| 1 | ;;; -*- Mode:Lisp; Package:SI; Lowercase:True; Base:8 -*- |
| 2 | ;;; ** (c) Copyright 1980 Massachusetts Institute of Technology ** |
| 3 | (setq rcs-struct- |
| 4 | "$Header: /usr/lib/lisp/RCS/struct.l,v 1.2 83/08/06 08:41:10 jkf Exp $") |
| 5 | |
| 6 | ;The master copy of this file is in MC:ALAN;NSTRUCT > |
| 7 | ;The current Lisp machine copy is in AI:LISPM2;STRUCT > |
| 8 | ;The current Multics copy is in >udd>Mathlab>Bawden>defstruct.lisp |
| 9 | |
| 10 | ;***** READ THIS PLEASE! ***** |
| 11 | ;If you are thinking of munging anything in this file you might want |
| 12 | ;to consider finding me (ALAN) and asking me to mung it for you. |
| 13 | ;There is more than one copy of this file in the world (it runs in PDP10 |
| 14 | ;and Multics MacLisp and on LispMachines) and whatever amazing |
| 15 | ;features you are considering adding might be usefull to those people |
| 16 | ;as well. If you still cannot contain yourself long enough to find |
| 17 | ;me, AT LEAST send me a piece of mail describing what you did and why. |
| 18 | ;Thanks for reading this flame. |
| 19 | ; Alan Bawden (ALAN@MC) |
| 20 | |
| 21 | ;Things to fix: |
| 22 | |
| 23 | ;For LispMachine: |
| 24 | ; :%P-LDB type (this is hard to do, punt for now.) |
| 25 | |
| 26 | ;For Multics: |
| 27 | ; displacement is a problem (no displace) |
| 28 | ; nth, nthcdr don't exist there |
| 29 | ; ldb, dpb don't exist, so byte fields don't work without Mathlab macros |
| 30 | ; callable accessors don't work |
| 31 | ; dpb is needed at the user's compile time if he is using byte fields. |
| 32 | |
| 33 | #+Franz (environment-maclisp) |
| 34 | |
| 35 | (eval-when (compile) |
| 36 | (cond ((status feature ITS) |
| 37 | (load '|alan;lspenv init|)) |
| 38 | ((status feature Multics) |
| 39 | (load '|>udd>Mathlab>Bawden>lspenv.lisp|)))) |
| 40 | |
| 41 | #+PDP10 |
| 42 | (cond ((status nofeature noldmsg) |
| 43 | (terpri msgfiles) |
| 44 | (princ '#.(and (status feature PDP10) |
| 45 | (maknam (nconc (exploden ";Loading DEFSTRUCT ") |
| 46 | (exploden (caddr (truename infile)))))) |
| 47 | msgfiles))) |
| 48 | |
| 49 | #+Multics |
| 50 | (declare (genprefix defstruct-internal-) |
| 51 | (macros t)) |
| 52 | |
| 53 | #+Franz |
| 54 | (declare (macros t)) |
| 55 | |
| 56 | #M |
| 57 | (eval-when (eval compile) |
| 58 | (setsyntax #/: (ascii #\space) nil)) |
| 59 | |
| 60 | ;; #+Franz |
| 61 | ;; (eval-when (eval compile) |
| 62 | ;; (setsyntax #/: 'vseparator)) ; make :'s go away |
| 63 | |
| 64 | (eval-when (eval) |
| 65 | ;;So we may run the thing interpreted we need the simple |
| 66 | ;;defstruct that lives here: |
| 67 | (cond ((status feature ITS) |
| 68 | (load '|alan;struct initial|)) |
| 69 | ((status feature Multics) |
| 70 | (load '|>udd>Mathlab>Bawden>initial_defstruct|)) |
| 71 | ((status feature Franz) |
| 72 | (load 'structini.l)))) |
| 73 | |
| 74 | (eval-when (compile) |
| 75 | ;;To compile the thing this probably is an old fasl: (!) |
| 76 | (cond ((status feature ITS) |
| 77 | (load '|alan;struct boot|)) |
| 78 | ((status feature Multics) |
| 79 | (load '|>udd>Mathlab>Bawden>boot_defstruct|)) |
| 80 | ((status feature Franz) ; This is only needed for bootstrapping |
| 81 | (cond ((and (null (getd 'defstruct)) |
| 82 | (not (probef |
| 83 | (concat lisp-library-directory "//struct.o")))) |
| 84 | (load 'structini)))) |
| 85 | )) |
| 86 | |
| 87 | #+Multics |
| 88 | (defun nth (n l) |
| 89 | (do ((n n (1- n)) |
| 90 | (l l (cdr l))) |
| 91 | ((zerop n) (car l)))) |
| 92 | |
| 93 | #+Multics |
| 94 | (defun nthcdr (n l) |
| 95 | (do ((n n (1- n)) |
| 96 | (l l (cdr l))) |
| 97 | ((zerop n) l))) |
| 98 | |
| 99 | #+(or Franz Multics) |
| 100 | (defun displace (x y) |
| 101 | (cond ((atom y) |
| 102 | (rplaca x 'progn) |
| 103 | (rplacd x (list y))) |
| 104 | (t |
| 105 | (rplaca x (car y)) |
| 106 | (rplacd x (cdr y)))) |
| 107 | x) |
| 108 | |
| 109 | ;;; You might think you could use progn for this, but you can't! |
| 110 | (defun defstruct-dont-displace (x y) |
| 111 | x ;ignored |
| 112 | y) |
| 113 | \f |
| 114 | ;;; Eval this before attempting incremental compilation |
| 115 | (eval-when (eval compile) |
| 116 | |
| 117 | #+PDP10 |
| 118 | (defmacro append-symbols args |
| 119 | (do ((l (reverse args) (cdr l)) |
| 120 | (x) |
| 121 | (a nil (if (or (atom x) |
| 122 | (not (eq (car x) 'quote))) |
| 123 | (if (null a) |
| 124 | `(exploden ,x) |
| 125 | `(nconc (exploden ,x) ,a)) |
| 126 | (let ((l (exploden (cadr x)))) |
| 127 | (cond ((null a) `',l) |
| 128 | ((= 1 (length l)) `(cons ,(car l) ,a)) |
| 129 | (t `(append ',l ,a))))))) |
| 130 | |
| 131 | ((null l) `(implode ,a)) |
| 132 | (setq x (car l)))) |
| 133 | |
| 134 | #+Multics |
| 135 | (defmacro append-symbols args |
| 136 | `(make_atom (catenate . ,args))) |
| 137 | |
| 138 | #+LispM |
| 139 | (defmacro append-symbols args |
| 140 | `(intern (string-append . ,args))) |
| 141 | |
| 142 | #+Franz |
| 143 | (defmacro append-symbols (&rest args) |
| 144 | `(concat . ,args)) |
| 145 | |
| 146 | (defmacro defstruct-putprop (sym val ind) |
| 147 | `(push `(defprop ,,sym ,,val ,,ind) returns)) |
| 148 | |
| 149 | (defmacro defstruct-put-macro (sym fcn) |
| 150 | #M `(defstruct-putprop ,sym ,fcn 'macro) |
| 151 | #+lispm |
| 152 | (setq fcn (if (and (not (atom fcn)) |
| 153 | (eq (car fcn) 'quote)) |
| 154 | `'(macro . ,(cadr fcn)) |
| 155 | `(cons 'macro ,fcn))) |
| 156 | #+Franz |
| 157 | (setq fcn (if (and (not (atom fcn)) |
| 158 | (eq (car fcn) 'quote)) |
| 159 | `'(macro (macroarg) (,(cadr fcn) macroarg)) |
| 160 | `(cons 'macro ,fcn))) ;; probably incorrect |
| 161 | |
| 162 | #Q `(push `(fdefine ',,sym ',,fcn t) returns) |
| 163 | #+Franz `(push `(def ,,sym ,,fcn) returns) |
| 164 | ) |
| 165 | |
| 166 | (defmacro make-empty () `'%%defstruct-empty%%) |
| 167 | |
| 168 | (defmacro emptyp (x) `(eq ,x '%%defstruct-empty%%)) |
| 169 | \f |
| 170 | ;;;Here we must deal with the fact that error reporting works |
| 171 | ;;;differently everywhere! |
| 172 | |
| 173 | #+(or Franz PDP10) |
| 174 | ;;;first arg is ALWAYS a symbol or a quoted symbol: |
| 175 | (defmacro defstruct-error (message &rest args) |
| 176 | (let* ((chars (nconc (exploden (if (atom message) |
| 177 | message |
| 178 | (cadr message))) |
| 179 | '(#/.))) ;"Bad frob" => "Bad frob." |
| 180 | (new-message |
| 181 | (maknam (if (null args) |
| 182 | chars |
| 183 | (let ((c (car chars))) ;"Bad frob." => "-- bad frob." |
| 184 | (or (< c #/A) |
| 185 | (> c #/Z) |
| 186 | (rplaca chars (+ c #o40))) |
| 187 | (append '(#/- #/- #\space) chars)))))) |
| 188 | `(error ',new-message |
| 189 | ,@(cond ((null args) `()) |
| 190 | ((null (cdr args)) `(,(car args))) |
| 191 | (t `((list ,@args))))))) |
| 192 | |
| 193 | #+Multics |
| 194 | ;;;first arg is ALWAYS a string: |
| 195 | (defmacro defstruct-error (message &rest args) |
| 196 | `(error ,(catenate "defstruct: " |
| 197 | message |
| 198 | (if (null args) |
| 199 | "." |
| 200 | ": ")) |
| 201 | ,@(cond ((null args) `()) |
| 202 | ((null (cdr args)) `(,(car args))) |
| 203 | (t `((list ,@args)))))) |
| 204 | |
| 205 | #+LispM |
| 206 | ;;;first arg is ALWAYS a string: |
| 207 | (defmacro defstruct-error (message &rest args) |
| 208 | `(ferror nil |
| 209 | ,(string-append message |
| 210 | (if (null args) |
| 211 | "." |
| 212 | ":~@{ ~S~}")) |
| 213 | ,@args)) |
| 214 | |
