//  (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 : environment subsystem forward declarations
// ***************************************************************************

#ifndef BOOST_TEST_UTILS_RUNTIME_ENV_FWD_HPP
#define BOOST_TEST_UTILS_RUNTIME_ENV_FWD_HPP

#ifdef UNDER_CE
#error Windows CE does not support environment variables.
#endif

// Boost.Runtime.Parameter
#include <boost/test/utils/runtime/config.hpp>

namespace boost {

namespace BOOST_TEST_UTILS_RUNTIME_PARAM_NAMESPACE {

namespace environment {

template<typename T>
class variable;

class variable_base;
variable_base var( cstring var_name );

template<typename T>
inline variable<T>
  var( cstring var_name );

namespace rt_env_detail {

struct variable_data;

variable_data&  new_var_record( cstring var_name );
variable_data*  find_var_record( cstring var_name );

cstring         sys_read_var( cstring var_name );
void            sys_write_var( cstring var_name, format_stream& var_value );

}

template <typename T> class variable;

} // namespace environment

} // namespace BOOST_TEST_UTILS_RUNTIME_PARAM_NAMESPACE

} // namespace boost

#endif // BOOST_TEST_UTILS_RUNTIME_ENV_FWD_HPP