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Revision 1.15 - (show annotations)
Sat Feb 9 18:47:05 2008 UTC (6 years, 2 months ago) by heller
Branch: MAIN
Changes since 1.14: +5 -8 lines
Drop the first return value of emacs-inspect.

* swank.lisp (emacs-inspect): Drop the first return value. It
wasn't used anymore.  Update all methods and callers.
1 ;;;
2 ;;; swank-corman.lisp --- Corman Lisp specific code for SLIME.
3 ;;;
4 ;;; Copyright (C) 2004, 2005 Espen Wiborg (espenhw@grumblesmurf.org)
5 ;;;
6 ;;; License
7 ;;; =======
8 ;;; This software is provided 'as-is', without any express or implied
9 ;;; warranty. In no event will the author be held liable for any damages
10 ;;; arising from the use of this software.
11 ;;;
12 ;;; Permission is granted to anyone to use this software for any purpose,
13 ;;; including commercial applications, and to alter it and redistribute
14 ;;; it freely, subject to the following restrictions:
15 ;;;
16 ;;; 1. The origin of this software must not be misrepresented; you must
17 ;;; not claim that you wrote the original software. If you use this
18 ;;; software in a product, an acknowledgment in the product documentation
19 ;;; would be appreciated but is not required.
20 ;;;
21 ;;; 2. Altered source versions must be plainly marked as such, and must
22 ;;; not be misrepresented as being the original software.
23 ;;;
24 ;;; 3. This notice may not be removed or altered from any source
25 ;;; distribution.
26 ;;;
27 ;;; Notes
28 ;;; =====
29 ;;; You will need CCL 2.51, and you will *definitely* need to patch
30 ;;; CCL with the patches at
31 ;;; http://www.grumblesmurf.org/lisp/corman-patches, otherwise SLIME
32 ;;; will blow up in your face. You should also follow the
33 ;;; instructions on http://www.grumblesmurf.org/lisp/corman-slime.
34 ;;;
35 ;;; The only communication style currently supported is NIL.
36 ;;;
37 ;;; Starting CCL inside emacs (with M-x slime) seems to work for me
38 ;;; with Corman Lisp 2.51, but I have seen random failures with 2.5
39 ;;; (sometimes it works, other times it hangs on start or hangs when
40 ;;; initializing WinSock) - starting CCL externally and using M-x
41 ;;; slime-connect always works fine.
42 ;;;
43 ;;; Sometimes CCL gets confused and starts giving you random memory
44 ;;; access violation errors on startup; if this happens, try redumping
45 ;;; your image.
46 ;;;
47 ;;; What works
48 ;;; ==========
49 ;;; * Basic editing and evaluation
50 ;;; * Arglist display
51 ;;; * Compilation
52 ;;; * Loading files
53 ;;; * apropos/describe
54 ;;; * Debugger
55 ;;; * Inspector
56 ;;;
57 ;;; TODO
58 ;;; ====
59 ;;; * More debugger functionality (missing bits: restart-frame,
60 ;;; return-from-frame, disassemble-frame, activate-stepping,
61 ;;; toggle-trace)
62 ;;; * XREF
63 ;;; * Profiling
64 ;;; * More sophisticated communication styles than NIL
65 ;;;
66
67 (in-package :swank-backend)
68
69 ;;; Pull in various needed bits
70 (require :composite-streams)
71 (require :sockets)
72 (require :winbase)
73 (require :lp)
74
75 (use-package :gs)
76
77 ;; MOP stuff
78
79 (defclass swank-mop:standard-slot-definition ()
80 ()
81 (:documentation "Dummy class created so that swank.lisp will compile and load."))
