1 ;;;; Replicate much of the ACL toplevel functionality in SBCL. Mostly
2 ;;;; this is portable code, but fundamentally it all hangs from a few
3 ;;;; SBCL-specific hooks like SB-INT:*REPL-READ-FUN* and
4 ;;;; SB-INT:*REPL-PROMPT-FUN*.
6 ;;;; The documentation, which may or may not apply in its entirety at
7 ;;;; any given time, for this functionality is on the ACL website:
8 ;;;; <http://www.franz.com/support/documentation/6.2/doc/top-level.htm>.
10 (cl:in-package
:sb-aclrepl
)
13 (input nil
) ; input, maybe a string or form
14 (func nil
) ; cmd func entered, overloaded
15 ; (:eof :null-cmd :cmd-error :history-error)
16 (args nil
) ; args for cmd func
17 (hnum nil
)) ; history number
21 (defstruct cmd-table-entry
22 (name nil
) ; name of command
23 (func nil
) ; function handler
24 (desc nil
) ; short description
25 (parsing nil
) ; (:string :case-sensitive nil)
26 (group nil
) ; command group (:cmd or :alias)
27 (abbr-len 0)) ; abbreviation length
29 (eval-when (:compile-toplevel
:load-toplevel
:execute
)
30 (defparameter *default-prompt
*
31 "~:[~3*~;[~:*~D~:[~;~:*:~D~]~:[~;i~]~:[~;c~]] ~]~A(~D): "
32 "The default prompt."))
33 (defparameter *prompt
* #.
*default-prompt
*
34 "The current prompt string or formatter function.")
35 (defparameter *use-short-package-name
* t
36 "when T, use the shortnest package nickname in a prompt")
37 (defparameter *dir-stack
* nil
38 "The top-level directory stack")
39 (defparameter *command-char
* #\
:
40 "Prefix character for a top-level command")
41 (defvar *max-history
* 100
42 "Maximum number of history commands to remember")
43 (defvar *exit-on-eof
* t
44 "If T, then exit when the EOF character is entered.")
45 (defparameter *history
* nil
47 (defparameter *cmd-number
* 1
48 "Number of the next command")
53 (declaim (type list
*history
*))
55 (defvar *eof-marker
* :eof
)
56 (defvar *eof-cmd
* (make-user-cmd :func
:eof
))
57 (defvar *null-cmd
* (make-user-cmd :func
:null-cmd
))
59 (defparameter *cmd-table-hash
*
60 (make-hash-table :size
30 :test
#'equal
))
62 (defun prompt-package-name ()
63 (if *use-short-package-name
*
65 (package-nicknames cl
:*package
*)
66 (list (package-name cl
:*package
*)))
67 (lambda (a b
) (< (length a
) (length b
)))))
68 (package-name cl
:*package
*)))
70 (defun read-cmd (input-stream)
71 ;; Reads a command from the user and returns a user-cmd object
72 (let* ((next-char (peek-char-non-whitespace input-stream
))
74 ((eql *command-char
* next-char
)
75 (dispatch-command-line input-stream
))
76 ((eql #\newline next-char
)
77 (read-char input-stream
)
82 (let* ((eof (cons nil
*eof-marker
*))
83 (form (read input-stream nil eof
)))
86 (make-user-cmd :input form
:func nil
:hnum
*cmd-number
*)))))))
87 (if (and (eq cmd
*eof-cmd
*) (typep input-stream
'string-stream
))
88 (throw 'repl-catcher cmd
)
91 (defun dispatch-command-line (input-stream)
92 "Processes an input line that starts with *command-char*"
93 (let* ((line (string-trim-whitespace (read-line input-stream
)))
94 (first-space-pos (position #\space line
))
95 (cmd-string (subseq line
1 first-space-pos
))
98 (string-trim-whitespace (subseq line first-space-pos
))
100 (declare (simple-string line
))
102 ((or (zerop (length cmd-string
))
103 (whitespace-char-p (char cmd-string
0)))
105 ((or (numberp (read-from-string cmd-string
))
106 (char= (char cmd-string
0) #\
+)
107 (char= (char cmd-string
0) #\-
))
108 (process-cmd-numeric cmd-string cmd-args-string
))
