Commit | Line | Data |
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55535639 | 1 | ;;; cmuscheme.el --- Scheme process in a buffer. Adapted from tea.el |
c8472948 | 2 | |
e91081eb | 3 | ;; Copyright (C) 1988, 1994, 1997, 2001, 2002, 2003, 2004, |
409cc4a3 | 4 | ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
c0274f38 | 5 | |
07168830 | 6 | ;; Author: Olin Shivers <olin.shivers@cs.cmu.edu> |
8a16a826 | 7 | ;; Maintainer: FSF |
e9571d2a | 8 | ;; Keywords: processes, lisp |
d1c7011d | 9 | |
430c3bab RS |
10 | ;; This file is part of GNU Emacs. |
11 | ||
eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
430c3bab | 13 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
430c3bab RS |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
d1c7011d ER |
24 | |
25 | ;;; Commentary: | |
26 | ||
c59e5c82 | 27 | ;; This is a customization of comint-mode (see comint.el) |
b578f267 EN |
28 | ;; |
29 | ;; Written by Olin Shivers (olin.shivers@cs.cmu.edu). With bits and pieces | |
30 | ;; lifted from scheme.el, shell.el, clisp.el, newclisp.el, cobol.el, et al.. | |
31 | ;; 8/88 | |
32 | ;; | |
33 | ;; Please send me bug reports, bug fixes, and extensions, so that I can | |
34 | ;; merge them into the master source. | |
35 | ;; | |
36 | ;; The changelog is at the end of this file. | |
37 | ;; | |
38 | ;; NOTE: MIT Cscheme, when invoked with the -emacs flag, has a special user | |
39 | ;; interface that communicates process state back to the superior emacs by | |
40 | ;; outputting special control sequences. The gnumacs package, xscheme.el, has | |
41 | ;; lots and lots of special purpose code to read these control sequences, and | |
42 | ;; so is very tightly integrated with the cscheme process. The cscheme | |
43 | ;; interrupt handler and debugger read single character commands in cbreak | |
44 | ;; mode; when this happens, xscheme.el switches to special keymaps that bind | |
45 | ;; the single letter command keys to emacs functions that directly send the | |
46 | ;; character to the scheme process. Cmuscheme mode does *not* provide this | |
47 | ;; functionality. If you are a cscheme user, you may prefer to use the | |
48 | ;; xscheme.el/cscheme -emacs interaction. | |
71296446 | 49 | ;; |
b578f267 EN |
50 | ;; Here's a summary of the pros and cons, as I see them. |
51 | ;; xscheme: Tightly integrated with inferior cscheme process! A few commands | |
52 | ;; not in cmuscheme. But. Integration is a bit of a hack. Input | |
53 | ;; history only keeps the immediately prior input. Bizarre | |
54 | ;; keybindings. | |
71296446 | 55 | ;; |
b578f267 EN |
56 | ;; cmuscheme: Not tightly integrated with inferior cscheme process. But. |
57 | ;; Carefully integrated functionality with the entire suite of | |
58 | ;; comint-derived CMU process modes. Keybindings reminiscent of | |
59 | ;; Zwei and Hemlock. Good input history. A few commands not in | |
60 | ;; xscheme. | |
71296446 | 61 | ;; |
b578f267 EN |
62 | ;; It's a tradeoff. Pay your money; take your choice. If you use a Scheme |
63 | ;; that isn't Cscheme, of course, there isn't a choice. Xscheme.el is *very* | |
64 | ;; Cscheme-specific; you must use cmuscheme.el. Interested parties are | |
65 | ;; invited to port xscheme functionality on top of comint mode... | |
2f790b20 | 66 | |
8b877ecd DL |
67 | ;;; CHANGE LOG |