| 215 | );End of eval-when (eval compile) |
| 216 | \f |
| 217 | ;;;If you mung the the ordering af any of the slots in this structure, |
| 218 | ;;;be sure to change the version slot and the definition of the function |
| 219 | ;;;get-defstruct-description. Munging the defstruct-slot-description |
| 220 | ;;;structure should also cause you to change the version "number" in this manner. |
| 221 | (defstruct (defstruct-description |
| 222 | (:type :list) |
| 223 | (:default-pointer description) |
| 224 | (:conc-name defstruct-description-) |
| 225 | (:alterant nil)) |
| 226 | (version 'one) |
| 227 | type |
| 228 | (displace 'defstruct-dont-displace) |
| 229 | slot-alist |
| 230 | named-p |
| 231 | constructors |
| 232 | (default-pointer nil) |
| 233 | (but-first nil) |
| 234 | size |
| 235 | (property-alist nil) |
| 236 | ;;end of "expand-time" slots |
| 237 | name |
| 238 | include |
| 239 | (initial-offset 0) |
| 240 | (eval-when '(eval compile load)) |
| 241 | alterant |
| 242 | (conc-name nil) |
| 243 | (callable-accessors #M nil #Q t) |
| 244 | (size-macro nil) |
| 245 | (size-symbol nil) |
| 246 | ) |
| 247 | |
| 248 | (defun get-defstruct-description (name) |
| 249 | (let ((description (get name 'defstruct-description))) |
| 250 | (cond ((null description) |
| 251 | (defstruct-error |
| 252 | "A structure with this name has not been defined" name)) |
| 253 | ((not (eq (defstruct-description-version) 'one)) |
| 254 | (defstruct-error "The description of this structure is out of date, |
| 255 | it should be recompiled using the current version of defstruct" |
| 256 | name)) |
| 257 | (t description)))) |
| 258 | |
| 259 | ;;;See note above defstruct-description structure before munging this one. |
| 260 | (defstruct (defstruct-slot-description |
| 261 | (:type :list) |
| 262 | (:default-pointer slot-description) |
| 263 | (:conc-name defstruct-slot-description-) |
| 264 | (:alterant nil)) |
| 265 | number |
| 266 | (ppss nil) |
| 267 | init-code |
| 268 | (type 'notype) |
| 269 | (property-alist nil) |
| 270 | ref-macro-name |
| 271 | ) |
| 272 | |
| 273 | ;;;Perhaps this structure wants a version slot too? |
| 274 | (defstruct (defstruct-type-description |
| 275 | (:type :list) |
| 276 | (:default-pointer type-description) |
| 277 | (:conc-name defstruct-type-description-) |
| 278 | (:alterant nil)) |
| 279 | ref-expander |
| 280 | ref-no-args |
| 281 | cons-expander |
| 282 | cons-flavor |
| 283 | (cons-keywords nil) |
| 284 | (named-type nil) |
| 285 | (overhead 0) |
| 286 | (defstruct-expander nil) |
| 287 | ) |
| 288 | \f |
| 289 | ;; (DEFSTRUCT (<name> . <options>) . <slots>) or (DEFSTRUCT <name> . <slots>) |
| 290 | ;; |
| 291 | ;; <options> is of the form (<option> <option> (<option> <val>) ...) |
| 292 | ;; |
| 293 | ;; <slots> is of the form (<slot> (<slot> <initial-value>) ...) |
| 294 | ;; |
| 295 | ;; Options: |
| 296 | ;; :TYPE defaults to HUNK |
| 297 | ;; :CONSTRUCTOR defaults to "MAKE-<name>" |
| 298 | ;; :DEFAULT-POINTER defaults to empty (if no <val> given defaults to "<name>") |
| 299 | ;; :CONC-NAME defaults to empty (if no <val> given defaults to "<name>-") |
| 300 | ;; :SIZE-SYMBOL defaults to empty (if no <val> given defaults to "<name>-SIZE") |
| 301 | ;; :SIZE-MACRO defaults to empty (if no <val> given defaults to "<name>-SIZE") |
| 302 | ;; :ALTERANT defaults to "ALTER-<name>" |
| 303 | ;; :BUT-FIRST must have a <val> given |
| 304 | ;; :INCLUDE must have a <val> given |
| 305 | ;; :PROPERTY (:property foo bar) gives the structure a foo property of bar. |
| 306 | ;; :INITIAL-OFFSET can cause defstruct to skip over that many slots. |
| 307 | ;; :NAMED takes no value. Tries to make the structure a named type. |
| 308 | ;; :CALLABLE-ACCESSORS defaults to T on the LispMachine, NIL elsewhere. |
| 309 | ;; <type> any type name can be used without a <val> instead of saying (TYPE <type>) |
| 310 | ;; <other> any symbol with a non-nil :defstruct-option property. You say |
| 311 | ;; (<other> <val>) and the effect is that of (:property <other> <val>) |
| 312 | ;; |
| 313 | ;; Properties used: |
| 314 | ;; DEFSTRUCT-TYPE-DESCRIPTION each type has one, it is a type-description. |
| 315 | ;; DEFSTRUCT-NAME each constructor, alterant and size macro has one, it is a name. |
| 316 | ;; DEFSTRUCT-DESCRIPTION each name has one, it is a description (see below). |
| 317 | ;; DEFSTRUCT-SLOT each accesor has one, it is of the form: (<name> . <slot>) |
| 318 | ;; :DEFSTRUCT-OPTION if a symbol FOO has this property then it can be used as an |
| 319 | ;; option giving the structure a FOO property of the value (which must be given). |
| 320 | \f |
| 321 | (defmacro defstruct (options &body items) |
| 322 | (let* ((description (defstruct-parse-options options)) |
| 323 | (type-description (get (defstruct-description-type) |
| 324 | 'defstruct-type-description)) |
| 325 | (name (defstruct-description-name)) |
| 326 | (new-slots (defstruct-parse-items items description)) |
| 327 | (returns nil)) |
| 328 | (push `',name returns) |
| 329 | (or (null (defstruct-type-description-defstruct-expander)) |
| 330 | (setq returns (append (funcall (defstruct-type-description-defstruct-expander) |
| 331 | description) |
| 332 | returns))) |
| 333 | #Q (push `(record-source-file-name ',name) returns) |
| 334 | (defstruct-putprop name description 'defstruct-description) |
| 335 | (let ((alterant (defstruct-description-alterant)) |
| 336 | (size-macro (defstruct-description-size-macro)) |
| 337 | (size-symbol (defstruct-description-size-symbol))) |
| 338 | (cond (alterant |
| 339 | (defstruct-put-macro alterant 'defstruct-expand-alter-macro) |
| 340 | (defstruct-putprop alterant name 'defstruct-name))) |
| 341 | (cond (size-macro |
| 342 | (defstruct-put-macro size-macro 'defstruct-expand-size-macro) |
| 343 | (defstruct-putprop size-macro name 'defstruct-name))) |
| 344 | (cond (size-symbol |
| 345 | (push `(#M defvar #Q defconst #F setq ,size-symbol |
| 346 | ,(+ (defstruct-description-size) |
| 347 | (defstruct-type-description-overhead))) |
| 348 | returns)))) |
| 349 | (do cs (defstruct-description-constructors) (cdr cs) (null cs) |
| 350 | (defstruct-put-macro (caar cs) 'defstruct-expand-cons-macro) |
| 351 | (defstruct-putprop (caar cs) name 'defstruct-name)) |
| 352 | `(eval-when ,(defstruct-description-eval-when) |
| 353 | ,.(defstruct-define-ref-macros new-slots description) |
| 354 | . ,returns))) |
| 355 | \f |
| 356 | (defun defstruct-parse-options (options) |
| 357 | (let ((name (if (atom options) options (car options))) |
| 358 | (type nil) |
| 359 | (constructors (make-empty)) |
| 360 | (alterant (make-empty)) |
| 361 | (included nil) |
| 362 | (named-p nil) |
| 363 | (description (make-defstruct-description))) |
| 364 | (setf (defstruct-description-name) name) |
| 365 | (do ((op) (val) (vals) |
| 366 | (options (if (atom options) nil (cdr options)) |
| 367 | (cdr options))) |
| 368 | ((null options)) |
| 369 | (if (atom (setq op (car options))) |
| 370 | (setq vals nil) |
| 371 | (setq op (prog1 (car op) (setq vals (cdr op))))) |
| 372 | (setq val (if (null vals) (make-empty) (car vals))) |
| 373 | #Q AGAIN |
| 374 | (selectq op |
| 375 | (:type |
| 376 | (if (emptyp val) |
| 377 | (defstruct-error |
| 378 | "The type option to defstruct must have a value given" |
| 379 | name)) |
| 380 | (setq type val)) |
| 381 | (:default-pointer |
