/usr/include/luabind/return_reference_to_policy.hpp is in libluabind-dev 0.9.1+dfsg-11.
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 | // 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
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#ifndef LUABIND_RETURN_REFERENCE_TO_POLICY_HPP_INCLUDED
#define LUABIND_RETURN_REFERENCE_TO_POLICY_HPP_INCLUDED
namespace luabind { namespace detail
{
template<class T>
struct return_reference_to_converter;
template<>
struct return_reference_to_converter<cpp_to_lua>
{
template<class T>
void apply(lua_State* L, const T&)
{
lua_pushnil(L);
}
};
template<int N>
struct return_reference_to_policy : conversion_policy<0>
{
static void precall(lua_State*, const index_map&) {}
static void postcall(lua_State* L, const index_map& indices)
{
int result_index = indices[0];
int ref_to_index = indices[N];
lua_pushvalue(L, ref_to_index);
lua_replace(L, result_index);
}
template<class T, class Direction>
struct apply
{
typedef return_reference_to_converter<Direction> type;
};
};
}}
namespace luabind
{
template<int N>
detail::policy_cons<detail::return_reference_to_policy<N>, detail::null_type>
return_reference_to(LUABIND_PLACEHOLDER_ARG(N))
{
return detail::policy_cons<detail::return_reference_to_policy<N>, detail::null_type>();
}
}
#endif // LUABIND_RETURN_REFERENCE_TO_POLICY_HPP_INCLUDED
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