82
83 (defun named-by-gensym-p (c)
84 (null (symbol-package (class-name c))))
85
86 (deftype swank-mop:eql-specializer ()
87 '(satisfies named-by-gensym-p))
88
89 (defun swank-mop:eql-specializer-object (specializer)
90 (with-hash-table-iterator (next-entry cl::*clos-singleton-specializers*)
91 (loop (multiple-value-bind (more key value)
92 (next-entry)
93 (unless more (return nil))
94 (when (eq specializer value)
95 (return key))))))
96
97 (defun swank-mop:class-finalized-p (class)
98 (declare (ignore class))
99 t)
100
101 (defun swank-mop:class-prototype (class)
102 (make-instance class))
103
104 (defun swank-mop:specializer-direct-methods (obj)
105 (declare (ignore obj))
106 nil)
107
108 (defun swank-mop:generic-function-argument-precedence-order (gf)
109 (generic-function-lambda-list gf))
110
111 (defun swank-mop:generic-function-method-combination (gf)
112 (declare (ignore gf))
113 :standard)
114
115 (defun swank-mop:generic-function-declarations (gf)
116 (declare (ignore gf))
117 nil)
118
119 (defun swank-mop:slot-definition-documentation (slot)
120 (declare (ignore slot))
121 (getf slot :documentation nil))
122
123 (defun swank-mop:slot-definition-type (slot)
124 (declare (ignore slot))
125 t)
126
127 (import-swank-mop-symbols :cl '(;; classes
128 :standard-slot-definition
129 :eql-specializer
130 :eql-specializer-object
131 ;; standard class readers
132 :class-default-initargs
133 :class-direct-default-initargs
134 :class-finalized-p
135 :class-prototype
136 :specializer-direct-methods
137 ;; gf readers
138 :generic-function-argument-precedence-order
139 :generic-function-declarations
140 :generic-function-method-combination
141 ;; method readers
142 ;; slot readers
143 :slot-definition-documentation
144 :slot-definition-type))
145
146 ;;;; swank implementations
147
148 ;;; Debugger
149
150 (defvar *stack-trace* nil)
151 (defvar *frame-trace* nil)
152
153 (defstruct frame
154 name function address debug-info variables)
155
156 (defimplementation call-with-debugging-environment (fn)
157 (let* ((real-stack-trace (cl::stack-trace))
158 (*stack-trace* (cdr (member 'cl:invoke-debugger real-stack-trace
159 :key #'car)))
160 (*frame-trace*
161 (let* ((db::*debug-level* (1+ db::*debug-level*))
162 (db::*debug-frame-pointer* (db::stash-ebp
163 (ct:create-foreign-ptr)))
164 (db::*debug-max-level* (length real-stack-trace))
165 (db::*debug-min-level* 1))
166 (cdr (member #'cl:invoke-debugger
167 (cons
168 (make-frame :function nil)
169 (loop for i from db::*debug-min-level*
170 upto db::*debug-max-level*
171 until (eq (db::get-frame-function i) cl::*top-level*)
172 collect
173 (make-frame :function (db::get-frame-function i)
174 :address (db::get-frame-address i))))
175 :key #'frame-function)))))
176 (funcall fn)))
177
178 (defimplementation compute-backtrace (start end)
179 (subseq *stack-trace* start (min end (length *stack-trace*))))
180
181 (defimplementation print-frame (frame stream)
182 (format stream "~S" frame))
183
184 (defun get-frame-debug-info (frame)
185 (or (frame-debug-info frame)
186 (setf (frame-debug-info frame)
187 (db::prepare-frame-debug-info (frame-function frame)
188 (frame-address frame)))))
189
190 (defimplementation frame-locals (frame-number)
191 (let* ((frame (elt *frame-trace* frame-number))
192 (info (get-frame-debug-info frame)))
193 (let ((var-list
194 (loop for i from 4 below (length info) by 2
195 collect `(list :name ',(svref info i) :id 0
196 :value (db::debug-filter ,(svref info i))))))
197 (let ((vars (eval-in-frame `(list ,@var-list) frame-number)))
198 (setf (frame-variables frame) vars)))))
199
200 (defimplementation eval-in-frame (form frame-number)
201 (let ((frame (elt *frame-trace* frame-number)))
202 (let ((cl::*compiler-environment* (get-frame-debug-info frame)))
203 (eval form))))
204
205 (defimplementation frame-catch-tags (index)
206 (declare (ignore index))
207 nil)
208
209 (defimplementation frame-var-value (frame-number var)
210 (let ((vars (frame-variables (elt *frame-trace* frame-number))))
211 (when vars
212 (second (elt vars var)))))
213
214 (defimplementation frame-source-location-for-emacs (frame-number)
215 (fspec-location (frame-function (elt *frame-trace* frame-number))))
216
217 (defun break (&optional (format-control "Break") &rest format-arguments)
218 (with-simple-restart (continue "Return from BREAK.")