109 ((char= (char cmd-string
0) *command-char
*)
110 (process-history-search (subseq cmd-string
1) cmd-args-string
))
112 (process-cmd-text cmd-string line cmd-args-string
)))))
114 (defun process-cmd-numeric (cmd-string cmd-args-string
)
115 "Process a numeric cmd, such as ':123'"
116 (let* ((first-char (char cmd-string
0))
117 (number-string (if (digit-char-p first-char
)
119 (subseq cmd-string
1)))
120 (is-minus (char= first-char
#\-
))
121 (raw-number (read-from-string number-string
))
123 (- *cmd-number
* raw-number
)
125 (cmd (get-history number
)))
126 (when (eq cmd
*null-cmd
*)
127 (return-from process-cmd-numeric
128 (make-user-cmd :func
:history-error
:input
(read-from-string
130 (maybe-return-history-cmd cmd cmd-args-string
)))
132 (defun maybe-return-history-cmd (cmd cmd-args-string
)
133 (format *output
* "~A~%" (user-cmd-input cmd
))
135 (when (and (stringp cmd-args-string
)
136 (plusp (length cmd-args-string
))
137 (char= #\? (char cmd-args-string
0)))
138 (do ((line nil
(read-line *input
*)))
139 ((and line
(or (zerop (length line
))
140 (string-equal line
"Y")
141 (string-equal line
"N")))
142 (when (string-equal line
"N")
145 (format *output
* "Type \"y\" for yes or \"n\" for no.~%"))
146 (format *output
* "redo? [y] ")
147 (force-output *output
*)))))
150 (make-user-cmd :func
(user-cmd-func cmd
)
151 :input
(user-cmd-input cmd
)
152 :args
(user-cmd-args cmd
)
153 :hnum
*cmd-number
*))))
156 (defun find-history-matching-pattern (cmd-string)
157 "Return history item matching cmd-string or NIL if not found"
158 (dolist (his *history
* nil
)
159 (let* ((input (user-cmd-input his
))
160 (string-input (if (stringp input
)
162 (write-to-string input
))))
163 (when (search cmd-string string-input
:test
#'string-equal
)
164 (return-from find-history-matching-pattern his
)))))
166 (defun process-history-search (pattern cmd-args-string
)
167 (let ((cmd (find-history-matching-pattern pattern
)))
169 (format *output
* "No match on history list with pattern ~S~%" pattern
)
170 (return-from process-history-search
*null-cmd
*))
171 (maybe-return-history-cmd cmd cmd-args-string
)))
174 (defun process-cmd-text (cmd-string line cmd-args-string
)
175 "Process a text cmd, such as ':ld a b c'"
176 (flet ((parse-args (parsing args-string
)
179 (if (zerop (length args-string
))
183 (let ((string-stream (make-string-input-stream args-string
))
184 (eof (cons nil
*eof-marker
*))) ;new cons for eq uniqueness
185 (loop as arg
= (read string-stream nil eof
)
188 (let ((cmd-entry (find-cmd cmd-string
)))
190 (return-from process-cmd-text
191 (make-user-cmd :func
:cmd-error
:input cmd-string
)))
192 (make-user-cmd :func
(cmd-table-entry-func cmd-entry
)
194 :args
(parse-args (cmd-table-entry-parsing cmd-entry
)
196 :hnum
*cmd-number
*))))
198 (defun make-cte (name-param func desc parsing group abbr-len
)
199 (let ((name (etypecase name-param
203 (string-downcase (write-to-string name-param
))))))
204 (make-cmd-table-entry :name name
:func func
:desc desc
205 :parsing parsing
:group group
206 :abbr-len
(if abbr-len
210 (defun %add-entry
(cmd &optional abbr-len
)
211 (let* ((name (cmd-table-entry-name cmd
))
215 (dotimes (i (length name
))
216 (when (>= i
(1- alen
))
217 (setf (gethash (subseq name
0 (1+ i
)) *cmd-table-hash
*)
220 (defun add-cmd-table-entry (cmd-string abbr-len func-name desc parsing
)
222 (make-cte cmd-string
(symbol-function func-name
) desc parsing
:cmd abbr-len
)
225 (defun find-cmd (cmdstr)
