I'm trying to use ROOT as a "callable" interpreter. Say, I have an
object in the compiled program on which I want to run an interpreted
code. Let's say I have following code:
// --- test1.h - will be processed with |rootcint|
class A {
public:
A(int) {}
// ....
private:
// ....
};
// --- test2.cxx - this the interpreted code
class B {
public:
B() {}
doSomething(const A*) {}
};
Now what I want is to create an object of class A in the compiled code
and pass it to the B::doSomething(). I have something like this in the
main():
TApplication *theApp = new TRint(appname, &argc, argv, 0, 0);
theApp->ProcessLine(".L test2.cxx"); // load interpreted code
theApp->ProcessLine("B *b = new B;"); // create an instance of
class B in interpreter
A *a = new A ; // make an instance of "A" in
compiled program
// Now how do I?
theApp->ProcessLine("b->doSomething(a);"); // "a" means above
allocated a
All I could think of is to take an address of "a" and make a cast,
something like that:
char buf[64] ;
sprintf ( buf, "b->doSomething((A*)%d);", &a ) ;
theApp->ProcessLine( buf ) ;
That looks quite clumsy, and I'm not at all sure this will work. So,
does someone have a nice solution for this? Probably I should play with
the dictionary to make "a" seen to the interpreter? But how do I do
this?
Cheers,
Andy.