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73217411 | 1 | ;;; cl-macs.el --- Common Lisp macros -*-byte-compile-dynamic: t;-*- |
fcd73769 | 2 | |
d59c3137 GM |
3 | ;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005, 2006 |
4 | ;; Free Software Foundation, Inc. | |
fcd73769 RS |
5 | |
6 | ;; Author: Dave Gillespie <daveg@synaptics.com> | |
7 | ;; Version: 2.02 | |
8 | ;; Keywords: extensions | |
9 | ||
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 | |
7c938215 | 14 | ;; the Free Software Foundation; either version 2, or (at your option) |
fcd73769 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 |
3a35cf56 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
fcd73769 | 26 | |
07b3798c | 27 | ;;; Commentary: |
fcd73769 RS |
28 | |
29 | ;; These are extensions to Emacs Lisp that provide a degree of | |
30 | ;; Common Lisp compatibility, beyond what is already built-in | |
31 | ;; in Emacs Lisp. | |
32 | ;; | |
33 | ;; This package was written by Dave Gillespie; it is a complete | |
34 | ;; rewrite of Cesar Quiroz's original cl.el package of December 1986. | |
35 | ;; | |
fcd73769 RS |
36 | ;; Bug reports, comments, and suggestions are welcome! |
37 | ||
38 | ;; This file contains the portions of the Common Lisp extensions | |
39 | ;; package which should be autoloaded, but need only be present | |
40 | ;; if the compiler or interpreter is used---this file is not | |
41 | ;; necessary for executing compiled code. | |
42 | ||
43 | ;; See cl.el for Change Log. | |
44 | ||
45 | ||
07b3798c | 46 | ;;; Code: |
fcd73769 RS |
47 | |
48 | (or (memq 'cl-19 features) | |
49 | (error "Tried to load `cl-macs' before `cl'!")) | |
50 | ||
51 | ||
fcd73769 RS |
52 | (defmacro cl-pop2 (place) |
53 | (list 'prog1 (list 'car (list 'cdr place)) | |
54 | (list 'setq place (list 'cdr (list 'cdr place))))) | |
fcd73769 RS |
55 | (put 'cl-pop2 'edebug-form-spec 'edebug-sexps) |
56 | ||
fcd73769 RS |
57 | (defvar cl-optimize-safety) |
58 | (defvar cl-optimize-speed) | |
59 | ||
60 | ||
61 | ;;; This kludge allows macros which use cl-transform-function-property | |
62 | ;;; to be called at compile-time. | |
63 | ||
64 | (require | |
65 | (progn | |
fcd73769 RS |
66 | (or (fboundp 'cl-transform-function-property) |
67 | (defalias 'cl-transform-function-property | |
68 | (function (lambda (n p f) | |
69 | (list 'put (list 'quote n) (list 'quote p) | |
70 | (list 'function (cons 'lambda f))))))) | |
71 | (car (or features (setq features (list 'cl-kludge)))))) | |
72 | ||
73 | ||
74 | ;;; Initialization. | |
75 | ||
76 | (defvar cl-old-bc-file-form nil) | |
77 | ||
fcd73769 | 78 | (defun cl-compile-time-init () |
fcd73769 RS |
79 | (run-hooks 'cl-hack-bytecomp-hook)) |
80 | ||
81 | ||
b7b95a1e DL |
82 | ;;; Some predicates for analyzing Lisp forms. These are used by various |
83 | ;;; macro expanders to optimize the results in certain common cases. | |
84 | ||
85 | (defconst cl-simple-funcs '(car cdr nth aref elt if and or + - 1+ 1- min max | |
86 | car-safe cdr-safe progn prog1 prog2)) | |
87 | (defconst cl-safe-funcs '(* / % length memq list vector vectorp | |
88 | < > <= >= = error)) | |
89 | ||
90 | ;;; Check if no side effects, and executes quickly. | |
91 | (defun cl-simple-expr-p (x &optional size) | |
92 | (or size (setq size 10)) | |
93 | (if (and (consp x) (not (memq (car x) '(quote function function*)))) | |
94 | (and (symbolp (car x)) | |
95 | (or (memq (car x) cl-simple-funcs) | |
96 | (get (car x) 'side-effect-free)) | |
97 | (progn | |
98 | (setq size (1- size)) | |
99 | (while (and (setq x (cdr x)) | |
100 | (setq size (cl-simple-expr-p (car x) size)))) | |
101 | (and (null x) (>= size 0) size))) | |
102 | (and (> size 0) (1- size)))) | |
103 | ||
104 | (defun cl-simple-exprs-p (xs) | |
105 | (while (and xs (cl-simple-expr-p (car xs))) | |
106 | (setq xs (cdr xs))) | |
107 | (not xs)) | |
108 | ||
109 | ;;; Check if no side effects. | |
110 | (defun cl-safe-expr-p (x) | |
111 | (or (not (and (consp x) (not (memq (car x) '(quote function function*))))) | |
112 | (and (symbolp (car x)) | |
113 | (or (memq (car x) cl-simple-funcs) | |
114 | (memq (car x) cl-safe-funcs) | |
115 | (get (car x) 'side-effect-free)) | |
116 | (progn | |
117 | (while (and (setq x (cdr x)) (cl-safe-expr-p (car x)))) | |
118 | (null x))))) | |
119 | ||
120 | ;;; Check if constant (i.e., no side effects or dependencies). | |
121 | (defun cl-const-expr-p (x) | |
122 | (cond ((consp x) | |
123 | (or (eq (car x) 'quote) | |
124 | (and (memq (car x) '(function function*)) | |
125 | (or (symbolp (nth 1 x)) | |
126 | (and (eq (car-safe (nth 1 x)) 'lambda) 'func))))) | |
127 | ((symbolp x) (and (memq x '(nil t)) t)) | |
128 | (t t))) | |
129 | ||
130 | (defun cl-const-exprs-p (xs) | |
131 | (while (and xs (cl-const-expr-p (car xs))) | |
132 | (setq xs (cdr xs))) | |
133 | (not xs)) | |
134 | ||
135 | (defun cl-const-expr-val (x) | |
136 | (and (eq (cl-const-expr-p x) t) (if (consp x) (nth 1 x) x))) | |
137 | ||
138 | (defun cl-expr-access-order (x v) | |
139 | (if (cl-const-expr-p x) v | |
140 | (if (consp x) | |
141 | (progn | |
142 | (while (setq x (cdr x)) (setq v (cl-expr-access-order (car x) v))) | |
143 | v) | |
144 | (if (eq x (car v)) (cdr v) '(t))))) | |
145 | ||
146 | ;;; Count number of times X refers to Y. Return nil for 0 times. | |
147 | (defun cl-expr-contains (x y) | |
148 | (cond ((equal y x) 1) | |
149 | ((and (consp x) (not (memq (car-safe x) '(quote function function*)))) | |
150 | (let ((sum 0)) | |
151 | (while x | |
152 | (setq sum (+ sum (or (cl-expr-contains (pop x) y) 0)))) | |
153 | (and (> sum 0) sum))) | |
154 | (t nil))) | |
155 | ||
156 | (defun cl-expr-contains-any (x y) | |
157 | (while (and y (not (cl-expr-contains x (car y)))) (pop y)) | |
158 | y) | |
159 | ||
160 | ;;; Check whether X may depend on any of the symbols in Y. | |
161 | (defun cl-expr-depends-p (x y) | |
162 | (and (not (cl-const-expr-p x)) | |
163 | (or (not (cl-safe-expr-p x)) (cl-expr-contains-any x y)))) | |
164 | ||
fcd73769 RS |
165 | ;;; Symbols. |
166 | ||
167 | (defvar *gensym-counter*) | |
a766dfa1 | 168 | (defun gensym (&optional prefix) |
fcd73769 RS |
169 | "Generate a new uninterned symbol. |
170 | The name is made by appending a number to PREFIX, default \"G\"." | |
a766dfa1 JB |
171 | (let ((pfix (if (stringp prefix) prefix "G")) |
172 | (num (if (integerp prefix) prefix | |
fcd73769 RS |
173 | (prog1 *gensym-counter* |
174 | (setq *gensym-counter* (1+ *gensym-counter*)))))) | |
a766dfa1 | 175 | (make-symbol (format "%s%d" pfix num)))) |
fcd73769 | 176 | |
a766dfa1 | 177 | (defun gentemp (&optional prefix) |
fcd73769 RS |
178 | "Generate a new interned symbol with a unique name. |
179 | The name is made by appending a number to PREFIX, default \"G\"." | |
a766dfa1 | 180 | (let ((pfix (if (stringp prefix) prefix "G")) |
fcd73769 | 181 | name) |
a766dfa1 | 182 | (while (intern-soft (setq name (format "%s%d" pfix *gensym-counter*))) |
fcd73769 RS |
183 | (setq *gensym-counter* (1+ *gensym-counter*))) |
184 | (intern name))) | |
185 | ||
186 | ||
187 | ;;; Program structure. | |
188 | ||
189 | (defmacro defun* (name args &rest body) | |
69d8fb1e | 190 | "Define NAME as a function. |
fcd73769 | 191 | Like normal `defun', except ARGLIST allows full Common Lisp conventions, |
69d8fb1e SM |
192 | and BODY is implicitly surrounded by (block NAME ...). |
193 | ||
194 | \(fn NAME ARGLIST [DOCSTRING] BODY...)" | |
fcd73769 RS |
195 | (let* ((res (cl-transform-lambda (cons args body) name)) |
196 | (form (list* 'defun name (cdr res)))) | |
197 | (if (car res) (list 'progn (car res) form) form))) | |
198 | ||
199 | (defmacro defmacro* (name args &rest body) | |
69d8fb1e | 200 | "Define NAME as a macro. |
fcd73769 | 201 | Like normal `defmacro', except ARGLIST allows full Common Lisp conventions, |
69d8fb1e SM |
202 | and BODY is implicitly surrounded by (block NAME ...). |
203 | ||
204 | \(fn NAME ARGLIST [DOCSTRING] BODY...)" | |
fcd73769 RS |
205 | (let* ((res (cl-transform-lambda (cons args body) name)) |
206 | (form (list* 'defmacro name (cdr res)))) | |
207 | (if (car res) (list 'progn (car res) form) form))) | |
208 | ||
209 | (defmacro function* (func) | |
64a4c526 | 210 | "Introduce a function. |
3187ba1c JB |
211 | Like normal `function', except that if argument is a lambda form, |
212 | its argument list allows full Common Lisp conventions." | |
fcd73769 RS |
213 | (if (eq (car-safe func) 'lambda) |
214 | (let* ((res (cl-transform-lambda (cdr func) 'cl-none)) | |
215 | (form (list 'function (cons 'lambda (cdr res))))) | |
216 | (if (car res) (list 'progn (car res) form) form)) | |
217 | (list 'function func))) | |
218 | ||
219 | (defun cl-transform-function-property (func prop form) | |
220 | (let ((res (cl-transform-lambda form func))) | |
221 | (append '(progn) (cdr (cdr (car res))) | |
222 | (list (list 'put (list 'quote func) (list 'quote prop) | |
223 | (list 'function (cons 'lambda (cdr res)))))))) | |
224 | ||
225 | (defconst lambda-list-keywords | |
226 | '(&optional &rest &key &allow-other-keys &aux &whole &body &environment)) | |
227 | ||
228 | (defvar cl-macro-environment nil) | |
229 | (defvar bind-block) (defvar bind-defs) (defvar bind-enquote) | |
230 | (defvar bind-inits) (defvar bind-lets) (defvar bind-forms) | |
231 | ||
232 | (defun cl-transform-lambda (form bind-block) | |
69d8fb1e | 233 | (let* ((args (car form)) (body (cdr form)) (orig-args args) |
fcd73769 RS |
234 | (bind-defs nil) (bind-enquote nil) |
235 | (bind-inits nil) (bind-lets nil) (bind-forms nil) | |
236 | (header nil) (simple-args nil)) | |
a5ad278d EZ |
237 | (while (or (stringp (car body)) |
238 | (memq (car-safe (car body)) '(interactive declare))) | |
69d8fb1e | 239 | (push (pop body) header)) |
fcd73769 RS |
240 | (setq args (if (listp args) (copy-list args) (list '&rest args))) |
241 | (let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p))))) | |
242 | (if (setq bind-defs (cadr (memq '&cl-defs args))) | |
243 | (setq args (delq '&cl-defs (delq bind-defs args)) | |
244 | bind-defs (cadr bind-defs))) | |
245 | (if (setq bind-enquote (memq '&cl-quote args)) | |
246 | (setq args (delq '&cl-quote args))) | |
247 | (if (memq '&whole args) (error "&whole not currently implemented")) | |
248 | (let* ((p (memq '&environment args)) (v (cadr p))) | |
249 | (if p (setq args (nconc (delq (car p) (delq v args)) | |
250 | (list '&aux (list v 'cl-macro-environment)))))) | |
251 | (while (and args (symbolp (car args)) | |
252 | (not (memq (car args) '(nil &rest &body &key &aux))) | |
253 | (not (and (eq (car args) '&optional) | |
254 | (or bind-defs (consp (cadr args)))))) | |
69d8fb1e | 255 | (push (pop args) simple-args)) |
fcd73769 RS |
256 | (or (eq bind-block 'cl-none) |
257 | (setq body (list (list* 'block bind-block body)))) | |
258 | (if (null args) | |
259 | (list* nil (nreverse simple-args) (nconc (nreverse header) body)) | |
69d8fb1e | 260 | (if (memq '&optional simple-args) (push '&optional args)) |
fcd73769 RS |
261 | (cl-do-arglist args nil (- (length simple-args) |
262 | (if (memq '&optional simple-args) 1 0))) | |
263 | (setq bind-lets (nreverse bind-lets)) | |
264 | (list* (and bind-inits (list* 'eval-when '(compile load eval) | |
265 | (nreverse bind-inits))) | |
266 | (nconc (nreverse simple-args) | |
69d8fb1e SM |
267 | (list '&rest (car (pop bind-lets)))) |
268 | (nconc (let ((hdr (nreverse header))) | |
b7b95a1e | 269 | (require 'help-fns) |
69d8fb1e | 270 | (cons (help-add-fundoc-usage |
1360464e SM |
271 | (if (stringp (car hdr)) (pop hdr)) |
272 | ;; orig-args can contain &cl-defs (an internal CL | |
273 | ;; thingy that I do not understand), so remove it. | |
274 | (let ((x (memq '&cl-defs orig-args))) | |
275 | (if (null x) orig-args | |
276 | (delq (car x) (remq (cadr x) orig-args))))) | |
69d8fb1e | 277 | hdr)) |
fcd73769 RS |
278 | (list (nconc (list 'let* bind-lets) |
279 | (nreverse bind-forms) body))))))) | |
280 | ||
281 | (defun cl-do-arglist (args expr &optional num) ; uses bind-* | |
282 | (if (nlistp args) | |
283 | (if (or (memq args lambda-list-keywords) (not (symbolp args))) | |
284 | (error "Invalid argument name: %s" args) | |
69d8fb1e | 285 | (push (list args expr) bind-lets)) |
fcd73769 RS |
286 | (setq args (copy-list args)) |
287 | (let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p))))) | |
288 | (let ((p (memq '&body args))) (if p (setcar p '&rest))) | |
289 | (if (memq '&environment args) (error "&environment used incorrectly")) | |
290 | (let ((save-args args) | |
291 | (restarg (memq '&rest args)) | |
292 | (safety (if (cl-compiling-file) cl-optimize-safety 3)) | |
293 | (keys nil) | |
294 | (laterarg nil) (exactarg nil) minarg) | |
295 | (or num (setq num 0)) | |
296 | (if (listp (cadr restarg)) | |
e542ea4b | 297 | (setq restarg (make-symbol "--cl-rest--")) |
fcd73769 | 298 | (setq restarg (cadr restarg))) |
69d8fb1e | 299 | (push (list restarg expr) bind-lets) |
fcd73769 | 300 | (if (eq (car args) '&whole) |
69d8fb1e | 301 | (push (list (cl-pop2 args) restarg) bind-lets)) |
fcd73769 RS |
302 | (let ((p args)) |
303 | (setq minarg restarg) | |
304 | (while (and p (not (memq (car p) lambda-list-keywords))) | |
305 | (or (eq p args) (setq minarg (list 'cdr minarg))) | |
306 | (setq p (cdr p))) | |
307 | (if (memq (car p) '(nil &aux)) | |
308 | (setq minarg (list '= (list 'length restarg) | |
309 | (length (ldiff args p))) | |
310 | exactarg (not (eq args p))))) | |
311 | (while (and args (not (memq (car args) lambda-list-keywords))) | |
312 | (let ((poparg (list (if (or (cdr args) (not exactarg)) 'pop 'car) | |
313 | restarg))) | |
314 | (cl-do-arglist | |
69d8fb1e | 315 | (pop args) |
fcd73769 RS |
316 | (if (or laterarg (= safety 0)) poparg |
317 | (list 'if minarg poparg | |
318 | (list 'signal '(quote wrong-number-of-arguments) | |
319 | (list 'list (and (not (eq bind-block 'cl-none)) | |
320 | (list 'quote bind-block)) | |
321 | (list 'length restarg))))))) | |
322 | (setq num (1+ num) laterarg t)) | |
69d8fb1e | 323 | (while (and (eq (car args) '&optional) (pop args)) |
fcd73769 | 324 | (while (and args (not (memq (car args) lambda-list-keywords))) |
69d8fb1e | 325 | (let ((arg (pop args))) |
fcd73769 RS |
326 | (or (consp arg) (setq arg (list arg))) |
327 | (if (cddr arg) (cl-do-arglist (nth 2 arg) (list 'and restarg t))) | |
328 | (let ((def (if (cdr arg) (nth 1 arg) | |
329 | (or (car bind-defs) | |
330 | (nth 1 (assq (car arg) bind-defs))))) | |
331 | (poparg (list 'pop restarg))) | |
332 | (and def bind-enquote (setq def (list 'quote def))) | |
333 | (cl-do-arglist (car arg) | |
334 | (if def (list 'if restarg poparg def) poparg)) | |
335 | (setq num (1+ num)))))) | |
336 | (if (eq (car args) '&rest) | |
337 | (let ((arg (cl-pop2 args))) | |
338 | (if (consp arg) (cl-do-arglist arg restarg))) | |
339 | (or (eq (car args) '&key) (= safety 0) exactarg | |
69d8fb1e | 340 | (push (list 'if restarg |
fcd73769 RS |
341 | (list 'signal '(quote wrong-number-of-arguments) |
342 | (list 'list | |
343 | (and (not (eq bind-block 'cl-none)) | |
344 | (list 'quote bind-block)) | |
345 | (list '+ num (list 'length restarg))))) | |
346 | bind-forms))) | |
69d8fb1e | 347 | (while (and (eq (car args) '&key) (pop args)) |
fcd73769 | 348 | (while (and args (not (memq (car args) lambda-list-keywords))) |
69d8fb1e | 349 | (let ((arg (pop args))) |
dd441b46 | 350 | (or (consp arg) (setq arg (list arg))) |
fcd73769 RS |
351 | (let* ((karg (if (consp (car arg)) (caar arg) |
352 | (intern (format ":%s" (car arg))))) | |
353 | (varg (if (consp (car arg)) (cadar arg) (car arg))) | |
354 | (def (if (cdr arg) (cadr arg) | |
355 | (or (car bind-defs) (cadr (assq varg bind-defs))))) | |
dd441b46 | 356 | (look (list 'memq (list 'quote karg) restarg))) |
