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 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
b4aa6026 | 14 | ;; the Free Software Foundation; either version 3, or (at your option) |
430c3bab RS |
15 | ;; any later version. |
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 | |
b578f267 | 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
d1c7011d ER |
26 | |
27 | ;;; Commentary: | |
28 | ||
c59e5c82 | 29 | ;; This is a customization of comint-mode (see comint.el) |
b578f267 EN |
30 | ;; |
31 | ;; Written by Olin Shivers (olin.shivers@cs.cmu.edu). With bits and pieces | |
32 | ;; lifted from scheme.el, shell.el, clisp.el, newclisp.el, cobol.el, et al.. | |
33 | ;; 8/88 | |
34 | ;; | |
35 | ;; Please send me bug reports, bug fixes, and extensions, so that I can | |
36 | ;; merge them into the master source. | |
37 | ;; | |
38 | ;; The changelog is at the end of this file. | |
39 | ;; | |
40 | ;; NOTE: MIT Cscheme, when invoked with the -emacs flag, has a special user | |
41 | ;; interface that communicates process state back to the superior emacs by | |
42 | ;; outputting special control sequences. The gnumacs package, xscheme.el, has | |
43 | ;; lots and lots of special purpose code to read these control sequences, and | |
44 | ;; so is very tightly integrated with the cscheme process. The cscheme | |
45 | ;; interrupt handler and debugger read single character commands in cbreak | |
46 | ;; mode; when this happens, xscheme.el switches to special keymaps that bind | |
47 | ;; the single letter command keys to emacs functions that directly send the | |
48 | ;; character to the scheme process. Cmuscheme mode does *not* provide this | |
49 | ;; functionality. If you are a cscheme user, you may prefer to use the | |
50 | ;; xscheme.el/cscheme -emacs interaction. | |
71296446 | 51 | ;; |
b578f267 EN |
52 | ;; Here's a summary of the pros and cons, as I see them. |
53 | ;; xscheme: Tightly integrated with inferior cscheme process! A few commands | |
54 | ;; not in cmuscheme. But. Integration is a bit of a hack. Input | |
55 | ;; history only keeps the immediately prior input. Bizarre | |
56 | ;; keybindings. | |
71296446 | 57 | ;; |
b578f267 EN |
58 | ;; cmuscheme: Not tightly integrated with inferior cscheme process. But. |
59 | ;; Carefully integrated functionality with the entire suite of | |
60 | ;; comint-derived CMU process modes. Keybindings reminiscent of | |
61 | ;; Zwei and Hemlock. Good input history. A few commands not in | |
62 | ;; xscheme. | |
71296446 | 63 | ;; |
b578f267 EN |
64 | ;; It's a tradeoff. Pay your money; take your choice. If you use a Scheme |
65 | ;; that isn't Cscheme, of course, there isn't a choice. Xscheme.el is *very* | |
66 | ;; Cscheme-specific; you must use cmuscheme.el. Interested parties are | |
67 | ;; invited to port xscheme functionality on top of comint mode... | |
2f790b20 | 68 | |
8b877ecd DL |
69 | ;;; CHANGE LOG |
70 | ;;; =========================================================================== | |
71 | ;;; 8/88 Olin | |
80e0fd4c | 72 | ;;; Created. |
8b877ecd DL |
73 | ;;; |
74 | ;;; 2/15/89 Olin | |
75 | ;;; Removed -emacs flag from process invocation. It's only useful for | |
76 | ;;; cscheme, and makes cscheme assume it's running under xscheme.el, | |
77 | ;;; which messes things up royally. A bug. | |
78 | ;;; | |
79 | ;;; 5/22/90 Olin | |
80 | ;;; - Upgraded to use comint-send-string and comint-send-region. | |
81 | ;;; - run-scheme now offers to let you edit the command line if | |
82 | ;;; you invoke it with a prefix-arg. M-x scheme is redundant, and | |
83 | ;;; has been removed. | |
84 | ;;; - Explicit references to process "scheme" have been replaced with | |
85 | ;;; (scheme-proc). This allows better handling of multiple process bufs. | |
