1 ;;;; This file defines all the standard functions to be known
2 ;;;; functions. Each function has type and side-effect information,
3 ;;;; and may also have IR1 optimizers.
5 ;;;; This software is part of the SBCL system. See the README file for
8 ;;;; This software is derived from the CMU CL system, which was
9 ;;;; written at Carnegie Mellon University and released into the
10 ;;;; public domain. The software is in the public domain and is
11 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
12 ;;;; files for more information.
16 ;;;; information for known functions:
18 (defknown coerce (t type-specifier) t
20 ;; (1) This is not FLUSHABLE because it's defined to signal errors.
21 ;; (2) It's not worth trying to make this FOLDABLE in the
22 ;; cross-compiler,because
23 ;; (a) it would probably be really hard to make all the
24 ;; tricky issues (e.g. which specialized array types are
25 ;; supported) match between cross-compiler and target
26 ;; compiler, and besides
27 ;; (b) leaving it not FOLDABLE lets us use the idiom
28 ;; (COERCE FOO 'SOME-SPECIALIZED-ARRAY-TYPE-OR-ANOTHER)
29 ;; as a way of delaying the generation of specialized
30 ;; array types until runtime, which helps us keep the
31 ;; cross-compiler's dumper relatively simple and which
32 ;; lets us preserve distinctions which might not even exist
33 ;; on the cross-compilation host (because ANSI doesn't
34 ;; guarantee that specialized array types exist there).
35 ;; FIXME: It's actually not clear that COERCE on non-NUMBER types
36 ;; is FOLDABLE at all. Check this.
37 (movable #-sb-xc-host foldable)
38 :derive-type (result-type-specifier-nth-arg 2))
39 (defknown list-to-simple-string* (list) simple-string)
40 (defknown list-to-bit-vector* (list) bit-vector)
41 (defknown list-to-vector* (list type-specifier) vector)
42 (defknown list-to-simple-vector* (list) simple-vector)
43 (defknown vector-to-vector* (vector type-specifier) vector)
44 (defknown vector-to-simple-string* (vector) vector)
46 (defknown type-of (t) t (foldable flushable))
48 ;;; These can be affected by type definitions, so they're not FOLDABLE.
49 (defknown (upgraded-complex-part-type upgraded-array-element-type)
50 (type-specifier) type-specifier
53 ;;;; from the "Predicates" chapter:
55 ;;; FIXME: Is it right to have TYPEP (and TYPE-OF, elsewhere; and
56 ;;; perhaps SPECIAL-OPERATOR-P and others) be FOLDABLE in the
57 ;;; cross-compilation host? After all, some type relationships (e.g.
58 ;;; FIXNUMness) might be different between host and target. Perhaps
59 ;;; this property should be protected by #-SB-XC-HOST? Perhaps we need
60 ;;; 3-stage bootstrapping after all? (Ugh! It's *so* slow already!)
61 (defknown typep (t type-specifier) t
62 ;; Unlike SUBTYPEP or UPGRADED-ARRAY-ELEMENT-TYPE and friends, this
63 ;; seems to be FOLDABLE. Like SUBTYPEP, it's affected by type
64 ;; definitions, but unlike SUBTYPEP, there should be no way to make
65 ;; a TYPEP expression with constant arguments which doesn't return
66 ;; an error before the type declaration (because of undefined
67 ;; type). E.g. you can do
68 ;; (SUBTYPEP 'INTEGER 'FOO) => NIL, NIL
70 ;; (SUBTYPEP 'INTEGER 'FOO) => T, T
75 ;; doesn't work because the first call is an error.
77 ;; (UPGRADED-ARRAY-ELEMENT-TYPE and UPGRADED-COMPLEX-PART-TYPE have
78 ;; behavior like SUBTYPEP in this respect, not like TYPEP.)
80 (defknown subtypep (type-specifier type-specifier) (values boolean boolean)
81 ;; This is not FOLDABLE because its value is affected by type
84 ;; FIXME: Is it OK to fold this when the types have already been
85 ;; defined? Does the code inherited from CMU CL already do this?
88 (defknown (null symbolp atom consp listp numberp integerp rationalp floatp
89 complexp characterp stringp bit-vector-p vectorp
90 simple-vector-p simple-string-p simple-bit-vector-p arrayp
91 sb!xc:packagep functionp compiled-function-p not)
92 (t) boolean (movable foldable flushable))
94 (defknown (eq eql) (t t) boolean (movable foldable flushable))
95 (defknown (equal equalp) (t t) boolean (foldable flushable recursive))
99 (sb!xc:deftype name-for-class () t)
100 (defknown class-name (sb!xc:class) name-for-class (flushable))
101 (defknown find-class (name-for-class &optional t lexenv)
102 (or sb!xc:class null) ())
103 (defknown class-of (t) sb!xc:class (flushable))
104 (defknown layout-of (t) layout (flushable))
105 (defknown copy-structure (structure-object) structure-object
108 ;;;; from the "Control Structure" chapter:
110 ;;; This is not FLUSHABLE, since it's required to signal an error if
112 (defknown (symbol-value symbol-function) (symbol) t ())
114 (defknown boundp (symbol) boolean (flushable))
115 (defknown fboundp ((or symbol cons)) boolean (unsafely-flushable explicit-check))
116 (defknown special-operator-p (symbol) t
117 ;; The set of special operators never changes.
118 (movable foldable flushable))
119 (defknown set (symbol t) t (unsafe)
120 :derive-type #'result-type-last-arg)
121 (defknown fdefinition ((or symbol cons)) function (unsafe explicit-check))
122 (defknown %set-fdefinition ((or symbol cons) function) function
123 (unsafe explicit-check))
124 (defknown makunbound (symbol) symbol)
125 (defknown fmakunbound ((or symbol cons)) (or symbol cons)
126 (unsafe explicit-check))
127 (defknown (get-setf-method get-setf-method-multiple-value)
128 ((or list symbol) &optional lexenv)
129 (values list list list form form)
131 (defknown apply (callable t &rest t) *) ; ### Last arg must be List...
132 (defknown funcall (callable &rest t) *)
134 (defknown (mapcar maplist mapcan mapcon) (callable list &rest list) list
137 (defknown (mapc mapl) (callable list &rest list) list (foldable call))
139 ;;; We let VALUES-LIST be foldable, since constant-folding will turn
140 ;;; it into VALUES. VALUES is not foldable, since MV constants are
141 ;;; represented by a call to VALUES.