68 | ;;; =========================================================================== | |
69 | ;;; 8/88 Olin | |
80e0fd4c | 70 | ;;; Created. |
8b877ecd DL |
71 | ;;; |
72 | ;;; 2/15/89 Olin | |
73 | ;;; Removed -emacs flag from process invocation. It's only useful for | |
74 | ;;; cscheme, and makes cscheme assume it's running under xscheme.el, | |
75 | ;;; which messes things up royally. A bug. | |
76 | ;;; | |
77 | ;;; 5/22/90 Olin | |
78 | ;;; - Upgraded to use comint-send-string and comint-send-region. | |
79 | ;;; - run-scheme now offers to let you edit the command line if | |
80 | ;;; you invoke it with a prefix-arg. M-x scheme is redundant, and | |
81 | ;;; has been removed. | |
82 | ;;; - Explicit references to process "scheme" have been replaced with | |
83 | ;;; (scheme-proc). This allows better handling of multiple process bufs. | |
84 | ;;; - Added scheme-send-last-sexp, bound to C-x C-e. A gnu convention. | |
85 | ;;; - Have not added process query facility a la cmulisp.el's lisp-show-arglist | |
86 | ;;; and friends, but interested hackers might find a useful application | |
87 | ;;; of this facility. | |
88 | ;;; | |
89 | ;;; 3/12/90 Olin | |
90 | ;;; - scheme-load-file and scheme-compile-file no longer switch-to-scheme. | |
91 | ;;; Tale suggested this. | |
92 | ||
d1c7011d ER |
93 | ;;; Code: |
94 | ||
2f790b20 JB |
95 | (require 'scheme) |
96 | (require 'comint) | |
97 | ||
4bef9110 SE |
98 | |
99 | (defgroup cmuscheme nil | |
100 | "Run a scheme process in a buffer." | |
80e0fd4c | 101 | :group 'scheme) |
4bef9110 | 102 | |
2f790b20 JB |
103 | ;;; INFERIOR SCHEME MODE STUFF |
104 | ;;;============================================================================ | |
105 | ||
4bef9110 | 106 | (defcustom inferior-scheme-mode-hook nil |
c59e5c82 | 107 | "*Hook for customizing inferior-scheme mode." |
4bef9110 SE |
108 | :type 'hook |
109 | :group 'cmuscheme) | |
110 | ||
e3f9c7f8 SM |
111 | (defvar inferior-scheme-mode-map |
112 | (let ((m (make-sparse-keymap))) | |
113 | (define-key m "\M-\C-x" 'scheme-send-definition) ;gnu convention | |
114 | (define-key m "\C-x\C-e" 'scheme-send-last-sexp) | |
115 | (define-key m "\C-c\C-l" 'scheme-load-file) | |
116 | (define-key m "\C-c\C-k" 'scheme-compile-file) | |
117 | (scheme-mode-commands m) | |
118 | m)) | |
2f790b20 JB |
119 | |
120 | ;; Install the process communication commands in the scheme-mode keymap. | |
121 | (define-key scheme-mode-map "\M-\C-x" 'scheme-send-definition);gnu convention | |
122 | (define-key scheme-mode-map "\C-x\C-e" 'scheme-send-last-sexp);gnu convention | |
123 | (define-key scheme-mode-map "\C-c\C-e" 'scheme-send-definition) | |
124 | (define-key scheme-mode-map "\C-c\M-e" 'scheme-send-definition-and-go) | |
125 | (define-key scheme-mode-map "\C-c\C-r" 'scheme-send-region) | |
126 | (define-key scheme-mode-map "\C-c\M-r" 'scheme-send-region-and-go) | |
127 | (define-key scheme-mode-map "\C-c\M-c" 'scheme-compile-definition) | |
128 | (define-key scheme-mode-map "\C-c\C-c" 'scheme-compile-definition-and-go) | |
6f048d26 EZ |
129 | (define-key scheme-mode-map "\C-c\C-t" 'scheme-trace-procedure) |
130 | (define-key scheme-mode-map "\C-c\C-x" 'scheme-expand-current-form) | |
2f790b20 JB |
131 | (define-key scheme-mode-map "\C-c\C-z" 'switch-to-scheme) |
132 | (define-key scheme-mode-map "\C-c\C-l" 'scheme-load-file) | |
133 | (define-key scheme-mode-map "\C-c\C-k" 'scheme-compile-file) ;k for "kompile" | |
