+++ /dev/null
-;;;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2006, 2009, 2010 Free Software Foundation, Inc.
-;;;;
-;;;; This library is free software; you can redistribute it and/or
-;;;; modify it under the terms of the GNU Lesser General Public
-;;;; License as published by the Free Software Foundation; either
-;;;; version 3 of the License, or (at your option) any later version.
-;;;;
-;;;; This library 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
-;;;; Lesser General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU Lesser General Public
-;;;; License along with this library; if not, write to the Free Software
-;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-;;;;
-;;;; The author can be reached at djurfeldt@nada.kth.se
-;;;; Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN
-;;;; (I didn't write this!)
-;;;;
-\f
-
-;;; *********************************************************************
-;;; * This is the Guile side of the Emacs interface *
-;;; * Experimental hACK---the real version will be coming soon (almost) *
-;;; *********************************************************************
-
-;;; {Session support for Emacs}
-;;;
-
-(define-module (ice-9 emacs)
- :use-module (ice-9 threads)
- :use-module (ice-9 session)
- :use-module (ice-9 save-stack)
- :no-backtrace)
-
-(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 #\.))
-(define no-stack (make-emacs-command #\S))
-(define no-source (make-emacs-command #\R))
-
-;; {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-current-input-port (make-emacs-load-port (current-input-port)))
-
-(define (result-to-emacs exp)
- (sending-result)
- (write exp emacs-output-port)
- (end-of-text)
- (force-output emacs-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 receiving 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 colnum module interactivep)
- (define (read-and-eval! port)
- (let ((x (read port)))
- (if (eof-object? x)
- (throw 'end-of-file)
- (primitive-eval x))))
- (set-port-filename! %%load-port filename)
- (set-port-line! %%load-port linum)
- (set-port-column! %%load-port colnum)
- (lazy-catch #t
- (lambda ()
- (let loop ((endp (flush-whitespace %%load-port)))
- (if (not endp)
- (begin
- (save-module-excursion
- (lambda ()
- (if module
- (set-current-module (resolve-module module #f)))
- (let ((result
- (start-stack read-and-eval!
- (read-and-eval! %%load-port))))
- (if interactivep
- (result-to-emacs result)))))
- (loop (flush-whitespace %%load-port)))
- (begin
- (load-acknowledge)))
- (set-port-filename! %%load-port #f))) ;reset port filename
- (lambda (key . args)
- (set-port-filename! %%load-port #f)
- (cond ((eq? key 'end-of-chunk)
- (fluid-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))))))
-
-(define (emacs-eval-request form)
- (result-to-emacs (eval form (interaction-environment))))
-
-;;*fixme* Not necessary to use flags no-stack and no-source
-(define (get-frame-source frame)
- (if (or (not (fluid-ref the-last-stack))
- (>= frame (stack-length (fluid-ref the-last-stack))))
- (begin
- (no-stack)
- #f)
- (let* ((frame (stack-ref (fluid-ref the-last-stack)
- (frame-number->index frame)))
- (source (frame-source frame)))
- (or source
- (begin (no-source)
- #f)))))
-
-(define (emacs-select-frame frame)
- (let ((source (get-frame-source frame)))
- (if source
- (let ((fname (source-property source 'filename))
- (line (source-property source 'line))
- (column (source-property source 'column)))
- (if (and fname line column)
- (list fname line column)
- (begin (no-source)
- '())))
- '())))
-
-(define (object->string x . method)
- (with-output-to-string
- (lambda ()
- ((if (null? method)
- write
- (car method))
- x))))
-
-(define (format template . rest)
- (let loop ((chars (string->list template))
- (result '())
- (rest rest))
- (cond ((null? chars) (list->string (reverse result)))
- ((char=? (car chars) #\%)
- (loop (cddr chars)
- (append (reverse
- (string->list
- (case (cadr chars)
- ((#\S) (object->string (car rest)))
- ((#\s) (object->string (car rest) display)))))
- result)
- (cdr rest)))
- (else (loop (cdr chars) (cons (car chars) result) rest)))))
-
-(define (error-args->string args)
- (let ((msg (apply format (caddr args) (cadddr args))))
- (if (symbol? (cadr args))
- (string-append (symbol->string (cadr args))
- ": "
- msg)
- msg)))
-
-;; FIXME: no longer working due to removal of local-eval
-(define (emacs-frame-eval frame form)
- (let ((source (get-frame-source frame)))
- (if source
- (catch #t
- (lambda ()
- (list 'result
- (object->string
- (local-eval (with-input-from-string form read)
- (memoized-environment source)))))
- (lambda args
- (list (car args)
- (error-args->string args))))
- (begin
- (no-source)
- '()))))
-
-(define (emacs-symdoc symbol)
- (if (or (not (module-bound? (current-module) symbol))
- (not (procedure? (eval symbol (interaction-environment)))))
- 'nil
- (procedure-documentation (eval symbol (interaction-environment)))))
-
-;;; A fix to get the emacs interface to work together with the module system.
-;;;
-(for-each (lambda (name value)
- (module-define! the-root-module name value))
- '(%%load-port
- %%emacs-load
- %%emacs-eval-request
- %%emacs-select-frame
- %%emacs-frame-eval
- %%emacs-symdoc
- %%apropos-internal)
- (list load-port
- emacs-load
- emacs-eval-request
- emacs-select-frame
- emacs-frame-eval
- emacs-symdoc
- apropos-internal))
HCoop / bpt / guile.git / commitdiff