86 | ;;; - Added scheme-send-last-sexp, bound to C-x C-e. A gnu convention. | |
87 | ;;; - Have not added process query facility a la cmulisp.el's lisp-show-arglist | |
88 | ;;; and friends, but interested hackers might find a useful application | |
89 | ;;; of this facility. | |
90 | ;;; | |
91 | ;;; 3/12/90 Olin | |
92 | ;;; - scheme-load-file and scheme-compile-file no longer switch-to-scheme. | |
93 | ;;; Tale suggested this. | |
94 | ||
d1c7011d ER |
95 | ;;; Code: |
96 | ||
2f790b20 JB |
97 | (require 'scheme) |
98 | (require 'comint) | |
99 | ||
4bef9110 SE |
100 | |
101 | (defgroup cmuscheme nil | |
102 | "Run a scheme process in a buffer." | |
80e0fd4c | 103 | :group 'scheme) |
4bef9110 | 104 | |
2f790b20 JB |
105 | ;;; INFERIOR SCHEME MODE STUFF |
106 | ;;;============================================================================ | |
107 | ||
4bef9110 | 108 | (defcustom inferior-scheme-mode-hook nil |
c59e5c82 | 109 | "*Hook for customizing inferior-scheme mode." |
4bef9110 SE |
110 | :type 'hook |
111 | :group 'cmuscheme) | |
112 | ||
e3f9c7f8 SM |
113 | (defvar inferior-scheme-mode-map |
114 | (let ((m (make-sparse-keymap))) | |
115 | (define-key m "\M-\C-x" 'scheme-send-definition) ;gnu convention | |
116 | (define-key m "\C-x\C-e" 'scheme-send-last-sexp) | |
117 | (define-key m "\C-c\C-l" 'scheme-load-file) | |
118 | (define-key m "\C-c\C-k" 'scheme-compile-file) | |
119 | (scheme-mode-commands m) | |
120 | m)) | |
2f790b20 JB |
121 | |
122 | ;; Install the process communication commands in the scheme-mode keymap. | |
123 | (define-key scheme-mode-map "\M-\C-x" 'scheme-send-definition);gnu convention | |
124 | (define-key scheme-mode-map "\C-x\C-e" 'scheme-send-last-sexp);gnu convention | |
125 | (define-key scheme-mode-map "\C-c\C-e" 'scheme-send-definition) | |
126 | (define-key scheme-mode-map "\C-c\M-e" 'scheme-send-definition-and-go) | |
127 | (define-key scheme-mode-map "\C-c\C-r" 'scheme-send-region) | |
128 | (define-key scheme-mode-map "\C-c\M-r" 'scheme-send-region-and-go) | |
129 | (define-key scheme-mode-map "\C-c\M-c" 'scheme-compile-definition) | |
130 | (define-key scheme-mode-map "\C-c\C-c" 'scheme-compile-definition-and-go) | |
6f048d26 EZ |
131 | (define-key scheme-mode-map "\C-c\C-t" 'scheme-trace-procedure) |
132 | (define-key scheme-mode-map "\C-c\C-x" 'scheme-expand-current-form) | |
2f790b20 JB |
133 | (define-key scheme-mode-map "\C-c\C-z" 'switch-to-scheme) |
134 | (define-key scheme-mode-map "\C-c\C-l" 'scheme-load-file) | |
135 | (define-key scheme-mode-map "\C-c\C-k" 'scheme-compile-file) ;k for "kompile" | |
136 | ||
45f13532 RS |
137 | (let ((map (lookup-key scheme-mode-map [menu-bar scheme]))) |
138 | (define-key map [separator-eval] '("--")) | |
139 | (define-key map [compile-file] | |
140 | '("Compile Scheme File" . scheme-compile-file)) | |
141 | (define-key map [load-file] | |
142 | '("Load Scheme File" . scheme-load-file)) | |
143 | (define-key map [switch] | |
144 | '("Switch to Scheme" . switch-to-scheme)) | |
145 | (define-key map [com-def-go] | |
7147c177 | 146 | '("Compile Definition & Go" . scheme-compile-definition-and-go)) |
45f13532 | 147 | (define-key map [com-def] |
7147c177 | 148 | '("Compile Definition" . scheme-compile-definition)) |
6f048d26 EZ |
149 | (define-key map [exp-form] |
150 | '("Expand current form" . scheme-expand-current-form)) | |
151 | (define-key map [trace-proc] | |
152 | '("Trace procedure" . scheme-trace-procedure)) | |
45f13532 RS |
153 | (define-key map [send-def-go] |
154 | '("Evaluate Last Definition & Go" . scheme-send-definition-and-go)) | |
155 | (define-key map [send-def] | |
156 | '("Evaluate Last Definition" . scheme-send-definition)) | |
157 | (define-key map [send-region-go] | |
158 | '("Evaluate Region & Go" . scheme-send-region-and-go)) | |