fcd73769 RS |
357 | (and def bind-enquote (setq def (list 'quote def))) |
358 | (if (cddr arg) | |
e542ea4b | 359 | (let* ((temp (or (nth 2 arg) (make-symbol "--cl-var--"))) |
fcd73769 RS |
360 | (val (list 'car (list 'cdr temp)))) |
361 | (cl-do-arglist temp look) | |
362 | (cl-do-arglist varg | |
363 | (list 'if temp | |
364 | (list 'prog1 val (list 'setq temp t)) | |
365 | def))) | |
366 | (cl-do-arglist | |
367 | varg | |
368 | (list 'car | |
369 | (list 'cdr | |
370 | (if (null def) | |
371 | look | |
372 | (list 'or look | |
373 | (if (eq (cl-const-expr-p def) t) | |
374 | (list | |
375 | 'quote | |
376 | (list nil (cl-const-expr-val def))) | |
377 | (list 'list nil def)))))))) | |
69d8fb1e | 378 | (push karg keys))))) |
fcd73769 | 379 | (setq keys (nreverse keys)) |
69d8fb1e | 380 | (or (and (eq (car args) '&allow-other-keys) (pop args)) |
fcd73769 | 381 | (null keys) (= safety 0) |
e542ea4b | 382 | (let* ((var (make-symbol "--cl-keys--")) |
fcd73769 RS |
383 | (allow '(:allow-other-keys)) |
384 | (check (list | |
385 | 'while var | |
386 | (list | |
387 | 'cond | |
388 | (list (list 'memq (list 'car var) | |
389 | (list 'quote (append keys allow))) | |
390 | (list 'setq var (list 'cdr (list 'cdr var)))) | |
dd441b46 GM |
391 | (list (list 'car |
392 | (list 'cdr | |
393 | (list 'memq (cons 'quote allow) | |
394 | restarg))) | |
fcd73769 RS |
395 | (list 'setq var nil)) |
396 | (list t | |
397 | (list | |
398 | 'error | |
399 | (format "Keyword argument %%s not one of %s" | |
400 | keys) | |
401 | (list 'car var))))))) | |
69d8fb1e SM |
402 | (push (list 'let (list (list var restarg)) check) bind-forms))) |
403 | (while (and (eq (car args) '&aux) (pop args)) | |
fcd73769 RS |
404 | (while (and args (not (memq (car args) lambda-list-keywords))) |
405 | (if (consp (car args)) | |
406 | (if (and bind-enquote (cadar args)) | |
407 | (cl-do-arglist (caar args) | |
69d8fb1e SM |
408 | (list 'quote (cadr (pop args)))) |
409 | (cl-do-arglist (caar args) (cadr (pop args)))) | |
410 | (cl-do-arglist (pop args) nil)))) | |
fcd73769 RS |
411 | (if args (error "Malformed argument list %s" save-args))))) |
412 | ||
413 | (defun cl-arglist-args (args) | |
414 | (if (nlistp args) (list args) | |
415 | (let ((res nil) (kind nil) arg) | |
416 | (while (consp args) | |
69d8fb1e | 417 | (setq arg (pop args)) |
fcd73769 | 418 | (if (memq arg lambda-list-keywords) (setq kind arg) |
69d8fb1e | 419 | (if (eq arg '&cl-defs) (pop args) |
fcd73769 RS |
420 | (and (consp arg) kind (setq arg (car arg))) |
421 | (and (consp arg) (cdr arg) (eq kind '&key) (setq arg (cadr arg))) | |
422 | (setq res (nconc res (cl-arglist-args arg)))))) | |
423 | (nconc res (and args (list args)))))) | |
424 | ||
425 | (defmacro destructuring-bind (args expr &rest body) | |
426 | (let* ((bind-lets nil) (bind-forms nil) (bind-inits nil) | |
427 | (bind-defs nil) (bind-block 'cl-none)) | |
428 | (cl-do-arglist (or args '(&aux)) expr) | |
429 | (append '(progn) bind-inits | |
430 | (list (nconc (list 'let* (nreverse bind-lets)) | |
431 | (nreverse bind-forms) body))))) | |
432 | ||
433 | ||
434 | ;;; The `eval-when' form. | |
435 | ||
436 | (defvar cl-not-toplevel nil) | |
437 | ||
438 | (defmacro eval-when (when &rest body) | |
69d8fb1e | 439 | "Control when BODY is evaluated. |
fcd73769 RS |
440 | If `compile' is in WHEN, BODY is evaluated when compiled at top-level. |
441 | If `load' is in WHEN, BODY is evaluated when loaded after top-level compile. | |
69d8fb1e SM |
442 | If `eval' is in WHEN, BODY is evaluated when interpreted or at non-top-level. |
443 | ||
444 | \(fn (WHEN...) BODY...)" | |
fcd73769 RS |
445 | (if (and (fboundp 'cl-compiling-file) (cl-compiling-file) |
446 | (not cl-not-toplevel) (not (boundp 'for-effect))) ; horrible kludge | |
64a4c526 | 447 | (let ((comp (or (memq 'compile when) (memq :compile-toplevel when))) |
fcd73769 | 448 | (cl-not-toplevel t)) |
64a4c526 | 449 | (if (or (memq 'load when) (memq :load-toplevel when)) |
fcd73769 RS |
450 | (if comp (cons 'progn (mapcar 'cl-compile-time-too body)) |
451 | (list* 'if nil nil body)) | |
452 | (progn (if comp (eval (cons 'progn body))) nil))) | |
64a4c526 | 453 | (and (or (memq 'eval when) (memq :execute when)) |
fcd73769 RS |
454 | (cons 'progn body)))) |
455 | ||
456 | (defun cl-compile-time-too (form) | |
457 | (or (and (symbolp (car-safe form)) (get (car-safe form) 'byte-hunk-handler)) | |
458 | (setq form (macroexpand | |
459 | form (cons '(eval-when) byte-compile-macro-environment)))) | |
460 | (cond ((eq (car-safe form) 'progn) | |
461 | (cons 'progn (mapcar 'cl-compile-time-too (cdr form)))) | |
462 | ((eq (car-safe form) 'eval-when) | |
463 | (let ((when (nth 1 form))) | |
64a4c526 | 464 | (if (or (memq 'eval when) (memq :execute when)) |
fcd73769 RS |
465 | (list* 'eval-when (cons 'compile when) (cddr form)) |
466 | form))) | |
467 | (t (eval form) form))) | |
468 | ||
fcd73769 RS |
469 | (defmacro load-time-value (form &optional read-only) |
470 | "Like `progn', but evaluates the body at load time. | |
471 | The result of the body appears to the compiler as a quoted constant." | |
472 | (if (cl-compiling-file) | |
473 | (let* ((temp (gentemp "--cl-load-time--")) | |
474 | (set (list 'set (list 'quote temp) form))) | |
475 | (if (and (fboundp 'byte-compile-file-form-defmumble) | |
476 | (boundp 'this-kind) (boundp 'that-one)) | |
477 | (fset 'byte-compile-file-form | |
478 | (list 'lambda '(form) | |
479 | (list 'fset '(quote byte-compile-file-form) | |
480 | (list 'quote | |
481 | (symbol-function 'byte-compile-file-form))) | |
482 | (list 'byte-compile-file-form (list 'quote set)) | |
483 | '(byte-compile-file-form form))) | |
484 | (print set (symbol-value 'outbuffer))) | |
485 | (list 'symbol-value (list 'quote temp))) | |
486 | (list 'quote (eval form)))) | |
487 | ||
488 | ||
489 | ;;; Conditional control structures. | |
490 | ||
491 | (defmacro case (expr &rest clauses) | |
3187ba1c | 492 | "Eval EXPR and choose among clauses on that value. |
fcd73769 RS |
493 | Each clause looks like (KEYLIST BODY...). EXPR is evaluated and compared |
494 | against each key in each KEYLIST; the corresponding BODY is evaluated. | |
495 | If no clause succeeds, case returns nil. A single atom may be used in | |
a8ea72a0 | 496 | place of a KEYLIST of one atom. A KEYLIST of t or `otherwise' is |
fcd73769 | 497 | allowed only in the final clause, and matches if no other keys match. |
3187ba1c JB |
498 | Key values are compared by `eql'. |
499 | \n(fn EXPR (KEYLIST BODY...)...)" | |
e542ea4b | 500 | (let* ((temp (if (cl-simple-expr-p expr 3) expr (make-symbol "--cl-var--"))) |
fcd73769 RS |
501 | (head-list nil) |
502 | (body (cons | |
503 | 'cond | |
504 | (mapcar | |
505 | (function | |
506 | (lambda (c) | |
507 | (cons (cond ((memq (car c) '(t otherwise)) t) | |
508 | ((eq (car c) 'ecase-error-flag) | |
509 | (list 'error "ecase failed: %s, %s" | |
510 | temp (list 'quote (reverse head-list)))) | |
511 | ((listp (car c)) | |
512 | (setq head-list (append (car c) head-list)) | |
513 | (list 'member* temp (list 'quote (car c)))) | |
514 | (t | |
515 | (if (memq (car c) head-list) | |
516 | (error "Duplicate key in case: %s" | |
517 | (car c))) | |
69d8fb1e | 518 | (push (car c) head-list) |
fcd73769 RS |
519 | (list 'eql temp (list 'quote (car c))))) |
520 | (or (cdr c) '(nil))))) | |
521 | clauses)))) | |
522 | (if (eq temp expr) body | |
523 | (list 'let (list (list temp expr)) body)))) | |
524 | ||
525 | (defmacro ecase (expr &rest clauses) | |
64a4c526 | 526 | "Like `case', but error if no case fits. |
3187ba1c JB |
527 | `otherwise'-clauses are not allowed. |
528 | \n(fn EXPR (KEYLIST BODY...)...)" | |
fcd73769 RS |
529 | (list* 'case expr (append clauses '((ecase-error-flag))))) |
530 | ||
531 | (defmacro typecase (expr &rest clauses) | |
3187ba1c | 532 | "Evals EXPR, chooses among clauses on that value. |
fcd73769 RS |
533 | Each clause looks like (TYPE BODY...). EXPR is evaluated and, if it |
534 | satisfies TYPE, the corresponding BODY is evaluated. If no clause succeeds, | |
a8ea72a0 | 535 | typecase returns nil. A TYPE of t or `otherwise' is allowed only in the |
3187ba1c JB |
536 | final clause, and matches if no other keys match. |
537 | \n(fn EXPR (TYPE BODY...)...)" | |
e542ea4b | 538 | (let* ((temp (if (cl-simple-expr-p expr 3) expr (make-symbol "--cl-var--"))) |
fcd73769 RS |
539 | (type-list nil) |
540 | (body (cons | |
541 | 'cond | |
542 | (mapcar | |
543 | (function | |
544 | (lambda (c) | |
545 | (cons (cond ((eq (car c) 'otherwise) t) | |
546 | ((eq (car c) 'ecase-error-flag) | |
547 | (list 'error "etypecase failed: %s, %s" | |
548 | temp (list 'quote (reverse type-list)))) | |
549 | (t | |
69d8fb1e | 550 | (push (car c) type-list) |
fcd73769 RS |
551 | (cl-make-type-test temp (car c)))) |
552 | (or (cdr c) '(nil))))) | |
553 | clauses)))) | |
554 | (if (eq temp expr) body | |
555 | (list 'let (list (list temp expr)) body)))) | |
556 | ||
557 | (defmacro etypecase (expr &rest clauses) | |
64a4c526 | 558 | "Like `typecase', but error if no case fits. |
3187ba1c JB |
559 | `otherwise'-clauses are not allowed. |
560 | \n(fn EXPR (TYPE BODY...)...)" | |
fcd73769 RS |
561 | (list* 'typecase expr (append clauses '((ecase-error-flag))))) |
562 | ||
563 | ||
564 | ;;; Blocks and exits. | |
565 | ||
566 | (defmacro block (name &rest body) | |
64a4c526 | 567 | "Define a lexically-scoped block named NAME. |
fcd73769 RS |
568 | NAME may be any symbol. Code inside the BODY forms can call `return-from' |
569 | to jump prematurely out of the block. This differs from `catch' and `throw' | |
570 | in two respects: First, the NAME is an unevaluated symbol rather than a | |
571 | quoted symbol or other form; and second, NAME is lexically rather than | |
572 | dynamically scoped: Only references to it within BODY will work. These | |
573 | references may appear inside macro expansions, but not inside functions | |
574 | called from BODY." | |
575 | (if (cl-safe-expr-p (cons 'progn body)) (cons 'progn body) | |
576 | (list 'cl-block-wrapper | |
577 | (list* 'catch (list 'quote (intern (format "--cl-block-%s--" name))) | |
578 | body)))) | |
579 | ||
580 | (defvar cl-active-block-names nil) | |
581 | ||
582 | (put 'cl-block-wrapper 'byte-compile 'cl-byte-compile-block) | |
583 | (defun cl-byte-compile-block (cl-form) | |
584 | (if (fboundp 'byte-compile-form-do-effect) ; Check for optimizing compiler | |
585 | (progn | |
586 | (let* ((cl-entry (cons (nth 1 (nth 1 (nth 1 cl-form))) nil)) | |
587 | (cl-active-block-names (cons cl-entry cl-active-block-names)) | |
588 | (cl-body (byte-compile-top-level | |
589 | (cons 'progn (cddr (nth 1 cl-form)))))) | |
590 | (if (cdr cl-entry) | |
591 | (byte-compile-form (list 'catch (nth 1 (nth 1 cl-form)) cl-body)) | |
592 | (byte-compile-form cl-body)))) | |
593 | (byte-compile-form (nth 1 cl-form)))) | |
594 | ||
595 | (put 'cl-block-throw 'byte-compile 'cl-byte-compile-throw) | |
596 | (defun cl-byte-compile-throw (cl-form) | |
597 | (let ((cl-found (assq (nth 1 (nth 1 cl-form)) cl-active-block-names))) | |
598 | (if cl-found (setcdr cl-found t))) | |
599 | (byte-compile-normal-call (cons 'throw (cdr cl-form)))) | |
600 | ||
64a4c526 DL |
601 | (defmacro return (&optional result) |
602 | "Return from the block named nil. | |
fcd73769 | 603 | This is equivalent to `(return-from nil RESULT)'." |
64a4c526 | 604 | (list 'return-from nil result)) |
fcd73769 | 605 | |
64a4c526 DL |
606 | (defmacro return-from (name &optional result) |
607 | "Return from the block named NAME. | |
fcd73769 RS |
608 | This jump out to the innermost enclosing `(block NAME ...)' form, |
609 | returning RESULT from that form (or nil if RESULT is omitted). | |
610 | This is compatible with Common Lisp, but note that `defun' and | |
611 | `defmacro' do not create implicit blocks as they do in Common Lisp." | |
612 | (let ((name2 (intern (format "--cl-block-%s--" name)))) | |
64a4c526 | 613 | (list 'cl-block-throw (list 'quote name2) result))) |
fcd73769 RS |
614 | |
615 | ||
616 | ;;; The "loop" macro. | |
617 | ||
618 | (defvar args) (defvar loop-accum-var) (defvar loop-accum-vars) | |
619 | (defvar loop-bindings) (defvar loop-body) (defvar loop-destr-temps) | |
620 | (defvar loop-finally) (defvar loop-finish-flag) (defvar loop-first-flag) | |
621 | (defvar loop-initially) (defvar loop-map-form) (defvar loop-name) | |
622 | (defvar loop-result) (defvar loop-result-explicit) | |
623 | (defvar loop-result-var) (defvar loop-steps) (defvar loop-symbol-macs) | |
624 | ||
625 | (defmacro loop (&rest args) | |
69d8fb1e | 626 | "The Common Lisp `loop' macro. |
fcd73769 RS |
627 | Valid clauses are: |
628 | for VAR from/upfrom/downfrom NUM to/upto/downto/above/below NUM by NUM, | |
629 | for VAR in LIST by FUNC, for VAR on LIST by FUNC, for VAR = INIT then EXPR, | |
630 | for VAR across ARRAY, repeat NUM, with VAR = INIT, while COND, until COND, | |
631 | always COND, never COND, thereis COND, collect EXPR into VAR, | |
632 | append EXPR into VAR, nconc EXPR into VAR, sum EXPR into VAR, | |
633 | count EXPR into VAR, maximize EXPR into VAR, minimize EXPR into VAR, | |
634 | if COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...], | |
635 | unless COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...], | |
636 | do EXPRS..., initially EXPRS..., finally EXPRS..., return EXPR, | |
69d8fb1e SM |
637 | finally return EXPR, named NAME. |
638 | ||
639 | \(fn CLAUSE...)" | |
fcd73769 RS |
640 | (if (not (memq t (mapcar 'symbolp (delq nil (delq t (copy-list args)))))) |
641 | (list 'block nil (list* 'while t args)) | |
642 | (let ((loop-name nil) (loop-bindings nil) | |
643 | (loop-body nil) (loop-steps nil) | |
644 | (loop-result nil) (loop-result-explicit nil) | |
645 | (loop-result-var nil) (loop-finish-flag nil) | |
646 | (loop-accum-var nil) (loop-accum-vars nil) | |
647 | (loop-initially nil) (loop-finally nil) | |
648 | (loop-map-form nil) (loop-first-flag nil) | |
649 | (loop-destr-temps nil) (loop-symbol-macs nil)) | |
650 | (setq args (append args '(cl-end-loop))) | |
651 | (while (not (eq (car args) 'cl-end-loop)) (cl-parse-loop-clause)) | |
652 | (if loop-finish-flag | |
e542ea4b | 653 | (push `((,loop-finish-flag t)) loop-bindings)) |
fcd73769 | 654 | (if loop-first-flag |
e542ea4b SM |
655 | (progn (push `((,loop-first-flag t)) loop-bindings) |
656 | (push `(setq ,loop-first-flag nil) loop-steps))) | |
fcd73769 RS |
657 | (let* ((epilogue (nconc (nreverse loop-finally) |
658 | (list (or loop-result-explicit loop-result)))) | |
659 | (ands (cl-loop-build-ands (nreverse loop-body))) | |
660 | (while-body (nconc (cadr ands) (nreverse loop-steps))) | |
661 | (body (append | |
662 | (nreverse loop-initially) | |
663 | (list (if loop-map-form | |
664 | (list 'block '--cl-finish-- | |
665 | (subst | |
666 | (if (eq (car ands) t) while-body | |
e542ea4b SM |
667 | (cons `(or ,(car ands) |
668 | (return-from --cl-finish-- | |
669 | nil)) | |
fcd73769 RS |
670 | while-body)) |
671 | '--cl-map loop-map-form)) | |
672 | (list* 'while (car ands) while-body))) | |
673 | (if loop-finish-flag | |
674 | (if (equal epilogue '(nil)) (list loop-result-var) | |
e542ea4b SM |
675 | `((if ,loop-finish-flag |
676 | (progn ,@epilogue) ,loop-result-var))) | |
fcd73769 | 677 | epilogue)))) |
69d8fb1e | 678 | (if loop-result-var (push (list loop-result-var) loop-bindings)) |
fcd73769 RS |
679 | (while loop-bindings |
680 | (if (cdar loop-bindings) | |
69d8fb1e | 681 | (setq body (list (cl-loop-let (pop loop-bindings) body t))) |
fcd73769 RS |
682 | (let ((lets nil)) |
683 | (while (and loop-bindings | |
684 | (not (cdar loop-bindings))) | |
69d8fb1e | 685 | (push (car (pop loop-bindings)) lets)) |
fcd73769 RS |