| 382 | (setf (defstruct-description-default-pointer) |
| 383 | (if (emptyp val) name val))) |
| 384 | (:but-first |
| 385 | (if (emptyp val) |
| 386 | (defstruct-error |
| 387 | "The but-first option to defstruct must have a value given" |
| 388 | name)) |
| 389 | (setf (defstruct-description-but-first) val)) |
| 390 | (:conc-name |
| 391 | (setf (defstruct-description-conc-name) |
| 392 | (if (emptyp val) |
| 393 | (append-symbols name '-) |
| 394 | val))) |
| 395 | (:callable-accessors |
| 396 | (setf (defstruct-description-callable-accessors) |
| 397 | (if (emptyp val) t val))) |
| 398 | (:displace |
| 399 | (setf (defstruct-description-displace) |
| 400 | (cond ((or (emptyp val) |
| 401 | (eq val 't)) |
| 402 | 'displace) |
| 403 | ((null val) 'defstruct-dont-displace) |
| 404 | (t val)))) |
| 405 | (:constructor |
| 406 | (cond ((null val) |
| 407 | (setq constructors nil)) |
| 408 | (t |
| 409 | (and (emptyp val) |
| 410 | (setq val (append-symbols 'make- name))) |
| 411 | (setq val (cons val (cdr vals))) |
| 412 | (if (emptyp constructors) |
| 413 | (setq constructors (list val)) |
| 414 | (push val constructors))))) |
| 415 | (:alterant |
| 416 | (setq alterant val)) |
| 417 | (:size-macro |
| 418 | (setf (defstruct-description-size-macro) |
| 419 | (if (emptyp val) |
| 420 | (append-symbols name '-size) |
| 421 | val))) |
| 422 | (:size-symbol |
| 423 | (setf (defstruct-description-size-symbol) |
| 424 | (if (emptyp val) |
| 425 | (append-symbols name '-size) |
| 426 | val))) |
| 427 | (:include |
| 428 | (and (emptyp val) |
| 429 | (defstruct-error |
| 430 | "The include option to defstruct requires a value" |
| 431 | name)) |
| 432 | (setq included val) |
| 433 | (setf (defstruct-description-include) vals)) |
| 434 | (:property |
| 435 | (push (cons (car vals) (if (null (cdr vals)) t (cadr vals))) |
| 436 | (defstruct-description-property-alist))) |
| 437 | (:named |
| 438 | (or (emptyp val) |
| 439 | (defstruct-error |
| 440 | "The named option to defstruct doesn't take a value" name)) |
| 441 | (setq named-p t)) |
| 442 | (:eval-when |
| 443 | (and (emptyp val) |
| 444 | (defstruct-error |
| 445 | "The eval-when option to defstruct requires a value" |
| 446 | name)) |
| 447 | (setf (defstruct-description-eval-when) val)) |
| 448 | (:initial-offset |
| 449 | (and (or (emptyp val) |
| 450 | (not (fixp val))) |
| 451 | (defstruct-error |
| 452 | "The initial-offset option to defstruct requires a fixnum" |
| 453 | name)) |
| 454 | (setf (defstruct-description-initial-offset) val)) |
| 455 | (otherwise |
| 456 | (cond ((get op 'defstruct-type-description) |
| 457 | (or (emptyp val) |
| 458 | (defstruct-error |
| 459 | "defstruct type used as an option with a value" |
| 460 | op 'in name)) |
| 461 | (setq type op)) |
| 462 | ((get op ':defstruct-option) |
| 463 | (push (cons op (if (emptyp val) t val)) |
| 464 | (defstruct-description-property-alist))) |
| 465 | (t |
| 466 | #Q (multiple-value-bind (new foundp) |
| 467 | (intern-soft op si:pkg-user-package) |
| 468 | (or (not foundp) |
| 469 | (eq op new) |
| 470 | (progn (setq op new) (go AGAIN)))) |
| 471 | (defstruct-error |
| 472 | "defstruct doesn't understand this option" |
| 473 | op 'in name)))))) |
| 474 | (cond ((emptyp constructors) |
| 475 | (setq constructors |
| 476 | (list (cons (append-symbols 'make- name) |
| 477 | nil))))) |
| 478 | (setf (defstruct-description-constructors) constructors) |
| 479 | (cond ((emptyp alterant) |
| 480 | (setq alterant |
| 481 | (append-symbols 'alter- name)))) |
| 482 | (setf (defstruct-description-alterant) alterant) |
| 483 | (cond ((not (null type)) |
| 484 | (let ((type-description |
| 485 | (or (get type 'defstruct-type-description) |
| 486 | #Q (multiple-value-bind |
| 487 | (new foundp) |
| 488 | (intern-soft type si:pkg-user-package) |
| 489 | (and foundp |
| 490 | (not (eq type new)) |
| 491 | (progn (setq type new) |
| 492 | (get type 'defstruct-type-description)))) |
| 493 | (defstruct-error |
| 494 | "Unknown type in defstruct" |
| 495 | type 'in name)))) |
| 496 | (if named-p |
| 497 | (setq type |
| 498 | (or (defstruct-type-description-named-type) |
| 499 | (defstruct-error |
| 500 | "There is no way to make this defstruct type named" |
| 501 | type 'in name))))))) |
| 502 | (cond (included |
| 503 | (let ((d (get-defstruct-description included))) |
| 504 | (if (null type) |
| 505 | (setq type (defstruct-description-type d)) |
| 506 | (or (eq type (defstruct-description-type d)) |
| 507 | (defstruct-error |
| 508 | "defstruct types must agree for include option" |
| 509 | included 'included-by name))) |
| 510 | (and named-p |
| 511 | (not (eq type (defstruct-type-description-named-type |
| 512 | (or (get type 'defstruct-type-description) |
| 513 | (defstruct-error |
| 514 | "Unknown type in defstruct" |
| 515 | type 'in name 'including included))))) |
| 516 | (defstruct-error |
| 517 | "Included defstruct's type isn't a named type" |
| 518 | included 'included-by name)))) |
| 519 | ((null type) |
| 520 | (setq type |
| 521 | (cond (named-p |
| 522 | #+PDP10 ':named-hunk |
| 523 | #+Franz ':named-vector |
| 524 | #+Multics ':named-list |
| 525 | #+LispM ':named-array) |
| 526 | (t |
| 527 | #+PDP10 ':hunk |
| 528 | #+Franz ':named-vector |
| 529 | #+Multics ':list |
| 530 | #+LispM ':array))))) |
| 531 | (let ((type-description (or (get type 'defstruct-type-description) |
| 532 | (defstruct-error |
| 533 | "Undefined defstruct type" |
| 534 | type 'in name)))) |
| 535 | (setf (defstruct-description-type) type) |
| 536 | (setf (defstruct-description-named-p) |
| 537 | (eq (defstruct-type-description-named-type) type))) |
| 538 | description)) |
| 539 | \f |
| 540 | (defun defstruct-parse-items (items description) |
| 541 | (let ((name (defstruct-description-name)) |
| 542 | (offset (defstruct-description-initial-offset)) |
| 543 | (include (defstruct-description-include)) |
| 544 | (o-slot-alist nil) |
| 545 | (conc-name (defstruct-description-conc-name))) |
| 546 | (or (null include) |
| 547 | (let ((d (get (car include) 'defstruct-description))) |
| 548 | (setq offset (+ offset (defstruct-description-size d))) |
| 549 | (setq o-slot-alist |
| 550 | (subst nil nil (defstruct-description-slot-alist d))) |
| 551 | (do ((l (cdr include) (cdr l)) |
| 552 | (it) (val)) |
| 553 | ((null l)) |
| 554 | (cond ((atom (setq it (car l))) |
| 555 | (setq val (make-empty))) |
| 556 | (t |
| 557 | (setq val (cadr it)) |
| 558 | (setq it (car it)))) |
| 559 | (let ((slot-description (cdr (assq it o-slot-alist)))) |
| 560 | (and (null slot-description) |
| 561 | (defstruct-error |
| 562 | "Unknown slot in included defstruct" |
| 563 | it 'in include 'included-by name)) |
| 564 | (setf (defstruct-slot-description-init-code) val))))) |
| 565 | (do ((i offset (1+ i)) |
| 566 | (l items (cdr l)) |
| 567 | (slot-alist nil) |
| 568 | #+PDP10 (chars (exploden conc-name))) |
| 569 | ((null l) |
| 570 | (setq slot-alist (nreverse slot-alist)) |
| 571 | (setf (defstruct-description-size) i) |
| 572 | (setf (defstruct-description-slot-alist) |
| 573 | (nconc o-slot-alist slot-alist)) |
| 574 | slot-alist) |
| 575 | (cond ((atom (car l)) |
| 576 | (push (defstruct-parse-one-field |
| 577 | (car l) i nil nil conc-name #+PDP10 chars) |
| 578 | slot-alist)) |
| 579 | ((atom (caar l)) |
| 580 | (push (defstruct-parse-one-field |