219 (let ();(*debugger-hook* nil))
220 (let ((condition
221 (make-condition 'simple-condition
222 :format-control format-control
223 :format-arguments format-arguments)))
224 ;;(format *debug-io* ";;; User break: ~A~%" condition)
225 (invoke-debugger condition))))
226 nil)
227
228 ;;; Socket communication
229
230 (defimplementation create-socket (host port)
231 (sockets:start-sockets)
232 (sockets:make-server-socket :host host :port port))
233
234 (defimplementation local-port (socket)
235 (sockets:socket-port socket))
236
237 (defimplementation close-socket (socket)
238 (close socket))
239
240 (defimplementation accept-connection (socket
241 &key external-format buffering timeout)
242 (declare (ignore buffering timeout external-format))
243 (sockets:make-socket-stream (sockets:accept-socket socket)))
244
245 ;;; Misc
246
247 (defimplementation preferred-communication-style ()
248 nil)
249
250 (defimplementation getpid ()
251 ccl:*current-process-id*)
252
253 (defimplementation lisp-implementation-type-name ()
254 "cormanlisp")
255
256 (defimplementation quit-lisp ()
257 (sockets:stop-sockets)
258 (win32:exitprocess 0))
259
260 (defimplementation set-default-directory (directory)
261 (setf (ccl:current-directory) directory)
262 (directory-namestring (setf *default-pathname-defaults*
263 (truename (merge-pathnames directory)))))
264
265 (defimplementation default-directory ()
266 (directory-namestring (ccl:current-directory)))
267
268 (defimplementation macroexpand-all (form)
269 (ccl:macroexpand-all form))
270
271 ;;; Documentation
272
273 (defun fspec-location (fspec)
274 (when (symbolp fspec)
275 (setq fspec (symbol-function fspec)))
276 (let ((file (ccl::function-source-file fspec)))
277 (if file
278 (handler-case
279 (let ((truename (truename
280 (merge-pathnames file
281 ccl:*cormanlisp-directory*))))
282 (make-location (list :file (namestring truename))
283 (if (ccl::function-source-line fspec)
284 (list :line
285 (1+ (ccl::function-source-line fspec)))
286 (list :function-name (princ-to-string
287 (function-name fspec))))))
288 (error (c) (list :error (princ-to-string c))))
289 (list :error (format nil "No source information available for ~S"
290 fspec)))))
291
292 (defimplementation find-definitions (name)
293 (list (list name (fspec-location name))))
294
295 (defimplementation arglist (name)
296 (handler-case
297 (cond ((and (symbolp name)
298 (macro-function name))
299 (ccl::macro-lambda-list (symbol-function name)))
300 (t
301 (when (symbolp name)
302 (setq name (symbol-function name)))
303 (if (eq (class-of name) cl::the-class-standard-gf)
304 (generic-function-lambda-list name)
305 (ccl:function-lambda-list name))))
306 (error () :not-available)))
307
308 (defimplementation function-name (fn)
309 (handler-case (getf (cl::function-info-list fn) 'cl::function-name)
310 (error () nil)))
311
312 (defimplementation describe-symbol-for-emacs (symbol)
313 (let ((result '()))
314 (flet ((doc (kind &optional (sym symbol))
315 (or (documentation sym kind) :not-documented))
316 (maybe-push (property value)
317 (when value
318 (setf result (list* property value result)))))
319 (maybe-push
320 :variable (when (boundp symbol)
321 (doc 'variable)))
322 (maybe-push
323 :function (if (fboundp symbol)
324 (doc 'function)))
325 (maybe-push
326 :class (if (find-class symbol nil)
327 (doc 'class)))
328 result)))
329
330 (defimplementation describe-definition (symbol namespace)
331 (ecase namespace
332 (:variable
333 (describe symbol))
334 ((:function :generic-function)
335 (describe (symbol-function symbol)))
336 (:class
337 (describe (find-class symbol)))))
338
339 ;;; Compiler
340
341 (defvar *buffer-name* nil)