45f13532 RS |
159 | (define-key map [send-region] |
160 | '("Evaluate Region" . scheme-send-region)) | |
161 | (define-key map [send-sexp] | |
162 | '("Evaluate Last S-expression" . scheme-send-last-sexp)) | |
6f048d26 | 163 | ) |
45f13532 | 164 | |
67f3e2fd RS |
165 | (defvar scheme-buffer) |
166 | ||
e3f9c7f8 | 167 | (define-derived-mode inferior-scheme-mode comint-mode "Inferior Scheme" |
2f790b20 JB |
168 | "Major mode for interacting with an inferior Scheme process. |
169 | ||
170 | The following commands are available: | |
171 | \\{inferior-scheme-mode-map} | |
172 | ||
173 | A Scheme process can be fired up with M-x run-scheme. | |
174 | ||
c59e5c82 | 175 | Customization: Entry to this mode runs the hooks on comint-mode-hook and |
2f790b20 JB |
176 | inferior-scheme-mode-hook (in that order). |
177 | ||
178 | You can send text to the inferior Scheme process from other buffers containing | |
80e0fd4c | 179 | Scheme source. |
2f790b20 JB |
180 | switch-to-scheme switches the current buffer to the Scheme process buffer. |
181 | scheme-send-definition sends the current definition to the Scheme process. | |
182 | scheme-compile-definition compiles the current definition. | |
183 | scheme-send-region sends the current region to the Scheme process. | |
184 | scheme-compile-region compiles the current region. | |
185 | ||
186 | scheme-send-definition-and-go, scheme-compile-definition-and-go, | |
187 | scheme-send-region-and-go, and scheme-compile-region-and-go | |
188 | switch to the Scheme process buffer after sending their text. | |
189 | For information on running multiple processes in multiple buffers, see | |
190 | documentation for variable scheme-buffer. | |
191 | ||
192 | Commands: | |
80e0fd4c | 193 | Return after the end of the process' output sends the text from the |
2f790b20 JB |
194 | end of process to point. |
195 | Return before the end of the process' output copies the sexp ending at point | |
196 | to the end of the process' output, and sends it. | |
197 | Delete converts tabs to spaces as it moves back. | |
198 | Tab indents for Scheme; with argument, shifts rest | |
199 | of expression rigidly with the current line. | |
200 | C-M-q does Tab on each line starting within following expression. | |
201 | Paragraphs are separated only by blank lines. Semicolons start comments. | |
202 | If you accidentally suspend your process, use \\[comint-continue-subjob] | |
203 | to continue it." | |
c59e5c82 | 204 | ;; Customize in inferior-scheme-mode-hook |
9f370a90 | 205 | (setq comint-prompt-regexp "^[^>\n]*>+ *") ; OK for cscheme, oaklisp, T,... |
2f790b20 | 206 | (scheme-mode-variables) |
7465eb38 | 207 | (setq mode-line-process '(":%s")) |
2f790b20 | 208 | (setq comint-input-filter (function scheme-input-filter)) |
e3f9c7f8 | 209 | (setq comint-get-old-input (function scheme-get-old-input))) |
2f790b20 | 210 | |
4bef9110 | 211 | (defcustom inferior-scheme-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'" |
2f790b20 | 212 | "*Input matching this regexp are not saved on the history list. |
4bef9110 SE |
213 | Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters." |
214 | :type 'regexp | |
215 | :group 'cmuscheme) | |
2f790b20 | 216 | |
67f3e2fd | 217 | (defun scheme-input-filter (str) |
80e0fd4c | 218 | "Don't save anything matching `inferior-scheme-filter-regexp'." |
67f3e2fd RS |
219 | (not (string-match inferior-scheme-filter-regexp str))) |
220 | ||
2f790b20 | 221 | (defun scheme-get-old-input () |
80e0fd4c | 222 | "Snarf the sexp ending at point." |
2f790b20 JB |
223 | (save-excursion |
224 | (let ((end (point))) | |
225 | (backward-sexp) | |
226 | (buffer-substring (point) end)))) | |
227 | ||
228 | (defun scheme-args-to-list (string) | |
229 | (let ((where (string-match "[ \t]" string))) | |