| 581 | (caar l) i nil (cdar l) conc-name #+PDP10 chars) |
| 582 | slot-alist)) |
| 583 | (t |
| 584 | (do ll (car l) (cdr ll) (null ll) |
| 585 | (push (defstruct-parse-one-field |
| 586 | (caar ll) i (cadar ll) |
| 587 | (cddar ll) conc-name #+PDP10 chars) |
| 588 | slot-alist))))))) |
| 589 | |
| 590 | (defun defstruct-parse-one-field (it number ppss rest conc-name #+PDP10 chars) |
| 591 | (let ((mname (if conc-name #+PDP10 (implode (append chars (exploden it))) |
| 592 | #+Multics (make_atom (catenate conc-name it)) |
| 593 | #+Franz (concat conc-name it) |
| 594 | #+LispM (intern (string-append conc-name it)) |
| 595 | it))) |
| 596 | (cons it (make-defstruct-slot-description |
| 597 | number number |
| 598 | ppss ppss |
| 599 | init-code (if (null rest) (make-empty) (car rest)) |
| 600 | ref-macro-name mname)))) |
| 601 | \f |
| 602 | (defun defstruct-define-ref-macros (new-slots description) |
| 603 | (let ((name (defstruct-description-name)) |
| 604 | (returns nil)) |
| 605 | (if (not (defstruct-description-callable-accessors)) |
| 606 | (do ((l new-slots (cdr l)) |
| 607 | (mname)) |
| 608 | ((null l)) |
| 609 | (setq mname (defstruct-slot-description-ref-macro-name (cdar l))) |
| 610 | (defstruct-put-macro mname 'defstruct-expand-ref-macro) |
| 611 | (defstruct-putprop mname (cons name (caar l)) 'defstruct-slot)) |
| 612 | (let ((type-description |
| 613 | (get (defstruct-description-type) |
| 614 | 'defstruct-type-description))) |
| 615 | (let ((code (defstruct-type-description-ref-expander)) |
| 616 | (n (defstruct-type-description-ref-no-args)) |
| 617 | (but-first (defstruct-description-but-first)) |
| 618 | (default-pointer (defstruct-description-default-pointer))) |
| 619 | (do ((args nil (cons (gensym) args)) |
| 620 | (i n (1- i))) |
| 621 | ((< i 2) |
| 622 | ;;Last arg (if it exists) is name of structure, |
| 623 | ;; for documentation purposes. |
| 624 | (and (= i 1) |
| 625 | (setq args (cons name args))) |
| 626 | (let ((body (cons (if but-first |
| 627 | `(,but-first ,(car args)) |
| 628 | (car args)) |
| 629 | (cdr args)))) |
| 630 | (and default-pointer |
| 631 | (setq args `((,(car args) ,default-pointer) |
| 632 | &optional . ,(cdr args)))) |
| 633 | (setq args (reverse args)) |
| 634 | (setq body (reverse body)) |
| 635 | (do ((l new-slots (cdr l)) |
| 636 | (mname)) |
| 637 | ((null l)) |
| 638 | (setq mname (defstruct-slot-description-ref-macro-name |
| 639 | (cdar l))) |
| 640 | #M ;;This must come BEFORE the defun. THINK! |
| 641 | (defstruct-put-macro mname 'defstruct-expand-ref-macro) |
| 642 | (let ((ref (lexpr-funcall |
| 643 | code |
| 644 | (defstruct-slot-description-number (cdar l)) |
| 645 | description |
| 646 | body)) |
| 647 | (ppss (defstruct-slot-description-ppss (cdar l)))) |
| 648 | (push `(#+(or Franz Maclisp) |
| 649 | defun #Q defsubst ,mname ,args |
| 650 | ,(if (null ppss) ref `(ldb ,ppss ,ref))) |
| 651 | returns)) |
| 652 | (defstruct-putprop mname |
| 653 | (cons name (caar l)) |
| 654 | 'defstruct-slot)))))))) |
| 655 | returns)) |
| 656 | \f |
| 657 | (defun defstruct-expand-size-macro (x) |
| 658 | (let ((description (get-defstruct-description (get (car x) 'defstruct-name)))) |
| 659 | (let ((type-description (get (defstruct-description-type) |
| 660 | 'defstruct-type-description))) |
| 661 | (funcall (defstruct-description-displace) |
| 662 | x |
| 663 | (+ (defstruct-description-size) |
| 664 | (defstruct-type-description-overhead)))))) |
| 665 | |
| 666 | (defun defstruct-expand-ref-macro (x) |
| 667 | (let* ((pair (get (car x) 'defstruct-slot)) |
| 668 | (description (get-defstruct-description (car pair))) |
| 669 | (type-description |
| 670 | (get (defstruct-description-type) 'defstruct-type-description)) |
| 671 | (code (defstruct-type-description-ref-expander)) |
| 672 | (n (defstruct-type-description-ref-no-args)) |
| 673 | (args (reverse (cdr x))) |
| 674 | (nargs (length args)) |
| 675 | (default (defstruct-description-default-pointer)) |
| 676 | (but-first (defstruct-description-but-first))) |
| 677 | (cond ((= n nargs) |
| 678 | (and but-first |
| 679 | (rplaca args `(,but-first ,(car args))))) |
| 680 | ((and (= n (1+ nargs)) default) |
| 681 | (setq args (cons (if but-first |
| 682 | `(,but-first ,default) |
| 683 | default) |
| 684 | args))) |
| 685 | (t |
| 686 | (defstruct-error |
| 687 | "Wrong number of args to an accessor macro" x))) |
| 688 | (let* ((slot-description |
| 689 | (cdr (or (assq (cdr pair) |
| 690 | (defstruct-description-slot-alist)) |
| 691 | (defstruct-error |
| 692 | "This slot no longer exists in this structure" |
| 693 | (cdr pair) 'in (car pair))))) |
| 694 | (ref (lexpr-funcall |
| 695 | code |
| 696 | (defstruct-slot-description-number) |
| 697 | description |
| 698 | (nreverse args))) |
| 699 | (ppss (defstruct-slot-description-ppss))) |
| 700 | (funcall (defstruct-description-displace) |
| 701 | x |
| 702 | (if (null ppss) |
| 703 | ref |
| 704 | `(ldb ,ppss ,ref)))))) |
| 705 | \f |
| 706 | (defun defstruct-parse-setq-style-slots (l slots others x) |
| 707 | (do ((l l (cddr l)) |
| 708 | (kludge (cons nil nil))) |
| 709 | ((null l) kludge) |
| 710 | (or (and (cdr l) |
| 711 | (symbolp (car l))) |
| 712 | (defstruct-error |
| 713 | "Bad argument list to constructor or alterant macro" x)) |
| 714 | (defstruct-make-init-dsc kludge (car l) (cadr l) slots others x))) |
| 715 | |
| 716 | (defun defstruct-make-init-dsc (kludge name code slots others x) |
| 717 | (let ((p (assq name slots))) |
| 718 | (if (null p) |
| 719 | (if (memq name others) |
| 720 | (push (cons name code) (cdr kludge)) |
| 721 | (defstruct-error |
| 722 | "Unknown slot to constructor or alterant macro" x)) |
| 723 | (let* ((slot-description (cdr p)) |
| 724 | (number (defstruct-slot-description-number)) |
| 725 | (ppss (defstruct-slot-description-ppss)) |
| 726 | (dsc (assoc number (car kludge)))) |
| 727 | (cond ((null dsc) |
| 728 | (setq dsc (list* number nil (make-empty) 0 0 nil)) |
| 729 | (push dsc (car kludge)))) |
| 730 | (cond ((null ppss) |
| 731 | (setf (car (cddr dsc)) code) |
| 732 | (setf (cadr dsc) t)) |
| 733 | (t (cond #-Franz |
| 734 | ((and (numberp ppss) (numberp code)) |
| 735 | (setf (ldb ppss (cadr (cddr dsc))) -1) |
| 736 | (setf (ldb ppss (caddr (cddr dsc))) code)) |
| 737 | (t |
| 738 | (push (cons ppss code) (cdddr (cddr dsc))))) |
| 739 | (or (eq t (cadr dsc)) |
| 740 | (push name (cadr dsc))))))))) |
| 741 | |
| 742 | (defun defstruct-code-from-dsc (dsc) |
| 743 | (let ((code (car (cddr dsc))) |
| 744 | (mask (cadr (cddr dsc))) |
| 745 | (bits (caddr (cddr dsc)))) |
| 746 | (if (emptyp code) |
| 747 | (setq code bits) |
| 748 | (or (zerop mask) |
| 749 | (setq code (if (numberp code) |
| 750 | (boole 7 bits (boole 2 mask code)) |
| 751 | (if (zerop (logand mask |
| 752 | (1+ (logior mask (1- mask))))) |
| 753 | (let ((ss (haulong (boole 2 mask (1- mask))))) |
| 754 | `(dpb ,(lsh bits (- ss)) |
| 755 | ,(logior (lsh ss 6) |
| 756 | (logand #o77 |
| 757 | (- (haulong mask) ss))) |
| 758 | ,code)) |
| 759 | `(boole 7 ,bits (boole 2 ,mask ,code))))))) |
| 760 | (do l (cdddr (cddr dsc)) (cdr l) (null l) |
| 761 | (setq code `(dpb ,(cdar l) ,(caar l) ,code))) |
| 762 | code)) |
| 763 | \f |
| 764 | (defun defstruct-expand-cons-macro (x) |
| 765 | (let* ((description (get-defstruct-description (get (car x) 'defstruct-name))) |
