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Merge pull request #1144 from mc-server/LuaCodeGen 

Lua code gen
This commit is contained in:
Mattes D 2014-07-06 14:44:52 +02:00
parent 562d14e8ec b6d5d50b31
commit 7e3b26e7ba
5 changed files with 227 additions and 624 deletions
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1
src/Bindings/.gitignore vendored
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@ -1 +1,2 @@
lua51.dll
LuaState_Call.inc

629
src/Bindings/LuaState.h
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@ -9,10 +9,11 @@ Owned lua_State is created by calling Create() and the cLuaState automatically c
Or, lua_State can be attached by calling Attach(), the cLuaState doesn't close such a state
Attaching a state will automatically close an owned state.
Calling a Lua function is done by pushing the function, either by PushFunction() or PushFunctionFromRegistry(),
then pushing the arguments (PushString(), PushNumber(), PushUserData() etc.) and finally
executing CallFunction(). cLuaState automatically keeps track of the number of arguments and the name of the
function (for logging purposes), which makes the call less error-prone.
Calling a Lua function is done internally by pushing the function using PushFunction(), then pushing the
arguments and finally executing CallFunction(). cLuaState automatically keeps track of the number of
arguments and the name of the function (for logging purposes). After the call the return values are read from
the stack using GetStackValue(). All of this is wrapped in a templated function overloads cLuaState::Call(),
which is generated automatically by gen_LuaState_Call.lua script file into the LuaState_Call.inc file.
Reference management is provided by the cLuaState::cRef class. This is used when you need to hold a reference to
any Lua object across several function calls; usually this is used for callbacks. The class is RAII-like, with
@ -228,624 +229,8 @@ public:
void GetStackValue(int a_StackPos, eWeather & a_Value);
/** Call any 0-param 0-return Lua function in a single line: */
template <typename FnT>
bool Call(FnT a_FnName)
{
if (!PushFunction(a_FnName))
{
return false;
}
return CallFunction(0);
}
/** Call any 1-param 0-return Lua function in a single line: */
template<
typename FnT,
typename ArgT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1)
{
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
return CallFunction(0);
}
/** Call any 2-param 0-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2)
{
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
return CallFunction(0);
}
/** Call any 3-param 0-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3)
{
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
return CallFunction(0);
}
/** Call any 0-param 1-return Lua function in a single line: */
template<
typename FnT, typename RetT1
>
bool Call(FnT a_FnName, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 1-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, const cRet & a_Mark, RetT1 & a_Ret1)
{
int InitialTop = lua_gettop(m_LuaState);
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
ASSERT(InitialTop == lua_gettop(m_LuaState));
return true;
}
/** Call any 2-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 3-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 4-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 5-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 6-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 7-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 8-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
Push(a_Arg8);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 9-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename ArgT9, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
Push(a_Arg8);
Push(a_Arg9);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 10-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename ArgT9, typename ArgT10, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, ArgT10 a_Arg10, const cRet & a_Mark, RetT1 & a_Ret1)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
Push(a_Arg8);
Push(a_Arg9);
Push(a_Arg10);
if (!CallFunction(1))
{
return false;
}
GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
/** Call any 1-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 2-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 3-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3,
typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 4-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4,
typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 5-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 6-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6,
typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 7-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7,
typename RetT1, typename RetT2
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
/** Call any 7-param 3-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7,
typename RetT1, typename RetT2, typename RetT3
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
if (!CallFunction(3))
{
return false;
}
GetStackValue(-3, a_Ret1);
GetStackValue(-2, a_Ret2);
GetStackValue(-1, a_Ret3);
lua_pop(m_LuaState, 3);
return true;
}
/** Call any 8-param 3-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7, typename ArgT8,
typename RetT1, typename RetT2, typename RetT3
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
Push(a_Arg8);
if (!CallFunction(3))
{
return false;
}
GetStackValue(-3, a_Ret1);
GetStackValue(-2, a_Ret2);
GetStackValue(-1, a_Ret3);
lua_pop(m_LuaState, 3);
return true;
}
/** Call any 9-param 5-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7, typename ArgT8, typename ArgT9,
typename RetT1, typename RetT2, typename RetT3, typename RetT4, typename RetT5
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, ArgT2 a_Arg2, ArgT3 a_Arg3, ArgT4 a_Arg4, ArgT5 a_Arg5, ArgT6 a_Arg6, ArgT7 a_Arg7, ArgT8 a_Arg8, ArgT9 a_Arg9, const cRet & a_Mark, RetT1 & a_Ret1, RetT2 & a_Ret2, RetT3 & a_Ret3, RetT4 & a_Ret4, RetT5 & a_Ret5)
{
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
return false;
}
Push(a_Arg1);
Push(a_Arg2);
Push(a_Arg3);
Push(a_Arg4);
Push(a_Arg5);
Push(a_Arg6);
Push(a_Arg7);
Push(a_Arg8);
Push(a_Arg9);
if (!CallFunction(5))
{
return false;
}
GetStackValue(-5, a_Ret1);
GetStackValue(-4, a_Ret2);
GetStackValue(-3, a_Ret3);
GetStackValue(-2, a_Ret4);
GetStackValue(-1, a_Ret5);
lua_pop(m_LuaState, 5);
return true;
}
// Include the cLuaState::Call() overload implementation that is generated by the gen_LuaState_Call.lua script:
#include "LuaState_Call.inc"
/** Returns true if the specified parameters on the stack are of the specified usertable type; also logs warning if not. Used for static functions */

