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// 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.
#if !BOOST_PP_IS_ITERATING
#ifndef LUABIND_CALL_FUNCTION_HPP_INCLUDED
#define LUABIND_CALL_FUNCTION_HPP_INCLUDED
#include <luabind/config.hpp>
#include <boost/mpl/if.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/mpl/or.hpp>
#ifndef LUABIND_CPP0x
# include <boost/preprocessor/repeat.hpp>
# include <boost/preprocessor/iteration/iterate.hpp>
# include <boost/preprocessor/repetition/enum.hpp>
# include <boost/preprocessor/repetition/enum_params.hpp>
# include <boost/preprocessor/repetition/enum_binary_params.hpp>
# include <boost/preprocessor/punctuation/comma_if.hpp>
#endif
#include <luabind/error.hpp>
#include <luabind/detail/convert_to_lua.hpp>
#include <luabind/detail/pcall.hpp>
namespace luabind
{
namespace detail
{
// if the proxy_function_caller returns non-void
template<class Ret, class Tuple>
class proxy_function_caller
{
// friend class luabind::object;
public:
typedef int(*function_t)(lua_State*, int, int);
proxy_function_caller(
lua_State* L
, int params
, function_t fun
, const Tuple args)
: m_state(L)
, m_params(params)
, m_fun(fun)
, m_args(args)
, m_called(false)
{
}
proxy_function_caller(const proxy_function_caller& rhs)
: m_state(rhs.m_state)
, m_params(rhs.m_params)
, m_fun(rhs.m_fun)
, m_args(rhs.m_args)
, m_called(rhs.m_called)
{
rhs.m_called = true;
}
~proxy_function_caller()
{
if (m_called) return;
m_called = true;
lua_State* L = m_state;
int top = lua_gettop(L);
push_args_from_tuple<1>::apply(L, m_args);
# ifdef LUABIND_CPP0x
if (m_fun(L, std::tuple_size<Tuple>::value, 0))
# else
if (m_fun(L, boost::tuples::length<Tuple>::value, 0))
# endif
{
assert(lua_gettop(L) == top - m_params + 1);
#ifndef LUABIND_NO_EXCEPTIONS
throw luabind::error(L);
#else
error_callback_fun e = get_error_callback();
if (e) e(L);
assert(0 && "the lua function threw an error and exceptions are disabled."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
// pops the return values from the function call
stack_pop pop(L, lua_gettop(L) - top + m_params);
}
operator Ret()
{
typename mpl::apply_wrap2<default_policy,Ret,lua_to_cpp>::type converter;
m_called = true;
lua_State* L = m_state;
int top = lua_gettop(L);
push_args_from_tuple<1>::apply(L, m_args);
# ifdef LUABIND_CPP0x
if (m_fun(L, std::tuple_size<Tuple>::value, 1))
# else
if (m_fun(L, boost::tuples::length<Tuple>::value, 1))
# endif
{
assert(lua_gettop(L) == top - m_params + 1);
#ifndef LUABIND_NO_EXCEPTIONS
throw luabind::error(L);
#else
error_callback_fun e = get_error_callback();
if (e) e(L);
assert(0 && "the lua function threw an error and exceptions are disabled."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
// pops the return values from the function call
stack_pop pop(L, lua_gettop(L) - top + m_params);
if (converter.match(L, LUABIND_DECORATE_TYPE(Ret), -1) < 0)
{
#ifndef LUABIND_NO_EXCEPTIONS
throw cast_failed(L, typeid(Ret));
#else
cast_failed_callback_fun e = get_cast_failed_callback();
if (e) e(L, typeid(Ret));
assert(0 && "the lua function's return value could not be converted."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