| 766 | (type-description (get (defstruct-description-type) |
| 767 | 'defstruct-type-description)) |
| 768 | (slot-alist (defstruct-description-slot-alist)) |
| 769 | (cons-keywords (defstruct-type-description-cons-keywords)) |
| 770 | inits kludge |
| 771 | (constructor-description |
| 772 | (cdr (or (assq (car x) (defstruct-description-constructors)) |
| 773 | (defstruct-error |
| 774 | "This constructor is no longer defined for this structure" |
| 775 | (car x) 'in (defstruct-description-name))))) |
| 776 | (aux nil) |
| 777 | (aux-init nil)) |
| 778 | (if (null constructor-description) |
| 779 | (setq kludge (defstruct-parse-setq-style-slots (cdr x) |
| 780 | slot-alist |
| 781 | cons-keywords |
| 782 | x)) |
| 783 | (prog (args l) |
| 784 | (setq kludge (cons nil nil)) |
| 785 | (setq args (cdr x)) |
| 786 | (setq l (car constructor-description)) |
| 787 | R (cond ((null l) |
| 788 | (if (null args) |
| 789 | (return nil) |
| 790 | (go barf-tma))) |
| 791 | ((atom l) (go barf)) |
| 792 | ((eq (car l) '&optional) (go O)) |
| 793 | ((eq (car l) '&rest) (go S)) |
| 794 | ((eq (car l) '&aux) (go A)) |
| 795 | ((null args) (go barf-tfa))) |
| 796 | (defstruct-make-init-dsc kludge |
| 797 | (pop l) |
| 798 | (pop args) |
| 799 | slot-alist |
| 800 | cons-keywords |
| 801 | x) |
| 802 | (go R) |
| 803 | O (and (null args) (go OD)) |
| 804 | (pop l) |
| 805 | (cond ((null l) (go barf-tma)) |
| 806 | ((atom l) (go barf)) |
| 807 | ((eq (car l) '&optional) (go barf)) |
| 808 | ((eq (car l) '&rest) (go S)) |
| 809 | ((eq (car l) '&aux) (go barf-tma))) |
| 810 | (defstruct-make-init-dsc kludge |
| 811 | (if (atom (car l)) (car l) (caar l)) |
| 812 | (pop args) |
| 813 | slot-alist |
| 814 | cons-keywords |
| 815 | x) |
| 816 | (go O) |
| 817 | OD (pop l) |
| 818 | (cond ((null l) (return nil)) |
| 819 | ((atom l) (go barf)) |
| 820 | ((eq (car l) '&optional) (go barf)) |
| 821 | ((eq (car l) '&rest) (go S)) |
| 822 | ((eq (car l) '&aux) (go A))) |
| 823 | (or (atom (car l)) |
| 824 | (defstruct-make-init-dsc kludge |
| 825 | (caar l) |
| 826 | (cadar l) |
| 827 | slot-alist |
| 828 | cons-keywords |
| 829 | x)) |
| 830 | (go OD) |
| 831 | S (and (atom (cdr l)) (go barf)) |
| 832 | (defstruct-make-init-dsc kludge |
| 833 | (cadr l) |
| 834 | `(list . ,args) |
| 835 | slot-alist |
| 836 | cons-keywords |
| 837 | x) |
| 838 | (setq l (cddr l)) |
| 839 | (and (null l) (return nil)) |
| 840 | (and (atom l) (go barf)) |
| 841 | (or (eq (car l) '&aux) (go barf)) |
| 842 | A (pop l) |
| 843 | (cond ((null l) (return nil)) |
| 844 | ((atom l) (go barf)) |
| 845 | ((atom (car l)) |
| 846 | (push (car l) aux) |
| 847 | (push (make-empty) aux-init)) |
| 848 | (t |
| 849 | (push (caar l) aux) |
| 850 | (push (cadar l) aux-init))) |
| 851 | (go A) |
| 852 | barf (defstruct-error |
| 853 | "Bad format for defstruct constructor arglist" |
| 854 | `(,(car x) . ,(car constructor-description))) |
| 855 | barf-tfa (defstruct-error "Too few arguments to constructor macro" x) |
| 856 | barf-tma (defstruct-error "Too many arguments to constructor macro" x))) |
| 857 | (do l slot-alist (cdr l) (null l) |
| 858 | (let* ((name (caar l)) |
| 859 | (slot-description (cdar l)) |
| 860 | (code (do ((aux aux (cdr aux)) |
| 861 | (aux-init aux-init (cdr aux-init))) |
| 862 | ((null aux) (defstruct-slot-description-init-code)) |
| 863 | (and (eq name (car aux)) (return (car aux-init))))) |
| 864 | (ppss (defstruct-slot-description-ppss))) |
| 865 | (or (and (emptyp code) (null ppss)) |
| 866 | (let* ((number (defstruct-slot-description-number)) |
| 867 | (dsc (assoc number (car kludge)))) |
| 868 | (cond ((null dsc) |
| 869 | (setq dsc (list* number nil (make-empty) 0 0 nil)) |
| 870 | (push dsc (car kludge)))) |
| 871 | (cond ((emptyp code)) |
| 872 | ((eq t (cadr dsc))) |
| 873 | ((null ppss) |
| 874 | (and (emptyp (car (cddr dsc))) |
| 875 | (setf (car (cddr dsc)) code))) |
| 876 | ((memq name (cadr dsc))) |
| 877 | #-Franz |
| 878 | ((and (numberp ppss) (numberp code)) |
| 879 | (setf (ldb ppss (cadr (cddr dsc))) -1) |
| 880 | (setf (ldb ppss (caddr (cddr dsc))) code)) |
| 881 | (t |
| 882 | (push (cons ppss code) (cdddr (cddr dsc))))))))) |
| 883 | (selectq (defstruct-type-description-cons-flavor) |
| 884 | (:list |
| 885 | (do ((l nil (cons nil l)) |
| 886 | (i (defstruct-description-size) (1- i))) |
| 887 | ((= i 0) (setq inits l))) |
| 888 | (do l (car kludge) (cdr l) (null l) |
| 889 | (setf (nth (caar l) inits) |
| 890 | (defstruct-code-from-dsc (car l))))) |
| 891 | (:alist |
| 892 | (setq inits (car kludge)) |
| 893 | (do l inits (cdr l) (null l) |
| 894 | (rplacd (car l) (defstruct-code-from-dsc (car l))))) |
| 895 | (otherwise |
| 896 | (defstruct-error |
| 897 | "Unknown flavor to constructor macro expander" |
| 898 | (defstruct-description-type)))) |
| 899 | (funcall (defstruct-description-displace) |
| 900 | x (funcall (defstruct-type-description-cons-expander) |
| 901 | inits description (cdr kludge))))) |
| 902 | \f |
| 903 | (defun defstruct-expand-alter-macro (x) |
| 904 | (let* ((description (get-defstruct-description (get (car x) 'defstruct-name))) |
| 905 | (type-description (get (defstruct-description-type) |
| 906 | 'defstruct-type-description)) |
| 907 | (ref-code (defstruct-type-description-ref-expander))) |
| 908 | (or (= 1 (defstruct-type-description-ref-no-args)) |
| 909 | (defstruct-error |
| 910 | "Alterant macros cannot handle this defstruct type" |
| 911 | (defstruct-description-type))) |
| 912 | (do ((l (car (defstruct-parse-setq-style-slots |
| 913 | (cddr x) |
| 914 | (defstruct-description-slot-alist) |
| 915 | nil |
| 916 | x)) |
| 917 | (cdr l)) |
| 918 | (but-first (defstruct-description-but-first)) |
| 919 | (body nil) |
| 920 | (var (gensym)) |
| 921 | (vars nil) |
| 922 | (vals nil)) |
| 923 | ((null l) |
| 924 | (funcall (defstruct-description-displace) |
| 925 | x |
| 926 | `((lambda (,var) |
| 927 | . ,(if (null vars) |
| 928 | body |
| 929 | `(((lambda ,vars . ,body) . ,vals)))) |
| 930 | ,(if but-first |
| 931 | `(,but-first ,(cadr x)) |
| 932 | (cadr x))))) |
| 933 | (let ((ref (funcall ref-code (caar l) description var))) |
| 934 | (and (emptyp (car (cddr (car l)))) |
| 935 | (setf (car (cddr (car l))) ref)) |
| 936 | (let ((code (defstruct-code-from-dsc (car l)))) |
| 937 | (if (null (cdr l)) |
| 938 | (push `(setf ,ref ,code) body) |
| 939 | (let ((sym (gensym))) |
| 940 | (push `(setf ,ref ,sym) body) |
| 941 | (push sym vars) |
| 942 | (push code vals)))))))) |
| 943 | \f |
| 944 | (defmacro defstruct-define-type (type . options) |
| 945 | (do ((options options (cdr options)) |
| 946 | (op) (args) |
| 947 | (type-description (make-defstruct-type-description)) |
| 948 | (cons-expander nil) |
| 949 | (ref-expander nil) |
| 950 | (defstruct-expander nil)) |
| 951 | ((null options) |
| 952 | (or cons-expander |
| 953 | (defstruct-error "No cons option in defstruct-define-type" type)) |
| 954 | (or ref-expander |
| 955 | (defstruct-error "No ref option in defstruct-define-type" type)) |
| 956 | `(progn 'compile |
| 957 | ,cons-expander |
| 958 | ,ref-expander |
| 959 | ,@(and defstruct-expander (list defstruct-expander)) |
| 960 | (defprop ,type ,type-description defstruct-type-description))) |
| 961 | (cond ((atom (setq op (car options))) |
| 962 | (setq args nil)) |
| 963 | (t |
| 964 | (setq args (cdr op)) |
