Function pointers, calling, and templates

The_Nerd · 10-09-2005, 04:51 PM

Hello! I need to do the same thing in my code that Boost.Python does. Namely, this:

Code:

int Function(int Var1, int Var2, char Var3, long Var4)
{
....
}

int Function2(int Var1)
{
....
}

char Function3(bool Bar1)
{
....
}

InitFunctions()
{
    def("Function", Function);
    def("Function2", Function2);
    def("Function3", Function3);
}

I then need to be able to loop through the list of function names (strings) and call them acordingly.

Example:

Code:

int MyVar, MyVar2;
char MyVar3;
long MyVar4;

CallFunction("Function", MyVar, MyVar2, MyVar3, MyVar4);

I am using C++, so I can use templates, macros, what ever. I just don't know where to even start, so please help me! I am very stuck in my code until I figure this out. Thanks!

spooon · 10-09-2005, 05:29 PM

Python is a high-level interpreted language, so you can do things like calling functions in weird ways and stuff; but C++ is a more low-level compiled language. You can have pointers to functions, but they are still strongly typed, so I don't think there is an easy general way to refer to functions by name or something.

The_Nerd · 10-09-2005, 07:08 PM

I just need to know the arguments at compile time. I can write wrappers (I figured I would have to). I am attempting to make my own simple scripting language. I got almost everything figured out, except function calling. I want my scripting language to tie into the C++ program very easily. You know, like you just do something like so:

Code:

DataType(int);

And that will enable you to use native int's in the scripting language. Of course user specified classes will be a freature as well, even though they might be a little more complicated. I just don't want the user to have to write a function for every aspect of everything, and in every function have to parse out there args.

Help!