment::variable<T>( !vd ? rt_env_detail::init_new_var<T>( var_name, nfp::no_params ) : *vd );
}
//________________________________________________________________________//
template<typename T, typename Modifiers>
inline variable<T>
var( cstring var_name, Modifiers const& m )
{
rt_env_detail::variable_data* vd = rt_env_detail::find_var_record( var_name );
return environment::variable<T>( !vd ? rt_env_detail::init_new_var<T>( var_name, m ) : *vd );
}
//________________________________________________________________________//
// direct variable value access
inline cstring
get( cstring var_name )
{
return environment::var<cstring>( var_name ).value();
}
//________________________________________________________________________//
template<typename T>
inline T const&
get( cstring var_name )
{
return environment::var<T>( var_name ).value();
}
//________________________________________________________________________//
template<typename T>
inline void
get( cstring var_name, boost::optional<T>& res )
{
variable<T> const& v = environment::var<T>( var_name );
v.value( res );
}
//________________________________________________________________________//
} // namespace environment
namespace env = environment;
} // namespace BOOST_TEST_UTILS_RUNTIME_PARAM_NAMESPACE
} // namespace boost
#ifndef BOOST_TEST_UTILS_RUNTIME_PARAM_OFFLINE
#ifndef BOOST_TEST_UTILS_RUNTIME_PARAM_INLINE
# define BOOST_TEST_UTILS_RUNTIME_PARAM_INLINE inline
#endif
# include <boost/test/utils/runtime/env/environment.ipp>
#endif
#endif // BOOST_TEST_UTILS_RUNTIME_ENV_ENVIRONMENT_HPP
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