196
src/Bindings/gen_LuaState_Call.lua Normal file
View File

@ -0,0 +1,196 @@
-- gen_LuaState_Call.lua
-- Generates the cLuaState::Call() function templates that are included from LuaState.h
--[[
The cLuaState::Call() family of functions provides a template-based system for calling any Lua function
either by name or by reference with almost any number of parameters and return values. This is done by
providing a number of overloads of the same name with variable number of template-type parameters. To
separate the arguments from the return values, a special type of cLuaState::cRet is used.
--]]
print("Generating LuaState_Call.inc...")
-- List of combinations (# params, # returns) to generate:
local Combinations =
{
-- no return values:
{0, 0},
{1, 0},
{2, 0},
{3, 0},
{4, 0},
-- 1 return value:
{0, 1},
{1, 1},
{2, 1},
{3, 1},
{4, 1},
{5, 1},
{6, 1},
{7, 1},
{8, 1},
{9, 1},
{10, 1},
-- 2 return values:
{0, 2},
{1, 2},
{2, 2},
{3, 2},
{4, 2},
{5, 2},
{6, 2},
{7, 2},
{8, 2},
{9, 2},
-- Special combinations:
{7, 3},
{8, 3},
{9, 5},
}
--- Writes a single overloaded function definition for the specified number of params and returns into f
--[[
The format for the generated function is this:
/** Call the specified 3-param 2-return Lua function:
Returns true if call succeeded, false if there was an error. */
template <typename FnT, typename ParamT1, typename ParamT2, typename ParamT3, typename RetT1, typename RetT2>
bool Call(FnT a_Function, ParamT1 a_Param1, ParamT2 a_Param2, ParamT3 a_Param3, const cLuaState::cRet & a_RetMark, RetT1 & a_Ret1, RetT2 & a_Ret2)
{
UNUSED(a_RetMark);
if (!PushFunction(a_Function))
{
return false;
}
Push(a_Param1);
Push(a_Param2);
Push(a_Param3);
if (!CallFunction(2))
{
return false;
}
GetStackValue(-2, a_Ret1);
GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
Note especially the negative numbers in GetStackValue() calls.
--]]
local function WriteOverload(f, a_NumParams, a_NumReturns)
-- Write the function doxy-comments:
f:write("/** Call the specified ", a_NumParams, "-param ", a_NumReturns, "-return Lua function:\n")
f:write("Returns true if call succeeded, false if there was an error. */\n")
-- Write the template <...> line:
f:write("template <typename FnT")
for i = 1, a_NumParams do
f:write(", typename ParamT", i)
end
if (a_NumReturns > 0) then
for i = 1, a_NumReturns do
f:write(", typename RetT", i)
end
end
f:write(">\n")
-- Write the function signature:
f:write("bool Call(")
f:write("FnT a_Function")
for i = 1, a_NumParams do
f:write(", ParamT", i, " a_Param", i)
end
if (a_NumReturns > 0) then
f:write(", const cLuaState::cRet & a_RetMark")
for i = 1, a_NumReturns do
f:write(", RetT", i, " & a_Ret", i)
end
end
f:write(")\n")
-- Common code:
f:write("{\n")
if (a_NumReturns > 0) then
f:write("\tUNUSED(a_RetMark);\n")
end
f:write("\tif (!PushFunction(a_Function))\n")
f:write("\t{\n")
f:write("\t\treturn false;\n")
f:write("\t}\n")
-- Push the params:
for i = 1, a_NumParams do
f:write("\tPush(a_Param", i, ");\n")
end
-- Call the function:
f:write("\tif (!CallFunction(", a_NumReturns, "))\n")
f:write("\t{\n")
f:write("\t\treturn false;\n")
f:write("\t}\n")
-- Get the return values:
for i = 1, a_NumReturns do
f:write("\tGetStackValue(", -1 - a_NumReturns + i, ", a_Ret", i, ");\n")
end
-- Pop the returns off the stack, if needed:
if (a_NumReturns > 0) then
f:write("\tlua_pop(m_LuaState, ", a_NumReturns, ");\n")
end
-- Everything ok:
f:write("\treturn true;\n")
f:write("}\n")
-- Separate from the next function:
f:write("\n\n\n\n\n")
end
local f = assert(io.open("LuaState_Call.inc", "w"))
-- Write file header:
f:write([[
// LuaState_Call.inc
// This file is auto-generated by gen_LuaState_Call.lua
// Make changes to the generator instead of to this file!
// This file contains the various overloads for the cLuaState::Call() function
// Each overload handles a different number of parameters / return values
]])
f:write("\n\n\n\n\n")
-- Write out a template function for each overload:
for _, combination in ipairs(Combinations) do
WriteOverload(f, combination[1], combination[2])
end
-- Close the generated file
f:close()
print("LuaState_Call.inc generated")