134 | ||
45f13532 RS |
135 | (let ((map (lookup-key scheme-mode-map [menu-bar scheme]))) |
136 | (define-key map [separator-eval] '("--")) | |
137 | (define-key map [compile-file] | |
138 | '("Compile Scheme File" . scheme-compile-file)) | |
139 | (define-key map [load-file] | |
140 | '("Load Scheme File" . scheme-load-file)) | |
141 | (define-key map [switch] | |
142 | '("Switch to Scheme" . switch-to-scheme)) | |
143 | (define-key map [com-def-go] | |
7147c177 | 144 | '("Compile Definition & Go" . scheme-compile-definition-and-go)) |
45f13532 | 145 | (define-key map [com-def] |
7147c177 | 146 | '("Compile Definition" . scheme-compile-definition)) |
6f048d26 EZ |
147 | (define-key map [exp-form] |
148 | '("Expand current form" . scheme-expand-current-form)) | |
149 | (define-key map [trace-proc] | |
150 | '("Trace procedure" . scheme-trace-procedure)) | |
45f13532 RS |
151 | (define-key map [send-def-go] |
152 | '("Evaluate Last Definition & Go" . scheme-send-definition-and-go)) | |
153 | (define-key map [send-def] | |
154 | '("Evaluate Last Definition" . scheme-send-definition)) | |
155 | (define-key map [send-region-go] | |
156 | '("Evaluate Region & Go" . scheme-send-region-and-go)) | |
45f13532 RS |
157 | (define-key map [send-region] |
158 | '("Evaluate Region" . scheme-send-region)) | |
159 | (define-key map [send-sexp] | |
160 | '("Evaluate Last S-expression" . scheme-send-last-sexp)) | |
6f048d26 | 161 | ) |
45f13532 | 162 | |
67f3e2fd RS |
163 | (defvar scheme-buffer) |
164 | ||
e3f9c7f8 | 165 | (define-derived-mode inferior-scheme-mode comint-mode "Inferior Scheme" |
2f790b20 JB |
166 | "Major mode for interacting with an inferior Scheme process. |
167 | ||
168 | The following commands are available: | |
169 | \\{inferior-scheme-mode-map} | |
170 | ||
171 | A Scheme process can be fired up with M-x run-scheme. | |
172 | ||
c59e5c82 | 173 | Customization: Entry to this mode runs the hooks on comint-mode-hook and |
2f790b20 JB |
174 | inferior-scheme-mode-hook (in that order). |
175 | ||
176 | You can send text to the inferior Scheme process from other buffers containing | |
80e0fd4c | 177 | Scheme source. |
2f790b20 JB |
178 | switch-to-scheme switches the current buffer to the Scheme process buffer. |
179 | scheme-send-definition sends the current definition to the Scheme process. | |
180 | scheme-compile-definition compiles the current definition. | |
181 | scheme-send-region sends the current region to the Scheme process. | |
182 | scheme-compile-region compiles the current region. | |
183 | ||
184 | scheme-send-definition-and-go, scheme-compile-definition-and-go, | |
185 | scheme-send-region-and-go, and scheme-compile-region-and-go | |
186 | switch to the Scheme process buffer after sending their text. | |
187 | For information on running multiple processes in multiple buffers, see | |
188 | documentation for variable scheme-buffer. | |
189 | ||
190 | Commands: | |
80e0fd4c | 191 | Return after the end of the process' output sends the text from the |
2f790b20 JB |
192 | end of process to point. |
193 | Return before the end of the process' output copies the sexp ending at point | |
194 | to the end of the process' output, and sends it. | |
195 | Delete converts tabs to spaces as it moves back. | |
196 | Tab indents for Scheme; with argument, shifts rest | |