230 | (cond ((null where) (list string)) | |
231 | ((not (= where 0)) | |
232 | (cons (substring string 0 where) | |
233 | (scheme-args-to-list (substring string (+ 1 where) | |
234 | (length string))))) | |
235 | (t (let ((pos (string-match "[^ \t]" string))) | |
236 | (if (null pos) | |
237 | nil | |
238 | (scheme-args-to-list (substring string pos | |
239 | (length string))))))))) | |
240 | ||
a0338514 | 241 | ;;;###autoload |
2f790b20 | 242 | (defun run-scheme (cmd) |
6f048d26 | 243 | "Run an inferior Scheme process, input and output via buffer `*scheme*'. |
349a5b09 | 244 | If there is a process already running in `*scheme*', switch to that buffer. |
2f790b20 | 245 | With argument, allows you to edit the command line (default is value |
6f048d26 | 246 | of `scheme-program-name'). |
00358595 JB |
247 | If the file `~/.emacs_SCHEMENAME' or `~/.emacs.d/init_SCHEMENAME.scm' exists, |
248 | it is given as initial input. | |
6f048d26 EZ |
249 | Note that this may lose due to a timing error if the Scheme processor |
250 | discards input when it starts up. | |
251 | Runs the hook `inferior-scheme-mode-hook' \(after the `comint-mode-hook' | |
252 | is run). | |
2f790b20 JB |
253 | \(Type \\[describe-mode] in the process buffer for a list of commands.)" |
254 | ||
255 | (interactive (list (if current-prefix-arg | |
80e0fd4c DL |
256 | (read-string "Run Scheme: " scheme-program-name) |
257 | scheme-program-name))) | |
2f790b20 JB |
258 | (if (not (comint-check-proc "*scheme*")) |
259 | (let ((cmdlist (scheme-args-to-list cmd))) | |
260 | (set-buffer (apply 'make-comint "scheme" (car cmdlist) | |
6f048d26 | 261 | (scheme-start-file (car cmdlist)) (cdr cmdlist))) |
2f790b20 | 262 | (inferior-scheme-mode))) |
80e0fd4c | 263 | (setq scheme-program-name cmd) |
2f790b20 | 264 | (setq scheme-buffer "*scheme*") |
349a5b09 RS |
265 | (pop-to-buffer "*scheme*")) |
266 | ;;;###autoload (add-hook 'same-window-buffer-names "*scheme*") | |
2f790b20 | 267 | |
6f048d26 EZ |
268 | (defun scheme-start-file (prog) |
269 | "Return the name of the start file corresponding to PROG. | |
270 | Search in the directories \"~\" and \"~/.emacs.d\", in this | |
271 | order. Return nil if no start file found." | |
9a5cd478 EZ |
272 | (let* ((progname (file-name-nondirectory prog)) |
273 | (start-file (concat "~/.emacs_" progname)) | |
5a96c751 | 274 | (alt-start-file (concat user-emacs-directory "init_" progname ".scm"))) |
6f048d26 EZ |
275 | (if (file-exists-p start-file) |
276 | start-file | |
00358595 | 277 | (and (file-exists-p alt-start-file) alt-start-file)))) |
6f048d26 | 278 | |
2f790b20 JB |
279 | (defun scheme-send-region (start end) |
280 | "Send the current region to the inferior Scheme process." | |
281 | (interactive "r") | |
282 | (comint-send-region (scheme-proc) start end) | |
283 | (comint-send-string (scheme-proc) "\n")) | |
284 | ||
285 | (defun scheme-send-definition () | |
286 | "Send the current definition to the inferior Scheme process." | |
287 | (interactive) | |
288 | (save-excursion | |
289 | (end-of-defun) | |
290 | (let ((end (point))) | |
291 | (beginning-of-defun) | |
292 | (scheme-send-region (point) end)))) | |
293 | ||
294 | (defun scheme-send-last-sexp () | |
295 | "Send the previous sexp to the inferior Scheme process." | |
296 | (interactive) | |
297 | (scheme-send-region (save-excursion (backward-sexp) (point)) (point))) | |
298 | ||
4bef9110 SE |
299 | (defcustom scheme-compile-exp-command "(compile '%s)" |
300 | "*Template for issuing commands to compile arbitrary Scheme expressions." | |
301 | :type 'string | |
302 | :group 'cmuscheme) | |
2f790b20 JB |
303 | |
304 | (defun scheme-compile-region (start end) | |
ff11d0d9 | 305 | "Compile the current region in the inferior Scheme process. |
2f790b20 JB |
