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Text File | 1992-11-25 | 14.9 KB | 274 lines | [TEXT/gamI] |
- ;* Copyright 1992 Digital Equipment Corporation
- ;* All Rights Reserved
- ;*
- ;* Permission to use, copy, and modify this software and its documentation is
- ;* hereby granted only under the following terms and conditions. Both the
- ;* above copyright notice and this permission notice must appear in all copies
- ;* of the software, derivative works or modified versions, and any portions
- ;* thereof, and both notices must appear in supporting documentation.
- ;*
- ;* Users of this software agree to the terms and conditions set forth herein,
- ;* and hereby grant back to Digital a non-exclusive, unrestricted, royalty-free
- ;* right and license under any changes, enhancements or extensions made to the
- ;* core functions of the software, including but not limited to those affording
- ;* compatibility with other hardware or software environments, but excluding
- ;* applications which incorporate this software. Users further agree to use
- ;* their best efforts to return to Digital any such changes, enhancements or
- ;* extensions that they make and inform Digital of noteworthy uses of this
- ;* software. Correspondence should be provided to Digital at:
- ;*
- ;* Director, Cambridge Research Lab
- ;* Digital Equipment Corp
- ;* One Kendall Square, Bldg 700
- ;* Cambridge MA 02139
- ;*
- ;* This software may be distributed (but not offered for sale or transferred
- ;* for compensation) to third parties, provided such third parties agree to
- ;* abide by the terms and conditions of this notice.
- ;*
- ;* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- ;* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- ;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- ;* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- ;* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- ;* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- ;* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- ;* SOFTWARE.
-
- ; $Id: runtime-collections-list.scm,v 1.17 1992/08/31 05:00:58 birkholz Exp $
-
- ;;;; This file contains all the specializations for list, pair, and
- ;;;; empty-list type.
-
-
- (add-method dylan:binary=
- (dylan::function->method
- two-lists
- (lambda (list-1 list-2)
- (let ((size-1 (dylan-call dylan:size list-1))
- (size-2 (dylan-call dylan:size list-2)))
- (if (not (= size-1 size-2))
- #F
- (do ((state-1 (dylan-call dylan:initial-state list-1)
- (dylan-call dylan:next-state list-1 state-1))
- (state-2 (dylan-call dylan:initial-state list-2)
- (dylan-call dylan:next-state list-2 state-2)))
- ((or (or (not state-1) (not state-2))
- (not (dylan-call dylan:id?
- (dylan-call dylan:current-element
- list-1 state-1)
- (dylan-call dylan:current-element
- list-2 state-2))))
- (if (or state-1 state-2) #F #T))))))))
-
- (add-method dylan:as
- (dylan::function->method
- (make-param-list `((CLASS ,(dylan::make-singleton <list>))
- (COLLECTION ,<collection>)) #F #F #F)
- (lambda (class collection)
- class
- (if (dylan-call dylan:instance? collection <list>)
- collection
- (let loop ((state (dylan-call dylan:initial-state collection))
- (result '()))
- (if state
- (loop (dylan-call dylan:next-state collection state)
- (cons (dylan-call dylan:current-element collection state)
- result))
- (reverse result)))))))
-
-
- (add-method dylan:as
- (dylan::function->method
- (make-param-list `((CLASS ,(dylan::make-singleton <pair>))
- (COLLECTION ,<collection>)) #F #F #F)
- (lambda (class collection)
- class
- (if (dylan-call dylan:instance? collection <pair>)
- collection
- (let loop ((state (dylan-call dylan:initial-state collection))
- (result '()))
- (if state
- (loop (dylan-call dylan:next-state collection state)
- (cons (dylan-call dylan:current-element collection state)
- result))
- (reverse result)))))))
-
-
- ;;;
- ;;; LIST SPECIALIZED MAKE
- ;;; supports size: and fill:
- ;;;
- (add-method
- dylan:make
- (dylan::dylan-callable->method
- (make-param-list `((LIST ,(dylan::make-singleton <list>)))
- #F #F '(size: fill:))
- (lambda (multiple-values next-method class . rest)
- multiple-values class ; Not used
- (dylan::keyword-validate next-method rest '(size: fill:))
- (let* ((size (dylan::find-keyword rest 'size: (lambda () 0)))
- (have-fill? #T)
- (fill (dylan::find-keyword rest 'fill:
- (lambda () (set! have-fill? #F) #F))))
- (if (or (not (integer? size)) (negative? size))
-