226 (gethash (string-downcase cmdstr
) *cmd-table-hash
*))
228 (defun user-cmd= (c1 c2
)
229 "Returns T if two user commands are equal"
230 (and (eq (user-cmd-func c1
) (user-cmd-func c2
))
231 (equal (user-cmd-args c1
) (user-cmd-args c2
))
232 (equal (user-cmd-input c1
) (user-cmd-input c2
))))
234 (defun add-to-history (cmd)
235 (unless (and *history
* (user-cmd= cmd
(car *history
*)))
236 (when (>= (length *history
*) *max-history
*)
237 (setq *history
* (nbutlast *history
*
238 (1+ (- (length *history
*) *max-history
*)))))
240 (incf *cmd-number
*)))
242 (defun get-history (n)
243 (let ((cmd (find n
*history
* :key
#'user-cmd-hnum
:test
#'eql
)))
248 (defun get-cmd-doc-list (&optional
(group :cmd
))
249 "Return list of all commands"
251 (maphash (lambda (k v
)
253 (= (length k
) (length (cmd-table-entry-name v
)))
254 (eq (cmd-table-entry-group v
) group
))
256 (if (= (cmd-table-entry-abbr-len v
)
259 (subseq k
0 (cmd-table-entry-abbr-len v
)))
260 (cmd-table-entry-desc v
)) cmds
)))
262 (sort cmds
#'string-lessp
:key
#'car
)))
264 (defun cd-cmd (&optional string-dir
)
266 ((or (zerop (length string-dir
))
267 (string= string-dir
"~"))
268 (setf cl
:*default-pathname-defaults
* (user-homedir-pathname)))
270 (let ((new (truename string-dir
)))
271 (when (pathnamep new
)
272 (setf cl
:*default-pathname-defaults
* new
)))))
273 (format *output
* "~A~%" (namestring cl
:*default-pathname-defaults
*))
277 (format *output
* "Lisp's current working directory is ~s.~%"
278 (namestring cl
:*default-pathname-defaults
*))
281 (defun trace-cmd (&rest args
)
283 (format *output
* "~A~%" (eval (sb-debug::expand-trace args
)))
284 (format *output
* "~A~%" (sb-debug::%list-traced-funs
)))
287 (defun untrace-cmd (&rest args
)
289 (format *output
* "~A~%"
291 (sb-int:collect
((res))
292 (let ((current args
))
294 (unless current
(return))
295 (let ((name (pop current
)))
296 (res (if (eq name
:function
)
297 `(sb-debug::untrace-1
,(pop current
))
298 `(sb-debug::untrace-1
',name
))))))
299 `(progn ,@(res) t
))))
300 (format *output
* "~A~%" (eval (sb-debug::untrace-all
))))
304 (defun all-threads ()
305 "Return a list of all threads"
306 (sb-thread:list-all-threads
))
309 (defun other-threads ()
310 "Returns a list of all threads except the current one"
311 (delete sb-thread
:*current-thread
* (all-threads)))
313 (defun exit-cmd (&optional
(status 0))
315 (let ((other-threads (other-threads)))
317 (format *output
* "There exists the following processes~%")
318 (format *output
* "~{~A~%~}" other-threads
)
319 (format *output
* "Do you want to exit lisp anyway [n]? ")
320 (force-output *output
*)
321 (let ((input (string-trim-whitespace (read-line *input
*))))
322 (if (and (plusp (length input
))
323 (or (char= #\y
(char input
0))
324 (char= #\Y
(char input
0))))
325 ;; loop in case more threads get created while trying to exit
326 (do ((threads other-threads
(other-threads)))
328 (map nil
#'sb-thread
:terminate-thread threads
)
330 (return-from exit-cmd
)))))
331 (sb-ext:exit
:code status
)
334 (defun package-cmd (&optional pkg
)
337 (format *output
* "The ~A package is current.~%"
338 (package-name cl
:*package
*)))
339 ((null (find-package (write-to-string pkg
)))
340 (format *output
* "Unknown package: ~A.~%" pkg
))
342 (setf cl
:*package
* (find-package (write-to-string pkg
)))))
345 (defun string-to-list-skip-spaces (str)
346 "Return a list of strings, delimited by spaces, skipping spaces."
