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https://github.com/EQEmu/Server.git
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EQStream abstraction layer
This commit is contained in:
KimLS
@@ -0,0 +1,365 @@
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// Copyright (c) 2003 Daniel Wallin and Arvid Norberg
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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// OR OTHER DEALINGS IN THE SOFTWARE.
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#if !BOOST_PP_IS_ITERATING
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#ifndef LUABIND_CALL_MEMBER_HPP_INCLUDED
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#define LUABIND_CALL_MEMBER_HPP_INCLUDED
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#include <luabind/config.hpp>
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#include <luabind/detail/convert_to_lua.hpp>
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#include <luabind/detail/pcall.hpp>
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#include <luabind/error.hpp>
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#include <luabind/detail/stack_utils.hpp>
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#include <luabind/object.hpp> // TODO: REMOVE DEPENDENCY
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#include <boost/tuple/tuple.hpp>
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#include <boost/preprocessor/control/if.hpp>
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#include <boost/preprocessor/facilities/expand.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/mpl/apply_wrap.hpp>
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namespace luabind
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{
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namespace detail
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{
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namespace mpl = boost::mpl;
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// if the proxy_member_caller returns non-void
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template<class Ret, class Tuple>
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class proxy_member_caller
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{
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// friend class luabind::object;
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public:
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proxy_member_caller(lua_State* L_, const Tuple args)
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: L(L_)
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, m_args(args)
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, m_called(false)
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{
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}
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proxy_member_caller(const proxy_member_caller& rhs)
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: L(rhs.L)
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, m_args(rhs.m_args)
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, m_called(rhs.m_called)
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{
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rhs.m_called = true;
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}
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~proxy_member_caller()
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{
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if (m_called) return;
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m_called = true;
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// don't count the function and self-reference
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// since those will be popped by pcall
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int top = lua_gettop(L) - 2;
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// pcall will pop the function and self reference
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// and all the parameters
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push_args_from_tuple<1>::apply(L, m_args);
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if (pcall(L, boost::tuples::length<Tuple>::value + 1, 0))
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw luabind::error(L);
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#else
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error_callback_fun e = get_error_callback();
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if (e) e(L);
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assert(0 && "the lua function threw an error and exceptions are disabled."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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// pops the return values from the function
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stack_pop pop(L, lua_gettop(L) - top);
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}
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operator Ret()
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{
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typename mpl::apply_wrap2<default_policy,Ret,lua_to_cpp>::type converter;
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m_called = true;
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// don't count the function and self-reference
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// since those will be popped by pcall
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int top = lua_gettop(L) - 2;
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// pcall will pop the function and self reference
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// and all the parameters
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push_args_from_tuple<1>::apply(L, m_args);
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if (pcall(L, boost::tuples::length<Tuple>::value + 1, 1))
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw luabind::error(L);
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#else
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error_callback_fun e = get_error_callback();
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if (e) e(L);
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assert(0 && "the lua function threw an error and exceptions are disabled."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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// pops the return values from the function
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stack_pop pop(L, lua_gettop(L) - top);
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#ifndef LUABIND_NO_ERROR_CHECKING
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if (converter.match(L, LUABIND_DECORATE_TYPE(Ret), -1) < 0)
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw cast_failed(L, typeid(Ret));
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#else
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cast_failed_callback_fun e = get_cast_failed_callback();
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if (e) e(L, typeid(Ret));
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assert(0 && "the lua function's return value could not be converted."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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#endif
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return converter.apply(L, LUABIND_DECORATE_TYPE(Ret), -1);
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}
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template<class Policies>
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Ret operator[](const Policies& p)
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{
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typedef typename find_conversion_policy<0, Policies>::type converter_policy;
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typename mpl::apply_wrap2<converter_policy,Ret,lua_to_cpp>::type converter;
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m_called = true;
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// don't count the function and self-reference
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// since those will be popped by pcall
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int top = lua_gettop(L) - 2;
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// pcall will pop the function and self reference
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// and all the parameters
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detail::push_args_from_tuple<1>::apply(L, m_args, p);
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if (pcall(L, boost::tuples::length<Tuple>::value + 1, 1))
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw error(L);
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#else
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error_callback_fun e = get_error_callback();
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if (e) e(L);
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assert(0 && "the lua function threw an error and exceptions are disabled."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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// pops the return values from the function
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stack_pop pop(L, lua_gettop(L) - top);
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#ifndef LUABIND_NO_ERROR_CHECKING
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if (converter.match(L, LUABIND_DECORATE_TYPE(Ret), -1) < 0)
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw cast_failed(L, typeid(Ret));
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#else
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cast_failed_callback_fun e = get_cast_failed_callback();
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if (e) e(L, typeid(Ret));
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assert(0 && "the lua function's return value could not be converted."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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#endif