142 (defknown values (&rest t) * (movable flushable unsafe))
143 (defknown values-list (list) * (movable foldable unsafely-flushable))
145 ;;;; from the "Macros" chapter:
147 (defknown macro-function (symbol &optional lexenv)
150 (defknown (macroexpand macroexpand-1) (t &optional lexenv)
151 (values form &optional boolean))
153 (defknown compiler-macro-function (t &optional lexenv)
157 ;;;; from the "Declarations" chapter:
159 (defknown proclaim (list) (values) (recursive))
161 ;;;; from the "Symbols" chapter:
163 (defknown get (symbol t &optional t) t (flushable))
164 (defknown remprop (symbol t) t)
165 (defknown symbol-plist (symbol) list (flushable))
166 (defknown getf (list t &optional t) t (foldable flushable))
167 (defknown get-properties (list list) (values t t list) (foldable flushable))
168 (defknown symbol-name (symbol) simple-string (movable foldable flushable))
169 (defknown make-symbol (string) symbol (flushable))
170 (defknown copy-symbol (symbol &optional t) symbol (flushable))
171 (defknown gensym (&optional (or string unsigned-byte)) symbol ())
172 (defknown symbol-package (symbol) (or sb!xc:package null) (flushable))
173 (defknown keywordp (t) boolean (flushable)) ; If someone uninterns it...
175 ;;;; from the "Packages" chapter:
177 (sb!xc:deftype package-designator () '(or stringable sb!xc:package))
178 (sb!xc:deftype symbols () '(or list symbol))
180 (defknown gentemp (&optional string package-designator) symbol)
182 (defknown make-package (stringable &key
186 (:internal-symbols index)
187 (:external-symbols index))
189 (defknown find-package (package-designator) (or sb!xc:package null)
191 (defknown package-name (package-designator) (or simple-string null)
192 (unsafely-flushable))
193 (defknown package-nicknames (package-designator) list (unsafely-flushable))
194 (defknown rename-package (package-designator package-designator &optional list)
196 (defknown package-use-list (package-designator) list (unsafely-flushable))
197 (defknown package-used-by-list (package-designator) list (unsafely-flushable))
198 (defknown package-shadowing-symbols (package-designator) list (unsafely-flushable))
199 (defknown list-all-packages () list (flushable))
200 (defknown intern (string &optional package-designator)
201 (values symbol (member :internal :external :inherited nil))
203 (defknown find-symbol (string &optional package-designator)
204 (values symbol (member :internal :external :inherited nil))
206 (defknown (export import) (symbols &optional package-designator) (eql t))
207 (defknown unintern (symbol &optional package-designator) boolean)
208 (defknown unexport (symbols &optional package-designator) (eql t))
209 (defknown shadowing-import (symbols &optional package-designator) (eql t))
210 (defknown shadow ((or symbol string list) &optional package-designator)
212 (defknown (use-package unuse-package)
213 ((or list package-designator) &optional package-designator) (eql t))
214 (defknown find-all-symbols (stringable) list (flushable))
216 ;;;; from the "Numbers" chapter:
218 (defknown zerop (number) boolean (movable foldable flushable explicit-check))
219 (defknown (plusp minusp) (real) boolean
220 (movable foldable flushable explicit-check))
221 (defknown (oddp evenp) (integer) boolean
222 (movable foldable flushable explicit-check))
223 (defknown (= /=) (number &rest number) boolean
224 (movable foldable flushable explicit-check))
225 (defknown (< > <= >=) (real &rest real) boolean
226 (movable foldable flushable explicit-check))
227 (defknown (max min) (real &rest real) real
228 (movable foldable flushable explicit-check))
230 (defknown + (&rest number) number
231 (movable foldable flushable explicit-check))
232 (defknown - (number &rest number) number
233 (movable foldable flushable explicit-check))
234 (defknown * (&rest number) number
235 (movable foldable flushable explicit-check))
236 (defknown / (number &rest number) number
237 (movable foldable flushable explicit-check))
238 (defknown (1+ 1-) (number) number
239 (movable foldable flushable explicit-check))
241 (defknown conjugate (number) number
242 (movable foldable flushable explicit-check))
244 (defknown gcd (&rest integer) unsigned-byte
245 (movable foldable flushable explicit-check)
246 #|:derive-type 'boolean-result-type|#)
247 (defknown lcm (&rest integer) unsigned-byte
248 (movable foldable flushable explicit-check))
250 #+sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.)
251 (defknown exp (number) irrational
252 (movable foldable flushable explicit-check recursive)
253 :derive-type #'result-type-float-contagion)
255 #-sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.)
256 (defknown exp (number) irrational
257 (movable foldable flushable explicit-check recursive))
259 (defknown expt (number number) number
260 (movable foldable flushable explicit-check recursive))
261 (defknown log (number &optional real) irrational
262 (movable foldable flushable explicit-check))
263 (defknown sqrt (number) irrational
264 (movable foldable flushable explicit-check))
265 (defknown isqrt (unsigned-byte) unsigned-byte
266 (movable foldable flushable explicit-check recursive))
268 (defknown (abs phase signum) (number) number
269 (movable foldable flushable explicit-check))
270 (defknown cis (real) (complex float)
271 (movable foldable flushable explicit-check))
273 #+sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.)
275 (defknown (sin cos) (number)
276 (or (float -1.0 1.0) (complex float))
277 (movable foldable flushable explicit-check recursive)
278 :derive-type #'result-type-float-contagion)
281 (number &optional real) irrational
282 (movable foldable unsafely-flushable explicit-check recursive)
283 :derive-type #'result-type-float-contagion)
285 (defknown (tan sinh cosh tanh asinh)
286 (number) irrational (movable foldable flushable explicit-check recursive)
287 :derive-type #'result-type-float-contagion)
290 #-sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.)
