Re: A interesting question about call C functions

[Jerome Vuarand <jerome.vuarand@...>]

2011/2/28 sagasw <sagasw@gmail.com>:
> The functions we want to call is foo1 and foo2, they has different types of
> args and return value.
>
> int foo1(int a) {
>
>     ...
>     return intValue;
> }
>
> double foo2(char* str, double a) {
>
>    ...
>    return dblValue;
> }
>
> In C client, call the function like:
>     lua_returnValue returnValue1 = Do_Lua_Wrap(__FILE__, __LINE__, foo1, 1);
>     lua_returnValue returnValue2 = Do_Lua_Wrap(__FILE__, __LINE__, foo2,
> "string data", 1.2345);
> In the Do_Lua_Wrap, it will pass the foo1 and 1 to the Lua function, then
> call foo1 function like normal process.
> Then pass the foo2 and one char* and one double value to the Lua function,
> then call foo2 function like normal process.
> In the Lua function, it could log the information about __FILE__ and
> __LINE__
> and write some extra log about function arguments.
> But I don't have idea about how to write the function Do_Lua_Wrap in C and
> Lua,
> Is it possible?
> If possible, could you give me some advices?

You make several references to "the Lua function". Where is that
function located ? Also, where is the lua_State ?