306 | \(A BEGIN is wrapped around the region: (BEGIN <region>))" |
307 | (interactive "r") | |
308 | (comint-send-string (scheme-proc) (format scheme-compile-exp-command | |
309 | (format "(begin %s)" | |
310 | (buffer-substring start end)))) | |
311 | (comint-send-string (scheme-proc) "\n")) | |
312 | ||
313 | (defun scheme-compile-definition () | |
314 | "Compile the current definition in the inferior Scheme process." | |
315 | (interactive) | |
316 | (save-excursion | |
317 | (end-of-defun) | |
318 | (let ((end (point))) | |
319 | (beginning-of-defun) | |
320 | (scheme-compile-region (point) end)))) | |
321 | ||
6f048d26 EZ |
322 | (defcustom scheme-trace-command "(trace %s)" |
323 | "*Template for issuing commands to trace a Scheme procedure. | |
324 | Some Scheme implementations might require more elaborate commands here. | |
325 | For PLT-Scheme, e.g., one should use | |
326 | ||
327 | (setq scheme-trace-command \"(begin (require (lib \\\"trace.ss\\\")) (trace %s))\") | |
328 | ||
329 | For Scheme 48 and Scsh use \",trace %s\"." | |
330 | :type 'string | |
331 | :group 'cmuscheme) | |
332 | ||
333 | (defcustom scheme-untrace-command "(untrace %s)" | |
334 | "*Template for switching off tracing of a Scheme procedure. | |
335 | Scheme 48 and Scsh users should set this variable to \",untrace %s\"." | |
336 | ||
337 | :type 'string | |
338 | :group 'cmuscheme) | |
339 | ||
340 | (defun scheme-trace-procedure (proc &optional untrace) | |
341 | "Trace procedure PROC in the inferior Scheme process. | |
342 | With a prefix argument switch off tracing of procedure PROC." | |
343 | (interactive | |
344 | (list (let ((current (symbol-at-point)) | |
345 | (action (if current-prefix-arg "Untrace" "Trace"))) | |
346 | (if current | |
347 | (read-string (format "%s procedure [%s]: " action current) nil nil (symbol-name current)) | |
348 | (read-string (format "%s procedure: " action)))) | |
349 | current-prefix-arg)) | |
350 | (when (= (length proc) 0) | |
351 | (error "Invalid procedure name")) | |
352 | (comint-send-string (scheme-proc) | |
28a205fe | 353 | (format |
6f048d26 EZ |
354 | (if untrace scheme-untrace-command scheme-trace-command) |
355 | proc)) | |
356 | (comint-send-string (scheme-proc) "\n")) | |
357 | ||
358 | (defcustom scheme-macro-expand-command "(expand %s)" | |
359 | "*Template for macro-expanding a Scheme form. | |
360 | For Scheme 48 and Scsh use \",expand %s\"." | |
361 | :type 'string | |
362 | :group 'cmuscheme) | |
363 | ||
364 | (defun scheme-expand-current-form () | |
365 | "Macro-expand the form at point in the inferior Scheme process." | |
366 | (interactive) | |
367 | (let ((current-form (scheme-form-at-point))) | |
368 | (if current-form | |
369 | (progn | |
370 | (comint-send-string (scheme-proc) | |
28a205fe | 371 | (format |
6f048d26 EZ |
372 | scheme-macro-expand-command |
373 | current-form)) | |
28a205fe | 374 | (comint-send-string (scheme-proc) "\n")) |
6f048d26 EZ |
375 | (error "Not at a form")))) |
376 | ||
377 | (defun scheme-form-at-point () | |
378 | (let ((next-sexp (thing-at-point 'sexp))) | |
379 | (if (and next-sexp (string-equal (substring next-sexp 0 1) "(")) | |
380 | next-sexp | |
381 | (save-excursion | |
382 | (backward-up-list) | |
383 | (scheme-form-at-point))))) | |
384 | ||
2f790b20 JB |
385 | (defun switch-to-scheme (eob-p) |
386 | "Switch to the scheme process buffer. | |
80e0fd4c | 387 | With argument, position cursor at end of buffer." |
2f790b20 | 388 | (interactive "P") |
6f048d26 EZ |
389 | (if (or (and scheme-buffer (get-buffer scheme-buffer)) |
390 | (scheme-interactively-start-process)) | |
2f790b20 | 391 | (pop-to-buffer scheme-buffer) |
6f048d26 EZ |
392 | (error "No current process buffer. See variable `scheme-buffer'")) |
393 | (when eob-p | |
394 | (push-mark) | |
