RE: Class types

[Chris Dean <ctdean at sokitomi dot com>]

> I guess you try to obtain the Java class object corresponding to a Kawa
> class.

Exactly.

> (define (foo)
>   (invoke (as <gnu.bytecode.ClassType> <java.util.Date>) 'getClass))

This also gives a warning:

    % java kawa.repl  --warn-undefined-variable -C Foo.scm
    (compiling Foo.scm)
    Foo.scm:11:40: warning - no declaration seen for <java.util.Date>

The warning is a hint that Kawa will generate code to do a runtime
lookup of <java.util.Date> rather than generating more efficient compile
time code.  In this case we generate Java byte code equivalent to:

    public static Class foo() {
        return ((ClassType)
                Interpreter.getSymbolValue(id$$Lsjava$Dtutil$DtDate$Gr))
                   .getClass();
    }

The best way might be to call Class.forName( "java.util.Date" ), but if
Kawa has an existing variable that has the class I'd prefer to use that.

Regards,
Chris Dean