197 | of expression rigidly with the current line. | |
198 | C-M-q does Tab on each line starting within following expression. | |
199 | Paragraphs are separated only by blank lines. Semicolons start comments. | |
200 | If you accidentally suspend your process, use \\[comint-continue-subjob] | |
201 | to continue it." | |
c59e5c82 | 202 | ;; Customize in inferior-scheme-mode-hook |
9f370a90 | 203 | (setq comint-prompt-regexp "^[^>\n]*>+ *") ; OK for cscheme, oaklisp, T,... |
2f790b20 | 204 | (scheme-mode-variables) |
7465eb38 | 205 | (setq mode-line-process '(":%s")) |
2f790b20 | 206 | (setq comint-input-filter (function scheme-input-filter)) |
e3f9c7f8 | 207 | (setq comint-get-old-input (function scheme-get-old-input))) |
2f790b20 | 208 | |
4bef9110 | 209 | (defcustom inferior-scheme-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'" |
2f790b20 | 210 | "*Input matching this regexp are not saved on the history list. |
4bef9110 SE |
211 | Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters." |
212 | :type 'regexp | |
213 | :group 'cmuscheme) | |
2f790b20 | 214 | |
67f3e2fd | 215 | (defun scheme-input-filter (str) |
80e0fd4c | 216 | "Don't save anything matching `inferior-scheme-filter-regexp'." |
67f3e2fd RS |
217 | (not (string-match inferior-scheme-filter-regexp str))) |
218 | ||
2f790b20 | 219 | (defun scheme-get-old-input () |
80e0fd4c | 220 | "Snarf the sexp ending at point." |
2f790b20 JB |
221 | (save-excursion |
222 | (let ((end (point))) | |
223 | (backward-sexp) | |
224 | (buffer-substring (point) end)))) | |
225 | ||
226 | (defun scheme-args-to-list (string) | |
227 | (let ((where (string-match "[ \t]" string))) | |
228 | (cond ((null where) (list string)) | |
229 | ((not (= where 0)) | |
230 | (cons (substring string 0 where) | |
231 | (scheme-args-to-list (substring string (+ 1 where) | |
232 | (length string))))) | |
233 | (t (let ((pos (string-match "[^ \t]" string))) | |
234 | (if (null pos) | |
235 | nil | |
236 | (scheme-args-to-list (substring string pos | |
237 | (length string))))))))) | |
238 | ||
a0338514 | 239 | ;;;###autoload |
2f790b20 | 240 | (defun run-scheme (cmd) |
6f048d26 | 241 | "Run an inferior Scheme process, input and output via buffer `*scheme*'. |
349a5b09 | 242 | If there is a process already running in `*scheme*', switch to that buffer. |
2f790b20 | 243 | With argument, allows you to edit the command line (default is value |
6f048d26 | 244 | of `scheme-program-name'). |
00358595 JB |
245 | If the file `~/.emacs_SCHEMENAME' or `~/.emacs.d/init_SCHEMENAME.scm' exists, |
246 | it is given as initial input. | |
6f048d26 EZ |
247 | Note that this may lose due to a timing error if the Scheme processor |
248 | discards input when it starts up. | |
249 | Runs the hook `inferior-scheme-mode-hook' \(after the `comint-mode-hook' | |
250 | is run). | |
2f790b20 JB |
251 | \(Type \\[describe-mode] in the process buffer for a list of commands.)" |
252 | ||
253 | (interactive (list (if current-prefix-arg | |
80e0fd4c DL |
254 | (read-string "Run Scheme: " scheme-program-name) |
255 | scheme-program-name))) | |
2f790b20 JB |
256 | (if (not (comint-check-proc "*scheme*")) |
257 | (let ((cmdlist (scheme-args-to-list cmd))) | |
258 | (set-buffer (apply 'make-comint "scheme" (car cmdlist) | |
6f048d26 | 259 | (scheme-start-file (car cmdlist)) (cdr cmdlist))) |
