luabind/detail/overload_rep.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 #if !BOOST_PP_IS_ITERATING
  25
  26 #ifndef LUABIND_OVERLOAD_REP_HPP_INCLUDED
  27 #define LUABIND_OVERLOAD_REP_HPP_INCLUDED
  28
  29 #include <luabind/config.hpp>
  30
  31 #include <boost/preprocessor/enum_params.hpp>
  32 #include <boost/preprocessor/iteration/iterate.hpp>
  33 #include <boost/preprocessor/repeat.hpp>
  34
  35 #include <luabind/detail/overload_rep_base.hpp>
  36
  37 #include <luabind/detail/class_rep.hpp>
  38 #include <luabind/detail/is_indirect_const.hpp>
  39
  40 namespace luabind { namespace detail
  41 {
  42         struct dummy_ {};
  43
  44         // this class represents a specific overload of a member-function.
  45         struct overload_rep: public overload_rep_base
  46         {
  47                 #define BOOST_PP_ITERATION_PARAMS_1 (4, (0, LUABIND_MAX_ARITY, <luabind/detail/overload_rep.hpp>, 1))
  48                 #include BOOST_PP_ITERATE()
  49
  50                 bool operator==(const overload_rep& o)
  51                 {
  52                         if (o.m_const != m_const) return false;
  53                         if (o.m_arity != m_arity) return false;
  54                         if (o.m_num_args != m_num_args) return false;
  55                         for (int i = 0; i < m_num_args; ++i)
  56                                 if (!(LUABIND_TYPE_INFO_EQUAL(m_params[i], o.m_params[i]))) return false;
  57                         return true;
  58                 }
  59
  60 //              inline int match(lua_State* L, int num_params) const { if (num_params != m_arity) return -1; return m_match_fun(L); }
  61
  62                 void add_offset(int offset) throw() { m_pointer_offset += offset; }
  63                 int offset() const throw() { return m_pointer_offset; }
  64
  65                 inline void set_fun(boost::function2<int,lua_State*,void*>& f) { call_fun = f; }
  66                 inline int call(lua_State* L, const object_rep& o) const;
  67
  68                 boost::function2<int,lua_State*,void*> call_fun;
  69
  70         private:
  71
  72                 // the offset we need to apply to the object pointer when calling this method.
  73                 // it depends on which class_rep this method is found in
  74                 int m_pointer_offset;
  75
  76                 // the number of parameters this overload takes
  77                 // these are used to detect when a method is overridden by a derived class.
  78 //              int m_arity;
  79                 int m_num_args;
  80                 // the types of the parameter it takes
  81                 LUABIND_TYPE_INFO m_params[LUABIND_MAX_ARITY];
  82                 // is true if the overload is const (this is a part of the signature)
  83                 bool m_const;
  84         };
  85
  86 }} // namespace luabind::detail
  87
  88 #endif // LUABIND_OVERLOAD_REP_HPP_INCLUDED
  89
  90 #elif BOOST_PP_ITERATION_FLAGS() == 1
  91
  92 #define LUABIND_PARAM(z, n, _) m_params[n] =LUABIND_TYPEID(A##n);
  93 #define LUABIND_POLICY_DECL(z,n,text) typedef typename find_conversion_policy<n + 1, Policies>::type BOOST_PP_CAT(p,n);
  94 #define LUABIND_ARITY(z,n,text) + BOOST_PP_CAT(p,n)::has_arg
  95
  96                 // overloaded template funtion that initializes the parameter list
  97                 // called m_params and the m_arity member.
  98                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
  99                 overload_rep(R(T::*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 100                         : m_pointer_offset(0)
 101                         , m_num_args(BOOST_PP_ITERATION())
 102                         , m_const(false)
 103                 {
 104                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 105                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 106                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 107                 }
 108
 109                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 110                 overload_rep(R(T::*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)) const, Policies*)
 111                         : m_pointer_offset(0)
 112                         , m_num_args(BOOST_PP_ITERATION())
 113                         , m_const(true)
 114                 {
 115                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 116                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 117                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 118                 }
 119
 120                 // non-member functions
 121 /*
 122                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 123                 overload_rep(R(*)(T* BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 124                         : m_pointer_offset(0)
 125                         , m_num_args(BOOST_PP_ITERATION())
 126                         , m_const(false)
 127                 {
 128                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 129                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 130                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 131                 }
 132
 133                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 134                 overload_rep(R(*)(const T* BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 135                         : m_pointer_offset(0)
 136                         , m_num_args(BOOST_PP_ITERATION())
 137                         , m_const(true)
 138                 {
 139                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 140                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 141                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 142                 }
 143
 144                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 145                 overload_rep(R(*)(T& BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 146                         : m_pointer_offset(0)
 147                         , m_num_args(BOOST_PP_ITERATION())
 148                         , m_const(false)
 149                 {
 150                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _);
 151                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 152                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 153                 }
 154
 155                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 156                 overload_rep(R(*)(const T& BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 157                         : m_pointer_offset(0)
 158                         , m_num_args(BOOST_PP_ITERATION())
 159                         , m_const(true)
 160                 {
 161                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 162                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 163                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 164                 }
 165 */
 166
 167                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 168                 overload_rep(R(*)(T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 169                         : m_pointer_offset(0)
 170                         , m_num_args(BOOST_PP_ITERATION())
 171                         , m_const(is_indirect_const<T>::value)
 172                 {
 173                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 174                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, _)
 175                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 176                 }
 177
 178 #undef LUABIND_PARAM
 179
 180 #endif