return converter.apply(L, LUABIND_DECORATE_TYPE(Ret), -1);
}
template<class Policies>
Ret operator[](const Policies& p)
{
typedef typename detail::find_conversion_policy<0, Policies>::type converter_policy;
typename mpl::apply_wrap2<converter_policy,Ret,lua_to_cpp>::type converter;
m_called = true;
lua_State* L = m_state;
int top = lua_gettop(L);
detail::push_args_from_tuple<1>::apply(L, m_args, p);
# ifdef LUABIND_CPP0x
if (m_fun(L, std::tuple_size<Tuple>::value, 1))
# else
if (m_fun(L, boost::tuples::length<Tuple>::value, 1))
# endif
{
assert(lua_gettop(L) == top - m_params + 1);
#ifndef LUABIND_NO_EXCEPTIONS
throw error(L);
#else
error_callback_fun e = get_error_callback();
if (e) e(L);
assert(0 && "the lua function threw an error and exceptions are disabled."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
// pops the return values from the function call
stack_pop pop(L, lua_gettop(L) - top + m_params);
if (converter.match(L, LUABIND_DECORATE_TYPE(Ret), -1) < 0)
{
#ifndef LUABIND_NO_EXCEPTIONS
throw cast_failed(L, typeid(Ret));
#else
cast_failed_callback_fun e = get_cast_failed_callback();
if (e) e(L, typeid(Ret));
assert(0 && "the lua function's return value could not be converted."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
return converter.apply(L, LUABIND_DECORATE_TYPE(Ret), -1);
}
private:
lua_State* m_state;
int m_params;
function_t m_fun;
Tuple m_args;
mutable bool m_called;
};
// if the proxy_member_caller returns void
template<class Tuple>
class proxy_function_void_caller
{
public:
typedef int(*function_t)(lua_State*, int, int);
proxy_function_void_caller(
lua_State* L
, int params
, function_t fun
, const Tuple args)
: m_state(L)
, m_params(params)
, m_fun(fun)
, m_args(args)
, m_called(false)
{
}
proxy_function_void_caller(const proxy_function_void_caller& rhs)
: m_state(rhs.m_state)
, m_params(rhs.m_params)
, m_fun(rhs.m_fun)
, m_args(rhs.m_args)
, m_called(rhs.m_called)
{
rhs.m_called = true;
}
~proxy_function_void_caller()
{
if (m_called) return;
m_called = true;
lua_State* L = m_state;
int top = lua_gettop(L);
push_args_from_tuple<1>::apply(L, m_args);
# ifdef LUABIND_CPP0x
if (m_fun(L, std::tuple_size<Tuple>::value, 0))
# else
if (m_fun(L, boost::tuples::length<Tuple>::value, 0))
# endif
{
assert(lua_gettop(L) == top - m_params + 1);
#ifndef LUABIND_NO_EXCEPTIONS
throw luabind::error(L);
#else
error_callback_fun e = get_error_callback();
if (e) e(L);
assert(0 && "the lua function threw an error and exceptions are disabled."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
// pops the return values from the function call
stack_pop pop(L, lua_gettop(L) - top + m_params);
}
template<class Policies>
void operator[](const Policies& p)
{
m_called = true;
lua_State* L = m_state;
int top = lua_gettop(L);
detail::push_args_from_tuple<1>::apply(L, m_args, p);
# ifdef LUABIND_CPP0x
if (m_fun(L, std::tuple_size<Tuple>::value, 0))
# else
if (m_fun(L, boost::tuples::length<Tuple>::value, 0))
# endif
{
assert(lua_gettop(L) == top - m_params + 1);
#ifndef LUABIND_NO_EXCEPTIONS
throw error(L);
#else
error_callback_fun e = get_error_callback();
if (e) e(L);
assert(0 && "the lua function threw an error and exceptions are disabled."