395 | (goto-char (point-max)))) | |
2f790b20 JB |
396 | |
397 | (defun scheme-send-region-and-go (start end) | |
ff11d0d9 CZ |
398 | "Send the current region to the inferior Scheme process. |
399 | Then switch to the process buffer." | |
2f790b20 JB |
400 | (interactive "r") |
401 | (scheme-send-region start end) | |
402 | (switch-to-scheme t)) | |
403 | ||
404 | (defun scheme-send-definition-and-go () | |
80e0fd4c | 405 | "Send the current definition to the inferior Scheme. |
ff11d0d9 | 406 | Then switch to the process buffer." |
2f790b20 JB |
407 | (interactive) |
408 | (scheme-send-definition) | |
409 | (switch-to-scheme t)) | |
410 | ||
411 | (defun scheme-compile-definition-and-go () | |
80e0fd4c | 412 | "Compile the current definition in the inferior Scheme. |
ff11d0d9 | 413 | Then switch to the process buffer." |
2f790b20 JB |
414 | (interactive) |
415 | (scheme-compile-definition) | |
416 | (switch-to-scheme t)) | |
417 | ||
418 | (defun scheme-compile-region-and-go (start end) | |
80e0fd4c | 419 | "Compile the current region in the inferior Scheme. |
ff11d0d9 | 420 | Then switch to the process buffer." |
2f790b20 JB |
421 | (interactive "r") |
422 | (scheme-compile-region start end) | |
423 | (switch-to-scheme t)) | |
424 | ||
4bef9110 | 425 | (defcustom scheme-source-modes '(scheme-mode) |
2f790b20 JB |
426 | "*Used to determine if a buffer contains Scheme source code. |
427 | If it's loaded into a buffer that is in one of these major modes, it's | |
80e0fd4c | 428 | considered a scheme source file by `scheme-load-file' and `scheme-compile-file'. |
4bef9110 SE |
429 | Used by these commands to determine defaults." |
430 | :type '(repeat function) | |
431 | :group 'cmuscheme) | |
2f790b20 JB |
432 | |
433 | (defvar scheme-prev-l/c-dir/file nil | |
ff11d0d9 | 434 | "Caches the last (directory . file) pair. |
80e0fd4c | 435 | Caches the last pair used in the last `scheme-load-file' or |
c59e5c82 JB |
436 | `scheme-compile-file' command. Used for determining the default |
437 | in the next one.") | |
2f790b20 JB |
438 | |
439 | (defun scheme-load-file (file-name) | |
80e0fd4c | 440 | "Load a Scheme file FILE-NAME into the inferior Scheme process." |
2f790b20 | 441 | (interactive (comint-get-source "Load Scheme file: " scheme-prev-l/c-dir/file |
0ff9b955 | 442 | scheme-source-modes t)) ; t because `load' |
2f790b20 JB |
443 | ; needs an exact name |
444 | (comint-check-source file-name) ; Check to see if buffer needs saved. | |
445 | (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name) | |
446 | (file-name-nondirectory file-name))) | |
447 | (comint-send-string (scheme-proc) (concat "(load \"" | |
448 | file-name | |
449 | "\"\)\n"))) | |
450 | ||
451 | (defun scheme-compile-file (file-name) | |
80e0fd4c | 452 | "Compile a Scheme file FILE-NAME in the inferior Scheme process." |
2f790b20 JB |
453 | (interactive (comint-get-source "Compile Scheme file: " |
454 | scheme-prev-l/c-dir/file | |
455 | scheme-source-modes | |
0ff9b955 | 456 | nil)) ; nil because COMPILE doesn't |
2f790b20 JB |
457 | ; need an exact name. |
458 | (comint-check-source file-name) ; Check to see if buffer needs saved. | |
459 | (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name) | |
460 | (file-name-nondirectory file-name))) | |
461 | (comint-send-string (scheme-proc) (concat "(compile-file \"" | |
462 | file-name | |
463 | "\"\)\n"))) | |
464 | ||
465 | \f | |
466 | (defvar scheme-buffer nil "*The current scheme process buffer. | |
467 | ||
468 | MULTIPLE PROCESS SUPPORT | |
469 | =========================================================================== | |
470 | Cmuscheme.el supports, in a fairly simple fashion, running multiple Scheme | |
80e0fd4c DL |
471 | processes. To run multiple Scheme processes, you start the first up with |
