any hope for a universal automatic parser?
You might be interested in learning about grammar induction: given a set of examples of strings from a context-free language, there are algorithms to learn a context-free grammar that generates those strings.

To learn more about it, read the Wikipedia article I linked to, and Inducing a context free grammar, Is there a known method for constructing a grammar given a finite set of finite strings?, and the the Sequitur, Lempel-Ziv-Welch, and byte pair encoding algorithms.

There's no hope for automatically building an interpreter for the language, because that depends on the semantics (meaning) of the programs, and you can't determine that solely from the program source code; the most you can hope to learn is to characterize the syntax of the language, not the semantics.