292 (defknown (sin cos) (number)
293 (or (float -1.0 1.0) (complex float))
294 (movable foldable flushable explicit-check recursive))
297 (number &optional real) irrational
298 (movable foldable unsafely-flushable explicit-check recursive))
300 (defknown (tan sinh cosh tanh asinh)
301 (number) irrational (movable foldable flushable explicit-check recursive))
304 (defknown (asin acos acosh atanh)
306 (movable foldable flushable explicit-check recursive))
308 (defknown float (real &optional float) float
309 (movable foldable flushable explicit-check))
311 (defknown (rational) (real) rational
312 (movable foldable flushable explicit-check))
314 (defknown (rationalize) (real) rational
315 (movable foldable flushable explicit-check recursive))
317 (defknown (numerator denominator) (rational) integer
318 (movable foldable flushable))
320 (defknown (floor ceiling truncate round)
321 (real &optional real) (values integer real)
322 (movable foldable flushable explicit-check))
324 (defknown (mod rem) (real real) real
325 (movable foldable flushable explicit-check))
327 (defknown (ffloor fceiling fround ftruncate)
328 (real &optional real) (values float float)
329 (movable foldable flushable explicit-check))
331 (defknown decode-float (float) (values float float-exponent float)
332 (movable foldable flushable explicit-check))
333 (defknown scale-float (float float-exponent) float
334 (movable foldable flushable explicit-check))
335 (defknown float-radix (float) float-radix
336 (movable foldable flushable explicit-check))
337 (defknown float-sign (float &optional float) float
338 (movable foldable flushable explicit-check))
339 (defknown (float-digits float-precision) (float) float-digits
340 (movable foldable flushable explicit-check))
341 (defknown integer-decode-float (float)
342 (values integer float-exponent (member -1 1))
343 (movable foldable flushable explicit-check))
345 (defknown complex (real &optional real) number
346 (movable foldable flushable explicit-check))
348 (defknown (realpart imagpart) (number) real (movable foldable flushable))
350 (defknown (logior logxor logand logeqv) (&rest integer) integer
351 (movable foldable flushable explicit-check))
353 (defknown (lognand lognor logandc1 logandc2 logorc1 logorc2)
354 (integer integer) integer
355 (movable foldable flushable explicit-check))
357 (defknown boole (boole-code integer integer) integer
358 (movable foldable flushable))
360 (defknown lognot (integer) integer (movable foldable flushable explicit-check))
361 (defknown logtest (integer integer) boolean (movable foldable flushable))
362 (defknown logbitp (bit-index integer) boolean (movable foldable flushable))
363 (defknown ash (integer integer) integer
364 (movable foldable flushable explicit-check))
365 (defknown (logcount integer-length) (integer) bit-index
366 (movable foldable flushable explicit-check))
367 ;;; FIXME: According to the ANSI spec, it's legal to use any
368 ;;; nonnegative indices for BYTE arguments, not just BIT-INDEX. It's
369 ;;; hard to come up with useful ways to do this, but it is possible to
370 ;;; come up with *legal* ways to do this, so it would be nice
371 ;;; to fix this so we comply with the spec.
372 (defknown byte (bit-index bit-index) byte-specifier
373 (movable foldable flushable))
374 (defknown (byte-size byte-position) (byte-specifier) bit-index
375 (movable foldable flushable))
376 (defknown ldb (byte-specifier integer) integer (movable foldable flushable))
377 (defknown ldb-test (byte-specifier integer) boolean
378 (movable foldable flushable))
379 (defknown mask-field (byte-specifier integer) integer
380 (movable foldable flushable))
381 (defknown dpb (integer byte-specifier integer) integer
382 (movable foldable flushable))
383 (defknown deposit-field (integer byte-specifier integer) integer
384 (movable foldable flushable))
385 (defknown random ((real (0)) &optional random-state) (real 0) ())
386 (defknown make-random-state (&optional (or (member nil t) random-state))
387 random-state (flushable))
388 (defknown random-state-p (t) boolean (movable foldable flushable))
390 ;;;; from the "Characters" chapter:
391 (defknown (standard-char-p graphic-char-p alpha-char-p
392 upper-case-p lower-case-p both-case-p alphanumericp)
393 (character) boolean (movable foldable flushable))
395 (defknown digit-char-p (character &optional unsigned-byte)
396 (or (integer 0 35) null) (movable foldable flushable))
398 (defknown (char= char/= char< char> char<= char>= char-equal char-not-equal
399 char-lessp char-greaterp char-not-greaterp char-not-lessp)
400 (character &rest character) boolean (movable foldable flushable))
402 (defknown character (t) character (movable foldable unsafely-flushable))
403 (defknown char-code (character) char-code (movable foldable flushable))
404 (defknown (char-upcase char-downcase) (character) character
405 (movable foldable flushable))
406 (defknown digit-char (integer &optional integer)
407 (or character null) (movable foldable flushable))
408 (defknown char-int (character) char-code (movable foldable flushable))
409 (defknown char-name (character) (or simple-string null)
410 (movable foldable flushable))
411 (defknown name-char (stringable) (or character null)
412 (movable foldable flushable))
413 (defknown code-char (char-code) base-char
414 ;; By suppressing constant folding on CODE-CHAR when the
415 ;; cross-compiler is running in the cross-compilation host vanilla
416 ;; ANSI Common Lisp, we can use CODE-CHAR expressions to delay until
417 ;; target Lisp run time the generation of CHARACTERs which aren't
418 ;; STANDARD-CHARACTERs. That way, we don't need to rely on the host
419 ;; Common Lisp being able to handle any characters other than those
420 ;; guaranteed by the ANSI spec.
421 (movable #-sb-xc-host foldable flushable))
423 ;;;; from the "Sequences" chapter:
425 (defknown elt (sequence index) t (foldable unsafely-flushable))
427 (defknown subseq (sequence index &optional sequence-end) consed-sequence
429 :derive-type (sequence-result-nth-arg 1))
431 (defknown copy-seq (sequence) consed-sequence (flushable)
432 :derive-type #'result-type-first-arg)
434 (defknown length (sequence) index (foldable flushable))
436 (defknown reverse (sequence) consed-sequence (flushable)
437 :derive-type #'result-type-first-arg)
439 (defknown nreverse (sequence) sequence ()
440 :derive-type #'result-type-first-arg)
442 (defknown make-sequence (type-specifier index
444 (:initial-element t))
447 :derive-type (result-type-specifier-nth-arg 1))
449 (defknown concatenate (type-specifier &rest sequence) consed-sequence
451 :derive-type (result-type-specifier-nth-arg 1))
453 (defknown (map %map) (type-specifier callable sequence &rest sequence)
456 ; :DERIVE-TYPE 'TYPE-SPEC-ARG1 ? Nope... (MAP NIL ...) returns NULL, not NIL.