347 (declare (type (or null string
) str
))
349 (loop for i
= 0 then
(1+ j
)
350 as j
= (position #\space str
:start i
)
351 when
(not (char= (char str i
) #\space
))
352 collect
(subseq str i j
) while j
)))
354 (let ((last-files-loaded nil
))
355 (defun ld-cmd (&optional string-files
)
357 (setq last-files-loaded string-files
)
358 (setq string-files last-files-loaded
))
359 (dolist (arg (string-to-list-skip-spaces string-files
))
361 (if (string= arg
"~/" :end1
1 :end2
1)
362 (merge-pathnames (parse-namestring
363 (string-left-trim "~/" arg
))
364 (user-homedir-pathname))
366 (format *output
* "loading ~S~%" file
)
370 (defun cf-cmd (string-files)
372 (dolist (arg (string-to-list-skip-spaces string-files
))
377 "Return if x and y are numbers, and x > y"
378 (and (numberp x
) (numberp y
) (> x y
)))
380 (defun newer-file-p (file1 file2
)
381 "Is file1 newer (written later than) file2?"
382 (>-num
(if (probe-file file1
) (file-write-date file1
))
383 (if (probe-file file2
) (file-write-date file2
))))
385 (defun compile-file-as-needed (src-path)
386 "Compiles a file if needed, returns path."
387 (let ((dest-path (compile-file-pathname src-path
)))
388 (when (or (not (probe-file dest-path
))
389 (newer-file-p src-path dest-path
))
390 (ensure-directories-exist dest-path
)
391 (compile-file src-path
:output-file dest-path
))
394 ;;;; implementation of commands
396 (defun apropos-cmd (string)
397 (apropos (string-upcase string
))
398 (fresh-line *output
*)
401 (let ((last-files-loaded nil
))
402 (defun cload-cmd (&optional string-files
)
404 (setq last-files-loaded string-files
)
405 (setq string-files last-files-loaded
))
406 (dolist (arg (string-to-list-skip-spaces string-files
))
407 (format *output
* "loading ~a~%" arg
)
408 (load (compile-file-as-needed arg
)))
411 (defun inspect-cmd (arg)
412 (inspector-fun (eval arg
) nil
*output
*)
415 (defun istep-cmd (&optional arg-string
)
416 (istep (string-to-list-skip-spaces arg-string
) *output
*)
419 (defun describe-cmd (&rest args
)
421 (eval `(describe ,arg
)))
424 (defun macroexpand-cmd (arg)
425 (pprint (macroexpand arg
) *output
*)
428 (defun history-cmd ()
429 (let ((n (length *history
*)))
433 (let ((hist (nth (- n i
1) *history
*)))
434 (format *output
* "~3A " (user-cmd-hnum hist
))
435 (if (stringp (user-cmd-input hist
))
436 (format *output
* "~A~%" (user-cmd-input hist
))
437 (format *output
* "~W~%" (user-cmd-input hist
))))))
440 (defun help-cmd (&optional cmd
)
443 (let ((cmd-entry (find-cmd cmd
)))
445 (format *output
* "Documentation for ~A: ~A~%"
446 (cmd-table-entry-name cmd-entry
)
447 (cmd-table-entry-desc cmd-entry
)))))
449 (format *output
* "~11A ~4A ~A~%" "COMMAND" "ABBR" "DESCRIPTION")
450 (format *output
* "~11A ~4A ~A~%" "<n>" ""
451 "re-execute <n>th history command")
452 (dolist (doc-entry (get-cmd-doc-list :cmd
))
453 (format *output
* "~11A ~4A ~A~%" (first doc-entry
)
454 (second doc-entry
) (third doc-entry
)))))
458 (let ((doc-entries (get-cmd-doc-list :alias
)))
459 (typecase doc-entries
461 (format *output
* "~11A ~A ~4A~%" "ALIAS" "ABBR" "DESCRIPTION")
462 (dolist (doc-entry doc-entries
)
463 (format *output
* "~11A ~4A ~A~%" (first doc-entry
) (second doc-entry
) (third doc-entry
))))
465 (format *output
