-;;;; (ice-9 debugger breakpoints procedural) -- procedural breakpoints
-
-;;; Copyright (C) 2002 Free Software Foundation, Inc.
-;;;
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-;;; General Public License for more details.
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-;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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-;;; for additional uses of the text contained in its release of GUILE.
-;;;
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-;;; to produce an executable, this does not by itself cause the
-;;; resulting executable to be covered by the GNU General Public License.
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-;;; linking the GUILE library code into it.
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-
-(define-module (ice-9 debugger breakpoints procedural)
- #:use-module (ice-9 format)
- #:use-module (oop goops)
- #:use-module (ice-9 debugger breakpoints)
- #:use-module (ice-9 debugger trc)
- #:use-module (ice-9 debugger trap-hooks)
- #:export (<procedure-breakpoint>
- bp-procedure))
-
-;;; {Procedure Breakpoints}
-;;;
-;;; Breakpoints that activate upon application of a particular
-;;; procedure.
-
-(define-generic bp-procedure)
-(define-generic bp-hook)
-
-(define-class <procedure-breakpoint> (<breakpoint>)
-
- ;; The procedure to which this breakpoint applies.
- (procedure #:accessor bp-procedure
- #:init-keyword #:procedure)
-
- ;; The procedure that is registered as a trace hook for this
- ;; breakpoint, stored here so that we can easily deregister it.
- (hook #:accessor bp-hook))
-
-(define (nameify proc)
- (or (procedure-name proc) proc))
-
-(define-method (bp-message (bp <procedure-breakpoint>) message port)
- (format port
- "~A ~A: [~A]\n"
- message
- (bp-number bp)
- (nameify (bp-procedure bp))))
-
-;;; Alist of all procedure breakpoints:
-;;; ((PROCEDURE . BREAKPOINT) ...)
-;;; Keys are unique according to `eq?'.
-(define procedure-breakpoints '())
-
-(define-method (get-breakpoint (proc <procedure>))
- (assq-ref procedure-breakpoints proc))
-
-(define *proc* #f)
-
-(add-hook! before-apply-frame-hook
- (lambda (cont tail?)
- (trc 'before-apply-frame-hook tail?)
- ;(set! *expr* #f)
- (set! *proc* (frame-procedure (last-stack-frame cont)))))
-
-(define (add-breakpoint proc)
- (let* ((bp (make <procedure-breakpoint> #:procedure proc))
- (hook (lambda ()
- (if (eq? proc *proc*)
- (bp-run bp)))))
- (set-procedure-property! proc 'trace #t)
- (set! (bp-hook bp) hook)
- (add-trace-hook! hook)
- (set! procedure-breakpoints (assq-set! procedure-breakpoints proc bp))
- bp))
-
-(define-method (set-breakpoint! behaviour (proc <procedure>))
- (let ((bp (or (get-breakpoint proc)
- (add-breakpoint proc))))
- (set! (bp-behaviour bp) behaviour)
- (bp-message bp "Set breakpoint" #t)
- bp))
-
-(define-method (bp-delete! (bp <procedure-breakpoint>))
- (let ((proc (bp-procedure bp)))
- (set! procedure-breakpoints
- (assq-remove! procedure-breakpoints proc))
- (set-procedure-property! proc 'trace #f)
- (remove-trace-hook! (bp-hook bp))
- (bp-message bp "Deleted breakpoint" #t))
- *unspecified*)
-
-(register-breakpoint-subclass <procedure-breakpoint>
- (lambda ()
- (map cdr procedure-breakpoints)))
-
-;;; (ice-9 debugger breakpoints procedure) ends here.