686 | (setq body (list (cl-loop-let lets body nil)))))) |
687 | (if loop-symbol-macs | |
688 | (setq body (list (list* 'symbol-macrolet loop-symbol-macs body)))) | |
689 | (list* 'block loop-name body))))) | |
690 | ||
e542ea4b | 691 | (defun cl-parse-loop-clause () ; uses args, loop-* |
69d8fb1e | 692 | (let ((word (pop args)) |
fcd73769 RS |
693 | (hash-types '(hash-key hash-keys hash-value hash-values)) |
694 | (key-types '(key-code key-codes key-seq key-seqs | |
695 | key-binding key-bindings))) | |
696 | (cond | |
697 | ||
698 | ((null args) | |
699 | (error "Malformed `loop' macro")) | |
700 | ||
701 | ((eq word 'named) | |
69d8fb1e | 702 | (setq loop-name (pop args))) |
fcd73769 RS |
703 | |
704 | ((eq word 'initially) | |
69d8fb1e | 705 | (if (memq (car args) '(do doing)) (pop args)) |
fcd73769 RS |
706 | (or (consp (car args)) (error "Syntax error on `initially' clause")) |
707 | (while (consp (car args)) | |
69d8fb1e | 708 | (push (pop args) loop-initially))) |
fcd73769 RS |
709 | |
710 | ((eq word 'finally) | |
711 | (if (eq (car args) 'return) | |
712 | (setq loop-result-explicit (or (cl-pop2 args) '(quote nil))) | |
69d8fb1e | 713 | (if (memq (car args) '(do doing)) (pop args)) |
fcd73769 RS |
714 | (or (consp (car args)) (error "Syntax error on `finally' clause")) |
715 | (if (and (eq (caar args) 'return) (null loop-name)) | |
69d8fb1e | 716 | (setq loop-result-explicit (or (nth 1 (pop args)) '(quote nil))) |
fcd73769 | 717 | (while (consp (car args)) |
69d8fb1e | 718 | (push (pop args) loop-finally))))) |
fcd73769 RS |
719 | |
720 | ((memq word '(for as)) | |
721 | (let ((loop-for-bindings nil) (loop-for-sets nil) (loop-for-steps nil) | |
722 | (ands nil)) | |
723 | (while | |
443b961a SM |
724 | ;; Use `gensym' rather than `make-symbol'. It's important that |
725 | ;; (not (eq (symbol-name var1) (symbol-name var2))) because | |
726 | ;; these vars get added to the cl-macro-environment. | |
727 | (let ((var (or (pop args) (gensym "--cl-var--")))) | |
69d8fb1e SM |
728 | (setq word (pop args)) |
729 | (if (eq word 'being) (setq word (pop args))) | |
730 | (if (memq word '(the each)) (setq word (pop args))) | |
fcd73769 RS |
731 | (if (memq word '(buffer buffers)) |
732 | (setq word 'in args (cons '(buffer-list) args))) | |
733 | (cond | |
734 | ||
735 | ((memq word '(from downfrom upfrom to downto upto | |
736 | above below by)) | |
69d8fb1e | 737 | (push word args) |
fcd73769 RS |
738 | (if (memq (car args) '(downto above)) |
739 | (error "Must specify `from' value for downward loop")) | |
740 | (let* ((down (or (eq (car args) 'downfrom) | |
741 | (memq (caddr args) '(downto above)))) | |
742 | (excl (or (memq (car args) '(above below)) | |
743 | (memq (caddr args) '(above below)))) | |
744 | (start (and (memq (car args) '(from upfrom downfrom)) | |
745 | (cl-pop2 args))) | |
746 | (end (and (memq (car args) | |
747 | '(to upto downto above below)) | |
748 | (cl-pop2 args))) | |
749 | (step (and (eq (car args) 'by) (cl-pop2 args))) | |
e542ea4b SM |
750 | (end-var (and (not (cl-const-expr-p end)) |
751 | (make-symbol "--cl-var--"))) | |
fcd73769 | 752 | (step-var (and (not (cl-const-expr-p step)) |
e542ea4b | 753 | (make-symbol "--cl-var--")))) |
fcd73769 RS |
754 | (and step (numberp step) (<= step 0) |
755 | (error "Loop `by' value is not positive: %s" step)) | |
69d8fb1e SM |
756 | (push (list var (or start 0)) loop-for-bindings) |
757 | (if end-var (push (list end-var end) loop-for-bindings)) | |
758 | (if step-var (push (list step-var step) | |
e542ea4b | 759 | loop-for-bindings)) |
fcd73769 | 760 | (if end |
69d8fb1e | 761 | (push (list |
e542ea4b SM |
762 | (if down (if excl '> '>=) (if excl '< '<=)) |
763 | var (or end-var end)) loop-body)) | |
69d8fb1e | 764 | (push (list var (list (if down '- '+) var |
e542ea4b SM |
765 | (or step-var step 1))) |
766 | loop-for-steps))) | |
fcd73769 RS |
767 | |
768 | ((memq word '(in in-ref on)) | |
769 | (let* ((on (eq word 'on)) | |
e542ea4b SM |
770 | (temp (if (and on (symbolp var)) |
771 | var (make-symbol "--cl-var--")))) | |
69d8fb1e SM |
772 | (push (list temp (pop args)) loop-for-bindings) |
773 | (push (list 'consp temp) loop-body) | |
fcd73769 | 774 | (if (eq word 'in-ref) |
69d8fb1e | 775 | (push (list var (list 'car temp)) loop-symbol-macs) |
fcd73769 RS |
776 | (or (eq temp var) |
777 | (progn | |
69d8fb1e SM |
778 | (push (list var nil) loop-for-bindings) |
779 | (push (list var (if on temp (list 'car temp))) | |
e542ea4b | 780 | loop-for-sets)))) |
69d8fb1e | 781 | (push (list temp |
e542ea4b SM |
782 | (if (eq (car args) 'by) |
783 | (let ((step (cl-pop2 args))) | |
784 | (if (and (memq (car-safe step) | |
785 | '(quote function | |
786 | function*)) | |
787 | (symbolp (nth 1 step))) | |
788 | (list (nth 1 step) temp) | |
789 | (list 'funcall step temp))) | |
790 | (list 'cdr temp))) | |
791 | loop-for-steps))) | |
fcd73769 RS |
792 | |
793 | ((eq word '=) | |
69d8fb1e | 794 | (let* ((start (pop args)) |
fcd73769 | 795 | (then (if (eq (car args) 'then) (cl-pop2 args) start))) |
69d8fb1e | 796 | (push (list var nil) loop-for-bindings) |
fcd73769 RS |
797 | (if (or ands (eq (car args) 'and)) |
798 | (progn | |
e542ea4b SM |
799 | (push `(,var |
800 | (if ,(or loop-first-flag | |
801 | (setq loop-first-flag | |
802 | (make-symbol "--cl-var--"))) | |
803 | ,start ,var)) | |
804 | loop-for-sets) | |
69d8fb1e SM |
805 | (push (list var then) loop-for-steps)) |
806 | (push (list var | |
e542ea4b SM |
807 | (if (eq start then) start |
808 | `(if ,(or loop-first-flag | |
809 | (setq loop-first-flag | |
810 | (make-symbol "--cl-var--"))) | |
811 | ,start ,then))) | |
812 | loop-for-sets)))) | |
fcd73769 RS |
813 | |
814 | ((memq word '(across across-ref)) | |
e542ea4b SM |
815 | (let ((temp-vec (make-symbol "--cl-vec--")) |
816 | (temp-idx (make-symbol "--cl-idx--"))) | |
69d8fb1e SM |
817 | (push (list temp-vec (pop args)) loop-for-bindings) |
818 | (push (list temp-idx -1) loop-for-bindings) | |
819 | (push (list '< (list 'setq temp-idx (list '1+ temp-idx)) | |
e542ea4b | 820 | (list 'length temp-vec)) loop-body) |
fcd73769 | 821 | (if (eq word 'across-ref) |
69d8fb1e | 822 | (push (list var (list 'aref temp-vec temp-idx)) |
e542ea4b | 823 | loop-symbol-macs) |
69d8fb1e SM |
824 | (push (list var nil) loop-for-bindings) |
825 | (push (list var (list 'aref temp-vec temp-idx)) | |
e542ea4b | 826 | loop-for-sets)))) |
fcd73769 RS |
827 | |
828 | ((memq word '(element elements)) | |
829 | (let ((ref (or (memq (car args) '(in-ref of-ref)) | |
830 | (and (not (memq (car args) '(in of))) | |
831 | (error "Expected `of'")))) | |
832 | (seq (cl-pop2 args)) | |
e542ea4b | 833 | (temp-seq (make-symbol "--cl-seq--")) |
fcd73769 RS |
834 | (temp-idx (if (eq (car args) 'using) |
835 | (if (and (= (length (cadr args)) 2) | |
836 | (eq (caadr args) 'index)) | |
837 | (cadr (cl-pop2 args)) | |
838 | (error "Bad `using' clause")) | |
e542ea4b | 839 | (make-symbol "--cl-idx--")))) |
69d8fb1e SM |
840 | (push (list temp-seq seq) loop-for-bindings) |
841 | (push (list temp-idx 0) loop-for-bindings) | |
fcd73769 | 842 | (if ref |
e542ea4b | 843 | (let ((temp-len (make-symbol "--cl-len--"))) |
69d8fb1e | 844 | (push (list temp-len (list 'length temp-seq)) |
e542ea4b | 845 | loop-for-bindings) |
69d8fb1e | 846 | (push (list var (list 'elt temp-seq temp-idx)) |
e542ea4b | 847 | loop-symbol-macs) |
69d8fb1e SM |
848 | (push (list '< temp-idx temp-len) loop-body)) |
849 | (push (list var nil) loop-for-bindings) | |
850 | (push (list 'and temp-seq | |
e542ea4b SM |
851 | (list 'or (list 'consp temp-seq) |
852 | (list '< temp-idx | |
853 | (list 'length temp-seq)))) | |
854 | loop-body) | |
69d8fb1e | 855 | (push (list var (list 'if (list 'consp temp-seq) |
e542ea4b SM |
856 | (list 'pop temp-seq) |
857 | (list 'aref temp-seq temp-idx))) | |
858 | loop-for-sets)) | |
69d8fb1e | 859 | (push (list temp-idx (list '1+ temp-idx)) |
e542ea4b | 860 | loop-for-steps))) |
fcd73769 RS |
861 | |
862 | ((memq word hash-types) | |
863 | (or (memq (car args) '(in of)) (error "Expected `of'")) | |
864 | (let* ((table (cl-pop2 args)) | |
865 | (other (if (eq (car args) 'using) | |
866 | (if (and (= (length (cadr args)) 2) | |
867 | (memq (caadr args) hash-types) | |
868 | (not (eq (caadr args) word))) | |
869 | (cadr (cl-pop2 args)) | |
870 | (error "Bad `using' clause")) | |
e542ea4b | 871 | (make-symbol "--cl-var--")))) |
fcd73769 RS |
872 | (if (memq word '(hash-value hash-values)) |
873 | (setq var (prog1 other (setq other var)))) | |
874 | (setq loop-map-form | |
e542ea4b | 875 | `(maphash (lambda (,var ,other) . --cl-map) ,table)))) |
fcd73769 RS |
876 | |
877 | ((memq word '(symbol present-symbol external-symbol | |
878 | symbols present-symbols external-symbols)) | |
879 | (let ((ob (and (memq (car args) '(in of)) (cl-pop2 args)))) | |
880 | (setq loop-map-form | |
e542ea4b | 881 | `(mapatoms (lambda (,var) . --cl-map) ,ob)))) |
fcd73769 RS |
882 | |
883 | ((memq word '(overlay overlays extent extents)) | |
884 | (let ((buf nil) (from nil) (to nil)) | |
885 | (while (memq (car args) '(in of from to)) | |
886 | (cond ((eq (car args) 'from) (setq from (cl-pop2 args))) | |
887 | ((eq (car args) 'to) (setq to (cl-pop2 args))) | |
888 | (t (setq buf (cl-pop2 args))))) | |
889 | (setq loop-map-form | |
e542ea4b SM |
890 | `(cl-map-extents |
891 | (lambda (,var ,(make-symbol "--cl-var--")) | |
892 | (progn . --cl-map) nil) | |
893 | ,buf ,from ,to)))) | |
fcd73769 RS |
894 | |
895 | ((memq word '(interval intervals)) | |
896 | (let ((buf nil) (prop nil) (from nil) (to nil) | |
e542ea4b SM |
897 | (var1 (make-symbol "--cl-var1--")) |
898 | (var2 (make-symbol "--cl-var2--"))) | |
fcd73769 RS |
899 | (while (memq (car args) '(in of property from to)) |
900 | (cond ((eq (car args) 'from) (setq from (cl-pop2 args))) | |
901 | ((eq (car args) 'to) (setq to (cl-pop2 args))) | |
902 | ((eq (car args) 'property) | |
903 | (setq prop (cl-pop2 args))) | |
904 | (t (setq buf (cl-pop2 args))))) | |
905 | (if (and (consp var) (symbolp (car var)) (symbolp (cdr var))) | |
906 | (setq var1 (car var) var2 (cdr var)) | |
69d8fb1e | 907 | (push (list var (list 'cons var1 var2)) loop-for-sets)) |
fcd73769 | 908 | (setq loop-map-form |
e542ea4b SM |
909 | `(cl-map-intervals |
910 | (lambda (,var1 ,var2) . --cl-map) | |
911 | ,buf ,prop ,from ,to)))) | |
fcd73769 RS |
912 | |
913 | ((memq word key-types) | |
914 | (or (memq (car args) '(in of)) (error "Expected `of'")) | |
915 | (let ((map (cl-pop2 args)) | |
916 | (other (if (eq (car args) 'using) | |
917 | (if (and (= (length (cadr args)) 2) | |
918 | (memq (caadr args) key-types) | |
919 | (not (eq (caadr args) word))) | |
920 | (cadr (cl-pop2 args)) | |
921 | (error "Bad `using' clause")) | |
e542ea4b | 922 | (make-symbol "--cl-var--")))) |
fcd73769 RS |
923 | (if (memq word '(key-binding key-bindings)) |
924 | (setq var (prog1 other (setq other var)))) | |
925 | (setq loop-map-form | |
e542ea4b SM |
926 | `(,(if (memq word '(key-seq key-seqs)) |
927 | 'cl-map-keymap-recursively 'map-keymap) | |
928 | (lambda (,var ,other) . --cl-map) ,map)))) | |
fcd73769 RS |
929 | |
930 | ((memq word '(frame frames screen screens)) | |
e542ea4b | 931 | (let ((temp (make-symbol "--cl-var--"))) |
69d8fb1e | 932 | (push (list var '(selected-frame)) |
e542ea4b | 933 | loop-for-bindings) |
69d8fb1e SM |
934 | (push (list temp nil) loop-for-bindings) |
935 | (push (list 'prog1 (list 'not (list 'eq var temp)) | |
e542ea4b SM |
936 | (list 'or temp (list 'setq temp var))) |
937 | loop-body) | |
69d8fb1e | 938 | (push (list var (list 'next-frame var)) |
e542ea4b | 939 | loop-for-steps))) |
fcd73769 RS |
940 | |
941 | ((memq word '(window windows)) | |
942 | (let ((scr (and (memq (car args) '(in of)) (cl-pop2 args))) | |
e542ea4b | 943 | (temp (make-symbol "--cl-var--"))) |
69d8fb1e | 944 | (push (list var (if scr |
e542ea4b SM |
945 | (list 'frame-selected-window scr) |
946 | '(selected-window))) | |
947 | loop-for-bindings) | |
69d8fb1e SM |
948 | (push (list temp nil) loop-for-bindings) |
949 | (push (list 'prog1 (list 'not (list 'eq var temp)) | |
e542ea4b SM |
950 | (list 'or temp (list 'setq temp var))) |
951 | loop-body) | |
69d8fb1e | 952 | (push (list var (list 'next-window var)) loop-for-steps))) |
fcd73769 RS |
953 | |
954 | (t | |
955 | (let ((handler (and (symbolp word) | |
956 | (get word 'cl-loop-for-handler)))) | |
957 | (if handler | |
958 | (funcall handler var) | |
959 | (error "Expected a `for' preposition, found %s" word))))) | |
960 | (eq (car args) 'and)) | |
961 | (setq ands t) | |
69d8fb1e | 962 | (pop args)) |
fcd73769 | 963 | (if (and ands loop-for-bindings) |
69d8fb1e | 964 | (push (nreverse loop-for-bindings) loop-bindings) |
fcd73769 RS |
965 | (setq loop-bindings (nconc (mapcar 'list loop-for-bindings) |
966 | loop-bindings))) | |
967 | (if loop-for-sets | |
69d8fb1e | 968 | (push (list 'progn |
e542ea4b SM |
969 | (cl-loop-let (nreverse loop-for-sets) 'setq ands) |
970 | t) loop-body)) | |
fcd73769 | 971 | (if loop-for-steps |
69d8fb1e | 972 | (push (cons (if ands 'psetq 'setq) |
e542ea4b SM |
973 | (apply 'append (nreverse loop-for-steps))) |
974 | loop-steps)))) | |
fcd73769 RS |
975 | |
976 | ((eq word 'repeat) | |
e542ea4b | 977 | (let ((temp (make-symbol "--cl-var--"))) |
69d8fb1e SM |
978 | (push (list (list temp (pop args))) loop-bindings) |
979 | (push (list '>= (list 'setq temp (list '1- temp)) 0) loop-body))) | |
fcd73769 | 980 | |
ae1aa776 | 981 | ((memq word '(collect collecting)) |
69d8fb1e | 982 | (let ((what (pop args)) |
fcd73769 RS |
983 | (var (cl-loop-handle-accum nil 'nreverse))) |
984 | (if (eq var loop-accum-var) | |
69d8fb1e SM |
985 | (push (list 'progn (list 'push what var) t) loop-body) |
986 | (push (list 'progn | |
e542ea4b SM |
987 | (list 'setq var (list 'nconc var (list 'list what))) |
988 | t) loop-body)))) | |
fcd73769 RS |
989 | |
990 | ((memq word '(nconc nconcing append appending)) | |
69d8fb1e | 991 | (let ((what (pop args)) |
fcd73769 | 992 | (var (cl-loop-handle-accum nil 'nreverse))) |
69d8fb1e | 993 | (push (list 'progn |
e542ea4b SM |
994 | (list 'setq var |
995 | (if (eq var loop-accum-var) | |
996 | (list 'nconc | |
997 | (list (if (memq word '(nconc nconcing)) | |
998 | 'nreverse 'reverse) | |
999 | what) | |
1000 | var) | |
1001 | (list (if (memq word '(nconc nconcing)) | |
1002 | 'nconc 'append) | |
1003 | var what))) t) loop-body))) | |
fcd73769 RS |
1004 | |
1005 | ((memq word '(concat concating)) | |
69d8fb1e | 1006 | (let ((what (pop args)) |
fcd73769 | 1007 | (var (cl-loop-handle-accum ""))) |
69d8fb1e | 1008 | (push (list 'progn (list 'callf 'concat var what) t) loop-body))) |
fcd73769 RS |
1009 | |
1010 | ((memq word '(vconcat vconcating)) | |
69d8fb1e | 1011 | (let ((what (pop args)) |
fcd73769 | 1012 | (var (cl-loop-handle-accum []))) |
69d8fb1e | 1013 | (push (list 'progn (list 'callf 'vconcat var what) t) loop-body))) |
fcd73769 RS |
1014 | |
1015 | ((memq word '(sum summing)) | |
69d8fb1e | 1016 | (let ((what (pop args)) |
fcd73769 | 1017 | (var (cl-loop-handle-accum 0))) |
69d8fb1e | 1018 | (push (list 'progn (list 'incf var what) t) loop-body))) |
fcd73769 RS |
1019 | |
1020 | ((memq word '(count counting)) | |
69d8fb1e | 1021 | (let ((what (pop args)) |
fcd73769 | 1022 | (var (cl-loop-handle-accum 0))) |
69d8fb1e | 1023 | (push (list 'progn (list 'if what (list 'incf var)) t) loop-body))) |
fcd73769 RS |
1024 | |
1025 | ((memq word '(minimize minimizing maximize maximizing)) | |
69d8fb1e | 1026 | (let* ((what (pop args)) |
e542ea4b | 1027 | (temp (if (cl-simple-expr-p what) what (make-symbol "--cl-var--"))) |
fcd73769 RS |
1028 | (var (cl-loop-handle-accum nil)) |
1029 | (func (intern (substring (symbol-name word) 0 3))) | |
