Re: Pluging hooks in the parser?

[Michael Goffioul]

On 6/13/07, John W. Eaton <address@hidden> wrote:
> In the example above, what is the type of "java"?  If it is your own
> user-defined type, then can't you already do what you want from the
> subsref method in that octave_value sub-type?

"java" has no type. It's even not an object known to octave.
"java.lang.String" is just a class name (as "java.lang.System"). This
is basically the problem.

I know it's possible to "emulate" this by defining a "java" object and using
the normal subsref mechanism, but not all java classes starts with "java",
only the standard classes. Basically, it could be anything (or nothing).
Moreover, if you want to also support "import" (like Matlab does), even
the emulation is not possible:

import java.lang.*;
s = String('my string');
System.out.println("hello");

Maybe it's still possible to emulate all this (although it might become very
tricky). But I thought that a more generic implementation could be based on
some parser hooks. So I just wanted to know whether this was imaginable.

Michael.