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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
;;; resolve.scm -- Skribilo reference resolution.
;;;
;;; 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 resolve)
:use-module (skribilo debug)
:use-module (skribilo runtime)
:use-module (skribilo ast)
:use-module (skribilo utils syntax)
:use-module (oop goops)
:use-module (srfi srfi-39)
:export (resolve! resolve-search-parent resolve-children resolve-children*
find1 resolve-counter resolve-parent resolve-ident))
(fluid-set! current-reader %skribilo-module-reader)
(define *unresolved* (make-parameter #f))
(define-generic do-resolve!)
;;;; ======================================================================
;;;;
;;;; RESOLVE!
;;;;
;;;; This function iterates over an ast until all unresolved references
;;;; are resolved.
;;;;
;;;; ======================================================================
(define (resolve! ast engine env)
(with-debug 3 'resolve
(debug-item "ast=" ast)
(parameterize ((*unresolved* #f))
(let Loop ((ast ast))
(*unresolved* #f)
(let ((ast (do-resolve! ast engine env)))
(if (*unresolved*)
(begin
(debug-item "iterating over ast " ast)
(Loop ast))
ast))))))
;;;; ======================================================================
;;;;
;;;; D O - R E S O L V E !
;;;;
;;;; ======================================================================
(define-method (do-resolve! ast engine env)
ast)
(define-method (do-resolve! (ast <pair>) engine env)
(let Loop ((n* ast))
(cond
((null? n*)
ast)
((list? n*)
(set-car! n* (do-resolve! (car n*) engine env))
(Loop (cdr n*)))
((pair? n*)
(set-car! n* (do-resolve! (car n*) engine env))
(set-cdr! n* (do-resolve! (cdr n*) engine env)))
(else
(error 'do-resolve "illegal argument" n*)))))
(define-method (do-resolve! (node <node>) engine env)
(if (ast-resolved? node)
node
(let ((body (slot-ref node 'body))
(options (slot-ref node 'options))
(parent (slot-ref node 'parent))
(unresolved? (*unresolved*)))
(with-debug 5 'do-resolve<body>
(debug-item "body=" body)
(parameterize ((*unresolved* #f))
(when (eq? parent 'unspecified)
(let ((p (assq 'parent env)))
(slot-set! node 'parent
(and (pair? p) (pair? (cdr p)) (cadr p)))
(when (pair? options)
(debug-item "unresolved options=" options)
(for-each (lambda (o)
(set-car! (cdr o)
(do-resolve! (cadr o) engine env)))
options)
(debug-item "resolved options=" options))))
(slot-set! node 'body (do-resolve! body engine env))
(slot-set! node 'resolved? (not (*unresolved*))))
(*unresolved* (or unresolved? (not (ast-resolved? node))))
node))))
(define-method (do-resolve! (node <container>) engine env0)
(let ((body (slot-ref node 'body))
(options (slot-ref node 'options))
(env (slot-ref node 'env))
(parent (slot-ref node 'parent)))
(with-debug 5 'do-resolve<container>
(debug-item "markup=" (markup-markup node))
(debug-item "body=" body)
(debug-item "env0=" env0)
(debug-item "env=" env)
(when (eq? parent 'unspecified)
(let ((p (assq 'parent env0)))
(slot-set! node 'parent (and (pair? p) (pair? (cdr p)) (cadr p)))
(when (pair? options)
(let ((e (append `((parent ,node)) env0)))
(debug-item "unresolved options=" options)
(for-each (lambda (o)
(set-car! (cdr o)
(do-resolve! (cadr o) engine e)))
options)
(debug-item "resolved options=" options)))))
(let ((e `((parent ,node) ,@env ,@env0)))
(slot-set! node 'body (do-resolve! body engine e)))
node)))
(define-method (do-resolve! (node <document>) engine env0)
(next-method)
;; resolve the engine custom
(let ((env (append `((parent ,node)) env0)))
(for-each (lambda (c)
(let ((i (car c))
(a (cadr c)))
(debug-item "custom=" i " " a)
(set-car! (cdr c) (do-resolve! a engine env))))
(slot-ref engine 'customs)))
node)
(define-method (do-resolve! (node <unresolved>) engine env)
(with-debug 5 'do-resolve<unresolved>
(debug-item "node=" node)
(let ((p (assq 'parent env)))
(slot-set! node 'parent (and (pair? p) (pair? (cdr p)) (cadr p))))
(let* ((proc (slot-ref node 'proc))
(res (proc node engine env))
(loc (ast-loc node)))
(when (ast? res)
(ast-loc-set! res loc))
(debug-item "res=" res)
(*unresolved* #t)
res)))
(define-method (do-resolve! (node <handle>) engine env)
node)
;;;; ======================================================================
;;;;
;;;; RESOLVE-PARENT
;;;;
;;;; ======================================================================
(define (resolve-parent n e)
(with-debug 5 'resolve-parent
(debug-item "n=" n)
(cond
((not (is-a? n <ast>))
(let ((c (assq 'parent e)))
(if (pair? c)
(cadr c)
n)))
((eq? (slot-ref n 'parent) 'unspecified)
(skribe-error 'resolve-parent "orphan node" n))
(else
(slot-ref n 'parent)))))
;;;; ======================================================================
;;;;
;;;; RESOLVE-SEARCH-PARENT
;;;;
;;;; ======================================================================
(define (resolve-search-parent n e pred)
(with-debug 5 'resolve-search-parent
(debug-item "node=" n)
(debug-item "searching=" pred)
(let ((p (resolve-parent n e)))
(debug-item "parent=" p " "
(if (is-a? p 'markup) (slot-ref p 'markup) "???"))
(cond
((pred p) p)
((is-a? p <unresolved>) p)
((not p) #f)
(else (resolve-search-parent p e pred))))))
;;;; ======================================================================
;;;;
;;;; RESOLVE-COUNTER
;;;;
;;;; ======================================================================
;;FIXME: factoriser
(define (resolve-counter n e cnt val . opt)
(let ((c (assq (symbol-append cnt '-counter) e)))
(if (not (pair? c))
(if (or (null? opt) (not (car opt)) (null? e))
(skribe-error cnt "orphan node" n)
(begin
(set-cdr! (last-pair e)
(list (list (symbol-append cnt '-counter) 0)
(list (symbol-append cnt '-env) '())))
(resolve-counter n e cnt val)))
(let* ((num (cadr c))
(nval (if (integer? val)
val
(+ 1 num))))
(let ((c2 (assq (symbol-append cnt '-env) e)))
(set-car! (cdr c2) (cons (resolve-parent n e) (cadr c2))))
(cond
((integer? val)
(set-car! (cdr c) val)
(car val))
((not val)
val)
(else
(set-car! (cdr c) (+ 1 num))
(+ 1 num)))))))
;;;; ======================================================================
;;;;
;;;; RESOLVE-IDENT
;;;;
;;;; ======================================================================
(define (resolve-ident ident markup n e)
(with-debug 4 'resolve-ident
(debug-item "ident=" ident)
(debug-item "markup=" markup)
(debug-item "n=" (if (markup? n) (markup-markup n) n))
(if (not (string? ident))
(skribe-type-error 'resolve-ident
"Illegal ident"
ident
"string")
(let ((mks (find-markups ident)))
(and mks
(if (not markup)
(car mks)
(let loop ((mks mks))
(cond
((null? mks)
#f)
((is-markup? (car mks) markup)
(car mks))
(else
(loop (cdr mks)))))))))))
|
