184 lines
5.6 KiB
Scheme
184 lines
5.6 KiB
Scheme
;;;
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;;; Copyright (c) 1985 Massachusetts Institute of Technology
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;;;
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;;; This material was developed by the Scheme project at the
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;;; Massachusetts Institute of Technology, Department of
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;;; Electrical Engineering and Computer Science. Permission to
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;;; copy this software, to redistribute it, and to use it for any
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;;; purpose is granted, subject to the following restrictions and
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;;; understandings.
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;;;
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;;; 1. Any copy made of this software must include this copyright
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;;; notice in full.
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;;;
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;;; 2. Users of this software agree to make their best efforts (a)
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;;; to return to the MIT Scheme project any improvements or
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;;; extensions that they make, so that these may be included in
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;;; future releases; and (b) to inform MIT of noteworthy uses of
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;;; this software.
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;;;
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;;; 3. All materials developed as a consequence of the use of
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;;; this software shall duly acknowledge such use, in accordance
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;;; with the usual standards of acknowledging credit in academic
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;;; research.
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;;;
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;;; 4. MIT has made no warrantee or representation that the
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;;; operation of this software will be error-free, and MIT is
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;;; under no obligation to provide any services, by way of
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;;; maintenance, update, or otherwise.
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;;;
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;;; 5. In conjunction with products arising from the use of this
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;;; material, there shall be no use of the name of the
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;;; Massachusetts Institute of Technology nor of any adaptation
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;;; thereof in any advertising, promotional, or sales literature
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;;; without prior written consent from MIT in each case.
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;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;
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;;; Modified by Texas Instruments Inc 8/15/85
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;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;; Current State
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;;;; Windows
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(begin
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(define-integrable current-window
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(lambda ()
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(current-buffer-window)))
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;;;; Buffers
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(define-integrable buffer-list
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(lambda ()
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(bufferset-buffer-list (current-bufferset))))
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(define-integrable buffer-names
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(lambda ()
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(bufferset-names (current-bufferset))))
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(define-integrable current-buffer
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(lambda ()
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(window-buffer (current-window))))
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(define-integrable find-buffer
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(lambda (name)
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(bufferset-find-buffer (current-bufferset) name)))
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(define-integrable create-buffer
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(lambda (name)
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(bufferset-create-buffer (current-bufferset) name)))
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(define-integrable find-or-create-buffer
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(lambda (name)
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(bufferset-find-or-create-buffer (current-bufferset) name)))
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(define-integrable rename-buffer
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(lambda (buffer new-name)
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(bufferset-rename-buffer (current-bufferset) buffer new-name)))
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(define-integrable current-point
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(lambda ()
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(window-point (current-window))))
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(define-integrable set-current-point!
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(lambda (mark)
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(set-window-point! (current-window) mark)))
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(define-integrable current-mark
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(lambda ()
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(buffer-mark (current-buffer))))
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(define-integrable set-current-mark!
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(lambda (mark)
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(set-buffer-mark! (current-buffer) mark)))
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(define-integrable push-current-mark!
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(lambda (mark)
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(push-buffer-mark! (current-buffer) mark)))
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(define-integrable pop-current-mark!
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(lambda ()
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(pop-buffer-mark! (current-buffer))))
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(define-integrable current-region
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(lambda ()
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(make-region (current-point) (current-mark))))
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)
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;;; These have been commented out as are not currently used. However,
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;;; these are useful routines and should not be deleted from this file.
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;;;(define (kill-buffer buffer)
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;;; (let ((new-buffer (other-buffer buffer))
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;;; (current? (eq? buffer (current-buffer)))
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;;; (windows (buffer-windows buffer)))
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;;; (if (and (not new-buffer) (not (null? windows)))
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;;; (error "Buffer to be killed has no replacement" buffer))
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;;; (bufferset-kill-buffer! (current-bufferset) buffer)
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;;; (if current? (select-buffer new-buffer))
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;;; (mapc (lambda (window) (set-window-buffer! window new-buffer))
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;;; windows)))
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;;;(define (with-current-window new-window thunk)
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;;; (define old-window)
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;;; (dynamic-wind (lambda ()
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;;; (set! old-window (current-window))
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;;; (select-window (set! new-window)))
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;;; thunk
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;;; (lambda ()
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;;; (set! new-window (current-window))
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;;; (select-window (set! old-window)))))
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;;;
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;;;(define (with-selected-buffer buffer thunk)
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;;; (define old-buffer)
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;;; (dynamic-wind (lambda ()
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;;; (set! old-buffer (current-buffer))
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;;; (select-buffer-no-record buffer))
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;;; thunk
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;;; (lambda ()
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;;; (set! buffer (current-buffer))
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;;; (select-buffer-no-record old-buffer))))
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;;;; Point and Mark
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;;;(define (with-current-point new-point thunk)
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;;; (define old-point)
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;;; (dynamic-wind (lambda ()
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;;; (set! old-point (current-point))
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;;; (set-current-point! new-point))
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;;; thunk
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;;; (lambda ()
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;;; (set! new-point (current-point))
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;;; (set-current-point! old-point))))
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(define (buffer-mark buffer)
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(let ((ring (buffer-mark-ring buffer)))
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(if (ring-empty? ring) (editor-error))
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(ring-ref ring 0)))
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(define (set-buffer-mark! buffer mark)
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(ring-set! (buffer-mark-ring buffer)
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0
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(mark-right-inserting mark)))
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(define (push-buffer-mark! buffer mark)
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(ring-push! (buffer-mark-ring buffer)
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(mark-right-inserting mark)))
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(define (pop-buffer-mark! buffer)
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(ring-pop! (buffer-mark-ring buffer)))
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(define (set-current-region! region)
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(set-current-point! (region-start region))
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(push-current-mark! (region-end region)))
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(define (set-current-region-reversed! region)
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(push-current-mark! (region-start region))
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(set-current-point! (region-end region)))
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