458 (defknown %map-to-list-arity-1 (callable sequence) list (flushable call))
459 (defknown %map-to-simple-vector-arity-1 (callable sequence) simple-vector
461 (defknown %map-to-nil-on-simple-vector (callable simple-vector) null
463 (defknown %map-to-nil-on-vector (callable vector) null (flushable call))
464 (defknown %map-to-nil-on-sequence (callable sequence) null (flushable call))
466 ;;; returns the result from the predicate...
467 (defknown some (callable sequence &rest sequence) t
468 (foldable unsafely-flushable call))
470 (defknown (every notany notevery) (callable sequence &rest sequence) boolean
471 (foldable unsafely-flushable call))
473 ;;; unsafe for :INITIAL-VALUE...
474 (defknown reduce (callable
483 (foldable flushable call unsafe))
485 (defknown fill (sequence t &key (:start index) (:end sequence-end)) sequence
487 :derive-type #'result-type-first-arg)
489 (defknown replace (sequence
495 (:end2 sequence-end))
497 :derive-type #'result-type-first-arg)
500 (t sequence &key (:from-end t) (:test callable)
501 (:test-not callable) (:start index) (:end sequence-end)
502 (:count sequence-end) (:key callable))
505 :derive-type (sequence-result-nth-arg 2))
508 (t t sequence &key (:from-end t) (:test callable)
509 (:test-not callable) (:start index) (:end sequence-end)
510 (:count sequence-end) (:key callable))
513 :derive-type (sequence-result-nth-arg 3))
515 (defknown (remove-if remove-if-not)
516 (callable sequence &key (:from-end t) (:start index) (:end sequence-end)
517 (:count sequence-end) (:key callable))
520 :derive-type (sequence-result-nth-arg 2))
522 (defknown (substitute-if substitute-if-not)
523 (t callable sequence &key (:from-end t) (:start index) (:end sequence-end)
524 (:count sequence-end) (:key callable))
527 :derive-type (sequence-result-nth-arg 3))
530 (t sequence &key (:from-end t) (:test callable)
531 (:test-not callable) (:start index) (:end sequence-end)
532 (:count sequence-end) (:key callable))
535 :derive-type (sequence-result-nth-arg 2))
537 (defknown nsubstitute
538 (t t sequence &key (:from-end t) (:test callable)
539 (:test-not callable) (:start index) (:end sequence-end)
540 (:count sequence-end) (:key callable))
543 :derive-type (sequence-result-nth-arg 3))
545 (defknown (delete-if delete-if-not)
546 (callable sequence &key (:from-end t) (:start index) (:end sequence-end)
547 (:count sequence-end) (:key callable))
550 :derive-type (sequence-result-nth-arg 2))
552 (defknown (nsubstitute-if nsubstitute-if-not)
553 (t callable sequence &key (:from-end t) (:start index) (:end sequence-end)
554 (:count sequence-end) (:key callable))
557 :derive-type (sequence-result-nth-arg 3))
559 (defknown remove-duplicates
560 (sequence &key (:test callable) (:test-not callable) (:start index)
561 (:from-end t) (:end sequence-end) (:key callable))
563 (unsafely-flushable call)
564 :derive-type (sequence-result-nth-arg 1))
566 (defknown delete-duplicates
567 (sequence &key (:test callable) (:test-not callable) (:start index)
568 (:from-end t) (:end sequence-end) (:key callable))
570 (unsafely-flushable call)
571 :derive-type (sequence-result-nth-arg 1))
573 (defknown find (t sequence &key (:test callable) (:test-not callable)
574 (:start index) (:from-end t) (:end sequence-end)
577 (foldable flushable call))
579 (defknown (find-if find-if-not)
580 (callable sequence &key (:from-end t) (:start index) (:end sequence-end)
583 (foldable flushable call))
585 (defknown position (t sequence &key (:test callable) (:test-not callable)
586 (:start index) (:from-end t) (:end sequence-end)
589 (foldable flushable call))
591 (defknown (position-if position-if-not)
592 (callable sequence &key (:from-end t) (:start index) (:end sequence-end)
595 (foldable flushable call))
597 (defknown count (t sequence &key (:test callable) (:test-not callable)
598 (:start index) (:from-end t) (:end sequence-end)
601 (foldable flushable call))
603 (defknown (count-if count-if-not)
604 (callable sequence &key (:from-end t) (:start index) (:end sequence-end)
607 (foldable flushable call))
609 (defknown (mismatch search)
610 (sequence sequence &key (:from-end t) (:test callable) (:test-not callable)
611 (:start1 index) (:end1 sequence-end)
612 (:start2 index) (:end2 sequence-end)
615 (foldable flushable call))
617 ;;; not FLUSHABLE, since vector sort guaranteed in-place...
618 (defknown (stable-sort sort) (sequence callable &key (:key callable)) sequence
620 :derive-type (sequence-result-nth-arg 1))
622 (defknown merge (type-specifier sequence sequence callable
623 &key (:key callable))
626 :derive-type (result-type-specifier-nth-arg 1))
628 ;;; not FLUSHABLE, despite what CMU CL's DEFKNOWN said..
629 (defknown read-sequence (sequence stream
636 (defknown write-sequence (sequence stream
642 :derive-type (sequence-result-nth-arg 1))
644 ;;;; from the "Manipulating List Structure" chapter:
645 (defknown (car cdr first rest)
648 (foldable flushable))
650 (defknown (caar cadr cdar cddr
651 caaar caadr cadar caddr cdaar cdadr cddar cdddr
652 caaaar caaadr caadar caaddr cadaar cadadr caddar cadddr
653 cdaaar cdaadr cdadar cdaddr cddaar cddadr cdddar cddddr
654 second third fourth fifth sixth seventh eighth ninth tenth)
657 (foldable unsafely-flushable))
659 (defknown cons (t t) cons (movable flushable unsafe))
661 (defknown tree-equal (t t &key (:test callable) (:test-not callable)) boolean
662 (foldable flushable call))
663 (defknown endp (t) boolean (foldable unsafely-flushable movable))
664 (defknown list-length (list) (or index null) (foldable unsafely-flushable))
665 (defknown nth (index list) t (foldable flushable))
666 (defknown nthcdr (index list) t (foldable unsafely-flushable))
667 (defknown last (list &optional index) list (foldable flushable))
668 (defknown list (&rest t) list (movable flushable unsafe))
669 (defknown list* (t &rest t) t (movable flushable unsafe))
670 (defknown make-list (index &key (:initial-element t)) list
671 (movable flushable unsafe))
673 ;;; All but last must be of type LIST, but there seems to be no way to
674 ;;; express that in this syntax..
