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/repetition/enum_trailing_params.hpp>
  34 #include <boost/preprocessor/repeat.hpp>
  35 #include <vector>
  36
  37 #include <luabind/detail/overload_rep_base.hpp>
  38
  39 #include <luabind/detail/is_indirect_const.hpp>
  40
  41 #ifndef BOOST_MSVC
  42 #include <luabind/detail/policy.hpp>
  43 #endif
  44
  45 namespace luabind { namespace detail
  46 {
  47         struct dummy_ {};
  48
  49         // this class represents a specific overload of a member-function.
  50         struct overload_rep: public overload_rep_base
  51         {
  52                 #define BOOST_PP_ITERATION_PARAMS_1 (4 \
  53                         , (0, LUABIND_MAX_ARITY, <luabind/detail/overload_rep.hpp>, 1))
  54                 #include BOOST_PP_ITERATE()
  55
  56                 bool operator==(const overload_rep& o)
  57                 {
  58                         if (o.m_const != m_const) return false;
  59                         if (o.m_arity != m_arity) return false;
  60                         if (o.m_params_.size() != m_params_.size()) return false;
  61                         for (int i = 0; i < (int)m_params_.size(); ++i)
  62                         {
  63                                 if (!(LUABIND_TYPE_INFO_EQUAL(m_params_[i], o.m_params_[i])))
  64                                         return false;
  65                         }
  66                         return true;
  67                 }
  68
  69                 void set_fun(boost::function1<int, lua_State*> const& f)
  70                 { call_fun = f; }
  71
  72                 void set_fun_static(boost::function1<int, lua_State*> const& f)
  73                 { call_fun_static = f; }
  74
  75                 int call(lua_State* L, bool force_static_call) const;
  76
  77                 bool has_static() const { return !call_fun_static.empty(); }
  78
  79         private:
  80
  81                 // this is the normal function pointer that may be a virtual
  82                 boost::function1<int, lua_State*> call_fun;
  83
  84                 // this is the optional function pointer that is only set if
  85                 // the first function pointer is virtual. This must always point
  86                 // to a static function.
  87                 boost::function1<int, lua_State*> call_fun_static;
  88
  89                 // the types of the parameter it takes
  90                 std::vector<LUABIND_TYPE_INFO> m_params_;
  91                 // is true if the overload is const (this is a part of the signature)
  92                 bool m_const;
  93         };
  94
  95 }} // namespace luabind::detail
  96
  97 #endif // LUABIND_OVERLOAD_REP_HPP_INCLUDED
  98
  99 #elif BOOST_PP_ITERATION_FLAGS() == 1
 100
 101 #define LUABIND_PARAM(z, n, _) m_params_.push_back(LUABIND_TYPEID(A##n));
 102 #define LUABIND_POLICY_DECL(z,n,offset) typedef typename detail::find_conversion_policy<n + offset, Policies>::type BOOST_PP_CAT(p,n);
 103 #define LUABIND_ARITY(z,n,text) + BOOST_PP_CAT(p,n)::has_arg
 104
 105                 // overloaded template funtion that initializes the parameter list
 106                 // called m_params and the m_arity member.
 107                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 108                 overload_rep(R(T::*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 109             : m_const(false)
 110                 {
 111                         m_params_.reserve(BOOST_PP_ITERATION());
 112                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 113                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, 2)
 114                         m_arity = 1 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 115                 }
 116
 117                 template<class R, class T BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 118                 overload_rep(R(T::*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)) const, Policies*)
 119             : m_const(true)
 120                 {
 121                         m_params_.reserve(BOOST_PP_ITERATION());
 122                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 123                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, 2)
 124                         m_arity = 1 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 125                 }
 126
 127                 template<class R BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), class A), class Policies>
 128                 overload_rep(R(*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), A)), Policies*)
 129             : m_const(false/*is_indirect_const<T>::value*/)
 130                 {
 131                         m_params_.reserve(BOOST_PP_ITERATION());
 132                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_PARAM, _)
 133                         BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_POLICY_DECL, 1)
 134                         m_arity = 0 BOOST_PP_REPEAT(BOOST_PP_ITERATION(), LUABIND_ARITY, 0);
 135                 }
 136
 137 #undef LUABIND_ARITY
 138 #undef LUABIND_POLICY_DECL
 139 #undef LUABIND_PARAM
 140
 141 #endif