| 965 | (setq op (car op)))) |
| 966 | #Q AGAIN |
| 967 | (selectq op |
| 968 | (:cons |
| 969 | (or (> (length args) 2) |
| 970 | (defstruct-error |
| 971 | "Bad cons option in defstruct-define-type" |
| 972 | (car options) 'in type)) |
| 973 | (let ((n (length (car args))) |
| 974 | (name (append-symbols type '-defstruct-cons))) |
| 975 | (or (= n 3) |
| 976 | (defstruct-error |
| 977 | "Bad cons option in defstruct-define-type" |
| 978 | (car options) 'in type)) |
| 979 | (setf (defstruct-type-description-cons-flavor) |
| 980 | #-LispM (cadr args) |
| 981 | #+LispM (intern (string (cadr args)) si:pkg-user-package)) |
| 982 | (setf (defstruct-type-description-cons-expander) name) |
| 983 | (setq cons-expander `(defun ,name ,(car args) |
| 984 | . ,(cddr args))))) |
| 985 | (:ref |
| 986 | (or (> (length args) 1) |
| 987 | (defstruct-error |
| 988 | "Bad ref option in defstruct-define-type" |
| 989 | (car options) 'in type)) |
| 990 | (let ((n (length (car args))) |
| 991 | (name (append-symbols type '-defstruct-ref))) |
| 992 | (or (> n 2) |
| 993 | (defstruct-error |
| 994 | "Bad ref option in defstruct-define-type" |
| 995 | (car options) 'in type)) |
| 996 | (setf (defstruct-type-description-ref-no-args) (- n 2)) |
| 997 | (setf (defstruct-type-description-ref-expander) name) |
| 998 | (setq ref-expander `(defun ,name ,(car args) |
| 999 | . ,(cdr args))))) |
| 1000 | (:overhead |
| 1001 | (setf (defstruct-type-description-overhead) |
| 1002 | (if (null args) |
| 1003 | (defstruct-error |
| 1004 | "Bad option to defstruct-define-type" |
| 1005 | (car options) 'in type) |
| 1006 | (car args)))) |
| 1007 | (:named |
| 1008 | (setf (defstruct-type-description-named-type) |
| 1009 | (if (null args) |
| 1010 | type |
| 1011 | (car args)))) |
| 1012 | (:keywords |
| 1013 | (setf (defstruct-type-description-cons-keywords) args)) |
| 1014 | (:defstruct |
| 1015 | (or (> (length args) 1) |
| 1016 | (defstruct-error |
| 1017 | "Bad defstruct option in defstruct-define-type" |
| 1018 | (car options) 'in type)) |
| 1019 | (let ((name (append-symbols type '-defstruct-expand))) |
| 1020 | (setf (defstruct-type-description-defstruct-expander) name) |
| 1021 | (setq defstruct-expander `(defun ,name . ,args)))) |
| 1022 | (otherwise |
| 1023 | #Q (multiple-value-bind (new foundp) |
| 1024 | (intern-soft op si:pkg-user-package) |
| 1025 | (or (not foundp) |
| 1026 | (eq op new) |
| 1027 | (progn (setq op new) (go AGAIN)))) |
| 1028 | (defstruct-error |
| 1029 | "Unknown option to defstruct-define-type" |
| 1030 | (car options) 'in type))))) |
| 1031 | \f |
| 1032 | #Q |
| 1033 | (defprop :make-array t :defstruct-option) |
| 1034 | |
| 1035 | (defstruct-define-type :array |
| 1036 | #Q (:named :named-array) |
| 1037 | #Q (:keywords :make-array) |
| 1038 | (:cons |
| 1039 | (arg description etc) :alist |
| 1040 | #M etc ;ignored in MacLisp |
| 1041 | #F etc ;ignored in MacLisp |
| 1042 | #Q (lispm-array-for-defstruct arg #'(lambda (v a i) `(aset ,v ,a ,i)) |
| 1043 | description etc nil nil nil 1) |
| 1044 | #M (maclisp-array-for-defstruct arg description 't) |
| 1045 | #F (maclisp-array-for-defstruct arg description 't)) |
| 1046 | (:ref |
| 1047 | (n description arg) |
| 1048 | description ;ignored |
| 1049 | #M `(arraycall t ,arg ,n) |
| 1050 | #F `(arraycall t ,arg ,n) |
| 1051 | #Q `(aref ,arg ,n))) |
| 1052 | |
| 1053 | #Q |
| 1054 | (defstruct-define-type :named-array |
| 1055 | (:keywords :make-array) |
| 1056 | :named (:overhead 1) |
| 1057 | (:cons |
| 1058 | (arg description etc) :alist |
| 1059 | (lispm-array-for-defstruct arg #'(lambda (v a i) `(aset ,v ,a ,(1+ i))) |
| 1060 | description etc nil t nil 1)) |
| 1061 | (:ref (n description arg) |
| 1062 | description ;ignored |
| 1063 | `(aref ,arg ,(1+ n)))) |
| 1064 | |
| 1065 | (defstruct-define-type :fixnum-array |
| 1066 | #Q (:keywords :make-array) |
| 1067 | (:cons |
| 1068 | (arg description etc) :alist |
| 1069 | #M etc ;ignored in MacLisp |
| 1070 | #F etc ;ignored in MacLisp |
| 1071 | #Q (lispm-array-for-defstruct arg #'(lambda (v a i) `(aset ,v ,a ,i)) |
| 1072 | description etc 'art-32b nil nil 1) |
| 1073 | #M (maclisp-array-for-defstruct arg description 'fixnum) |
| 1074 | #F (maclisp-array-for-defstruct arg description 'fixnum)) |
| 1075 | (:ref |
| 1076 | (n description arg) |
| 1077 | description ;ignored |
| 1078 | #M `(arraycall fixnum ,arg ,n) |
| 1079 | #F `(arraycall fixnum ,arg ,n) |
| 1080 | #Q `(aref ,arg ,n))) |
| 1081 | |
| 1082 | (defstruct-define-type :flonum-array |
| 1083 | #Q (:keywords :make-array) |
| 1084 | (:cons |
| 1085 | (arg description etc) :alist |
| 1086 | #M etc ;ignored in MacLisp |
| 1087 | #F etc ;ignored in MacLisp |
| 1088 | #Q (lispm-array-for-defstruct arg #'(lambda (v a i) `(aset ,v ,a ,i)) |
| 1089 | description etc 'art-float nil nil 1) |
| 1090 | #M (maclisp-array-for-defstruct arg description 'flonum) |
| 1091 | #F (maclisp-array-for-defstruct arg description 'flonum)) |
| 1092 | (:ref |
| 1093 | (n description arg) |
| 1094 | description ;ignored |
| 1095 | #M `(arraycall flonum ,arg ,n) |
| 1096 | #F `(arraycall flonum ,arg ,n) |
| 1097 | #Q `(aref ,arg ,n))) |
| 1098 | |
| 1099 | #M |
| 1100 | (defstruct-define-type :un-gc-array |
| 1101 | (:cons |
| 1102 | (arg description etc) :alist |
| 1103 | etc ;ignored |
| 1104 | (maclisp-array-for-defstruct arg description 'nil)) |
| 1105 | (:ref |
| 1106 | (n description arg) |
| 1107 | description ;ignored |
| 1108 | `(arraycall nil ,arg ,n))) |
| 1109 | |
| 1110 | #Q |
| 1111 | (defstruct-define-type :array-leader |
| 1112 | (:named :named-array-leader) |
| 1113 | (:keywords :make-array) |
| 1114 | (:cons |
| 1115 | (arg description etc) :alist |
| 1116 | (lispm-array-for-defstruct arg #'(lambda (v a i) |
| 1117 | `(store-array-leader ,v ,a ,i)) |
| 1118 | description etc nil nil t 1)) |
| 1119 | (:ref |
| 1120 | (n description arg) |
| 1121 | description ;ignored |
| 1122 | `(array-leader ,arg ,n))) |
| 1123 | |
| 1124 | #Q |
| 1125 | (defstruct-define-type :named-array-leader |
| 1126 | (:keywords :make-array) |
| 1127 | :named (:overhead 1) |
| 1128 | (:cons |
| 1129 | (arg description etc) :alist |
| 1130 | (lispm-array-for-defstruct |
| 1131 | arg |
| 1132 | #'(lambda (v a i) |
| 1133 | `(store-array-leader ,v ,a ,(if (zerop i) |
| 1134 | 0 |
| 1135 | (1+ i)))) |
| 1136 | description etc nil t t 1)) |
| 1137 | (:ref |
| 1138 | (n description arg) |
| 1139 | description ;ignored |
| 1140 | (if (zerop n) |
| 1141 | `(array-leader ,arg 0) |
| 1142 | `(array-leader ,arg ,(1+ n))))) |
| 1143 | |
| 1144 | #Q |
| 1145 | (defprop :times t :defstruct-option) |
| 1146 | |
| 1147 | #Q |
| 1148 | (defstruct-define-type :grouped-array |
| 1149 | (:keywords :make-array :times) |
| 1150 | (:cons |
| 1151 | (arg description etc) :alist |
| 1152 | (lispm-array-for-defstruct |
| 1153 | arg |
| 1154 | #'(lambda (v a i) `(aset ,v ,a ,i)) |
| 1155 | description etc nil nil nil |
| 1156 | (or (cdr (or (assq ':times etc) |
| 1157 | (assq ':times (defstruct-description-property-alist)))) |
| 1158 | 1))) |
| 1159 | (:ref |
| 1160 | (n description index arg) |
| 1161 | description ;ignored |
| 1162 | (cond ((numberp index) |
| 1163 | `(aref ,arg ,(+ n index))) |
| 1164 | ((zerop n) |
| 1165 | `(aref ,arg ,index)) |
| 1166 | (t `(aref ,arg (+ ,n ,index)))))) |
| 1167 | \f |
| 1168 | #Q |