675 (defknown append (&rest t) t (flushable))
677 (defknown copy-list (list) list (flushable))
678 (defknown copy-alist (list) list (flushable))
679 (defknown copy-tree (t) t (flushable recursive))
680 (defknown revappend (list t) t (flushable))
681 (defknown nconc (&rest list) list ())
682 (defknown nreconc (list t) list ())
683 (defknown butlast (list &optional index) list (flushable))
684 (defknown nbutlast (list &optional index) list ())
685 (defknown ldiff (list t) list (flushable))
686 (defknown (rplaca rplacd) (cons t) list (unsafe))
688 (defknown (nsubst subst) (t t t &key (:key callable) (:test callable)
689 (:test-not callable))
690 list (flushable unsafe call))
692 (defknown (subst-if subst-if-not nsubst-if nsubst-if-not)
693 (t t t &key (:key callable))
694 list (flushable unsafe call))
696 (defknown (sublis nsublis) (list t &key (:key callable) (:test callable)
697 (:test-not callable))
698 list (flushable unsafe call))
700 (defknown member (t list &key (:key callable) (:test callable)
701 (:test-not callable))
702 list (foldable flushable call))
703 (defknown (member-if member-if-not) (callable list &key (:key callable))
704 list (foldable flushable call))
706 (defknown tailp (t list) boolean (foldable flushable))
708 (defknown adjoin (t list &key (:key callable) (:test callable)
709 (:test-not callable))
710 list (foldable flushable unsafe call))
712 (defknown (union intersection set-difference set-exclusive-or)
713 (list list &key (:key callable) (:test callable) (:test-not callable))
715 (foldable flushable call))
717 (defknown (nunion nintersection nset-difference nset-exclusive-or)
718 (list list &key (:key callable) (:test callable) (:test-not callable))
720 (foldable flushable call))
723 (list list &key (:key callable) (:test callable) (:test-not callable))
725 (foldable flushable call))
727 (defknown acons (t t t) list (movable flushable unsafe))
728 (defknown pairlis (t t &optional t) list (flushable unsafe))
730 (defknown (rassoc assoc)
731 (t list &key (:key callable) (:test callable) (:test-not callable))
732 list (foldable flushable call))
733 (defknown (assoc-if-not assoc-if rassoc-if rassoc-if-not)
734 (callable list &key (:key callable)) list (foldable flushable call))
736 (defknown (memq assq) (t list) list (foldable flushable unsafe))
737 (defknown delq (t list) list (flushable unsafe))
739 ;;;; from the "Hash Tables" chapter:
741 (defknown make-hash-table
742 (&key (:test callable) (:size unsigned-byte)
743 (:rehash-size (or (integer 1) (float (1.0))))
744 (:rehash-threshold (real 0 1))
748 (defknown hash-table-p (t) boolean (movable foldable flushable))
749 (defknown gethash (t hash-table &optional t) (values t boolean)
750 (flushable unsafe)) ; not FOLDABLE, since hash table contents can change
751 (defknown %puthash (t hash-table t) t (unsafe))
752 (defknown remhash (t hash-table) boolean ())
753 (defknown maphash (callable hash-table) null (flushable call))
754 (defknown clrhash (hash-table) hash-table ())
755 (defknown hash-table-count (hash-table) index (flushable))
756 (defknown hash-table-rehash-size (hash-table) (or (integer 1) (float (1.0)))
757 (foldable flushable))
758 (defknown hash-table-rehash-threshold (hash-table) (real 0 1)
759 (foldable flushable))
760 (defknown hash-table-size (hash-table) index (flushable))
761 (defknown hash-table-test (hash-table) symbol (foldable flushable))
762 (defknown sxhash (t) (integer 0 #.sb!xc:most-positive-fixnum)
763 (foldable flushable))
765 ;;;; from the "Arrays" chapter
767 (defknown make-array ((or index list)
769 (:element-type type-specifier)
771 (:initial-contents t)
774 (:displaced-to (or array null))
775 (:displaced-index-offset index))
776 array (flushable unsafe))
778 (defknown vector (&rest t) simple-vector (flushable unsafe))
780 (defknown aref (array &rest index) t (foldable flushable))
781 (defknown row-major-aref (array index) t (foldable flushable))
783 (defknown array-element-type (array)
785 (foldable flushable recursive))
786 (defknown array-rank (array) array-rank (foldable flushable))
787 (defknown array-dimension (array array-rank) index (foldable flushable))
788 (defknown array-dimensions (array) list (foldable flushable))
789 (defknown array-in-bounds-p (array &rest index) boolean (foldable flushable))
790 (defknown array-row-major-index (array &rest index) array-total-size
791 (foldable flushable))
792 (defknown array-total-size (array) array-total-size (foldable flushable))
793 (defknown adjustable-array-p (array) boolean (movable foldable flushable))
795 (defknown svref (simple-vector index) t (foldable flushable))
796 (defknown bit ((array bit) &rest index) bit (foldable flushable))
797 (defknown sbit ((simple-array bit) &rest index) bit (foldable flushable))
799 (defknown (bit-and bit-ior bit-xor bit-eqv bit-nand bit-nor bit-andc1 bit-andc2
801 ((array bit) (array bit) &optional (or (array bit) (member t)))
804 #|:derive-type #'result-type-last-arg|#)
806 (defknown bit-not ((array bit) &optional (or (array bit) (member t)))
809 #|:derive-type #'result-type-last-arg|#)
811 (defknown array-has-fill-pointer-p (array) boolean
812 (movable foldable flushable))
813 (defknown fill-pointer (vector) index (foldable unsafely-flushable))
814 (defknown vector-push (t vector) (or index null) ())
815 (defknown vector-push-extend (t vector &optional index) index ())
816 (defknown vector-pop (vector) t ())
818 (defknown adjust-array
819 (array (or index list) &key (:element-type type-specifier)
820 (:initial-element t) (:initial-contents list)
821 (:fill-pointer t) (:displaced-to (or array null))
822 (:displaced-index-offset index))
824 ; :derive-type 'result-type-arg1) Not even close...