2f790b20 | 260 | (inferior-scheme-mode))) |
80e0fd4c | 261 | (setq scheme-program-name cmd) |
2f790b20 | 262 | (setq scheme-buffer "*scheme*") |
349a5b09 RS |
263 | (pop-to-buffer "*scheme*")) |
264 | ;;;###autoload (add-hook 'same-window-buffer-names "*scheme*") | |
2f790b20 | 265 | |
6f048d26 EZ |
266 | (defun scheme-start-file (prog) |
267 | "Return the name of the start file corresponding to PROG. | |
268 | Search in the directories \"~\" and \"~/.emacs.d\", in this | |
269 | order. Return nil if no start file found." | |
9a5cd478 EZ |
270 | (let* ((progname (file-name-nondirectory prog)) |
271 | (start-file (concat "~/.emacs_" progname)) | |
5a96c751 | 272 | (alt-start-file (concat user-emacs-directory "init_" progname ".scm"))) |
6f048d26 EZ |
273 | (if (file-exists-p start-file) |
274 | start-file | |
00358595 | 275 | (and (file-exists-p alt-start-file) alt-start-file)))) |
6f048d26 | 276 | |
2f790b20 JB |
277 | (defun scheme-send-region (start end) |
278 | "Send the current region to the inferior Scheme process." | |
279 | (interactive "r") | |
280 | (comint-send-region (scheme-proc) start end) | |
281 | (comint-send-string (scheme-proc) "\n")) | |
282 | ||
283 | (defun scheme-send-definition () | |
284 | "Send the current definition to the inferior Scheme process." | |
285 | (interactive) | |
286 | (save-excursion | |
287 | (end-of-defun) | |
288 | (let ((end (point))) | |
289 | (beginning-of-defun) | |
290 | (scheme-send-region (point) end)))) | |
291 | ||
292 | (defun scheme-send-last-sexp () | |
293 | "Send the previous sexp to the inferior Scheme process." | |
294 | (interactive) | |
295 | (scheme-send-region (save-excursion (backward-sexp) (point)) (point))) | |
296 | ||
4bef9110 SE |
297 | (defcustom scheme-compile-exp-command "(compile '%s)" |
298 | "*Template for issuing commands to compile arbitrary Scheme expressions." | |
299 | :type 'string | |
300 | :group 'cmuscheme) | |
2f790b20 JB |
301 | |
302 | (defun scheme-compile-region (start end) | |
ff11d0d9 | 303 | "Compile the current region in the inferior Scheme process. |
2f790b20 JB |
304 | \(A BEGIN is wrapped around the region: (BEGIN <region>))" |
305 | (interactive "r") | |
306 | (comint-send-string (scheme-proc) (format scheme-compile-exp-command | |
307 | (format "(begin %s)" | |
308 | (buffer-substring start end)))) | |
309 | (comint-send-string (scheme-proc) "\n")) | |
310 | ||
311 | (defun scheme-compile-definition () | |
312 | "Compile the current definition in the inferior Scheme process." | |
313 | (interactive) | |
314 | (save-excursion | |
315 | (end-of-defun) | |
316 | (let ((end (point))) | |
317 | (beginning-of-defun) | |
318 | (scheme-compile-region (point) end)))) | |
319 | ||
6f048d26 EZ |
320 | (defcustom scheme-trace-command "(trace %s)" |
321 | "*Template for issuing commands to trace a Scheme procedure. | |
322 | Some Scheme implementations might require more elaborate commands here. | |
323 | For PLT-Scheme, e.g., one should use | |
324 | ||
325 | (setq scheme-trace-command \"(begin (require (lib \\\"trace.ss\\\")) (trace %s))\") | |
326 | ||
327 | For Scheme 48 and Scsh use \",trace %s\"." | |
328 | :type 'string | |
329 | :group 'cmuscheme) | |
330 | ||
331 | (defcustom scheme-untrace-command "(untrace %s)" | |
332 | "*Template for switching off tracing of a Scheme procedure. | |
333 | Scheme 48 and Scsh users should set this variable to \",untrace %s\"." | |