1030 | (set (list 'setq var (list 'if var (list func var temp) temp)))) | |
69d8fb1e | 1031 | (push (list 'progn (if (eq temp what) set |
e542ea4b SM |
1032 | (list 'let (list (list temp what)) set)) |
1033 | t) loop-body))) | |
fcd73769 RS |
1034 | |
1035 | ((eq word 'with) | |
1036 | (let ((bindings nil)) | |
69d8fb1e | 1037 | (while (progn (push (list (pop args) |
e542ea4b SM |
1038 | (and (eq (car args) '=) (cl-pop2 args))) |
1039 | bindings) | |
fcd73769 | 1040 | (eq (car args) 'and)) |
69d8fb1e SM |
1041 | (pop args)) |
1042 | (push (nreverse bindings) loop-bindings))) | |
fcd73769 RS |
1043 | |
1044 | ((eq word 'while) | |
69d8fb1e | 1045 | (push (pop args) loop-body)) |
fcd73769 RS |
1046 | |
1047 | ((eq word 'until) | |
69d8fb1e | 1048 | (push (list 'not (pop args)) loop-body)) |
fcd73769 RS |
1049 | |
1050 | ((eq word 'always) | |
e542ea4b | 1051 | (or loop-finish-flag (setq loop-finish-flag (make-symbol "--cl-flag--"))) |
69d8fb1e | 1052 | (push (list 'setq loop-finish-flag (pop args)) loop-body) |
fcd73769 RS |
1053 | (setq loop-result t)) |
1054 | ||
1055 | ((eq word 'never) | |
e542ea4b | 1056 | (or loop-finish-flag (setq loop-finish-flag (make-symbol "--cl-flag--"))) |
69d8fb1e | 1057 | (push (list 'setq loop-finish-flag (list 'not (pop args))) |
e542ea4b | 1058 | loop-body) |
fcd73769 RS |
1059 | (setq loop-result t)) |
1060 | ||
1061 | ((eq word 'thereis) | |
e542ea4b SM |
1062 | (or loop-finish-flag (setq loop-finish-flag (make-symbol "--cl-flag--"))) |
1063 | (or loop-result-var (setq loop-result-var (make-symbol "--cl-var--"))) | |
69d8fb1e | 1064 | (push (list 'setq loop-finish-flag |
e542ea4b SM |
1065 | (list 'not (list 'setq loop-result-var (pop args)))) |
1066 | loop-body)) | |
fcd73769 RS |
1067 | |
1068 | ((memq word '(if when unless)) | |
69d8fb1e | 1069 | (let* ((cond (pop args)) |
fcd73769 RS |
1070 | (then (let ((loop-body nil)) |
1071 | (cl-parse-loop-clause) | |
1072 | (cl-loop-build-ands (nreverse loop-body)))) | |
1073 | (else (let ((loop-body nil)) | |
1074 | (if (eq (car args) 'else) | |
69d8fb1e | 1075 | (progn (pop args) (cl-parse-loop-clause))) |
fcd73769 RS |
1076 | (cl-loop-build-ands (nreverse loop-body)))) |
1077 | (simple (and (eq (car then) t) (eq (car else) t)))) | |
69d8fb1e | 1078 | (if (eq (car args) 'end) (pop args)) |
fcd73769 RS |
1079 | (if (eq word 'unless) (setq then (prog1 else (setq else then)))) |
1080 | (let ((form (cons (if simple (cons 'progn (nth 1 then)) (nth 2 then)) | |
1081 | (if simple (nth 1 else) (list (nth 2 else)))))) | |
1082 | (if (cl-expr-contains form 'it) | |
e542ea4b | 1083 | (let ((temp (make-symbol "--cl-var--"))) |
69d8fb1e | 1084 | (push (list temp) loop-bindings) |
fcd73769 RS |
1085 | (setq form (list* 'if (list 'setq temp cond) |
1086 | (subst temp 'it form)))) | |
1087 | (setq form (list* 'if cond form))) | |
69d8fb1e | 1088 | (push (if simple (list 'progn form t) form) loop-body)))) |
fcd73769 RS |
1089 | |
1090 | ((memq word '(do doing)) | |
1091 | (let ((body nil)) | |
1092 | (or (consp (car args)) (error "Syntax error on `do' clause")) | |
69d8fb1e SM |
1093 | (while (consp (car args)) (push (pop args) body)) |
1094 | (push (cons 'progn (nreverse (cons t body))) loop-body))) | |
fcd73769 RS |
1095 | |
1096 | ((eq word 'return) | |
e542ea4b SM |
1097 | (or loop-finish-flag (setq loop-finish-flag (make-symbol "--cl-var--"))) |
1098 | (or loop-result-var (setq loop-result-var (make-symbol "--cl-var--"))) | |
69d8fb1e | 1099 | (push (list 'setq loop-result-var (pop args) |
e542ea4b | 1100 | loop-finish-flag nil) loop-body)) |
fcd73769 RS |
1101 | |
1102 | (t | |
1103 | (let ((handler (and (symbolp word) (get word 'cl-loop-handler)))) | |
1104 | (or handler (error "Expected a loop keyword, found %s" word)) | |
1105 | (funcall handler)))) | |
1106 | (if (eq (car args) 'and) | |
69d8fb1e | 1107 | (progn (pop args) (cl-parse-loop-clause))))) |
fcd73769 RS |
1108 | |
1109 | (defun cl-loop-let (specs body par) ; uses loop-* | |
1110 | (let ((p specs) (temps nil) (new nil)) | |
1111 | (while (and p (or (symbolp (car-safe (car p))) (null (cadar p)))) | |
1112 | (setq p (cdr p))) | |
1113 | (and par p | |
1114 | (progn | |
1115 | (setq par nil p specs) | |
1116 | (while p | |
1117 | (or (cl-const-expr-p (cadar p)) | |
e542ea4b | 1118 | (let ((temp (make-symbol "--cl-var--"))) |
69d8fb1e | 1119 | (push (list temp (cadar p)) temps) |
fcd73769 RS |
1120 | (setcar (cdar p) temp))) |
1121 | (setq p (cdr p))))) | |
1122 | (while specs | |
1123 | (if (and (consp (car specs)) (listp (caar specs))) | |
1124 | (let* ((spec (caar specs)) (nspecs nil) | |
69d8fb1e | 1125 | (expr (cadr (pop specs))) |
fcd73769 | 1126 | (temp (cdr (or (assq spec loop-destr-temps) |
69d8fb1e | 1127 | (car (push (cons spec (or (last spec 0) |
e542ea4b SM |
1128 | (make-symbol "--cl-var--"))) |
1129 | loop-destr-temps)))))) | |
69d8fb1e | 1130 | (push (list temp expr) new) |
fcd73769 | 1131 | (while (consp spec) |
69d8fb1e | 1132 | (push (list (pop spec) |
fcd73769 RS |
1133 | (and expr (list (if spec 'pop 'car) temp))) |
1134 | nspecs)) | |
1135 | (setq specs (nconc (nreverse nspecs) specs))) | |
69d8fb1e | 1136 | (push (pop specs) new))) |
fcd73769 RS |
1137 | (if (eq body 'setq) |
1138 | (let ((set (cons (if par 'psetq 'setq) (apply 'nconc (nreverse new))))) | |
1139 | (if temps (list 'let* (nreverse temps) set) set)) | |
1140 | (list* (if par 'let 'let*) | |
1141 | (nconc (nreverse temps) (nreverse new)) body)))) | |
1142 | ||
1143 | (defun cl-loop-handle-accum (def &optional func) ; uses args, loop-* | |
1144 | (if (eq (car args) 'into) | |
1145 | (let ((var (cl-pop2 args))) | |
1146 | (or (memq var loop-accum-vars) | |
69d8fb1e SM |
1147 | (progn (push (list (list var def)) loop-bindings) |
1148 | (push var loop-accum-vars))) | |
fcd73769 RS |
1149 | var) |
1150 | (or loop-accum-var | |
1151 | (progn | |
e542ea4b | 1152 | (push (list (list (setq loop-accum-var (make-symbol "--cl-var--")) def)) |
fcd73769 RS |
1153 | loop-bindings) |
1154 | (setq loop-result (if func (list func loop-accum-var) | |
1155 | loop-accum-var)) | |
1156 | loop-accum-var)))) | |
1157 | ||
1158 | (defun cl-loop-build-ands (clauses) | |
1159 | (let ((ands nil) | |
1160 | (body nil)) | |
1161 | (while clauses | |
1162 | (if (and (eq (car-safe (car clauses)) 'progn) | |
1163 | (eq (car (last (car clauses))) t)) | |
1164 | (if (cdr clauses) | |
1165 | (setq clauses (cons (nconc (butlast (car clauses)) | |
1166 | (if (eq (car-safe (cadr clauses)) | |
1167 | 'progn) | |
1168 | (cdadr clauses) | |
1169 | (list (cadr clauses)))) | |
1170 | (cddr clauses))) | |
69d8fb1e SM |
1171 | (setq body (cdr (butlast (pop clauses))))) |
1172 | (push (pop clauses) ands))) | |
fcd73769 RS |
1173 | (setq ands (or (nreverse ands) (list t))) |
1174 | (list (if (cdr ands) (cons 'and ands) (car ands)) | |
1175 | body | |
1176 | (let ((full (if body | |
1177 | (append ands (list (cons 'progn (append body '(t))))) | |
1178 | ands))) | |
1179 | (if (cdr full) (cons 'and full) (car full)))))) | |
1180 | ||
1181 | ||
1182 | ;;; Other iteration control structures. | |
1183 | ||
1184 | (defmacro do (steps endtest &rest body) | |
1185 | "The Common Lisp `do' loop. | |
a766dfa1 JB |
1186 | |
1187 | \(fn ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)" | |
fcd73769 RS |
1188 | (cl-expand-do-loop steps endtest body nil)) |
1189 | ||
1190 | (defmacro do* (steps endtest &rest body) | |
1191 | "The Common Lisp `do*' loop. | |
a766dfa1 JB |
1192 | |
1193 | \(fn ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)" | |
fcd73769 RS |
1194 | (cl-expand-do-loop steps endtest body t)) |
1195 | ||
1196 | (defun cl-expand-do-loop (steps endtest body star) | |
1197 | (list 'block nil | |
1198 | (list* (if star 'let* 'let) | |
1199 | (mapcar (function (lambda (c) | |
1200 | (if (consp c) (list (car c) (nth 1 c)) c))) | |
1201 | steps) | |
1202 | (list* 'while (list 'not (car endtest)) | |
1203 | (append body | |
1204 | (let ((sets (mapcar | |
1205 | (function | |
1206 | (lambda (c) | |
1207 | (and (consp c) (cdr (cdr c)) | |
1208 | (list (car c) (nth 2 c))))) | |
1209 | steps))) | |
1210 | (setq sets (delq nil sets)) | |
1211 | (and sets | |
1212 | (list (cons (if (or star (not (cdr sets))) | |
1213 | 'setq 'psetq) | |
1214 | (apply 'append sets))))))) | |
1215 | (or (cdr endtest) '(nil))))) | |
1216 | ||
63744c0f | 1217 | (defmacro dolist (spec &rest body) |
69d8fb1e | 1218 | "Loop over a list. |
63744c0f | 1219 | Evaluate BODY with VAR bound to each `car' from LIST, in turn. |
69d8fb1e SM |
1220 | Then evaluate RESULT to get return value, default nil. |
1221 | ||
1222 | \(fn (VAR LIST [RESULT]) BODY...)" | |
e542ea4b | 1223 | (let ((temp (make-symbol "--cl-dolist-temp--"))) |
63744c0f DL |
1224 | (list 'block nil |
1225 | (list* 'let (list (list temp (nth 1 spec)) (car spec)) | |
1226 | (list* 'while temp (list 'setq (car spec) (list 'car temp)) | |
1227 | (append body (list (list 'setq temp | |
1228 | (list 'cdr temp))))) | |
1229 | (if (cdr (cdr spec)) | |
1230 | (cons (list 'setq (car spec) nil) (cdr (cdr spec))) | |
1231 | '(nil)))))) | |
1232 | ||
1233 | (defmacro dotimes (spec &rest body) | |
69d8fb1e | 1234 | "Loop a certain number of times. |
63744c0f DL |
1235 | Evaluate BODY with VAR bound to successive integers from 0, inclusive, |
1236 | to COUNT, exclusive. Then evaluate RESULT to get return value, default | |
69d8fb1e SM |
1237 | nil. |
1238 | ||
1239 | \(fn (VAR COUNT [RESULT]) BODY...)" | |
e542ea4b | 1240 | (let ((temp (make-symbol "--cl-dotimes-temp--"))) |
63744c0f DL |
1241 | (list 'block nil |
1242 | (list* 'let (list (list temp (nth 1 spec)) (list (car spec) 0)) | |
1243 | (list* 'while (list '< (car spec) temp) | |
1244 | (append body (list (list 'incf (car spec))))) | |
1245 | (or (cdr (cdr spec)) '(nil)))))) | |
1246 | ||
fcd73769 | 1247 | (defmacro do-symbols (spec &rest body) |
69d8fb1e | 1248 | "Loop over all symbols. |
fcd73769 | 1249 | Evaluate BODY with VAR bound to each interned symbol, or to each symbol |
69d8fb1e SM |
1250 | from OBARRAY. |
1251 | ||
1252 | \(fn (VAR [OBARRAY [RESULT]]) BODY...)" | |
fcd73769 RS |
1253 | ;; Apparently this doesn't have an implicit block. |
1254 | (list 'block nil | |
1255 | (list 'let (list (car spec)) | |
1256 | (list* 'mapatoms | |
1257 | (list 'function (list* 'lambda (list (car spec)) body)) | |
1258 | (and (cadr spec) (list (cadr spec)))) | |
1259 | (caddr spec)))) | |
1260 | ||
1261 | (defmacro do-all-symbols (spec &rest body) | |
1262 | (list* 'do-symbols (list (car spec) nil (cadr spec)) body)) | |
1263 | ||
1264 | ||
1265 | ;;; Assignments. | |
1266 | ||
1267 | (defmacro psetq (&rest args) | |
69d8fb1e | 1268 | "Set SYMs to the values VALs in parallel. |
fcd73769 | 1269 | This is like `setq', except that all VAL forms are evaluated (in order) |
69d8fb1e SM |
1270 | before assigning any symbols SYM to the corresponding values. |
1271 | ||
1272 | \(fn SYM VAL SYM VAL ...)" | |
fcd73769 RS |
1273 | (cons 'psetf args)) |
1274 | ||
1275 | ||
1276 | ;;; Binding control structures. | |
1277 | ||
1278 | (defmacro progv (symbols values &rest body) | |
64a4c526 | 1279 | "Bind SYMBOLS to VALUES dynamically in BODY. |
fcd73769 | 1280 | The forms SYMBOLS and VALUES are evaluated, and must evaluate to lists. |
3187ba1c | 1281 | Each symbol in the first list is bound to the corresponding value in the |
fcd73769 RS |
1282 | second list (or made unbound if VALUES is shorter than SYMBOLS); then the |
1283 | BODY forms are executed and their result is returned. This is much like | |
1284 | a `let' form, except that the list of symbols can be computed at run-time." | |
1285 | (list 'let '((cl-progv-save nil)) | |
1286 | (list 'unwind-protect | |
1287 | (list* 'progn (list 'cl-progv-before symbols values) body) | |
1288 | '(cl-progv-after)))) | |
1289 | ||
1290 | ;;; This should really have some way to shadow 'byte-compile properties, etc. | |
1291 | (defmacro flet (bindings &rest body) | |
3187ba1c | 1292 | "Make temporary function definitions. |
fcd73769 RS |
1293 | This is an analogue of `let' that operates on the function cell of FUNC |
1294 | rather than its value cell. The FORMs are evaluated with the specified | |
1295 | function definitions in place, then the definitions are undone (the FUNCs | |
69d8fb1e SM |
1296 | go back to their previous definitions, or lack thereof). |
1297 | ||
1298 | \(fn ((FUNC ARGLIST BODY...) ...) FORM...)" | |
fcd73769 RS |
1299 | (list* 'letf* |
1300 | (mapcar | |
1301 | (function | |
1302 | (lambda (x) | |
36f0f2b1 RS |
1303 | (if (or (and (fboundp (car x)) |
1304 | (eq (car-safe (symbol-function (car x))) 'macro)) | |
1305 | (cdr (assq (car x) cl-macro-environment))) | |
1306 | (error "Use `labels', not `flet', to rebind macro names")) | |
fcd73769 RS |
1307 | (let ((func (list 'function* |
1308 | (list 'lambda (cadr x) | |
1309 | (list* 'block (car x) (cddr x)))))) | |
1310 | (if (and (cl-compiling-file) | |
1311 | (boundp 'byte-compile-function-environment)) | |
69d8fb1e | 1312 | (push (cons (car x) (eval func)) |
fcd73769 RS |
1313 | byte-compile-function-environment)) |
1314 | (list (list 'symbol-function (list 'quote (car x))) func)))) | |
1315 | bindings) | |
1316 | body)) | |
1317 | ||
36f0f2b1 | 1318 | (defmacro labels (bindings &rest body) |
3187ba1c | 1319 | "Make temporary function bindings. |
36f0f2b1 | 1320 | This is like `flet', except the bindings are lexical instead of dynamic. |
69d8fb1e SM |
1321 | Unlike `flet', this macro is fully compliant with the Common Lisp standard. |
1322 | ||
1323 | \(fn ((FUNC ARGLIST BODY...) ...) FORM...)" | |
36f0f2b1 RS |
1324 | (let ((vars nil) (sets nil) (cl-macro-environment cl-macro-environment)) |
1325 | (while bindings | |
443b961a SM |
1326 | ;; Use `gensym' rather than `make-symbol'. It's important that |
1327 | ;; (not (eq (symbol-name var1) (symbol-name var2))) because these | |
1328 | ;; vars get added to the cl-macro-environment. | |
1329 | (let ((var (gensym "--cl-var--"))) | |
69d8fb1e SM |
1330 | (push var vars) |
1331 | (push (list 'function* (cons 'lambda (cdar bindings))) sets) | |
1332 | (push var sets) | |
1333 | (push (list (car (pop bindings)) 'lambda '(&rest cl-labels-args) | |
36f0f2b1 RS |
1334 | (list 'list* '(quote funcall) (list 'quote var) |
1335 | 'cl-labels-args)) | |
1336 | cl-macro-environment))) | |
1337 | (cl-macroexpand-all (list* 'lexical-let vars (cons (cons 'setq sets) body)) | |
1338 | cl-macro-environment))) | |
fcd73769 RS |
1339 | |
1340 | ;; The following ought to have a better definition for use with newer | |
1341 | ;; byte compilers. | |
1342 | (defmacro macrolet (bindings &rest body) | |
4342e957 | 1343 | "Make temporary macro definitions. |
69d8fb1e SM |
1344 | This is like `flet', but for macros instead of functions. |
1345 | ||
1346 | \(fn ((NAME ARGLIST BODY...) ...) FORM...)" | |
fcd73769 RS |
1347 | (if (cdr bindings) |
1348 | (list 'macrolet | |
1349 | (list (car bindings)) (list* 'macrolet (cdr bindings) body)) | |
1350 | (if (null bindings) (cons 'progn body) | |
1351 | (let* ((name (caar bindings)) | |
1352 | (res (cl-transform-lambda (cdar bindings) name))) | |
1353 | (eval (car res)) | |
1354 | (cl-macroexpand-all (cons 'progn body) | |
1355 | (cons (list* name 'lambda (cdr res)) | |
1356 | cl-macro-environment)))))) | |
1357 | ||
1358 | (defmacro symbol-macrolet (bindings &rest body) | |
4342e957 | 1359 | "Make symbol macro definitions. |
fcd73769 | 1360 | Within the body FORMs, references to the variable NAME will be replaced |
69d8fb1e SM |
1361 | by EXPANSION, and (setq NAME ...) will act like (setf EXPANSION ...). |
1362 | ||
1363 | \(fn ((NAME EXPANSION) ...) FORM...)" | |
fcd73769 RS |
1364 | (if (cdr bindings) |
1365 | (list 'symbol-macrolet | |