826 ;;;; from the "Strings" chapter:
828 (defknown char (string index) character (foldable flushable))
829 (defknown schar (simple-string index) character (foldable flushable))
831 (sb!xc:deftype stringable () '(or character string symbol))
833 (defknown (string= string-equal)
834 (stringable stringable &key (:start1 index) (:end1 sequence-end)
835 (:start2 index) (:end2 sequence-end))
837 (foldable flushable))
839 (defknown (string< string> string<= string>= string/= string-lessp
840 string-greaterp string-not-lessp string-not-greaterp
842 (stringable stringable &key (:start1 index) (:end1 sequence-end)
843 (:start2 index) (:end2 sequence-end))
845 (foldable flushable))
847 (defknown make-string (index &key (:element-type type-specifier)
848 (:initial-element character))
849 simple-string (flushable))
851 (defknown (string-trim string-left-trim string-right-trim)
852 (sequence stringable) simple-string (flushable))
854 (defknown (string-upcase string-downcase string-capitalize)
855 (stringable &key (:start index) (:end sequence-end))
856 simple-string (flushable))
858 (defknown (nstring-upcase nstring-downcase nstring-capitalize)
859 (string &key (:start index) (:end sequence-end))
862 (defknown string (stringable) string
863 (flushable explicit-check))
865 ;;;; internal non-keyword versions of string predicates:
867 (defknown (string<* string>* string<=* string>=* string/=*)
868 (stringable stringable index sequence-end index sequence-end)
870 (foldable flushable))
873 (stringable stringable index sequence-end index sequence-end)
875 (foldable flushable))
877 ;;;; from the "Eval" chapter:
879 (defknown eval (t) * (recursive))
880 (defknown constantp (t &optional lexenv) boolean
881 (foldable flushable))
883 ;;;; from the "Streams" chapter:
885 (defknown make-synonym-stream (symbol) stream (flushable))
886 (defknown make-broadcast-stream (&rest stream) stream (unsafely-flushable))
887 (defknown make-concatenated-stream (&rest stream) stream (unsafely-flushable))
888 (defknown make-two-way-stream (stream stream) stream (unsafely-flushable))
889 (defknown make-echo-stream (stream stream) stream (flushable))
890 (defknown make-string-input-stream (string &optional index index) stream
892 (defknown make-string-output-stream () stream (flushable))
893 (defknown get-output-stream-string (stream) simple-string ())
894 (defknown streamp (t) boolean (movable foldable flushable))
895 (defknown stream-element-type (stream) type-specifier
896 (movable foldable flushable))
897 (defknown (output-stream-p input-stream-p) (stream) boolean
898 (movable foldable flushable))
899 (defknown close (stream &key (:abort t)) (eql t) ())
901 ;;;; from the "Input/Output" chapter:
903 ;;; (The I/O functions are given effects ANY under the theory that
904 ;;; code motion over I/O operations is particularly confusing and not
905 ;;; very important for efficiency.)
907 (defknown copy-readtable (&optional (or readtable null) (or readtable null))
910 (defknown readtablep (t) boolean (movable foldable flushable))
912 (defknown set-syntax-from-char
913 (character character &optional (or readtable null) readtable) (eql t)
916 (defknown set-macro-character (character callable &optional t readtable)
919 (defknown get-macro-character (character &optional (or readtable null))
920 (values callable boolean) (flushable))
922 (defknown make-dispatch-macro-character (character &optional t readtable)
924 (defknown set-dispatch-macro-character
925 (character character callable &optional readtable) function
927 (defknown get-dispatch-macro-character
928 (character character &optional (or readtable null)) (or callable null)
931 ;;; may return any type due to eof-value...
932 (defknown (read read-preserving-whitespace read-char-no-hang read-char)
933 (&optional streamlike t t t) t (explicit-check))
935 (defknown read-delimited-list (character &optional streamlike t) t
937 (defknown read-line (&optional streamlike t t t) (values t boolean)
939 (defknown unread-char (character &optional streamlike) t
941 (defknown peek-char (&optional (or character (member nil t)) streamlike t t t)
944 (defknown listen (&optional streamlike) boolean (flushable explicit-check))
946 (defknown clear-input (&optional stream) null (explicit-check))
948 (defknown read-from-string
949 (string &optional t t
953 (:preserve-whitespace t))
955 (defknown parse-integer
959 (:radix (integer 2 36))
961 (values (or integer null ()) index))
963 (defknown read-byte (stream &optional t t) t (explicit-check))
970 (:base (integer 2 36))
973 (:level (or unsigned-byte null))
975 (:length (or unsigned-byte null))
979 (:lines (or unsigned-byte null))
980 (:right-margin (or unsigned-byte null))
981 (:miser-width (or unsigned-byte null))
982 (:pprint-dispatch t))
985 :derive-type #'result-type-first-arg)
987 (defknown (prin1 print princ) (t &optional streamlike) t (any explicit-check)
988 :derive-type #'result-type-first-arg)
990 ;;; xxx-TO-STRING functions are not foldable because they depend on
991 ;;; the dynamic environment.
992 (defknown write-to-string
993 (t &key (:escape t) (:radix t) (:base (integer 2 36)) (:readably t)
994 (:circle t) (:pretty t) (:level (or unsigned-byte null))
995 (:length (or unsigned-byte null)) (:case t) (:array t) (:gensym t)
996 (:lines (or unsigned-byte null)) (:right-margin (or unsigned-byte null))
997 (:miser-width (or unsigned-byte null)) (:pprint-dispatch t))
999 (foldable flushable explicit-check))
1001 (defknown (prin1-to-string princ-to-string) (t) simple-string (flushable))
1003 (defknown write-char (character &optional streamlike) character
1005 (defknown (write-string write-line)
1006 (string &optional streamlike &key (:start index) (:end sequence-end))
1010 (defknown (terpri finish-output force-output clear-output)
1011 (&optional streamlike) null
1014 (defknown fresh-line (&optional streamlike) boolean
1017 (defknown write-byte (integer stream) integer
1020 (defknown format ((or streamlike string) (or string function) &rest t)
1024 (defknown (y-or-n-p yes-or-no-p) (&optional string &rest t) boolean
1027 ;;;; from the "File System Interface" chapter:
1029 ;;; (No pathname functions are FOLDABLE because they all potentially
1030 ;;; depend on *DEFAULT-PATHNAME-DEFAULTS*, e.g. to provide a default
1031 ;;; host when parsing a namestring. They are not FLUSHABLE because
1032 ;;; parsing of a PATHNAME-DESIGNATOR might signal an error.)