472 | \\[run-scheme]. It will be in a buffer named *scheme*. Rename this buffer | |
473 | with \\[rename-buffer]. You may now start up a new process with another | |
474 | \\[run-scheme]. It will be in a new buffer, named *scheme*. You can | |
2f790b20 JB |
475 | switch between the different process buffers with \\[switch-to-buffer]. |
476 | ||
477 | Commands that send text from source buffers to Scheme processes -- | |
80e0fd4c DL |
478 | like `scheme-send-definition' or `scheme-compile-region' -- have to choose a |
479 | process to send to, when you have more than one Scheme process around. This | |
480 | is determined by the global variable `scheme-buffer'. Suppose you | |
2f790b20 JB |
481 | have three inferior Schemes running: |
482 | Buffer Process | |
483 | foo scheme | |
484 | bar scheme<2> | |
485 | *scheme* scheme<3> | |
486 | If you do a \\[scheme-send-definition-and-go] command on some Scheme source | |
487 | code, what process do you send it to? | |
488 | ||
80e0fd4c | 489 | - If you're in a process buffer (foo, bar, or *scheme*), |
2f790b20 JB |
490 | you send it to that process. |
491 | - If you're in some other buffer (e.g., a source file), you | |
80e0fd4c DL |
492 | send it to the process attached to buffer `scheme-buffer'. |
493 | This process selection is performed by function `scheme-proc'. | |
2f790b20 | 494 | |
80e0fd4c DL |
495 | Whenever \\[run-scheme] fires up a new process, it resets `scheme-buffer' |
496 | to be the new process's buffer. If you only run one process, this will | |
497 | do the right thing. If you run multiple processes, you can change | |
498 | `scheme-buffer' to another process buffer with \\[set-variable]. | |
2f790b20 | 499 | |
80e0fd4c | 500 | More sophisticated approaches are, of course, possible. If you find yourself |
2f790b20 JB |
501 | needing to switch back and forth between multiple processes frequently, |
502 | you may wish to consider ilisp.el, a larger, more sophisticated package | |
80e0fd4c DL |
503 | for running inferior Lisp and Scheme processes. The approach taken here is |
504 | for a minimal, simple implementation. Feel free to extend it.") | |
2f790b20 JB |
505 | |
506 | (defun scheme-proc () | |
6f048d26 EZ |
507 | "Return the current Scheme process, starting one if necessary. |
508 | See variable `scheme-buffer'." | |
509 | (unless (and scheme-buffer | |
28a205fe | 510 | (get-buffer scheme-buffer) |
6f048d26 EZ |
511 | (comint-check-proc scheme-buffer)) |
512 | (scheme-interactively-start-process)) | |
513 | (or (scheme-get-process) | |
514 | (error "No current process. See variable `scheme-buffer'"))) | |
515 | ||
516 | (defun scheme-get-process () | |
517 | "Return the current Scheme process or nil if none is running." | |
518 | (get-buffer-process (if (eq major-mode 'inferior-scheme-mode) | |
519 | (current-buffer) | |
520 | scheme-buffer))) | |
521 | ||
522 | (defun scheme-interactively-start-process (&optional cmd) | |
523 | "Start an inferior Scheme process. Return the process started. | |
524 | Since this command is run implicitly, always ask the user for the | |
525 | command to run." | |
526 | (save-window-excursion | |
527 | (run-scheme (read-string "Run Scheme: " scheme-program-name)))) | |
2f790b20 | 528 | |
c59e5c82 | 529 | ;;; Do the user's customization... |
2f790b20 | 530 | |
4bef9110 | 531 | (defcustom cmuscheme-load-hook nil |
2f790b20 | 532 | "This hook is run when cmuscheme is loaded in. |
4bef9110 SE |
533 | This is a good place to put keybindings." |
534 | :type 'hook | |
535 | :group 'cmuscheme) | |
71296446 | 536 | |
2f790b20 JB |
537 | (run-hooks 'cmuscheme-load-hook) |
538 | ||
49116ac0 | 539 | (provide 'cmuscheme) |
c0274f38 | 540 | |
7147c177 | 541 | ;; arch-tag: e8795f4a-c496-45a2-97b4-8e0f2a2c57d2 |
c0274f38 | 542 | ;;; cmuscheme.el ends here |