334 | ||
335 | :type 'string | |
336 | :group 'cmuscheme) | |
337 | ||
338 | (defun scheme-trace-procedure (proc &optional untrace) | |
339 | "Trace procedure PROC in the inferior Scheme process. | |
340 | With a prefix argument switch off tracing of procedure PROC." | |
341 | (interactive | |
342 | (list (let ((current (symbol-at-point)) | |
343 | (action (if current-prefix-arg "Untrace" "Trace"))) | |
344 | (if current | |
345 | (read-string (format "%s procedure [%s]: " action current) nil nil (symbol-name current)) | |
346 | (read-string (format "%s procedure: " action)))) | |
347 | current-prefix-arg)) | |
348 | (when (= (length proc) 0) | |
349 | (error "Invalid procedure name")) | |
350 | (comint-send-string (scheme-proc) | |
28a205fe | 351 | (format |
6f048d26 EZ |
352 | (if untrace scheme-untrace-command scheme-trace-command) |
353 | proc)) | |
354 | (comint-send-string (scheme-proc) "\n")) | |
355 | ||
356 | (defcustom scheme-macro-expand-command "(expand %s)" | |
357 | "*Template for macro-expanding a Scheme form. | |
358 | For Scheme 48 and Scsh use \",expand %s\"." | |
359 | :type 'string | |
360 | :group 'cmuscheme) | |
361 | ||
362 | (defun scheme-expand-current-form () | |
363 | "Macro-expand the form at point in the inferior Scheme process." | |
364 | (interactive) | |
365 | (let ((current-form (scheme-form-at-point))) | |
366 | (if current-form | |
367 | (progn | |
368 | (comint-send-string (scheme-proc) | |
28a205fe | 369 | (format |
6f048d26 EZ |
370 | scheme-macro-expand-command |
371 | current-form)) | |
28a205fe | 372 | (comint-send-string (scheme-proc) "\n")) |
6f048d26 EZ |
373 | (error "Not at a form")))) |
374 | ||
375 | (defun scheme-form-at-point () | |
376 | (let ((next-sexp (thing-at-point 'sexp))) | |
377 | (if (and next-sexp (string-equal (substring next-sexp 0 1) "(")) | |
378 | next-sexp | |
379 | (save-excursion | |
380 | (backward-up-list) | |
381 | (scheme-form-at-point))))) | |
382 | ||
2f790b20 JB |
383 | (defun switch-to-scheme (eob-p) |
384 | "Switch to the scheme process buffer. | |
80e0fd4c | 385 | With argument, position cursor at end of buffer." |
2f790b20 | 386 | (interactive "P") |
6f048d26 EZ |
387 | (if (or (and scheme-buffer (get-buffer scheme-buffer)) |
388 | (scheme-interactively-start-process)) | |
2f790b20 | 389 | (pop-to-buffer scheme-buffer) |
6f048d26 EZ |
390 | (error "No current process buffer. See variable `scheme-buffer'")) |
391 | (when eob-p | |
392 | (push-mark) | |
393 | (goto-char (point-max)))) | |
2f790b20 JB |
394 | |
395 | (defun scheme-send-region-and-go (start end) | |
ff11d0d9 CZ |
396 | "Send the current region to the inferior Scheme process. |
397 | Then switch to the process buffer." | |
2f790b20 JB |
398 | (interactive "r") |
399 | (scheme-send-region start end) | |
400 | (switch-to-scheme t)) | |
401 | ||
402 | (defun scheme-send-definition-and-go () | |
80e0fd4c | 403 | "Send the current definition to the inferior Scheme. |
ff11d0d9 | 404 | Then switch to the process buffer." |
2f790b20 JB |
405 | (interactive) |
406 | (scheme-send-definition) | |
407 | (switch-to-scheme t)) | |
408 | ||
409 | (defun scheme-compile-definition-and-go () | |
80e0fd4c | 410 | "Compile the current definition in the inferior Scheme. |
ff11d0d9 | 411 | Then switch to the process buffer." |
2f790b20 JB |
412 | (interactive) |