1034 (defknown wild-pathname-p (pathname-designator
1036 (member nil :host :device
1041 (defknown pathname-match-p (pathname-designator pathname-designator) boolean
1043 (defknown translate-pathname (pathname-designator
1045 pathname-designator &key)
1049 (defknown logical-pathname (pathname-designator) logical-pathname ())
1050 (defknown translate-logical-pathname (pathname-designator &key) pathname ())
1051 (defknown load-logical-pathname-translations (string) t ())
1052 (defknown logical-pathname-translations (logical-host-designator) list ())
1054 (defknown pathname (pathname-designator) pathname (unsafely-flushable))
1055 (defknown truename (pathname-designator) pathname ())
1057 (defknown parse-namestring
1058 (pathname-designator &optional
1059 (or list host string (member :unspecific))
1065 (values (or pathname null) sequence-end)
1068 (defknown merge-pathnames
1069 (pathname-designator &optional pathname-designator pathname-version)
1071 (unsafely-flushable))
1073 (defknown make-pathname
1074 (&key (:defaults pathname-designator)
1075 (:host (or string pathname-host))
1076 (:device (or string pathname-device))
1077 (:directory (or pathname-directory string (member :wild)))
1078 (:name (or pathname-name string (member :wild)))
1079 (:type (or pathname-type string (member :wild)))
1080 (:version pathname-version) (:case (member :local :common)))
1081 pathname (unsafely-flushable))
1083 (defknown pathnamep (t) boolean (movable flushable))
1085 (defknown pathname-host (pathname-designator
1086 &key (:case (member :local :common)))
1087 pathname-host (flushable))
1088 (defknown pathname-device (pathname-designator
1089 &key (:case (member :local :common)))
1090 pathname-device (flushable))
1091 (defknown pathname-directory (pathname-designator
1092 &key (:case (member :local :common)))
1093 pathname-directory (flushable))
1094 (defknown pathname-name (pathname-designator
1095 &key (:case (member :local :common)))
1096 pathname-name (flushable))
1097 (defknown pathname-type (pathname-designator
1098 &key (:case (member :local :common)))
1099 pathname-type (flushable))
1100 (defknown pathname-version (pathname-designator)
1101 pathname-version (flushable))
1103 (defknown (namestring file-namestring directory-namestring host-namestring)
1104 (pathname-designator) simple-string
1105 (unsafely-flushable))
1107 (defknown enough-namestring (pathname-designator &optional pathname-designator)
1109 (unsafely-flushable))
1111 (defknown user-homedir-pathname (&optional t) pathname (flushable))
1114 (pathname-designator &key
1115 (:direction (member :input :output :io :probe))
1116 (:element-type type-specifier)
1117 (:if-exists (member :error :new-version :rename
1118 :rename-and-delete :overwrite
1119 :append :supersede nil))
1120 (:if-does-not-exist (member :error :create nil))
1121 (:external-format (member :default)))
1124 (defknown rename-file (pathname-designator filename)
1125 (values pathname pathname pathname))
1126 (defknown delete-file (pathname-designator) t)
1127 (defknown probe-file (pathname-designator) (or pathname null) ())
1128 (defknown file-write-date (pathname-designator) (or unsigned-byte null)
1130 (defknown file-author (pathname-designator) (or simple-string null)
1133 (defknown file-position (stream &optional
1134 (or unsigned-byte (member :start :end)))
1135 (or unsigned-byte (member t nil)))
1136 (defknown file-length (stream) (or unsigned-byte null) (unsafely-flushable))
1139 ((or filename stream)
1143 (:if-does-not-exist (member :error :create nil))
1144 (:external-format (member :default)))
1147 (defknown directory (pathname-designator &key)
1150 ;;;; from the "Errors" chapter:
1152 (defknown error (t &rest t) nil) ; never returns
1153 (defknown cerror (string t &rest t) null)
1154 (defknown warn (t &rest t) null)
1155 (defknown break (&optional t &rest t) null)
1157 ;;; and analogous SBCL extension:
1158 (defknown bug (t &rest t) nil) ; never returns
1160 ;;;; from the "Miscellaneous" Chapter:
1162 (defknown compile ((or symbol cons) &optional (or list function null))
1163 (values (or function symbol cons) boolean boolean))
1165 (defknown compile-file
1170 (:output-file (or filename
1172 ;; FIXME: This last case is a non-ANSI hack.
1176 (:external-format t)
1181 (values (or pathname null) boolean boolean))
1183 (defknown disassemble (callable &key
1188 (defknown fdocumentation (t symbol)
1192 (defknown describe (t &optional (or stream (member t nil))) (values))
1193 (defknown inspect (t) (values))
1194 (defknown room (&optional (member t nil :default)) (values))
1195 (defknown ed (&optional (or symbol cons filename) &key (:init t) (:display t))
1197 (defknown dribble (&optional filename &key (:if-exists t)) (values))
1199 (defknown apropos (stringable &optional package-designator t) (values))
1200 (defknown apropos-list (stringable &optional package-designator t) list
1203 (defknown get-decoded-time ()
1204 (values (integer 0 59) (integer 0 59) (integer 0 23) (integer 1 31)
1205 (integer 1 12) unsigned-byte (integer 0 6) boolean (rational -24 24))
1208 (defknown get-universal-time () unsigned-byte (flushable))
1210 (defknown decode-universal-time
1211 (unsigned-byte &optional (or null (rational -24 24)))
1212 (values (integer 0 59) (integer 0 59) (integer 0 23) (integer 1 31)
1213 (integer 1 12) unsigned-byte (integer 0 6) boolean (rational -24 24))
1216 (defknown encode-universal-time
1217 ((integer 0 59) (integer 0 59) (integer 0 23) (integer 1 31)
1218 (integer 1 12) unsigned-byte &optional (or null (rational -24 24)))
1222 (defknown (get-internal-run-time get-internal-real-time)
1223 () internal-time (flushable))
1225 (defknown sleep ((or (rational 0) (float 0.0))) null)
1227 ;;; Even though ANSI defines LISP-IMPLEMENTATION-TYPE and
1228 ;;; LISP-IMPLEMENTATION-VERSION to possibly punt and return NIL, we
1229 ;;; know that there's no valid reason for our implementations to ever
1230 ;;; do so, so we can safely guarantee that they'll return strings.