1366 | (list (car bindings)) (list* 'symbol-macrolet (cdr bindings) body)) | |
1367 | (if (null bindings) (cons 'progn body) | |
1368 | (cl-macroexpand-all (cons 'progn body) | |
1369 | (cons (list (symbol-name (caar bindings)) | |
1370 | (cadar bindings)) | |
1371 | cl-macro-environment))))) | |
1372 | ||
1373 | (defvar cl-closure-vars nil) | |
1374 | (defmacro lexical-let (bindings &rest body) | |
64a4c526 | 1375 | "Like `let', but lexically scoped. |
fcd73769 | 1376 | The main visible difference is that lambdas inside BODY will create |
3187ba1c JB |
1377 | lexical closures as in Common Lisp. |
1378 | \n(fn VARLIST BODY)" | |
fcd73769 RS |
1379 | (let* ((cl-closure-vars cl-closure-vars) |
1380 | (vars (mapcar (function | |
1381 | (lambda (x) | |
1382 | (or (consp x) (setq x (list x))) | |
e542ea4b SM |
1383 | (push (make-symbol (format "--cl-%s--" (car x))) |
1384 | cl-closure-vars) | |
70a036cf | 1385 | (set (car cl-closure-vars) [bad-lexical-ref]) |
fcd73769 RS |
1386 | (list (car x) (cadr x) (car cl-closure-vars)))) |
1387 | bindings)) | |
a1506d29 | 1388 | (ebody |
fcd73769 RS |
1389 | (cl-macroexpand-all |
1390 | (cons 'progn body) | |
1391 | (nconc (mapcar (function (lambda (x) | |
1392 | (list (symbol-name (car x)) | |
1393 | (list 'symbol-value (caddr x)) | |
1394 | t))) vars) | |
1395 | (list '(defun . cl-defun-expander)) | |
1396 | cl-macro-environment)))) | |
1397 | (if (not (get (car (last cl-closure-vars)) 'used)) | |
1398 | (list 'let (mapcar (function (lambda (x) | |
1399 | (list (caddr x) (cadr x)))) vars) | |
1400 | (sublis (mapcar (function (lambda (x) | |
1401 | (cons (caddr x) | |
1402 | (list 'quote (caddr x))))) | |
1403 | vars) | |
1404 | ebody)) | |
1405 | (list 'let (mapcar (function (lambda (x) | |
1406 | (list (caddr x) | |
1407 | (list 'make-symbol | |
1408 | (format "--%s--" (car x)))))) | |
1409 | vars) | |
1410 | (apply 'append '(setf) | |
1411 | (mapcar (function | |
1412 | (lambda (x) | |
1413 | (list (list 'symbol-value (caddr x)) (cadr x)))) | |
1414 | vars)) | |
1415 | ebody)))) | |
1416 | ||
1417 | (defmacro lexical-let* (bindings &rest body) | |
64a4c526 | 1418 | "Like `let*', but lexically scoped. |
fcd73769 | 1419 | The main visible difference is that lambdas inside BODY will create |
3187ba1c JB |
1420 | lexical closures as in Common Lisp. |
1421 | \n(fn VARLIST BODY)" | |
fcd73769 RS |
1422 | (if (null bindings) (cons 'progn body) |
1423 | (setq bindings (reverse bindings)) | |
1424 | (while bindings | |
69d8fb1e | 1425 | (setq body (list (list* 'lexical-let (list (pop bindings)) body)))) |
fcd73769 RS |
1426 | (car body))) |
1427 | ||
1428 | (defun cl-defun-expander (func &rest rest) | |
1429 | (list 'progn | |
1430 | (list 'defalias (list 'quote func) | |
1431 | (list 'function (cons 'lambda rest))) | |
1432 | (list 'quote func))) | |
1433 | ||
1434 | ||
1435 | ;;; Multiple values. | |
1436 | ||
1437 | (defmacro multiple-value-bind (vars form &rest body) | |
69d8fb1e | 1438 | "Collect multiple return values. |
fcd73769 RS |
1439 | FORM must return a list; the BODY is then executed with the first N elements |
1440 | of this list bound (`let'-style) to each of the symbols SYM in turn. This | |
1441 | is analogous to the Common Lisp `multiple-value-bind' macro, using lists to | |
1442 | simulate true multiple return values. For compatibility, (values A B C) is | |
69d8fb1e SM |
1443 | a synonym for (list A B C). |
1444 | ||
3187ba1c | 1445 | \(fn (SYM...) FORM BODY)" |
e542ea4b | 1446 | (let ((temp (make-symbol "--cl-var--")) (n -1)) |
fcd73769 RS |
1447 | (list* 'let* (cons (list temp form) |
1448 | (mapcar (function | |
1449 | (lambda (v) | |
1450 | (list v (list 'nth (setq n (1+ n)) temp)))) | |
1451 | vars)) | |
1452 | body))) | |
1453 | ||
1454 | (defmacro multiple-value-setq (vars form) | |
69d8fb1e | 1455 | "Collect multiple return values. |
fcd73769 RS |
1456 | FORM must return a list; the first N elements of this list are stored in |
1457 | each of the symbols SYM in turn. This is analogous to the Common Lisp | |
1458 | `multiple-value-setq' macro, using lists to simulate true multiple return | |
69d8fb1e SM |
1459 | values. For compatibility, (values A B C) is a synonym for (list A B C). |
1460 | ||
3187ba1c | 1461 | \(fn (SYM...) FORM)" |
fcd73769 RS |
1462 | (cond ((null vars) (list 'progn form nil)) |
1463 | ((null (cdr vars)) (list 'setq (car vars) (list 'car form))) | |
1464 | (t | |
e542ea4b | 1465 | (let* ((temp (make-symbol "--cl-var--")) (n 0)) |
fcd73769 | 1466 | (list 'let (list (list temp form)) |
69d8fb1e | 1467 | (list 'prog1 (list 'setq (pop vars) (list 'car temp)) |
fcd73769 RS |
1468 | (cons 'setq (apply 'nconc |
1469 | (mapcar (function | |
1470 | (lambda (v) | |
1471 | (list v (list | |
1472 | 'nth | |
1473 | (setq n (1+ n)) | |
1474 | temp)))) | |
1475 | vars))))))))) | |
1476 | ||
1477 | ||
1478 | ;;; Declarations. | |
1479 | ||
1480 | (defmacro locally (&rest body) (cons 'progn body)) | |
1481 | (defmacro the (type form) form) | |
1482 | ||
1483 | (defvar cl-proclaim-history t) ; for future compilers | |
1484 | (defvar cl-declare-stack t) ; for future compilers | |
1485 | ||
1486 | (defun cl-do-proclaim (spec hist) | |
69d8fb1e | 1487 | (and hist (listp cl-proclaim-history) (push spec cl-proclaim-history)) |
fcd73769 RS |
1488 | (cond ((eq (car-safe spec) 'special) |
1489 | (if (boundp 'byte-compile-bound-variables) | |
1490 | (setq byte-compile-bound-variables | |
1491 | (append (cdr spec) byte-compile-bound-variables)))) | |
1492 | ||
1493 | ((eq (car-safe spec) 'inline) | |
1494 | (while (setq spec (cdr spec)) | |
1495 | (or (memq (get (car spec) 'byte-optimizer) | |
1496 | '(nil byte-compile-inline-expand)) | |
1497 | (error "%s already has a byte-optimizer, can't make it inline" | |
1498 | (car spec))) | |
1499 | (put (car spec) 'byte-optimizer 'byte-compile-inline-expand))) | |
1500 | ||
1501 | ((eq (car-safe spec) 'notinline) | |
1502 | (while (setq spec (cdr spec)) | |
1503 | (if (eq (get (car spec) 'byte-optimizer) | |
1504 | 'byte-compile-inline-expand) | |
1505 | (put (car spec) 'byte-optimizer nil)))) | |
1506 | ||
1507 | ((eq (car-safe spec) 'optimize) | |
1508 | (let ((speed (assq (nth 1 (assq 'speed (cdr spec))) | |
1509 | '((0 nil) (1 t) (2 t) (3 t)))) | |
1510 | (safety (assq (nth 1 (assq 'safety (cdr spec))) | |
1511 | '((0 t) (1 t) (2 t) (3 nil))))) | |
1512 | (if speed (setq cl-optimize-speed (car speed) | |
1513 | byte-optimize (nth 1 speed))) | |
1514 | (if safety (setq cl-optimize-safety (car safety) | |
1515 | byte-compile-delete-errors (nth 1 safety))))) | |
1516 | ||
1517 | ((and (eq (car-safe spec) 'warn) (boundp 'byte-compile-warnings)) | |
1518 | (if (eq byte-compile-warnings t) | |
1519 | (setq byte-compile-warnings byte-compile-warning-types)) | |
1520 | (while (setq spec (cdr spec)) | |
1521 | (if (consp (car spec)) | |
1522 | (if (eq (cadar spec) 0) | |
1523 | (setq byte-compile-warnings | |
1524 | (delq (caar spec) byte-compile-warnings)) | |
1525 | (setq byte-compile-warnings | |
1526 | (adjoin (caar spec) byte-compile-warnings))))))) | |
1527 | nil) | |
1528 | ||
1529 | ;;; Process any proclamations made before cl-macs was loaded. | |
1530 | (defvar cl-proclaims-deferred) | |
1531 | (let ((p (reverse cl-proclaims-deferred))) | |
69d8fb1e | 1532 | (while p (cl-do-proclaim (pop p) t)) |
fcd73769 RS |
1533 | (setq cl-proclaims-deferred nil)) |
1534 | ||
1535 | (defmacro declare (&rest specs) | |
1536 | (if (cl-compiling-file) | |
1537 | (while specs | |
69d8fb1e SM |
1538 | (if (listp cl-declare-stack) (push (car specs) cl-declare-stack)) |
1539 | (cl-do-proclaim (pop specs) nil))) | |
fcd73769 RS |
1540 | nil) |
1541 | ||
1542 | ||
1543 | ||
1544 | ;;; Generalized variables. | |
1545 | ||
1546 | (defmacro define-setf-method (func args &rest body) | |
69d8fb1e | 1547 | "Define a `setf' method. |
fcd73769 RS |
1548 | This method shows how to handle `setf's to places of the form (NAME ARGS...). |
1549 | The argument forms ARGS are bound according to ARGLIST, as if NAME were | |
1550 | going to be expanded as a macro, then the BODY forms are executed and must | |
1551 | return a list of five elements: a temporary-variables list, a value-forms | |
1552 | list, a store-variables list (of length one), a store-form, and an access- | |
69d8fb1e SM |
1553 | form. See `defsetf' for a simpler way to define most setf-methods. |
1554 | ||
1555 | \(fn NAME ARGLIST BODY...)" | |
fcd73769 RS |
1556 | (append '(eval-when (compile load eval)) |
1557 | (if (stringp (car body)) | |
1558 | (list (list 'put (list 'quote func) '(quote setf-documentation) | |
69d8fb1e | 1559 | (pop body)))) |
fcd73769 RS |
1560 | (list (cl-transform-function-property |
1561 | func 'setf-method (cons args body))))) | |
6a78f30f | 1562 | (defalias 'define-setf-expander 'define-setf-method) |
fcd73769 RS |
1563 | |
1564 | (defmacro defsetf (func arg1 &rest args) | |
1565 | "(defsetf NAME FUNC): define a `setf' method. | |
1566 | This macro is an easy-to-use substitute for `define-setf-method' that works | |
1567 | well for simple place forms. In the simple `defsetf' form, `setf's of | |
1568 | the form (setf (NAME ARGS...) VAL) are transformed to function or macro | |
358e4d6d JB |
1569 | calls of the form (FUNC ARGS... VAL). Example: |
1570 | ||
1571 | (defsetf aref aset) | |
1572 | ||
fcd73769 RS |
1573 | Alternate form: (defsetf NAME ARGLIST (STORE) BODY...). |
1574 | Here, the above `setf' call is expanded by binding the argument forms ARGS | |
1575 | according to ARGLIST, binding the value form VAL to STORE, then executing | |
1576 | BODY, which must return a Lisp form that does the necessary `setf' operation. | |
1577 | Actually, ARGLIST and STORE may be bound to temporary variables which are | |
1578 | introduced automatically to preserve proper execution order of the arguments. | |
358e4d6d JB |
1579 | Example: |
1580 | ||
1581 | (defsetf nth (n x) (v) (list 'setcar (list 'nthcdr n x) v)) | |
1582 | ||
1583 | \(fn NAME [FUNC | ARGLIST (STORE) BODY...])" | |
fcd73769 RS |
1584 | (if (listp arg1) |
1585 | (let* ((largs nil) (largsr nil) | |
1586 | (temps nil) (tempsr nil) | |
1587 | (restarg nil) (rest-temps nil) | |
1588 | (store-var (car (prog1 (car args) (setq args (cdr args))))) | |
1589 | (store-temp (intern (format "--%s--temp--" store-var))) | |
1590 | (lets1 nil) (lets2 nil) | |
1591 | (docstr nil) (p arg1)) | |
1592 | (if (stringp (car args)) | |
1593 | (setq docstr (prog1 (car args) (setq args (cdr args))))) | |
1594 | (while (and p (not (eq (car p) '&aux))) | |
1595 | (if (eq (car p) '&rest) | |
1596 | (setq p (cdr p) restarg (car p)) | |
1597 | (or (memq (car p) '(&optional &key &allow-other-keys)) | |
1598 | (setq largs (cons (if (consp (car p)) (car (car p)) (car p)) | |
1599 | largs) | |
1600 | temps (cons (intern (format "--%s--temp--" (car largs))) | |
1601 | temps)))) | |
1602 | (setq p (cdr p))) | |
1603 | (setq largs (nreverse largs) temps (nreverse temps)) | |
1604 | (if restarg | |
1605 | (setq largsr (append largs (list restarg)) | |
1606 | rest-temps (intern (format "--%s--temp--" restarg)) | |
1607 | tempsr (append temps (list rest-temps))) | |
1608 | (setq largsr largs tempsr temps)) | |
1609 | (let ((p1 largs) (p2 temps)) | |
1610 | (while p1 | |
e542ea4b SM |
1611 | (setq lets1 (cons `(,(car p2) |
1612 | (make-symbol ,(format "--cl-%s--" (car p1)))) | |
fcd73769 RS |
1613 | lets1) |
1614 | lets2 (cons (list (car p1) (car p2)) lets2) | |
1615 | p1 (cdr p1) p2 (cdr p2)))) | |
1616 | (if restarg (setq lets2 (cons (list restarg rest-temps) lets2))) | |
e542ea4b SM |
1617 | `(define-setf-method ,func ,arg1 |
1618 | ,@(and docstr (list docstr)) | |
1619 | (let* | |
1620 | ,(nreverse | |
1621 | (cons `(,store-temp | |
1622 | (make-symbol ,(format "--cl-%s--" store-var))) | |
1623 | (if restarg | |
1624 | `((,rest-temps | |
1625 | (mapcar (lambda (_) (make-symbol "--cl-var--")) | |
1626 | ,restarg)) | |
1627 | ,@lets1) | |
1628 | lets1))) | |
1629 | (list ; 'values | |
1630 | (,(if restarg 'list* 'list) ,@tempsr) | |
1631 | (,(if restarg 'list* 'list) ,@largsr) | |
1632 | (list ,store-temp) | |
1633 | (let* | |
1634 | ,(nreverse | |
1635 | (cons (list store-var store-temp) | |
1636 | lets2)) | |
1637 | ,@args) | |
1638 | (,(if restarg 'list* 'list) | |
1639 | ,@(cons (list 'quote func) tempsr)))))) | |
1640 | `(defsetf ,func (&rest args) (store) | |
1641 | ,(let ((call `(cons ',arg1 | |
1642 | (append args (list store))))) | |
1643 | (if (car args) | |
1644 | `(list 'progn ,call store) | |
1645 | call))))) | |
fcd73769 RS |
1646 | |
1647 | ;;; Some standard place types from Common Lisp. | |
1648 | (defsetf aref aset) | |
1649 | (defsetf car setcar) | |
1650 | (defsetf cdr setcdr) | |
c382fb0a GM |
1651 | (defsetf caar (x) (val) (list 'setcar (list 'car x) val)) |
1652 | (defsetf cadr (x) (val) (list 'setcar (list 'cdr x) val)) | |
1653 | (defsetf cdar (x) (val) (list 'setcdr (list 'car x) val)) | |
1654 | (defsetf cddr (x) (val) (list 'setcdr (list 'cdr x) val)) | |
fcd73769 RS |
1655 | (defsetf elt (seq n) (store) |
1656 | (list 'if (list 'listp seq) (list 'setcar (list 'nthcdr n seq) store) | |
1657 | (list 'aset seq n store))) | |
1658 | (defsetf get put) | |
1659 | (defsetf get* (x y &optional d) (store) (list 'put x y store)) | |
69d8fb1e | 1660 | (defsetf gethash (x h &optional d) (store) (list 'puthash x store h)) |
fcd73769 RS |
1661 | (defsetf nth (n x) (store) (list 'setcar (list 'nthcdr n x) store)) |
1662 | (defsetf subseq (seq start &optional end) (new) | |
64a4c526 | 1663 | (list 'progn (list 'replace seq new :start1 start :end1 end) new)) |
fcd73769 RS |
1664 | (defsetf symbol-function fset) |
1665 | (defsetf symbol-plist setplist) | |
1666 | (defsetf symbol-value set) | |
1667 | ||
1668 | ;;; Various car/cdr aliases. Note that `cadr' is handled specially. | |
1669 | (defsetf first setcar) | |
1670 | (defsetf second (x) (store) (list 'setcar (list 'cdr x) store)) | |
1671 | (defsetf third (x) (store) (list 'setcar (list 'cddr x) store)) | |
1672 | (defsetf fourth (x) (store) (list 'setcar (list 'cdddr x) store)) | |
1673 | (defsetf fifth (x) (store) (list 'setcar (list 'nthcdr 4 x) store)) | |
1674 | (defsetf sixth (x) (store) (list 'setcar (list 'nthcdr 5 x) store)) | |
1675 | (defsetf seventh (x) (store) (list 'setcar (list 'nthcdr 6 x) store)) | |
1676 | (defsetf eighth (x) (store) (list 'setcar (list 'nthcdr 7 x) store)) | |
1677 | (defsetf ninth (x) (store) (list 'setcar (list 'nthcdr 8 x) store)) | |
1678 | (defsetf tenth (x) (store) (list 'setcar (list 'nthcdr 9 x) store)) | |
1679 | (defsetf rest setcdr) | |
1680 | ||
1681 | ;;; Some more Emacs-related place types. | |
1682 | (defsetf buffer-file-name set-visited-file-name t) | |
8146c81d RS |
1683 | (defsetf buffer-modified-p (&optional buf) (flag) |
1684 | (list 'with-current-buffer buf | |
1685 | (list 'set-buffer-modified-p flag))) | |
fcd73769 RS |
1686 | (defsetf buffer-name rename-buffer t) |
1687 | (defsetf buffer-string () (store) | |
1688 | (list 'progn '(erase-buffer) (list 'insert store))) | |
1689 | (defsetf buffer-substring cl-set-buffer-substring) | |
1690 | (defsetf current-buffer set-buffer) | |
1691 | (defsetf current-case-table set-case-table) | |
1692 | (defsetf current-column move-to-column t) | |
1693 | (defsetf current-global-map use-global-map t) | |
1694 | (defsetf current-input-mode () (store) | |
1695 | (list 'progn (list 'apply 'set-input-mode store) store)) | |
1696 | (defsetf current-local-map use-local-map t) | |
1697 | (defsetf current-window-configuration set-window-configuration t) | |
1698 | (defsetf default-file-modes set-default-file-modes t) | |
1699 | (defsetf default-value set-default) | |
1700 | (defsetf documentation-property put) | |
