luabind/detail/class_registry.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_CLASS_REGISTRY_HPP_INCLUDED
  25 #define LUABIND_CLASS_REGISTRY_HPP_INCLUDED
  26
  27 #include <typeinfo>
  28 #include <map>
  29
  30 #include <luabind/config.hpp>
  31 #include <luabind/open.hpp>
  32
  33 namespace luabind { namespace detail
  34 {
  35         class class_rep;
  36
  37         struct LUABIND_API class_registry
  38         {
  39                 class_registry(lua_State* L);
  40
  41                 static class_registry* get_registry(lua_State* L);
  42
  43                 int cpp_instance() const { return m_cpp_instance_metatable; }
  44                 int cpp_class() const { return m_cpp_class_metatable; }
  45
  46                 int lua_instance() const { return m_lua_instance_metatable; }
  47                 int lua_class() const { return m_lua_class_metatable; }
  48                 int lua_function() const { return m_lua_function_metatable; }
  49
  50                 void add_class(LUABIND_TYPE_INFO info, class_rep* crep);
  51
  52                 struct cmp
  53                 {
  54                         bool operator()(const std::type_info* a, const std::type_info* b) const
  55                         {
  56                                 return a->before(*b) != 0;
  57                         }
  58
  59                         template<class T>
  60                         bool operator()(const T& a, const T& b) const
  61                         {
  62                                 return a < b;
  63                         }
  64                 };
  65
  66                 class_rep* find_class(LUABIND_TYPE_INFO info) const;
  67
  68         private:
  69
  70                 std::map<LUABIND_TYPE_INFO, class_rep*, cmp> m_classes;
  71
  72                 // this is a lua reference that points to the lua table
  73                 // that is to be used as meta table for all C++ class
  74                 // instances. It is a kind of v-table.
  75                 int m_cpp_instance_metatable;
  76
  77                 // this is a lua reference to the metatable to be used
  78                 // for all classes defined in C++.
  79                 int m_cpp_class_metatable;
  80
  81                 // this is a lua reference that points to the lua table
  82                 // that is to be used as meta table for all lua class
  83                 // instances. It is a kind of v-table.
  84                 int m_lua_instance_metatable;
  85
  86                 // this is a lua reference to the metatable to be used
  87                 // for all classes defined in lua
  88                 int m_lua_class_metatable;
  89
  90                 // this metatable only contains a destructor
  91                 // for luabind::Detail::free_functions::function_rep
  92                 int m_lua_function_metatable;
  93
  94         };
  95
  96 }}
  97
  98 #endif // LUABIND_CLASS_REGISTRY_HPP_INCLUDED
  99