invoking a method on an object

[Ganesh Chakka]

I am trying to solve a problem in our application. I am at a point
where I want to invoke a method on the object based on the name of the
method.

======================================================
For Example :

From a configuration file I would know that I have to invoke a method
"foo" on object "o".

So, I have 2 strings "foo" and "o" in the code at run time.

I have to now do something to invoke this method "foo" on "o". That is
I have to do o.foo() at runtime.

======================================================

I know this is possible in java using reflection. Does any one know
how I can do this in C++?

Thanks in advance for any help.

-Ganesh.

 

[Sharad Kala]

I am trying to solve a problem in our application. I am at a point
where I want to invoke a method on the object based on the name of the
method.

======================================================
For Example :

From a configuration file I would know that I have to invoke a method
"foo" on object "o".

So, I have 2 strings "foo" and "o" in the code at run time.

I have to now do something to invoke this method "foo" on "o". That is
I have to do o.foo() at runtime.

======================================================

I know this is possible in java using reflection. Does any one know
how I can do this in C++?

One possible way is -
1. Create objects using the factory pattern.
2. Maintain a map of string and pointer to member function.
typedef void (A::*foofn)();
map<string, foofn> a;
3. Invoke methods using the lookup in map.

Ofcourse this method has limitations.

-Sharad