1701 | (defsetf extent-data set-extent-data) | |
1702 | (defsetf extent-face set-extent-face) | |
1703 | (defsetf extent-priority set-extent-priority) | |
1704 | (defsetf extent-end-position (ext) (store) | |
1705 | (list 'progn (list 'set-extent-endpoints (list 'extent-start-position ext) | |
1706 | store) store)) | |
1707 | (defsetf extent-start-position (ext) (store) | |
1708 | (list 'progn (list 'set-extent-endpoints store | |
1709 | (list 'extent-end-position ext)) store)) | |
1710 | (defsetf face-background (f &optional s) (x) (list 'set-face-background f x s)) | |
1711 | (defsetf face-background-pixmap (f &optional s) (x) | |
1712 | (list 'set-face-background-pixmap f x s)) | |
1713 | (defsetf face-font (f &optional s) (x) (list 'set-face-font f x s)) | |
1714 | (defsetf face-foreground (f &optional s) (x) (list 'set-face-foreground f x s)) | |
1715 | (defsetf face-underline-p (f &optional s) (x) | |
1716 | (list 'set-face-underline-p f x s)) | |
1717 | (defsetf file-modes set-file-modes t) | |
1718 | (defsetf frame-height set-screen-height t) | |
1719 | (defsetf frame-parameters modify-frame-parameters t) | |
1720 | (defsetf frame-visible-p cl-set-frame-visible-p) | |
1721 | (defsetf frame-width set-screen-width t) | |
313b6c69 | 1722 | (defsetf frame-parameter set-frame-parameter) |
fcd73769 RS |
1723 | (defsetf getenv setenv t) |
1724 | (defsetf get-register set-register) | |
1725 | (defsetf global-key-binding global-set-key) | |
1726 | (defsetf keymap-parent set-keymap-parent) | |
1727 | (defsetf local-key-binding local-set-key) | |
1728 | (defsetf mark set-mark t) | |
1729 | (defsetf mark-marker set-mark t) | |
1730 | (defsetf marker-position set-marker t) | |
cdef3323 | 1731 | (defsetf match-data set-match-data t) |
fcd73769 RS |
1732 | (defsetf mouse-position (scr) (store) |
1733 | (list 'set-mouse-position scr (list 'car store) (list 'cadr store) | |
1734 | (list 'cddr store))) | |
1735 | (defsetf overlay-get overlay-put) | |
1736 | (defsetf overlay-start (ov) (store) | |
1737 | (list 'progn (list 'move-overlay ov store (list 'overlay-end ov)) store)) | |
1738 | (defsetf overlay-end (ov) (store) | |
1739 | (list 'progn (list 'move-overlay ov (list 'overlay-start ov) store) store)) | |
1740 | (defsetf point goto-char) | |
1741 | (defsetf point-marker goto-char t) | |
1742 | (defsetf point-max () (store) | |
1743 | (list 'progn (list 'narrow-to-region '(point-min) store) store)) | |
1744 | (defsetf point-min () (store) | |
1745 | (list 'progn (list 'narrow-to-region store '(point-max)) store)) | |
1746 | (defsetf process-buffer set-process-buffer) | |
1747 | (defsetf process-filter set-process-filter) | |
1748 | (defsetf process-sentinel set-process-sentinel) | |
7bd4aefb | 1749 | (defsetf process-get process-put) |
fcd73769 RS |
1750 | (defsetf read-mouse-position (scr) (store) |
1751 | (list 'set-mouse-position scr (list 'car store) (list 'cdr store))) | |
1752 | (defsetf screen-height set-screen-height t) | |
1753 | (defsetf screen-width set-screen-width t) | |
1754 | (defsetf selected-window select-window) | |
1755 | (defsetf selected-screen select-screen) | |
1756 | (defsetf selected-frame select-frame) | |
1757 | (defsetf standard-case-table set-standard-case-table) | |
1758 | (defsetf syntax-table set-syntax-table) | |
1759 | (defsetf visited-file-modtime set-visited-file-modtime t) | |
1760 | (defsetf window-buffer set-window-buffer t) | |
1761 | (defsetf window-display-table set-window-display-table t) | |
1762 | (defsetf window-dedicated-p set-window-dedicated-p t) | |
1763 | (defsetf window-height () (store) | |
1764 | (list 'progn (list 'enlarge-window (list '- store '(window-height))) store)) | |
1765 | (defsetf window-hscroll set-window-hscroll) | |
1766 | (defsetf window-point set-window-point) | |
1767 | (defsetf window-start set-window-start) | |
1768 | (defsetf window-width () (store) | |
1769 | (list 'progn (list 'enlarge-window (list '- store '(window-width)) t) store)) | |
1770 | (defsetf x-get-cutbuffer x-store-cutbuffer t) | |
1771 | (defsetf x-get-cut-buffer x-store-cut-buffer t) ; groan. | |
1772 | (defsetf x-get-secondary-selection x-own-secondary-selection t) | |
1773 | (defsetf x-get-selection x-own-selection t) | |
1774 | ||
1775 | ;;; More complex setf-methods. | |
1776 | ;;; These should take &environment arguments, but since full arglists aren't | |
1777 | ;;; available while compiling cl-macs, we fake it by referring to the global | |
1778 | ;;; variable cl-macro-environment directly. | |
1779 | ||
1780 | (define-setf-method apply (func arg1 &rest rest) | |
1781 | (or (and (memq (car-safe func) '(quote function function*)) | |
1782 | (symbolp (car-safe (cdr-safe func)))) | |
1783 | (error "First arg to apply in setf is not (function SYM): %s" func)) | |
1784 | (let* ((form (cons (nth 1 func) (cons arg1 rest))) | |
1785 | (method (get-setf-method form cl-macro-environment))) | |
1786 | (list (car method) (nth 1 method) (nth 2 method) | |
1787 | (cl-setf-make-apply (nth 3 method) (cadr func) (car method)) | |
1788 | (cl-setf-make-apply (nth 4 method) (cadr func) (car method))))) | |
1789 | ||
1790 | (defun cl-setf-make-apply (form func temps) | |
1791 | (if (eq (car form) 'progn) | |
1792 | (list* 'progn (cl-setf-make-apply (cadr form) func temps) (cddr form)) | |
1793 | (or (equal (last form) (last temps)) | |
1794 | (error "%s is not suitable for use with setf-of-apply" func)) | |
1795 | (list* 'apply (list 'quote (car form)) (cdr form)))) | |
1796 | ||
1797 | (define-setf-method nthcdr (n place) | |
1798 | (let ((method (get-setf-method place cl-macro-environment)) | |
e542ea4b SM |
1799 | (n-temp (make-symbol "--cl-nthcdr-n--")) |
1800 | (store-temp (make-symbol "--cl-nthcdr-store--"))) | |
fcd73769 RS |
1801 | (list (cons n-temp (car method)) |
1802 | (cons n (nth 1 method)) | |
1803 | (list store-temp) | |
1804 | (list 'let (list (list (car (nth 2 method)) | |
1805 | (list 'cl-set-nthcdr n-temp (nth 4 method) | |
1806 | store-temp))) | |
1807 | (nth 3 method) store-temp) | |
1808 | (list 'nthcdr n-temp (nth 4 method))))) | |
1809 | ||
1810 | (define-setf-method getf (place tag &optional def) | |
1811 | (let ((method (get-setf-method place cl-macro-environment)) | |
e542ea4b SM |
1812 | (tag-temp (make-symbol "--cl-getf-tag--")) |
1813 | (def-temp (make-symbol "--cl-getf-def--")) | |
1814 | (store-temp (make-symbol "--cl-getf-store--"))) | |
fcd73769 RS |
1815 | (list (append (car method) (list tag-temp def-temp)) |
1816 | (append (nth 1 method) (list tag def)) | |
1817 | (list store-temp) | |
1818 | (list 'let (list (list (car (nth 2 method)) | |
1819 | (list 'cl-set-getf (nth 4 method) | |
1820 | tag-temp store-temp))) | |
1821 | (nth 3 method) store-temp) | |
1822 | (list 'getf (nth 4 method) tag-temp def-temp)))) | |
1823 | ||
1824 | (define-setf-method substring (place from &optional to) | |
1825 | (let ((method (get-setf-method place cl-macro-environment)) | |
e542ea4b SM |
1826 | (from-temp (make-symbol "--cl-substring-from--")) |
1827 | (to-temp (make-symbol "--cl-substring-to--")) | |
1828 | (store-temp (make-symbol "--cl-substring-store--"))) | |
fcd73769 RS |
1829 | (list (append (car method) (list from-temp to-temp)) |
1830 | (append (nth 1 method) (list from to)) | |
1831 | (list store-temp) | |
1832 | (list 'let (list (list (car (nth 2 method)) | |
1833 | (list 'cl-set-substring (nth 4 method) | |
1834 | from-temp to-temp store-temp))) | |
1835 | (nth 3 method) store-temp) | |
1836 | (list 'substring (nth 4 method) from-temp to-temp)))) | |
1837 | ||
1838 | ;;; Getting and optimizing setf-methods. | |
1839 | (defun get-setf-method (place &optional env) | |
1840 | "Return a list of five values describing the setf-method for PLACE. | |
1841 | PLACE may be any Lisp form which can appear as the PLACE argument to | |
1842 | a macro like `setf' or `incf'." | |
1843 | (if (symbolp place) | |
e542ea4b | 1844 | (let ((temp (make-symbol "--cl-setf--"))) |
fcd73769 RS |
1845 | (list nil nil (list temp) (list 'setq place temp) place)) |
1846 | (or (and (symbolp (car place)) | |
1847 | (let* ((func (car place)) | |
1848 | (name (symbol-name func)) | |
1849 | (method (get func 'setf-method)) | |
1850 | (case-fold-search nil)) | |
1851 | (or (and method | |
1852 | (let ((cl-macro-environment env)) | |
1853 | (setq method (apply method (cdr place)))) | |
1854 | (if (and (consp method) (= (length method) 5)) | |
1855 | method | |
1856 | (error "Setf-method for %s returns malformed method" | |
1857 | func))) | |
ac05d33c EN |
1858 | (and (save-match-data |
1859 | (string-match "\\`c[ad][ad][ad]?[ad]?r\\'" name)) | |
fcd73769 RS |
1860 | (get-setf-method (compiler-macroexpand place))) |
1861 | (and (eq func 'edebug-after) | |
1862 | (get-setf-method (nth (1- (length place)) place) | |
1863 | env))))) | |
1864 | (if (eq place (setq place (macroexpand place env))) | |
1865 | (if (and (symbolp (car place)) (fboundp (car place)) | |
1866 | (symbolp (symbol-function (car place)))) | |
1867 | (get-setf-method (cons (symbol-function (car place)) | |
1868 | (cdr place)) env) | |
1869 | (error "No setf-method known for %s" (car place))) | |
1870 | (get-setf-method place env))))) | |
1871 | ||
1872 | (defun cl-setf-do-modify (place opt-expr) | |
1873 | (let* ((method (get-setf-method place cl-macro-environment)) | |
1874 | (temps (car method)) (values (nth 1 method)) | |
1875 | (lets nil) (subs nil) | |
1876 | (optimize (and (not (eq opt-expr 'no-opt)) | |
1877 | (or (and (not (eq opt-expr 'unsafe)) | |
1878 | (cl-safe-expr-p opt-expr)) | |
1879 | (cl-setf-simple-store-p (car (nth 2 method)) | |
1880 | (nth 3 method))))) | |
1881 | (simple (and optimize (consp place) (cl-simple-exprs-p (cdr place))))) | |
1882 | (while values | |
1883 | (if (or simple (cl-const-expr-p (car values))) | |
69d8fb1e SM |
1884 | (push (cons (pop temps) (pop values)) subs) |
1885 | (push (list (pop temps) (pop values)) lets))) | |
fcd73769 RS |
1886 | (list (nreverse lets) |
1887 | (cons (car (nth 2 method)) (sublis subs (nth 3 method))) | |
1888 | (sublis subs (nth 4 method))))) | |
1889 | ||
1890 | (defun cl-setf-do-store (spec val) | |
1891 | (let ((sym (car spec)) | |
1892 | (form (cdr spec))) | |
1893 | (if (or (cl-const-expr-p val) | |
1894 | (and (cl-simple-expr-p val) (eq (cl-expr-contains form sym) 1)) | |
1895 | (cl-setf-simple-store-p sym form)) | |
1896 | (subst val sym form) | |
1897 | (list 'let (list (list sym val)) form)))) | |
1898 | ||
1899 | (defun cl-setf-simple-store-p (sym form) | |
1900 | (and (consp form) (eq (cl-expr-contains form sym) 1) | |
1901 | (eq (nth (1- (length form)) form) sym) | |
1902 | (symbolp (car form)) (fboundp (car form)) | |
1903 | (not (eq (car-safe (symbol-function (car form))) 'macro)))) | |
1904 | ||
1905 | ;;; The standard modify macros. | |
1906 | (defmacro setf (&rest args) | |
69d8fb1e | 1907 | "Set each PLACE to the value of its VAL. |
fcd73769 RS |
1908 | This is a generalized version of `setq'; the PLACEs may be symbolic |
1909 | references such as (car x) or (aref x i), as well as plain symbols. | |
1910 | For example, (setf (cadar x) y) is equivalent to (setcar (cdar x) y). | |
69d8fb1e SM |
1911 | The return value is the last VAL in the list. |
1912 | ||
1913 | \(fn PLACE VAL PLACE VAL ...)" | |
fcd73769 RS |
1914 | (if (cdr (cdr args)) |
1915 | (let ((sets nil)) | |
69d8fb1e | 1916 | (while args (push (list 'setf (pop args) (pop args)) sets)) |
fcd73769 RS |
1917 | (cons 'progn (nreverse sets))) |
1918 | (if (symbolp (car args)) | |
1919 | (and args (cons 'setq args)) | |
1920 | (let* ((method (cl-setf-do-modify (car args) (nth 1 args))) | |
1921 | (store (cl-setf-do-store (nth 1 method) (nth 1 args)))) | |
1922 | (if (car method) (list 'let* (car method) store) store))))) | |
1923 | ||
1924 | (defmacro psetf (&rest args) | |
69d8fb1e | 1925 | "Set PLACEs to the values VALs in parallel. |
fcd73769 | 1926 | This is like `setf', except that all VAL forms are evaluated (in order) |
69d8fb1e SM |
1927 | before assigning any PLACEs to the corresponding values. |
1928 | ||
1929 | \(fn PLACE VAL PLACE VAL ...)" | |
fcd73769 RS |
1930 | (let ((p args) (simple t) (vars nil)) |
1931 | (while p | |
1932 | (if (or (not (symbolp (car p))) (cl-expr-depends-p (nth 1 p) vars)) | |
1933 | (setq simple nil)) | |
1934 | (if (memq (car p) vars) | |
1935 | (error "Destination duplicated in psetf: %s" (car p))) | |
69d8fb1e | 1936 | (push (pop p) vars) |
fcd73769 | 1937 | (or p (error "Odd number of arguments to psetf")) |
69d8fb1e | 1938 | (pop p)) |
fcd73769 RS |
1939 | (if simple |
1940 | (list 'progn (cons 'setf args) nil) | |
1941 | (setq args (reverse args)) | |
1942 | (let ((expr (list 'setf (cadr args) (car args)))) | |
1943 | (while (setq args (cddr args)) | |
1944 | (setq expr (list 'setf (cadr args) (list 'prog1 (car args) expr)))) | |
1945 | (list 'progn expr nil))))) | |
1946 | ||
1947 | (defun cl-do-pop (place) | |
1948 | (if (cl-simple-expr-p place) | |
1949 | (list 'prog1 (list 'car place) (list 'setf place (list 'cdr place))) | |
1950 | (let* ((method (cl-setf-do-modify place t)) | |
e542ea4b | 1951 | (temp (make-symbol "--cl-pop--"))) |
fcd73769 RS |
1952 | (list 'let* |
1953 | (append (car method) | |
1954 | (list (list temp (nth 2 method)))) | |
1955 | (list 'prog1 | |
1956 | (list 'car temp) | |
1957 | (cl-setf-do-store (nth 1 method) (list 'cdr temp))))))) | |
1958 | ||
1959 | (defmacro remf (place tag) | |
64a4c526 | 1960 | "Remove TAG from property list PLACE. |
fcd73769 RS |
1961 | PLACE may be a symbol, or any generalized variable allowed by `setf'. |
1962 | The form returns true if TAG was found and removed, nil otherwise." | |
1963 | (let* ((method (cl-setf-do-modify place t)) | |
e542ea4b | 1964 | (tag-temp (and (not (cl-const-expr-p tag)) (make-symbol "--cl-remf-tag--"))) |
fcd73769 | 1965 | (val-temp (and (not (cl-simple-expr-p place)) |
e542ea4b | 1966 | (make-symbol "--cl-remf-place--"))) |
fcd73769 RS |
1967 | (ttag (or tag-temp tag)) |
1968 | (tval (or val-temp (nth 2 method)))) | |
1969 | (list 'let* | |
1970 | (append (car method) | |
1971 | (and val-temp (list (list val-temp (nth 2 method)))) | |
1972 | (and tag-temp (list (list tag-temp tag)))) | |
1973 | (list 'if (list 'eq ttag (list 'car tval)) | |
1974 | (list 'progn | |
1975 | (cl-setf-do-store (nth 1 method) (list 'cddr tval)) | |
1976 | t) | |
1977 | (list 'cl-do-remf tval ttag))))) | |
1978 | ||
1979 | (defmacro shiftf (place &rest args) | |
69d8fb1e | 1980 | "Shift left among PLACEs. |
fcd73769 | 1981 | Example: (shiftf A B C) sets A to B, B to C, and returns the old A. |
69d8fb1e SM |
1982 | Each PLACE may be a symbol, or any generalized variable allowed by `setf'. |
1983 | ||
3187ba1c | 1984 | \(fn PLACE... VAL)" |
2fa5eef4 SM |
1985 | (cond |
1986 | ((null args) place) | |
1987 | ((symbolp place) `(prog1 ,place (setq ,place (shiftf ,@args)))) | |
1988 | (t | |
1989 | (let ((method (cl-setf-do-modify place 'unsafe))) | |
1990 | `(let* ,(car method) | |
1991 | (prog1 ,(nth 2 method) | |
1992 | ,(cl-setf-do-store (nth 1 method) `(shiftf ,@args)))))))) | |
fcd73769 RS |
1993 | |
1994 | (defmacro rotatef (&rest args) | |
69d8fb1e | 1995 | "Rotate left among PLACEs. |
fcd73769 | 1996 | Example: (rotatef A B C) sets A to B, B to C, and C to A. It returns nil. |
69d8fb1e SM |
1997 | Each PLACE may be a symbol, or any generalized variable allowed by `setf'. |
1998 | ||
1999 | \(fn PLACE...)" | |
fcd73769 RS |
2000 | (if (not (memq nil (mapcar 'symbolp args))) |
2001 | (and (cdr args) | |
2002 | (let ((sets nil) | |
2003 | (first (car args))) | |
2004 | (while (cdr args) | |
69d8fb1e | 2005 | (setq sets (nconc sets (list (pop args) (car args))))) |
fcd73769 RS |
2006 | (nconc (list 'psetf) sets (list (car args) first)))) |
