summaryrefslogtreecommitdiff
path: root/src/guile/skribilo/debug.scm
blob: 1a5478ec52e39dc8bd74c27d6cba4692bccdb0a8 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
;;;
;;; debug.scm	-- Debug Facilities (stolen to Manuel Serrano)
;;;
;;;
;;; Copyright � 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.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.
;;;
;;;           Author: Erick Gallesio [eg@essi.fr]
;;;    Creation date: 10-Aug-2003 20:45 (eg)
;;; Last file update: 28-Oct-2004 13:16 (eg)
;;;


(define-module (skribilo debug)
   :export (with-debug %with-debug
	    debug-item skribe-debug set-skribe-debug! add-skribe-debug-symbol
	    no-debug-color))


(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 (skribe-debug)
  *skribe-debug*)

;;
;;   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")
	     (interactive-port? *debug-port*))
	(lambda ()
	  (format #t "[1;~Am" (+ 31 col))
	  (for-each display o)
	  (display ""))
	(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))