342 (defvar *buffer-position*)
343 (defvar *buffer-string*)
344 (defvar *compile-filename* nil)
345
346 ;; FIXME
347 (defimplementation call-with-compilation-hooks (FN)
348 (handler-bind ((error (lambda (c)
349 (signal (make-condition
350 'compiler-condition
351 :original-condition c
352 :severity :warning
353 :message (format nil "~A" c)
354 :location
355 (cond (*buffer-name*
356 (make-location
357 (list :buffer *buffer-name*)
358 (list :position *buffer-position*)))
359 (*compile-filename*
360 (make-location
361 (list :file *compile-filename*)
362 (list :position 1)))
363 (t
364 (list :error "No location"))))))))
365 (funcall fn)))
366
367 (defimplementation swank-compile-file (*compile-filename* load-p
368 external-format)
369 (declare (ignore external-format))
370 (with-compilation-hooks ()
371 (let ((*buffer-name* nil))
372 (compile-file *compile-filename*)
373 (when load-p
374 (load (compile-file-pathname *compile-filename*))))))
375
376 (defimplementation swank-compile-string (string &key buffer position directory)
377 (declare (ignore directory))
378 (with-compilation-hooks ()
379 (let ((*buffer-name* buffer)
380 (*buffer-position* position)
381 (*buffer-string* string))
382 (funcall (compile nil (read-from-string
383 (format nil "(~S () ~A)" 'lambda string)))))))
384
385 ;;;; Inspecting
386
387 ;; Hack to make swank.lisp load, at least
388 (defclass file-stream ())
389
390 (defun comma-separated (list &optional (callback (lambda (v)
391 `(:value ,v))))
392 (butlast (loop for e in list
393 collect (funcall callback e)
394 collect ", ")))
395
396 (defmethod emacs-inspect ((class standard-class))
397 `("Name: " (:value ,(class-name class))
398 (:newline)
399 "Super classes: "
400 ,@(comma-separated (swank-mop:class-direct-superclasses class))
401 (:newline)
402 "Direct Slots: "
403 ,@(comma-separated
404 (swank-mop:class-direct-slots class)
405 (lambda (slot)
406 `(:value ,slot ,(princ-to-string (swank-mop:slot-definition-name slot)))))
407 (:newline)
408 "Effective Slots: "
409 ,@(if (swank-mop:class-finalized-p class)
410 (comma-separated
411 (swank-mop:class-slots class)
412 (lambda (slot)
413 `(:value ,slot ,(princ-to-string
414 (swank-mop:slot-definition-name slot)))))
415 '("#<N/A (class not finalized)>"))
416 (:newline)
417 ,@(when (documentation class t)
418 `("Documentation:" (:newline) ,(documentation class t) (:newline)))
419 "Sub classes: "
420 ,@(comma-separated (swank-mop:class-direct-subclasses class)
421 (lambda (sub)
422 `(:value ,sub ,(princ-to-string (class-name sub)))))
423 (:newline)
424 "Precedence List: "
425 ,@(if (swank-mop:class-finalized-p class)
426 (comma-separated (swank-mop:class-precedence-list class)
427 (lambda (class)
428 `(:value ,class ,(princ-to-string (class-name class)))))
429 '("#<N/A (class not finalized)>"))
430 (:newline)))
431
432 (defmethod emacs-inspect ((slot cons))
433 ;; Inspects slot definitions
434 (if (eq (car slot) :name)
435 `("Name: " (:value ,(swank-mop:slot-definition-name slot))
436 (:newline)
437 ,@(when (swank-mop:slot-definition-documentation slot)
438 `("Documentation:" (:newline)
439 (:value ,(swank-mop:slot-definition-documentation slot))
440 (:newline)))
441 "Init args: " (:value ,(swank-mop:slot-definition-initargs slot)) (:newline)
442 "Init form: " ,(if (swank-mop:slot-definition-initfunction slot)
443 `(:value ,(swank-mop:slot-definition-initform slot))
444 "#<unspecified>") (:newline)
445 "Init function: " (:value ,(swank-mop:slot-definition-initfunction slot))
446 (:newline))
447 (call-next-method)))
448
449 (defmethod emacs-inspect ((pathname pathnames::pathname-internal))
450 (list* (if (wild-pathname-p pathname)
451 "A wild pathname."