14
src/Bindings/virtual_method_hooks.lua
View File

@ -3,6 +3,20 @@ local disable_virtual_hooks = true
local enable_pure_virtual = true
local default_private_access = false
-- Code generators used by the build
-- Note that these are not exactly needed for the bindings, but rather we
-- misuse tolua's Lua engine to process files for us
dofile("gen_LuaState_Call.lua")
local access = {public = 0, protected = 1, private = 2}
function preparse_hook(p)

11
src/CMakeLists.txt
View File

@ -12,6 +12,7 @@ set(BINDING_DEPENDECIES
tolua
${CMAKE_CURRENT_SOURCE_DIR}/Bindings/virtual_method_hooks.lua
${CMAKE_CURRENT_SOURCE_DIR}/Bindings/AllToLua.pkg
Bindings/gen_LuaState_Call.lua
Bindings/LuaFunctions.h
Bindings/LuaWindow.h
Bindings/Plugin.h
@ -79,13 +80,19 @@ set(BINDING_DEPENDECIES
World.h
)
# List all the files that are generated as part of the Bindings build process
set (BINDING_OUTPUTS
${CMAKE_CURRENT_SOURCE_DIR}/Bindings/Bindings.cpp
${CMAKE_CURRENT_SOURCE_DIR}/Bindings/Bindings.h
${CMAKE_CURRENT_SOURCE_DIR}/Bindings/LuaState_Call.inc
)
include_directories(Bindings)
include_directories(.)
if (WIN32)
ADD_CUSTOM_COMMAND(
# add any new generated bindings here
OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/Bindings/Bindings.cpp ${CMAKE_CURRENT_SOURCE_DIR}/Bindings/Bindings.h
OUTPUT ${BINDING_OUTPUTS}
# Copy the Lua DLL into the Bindings folder, so that tolua can run from there:
COMMAND ${CMAKE_COMMAND} -E copy_if_different ../../MCServer/lua51.dll ./lua51.dll