" If you want to handle the error you can use luabind::set_error_callback()");
std::terminate();
#endif
}
// pops the return values from the function call
stack_pop pop(L, lua_gettop(L) - top + m_params);
}
private:
lua_State* m_state;
int m_params;
function_t m_fun;
Tuple m_args;
mutable bool m_called;
};
}
# ifdef LUABIND_CPP0x
namespace detail
{
template <class R, class... Args>
struct make_proxy
{
typedef proxy_function_caller<R, std::tuple<Args const*...> > type;
};
template <class... Args>
struct make_proxy<void, Args...>
{
typedef proxy_function_void_caller<std::tuple<Args const*...> > type;
};
} // namespace detail
template <class R, class... Args>
typename detail::make_proxy<R, Args...>::type call_function(
lua_State* L, char const* name, Args const&... args)
{
assert(name && "luabind::call_function() expects a function name");
lua_pushstring(L, name);
lua_gettable(L, LUA_GLOBALSINDEX);
typedef typename detail::make_proxy<R, Args...>::type proxy_type;
return proxy_type(L, 1, &detail::pcall, std::tuple<Args const*...>(&args...));
}
template <class R, class... Args>
typename detail::make_proxy<R, Args...>::type call_function(
object const& obj, Args const&... args)
{
obj.push(obj.interpreter());
typedef typename detail::make_proxy<R, Args...>::type proxy_type;
return proxy_type(
obj.interpreter(), 1, &detail::pcall, std::tuple<Args const*...>(&args...));
}
template <class R, class... Args>
typename detail::make_proxy<R, Args...>::type resume_function(
lua_State* L, char const* name, Args const&... args)
{
assert(name && "luabind::call_function() expects a function name");
lua_pushstring(L, name);
lua_gettable(L, LUA_GLOBALSINDEX);
typedef typename detail::make_proxy<R, Args...>::type proxy_type;
return proxy_type(L, 1, &detail::resume_impl, std::tuple<Args const*...>(&args...));
}
template <class R, class... Args>
typename detail::make_proxy<R, Args...>::type resume_function(
object const& obj, Args const&... args)
{
obj.push(obj.interpreter());
typedef typename detail::make_proxy<R, Args...>::type proxy_type;
return proxy_type(
obj.interpreter(), 1, &detail::resume_impl, std::tuple<Args const*...>(&args...));
}
template <class R, class... Args>
typename detail::make_proxy<R, Args...>::type resume(
lua_State* L, Args const&... args)
{
typedef typename detail::make_proxy<R, Args...>::type proxy_type;
return proxy_type(
L, 0, &detail::resume_impl, std::tuple<Args const*...>(&args...));
}
# else // LUABIND_CPP0x
#define BOOST_PP_ITERATION_PARAMS_1 (4, (0, LUABIND_MAX_ARITY, <luabind/detail/call_function.hpp>, 1))
#include BOOST_PP_ITERATE()
# endif // LUABIND_CPP0x
}
#endif // LUABIND_CALL_FUNCTION_HPP_INCLUDED
#elif BOOST_PP_ITERATION_FLAGS() == 1
#define LUABIND_TUPLE_PARAMS(z, n, data) const A##n *
#define LUABIND_OPERATOR_PARAMS(z, n, data) const A##n & a##n
template<class Ret BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
call_function(lua_State* L, const char* name BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _) )
{
assert(name && "luabind::call_function() expects a function name");
typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
#if BOOST_PP_ITERATION() == 0
tuple_t args;
#else
tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
#endif
typedef typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
lua_pushstring(L, name);
lua_gettable(L, LUA_GLOBALSINDEX);
return proxy_type(L, 1, &detail::pcall, args);
}
template<class Ret BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
call_function(luabind::object const& obj BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _) )
{
typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
#if BOOST_PP_ITERATION() == 0
tuple_t args;
#else
tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
#endif
typedef typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
obj.push(obj.interpreter());
return proxy_type(obj.interpreter(), 1, &detail::pcall, args);
}
template<class Ret BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
resume_function(lua_State* L, const char* name BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _) )
{
assert(name && "luabind::resume_function() expects a function name");
typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
#if BOOST_PP_ITERATION() == 0
tuple_t args;
#else
tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
#endif
typedef typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
lua_pushstring(L, name);
lua_gettable(L, LUA_GLOBALSINDEX);
return proxy_type(L, 1, &detail::resume_impl, args);
}
template<class Ret BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
resume_function(luabind::object const& obj BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _) )
{
typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
#if BOOST_PP_ITERATION() == 0
tuple_t args;
#else
tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
#endif
typedef typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
obj.push(obj.interpreter());
return proxy_type(obj.interpreter(), 1, &detail::resume_impl, args);
}
template<class Ret BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
resume(lua_State* L BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _) )
{
typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
#if BOOST_PP_ITERATION() == 0
tuple_t args;
#else
tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
#endif
typedef typename boost::mpl::if_<boost::is_void<Ret>
, luabind::detail::proxy_function_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
, luabind::detail::proxy_function_caller<Ret, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
return proxy_type(L, 0, &detail::resume_impl, args);
}
#undef LUABIND_OPERATOR_PARAMS
#undef LUABIND_TUPLE_PARAMS
#endif