1 // Copyright Daniel Wallin 2008. Use, modification and distribution is
2 // subject to the Boost Software License, Version 1.0. (See accompanying
3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
4
5 #ifndef LUABIND_COPY_POLICY_081021_HPP
6 # define LUABIND_COPY_POLICY_081021_HPP
7
8 # include <luabind/detail/policy.hpp>
9
10 namespace luabind {
11
12 namespace detail
13 {
14
15 struct copy_converter
16 {
17 template <class T>
applyluabind::detail::copy_converter18 void apply(lua_State* L, T const& x)
19 {
20 value_converter().apply(L, x);
21 }
22
23 template <class T>
applyluabind::detail::copy_converter24 void apply(lua_State* L, T* x)
25 {
26 if (!x)
27 lua_pushnil(L);
28 else
29 apply(L, *x);
30 }
31 };
32
33 template <int N>
34 struct copy_policy : conversion_policy<N>
35 {
precallluabind::detail::copy_policy36 static void precall(lua_State*, index_map const&)
37 {}
38
postcallluabind::detail::copy_policy39 static void postcall(lua_State*, index_map const&)
40 {}
41
42 template <class T, class Direction>
43 struct apply
44 {
45 typedef copy_converter type;
46 };
47 };
48
49 } // namespace detail
50
51 template <int N>
52 detail::policy_cons<detail::copy_policy<N>, detail::null_type>
copy(LUABIND_PLACEHOLDER_ARG (N))53 copy(LUABIND_PLACEHOLDER_ARG(N))
54 {
55 return detail::policy_cons<detail::copy_policy<N>, detail::null_type>();
56 }
57
58 } // namespace luabind
59
60 #endif // LUABIND_COPY_POLICY_081021_HPP
61