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    Length: 2712 (0xa98)
    Types: TextFile
    Names: »world.scm.7«

└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
    └─⟦this⟧ »EUUGD11/gnu-31mar87/scheme/scm/world.scm.7« 

TextFile

;;; -*-Scheme-*-
;;;
;;;	Copyright (c) 1984 Massachusetts Institute of Technology
;;;
;;;	This material was developed by the Scheme project at the
;;;	Massachusetts Institute of Technology, Department of
;;;	Electrical Engineering and Computer Science.  Permission to
;;;	copy this software, to redistribute it, and to use it for any
;;;	purpose is granted, subject to the following restrictions and
;;;	understandings.
;;;
;;;	1. Any copy made of this software must include this copyright
;;;	notice in full.
;;;
;;;	2. Users of this software agree to make their best efforts (a)
;;;	to return to the MIT Scheme project any improvements or
;;;	extensions that they make, so that these may be included in
;;;	future releases; and (b) to inform MIT of noteworthy uses of
;;;	this software.
;;;
;;;	3.  All materials developed as a consequence of the use of
;;;	this software shall duly acknowledge such use, in accordance
;;;	with the usual standards of acknowledging credit in academic
;;;	research.
;;;
;;;	4. MIT has made no warrantee or representation that the
;;;	operation of this software will be error-free, and MIT is
;;;	under no obligation to provide any services, by way of
;;;	maintenance, update, or otherwise.
;;;
;;;	5.  In conjunction with products arising from the use of this
;;;	material, there shall be no use of the name of the
;;;	Massachusetts Institute of Technology nor of any adaptation
;;;	thereof in any advertising, promotional, or sales literature
;;;	without prior written consent from MIT in each case.
;;;

;;;; Operations on the World

(declare (usual-integrations))
\f


(define exit
  (let ((primitive (make-primitive-procedure 'EXIT)))
    (named-lambda (exit)
      (close-all-open-files)
      (primitive))))

(define quit
  (let ((primitive (make-primitive-procedure 'HALT)))
    (named-lambda (quit)
      (let ((si (set-interrupt-enables! INTERRUPT-MASK-NONE)))
	(primitive)
	(set-interrupt-enables! si))
      *the-non-printing-object*)))

(define edit quit)

(define save-world
  (let ((dump-band (make-primitive-procedure 'DUMP-BAND)))
    (named-lambda (save-world filename #!optional after-suspend after-restore)
      (suspend-world (lambda (restart)
		       (dump-band restart (canonicalize-filename filename)))
		     (lambda (ie)
		       ((if (unassigned? after-suspend)
			    set-interrupt-enables!
			    after-suspend)
			ie))
		     (lambda (ie)
		       ((if (unassigned? after-restore)
			    set-interrupt-enables!
			    after-restore)
			ie))))))

(define disk-restore
  (let ((load-band (make-primitive-procedure 'LOAD-BAND)))
    (named-lambda (disk-restore filename)
      (close-all-open-files)
      (load-band (canonicalize-filename filename)))))