Jeff Thompson | ef2d5a4 | 2013-08-22 19:09:24 -0700 | [diff] [blame] | 1 | // (C) Copyright Gennadiy Rozental 2005-2008. |
| 2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 4 | // http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | // See http://www.boost.org/libs/test for the library home page. |
| 7 | // |
| 8 | // File : $RCSfile$ |
| 9 | // |
| 10 | // Version : $Revision: 54633 $ |
| 11 | // |
| 12 | // Description : defines and implements inline model of program environment |
| 13 | // *************************************************************************** |
| 14 | |
| 15 | #ifndef BOOST_RT_ENV_ENVIRONMENT_HPP_062604GER |
| 16 | #define BOOST_RT_ENV_ENVIRONMENT_HPP_062604GER |
| 17 | |
| 18 | #ifdef UNDER_CE |
| 19 | #error Windows CE does not support environment variables. |
| 20 | #endif |
| 21 | |
| 22 | // Boost.Runtime.Parameter |
| 23 | #include <ndnboost/test/utils/runtime/config.hpp> |
| 24 | #include <ndnboost/test/utils/runtime/fwd.hpp> |
| 25 | #include <ndnboost/test/utils/runtime/argument.hpp> |
| 26 | #include <ndnboost/test/utils/runtime/interpret_argument_value.hpp> |
| 27 | |
| 28 | #include <ndnboost/test/utils/runtime/env/fwd.hpp> |
| 29 | #include <ndnboost/test/utils/runtime/env/modifier.hpp> |
| 30 | #include <ndnboost/test/utils/runtime/env/variable.hpp> |
| 31 | |
| 32 | // Boost.Test |
| 33 | #include <ndnboost/test/utils/callback.hpp> |
| 34 | |
| 35 | // Boost |
| 36 | #include <ndnboost/optional.hpp> |
| 37 | |
| 38 | namespace ndnboost { |
| 39 | |
| 40 | namespace BOOST_RT_PARAM_NAMESPACE { |
| 41 | |
| 42 | // ************************************************************************** // |
| 43 | // ************** runtime::environment implementation ************** // |
| 44 | // ************************************************************************** // |
| 45 | |
| 46 | namespace environment { |
| 47 | |
| 48 | namespace rt_env_detail { |
| 49 | |
| 50 | template<typename T, typename Modifiers> |
| 51 | variable_data& |
| 52 | init_new_var( cstring var_name, Modifiers m = nfp::no_params ) |
| 53 | { |
| 54 | rt_env_detail::variable_data& new_vd = new_var_record( var_name ); |
| 55 | |
| 56 | cstring str_value = sys_read_var( new_vd.m_var_name ); |
| 57 | |
| 58 | if( !str_value.is_empty() ) { |
| 59 | try { |
| 60 | ndnboost::optional<T> value; |
| 61 | |
| 62 | if( m.has( interpreter ) ) |
| 63 | m[interpreter]( str_value, value ); |
| 64 | else |
| 65 | interpret_argument_value( str_value, value, 0 ); |
| 66 | |
| 67 | if( !!value ) { |
| 68 | new_vd.m_value.reset( new typed_argument<T>( new_vd ) ); |
| 69 | |
| 70 | arg_value<T>( *new_vd.m_value ) = *value; |
| 71 | } |
| 72 | } |
| 73 | catch( ... ) { // !! could we do that |
| 74 | // !! should we report an error? |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | if( !new_vd.m_value && m.has( default_value ) ) { |
| 79 | new_vd.m_value.reset( new typed_argument<T>( new_vd ) ); |
| 80 | |
| 81 | nfp::optionally_assign( arg_value<T>( *new_vd.m_value ), m[default_value] ); |
| 82 | } |
| 83 | |
| 84 | nfp::optionally_assign( new_vd.m_global_id, m, global_id ); |
| 85 | |
| 86 | return new_vd; |
| 87 | } |
| 88 | |
| 89 | //____________________________________________________________________________// |
| 90 | |
| 91 | } // namespace rt_env_detail |
| 92 | |
| 93 | } // namespace environment |
| 94 | |
| 95 | // ************************************************************************** // |
| 96 | // ************** runtime::environment ************** // |
| 97 | // ************************************************************************** // |
| 98 | |
| 99 | namespace environment { |
| 100 | |
| 101 | // variable access |
| 102 | variable_base |
| 103 | var( cstring var_name ); |
| 104 | |
| 105 | //________________________________________________________________________// |
| 106 | |
| 107 | template<typename T> |
| 108 | inline variable<T> |
| 109 | var( cstring var_name ) |
| 110 | { |
| 111 | rt_env_detail::variable_data* vd = rt_env_detail::find_var_record( var_name ); |
| 112 | |
| 113 | return environment::variable<T>( !vd ? rt_env_detail::init_new_var<T>( var_name, nfp::no_params ) : *vd ); |
| 114 | } |
| 115 | |
| 116 | //________________________________________________________________________// |
| 117 | |
| 118 | template<typename T, typename Modifiers> |
| 119 | inline variable<T> |
| 120 | var( cstring var_name, Modifiers const& m ) |
| 121 | { |
| 122 | rt_env_detail::variable_data* vd = rt_env_detail::find_var_record( var_name ); |
| 123 | |
| 124 | return environment::variable<T>( !vd ? rt_env_detail::init_new_var<T>( var_name, m ) : *vd ); |
| 125 | } |
| 126 | |
| 127 | //________________________________________________________________________// |
| 128 | |
| 129 | // direct variable value access |
| 130 | inline cstring |
| 131 | get( cstring var_name ) |
| 132 | { |
| 133 | return environment::var<cstring>( var_name ).value(); |
| 134 | } |
| 135 | |
| 136 | //________________________________________________________________________// |
| 137 | |
| 138 | template<typename T> |
| 139 | inline T const& |
| 140 | get( cstring var_name ) |
| 141 | { |
| 142 | return environment::var<T>( var_name ).value(); |
| 143 | } |
| 144 | |
| 145 | //________________________________________________________________________// |
| 146 | |
| 147 | template<typename T> |
| 148 | inline void |
| 149 | get( cstring var_name, ndnboost::optional<T>& res ) |
| 150 | { |
| 151 | variable<T> const& v = environment::var<T>( var_name ); |
| 152 | v.value( res ); |
| 153 | } |
| 154 | |
| 155 | //________________________________________________________________________// |
| 156 | |
| 157 | } // namespace environment |
| 158 | |
| 159 | namespace env = environment; |
| 160 | |
| 161 | } // namespace BOOST_RT_PARAM_NAMESPACE |
| 162 | |
| 163 | } // namespace ndnboost |
| 164 | |
| 165 | #ifndef BOOST_RT_PARAM_OFFLINE |
| 166 | |
| 167 | #define BOOST_RT_PARAM_INLINE inline |
| 168 | #include <ndnboost/test/utils/runtime/env/environment.ipp> |
| 169 | |
| 170 | #endif |
| 171 | |
| 172 | #endif // BOOST_RT_ENV_ENVIRONMENT_HPP_062604GER |