| 1169 | (defun lispm-array-for-defstruct (arg cons-init description etc type named-p leader-p times) |
| 1170 | (let ((p (cons nil nil)) |
| 1171 | (no-op 'nil)) |
| 1172 | (defstruct-grok-make-array-args |
| 1173 | (cdr (assq ':make-array (defstruct-description-property-alist))) |
| 1174 | p) |
| 1175 | (defstruct-grok-make-array-args |
| 1176 | (cdr (assq ':make-array etc)) |
| 1177 | p) |
| 1178 | (and type (putprop p type ':type)) |
| 1179 | (and named-p (putprop p `',(defstruct-description-name) ':named-structure-symbol)) |
| 1180 | (putprop p |
| 1181 | (let ((size (if named-p |
| 1182 | (1+ (defstruct-description-size)) |
| 1183 | (defstruct-description-size)))) |
| 1184 | (if (numberp times) |
| 1185 | (* size times) |
| 1186 | `(* ,size ,times))) |
| 1187 | (if leader-p ':leader-length ':dimensions)) |
| 1188 | (or leader-p |
| 1189 | (let ((type (get p ':type))) |
| 1190 | (or (atom type) |
| 1191 | (not (eq (car type) 'quote)) |
| 1192 | (setq type (cadr type))) |
| 1193 | (caseq type |
| 1194 | ((nil art-q art-q-list)) |
| 1195 | ((art-32b art-16b art-8b art-4b art-2b art-1b art-string) (setq no-op '0)) |
| 1196 | ((art-float) (setq no-op '0.0)) |
| 1197 | (t (setq no-op (make-empty)))))) |
| 1198 | (do ((creator |
| 1199 | (let ((dims (remprop p ':dimensions))) |
| 1200 | (do l (cdr p) (cddr l) (null l) |
| 1201 | (rplaca l `',(car l))) |
| 1202 | `(make-array ,(if (null dims) 0 (car dims)) ,@(cdr p)))) |
| 1203 | (var (gensym)) |
| 1204 | (set-ups nil (if (equal (cdar l) no-op) |
| 1205 | set-ups |
| 1206 | (cons (funcall cons-init (cdar l) var (caar l)) |
| 1207 | set-ups))) |
| 1208 | (l arg (cdr l))) |
| 1209 | ((null l) |
| 1210 | (if set-ups |
| 1211 | `((lambda (,var) |
| 1212 | ,@(nreverse set-ups) |
| 1213 | ,var) |
| 1214 | ,creator) |
| 1215 | creator))))) |
| 1216 | |
| 1217 | #Q |
| 1218 | (defun defstruct-grok-make-array-args (args p) |
| 1219 | (let ((nargs (length args))) |
| 1220 | (if (and (not (> nargs 7)) |
| 1221 | (or (oddp nargs) |
| 1222 | (do ((l args (cddr l))) |
| 1223 | ((null l) nil) |
| 1224 | (or (memq (car l) '(:area :type :displaced-to :leader-list |
| 1225 | :leader-length :displaced-index-offset |
| 1226 | :named-structure-symbol :dimensions |
| 1227 | :length)) |
| 1228 | (return t))))) |
| 1229 | (do ((l args (cdr l)) |
| 1230 | (keylist '(:area :type :dimensions :displaced-to :old-leader-length-or-list |
| 1231 | :displaced-index-offset :named-structure-symbol) |
| 1232 | (cdr keylist))) |
| 1233 | ((null l) |
| 1234 | (and (boundp 'compiler:compiler-warnings-context) |
| 1235 | (boundp 'compiler:last-error-function) |
| 1236 | (not (null compiler:compiler-warnings-context)) |
| 1237 | (compiler:barf args '|-- old style :MAKE-ARRAY constructor keyword argument| |
| 1238 | 'compiler:warn)) |
| 1239 | p) |
| 1240 | (putprop p (car l) (car keylist))) |
| 1241 | (do ((l args (cddr l))) |
| 1242 | ((null l) p) |
| 1243 | (if (or (null (cdr l)) |
| 1244 | (not (memq (car l) '(:area :type :displaced-to :leader-list |
| 1245 | :leader-length :displaced-index-offset |
| 1246 | :named-structure-symbol :dimensions |
| 1247 | :length)))) |
| 1248 | (defstruct-error |
| 1249 | "defstruct can't grok these make-array arguments" |
| 1250 | args)) |
| 1251 | (putprop p |
| 1252 | (cadr l) |
| 1253 | (if (eq (car l) ':length) |
| 1254 | ':dimensions |
| 1255 | (car l))))))) |
| 1256 | |
| 1257 | #+(or Franz Maclisp) |
| 1258 | (defun maclisp-array-for-defstruct (arg description type) |
| 1259 | (do ((creator `(array nil ,type ,(defstruct-description-size))) |
| 1260 | (var (gensym)) |
| 1261 | (no-op (caseq type |
| 1262 | (fixnum 0) |
| 1263 | (flonum 0.0) |
| 1264 | ((t nil) nil))) |
| 1265 | (set-ups nil (if (equal (cdar l) no-op) |
| 1266 | set-ups |
| 1267 | (cons `(store (arraycall ,type ,var ,(caar l)) |
| 1268 | ,(cdar l)) |
| 1269 | set-ups))) |
| 1270 | (l arg (cdr l))) |
| 1271 | ((null l) |
| 1272 | (if set-ups |
| 1273 | `((lambda (,var) |
| 1274 | ,@(nreverse set-ups) |
| 1275 | ,var) |
| 1276 | ,creator) |
| 1277 | creator)))) |
| 1278 | \f |
| 1279 | #+PDP10 |
| 1280 | (defprop :sfa-function t :defstruct-option) |
| 1281 | |
| 1282 | #+PDP10 |
| 1283 | (defprop :sfa-name t :defstruct-option) |
| 1284 | |
| 1285 | #+PDP10 |
| 1286 | (defstruct-define-type :sfa |
| 1287 | (:keywords :sfa-function :sfa-name) |
| 1288 | (:cons |
| 1289 | (arg description etc) :alist |
| 1290 | (do ((creator `(sfa-create ,(or (cdr (or (assq ':sfa-function etc) |
| 1291 | (assq ':sfa-function (defstruct-description-property-alist)))) |
| 1292 | `',(defstruct-description-name)) |
| 1293 | ,(defstruct-description-size) |
| 1294 | ,(or (cdr (or (assq ':sfa-name etc) |
| 1295 | (assq ':sfa-name (defstruct-description-property-alist)))) |
| 1296 | `',(defstruct-description-name)))) |
| 1297 | (l arg (cdr l)) |
| 1298 | (var (gensym)) |
| 1299 | (set-ups nil (if (null (cdar l)) |
| 1300 | set-ups |
| 1301 | (cons `(sfa-store ,var ,(caar l) |
| 1302 | ,(cdar l)) |
| 1303 | set-ups)))) |
| 1304 | ((null l) |
| 1305 | (if set-ups |
| 1306 | `((lambda (,var) |
| 1307 | ,@(nreverse set-ups) |
| 1308 | ,var) |
| 1309 | ,creator) |
| 1310 | creator)))) |
| 1311 | (:ref |
| 1312 | (n description arg) |
| 1313 | description ;ignored |
| 1314 | `(sfa-get ,arg ,n))) |
| 1315 | \f |
| 1316 | #+(or Franz PDP10) |
| 1317 | (defstruct-define-type :hunk |
| 1318 | (:named :named-hunk) |
| 1319 | (:cons |
| 1320 | (arg description etc) :list |
| 1321 | description ;ignored |
| 1322 | etc ;ignored |
| 1323 | (if arg |
| 1324 | #+PDP-10 `(hunk . ,(nconc (cdr arg) (ncons (car arg)))) |
| 1325 | #+Franz `(hunk . ,arg) |
| 1326 | (defstruct-error "No slots in hunk type defstruct"))) |
| 1327 | (:ref |
| 1328 | (n description arg) |
| 1329 | description ;ignored |
| 1330 | `(cxr ,n ,arg))) |
| 1331 | |
| 1332 | #+(or Franz PDP10) |
| 1333 | (defstruct-define-type :named-hunk |
| 1334 | :named (:overhead 1) |
| 1335 | (:cons |
| 1336 | (arg description etc) :list |
| 1337 | etc ;ignored |
| 1338 | (if arg |
| 1339 | #+PDP-10 `(hunk ',(defstruct-description-name) |
| 1340 | . ,(nconc (cdr arg) (ncons (car arg)))) |
| 1341 | #+Franz `(hunk ',(defstruct-description-name) |
| 1342 | . ,arg) |
| 1343 | `(hunk ',(defstruct-description-name) nil))) |
| 1344 | (:ref |
| 1345 | (n description arg) |
| 1346 | description ;ignored |
| 1347 | (cond #+PDP-10 ((= n 0) `(cxr 0 ,arg)) |
| 1348 | (t `(cxr ,(1+ n) ,arg))))) |
| 1349 | |
| 1350 | #+(or Franz PDP10 NIL ) |
| 1351 | (defstruct-define-type :vector |
| 1352 | #+Franz |
| 1353 | (:named :named-vector) |
| 1354 | (:cons |
| 1355 | (arg description etc) :list |
| 1356 | description ;ignored |
| 1357 | etc ;ignored |
| 1358 | `(vector ,@arg)) |
| 1359 | (:ref |
| 1360 | (n description arg) |
| 1361 | description ;ignored |
| 1362 | `(vref ,arg ,n))) |
| 1363 | |
| 1364 | #+Franz |
| 1365 | (defstruct-define-type :named-vector |
| 1366 | :named |
| 1367 | (:cons |
| 1368 | (arg description etc) :list |
| 1369 | description ;ignored |
| 1370 | etc ;ignored |
| 1371 | `(let ((nv (vector ,@arg))) |
| 1372 | (vsetprop nv ',(defstruct-description-name)) |
| 1373 | nv)) |
| 1374 | (:ref |
| 1375 | (n description arg) |
| 1376 | description ;ignored |
| 1377 | `(vref ,arg ,n))) |
| 1378 | \f |
| 1379 | (defstruct-define-type :list |
| 1380 | (:named :named-list) |
| 1381 | (:cons |
