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;;; debug.scm -- Debug facilities.
;;;
;;; Copyright 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;; Copyright 2005 Ludovic Court�s <ludovic.courtes@laas.fr>
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
;;; USA.
(define-module (skribilo debug)
:export (with-debug %with-debug
debug-item skribe-debug set-skribe-debug! add-skribe-debug-symbol
no-debug-color)
:use-module (skribilo utils syntax)
:use-module (srfi srfi-17))
(fluid-set! current-reader %skribilo-module-reader)
;;; FIXME: Use SRFI-39 fluids.
;;; FIXME: Move this to `parameters.scm'?
(define *skribe-debug* 0)
(define *skribe-debug-symbols* '())
(define *skribe-debug-color* #t)
(define *skribe-debug-item* #f)
(define *debug-port* (current-error-port))
(define *debug-depth* 0)
(define *debug-margin* "")
(define *skribe-margin-debug-level* 0)
(define (set-skribe-debug! val)
(set! *skribe-debug* val))
(define (add-skribe-debug-symbol s)
(set! *skribe-debug-symbols* (cons s *skribe-debug-symbols*)))
(define (no-debug-color)
(set! *skribe-debug-color* #f))
(define-public skribe-debug
(getter-with-setter (lambda () *skribe-debug*)
(lambda (val) (set! *skribe-debug* val))))
;;
;; debug-port
;;
; (define (debug-port . o)
; (cond
; ((null? o)
; *debug-port*)
; ((output-port? (car o))
; (set! *debug-port* o)
; o)
; (else
; (error 'debug-port "Illegal debug port" (car o)))))
;
;;;
;;; debug-color
;;;
(define (debug-color col . o)
(with-output-to-string
(if (and *skribe-debug-color*
(equal? (getenv "TERM") "xterm"))
(lambda ()
(format #t "[0m[1;~Am" (+ 31 col))
(for-each display o)
(display "[0m"))
(lambda ()
(for-each display o)))))
;;;
;;; debug-bold
;;;
(define (debug-bold . o)
(apply debug-color -30 o))
;;;
;;; debug-item
;;;
(define (debug-item . args)
(if (or (>= *skribe-debug* *skribe-margin-debug-level*)
*skribe-debug-item*)
(begin
(display *debug-margin* *debug-port*)
(display (debug-color (- *debug-depth* 1) "- ") *debug-port*)
(for-each (lambda (a) (display a *debug-port*)) args)
(newline *debug-port*))))
;;(define-macro (debug-item . args)
;; `())
;;;
;;; %with-debug-margin
;;;
(define (%with-debug-margin margin thunk)
(let ((om *debug-margin*))
(set! *debug-depth* (+ *debug-depth* 1))
(set! *debug-margin* (string-append om margin))
(let ((res (thunk)))
(set! *debug-depth* (- *debug-depth* 1))
(set! *debug-margin* om)
res)))
;;;
;;; %with-debug
;;
(define (%with-debug lvl lbl thunk)
(let ((ol *skribe-margin-debug-level*)
(oi *skribe-debug-item*))
(set! *skribe-margin-debug-level* lvl)
(let ((r (if (or (and (number? lvl) (>= *skribe-debug* lvl))
(and (symbol? lbl)
(memq lbl *skribe-debug-symbols*)
(set! *skribe-debug-item* #t)))
(begin
(display *debug-margin* *debug-port*)
(display (if (= *debug-depth* 0)
(debug-color *debug-depth* "+ " lbl)
(debug-color *debug-depth* "--+ " lbl))
*debug-port*)
(newline *debug-port*)
(%with-debug-margin (debug-color *debug-depth* " |")
thunk))
(thunk))))
(set! *skribe-debug-item* oi)
(set! *skribe-margin-debug-level* ol)
r)))
(define-macro (with-debug level label . body)
`(%with-debug ,level ,label (lambda () ,@body)))
;;(define-macro (with-debug level label . body)
;; `(begin ,@body))
; Example:
; (with-debug 0 'foo1.1
; (debug-item 'foo2.1)
; (debug-item 'foo2.2)
; (with-debug 0 'foo2.3
; (debug-item 'foo3.1)
; (with-debug 0 'foo3.2
; (debug-item 'foo4.1)
; (debug-item 'foo4.2))
; (debug-item 'foo3.3))
; (debug-item 'foo2.4))
;;; debug.scm ends here
|