* "No aliases are defined~%"))))
468 (defun shell-cmd (string-arg)
469 (sb-ext:run-program
"/bin/sh" (list "-c" string-arg
)
470 :input nil
:output
*output
*)
473 (defun pushd-cmd (string-arg)
474 (push string-arg
*dir-stack
*)
480 (let ((dir (pop *dir-stack
*)))
482 (format *output
* "No directory on stack to pop.~%"))
485 (defun pop-cmd (&optional
(n 1))
488 (throw 'repl-catcher
(values :inspect n
)))
489 ((plusp *break-level
*)
490 (throw 'repl-catcher
(values :pop n
))))
493 (defun bt-cmd (&optional
(n most-positive-fixnum
))
494 (sb-debug:print-backtrace
:count n
))
496 (defun current-cmd ()
497 (sb-debug::describe-debug-command
))
500 (sb-debug::frame-debug-command
0))
503 (sb-debug::bottom-debug-command
))
505 (defun up-cmd (&optional
(n 1))
507 (if (and sb-debug
::*current-frame
*
508 (sb-di:frame-up sb-debug
::*current-frame
*))
509 (sb-debug::up-debug-command
)
511 (format *output
* "Top of the stack")
512 (return-from up-cmd
)))))
514 (defun dn-cmd (&optional
(n 1))
516 (if (and sb-debug
::*current-frame
*
517 (sb-di:frame-down sb-debug
::*current-frame
*))
518 (sb-debug::down-debug-command
)
520 (format *output
* "Bottom of the stack")
521 (return-from dn-cmd
)))))
523 (defun continue-cmd (&optional
(num 0))
524 ;; don't look at first restart
525 (let ((restarts (compute-restarts)))
530 (if (< -
1 num
(length restarts
))
533 (format *output
* "There is no such restart")
534 (return-from continue-cmd
))))
536 (find num
(the list restarts
)
538 :test
(lambda (sym1 sym2
)
539 (string= (symbol-name sym1
)
540 (symbol-name sym2
)))))
542 (format *output
* "~S is invalid as a restart name" num
)
543 (return-from continue-cmd nil
)))))
545 (invoke-restart-interactively restart
)))
546 (format *output
* "~&There are no restarts"))))
549 (when (plusp *break-level
*)
551 (sb-debug::show-restarts
(compute-restarts) *output
*)
552 (let ((sb-debug::*debug-restarts
* (compute-restarts)))
553 (sb-debug::error-debug-command
)))))
556 (sb-debug::print-frame-call sb-debug
::*current-frame
* t
))
561 (defun local-cmd (&optional var
)
562 (declare (ignore var
))
563 (sb-debug::list-locals-debug-command
))
565 (defun processes-cmd ()
567 (dolist (thread (all-threads))
568 (format *output
* "~&~A" thread
)
569 (when (eq thread sb-thread
:*current-thread
*)
570 (format *output
* " [current listener]")))
572 (format *output
* "~&Threads are not supported in this version of sbcl")
575 (defun sb-aclrepl::kill-cmd
(&rest selected-threads
)
577 (dolist (thread selected-threads
)
578 (let ((found (find thread
(all-threads) :key
'sb-thread
:thread-name
582 (format *output
* "~&Destroying thread ~A" thread
)
583 (sb-thread:terminate-thread found
))
584 (format *output
* "~&Thread ~A not found" thread
))))
586 (declare (ignore selected-threads
))
588 (format *output
* "~&Threads are not supported in this version of sbcl")
591 (defun focus-cmd (&optional process
)
593 (declare (ignore process
))
596 (format *output
* "~&Focusing on next thread waiting waiting for the debugger~%"))
599 (sb-thread:release-foreground
)
602 (format *output
* "~&Threads are not supported in this version of sbcl")
606 (throw 'sb-impl
::toplevel-catcher nil
))
609 (dolist (dir *dir-stack
*)
610 (format *output
* "~a~%" dir
))
