;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; Copyright (C) 2010 Ian Hulin <ian@hulin.org.uk>
+;;;; Copyright (C) 2010--2011 Ian Hulin <ian@hulin.org.uk>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; You should have received a copy of the GNU General Public License
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+;;; Commentary:
+
+;;; This file provides the support routines for a guile debugger called
+;;; from a environment controlled by LilyPond. It works in conjunction
+;;; with file guile-debugger.ly.
+
+;;; Code:
+
(define-module (scm guile-debugger)
#:use-module (ice-9 debugger)
#:use-module (ice-9 debugging traps)
#:use-module (ice-9 debugging steps)
#:use-module (ice-9 debugging ice-9-debugger-extensions)
#:use-module (ice-9 readline)
- #:export (set-break! set-trace! set-trace-subtree!))
+ #:export (set-break!
+ clear-break!
+ set-trace-call!
+ clear-trace-call!
+ set-trace-subtree!
+ clear-trace-subtree!
+ debug-help))
(define (set-break! proc)
(install-trap (make <procedure-trap>
- #:procedure proc
- #:behaviour debug-trap)))
+ #:procedure proc
+ #:behaviour debug-trap)))
+(define (clear-break! proc)
+ (uninstall-trap (make <procedure-trap>
+ #:procedure proc
+ #:behaviour debug-trap)))
-(define (set-trace! proc)
+
+(define (set-trace-call! proc)
(install-trap (make <procedure-trap>
- #:procedure proc
- #:behaviour (list trace-trap
- trace-at-exit))))
+ #:procedure proc
+ #:behaviour (list trace-trap
+ trace-at-exit))))
+(define (clear-trace-call! proc)
+ (uninstall-trap (make <procedure-trap>
+ #:procedure proc
+ #:behaviour (list trace-trap
+ trace-at-exit))))
(define (set-trace-subtree! proc)
(install-trap (make <procedure-trap>
- #:procedure proc
- #:behaviour (list trace-trap
- trace-until-exit))))
+ #:procedure proc
+ #:behaviour (list trace-trap
+ trace-until-exit))))
+
+(define (clear-trace-subtree! proc)
+ (uninstall-trap (make <procedure-trap>
+ #:procedure proc
+ #:behaviour (list trace-trap
+ trace-until-exit))))
+
+(define (debug-help )
+ (display "\nYou may add the following commands as debugging statements in your source file\n")
+ (display "or enter the set-x! commands at the guile prompt:\n\n")
+ (display " (set-break! <procedure>)\n")
+ (display " causes guile to enter debugger on a call to <procedure>\n")
+ (display " (clear-break! <procedure>)\n")
+ (display " disables a breakpoint previously set on a call to <procedure>\n")
+ (display " (set-trace-call! <procedure>)\n")
+ (display " prints out a line when Scheme enters or exits <procedure>\n")
+ (display " (clear-trace-call! <procedure>)\n")
+ (display " turns off tracing calls to <procedure>\n")
+ (display " (set-trace-subtree! <procedure>)\n")
+ (display " displays each line of Scheme code executed during a call to <procedure>\n")
+ (display " (clear-trace-subtree! <procedure>)\n")
+ (display " turns off tracing code during calls to <procedure>\n\n")
+ (display "Enter help at the guile debug> prompt for further information on debugger commands\n")
+ (newline))