luabind/raw_policy.hpp

   1 // Copyright (c) 2003 Daniel Wallin and Arvid Norberg
   2
   3 // Permission is hereby granted, free of charge, to any person obtaining a
   4 // copy of this software and associated documentation files (the "Software"),
   5 // to deal in the Software without restriction, including without limitation
   6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7 // and/or sell copies of the Software, and to permit persons to whom the
   8 // Software is furnished to do so, subject to the following conditions:
   9
  10 // The above copyright notice and this permission notice shall be included
  11 // in all copies or substantial portions of the Software.
  12
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
  14 // ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  15 // TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16 // PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
  17 // SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  18 // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  19 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
  21 // OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23
  24 #ifndef LUABIND_RAW_POLICY_HPP_INCLUDED
  25 #define LUABIND_RAW_POLICY_HPP_INCLUDED
  26
  27 #include <luabind/config.hpp>
  28 #include <luabind/detail/policy.hpp>
  29
  30 namespace luabind { namespace detail  {
  31
  32         struct raw_converter
  33         {
  34                 lua_State* apply(lua_State* L, by_pointer<lua_State>, int)
  35                 {
  36                         return L;
  37                 }
  38
  39                 static int match(...)
  40                 {
  41                         return 0;
  42                 }
  43
  44                 void converter_postcall(lua_State*, by_pointer<lua_State>, int) {}
  45         };
  46
  47         template<int N>
  48         struct raw_policy : conversion_policy<N, false>
  49         {
  50                 static void precall(lua_State*, const index_map&) {}
  51                 static void postcall(lua_State*, const index_map&) {}
  52
  53                 template<class T, class Direction>
  54                 struct apply
  55                 {
  56                         typedef raw_converter type;
  57                 };
  58         };
  59
  60 }} // namespace luabind::detail
  61
  62 namespace luabind {
  63
  64         template<int N>
  65         detail::policy_cons<
  66                 detail::raw_policy<N>
  67           , detail::null_type
  68         >
  69         inline raw(LUABIND_PLACEHOLDER_ARG(N))
  70         {
  71                 return detail::policy_cons<
  72                         detail::raw_policy<N>
  73                   , detail::null_type
  74                 >();
  75         }
  76
  77 } // namespace luabind
  78
  79 #endif // LUABIND_RAW_POLICY_HPP_INCLUDED
  80