614 ;;;; dispatch table for commands
617 '(("aliases" 3 alias-cmd
"show aliases")
618 ("apropos" 2 apropos-cmd
"show apropos" :parsing
:string
)
619 ("bottom" 3 bottom-cmd
"move to bottom stack frame")
620 ("top" 3 top-cmd
"move to top stack frame")
621 ("bt" 2 bt-cmd
"backtrace `n' stack frames, default all")
622 ("up" 2 up-cmd
"move up `n' stack frames, default 1")
623 ("dn" 2 dn-cmd
"move down `n' stack frames, default 1")
624 ("cd" 2 cd-cmd
"change default diretory" :parsing
:string
)
625 ("ld" 2 ld-cmd
"load a file" :parsing
:string
)
626 ("cf" 2 cf-cmd
"compile file" :parsing
:string
)
627 ("cload" 2 cload-cmd
"compile if needed and load file"
629 ("current" 3 current-cmd
"print the expression for the current stack frame")
630 ("continue" 4 continue-cmd
"continue from a continuable error")
631 ("describe" 2 describe-cmd
"describe an object")
632 ("macroexpand" 2 macroexpand-cmd
"macroexpand an expression")
633 ("package" 2 package-cmd
"change current package")
634 ("error" 3 error-cmd
"print the last error message")
635 ("exit" 2 exit-cmd
"exit sbcl")
636 ("frame" 2 frame-cmd
"print info about the current frame")
637 ("help" 2 help-cmd
"print this help")
638 ("history" 3 history-cmd
"print the recent history")
639 ("inspect" 2 inspect-cmd
"inspect an object")
640 ("istep" 1 istep-cmd
"navigate within inspection of a lisp object" :parsing
:string
)
641 #+sb-thread
("kill" 2 kill-cmd
"kill (destroy) processes")
642 #+sb-thread
("focus" 2 focus-cmd
"focus the top level on a process")
643 ("local" 3 local-cmd
"print the value of a local variable")
644 ("pwd" 3 pwd-cmd
"print current directory")
645 ("pushd" 2 pushd-cmd
"push directory on stack" :parsing
:string
)
646 ("pop" 3 pop-cmd
"pop up `n' (default 1) break levels")
647 ("popd" 4 popd-cmd
"pop directory from stack")
648 #+sb-thread
("processes" 3 processes-cmd
"list all processes")
649 ("reset" 3 reset-cmd
"reset to top break level")
650 ("trace" 2 trace-cmd
"trace a function")
651 ("untrace" 4 untrace-cmd
"untrace a function")
652 ("dirs" 2 dirs-cmd
"show directory stack")
653 ("shell" 2 shell-cmd
"execute a shell cmd" :parsing
:string
)
654 ("zoom" 2 zoom-cmd
"print the runtime stack")
656 (dolist (cmd cmd-table
)
657 (destructuring-bind (cmd-string abbr-len func-name desc
&key parsing
) cmd
658 (add-cmd-table-entry cmd-string abbr-len func-name desc parsing
))))
660 ;;;; machinery for aliases
662 (defsetf alias
(name &key abbr-len description
) (user-func)
665 (make-cte (quote ,name
) ,user-func
,description nil
:alias
,abbr-len
))
668 (defmacro alias
(name-param args
&rest body
)
672 (name (if (atom name-param
)
675 (when (consp name-param
)
676 (dolist (param (cdr name-param
))
679 (eq param
:case-sensitive
)
681 (setq parsing param
))
685 (setq abbr-index param
)))))
688 (make-cte (quote ,name
) (lambda ,args
,@body
) ,desc
,parsing
:alias
(when ,abbr-index
694 (defun remove-alias (&rest aliases
)
695 (declare (list aliases
))
697 (remove-all (not (null (find :all aliases
)))))
698 (unless remove-all
;; ensure all alias are strings
700 (loop for alias in aliases
706 (symbol-name alias
))))))
709 (when (eq (cmd-table-entry-group cmd
) :alias
)
714 (let ((klen (length key
)))
715 (and (>= (length alias
) klen
)
716 (string-equal (subseq alias