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return converter.apply(L, LUABIND_DECORATE_TYPE(Ret), -1);
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}
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private:
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lua_State* L;
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Tuple m_args;
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mutable bool m_called;
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};
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// if the proxy_member_caller returns void
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template<class Tuple>
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class proxy_member_void_caller
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{
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friend class luabind::object;
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public:
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proxy_member_void_caller(lua_State* L_, const Tuple args)
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: L(L_)
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, m_args(args)
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, m_called(false)
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{
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}
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proxy_member_void_caller(const proxy_member_void_caller& rhs)
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: L(rhs.L)
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, m_args(rhs.m_args)
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, m_called(rhs.m_called)
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{
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rhs.m_called = true;
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}
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~proxy_member_void_caller()
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{
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if (m_called) return;
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m_called = true;
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// don't count the function and self-reference
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// since those will be popped by pcall
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int top = lua_gettop(L) - 2;
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// pcall will pop the function and self reference
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// and all the parameters
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push_args_from_tuple<1>::apply(L, m_args);
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if (pcall(L, boost::tuples::length<Tuple>::value + 1, 0))
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw luabind::error(L);
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#else
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error_callback_fun e = get_error_callback();
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if (e) e(L);
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assert(0 && "the lua function threw an error and exceptions are disabled."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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// pops the return values from the function
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stack_pop pop(L, lua_gettop(L) - top);
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}
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template<class Policies>
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void operator[](const Policies& p)
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{
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m_called = true;
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// don't count the function and self-reference
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// since those will be popped by pcall
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int top = lua_gettop(L) - 2;
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// pcall will pop the function and self reference
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// and all the parameters
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detail::push_args_from_tuple<1>::apply(L, m_args, p);
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if (pcall(L, boost::tuples::length<Tuple>::value + 1, 0))
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{
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assert(lua_gettop(L) == top + 1);
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#ifndef LUABIND_NO_EXCEPTIONS
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throw error(L);
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#else
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error_callback_fun e = get_error_callback();
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if (e) e(L);
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assert(0 && "the lua function threw an error and exceptions are disabled."
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"If you want to handle this error use luabind::set_error_callback()");
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std::terminate();
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#endif
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}
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// pops the return values from the function
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stack_pop pop(L, lua_gettop(L) - top);
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}
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private:
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lua_State* L;
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Tuple m_args;
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mutable bool m_called;
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};
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} // detail
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#define BOOST_PP_ITERATION_PARAMS_1 (4, (0, LUABIND_MAX_ARITY, <luabind/detail/call_member.hpp>, 1))
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#include BOOST_PP_ITERATE()
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}
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#endif // LUABIND_CALL_MEMBER_HPP_INCLUDED
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#else
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#if BOOST_PP_ITERATION_FLAGS() == 1
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#define LUABIND_TUPLE_PARAMS(z, n, data) const A##n *
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#define LUABIND_OPERATOR_PARAMS(z, n, data) const A##n & a##n
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template<class R BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), class A)>
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typename boost::mpl::if_<boost::is_void<R>
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, luabind::detail::proxy_member_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
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, luabind::detail::proxy_member_caller<R, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type
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call_member(object const& obj, const char* name BOOST_PP_COMMA_IF(BOOST_PP_ITERATION()) BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_OPERATOR_PARAMS, _))
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{
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typedef boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> tuple_t;
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#if BOOST_PP_ITERATION() == 0
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tuple_t args;
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#else
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tuple_t args(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), &a));
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#endif
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typedef typename boost::mpl::if_<boost::is_void<R>
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, luabind::detail::proxy_member_void_caller<boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> >
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, luabind::detail::proxy_member_caller<R, boost::tuples::tuple<BOOST_PP_ENUM(BOOST_PP_ITERATION(), LUABIND_TUPLE_PARAMS, _)> > >::type proxy_type;
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// this will be cleaned up by the proxy object
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// once the call has been made
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// get the function
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obj.push(obj.interpreter());
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lua_pushstring(obj.interpreter(), name);
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lua_gettable(obj.interpreter(), -2);
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// duplicate the self-object
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lua_pushvalue(obj.interpreter(), -2);
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// remove the bottom self-object
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lua_remove(obj.interpreter(), -3);
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// now the function and self objects
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// are on the stack. These will both
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// be popped by pcall
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return proxy_type(obj.interpreter(), args);
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}
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#undef LUABIND_OPERATOR_PARAMS
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#undef LUABIND_TUPLE_PARAMS
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#endif
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#endif
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