/usr/include/luabind/handle.hpp is in libluabind-dev 0.9.1+dfsg-8.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | // Copyright (c) 2005 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_HANDLE_050420_HPP
#define LUABIND_HANDLE_050420_HPP
#include <luabind/lua_include.hpp>
#include <luabind/value_wrapper.hpp>
namespace luabind {
// A reference to a Lua value. Represents an entry in the
// registry table.
class handle
{
public:
handle();
handle(lua_State* interpreter, int stack_index);
handle(lua_State* main, lua_State* interpreter, int stack_index);
handle(handle const& other);
~handle();
handle& operator=(handle const& other);
void swap(handle& other);
void push(lua_State* interpreter) const;
lua_State* interpreter() const;
void replace(lua_State* interpreter, int stack_index);
private:
lua_State* m_interpreter;
int m_index;
};
inline handle::handle()
: m_interpreter(0)
, m_index(LUA_NOREF)
{}
inline handle::handle(handle const& other)
: m_interpreter(other.m_interpreter)
, m_index(LUA_NOREF)
{
if (m_interpreter == 0) return;
lua_rawgeti(m_interpreter, LUA_REGISTRYINDEX, other.m_index);
m_index = luaL_ref(m_interpreter, LUA_REGISTRYINDEX);
}
inline handle::handle(lua_State* interpreter, int stack_index)
: m_interpreter(interpreter)
, m_index(LUA_NOREF)
{
lua_pushvalue(interpreter, stack_index);
m_index = luaL_ref(interpreter, LUA_REGISTRYINDEX);
}
inline handle::handle(lua_State* main, lua_State* interpreter, int stack_index)
: m_interpreter(main)
, m_index(LUA_NOREF)
{
lua_pushvalue(interpreter, stack_index);
m_index = luaL_ref(interpreter, LUA_REGISTRYINDEX);
}
inline handle::~handle()
{
if (m_interpreter && m_index != LUA_NOREF)
luaL_unref(m_interpreter, LUA_REGISTRYINDEX, m_index);
}
inline handle& handle::operator=(handle const& other)
{
handle(other).swap(*this);
return *this;
}
inline void handle::swap(handle& other)
{
std::swap(m_interpreter, other.m_interpreter);
std::swap(m_index, other.m_index);
}
inline void handle::push(lua_State* interpreter) const
{
lua_rawgeti(interpreter, LUA_REGISTRYINDEX, m_index);
}
inline lua_State* handle::interpreter() const
{
return m_interpreter;
}
inline void handle::replace(lua_State* interpreter, int stack_index)
{
lua_pushvalue(interpreter, stack_index);
lua_rawseti(interpreter, LUA_REGISTRYINDEX, m_index);
}
template<>
struct value_wrapper_traits<handle>
{
typedef boost::mpl::true_ is_specialized;
static lua_State* interpreter(handle const& value)
{
return value.interpreter();
}
static void unwrap(lua_State* interpreter, handle const& value)
{
value.push(interpreter);
}
static bool check(...)
{
return true;
}
};
} // namespace luabind
#endif // LUABIND_HANDLE_050420_HPP
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