0 klen
)
717 (subseq key
0 klen
)))))
722 (remhash key
*cmd-table-hash
*))
725 ;;;; low-level reading/parsing functions
727 ;;; Skip white space (but not #\NEWLINE), and peek at the next
729 (defun peek-char-non-whitespace (&optional stream
)
730 (do ((char (peek-char nil stream nil
*eof-marker
*)
731 (peek-char nil stream nil
*eof-marker
*)))
732 ((not (whitespace-char-not-newline-p char
)) char
)
735 (defun string-trim-whitespace (str)
736 (string-trim '(#\space
#\tab
#\return
)
739 (defun whitespace-char-p (x)
741 (or (char= x
#\space
)
745 (char= x
#\return
))))
747 (defun whitespace-char-not-newline-p (x)
748 (and (whitespace-char-p x
)
749 (not (char= x
#\newline
))))
751 ;;;; linking into SBCL hooks
753 (defun repl-prompt-fun (stream)
754 (let ((break-level (when (plusp *break-level
*)
756 (frame-number (when (and (plusp *break-level
*)
757 sb-debug
::*current-frame
*)
758 (sb-di::frame-number sb-debug
::*current-frame
*))))
759 (sb-thread::get-foreground
)
761 (if (functionp *prompt
*)
762 (write-string (funcall *prompt
*
767 (prompt-package-name) *cmd-number
*)
775 (prompt-package-name) *cmd-number
*)
777 (format stream
"~&Prompt error> "))
779 (format stream
"~A" prompt
))))))
781 (defun process-cmd (user-cmd)
782 ;; Processes a user command. Returns t if the user-cmd was a top-level
784 (cond ((eq user-cmd
*eof-cmd
*)
787 (format *output
* "EOF~%")
789 ((eq user-cmd
*null-cmd
*)
791 ((eq (user-cmd-func user-cmd
) :cmd-error
)
792 (format *output
* "Unknown top-level command: ~s.~%"
793 (user-cmd-input user-cmd
))
794 (format *output
* "Type `~Ahelp' for the list of commands.~%" *command-char
*)
796 ((eq (user-cmd-func user-cmd
) :history-error
)
797 (format *output
* "Input numbered ~d is not on the history list~%"
798 (user-cmd-input user-cmd
))
800 ((functionp (user-cmd-func user-cmd
))
801 (add-to-history user-cmd
)
802 (apply (user-cmd-func user-cmd
) (user-cmd-args user-cmd
))
806 (add-to-history user-cmd
)
807 nil
))) ; nope, not in my job description
809 (defun repl-read-form-fun (input output
)
810 ;; Pick off all the leading ACL magic commands, then return a normal
812 (let ((*input
* input
)
814 (loop for user-cmd
= (read-cmd *input
*) do
815 (if (process-cmd user-cmd
)
817 (funcall sb-int
:*repl-prompt-fun
* *output
*)
818 (force-output *output
*))
819 (return (user-cmd-input user-cmd
))))))
822 (setf sb-int
:*repl-prompt-fun
* #'repl-prompt-fun
823 sb-int
:*repl-read-form-fun
* #'repl-read-form-fun
)
825 (defmacro with-new-repl-state
((&rest vars
) &body forms
)
826 (let ((gvars (mapcar (lambda (var) (gensym (symbol-name var
))) vars
)))
827 `(let (,@(mapcar (lambda (var gvar
) `(,gvar
,var
)) vars gvars
))
829 (let ((*noprint
* noprint
))
830 (let (,@(mapcar (lambda (var gvar
) `(,var
,gvar
)) vars gvars
))
833 ,@(mapcar (lambda (var gvar
) `(setf ,gvar
,var
))
836 (defun make-repl-fun ()
837 (with-new-repl-state (*break-level
* *inspect-break
* *continuable-break
*
838 *dir-stack
* *command-char
* *prompt
*
839 *use-short-package-name
* *max-history
* *exit-on-eof
*
840 *history
* *cmd-number
*)
841 (repl :noprint noprint
:break-level
0)))
843 (when (boundp 'sb-impl
::*repl-fun-generator
*)
844 (setq sb-impl
::*repl-fun-generator
* #'make-repl-fun
))