2007 | (let* ((places (reverse args)) | |
e542ea4b | 2008 | (temp (make-symbol "--cl-rotatef--")) |
fcd73769 RS |
2009 | (form temp)) |
2010 | (while (cdr places) | |
69d8fb1e | 2011 | (let ((method (cl-setf-do-modify (pop places) 'unsafe))) |
fcd73769 RS |
2012 | (setq form (list 'let* (car method) |
2013 | (list 'prog1 (nth 2 method) | |
2014 | (cl-setf-do-store (nth 1 method) form)))))) | |
2015 | (let ((method (cl-setf-do-modify (car places) 'unsafe))) | |
2016 | (list 'let* (append (car method) (list (list temp (nth 2 method)))) | |
2017 | (cl-setf-do-store (nth 1 method) form) nil))))) | |
2018 | ||
2019 | (defmacro letf (bindings &rest body) | |
69d8fb1e | 2020 | "Temporarily bind to PLACEs. |
fcd73769 RS |
2021 | This is the analogue of `let', but with generalized variables (in the |
2022 | sense of `setf') for the PLACEs. Each PLACE is set to the corresponding | |
2023 | VALUE, then the BODY forms are executed. On exit, either normally or | |
2024 | because of a `throw' or error, the PLACEs are set back to their original | |
2025 | values. Note that this macro is *not* available in Common Lisp. | |
2026 | As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)', | |
69d8fb1e SM |
2027 | the PLACE is not modified before executing BODY. |
2028 | ||
2029 | \(fn ((PLACE VALUE) ...) BODY...)" | |
fcd73769 RS |
2030 | (if (and (not (cdr bindings)) (cdar bindings) (symbolp (caar bindings))) |
2031 | (list* 'let bindings body) | |
2032 | (let ((lets nil) (sets nil) | |
2033 | (unsets nil) (rev (reverse bindings))) | |
2034 | (while rev | |
2035 | (let* ((place (if (symbolp (caar rev)) | |
2036 | (list 'symbol-value (list 'quote (caar rev))) | |
2037 | (caar rev))) | |
2038 | (value (cadar rev)) | |
2039 | (method (cl-setf-do-modify place 'no-opt)) | |
e542ea4b | 2040 | (save (make-symbol "--cl-letf-save--")) |
fcd73769 | 2041 | (bound (and (memq (car place) '(symbol-value symbol-function)) |
e542ea4b | 2042 | (make-symbol "--cl-letf-bound--"))) |
fcd73769 | 2043 | (temp (and (not (cl-const-expr-p value)) (cdr bindings) |
e542ea4b | 2044 | (make-symbol "--cl-letf-val--")))) |
fcd73769 RS |
2045 | (setq lets (nconc (car method) |
2046 | (if bound | |
2047 | (list (list bound | |
2048 | (list (if (eq (car place) | |
2049 | 'symbol-value) | |
2050 | 'boundp 'fboundp) | |
2051 | (nth 1 (nth 2 method)))) | |
2052 | (list save (list 'and bound | |
2053 | (nth 2 method)))) | |
2054 | (list (list save (nth 2 method)))) | |
2055 | (and temp (list (list temp value))) | |
2056 | lets) | |
2057 | body (list | |
2058 | (list 'unwind-protect | |
2059 | (cons 'progn | |
2060 | (if (cdr (car rev)) | |
2061 | (cons (cl-setf-do-store (nth 1 method) | |
2062 | (or temp value)) | |
2063 | body) | |
2064 | body)) | |
2065 | (if bound | |
2066 | (list 'if bound | |
2067 | (cl-setf-do-store (nth 1 method) save) | |
2068 | (list (if (eq (car place) 'symbol-value) | |
2069 | 'makunbound 'fmakunbound) | |
2070 | (nth 1 (nth 2 method)))) | |
2071 | (cl-setf-do-store (nth 1 method) save)))) | |
2072 | rev (cdr rev)))) | |
2073 | (list* 'let* lets body)))) | |
2074 | ||
2075 | (defmacro letf* (bindings &rest body) | |
69d8fb1e | 2076 | "Temporarily bind to PLACEs. |
fcd73769 RS |
2077 | This is the analogue of `let*', but with generalized variables (in the |
2078 | sense of `setf') for the PLACEs. Each PLACE is set to the corresponding | |
2079 | VALUE, then the BODY forms are executed. On exit, either normally or | |
2080 | because of a `throw' or error, the PLACEs are set back to their original | |
2081 | values. Note that this macro is *not* available in Common Lisp. | |
2082 | As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)', | |
69d8fb1e SM |
2083 | the PLACE is not modified before executing BODY. |
2084 | ||
2085 | \(fn ((PLACE VALUE) ...) BODY...)" | |
fcd73769 RS |
2086 | (if (null bindings) |
2087 | (cons 'progn body) | |
2088 | (setq bindings (reverse bindings)) | |
2089 | (while bindings | |
69d8fb1e | 2090 | (setq body (list (list* 'letf (list (pop bindings)) body)))) |
fcd73769 RS |
2091 | (car body))) |
2092 | ||
2093 | (defmacro callf (func place &rest args) | |
69d8fb1e | 2094 | "Set PLACE to (FUNC PLACE ARGS...). |
fcd73769 | 2095 | FUNC should be an unquoted function name. PLACE may be a symbol, |
69d8fb1e SM |
2096 | or any generalized variable allowed by `setf'. |
2097 | ||
2098 | \(fn FUNC PLACE ARGS...)" | |
fcd73769 RS |
2099 | (let* ((method (cl-setf-do-modify place (cons 'list args))) |
2100 | (rargs (cons (nth 2 method) args))) | |
2101 | (list 'let* (car method) | |
2102 | (cl-setf-do-store (nth 1 method) | |
2103 | (if (symbolp func) (cons func rargs) | |
2104 | (list* 'funcall (list 'function func) | |
2105 | rargs)))))) | |
2106 | ||
2107 | (defmacro callf2 (func arg1 place &rest args) | |
69d8fb1e SM |
2108 | "Set PLACE to (FUNC ARG1 PLACE ARGS...). |
2109 | Like `callf', but PLACE is the second argument of FUNC, not the first. | |
2110 | ||
2111 | \(fn FUNC ARG1 PLACE ARGS...)" | |
fcd73769 RS |
2112 | (if (and (cl-safe-expr-p arg1) (cl-simple-expr-p place) (symbolp func)) |
2113 | (list 'setf place (list* func arg1 place args)) | |
2114 | (let* ((method (cl-setf-do-modify place (cons 'list args))) | |
e542ea4b | 2115 | (temp (and (not (cl-const-expr-p arg1)) (make-symbol "--cl-arg1--"))) |
fcd73769 RS |
2116 | (rargs (list* (or temp arg1) (nth 2 method) args))) |
2117 | (list 'let* (append (and temp (list (list temp arg1))) (car method)) | |
2118 | (cl-setf-do-store (nth 1 method) | |
2119 | (if (symbolp func) (cons func rargs) | |
2120 | (list* 'funcall (list 'function func) | |
2121 | rargs))))))) | |
2122 | ||
2123 | (defmacro define-modify-macro (name arglist func &optional doc) | |
64a4c526 | 2124 | "Define a `setf'-like modify macro. |
fcd73769 RS |
2125 | If NAME is called, it combines its PLACE argument with the other arguments |
2126 | from ARGLIST using FUNC: (define-modify-macro incf (&optional (n 1)) +)" | |
2127 | (if (memq '&key arglist) (error "&key not allowed in define-modify-macro")) | |
e542ea4b | 2128 | (let ((place (make-symbol "--cl-place--"))) |
fcd73769 RS |
2129 | (list 'defmacro* name (cons place arglist) doc |
2130 | (list* (if (memq '&rest arglist) 'list* 'list) | |
2131 | '(quote callf) (list 'quote func) place | |
2132 | (cl-arglist-args arglist))))) | |
2133 | ||
2134 | ||
2135 | ;;; Structures. | |
2136 | ||
2137 | (defmacro defstruct (struct &rest descs) | |
69d8fb1e | 2138 | "Define a struct type. |
fcd73769 RS |
2139 | This macro defines a new Lisp data type called NAME, which contains data |
2140 | stored in SLOTs. This defines a `make-NAME' constructor, a `copy-NAME' | |
69d8fb1e SM |
2141 | copier, a `NAME-p' predicate, and setf-able `NAME-SLOT' accessors. |
2142 | ||
2143 | \(fn (NAME OPTIONS...) (SLOT SLOT-OPTS...)...)" | |
fcd73769 RS |
2144 | (let* ((name (if (consp struct) (car struct) struct)) |
2145 | (opts (cdr-safe struct)) | |
2146 | (slots nil) | |
2147 | (defaults nil) | |
2148 | (conc-name (concat (symbol-name name) "-")) | |
2149 | (constructor (intern (format "make-%s" name))) | |
2150 | (constrs nil) | |
2151 | (copier (intern (format "copy-%s" name))) | |
2152 | (predicate (intern (format "%s-p" name))) | |
2153 | (print-func nil) (print-auto nil) | |
2154 | (safety (if (cl-compiling-file) cl-optimize-safety 3)) | |
2155 | (include nil) | |
2156 | (tag (intern (format "cl-struct-%s" name))) | |
2157 | (tag-symbol (intern (format "cl-struct-%s-tags" name))) | |
2158 | (include-descs nil) | |
fcd73769 RS |
2159 | (side-eff nil) |
2160 | (type nil) | |
2161 | (named nil) | |
2162 | (forms nil) | |
2163 | pred-form pred-check) | |
2164 | (if (stringp (car descs)) | |
69d8fb1e SM |
2165 | (push (list 'put (list 'quote name) '(quote structure-documentation) |
2166 | (pop descs)) forms)) | |
fcd73769 RS |
2167 | (setq descs (cons '(cl-tag-slot) |
2168 | (mapcar (function (lambda (x) (if (consp x) x (list x)))) | |
2169 | descs))) | |
2170 | (while opts | |
2171 | (let ((opt (if (consp (car opts)) (caar opts) (car opts))) | |
69d8fb1e | 2172 | (args (cdr-safe (pop opts)))) |
64a4c526 | 2173 | (cond ((eq opt :conc-name) |
fcd73769 RS |
2174 | (if args |
2175 | (setq conc-name (if (car args) | |
2176 | (symbol-name (car args)) "")))) | |
64a4c526 | 2177 | ((eq opt :constructor) |
fcd73769 | 2178 | (if (cdr args) |
40e8a6c3 SM |
2179 | (progn |
2180 | ;; If this defines a constructor of the same name as | |
2181 | ;; the default one, don't define the default. | |
2182 | (if (eq (car args) constructor) | |
2183 | (setq constructor nil)) | |
2184 | (push args constrs)) | |
fcd73769 | 2185 | (if args (setq constructor (car args))))) |
64a4c526 | 2186 | ((eq opt :copier) |
fcd73769 | 2187 | (if args (setq copier (car args)))) |
64a4c526 | 2188 | ((eq opt :predicate) |
fcd73769 | 2189 | (if args (setq predicate (car args)))) |
64a4c526 | 2190 | ((eq opt :include) |
fcd73769 RS |
2191 | (setq include (car args) |
2192 | include-descs (mapcar (function | |
2193 | (lambda (x) | |
2194 | (if (consp x) x (list x)))) | |
36f0f2b1 | 2195 | (cdr args)))) |
64a4c526 | 2196 | ((eq opt :print-function) |
fcd73769 | 2197 | (setq print-func (car args))) |
64a4c526 | 2198 | ((eq opt :type) |
fcd73769 | 2199 | (setq type (car args))) |
64a4c526 | 2200 | ((eq opt :named) |
fcd73769 | 2201 | (setq named t)) |
64a4c526 | 2202 | ((eq opt :initial-offset) |
fcd73769 RS |
2203 | (setq descs (nconc (make-list (car args) '(cl-skip-slot)) |
2204 | descs))) | |
2205 | (t | |
2206 | (error "Slot option %s unrecognized" opt))))) | |
2207 | (if print-func | |
2208 | (setq print-func (list 'progn | |
2209 | (list 'funcall (list 'function print-func) | |
2210 | 'cl-x 'cl-s 'cl-n) t)) | |
2211 | (or type (and include (not (get include 'cl-struct-print))) | |
2212 | (setq print-auto t | |
2213 | print-func (and (or (not (or include type)) (null print-func)) | |
2214 | (list 'progn | |
2215 | (list 'princ (format "#S(%s" name) | |
2216 | 'cl-s)))))) | |
2217 | (if include | |
2218 | (let ((inc-type (get include 'cl-struct-type)) | |
2219 | (old-descs (get include 'cl-struct-slots))) | |
2220 | (or inc-type (error "%s is not a struct name" include)) | |
2221 | (and type (not (eq (car inc-type) type)) | |
2222 | (error ":type disagrees with :include for %s" name)) | |
2223 | (while include-descs | |
2224 | (setcar (memq (or (assq (caar include-descs) old-descs) | |
2225 | (error "No slot %s in included struct %s" | |
2226 | (caar include-descs) include)) | |
2227 | old-descs) | |
69d8fb1e | 2228 | (pop include-descs))) |
fcd73769 RS |
2229 | (setq descs (append old-descs (delq (assq 'cl-tag-slot descs) descs)) |
2230 | type (car inc-type) | |
2231 | named (assq 'cl-tag-slot descs)) | |
2232 | (if (cadr inc-type) (setq tag name named t)) | |
36f0f2b1 RS |
2233 | (let ((incl include)) |
2234 | (while incl | |
69d8fb1e | 2235 | (push (list 'pushnew (list 'quote tag) |
36f0f2b1 RS |
2236 | (intern (format "cl-struct-%s-tags" incl))) |
2237 | forms) | |
2238 | (setq incl (get incl 'cl-struct-include))))) | |
fcd73769 RS |
2239 | (if type |
2240 | (progn | |
2241 | (or (memq type '(vector list)) | |
4920bd1e | 2242 | (error "Invalid :type specifier: %s" type)) |
fcd73769 RS |
2243 | (if named (setq tag name))) |
2244 | (setq type 'vector named 'true))) | |
2245 | (or named (setq descs (delq (assq 'cl-tag-slot descs) descs))) | |
69d8fb1e | 2246 | (push (list 'defvar tag-symbol) forms) |
fcd73769 RS |
2247 | (setq pred-form (and named |
2248 | (let ((pos (- (length descs) | |
2249 | (length (memq (assq 'cl-tag-slot descs) | |
2250 | descs))))) | |
2251 | (if (eq type 'vector) | |
2252 | (list 'and '(vectorp cl-x) | |
2253 | (list '>= '(length cl-x) (length descs)) | |
2254 | (list 'memq (list 'aref 'cl-x pos) | |
2255 | tag-symbol)) | |
2256 | (if (= pos 0) | |
2257 | (list 'memq '(car-safe cl-x) tag-symbol) | |
2258 | (list 'and '(consp cl-x) | |
2259 | (list 'memq (list 'nth pos 'cl-x) | |
2260 | tag-symbol)))))) | |
2261 | pred-check (and pred-form (> safety 0) | |
2262 | (if (and (eq (caadr pred-form) 'vectorp) | |
2263 | (= safety 1)) | |
2264 | (cons 'and (cdddr pred-form)) pred-form))) | |
2265 | (let ((pos 0) (descp descs)) | |
2266 | (while descp | |
69d8fb1e | 2267 | (let* ((desc (pop descp)) |
fcd73769 RS |
2268 | (slot (car desc))) |
2269 | (if (memq slot '(cl-tag-slot cl-skip-slot)) | |
2270 | (progn | |
69d8fb1e SM |
2271 | (push nil slots) |
2272 | (push (and (eq slot 'cl-tag-slot) (list 'quote tag)) | |
fcd73769 RS |
2273 | defaults)) |
2274 | (if (assq slot descp) | |
2275 | (error "Duplicate slots named %s in %s" slot name)) | |
2276 | (let ((accessor (intern (format "%s%s" conc-name slot)))) | |
69d8fb1e SM |
2277 | (push slot slots) |
2278 | (push (nth 1 desc) defaults) | |
2279 | (push (list* | |
fcd73769 RS |
2280 | 'defsubst* accessor '(cl-x) |
2281 | (append | |
2282 | (and pred-check | |
2283 | (list (list 'or pred-check | |
2284 | (list 'error | |
2285 | (format "%s accessing a non-%s" | |
c971696d | 2286 | accessor name))))) |
fcd73769 RS |
2287 | (list (if (eq type 'vector) (list 'aref 'cl-x pos) |
2288 | (if (= pos 0) '(car cl-x) | |
2289 | (list 'nth pos 'cl-x)))))) forms) | |
69d8fb1e SM |
2290 | (push (cons accessor t) side-eff) |
2291 | (push (list 'define-setf-method accessor '(cl-x) | |
64a4c526 | 2292 | (if (cadr (memq :read-only (cddr desc))) |
fcd73769 RS |
2293 | (list 'error (format "%s is a read-only slot" |
2294 | accessor)) | |
2295 | (list 'cl-struct-setf-expander 'cl-x | |
2296 | (list 'quote name) (list 'quote accessor) | |
2297 | (and pred-check (list 'quote pred-check)) | |
2298 | pos))) | |
2299 | forms) | |
2300 | (if print-auto | |
2301 | (nconc print-func | |
2302 | (list (list 'princ (format " %s" slot) 'cl-s) | |
2303 | (list 'prin1 (list accessor 'cl-x) 'cl-s))))))) | |
2304 | (setq pos (1+ pos)))) | |
2305 | (setq slots (nreverse slots) | |
2306 | defaults (nreverse defaults)) | |
2307 | (and predicate pred-form | |
69d8fb1e | 2308 | (progn (push (list 'defsubst* predicate '(cl-x) |
fcd73769 RS |
2309 | (if (eq (car pred-form) 'and) |
2310 | (append pred-form '(t)) | |
2311 | (list 'and pred-form t))) forms) | |
69d8fb1e | 2312 | (push (cons predicate 'error-free) side-eff))) |
fcd73769 | 2313 | (and copier |
69d8fb1e SM |
2314 | (progn (push (list 'defun copier '(x) '(copy-sequence x)) forms) |
2315 | (push (cons copier t) side-eff))) | |
fcd73769 | 2316 | (if constructor |
69d8fb1e | 2317 | (push (list constructor |
fcd73769 RS |
2318 | (cons '&key (delq nil (copy-sequence slots)))) |
2319 | constrs)) | |
2320 | (while constrs | |
2321 | (let* ((name (caar constrs)) | |
69d8fb1e | 2322 | (args (cadr (pop constrs))) |
fcd73769 RS |
2323 | (anames (cl-arglist-args args)) |
2324 | (make (mapcar* (function (lambda (s d) (if (memq s anames) s d))) | |
2325 | slots defaults))) | |
69d8fb1e | 2326 | (push (list 'defsubst* name |
fcd73769 RS |
2327 | (list* '&cl-defs (list 'quote (cons nil descs)) args) |
2328 | (cons type make)) forms) | |
2329 | (if (cl-safe-expr-p (cons 'progn (mapcar 'second descs))) | |
69d8fb1e | 2330 | (push (cons name t) side-eff)))) |
fcd73769 RS |
2331 | (if print-auto (nconc print-func (list '(princ ")" cl-s) t))) |
2332 | (if print-func | |
69d8fb1e | 2333 | (push (list 'push |
fcd73769 RS |
2334 | (list 'function |
2335 | (list 'lambda '(cl-x cl-s cl-n) | |
2336 | (list 'and pred-form print-func))) | |
2337 | 'custom-print-functions) forms)) | |
69d8fb1e SM |
2338 | (push (list 'setq tag-symbol (list 'list (list 'quote tag))) forms) |
2339 | (push (list* 'eval-when '(compile load eval) | |
fcd73769 RS |
2340 | (list 'put (list 'quote name) '(quote cl-struct-slots) |
2341 | (list 'quote descs)) | |
2342 | (list 'put (list 'quote name) '(quote cl-struct-type) | |
