[armedbear-devel] JSS issues: bug in jss::with-constant-signature, jss::invoke-find-method?

[Jonathan P. Bona]

I'm working with Alan Ruttenberg to port LSW from the old version of
JSS to the JSS that is now part of abcl-contrib.

We've run into the following bug when using with-constant-signature:

; these first two work fine:
(#"substring" "some string" 2 4)  ; "me"
(#"substring" "some string" 2)     ; "me string"

; and so does this
(with-constant-signature ((substring "substring")) (substring "some
string" 2 4))   ; "me"

; but this breaks:
(with-constant-signature ((substring "substring")) (substring "some string" 2))
; Wrong number of arguments for public java.lang.String
java.lang.String.substring(int,int): expected 2, got 1
;   [Condition of type PROGRAM-ERROR]


A problem seems to be in jss::invoke-find-method, which is finding the
two argument version of java.lang.String.substring no matter how many
arguments its given:

(jss::invoke-find-method "substring" "this is a string" '(1))  ;
should return the java.lang.String.substring method with one int arg
; #<method public java.lang.String java.lang.String.substring(int,int)>

(jss::invoke-find-method "substring" "this is a string" '(1 2) )
; #<method public java.lang.String java.lang.String.substring(int,int)>

(jss::invoke-find-method "substring" "this is a string" '(1 2 3 4 5 6
7 8) )  ; should be an error
; #<method public java.lang.String java.lang.String.substring(int,int)>




- Jonathan Bona