| 1382 | (arg description etc) :list |
| 1383 | description ;ignored |
| 1384 | etc ;ignored |
| 1385 | `(list . ,arg)) |
| 1386 | (:ref |
| 1387 | (n description arg) |
| 1388 | description ;ignored |
| 1389 | #+Multics `(,(let ((i (\ n 4))) |
| 1390 | (cond ((= i 0) 'car) |
| 1391 | ((= i 1) 'cadr) |
| 1392 | ((= i 2) 'caddr) |
| 1393 | (t 'cadddr))) |
| 1394 | ,(do ((a arg `(cddddr ,a)) |
| 1395 | (i (// n 4) (1- i))) |
| 1396 | ((= i 0) a))) |
| 1397 | #-Multics `(nth ,n ,arg))) |
| 1398 | |
| 1399 | (defstruct-define-type :named-list |
| 1400 | :named (:overhead 1) |
| 1401 | (:cons |
| 1402 | (arg description etc) :list |
| 1403 | etc ;ignored |
| 1404 | `(list ',(defstruct-description-name) . ,arg)) |
| 1405 | (:ref |
| 1406 | (n description arg) |
| 1407 | description ;ignored |
| 1408 | #+Multics `(,(let ((i (\ (1+ n) 4))) |
| 1409 | (cond ((= i 0) 'car) |
| 1410 | ((= i 1) 'cadr) |
| 1411 | ((= i 2) 'caddr) |
| 1412 | (t 'cadddr))) |
| 1413 | ,(do ((a arg `(cddddr ,a)) |
| 1414 | (i (// (1+ n) 4) (1- i))) |
| 1415 | ((= i 0) a))) |
| 1416 | #-Multics `(nth ,(1+ n) ,arg))) |
| 1417 | \f |
| 1418 | (defstruct-define-type :list* |
| 1419 | (:cons |
| 1420 | (arg description etc) :list |
| 1421 | description ;ignored |
| 1422 | etc ;ignored |
| 1423 | `(list* . ,arg)) |
| 1424 | (:ref |
| 1425 | (n description arg) |
| 1426 | (let ((size (1- (defstruct-description-size)))) |
| 1427 | #+Multics (do ((a arg `(cddddr ,a)) |
| 1428 | (i (// n 4) (1- i))) |
| 1429 | ((= i 0) |
| 1430 | (let* ((i (\ n 4)) |
| 1431 | (a (cond ((= i 0) a) |
| 1432 | ((= i 1) `(cdr ,a)) |
| 1433 | ((= i 2) `(cddr ,a)) |
| 1434 | (t `(cdddr ,a))))) |
| 1435 | (if (< n size) `(car ,a) a)))) |
| 1436 | #-Multics (if (< n size) |
| 1437 | `(nth ,n ,arg) |
| 1438 | `(nthcdr ,n ,arg)))) |
| 1439 | (:defstruct (description) |
| 1440 | (and (defstruct-description-include) |
| 1441 | (defstruct-error |
| 1442 | "Structure of type list* cannot include another" |
| 1443 | (defstruct-description-name))) |
| 1444 | nil)) |
| 1445 | |
| 1446 | (defstruct-define-type :tree |
| 1447 | (:cons |
| 1448 | (arg description etc) :list |
| 1449 | etc ;ignored |
| 1450 | (if (null arg) (defstruct-error |
| 1451 | "defstruct cannot make an empty tree" |
| 1452 | (defstruct-description-name))) |
| 1453 | (make-tree-for-defstruct arg (defstruct-description-size))) |
| 1454 | (:ref |
| 1455 | (n description arg) |
| 1456 | (do ((size (defstruct-description-size)) |
| 1457 | (a arg) |
| 1458 | (tem)) |
| 1459 | (()) |
| 1460 | (cond ((= size 1) (return a)) |
| 1461 | ((< n (setq tem (// size 2))) |
| 1462 | (setq a `(car ,a)) |
| 1463 | (setq size tem)) |
| 1464 | (t (setq a `(cdr ,a)) |
| 1465 | (setq size (- size tem)) |
| 1466 | (setq n (- n tem)))))) |
| 1467 | (:defstruct (description) |
| 1468 | (and (defstruct-description-include) |
| 1469 | (defstruct-error |
| 1470 | "Structure of type tree cannot include another" |
| 1471 | (defstruct-description-name))) |
| 1472 | nil)) |
| 1473 | |
| 1474 | (defun make-tree-for-defstruct (arg size) |
| 1475 | (cond ((= size 1) (car arg)) |
| 1476 | ((= size 2) `(cons ,(car arg) ,(cadr arg))) |
| 1477 | (t (do ((a (cdr arg) (cdr a)) |
| 1478 | (m (// size 2)) |
| 1479 | (n (1- (// size 2)) (1- n))) |
| 1480 | ((zerop n) |
| 1481 | `(cons ,(make-tree-for-defstruct arg m) |
| 1482 | ,(make-tree-for-defstruct a (- size m)))))))) |
| 1483 | |
| 1484 | (defstruct-define-type :fixnum |
| 1485 | (:cons |
| 1486 | (arg description etc) :list |
| 1487 | etc ;ignored |
| 1488 | (and (or (null arg) |
| 1489 | (not (null (cdr arg)))) |
| 1490 | (defstruct-error |
| 1491 | "Structure of type fixnum must have exactly 1 slot to be constructable" |
| 1492 | (defstruct-description-name))) |
| 1493 | (car arg)) |
| 1494 | (:ref |
| 1495 | (n description arg) |
| 1496 | n ;ignored |
| 1497 | description ;ignored |
| 1498 | arg)) |
| 1499 | \f |
| 1500 | #+Multics |
| 1501 | (defprop :external-ptr t :defstruct-option) |
| 1502 | |
| 1503 | #+Multics |
| 1504 | (defstruct-define-type :external |
| 1505 | (:keywords :external-ptr) |
| 1506 | (:cons (arg description etc) :alist |
| 1507 | (let ((ptr (cdr (or (assq ':external-ptr etc) |
| 1508 | (assq ':external-ptr |
| 1509 | (defstruct-description-property-alist)) |
| 1510 | (defstruct-error |
| 1511 | "No pointer given for external array" |
| 1512 | (defstruct-description-name)))))) |
| 1513 | (do ((creator `(array nil external ,ptr ,(defstruct-description-size))) |
| 1514 | (var (gensym)) |
| 1515 | (alist arg (cdr alist)) |
| 1516 | (inits nil (cons `(store (arraycall fixnum ,var ,(caar alist)) |
| 1517 | ,(cdar alist)) |
| 1518 | inits))) |
| 1519 | ((null alist) |
| 1520 | (if (null inits) |
| 1521 | creator |
| 1522 | `((lambda (,var) ,.inits ,var) |
| 1523 | ,creator)))))) |
| 1524 | (:ref (n description arg) |
| 1525 | description ;ignored |
| 1526 | `(arraycall fixnum ,arg ,n))) |
| 1527 | \f |
| 1528 | (defvar *defstruct-examine&deposit-arg*) |
| 1529 | |
| 1530 | (defun defstruct-examine (*defstruct-examine&deposit-arg* |
| 1531 | name slot-name) |
| 1532 | (eval (list (defstruct-slot-description-ref-macro-name |
| 1533 | (defstruct-examine&deposit-find-slot-description |
| 1534 | name slot-name)) |
| 1535 | '*defstruct-examine&deposit-arg*))) |
| 1536 | |
| 1537 | (defvar *defstruct-examine&deposit-val*) |
| 1538 | |
| 1539 | (defun defstruct-deposit (*defstruct-examine&deposit-val* |
| 1540 | *defstruct-examine&deposit-arg* |
| 1541 | name slot-name) |
| 1542 | (eval (list 'setf |
| 1543 | (list (defstruct-slot-description-ref-macro-name |
| 1544 | (defstruct-examine&deposit-find-slot-description |
| 1545 | name slot-name)) |
| 1546 | '*defstruct-examine&deposit-arg*) |
| 1547 | '*defstruct-examine&deposit-val*))) |
| 1548 | |
| 1549 | #Q |
| 1550 | (defun defstruct-get-locative (*defstruct-examine&deposit-arg* |
| 1551 | name slot-name) |
| 1552 | (let ((slot-description (defstruct-examine&deposit-find-slot-description |
| 1553 | name slot-name))) |
| 1554 | (or (null (defstruct-slot-description-ppss)) |
| 1555 | (defstruct-error |
| 1556 | "You cannot get a locative to a byte field" |
| 1557 | slot-name 'in name)) |
| 1558 | (eval (list 'locf |
| 1559 | (list (defstruct-slot-description-ref-macro-name) |
| 1560 | '*defstruct-examine&deposit-arg*))))) |
| 1561 | |
| 1562 | (defun defstruct-examine&deposit-find-slot-description (name slot-name) |
| 1563 | (let ((description (get-defstruct-description name))) |
| 1564 | (let ((slot-description |
| 1565 | (cdr (or (assq slot-name (defstruct-description-slot-alist)) |
| 1566 | (defstruct-error |
| 1567 | "No such slot in this structure" |
| 1568 | slot-name 'in name)))) |
| 1569 | (type-description |
| 1570 | (or (get (defstruct-description-type) 'defstruct-type-description) |
| 1571 | (defstruct-error |
| 1572 | "Undefined defstruct type" |
| 1573 | (defstruct-description-type))))) |
| 1574 | (or (= (defstruct-type-description-ref-no-args) 1) |
| 1575 | (defstruct-error |
| 1576 | "defstruct-examine and defstruct-deposit cannot handle structures of this type" |
| 1577 | (defstruct-description-type))) |
| 1578 | slot-description))) |
| 1579 | \f |
| 1580 | #+PDP10 |
| 1581 | (defprop defstruct |
| 1582 | #.(and (status feature PDP10) |
| 1583 | (caddr (truename infile))) |
| 1584 | version) |
| 1585 | |
| 1586 | (sstatus feature defstruct) |