1231 (defknown (lisp-implementation-type lisp-implementation-version)
1232 () simple-string (flushable))
1234 ;;; For any of these functions, meaningful information might not be
1235 ;;; available, so -- unlike the related LISP-IMPLEMENTATION-FOO
1236 ;;; functions -- these really can return NIL.
1237 (defknown (machine-type machine-version machine-instance
1238 software-type software-version
1239 short-site-name long-site-name)
1240 () (or simple-string null) (flushable))
1242 (defknown identity (t) t (movable foldable flushable unsafe)
1243 :derive-type #'result-type-first-arg)
1245 (defknown constantly (t) function (movable flushable))
1246 (defknown complement (function) function (movable flushable))
1248 ;;;; miscellaneous extensions
1250 (defknown get-bytes-consed () unsigned-byte (flushable))
1253 (defknown incf-pcounter (pcounter unsigned-byte) pcounter)
1254 (defknown pcounter->integer (pcounter) unsigned-byte)
1255 (defknown %incf-pcounter-or-fixnum ((or pcounter fixnum) unsigned-byte)
1256 (or pcounter fixnum))
1257 (defknown pcounter-or-fixnum->integer ((or pcounter fixnum)) unsigned-byte)
1259 ;;;; magical compiler frobs
1261 ;;; We can't fold this in general because of SATISFIES. There is a
1262 ;;; special optimizer anyway.
1263 (defknown %typep (t (or type-specifier ctype)) boolean
1264 (movable flushable explicit-check))
1265 (defknown %instance-typep (t (or type-specifier ctype)) boolean
1266 (movable flushable explicit-check))
1268 (defknown %cleanup-point () t)
1269 (defknown %special-bind (t t) t)
1270 (defknown %special-unbind (t) t)
1271 (defknown %listify-rest-args (t index) list (flushable))
1272 (defknown %more-arg-context (t t) (values t index) (flushable))
1273 (defknown %more-arg (t index) t)
1274 (defknown %more-arg-values (t index index) * (flushable))
1275 (defknown %verify-arg-count (index index) (values))
1276 (defknown %arg-count-error (t) nil)
1277 (defknown %unknown-values () *)
1278 (defknown %catch (t t) t)
1279 (defknown %unwind-protect (t t) t)
1280 (defknown (%catch-breakup %unwind-protect-breakup) () t)
1281 (defknown %lexical-exit-breakup (t) t)
1282 (defknown %continue-unwind (t t t) nil)
1283 (defknown %throw (t &rest t) nil) ; This is MV-called.
1284 (defknown %nlx-entry (t) *)
1285 (defknown %%primitive (t t &rest t) *)
1286 (defknown %pop-values (t) t)
1287 (defknown %type-check-error (t t) nil)
1288 (defknown %odd-key-args-error () nil)
1289 (defknown %unknown-key-arg-error (t) nil)
1290 (defknown (%ldb %mask-field) (bit-index bit-index integer) unsigned-byte
1291 (movable foldable flushable explicit-check))
1292 (defknown (%dpb %deposit-field) (integer bit-index bit-index integer) integer
1293 (movable foldable flushable explicit-check))
1294 (defknown %negate (number) number (movable foldable flushable explicit-check))
1295 (defknown %check-bound (array index fixnum) index (movable foldable flushable))
1296 (defknown data-vector-ref (simple-array index) t
1297 (foldable flushable explicit-check))
1298 (defknown data-vector-set (array index t) t (unsafe explicit-check))
1299 (defknown hairy-data-vector-ref (array index) t
1300 (foldable flushable explicit-check))
1301 (defknown hairy-data-vector-set (array index t) t (unsafe explicit-check))
1302 (defknown sb!kernel:%caller-frame-and-pc () (values t t) (flushable))
1303 (defknown sb!kernel:%with-array-data (array index (or index null))
1304 (values (simple-array * (*)) index index index)
1305 (foldable flushable))
1306 (defknown %set-symbol-package (symbol t) t (unsafe))
1307 (defknown %coerce-name-to-fun ((or symbol cons)) function (flushable))
1308 (defknown %coerce-callable-to-fun (callable) function (flushable))
1309 (defknown failed-%with-array-data (t t t) nil)
1310 (defknown %find-position
1311 (t sequence t index sequence-end function function)
1312 (values t (or index null))
1314 (defknown (%find-position-if %find-position-if-not)
1315 (function sequence t index sequence-end function)
1316 (values t (or index null))
1319 (defknown sb!kernel::arg-count-error (t t t t t t) nil (unsafe))
1323 (defknown %aset (array &rest t) t (unsafe))
1324 (defknown %set-row-major-aref (array index t) t (unsafe))
1325 (defknown %rplaca (cons t) t (unsafe))
1326 (defknown %rplacd (cons t) t (unsafe))
1327 (defknown %put (symbol t t) t (unsafe))
1328 (defknown %setelt (sequence index t) t (unsafe))
1329 (defknown %svset (simple-vector index t) t (unsafe))
1330 (defknown %bitset (bit-vector &rest index) bit (unsafe))
1331 (defknown %sbitset (simple-bit-vector &rest index) bit (unsafe))
1332 (defknown %charset (string index character) character (unsafe))
1333 (defknown %scharset (simple-string index character) character (unsafe))
1334 (defknown %set-symbol-value (symbol t) t (unsafe))
1335 (defknown (setf symbol-function) (function symbol) function (unsafe))
1336 (defknown %set-symbol-plist (symbol t) t (unsafe))
1337 (defknown (setf fdocumentation) ((or string null) t symbol)
1340 (defknown %setnth (index list t) t (unsafe))
1341 (defknown %set-fill-pointer (vector index) index (unsafe))
1343 ;;;; miscellaneous internal utilities
1345 (defknown %fun-name (function) t (flushable))
1346 (defknown (setf %fun-name) (t function) t (unsafe))