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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
;;; doc.scm -- procedures providing documentation on scheme objects
;; Copyright (C) 2009, 2010 Jose Antonio Ortega Ruiz
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the Modified BSD License. You should
;; have received a copy of the license along with this program. If
;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
;; Start date: Sun Feb 08, 2009 18:44
(define-module (geiser doc)
#:export (autodoc
symbol-documentation
object-signature)
#:use-module (geiser utils)
#:use-module (geiser modules)
#:use-module (system vm program)
#:use-module (ice-9 session)
#:use-module (ice-9 documentation)
#:use-module (ice-9 regex)
#:use-module (oop goops)
#:use-module (srfi srfi-1))
(define (autodoc ids)
(if (not (list? ids))
'()
(map (lambda (id) (or (autodoc* id) (list id))) ids)))
(define (autodoc* id)
(let ((args (obj-args (symbol->object id))))
(and args
`(,@(signature id args)
(module . ,(symbol-module id))))))
(define (object-signature name obj)
(let ((args (obj-args obj)))
(and args (signature name args))))
(define (signature id args-list)
(define (rem-gensyms args)
(map (lambda (s) (if (gensym? s) '_
(if (list? s) (rem-gensyms s) s))) args))
(define (arglst args kind)
(let ((args (assq-ref args kind)))
(rem-gensyms (cond ((or (not args) (null? args)) '())
((list? args) args)
(else (list args))))))
(define (mkargs as)
`((required ,@(arglst as 'required))
(optional ,@(arglst as 'optional)
,@(let ((rest (assq-ref as 'rest)))
(if rest (list "...") '())))
(key ,@(arglst as 'keyword))))
(let ((args-list (map mkargs (if (list? args-list) args-list '()))))
(list id (cons 'args args-list))))
(define (obj-args obj)
(cond ((not obj) #f)
((or (procedure? obj) (program? obj)) (arguments obj))
((macro? obj) '(((required ...))))
(else 'variable)))
(define (arguments proc)
(define (p-arguments prog)
(map (lambda (a) ((@@ (system vm program) arity->arguments-alist) prog a))
(or (program-arities prog) '())))
(define (clist f) (lambda (x) (let ((y (f x))) (and y (list y)))))
(cond ((is-a? proc <generic>) (generic-args proc))
((procedure-property proc 'arglist) => (clist arglist->args))
((procedure-source proc) => (clist source->args))
((doc->args proc) => list)
((program? proc) (let ((a (p-arguments proc)))
(and (not (null? a)) a)))
((procedure-property proc 'arity) => (clist arity->args))
(else #f)))
(define (source->args src)
(let ((formals (cadr src)))
(cond ((list? formals) `((required . ,formals)))
((pair? formals)
`((required . ,(car formals)) (rest . ,(cdr formals))))
(else #f))))
(define (arity->args art)
(define (gen-arg-names count)
(map (lambda (x) '_) (iota (max count 0))))
(let ((req (car art))
(opt (cadr art))
(rest (caddr art)))
`(,@(if (> req 0)
(list (cons 'required (gen-arg-names req)))
'())
,@(if (> opt 0)
(list (cons 'optional (gen-arg-names opt)))
'())
,@(if rest (list (cons 'rest 'rest)) '()))))
(define (arglist->args arglist)
`((required . ,(car arglist))
(optional . ,(cadr arglist))
(keyword . ,(caddr arglist))
(rest . ,(car (cddddr arglist)))))
(define (doc->args proc)
(define proc-rx "-- Scheme Procedure: ([^[\n]+)\n")
(define proc-rx2 "-- Scheme Procedure: ([^[\n]+\\[[^\n]*(\n[^\n]+\\]+)?)")
(cond ((procedure-property proc 'geiser-document-args))
((object-documentation proc)
=> (lambda (doc)
(let* ((match (or (string-match proc-rx doc)
(string-match proc-rx2 doc)))
(args (and match
(parse-signature-string
(match:substring match 1)))))
(set-procedure-property! proc 'geiser-document-args args)
args)))
(else #f)))
(define (parse-signature-string str)
(define opt-arg-rx "\\[([^] ]+)\\]?")
(define opt-arg-rx2 "([^ ])+\\]+")
(let ((tokens (string-tokenize str)))
(if (< (length tokens) 2)
'()
(let loop ((tokens (cdr tokens)) (req '()) (opt '()) (rest #f))
(cond ((null? tokens)
`((required ,@(map string->symbol (reverse! req)))
(optional ,@(map string->symbol (reverse! opt)))
,@(if rest
(list (cons 'rest (string->symbol rest)))
'())))
((string=? "." (car tokens))
(if (not (null? (cdr tokens)))
(loop (cddr tokens) req opt (cadr tokens))
(loop '() req opt "rest")))
((or (string-match opt-arg-rx (car tokens))
(string-match opt-arg-rx2 (car tokens)))
=> (lambda (m)
(loop (cdr tokens)
req
(cons (match:substring m 1) opt)
rest)))
(else (loop (cdr tokens)
(cons (car tokens) req)
opt
rest)))))))
(define (generic-args gen)
(define (src> src1 src2)
(> (length (cadr src1)) (length (cadr src2))))
(define (src m)
(catch #t
(lambda () (method-source m))
(lambda (k . a) #f)))
(let* ((methods (generic-function-methods gen))
(srcs (filter identity (map src methods))))
(cond ((and (null? srcs)
(not (null? methods))
(method-procedure (car methods))) => arguments)
((not (null? srcs)) (list (source->args (car (sort! srcs src>)))))
(else '(((rest . rest)))))))
(define (symbol-documentation sym)
(let ((obj (symbol->object sym)))
(if obj
`((signature . ,(or (obj-signature sym obj) sym))
(docstring . ,(docstring sym obj))))))
(define (docstring sym obj)
(with-output-to-string
(lambda ()
(let* ((type (cond ((macro? obj) "A macro")
((procedure? obj) "A procedure")
((program? obj) "A compiled program")
(else "An object")))
(modname (symbol-module sym))
(doc (object-documentation obj)))
(display type)
(if modname
(begin
(display " in module ")
(display modname)))
(newline)
(if doc (display doc))))))
(define (obj-signature sym obj)
(let ((args (obj-args obj)))
(and args (signature sym args))))
;;; doc.scm ends here
|
