/usr/include/luabind/adopt_policy.hpp is in libluabind-dev 0.9.1+dfsg-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | // Copyright (c) 2003 Daniel Wallin and Arvid Norberg
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef LUABIND_ADOPT_POLICY_HPP_INCLUDED
#define LUABIND_ADOPT_POLICY_HPP_INCLUDED
#include <luabind/config.hpp>
#include <luabind/wrapper_base.hpp>
#include <luabind/detail/policy.hpp>
#include <luabind/back_reference_fwd.hpp>
#include <luabind/wrapper_base.hpp>
#include <boost/type_traits/is_polymorphic.hpp>
namespace luabind { namespace detail
{
template <class T>
void adjust_backref_ownership(T* ptr, mpl::true_)
{
if (wrap_base* p = dynamic_cast<wrap_base*>(ptr))
{
wrapped_self_t& wrapper = wrap_access::ref(*p);
wrapper.get(wrapper.state());
wrapper.m_strong_ref.set(wrapper.state());
}
}
inline void adjust_backref_ownership(void*, mpl::false_)
{}
template<class Direction = lua_to_cpp>
struct adopt_pointer : pointer_converter
{
typedef adopt_pointer type;
int const consumed_args(...)
{
return 1;
}
template<class T>
T* apply(lua_State* L, by_pointer<T>, int index)
{
T* ptr = pointer_converter::apply(
L, LUABIND_DECORATE_TYPE(T*), index);
object_rep* obj = static_cast<object_rep*>(
lua_touserdata(L, index));
obj->release();
adjust_backref_ownership(ptr, boost::is_polymorphic<T>());
return ptr;
}
template<class T>
int match(lua_State* L, by_pointer<T>, int index)
{
return pointer_converter::match(
L, LUABIND_DECORATE_TYPE(T*), index);
}
template<class T>
void converter_postcall(lua_State*, T, int) {}
};
template<>
struct adopt_pointer<cpp_to_lua>
{
typedef adopt_pointer type;
template<class T>
void apply(lua_State* L, T* ptr)
{
if (ptr == 0)
{
lua_pushnil(L);
return;
}
// if there is a back_reference, then the
// ownership will be removed from the
// back reference and put on the lua stack.
if (luabind::move_back_reference(L, ptr))
return;
make_instance(L, std::auto_ptr<T>(ptr));
}
};
template<int N>
// struct adopt_policy : converter_policy_tag
struct adopt_policy : conversion_policy<N>
{
// BOOST_STATIC_CONSTANT(int, index = N);
static void precall(lua_State*, const index_map&) {}
static void postcall(lua_State*, const index_map&) {}
struct only_accepts_nonconst_pointers {};
template<class T, class Direction>
struct apply
{
typedef luabind::detail::is_nonconst_pointer<T> is_nonconst_p;
typedef typename boost::mpl::if_<is_nonconst_p, adopt_pointer<Direction>, only_accepts_nonconst_pointers>::type type;
};
};
}}
namespace luabind
{
template<int N>
detail::policy_cons<detail::adopt_policy<N>, detail::null_type>
adopt(LUABIND_PLACEHOLDER_ARG(N))
{
return detail::policy_cons<detail::adopt_policy<N>, detail::null_type>();
}
}
#endif // LUABIND_ADOPT_POLICY_HPP_INCLUDE
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