452 "A pathname.")
453 '(:newline)
454 (append (label-value-line*
455 ("Namestring" (namestring pathname))
456 ("Host" (pathname-host pathname))
457 ("Device" (pathname-device pathname))
458 ("Directory" (pathname-directory pathname))
459 ("Name" (pathname-name pathname))
460 ("Type" (pathname-type pathname))
461 ("Version" (pathname-version pathname)))
462 (unless (or (wild-pathname-p pathname)
463 (not (probe-file pathname)))
464 (label-value-line "Truename" (truename pathname))))))
465
466 (defmethod emacs-inspect ((o t))
467 (cond ((cl::structurep o) (inspect-structure o))
468 (t (call-next-method))))
469
470 (defun inspect-structure (o)
471 (let* ((template (cl::uref o 1))
472 (num-slots (cl::struct-template-num-slots template)))
473 (cond ((symbolp template)
474 (loop for i below num-slots
475 append (label-value-line i (cl::uref o (+ 2 i)))))
476 (t
477 (loop for i below num-slots
478 append (label-value-line (elt template (+ 6 (* i 5)))
479 (cl::uref o (+ 2 i))))))))
480
481
482 ;;; Threads
483
484 (require 'threads)
485
486 (defstruct (mailbox (:conc-name mailbox.))
487 thread
488 (lock (make-instance 'threads:critical-section))
489 (queue '() :type list))
490
491 (defvar *mailbox-lock* (make-instance 'threads:critical-section))
492 (defvar *mailboxes* (list))
493
494 (defmacro with-lock (lock &body body)
495 `(threads:with-synchronization (threads:cs ,lock)
496 ,@body))
497
498 (defimplementation spawn (fun &key name)
499 (declare (ignore name))
500 (th:create-thread
501 (lambda ()
502 (handler-bind ((serious-condition #'invoke-debugger))
503 (unwind-protect (funcall fun)
504 (with-lock *mailbox-lock*
505 (setq *mailboxes* (remove cormanlisp:*current-thread-id*
506 *mailboxes* :key #'mailbox.thread))))))))
507
508 (defimplementation thread-id (thread)
509 thread)
510
511 (defimplementation find-thread (thread)
512 (if (thread-alive-p thread)
513 thread))
514
515 (defimplementation thread-alive-p (thread)
516 (if (threads:thread-handle thread) t nil))
517
518 (defimplementation current-thread ()
519 cormanlisp:*current-thread-id*)
520
521 ;; XXX implement it
522 (defimplementation all-threads ()
523 '())
524
525 ;; XXX something here is broken
526 (defimplementation kill-thread (thread)
527 (threads:terminate-thread thread 'killed))
528
529 (defun mailbox (thread)
530 (with-lock *mailbox-lock*
531 (or (find thread *mailboxes* :key #'mailbox.thread)
532 (let ((mb (make-mailbox :thread thread)))
533 (push mb *mailboxes*)
534 mb))))
535
536 (defimplementation send (thread message)
537 (let ((mbox (mailbox thread)))
538 (with-lock (mailbox.lock mbox)
539 (setf (mailbox.queue mbox)
540 (nconc (mailbox.queue mbox) (list message))))))
541
542 (defimplementation receive ()
543 (let ((mbox (mailbox cormanlisp:*current-thread-id*)))
544 (loop
545 (with-lock (mailbox.lock mbox)
546 (when (mailbox.queue mbox)
547 (return (pop (mailbox.queue mbox)))))
548 (sleep 0.1))))
549
550
551 ;;; This is probably not good, but it WFM
552 (in-package :common-lisp)
553
554 (defvar *old-documentation* #'documentation)
555 (defun documentation (thing &optional (type 'function))
556 (if (symbolp thing)
557 (funcall *old-documentation* thing type)
558 (values)))
559
560 (defmethod print-object ((restart restart) stream)
561 (if (or *print-escape*
562 *print-readably*)
563 (print-unreadable-object (restart stream :type t :identity t)
564 (princ (restart-name restart) stream))
565 (when (functionp (restart-report-function restart))
566 (funcall (restart-report-function restart) stream))))

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