+++ /dev/null
-;;;; Copyright (C) 1996, 1997 Mikael Djurfeldt
-;;;;
-;;;; This program is free software; you can redistribute it and/or modify
-;;;; it under the terms of the GNU General Public License as published by
-;;;; the Free Software Foundation; either version 2, or (at your option)
-;;;; any later version.
-;;;;
-;;;; This program is distributed in the hope that it will be useful,
-;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;;; GNU General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU General Public License
-;;;; along with this software; see the file COPYING. If not, write to
-;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
-;;;; Boston, MA 02111-1307 USA
-;;;;
-;;;; The author can be reached at djurfeldt@nada.kth.se
-;;;; Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN
-;;;;
-\f
-
-;;; *******************************
-;;; * Experimental hack *
-;;; * Shouldn't go into snapshots *
-;;; * Don't distribute! *
-;;; *******************************
-
-;;; {Session support for Emacs}
-;;;
-
-(define-module (ice-9 emacs)
- :use-module (ice-9 threads)
- :use-module (ice-9 nonblocking))
-
-(define emacs-escape-character #\sub)
-
-(define emacs-output-port (current-output-port))
-
-(define (make-emacs-command char)
- (let ((cmd (list->string (list emacs-escape-character char))))
- (lambda ()
- (display cmd emacs-output-port))))
-
-(define enter-input-wait (make-emacs-command #\s))
-(define exit-input-wait (make-emacs-command #\f))
-(define enter-read-character #\r)
-(define sending-error (make-emacs-command #\F))
-(define sending-backtrace (make-emacs-command #\B))
-(define sending-result (make-emacs-command #\x))
-(define end-of-text (make-emacs-command #\.))
-
-;; {Error handling}
-;;
-
-(add-hook! before-backtrace-hook sending-backtrace)
-(add-hook! after-backtrace-hook end-of-text)
-(add-hook! before-error-hook sending-error)
-(add-hook! after-error-hook end-of-text)
-
-;; {Repl}
-;;
-
-(set-current-error-port emacs-output-port)
-
-(add-hook! before-read-hook
- (lambda ()
- (enter-input-wait)
- (force-output emacs-output-port)))
-
-(add-hook! after-read-hook
- (lambda ()
- (exit-input-wait)
- (force-output emacs-output-port)))
-
-;;; {Misc.}
-
-(define (make-emacs-load-port orig-port)
- (letrec ((read-char-fn (lambda args
- (let ((c (read-char orig-port)))
- (if (eq? c #\soh)
- (throw 'end-of-chunk)
- c)))))
-
- (make-soft-port
- (vector #f #f #f
- read-char-fn
- (lambda () (close-port orig-port)))
- "r")))
-
-(set! repl-input-port (make-emacs-load-port (current-input-port)))
-(set-current-input-port repl-input-port)
-
-(define (emacs-eval-request form)
- (let ((port (current-output-port)))
- (sending-result port)
- (write (eval form) port)
- (end-of-text port)
- (force-output port)))
-
-(define load-acknowledge (make-emacs-command #\l))
-
-(define load-port (current-input-port))
-
-(define (flush-line port)
- (let loop ((c (read-char port)))
- (if (not (eq? c #\nl))
- (loop (read-char port)))))
-
-(define whitespace-chars (list #\space #\tab #\nl #\np))
-
-(define (flush-whitespace port)
- (catch 'end-of-chunk
- (lambda ()
- (let loop ((c (read-char port)))
- (cond ((eq? c the-eof-object)
- (error "End of file while recieving Emacs data"))
- ((memq c whitespace-chars) (loop (read-char port)))
- ((eq? c #\;) (flush-line port) (loop (read-char port)))
- (else (unread-char c port))))
- #f)
- (lambda args
- (read-char port) ; Read final newline
- #t)))
-
-(define (emacs-load filename linum)
- (set-port-filename! %%load-port filename)
- (set-port-line! %%load-port linum)
- (set-port-column! %%load-port 0)
- (lazy-catch #t
- (lambda ()
- (let loop ((endp (flush-whitespace %%load-port)))
- (if (not endp)
- (begin
- (start-stack read-and-eval!
- (read-and-eval! %%load-port))
- (loop (flush-whitespace %%load-port)))
- (begin
- (load-acknowledge))))
- )
- (lambda (key . args)
- (cond ((eq? key 'end-of-chunk)
- (set! the-last-stack #f)
- (set! stack-saved? #t)
- (scm-error 'misc-error
- #f
- "Incomplete expression"
- '()
- '()))
- ((eq? key 'exit))
- (else
- (save-stack 2)
- (catch 'end-of-chunk
- (lambda ()
- (let loop ()
- (read-char %%load-port)
- (loop)))
- (lambda args
- #f))
- (apply throw key args))))))
-
-;;; A fix to get the emacs interface to work together with the module system.
-;;;
-(variable-set! (builtin-variable '%%load-port) load-port)
-(variable-set! (builtin-variable '%%emacs-load) emacs-load)
HCoop / bpt / guile.git / blobdiff