35 lines
1.3 KiB
Scheme
35 lines
1.3 KiB
Scheme
|
;;; This file is part of the Scheme Untergrund Library.
|
||
|
|
|
||
|
|
;;; Copyright (c) 2002-2003 by Martin Gasbichler.
|
||
|
|
;;; For copyright information, see the file COPYING which comes with
|
||
|
|
;;; the distribution.
|
||
|
|
|
||
|
|
;; From SUnet plus one more call/cc to capture the continuation of the error
|
||
|
|
(define (with-fatal-and-capturing-error-handler* handler thunk)
|
||
|
|
(call-with-current-continuation
|
||
|
|
(lambda (accept)
|
||
|
|
((call-with-current-continuation
|
||
|
|
(lambda (k)
|
||
|
|
(with-handler
|
||
|
|
(lambda (condition more)
|
||
|
|
(primitive-cwcc
|
||
|
|
(lambda (condition-continuation)
|
||
|
|
(if (error? condition)
|
||
|
|
(call-with-current-continuation
|
||
|
|
(lambda (decline)
|
||
|
|
(k (lambda ()
|
||
|
|
(handler condition condition-continuation decline))))))
|
||
|
|
(more)))) ; Keep looking for a handler.
|
||
|
|
(lambda () (call-with-values thunk accept)))))))))
|
||
|
|
|
||
|
|
(define (with-inspecting-handler port thunk)
|
||
|
|
(with-fatal-and-capturing-error-handler*
|
||
|
|
(lambda (condition condition-continuation more)
|
||
|
|
(let ((res
|
||
|
|
(remote-repl "Welcome to the command processor of the remote scsh"
|
||
|
|
condition-continuation
|
||
|
|
port)))
|
||
|
|
;; TODO: option to return to continuation of handler (by leaving out the with-continuation)
|
||
|
|
(with-continuation condition-continuation (lambda () res))))
|
||
|
|
thunk))
|