[Bug-kawa] [bug #16594] Prefix-colon syntax: Warn when generating expensive runtime lookups

[Dean Ferreyra]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=16594>

                 Summary: Prefix-colon syntax: Warn when generating expensive
runtime lookups
                 Project: Kawa
            Submitted by: dferreyra
            Submitted on: Monday 05/15/2006 at 12:42
                Category: None
                Severity: 3 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open

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Details:

In this example:

  (module-static #t)
  
  (define-simple-class <A> ()
    ((an-identity-meth name)
     name)
    )
  
  (define a (<A>))
  
  ;; Inexpensive:
  ((as <A> a):anIdentityMeth 'foo)
  ;; Expensive:
  (a:anIdentityMeth 'foo)
  ;; Expensive:
  (*:anIdentityMeth a 'foo)

the last call gives the following warning, letting us know that an expensive
runtime lookup will be performed for each invocation:

  types.scm:15:1: warning - no accessible method 'anIdentityMeth' in
java.lang.Object

The feature request is that the second-to-the-last call also give us a
warning.






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