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51d237110f
* scheme-using.texi: New (merged with modifications from CVS HEAD). * Makefile.am, gds-scheme.el, gds-server.el, gds.el: New (merged with modifications from CVS HEAD). * debugging/Makefile.am, debugging/example-fns.scm, debugging/ice-9-debugger-extensions.scm, debugging/steps.scm, debugging/trace.scm, debugging/traps.scm, debugging/trc.scm: New (merged with modifications from CVS HEAD). * gds-client.scm, gds-server.scm: New (merged with modifications from CVS HEAD).
106 lines
3.5 KiB
Scheme
106 lines
3.5 KiB
Scheme
;;;; (ice-9 debugging steps) -- stepping through code from the debugger
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;;; Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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;;;
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;; This library is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU Lesser General Public
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;; License as published by the Free Software Foundation; either
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;; version 2.1 of the License, or (at your option) any later version.
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;;
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;; This library is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; Lesser General Public License for more details.
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;;
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;; You should have received a copy of the GNU Lesser General Public
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;; License along with this library; if not, write to the Free Software
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;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(define-module (ice-9 debugging steps)
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#:use-module (ice-9 debugging traps)
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#:use-module (ice-9 and-let-star)
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#:use-module (ice-9 debugger)
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#:use-module (ice-9 optargs)
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#:export (at-exit
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at-entry
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at-apply
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at-step
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at-next))
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;;; at-exit DEPTH BEHAVIOUR
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;;;
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;;; Install a behaviour to run when we exit the current frame.
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(define (at-exit depth behaviour)
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(install-trap (make <exit-trap>
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#:depth depth
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#:single-shot #t
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#:behaviour behaviour)))
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;;; at-entry BEHAVIOUR [COUNT]
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;;;
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;;; Install a behaviour to run when we get to the COUNT'th next frame
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;;; entry. COUNT defaults to 1.
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(define* (at-entry behaviour #:optional (count 1))
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(install-trap (make <entry-trap>
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#:skip-count (- count 1)
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#:single-shot #t
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#:behaviour behaviour)))
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;;; at-apply BEHAVIOUR [COUNT]
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;;;
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;;; Install a behaviour to run when we get to the COUNT'th next
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;;; application. COUNT defaults to 1.
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(define* (at-apply behaviour #:optional (count 1))
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(install-trap (make <apply-trap>
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#:skip-count (- count 1)
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#:single-shot #t
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#:behaviour behaviour)))
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;;; at-step BEHAVIOUR [COUNT [FILENAME [DEPTH]]
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;;;
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;;; Install BEHAVIOUR to run on the COUNT'th next application, frame
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;;; entry or frame exit. COUNT defaults to 1. If FILENAME is
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;;; specified and not #f, only frames that begin in the named file are
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;;; counted.
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(define* (at-step behaviour #:optional (count 1) filename (depth 1000))
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(install-trap (make <step-trap>
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#:file-name filename
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#:exit-depth depth
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#:skip-count (- count 1)
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#:single-shot #t
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#:behaviour behaviour)))
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;; (or count (set! count 1))
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;; (letrec ((proc (lambda (trap-context)
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;; ;; Behaviour whenever we enter or exit a frame.
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;; (set! count (- count 1))
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;; (if (= count 0)
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;; (begin
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;; (remove-enter-frame-hook! step)
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;; (remove-apply-frame-hook! step)
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;; (behaviour trap-context)))))
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;; (step (lambda (trap-context)
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;; ;; Behaviour on frame entry: both execute the above
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;; ;; and install it as an exit hook.
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;; (if (or (not filename)
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;; (equal? (frame-file-name (tc:frame trap-context))
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;; filename))
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;; (begin
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;; (proc trap-context)
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;; (at-exit (tc:depth trap-context) proc))))))
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;; (at-exit depth proc)
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;; (add-enter-frame-hook! step)
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;; (add-apply-frame-hook! step)))
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;;; at-next BEHAVIOUR [COUNT]
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;;;
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;;; Install a behaviour to run when we get to the COUNT'th next frame
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;;; entry in the same source file as the current location. COUNT
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;;; defaults to 1. If the current location has no filename, fall back
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;;; silently to `at-entry' behaviour.
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;;; (ice-9 debugging steps) ends here.
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