413 | (scheme-compile-definition) | |
414 | (switch-to-scheme t)) | |
415 | ||
416 | (defun scheme-compile-region-and-go (start end) | |
80e0fd4c | 417 | "Compile the current region in the inferior Scheme. |
ff11d0d9 | 418 | Then switch to the process buffer." |
2f790b20 JB |
419 | (interactive "r") |
420 | (scheme-compile-region start end) | |
421 | (switch-to-scheme t)) | |
422 | ||
4bef9110 | 423 | (defcustom scheme-source-modes '(scheme-mode) |
2f790b20 JB |
424 | "*Used to determine if a buffer contains Scheme source code. |
425 | If it's loaded into a buffer that is in one of these major modes, it's | |
80e0fd4c | 426 | considered a scheme source file by `scheme-load-file' and `scheme-compile-file'. |
4bef9110 SE |
427 | Used by these commands to determine defaults." |
428 | :type '(repeat function) | |
429 | :group 'cmuscheme) | |
2f790b20 JB |
430 | |
431 | (defvar scheme-prev-l/c-dir/file nil | |
ff11d0d9 | 432 | "Caches the last (directory . file) pair. |
80e0fd4c | 433 | Caches the last pair used in the last `scheme-load-file' or |
c59e5c82 JB |
434 | `scheme-compile-file' command. Used for determining the default |
435 | in the next one.") | |
2f790b20 JB |
436 | |
437 | (defun scheme-load-file (file-name) | |
80e0fd4c | 438 | "Load a Scheme file FILE-NAME into the inferior Scheme process." |
2f790b20 | 439 | (interactive (comint-get-source "Load Scheme file: " scheme-prev-l/c-dir/file |
0ff9b955 | 440 | scheme-source-modes t)) ; t because `load' |
2f790b20 JB |
441 | ; needs an exact name |
442 | (comint-check-source file-name) ; Check to see if buffer needs saved. | |
443 | (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name) | |
444 | (file-name-nondirectory file-name))) | |
445 | (comint-send-string (scheme-proc) (concat "(load \"" | |
446 | file-name | |
447 | "\"\)\n"))) | |
448 | ||
449 | (defun scheme-compile-file (file-name) | |
80e0fd4c | 450 | "Compile a Scheme file FILE-NAME in the inferior Scheme process." |
2f790b20 JB |
451 | (interactive (comint-get-source "Compile Scheme file: " |
452 | scheme-prev-l/c-dir/file | |
453 | scheme-source-modes | |
0ff9b955 | 454 | nil)) ; nil because COMPILE doesn't |
2f790b20 JB |
455 | ; need an exact name. |
456 | (comint-check-source file-name) ; Check to see if buffer needs saved. | |
457 | (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name) | |
458 | (file-name-nondirectory file-name))) | |
459 | (comint-send-string (scheme-proc) (concat "(compile-file \"" | |
460 | file-name | |
461 | "\"\)\n"))) | |
462 | ||
463 | \f | |
464 | (defvar scheme-buffer nil "*The current scheme process buffer. | |
465 | ||
466 | MULTIPLE PROCESS SUPPORT | |
467 | =========================================================================== | |
468 | Cmuscheme.el supports, in a fairly simple fashion, running multiple Scheme | |
80e0fd4c DL |
469 | processes. To run multiple Scheme processes, you start the first up with |
470 | \\[run-scheme]. It will be in a buffer named *scheme*. Rename this buffer | |
471 | with \\[rename-buffer]. You may now start up a new process with another | |
472 | \\[run-scheme]. It will be in a new buffer, named *scheme*. You can | |
2f790b20 JB |
473 | switch between the different process buffers with \\[switch-to-buffer]. |
474 | ||
475 | Commands that send text from source buffers to Scheme processes -- | |
80e0fd4c DL |