2343 | (list 'quote (list type (eq named t)))) | |
36f0f2b1 RS |
2344 | (list 'put (list 'quote name) '(quote cl-struct-include) |
2345 | (list 'quote include)) | |
fcd73769 RS |
2346 | (list 'put (list 'quote name) '(quote cl-struct-print) |
2347 | print-auto) | |
2348 | (mapcar (function (lambda (x) | |
2349 | (list 'put (list 'quote (car x)) | |
2350 | '(quote side-effect-free) | |
2351 | (list 'quote (cdr x))))) | |
2352 | side-eff)) | |
2353 | forms) | |
2354 | (cons 'progn (nreverse (cons (list 'quote name) forms))))) | |
2355 | ||
2356 | (defun cl-struct-setf-expander (x name accessor pred-form pos) | |
e542ea4b | 2357 | (let* ((temp (make-symbol "--cl-x--")) (store (make-symbol "--cl-store--"))) |
fcd73769 RS |
2358 | (list (list temp) (list x) (list store) |
2359 | (append '(progn) | |
2360 | (and pred-form | |
2361 | (list (list 'or (subst temp 'cl-x pred-form) | |
2362 | (list 'error | |
2363 | (format | |
c971696d | 2364 | "%s storing a non-%s" accessor name))))) |
fcd73769 RS |
2365 | (list (if (eq (car (get name 'cl-struct-type)) 'vector) |
2366 | (list 'aset temp pos store) | |
2367 | (list 'setcar | |
2368 | (if (<= pos 5) | |
2369 | (let ((xx temp)) | |
2370 | (while (>= (setq pos (1- pos)) 0) | |
2371 | (setq xx (list 'cdr xx))) | |
2372 | xx) | |
2373 | (list 'nthcdr pos temp)) | |
2374 | store)))) | |
2375 | (list accessor temp)))) | |
2376 | ||
2377 | ||
2378 | ;;; Types and assertions. | |
2379 | ||
64a4c526 DL |
2380 | (defmacro deftype (name arglist &rest body) |
2381 | "Define NAME as a new data type. | |
fcd73769 RS |
2382 | The type name can then be used in `typecase', `check-type', etc." |
2383 | (list 'eval-when '(compile load eval) | |
2384 | (cl-transform-function-property | |
64a4c526 | 2385 | name 'cl-deftype-handler (cons (list* '&cl-defs ''('*) arglist) body)))) |
fcd73769 RS |
2386 | |
2387 | (defun cl-make-type-test (val type) | |
fcd73769 RS |
2388 | (if (symbolp type) |
2389 | (cond ((get type 'cl-deftype-handler) | |
2390 | (cl-make-type-test val (funcall (get type 'cl-deftype-handler)))) | |
2391 | ((memq type '(nil t)) type) | |
e0b16322 | 2392 | ((eq type 'null) `(null ,val)) |
578f8106 | 2393 | ((eq type 'atom) `(atom ,val)) |
e0b16322 SM |
2394 | ((eq type 'float) `(floatp-safe ,val)) |
2395 | ((eq type 'real) `(numberp ,val)) | |
2396 | ((eq type 'fixnum) `(integerp ,val)) | |
2397 | ;; FIXME: Should `character' accept things like ?\C-\M-a ? -stef | |
dc338e19 | 2398 | ((memq type '(character string-char)) `(char-valid-p ,val)) |
fcd73769 RS |
2399 | (t |
2400 | (let* ((name (symbol-name type)) | |
2401 | (namep (intern (concat name "p")))) | |
2402 | (if (fboundp namep) (list namep val) | |
2403 | (list (intern (concat name "-p")) val))))) | |
2404 | (cond ((get (car type) 'cl-deftype-handler) | |
2405 | (cl-make-type-test val (apply (get (car type) 'cl-deftype-handler) | |
2406 | (cdr type)))) | |
e0b16322 | 2407 | ((memq (car type) '(integer float real number)) |
cb35e559 | 2408 | (delq t (list 'and (cl-make-type-test val (car type)) |
fcd73769 RS |
2409 | (if (memq (cadr type) '(* nil)) t |
2410 | (if (consp (cadr type)) (list '> val (caadr type)) | |
2411 | (list '>= val (cadr type)))) | |
2412 | (if (memq (caddr type) '(* nil)) t | |
2413 | (if (consp (caddr type)) (list '< val (caaddr type)) | |
2414 | (list '<= val (caddr type))))))) | |
e0b16322 | 2415 | ((memq (car type) '(and or not)) |
fcd73769 RS |
2416 | (cons (car type) |
2417 | (mapcar (function (lambda (x) (cl-make-type-test val x))) | |
2418 | (cdr type)))) | |
e0b16322 | 2419 | ((memq (car type) '(member member*)) |
fcd73769 | 2420 | (list 'and (list 'member* val (list 'quote (cdr type))) t)) |
e0b16322 | 2421 | ((eq (car type) 'satisfies) (list (cadr type) val)) |
fcd73769 RS |
2422 | (t (error "Bad type spec: %s" type))))) |
2423 | ||
a766dfa1 | 2424 | (defun typep (object type) ; See compiler macro below. |
fcd73769 RS |
2425 | "Check that OBJECT is of type TYPE. |
2426 | TYPE is a Common Lisp-style type specifier." | |
a766dfa1 | 2427 | (eval (cl-make-type-test 'object type))) |
fcd73769 RS |
2428 | |
2429 | (defmacro check-type (form type &optional string) | |
2430 | "Verify that FORM is of type TYPE; signal an error if not. | |
2431 | STRING is an optional description of the desired type." | |
2432 | (and (or (not (cl-compiling-file)) | |
2433 | (< cl-optimize-speed 3) (= cl-optimize-safety 3)) | |
e542ea4b SM |
2434 | (let* ((temp (if (cl-simple-expr-p form 3) |
2435 | form (make-symbol "--cl-var--"))) | |
fcd73769 RS |
2436 | (body (list 'or (cl-make-type-test temp type) |
2437 | (list 'signal '(quote wrong-type-argument) | |
2438 | (list 'list (or string (list 'quote type)) | |
2439 | temp (list 'quote form)))))) | |
2440 | (if (eq temp form) (list 'progn body nil) | |
2441 | (list 'let (list (list temp form)) body nil))))) | |
2442 | ||
2443 | (defmacro assert (form &optional show-args string &rest args) | |
2444 | "Verify that FORM returns non-nil; signal an error if not. | |
2445 | Second arg SHOW-ARGS means to include arguments of FORM in message. | |
2446 | Other args STRING and ARGS... are arguments to be passed to `error'. | |
2447 | They are not evaluated unless the assertion fails. If STRING is | |
2448 | omitted, a default message listing FORM itself is used." | |
2449 | (and (or (not (cl-compiling-file)) | |
2450 | (< cl-optimize-speed 3) (= cl-optimize-safety 3)) | |
2451 | (let ((sargs (and show-args (delq nil (mapcar | |
2452 | (function | |
2453 | (lambda (x) | |
2454 | (and (not (cl-const-expr-p x)) | |
2455 | x))) (cdr form)))))) | |
2456 | (list 'progn | |
2457 | (list 'or form | |
2458 | (if string | |
2459 | (list* 'error string (append sargs args)) | |
2460 | (list 'signal '(quote cl-assertion-failed) | |
2461 | (list* 'list (list 'quote form) sargs)))) | |
2462 | nil)))) | |
2463 | ||
2464 | (defmacro ignore-errors (&rest body) | |
a766dfa1 JB |
2465 | "Execute BODY; if an error occurs, return nil. |
2466 | Otherwise, return result of last form in BODY." | |
313b6c69 | 2467 | `(condition-case nil (progn ,@body) (error nil))) |
fcd73769 RS |
2468 | |
2469 | ||
fcd73769 RS |
2470 | ;;; Compiler macros. |
2471 | ||
2472 | (defmacro define-compiler-macro (func args &rest body) | |
64a4c526 | 2473 | "Define a compiler-only macro. |
fcd73769 RS |
2474 | This is like `defmacro', but macro expansion occurs only if the call to |
2475 | FUNC is compiled (i.e., not interpreted). Compiler macros should be used | |
2476 | for optimizing the way calls to FUNC are compiled; the form returned by | |
2477 | BODY should do the same thing as a call to the normal function called | |
2478 | FUNC, though possibly more efficiently. Note that, like regular macros, | |
2479 | compiler macros are expanded repeatedly until no further expansions are | |
2480 | possible. Unlike regular macros, BODY can decide to \"punt\" and leave the | |
2481 | original function call alone by declaring an initial `&whole foo' parameter | |
2482 | and then returning foo." | |
16c9c10f | 2483 | (let ((p args) (res nil)) |
69d8fb1e | 2484 | (while (consp p) (push (pop p) res)) |
16c9c10f | 2485 | (setq args (nconc (nreverse res) (and p (list '&rest p))))) |
fcd73769 RS |
2486 | (list 'eval-when '(compile load eval) |
2487 | (cl-transform-function-property | |
2488 | func 'cl-compiler-macro | |
2489 | (cons (if (memq '&whole args) (delq '&whole args) | |
2490 | (cons '--cl-whole-arg-- args)) body)) | |
2491 | (list 'or (list 'get (list 'quote func) '(quote byte-compile)) | |
2492 | (list 'put (list 'quote func) '(quote byte-compile) | |
2493 | '(quote cl-byte-compile-compiler-macro))))) | |
2494 | ||
2495 | (defun compiler-macroexpand (form) | |
2496 | (while | |
2497 | (let ((func (car-safe form)) (handler nil)) | |
2498 | (while (and (symbolp func) | |
2499 | (not (setq handler (get func 'cl-compiler-macro))) | |
2500 | (fboundp func) | |
2501 | (or (not (eq (car-safe (symbol-function func)) 'autoload)) | |
2502 | (load (nth 1 (symbol-function func))))) | |
2503 | (setq func (symbol-function func))) | |
2504 | (and handler | |
2505 | (not (eq form (setq form (apply handler form (cdr form)))))))) | |
2506 | form) | |
2507 | ||
2508 | (defun cl-byte-compile-compiler-macro (form) | |
2509 | (if (eq form (setq form (compiler-macroexpand form))) | |
2510 | (byte-compile-normal-call form) | |
2511 | (byte-compile-form form))) | |
2512 | ||
2513 | (defmacro defsubst* (name args &rest body) | |
69d8fb1e | 2514 | "Define NAME as a function. |
fcd73769 RS |
2515 | Like `defun', except the function is automatically declared `inline', |
2516 | ARGLIST allows full Common Lisp conventions, and BODY is implicitly | |
69d8fb1e SM |
2517 | surrounded by (block NAME ...). |
2518 | ||
2519 | \(fn NAME ARGLIST [DOCSTRING] BODY...)" | |
fcd73769 RS |
2520 | (let* ((argns (cl-arglist-args args)) (p argns) |
2521 | (pbody (cons 'progn body)) | |
2522 | (unsafe (not (cl-safe-expr-p pbody)))) | |
69d8fb1e | 2523 | (while (and p (eq (cl-expr-contains args (car p)) 1)) (pop p)) |
fcd73769 RS |
2524 | (list 'progn |
2525 | (if p nil ; give up if defaults refer to earlier args | |
2526 | (list 'define-compiler-macro name | |
cc1084a8 SM |
2527 | (if (memq '&key args) |
2528 | (list* '&whole 'cl-whole '&cl-quote args) | |
2529 | (cons '&cl-quote args)) | |
fcd73769 RS |
2530 | (list* 'cl-defsubst-expand (list 'quote argns) |
2531 | (list 'quote (list* 'block name body)) | |
2532 | (not (or unsafe (cl-expr-access-order pbody argns))) | |
2533 | (and (memq '&key args) 'cl-whole) unsafe argns))) | |
2534 | (list* 'defun* name args body)))) | |
2535 | ||
2536 | (defun cl-defsubst-expand (argns body simple whole unsafe &rest argvs) | |
2537 | (if (and whole (not (cl-safe-expr-p (cons 'progn argvs)))) whole | |
2538 | (if (cl-simple-exprs-p argvs) (setq simple t)) | |
2539 | (let ((lets (delq nil | |
2540 | (mapcar* (function | |
2541 | (lambda (argn argv) | |
2542 | (if (or simple (cl-const-expr-p argv)) | |
2543 | (progn (setq body (subst argv argn body)) | |
2544 | (and unsafe (list argn argv))) | |
2545 | (list argn argv)))) | |
2546 | argns argvs)))) | |
2547 | (if lets (list 'let lets body) body)))) | |
2548 | ||
2549 | ||
2550 | ;;; Compile-time optimizations for some functions defined in this package. | |
2551 | ;;; Note that cl.el arranges to force cl-macs to be loaded at compile-time, | |
2552 | ;;; mainly to make sure these macros will be present. | |
2553 | ||
2554 | (put 'eql 'byte-compile nil) | |
2555 | (define-compiler-macro eql (&whole form a b) | |
2556 | (cond ((eq (cl-const-expr-p a) t) | |
2557 | (let ((val (cl-const-expr-val a))) | |
2558 | (if (and (numberp val) (not (integerp val))) | |
2559 | (list 'equal a b) | |
2560 | (list 'eq a b)))) | |
2561 | ((eq (cl-const-expr-p b) t) | |
2562 | (let ((val (cl-const-expr-val b))) | |
2563 | (if (and (numberp val) (not (integerp val))) | |
2564 | (list 'equal a b) | |
2565 | (list 'eq a b)))) | |
2566 | ((cl-simple-expr-p a 5) | |
2567 | (list 'if (list 'numberp a) | |
2568 | (list 'equal a b) | |
2569 | (list 'eq a b))) | |
2570 | ((and (cl-safe-expr-p a) | |
2571 | (cl-simple-expr-p b 5)) | |
2572 | (list 'if (list 'numberp b) | |
2573 | (list 'equal a b) | |
2574 | (list 'eq a b))) | |
2575 | (t form))) | |
2576 | ||
2577 | (define-compiler-macro member* (&whole form a list &rest keys) | |
64a4c526 | 2578 | (let ((test (and (= (length keys) 2) (eq (car keys) :test) |
fcd73769 RS |
2579 | (cl-const-expr-val (nth 1 keys))))) |
2580 | (cond ((eq test 'eq) (list 'memq a list)) | |
2581 | ((eq test 'equal) (list 'member a list)) | |
eae51075 | 2582 | ((or (null keys) (eq test 'eql)) (list 'memql a list)) |
fcd73769 RS |
2583 | (t form)))) |
2584 | ||
2585 | (define-compiler-macro assoc* (&whole form a list &rest keys) | |
64a4c526 | 2586 | (let ((test (and (= (length keys) 2) (eq (car keys) :test) |
fcd73769 RS |
2587 | (cl-const-expr-val (nth 1 keys))))) |
2588 | (cond ((eq test 'eq) (list 'assq a list)) | |
2589 | ((eq test 'equal) (list 'assoc a list)) | |
2590 | ((and (eq (cl-const-expr-p a) t) (or (null keys) (eq test 'eql))) | |
2591 | (if (floatp-safe (cl-const-expr-val a)) | |
2592 | (list 'assoc a list) (list 'assq a list))) | |
2593 | (t form)))) | |
2594 | ||
2595 | (define-compiler-macro adjoin (&whole form a list &rest keys) | |
2596 | (if (and (cl-simple-expr-p a) (cl-simple-expr-p list) | |
64a4c526 | 2597 | (not (memq :key keys))) |
fcd73769 RS |
2598 | (list 'if (list* 'member* a list keys) list (list 'cons a list)) |
2599 | form)) | |
2600 | ||
2601 | (define-compiler-macro list* (arg &rest others) | |
2602 | (let* ((args (reverse (cons arg others))) | |
2603 | (form (car args))) | |
2604 | (while (setq args (cdr args)) | |
2605 | (setq form (list 'cons (car args) form))) | |
2606 | form)) | |
2607 | ||
2608 | (define-compiler-macro get* (sym prop &optional def) | |
2609 | (if def | |
2610 | (list 'getf (list 'symbol-plist sym) prop def) | |
2611 | (list 'get sym prop))) | |
2612 | ||
2613 | (define-compiler-macro typep (&whole form val type) | |
2614 | (if (cl-const-expr-p type) | |
2615 | (let ((res (cl-make-type-test val (cl-const-expr-val type)))) | |
2616 | (if (or (memq (cl-expr-contains res val) '(nil 1)) | |
2617 | (cl-simple-expr-p val)) res | |
e542ea4b | 2618 | (let ((temp (make-symbol "--cl-var--"))) |
fcd73769 RS |
2619 | (list 'let (list (list temp val)) (subst temp val res))))) |
2620 | form)) | |
2621 | ||
2622 | ||
e542ea4b SM |
2623 | (mapc (lambda (y) |
2624 | (put (car y) 'side-effect-free t) | |
2625 | (put (car y) 'byte-compile 'cl-byte-compile-compiler-macro) | |
2626 | (put (car y) 'cl-compiler-macro | |
2627 | `(lambda (w x) | |
2628 | ,(if (symbolp (cadr y)) | |
2629 | `(list ',(cadr y) | |
2630 | (list ',(caddr y) x)) | |
2631 | (cons 'list (cdr y)))))) | |
2632 | '((first 'car x) (second 'cadr x) (third 'caddr x) (fourth 'cadddr x) | |
2633 | (fifth 'nth 4 x) (sixth 'nth 5 x) (seventh 'nth 6 x) | |
2634 | (eighth 'nth 7 x) (ninth 'nth 8 x) (tenth 'nth 9 x) | |
2635 | (rest 'cdr x) (endp 'null x) (plusp '> x 0) (minusp '< x 0) | |
2636 | (caaar car caar) (caadr car cadr) (cadar car cdar) | |
2637 | (caddr car cddr) (cdaar cdr caar) (cdadr cdr cadr) | |
2638 | (cddar cdr cdar) (cdddr cdr cddr) (caaaar car caaar) | |
2639 | (caaadr car caadr) (caadar car cadar) (caaddr car caddr) | |
2640 | (cadaar car cdaar) (cadadr car cdadr) (caddar car cddar) | |
2641 | (cadddr car cdddr) (cdaaar cdr caaar) (cdaadr cdr caadr) | |
2642 | (cdadar cdr cadar) (cdaddr cdr caddr) (cddaar cdr cdaar) | |
2643 | (cddadr cdr cdadr) (cdddar cdr cddar) (cddddr cdr cdddr) )) | |
fcd73769 RS |
2644 | |
2645 | ;;; Things that are inline. | |
2646 | (proclaim '(inline floatp-safe acons map concatenate notany notevery | |
2647 | cl-set-elt revappend nreconc gethash)) | |
2648 | ||
2649 | ;;; Things that are side-effect-free. | |
e542ea4b SM |
2650 | (mapc (lambda (x) (put x 'side-effect-free t)) |
2651 | '(oddp evenp signum last butlast ldiff pairlis gcd lcm | |
2652 | isqrt floor* ceiling* truncate* round* mod* rem* subseq | |
2653 | list-length get* getf)) | |
fcd73769 RS |
2654 | |
2655 | ;;; Things that are side-effect-and-error-free. | |
e542ea4b SM |
2656 | (mapc (lambda (x) (put x 'side-effect-free 'error-free)) |
2657 | '(eql floatp-safe list* subst acons equalp random-state-p | |
2658 | copy-tree sublis)) | |
fcd73769 RS |
2659 | |
2660 | ||
2661 | (run-hooks 'cl-macs-load-hook) | |
2662 | ||
b69a3374 RS |
2663 | ;;; Local variables: |
2664 | ;;; byte-compile-warnings: (redefine callargs free-vars unresolved obsolete noruntime) | |
2665 | ;;; End: | |
2666 | ||
e542ea4b | 2667 | ;; arch-tag: afd947a6-b553-4df1-bba5-000be6388f46 |
fcd73769 | 2668 | ;;; cl-macs.el ends here |