476 | like `scheme-send-definition' or `scheme-compile-region' -- have to choose a |
477 | process to send to, when you have more than one Scheme process around. This | |
478 | is determined by the global variable `scheme-buffer'. Suppose you | |
2f790b20 JB |
479 | have three inferior Schemes running: |
480 | Buffer Process | |
481 | foo scheme | |
482 | bar scheme<2> | |
483 | *scheme* scheme<3> | |
484 | If you do a \\[scheme-send-definition-and-go] command on some Scheme source | |
485 | code, what process do you send it to? | |
486 | ||
80e0fd4c | 487 | - If you're in a process buffer (foo, bar, or *scheme*), |
2f790b20 JB |
488 | you send it to that process. |
489 | - If you're in some other buffer (e.g., a source file), you | |
80e0fd4c DL |
490 | send it to the process attached to buffer `scheme-buffer'. |
491 | This process selection is performed by function `scheme-proc'. | |
2f790b20 | 492 | |
80e0fd4c DL |
493 | Whenever \\[run-scheme] fires up a new process, it resets `scheme-buffer' |
494 | to be the new process's buffer. If you only run one process, this will | |
495 | do the right thing. If you run multiple processes, you can change | |
496 | `scheme-buffer' to another process buffer with \\[set-variable]. | |
2f790b20 | 497 | |
80e0fd4c | 498 | More sophisticated approaches are, of course, possible. If you find yourself |
2f790b20 JB |
499 | needing to switch back and forth between multiple processes frequently, |
500 | you may wish to consider ilisp.el, a larger, more sophisticated package | |
80e0fd4c DL |
501 | for running inferior Lisp and Scheme processes. The approach taken here is |
502 | for a minimal, simple implementation. Feel free to extend it.") | |
2f790b20 JB |
503 | |
504 | (defun scheme-proc () | |
6f048d26 EZ |
505 | "Return the current Scheme process, starting one if necessary. |
506 | See variable `scheme-buffer'." | |
507 | (unless (and scheme-buffer | |
28a205fe | 508 | (get-buffer scheme-buffer) |
6f048d26 EZ |
509 | (comint-check-proc scheme-buffer)) |
510 | (scheme-interactively-start-process)) | |
511 | (or (scheme-get-process) | |
512 | (error "No current process. See variable `scheme-buffer'"))) | |
513 | ||
514 | (defun scheme-get-process () | |
515 | "Return the current Scheme process or nil if none is running." | |
516 | (get-buffer-process (if (eq major-mode 'inferior-scheme-mode) | |
517 | (current-buffer) | |
518 | scheme-buffer))) | |
519 | ||
520 | (defun scheme-interactively-start-process (&optional cmd) | |
521 | "Start an inferior Scheme process. Return the process started. | |
522 | Since this command is run implicitly, always ask the user for the | |
523 | command to run." | |
524 | (save-window-excursion | |
525 | (run-scheme (read-string "Run Scheme: " scheme-program-name)))) | |
2f790b20 | 526 | |
c59e5c82 | 527 | ;;; Do the user's customization... |
2f790b20 | 528 | |
4bef9110 | 529 | (defcustom cmuscheme-load-hook nil |
2f790b20 | 530 | "This hook is run when cmuscheme is loaded in. |
4bef9110 SE |
531 | This is a good place to put keybindings." |
532 | :type 'hook | |
533 | :group 'cmuscheme) | |
71296446 | 534 | |
2f790b20 JB |
535 | (run-hooks 'cmuscheme-load-hook) |
536 | ||
49116ac0 | 537 | (provide 'cmuscheme) |
c0274f38 | 538 | |
7147c177 | 539 | ;; arch-tag: e8795f4a-c496-45a2-97b4-8e0f2a2c57d2 |
c0274f38 | 540 | ;;; cmuscheme.el ends here |