/usr/share/guile/1.8/ice-9/channel.scm is in guile-1.8-libs 1.8.8+1-6ubuntu2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | ;;; Guile object channel
;; Copyright (C) 2001, 2006 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 2.1 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
;;; Commentary:
;; Now you can use Guile's modules in Emacs Lisp like this:
;;
;; (guile-import current-module)
;; (guile-import module-ref)
;;
;; (setq assq (module-ref (current-module) 'assq))
;; => ("<guile>" %%1%% . "#<primitive-procedure assq>")
;;
;; (guile-use-modules (ice-9 documentation))
;;
;; (object-documentation assq)
;; =>
;; " - primitive: assq key alist
;; - primitive: assv key alist
;; - primitive: assoc key alist
;; Fetches the entry in ALIST that is associated with KEY. To decide
;; whether the argument KEY matches a particular entry in ALIST,
;; `assq' compares keys with `eq?', `assv' uses `eqv?' and `assoc'
;; uses `equal?'. If KEY cannot be found in ALIST (according to
;; whichever equality predicate is in use), then `#f' is returned.
;; These functions return the entire alist entry found (i.e. both the
;; key and the value)."
;;
;; Probably we can use GTK in Emacs Lisp. Can anybody try it?
;;
;; I have also implemented Guile Scheme mode and Scheme Interaction mode.
;; Just put the following lines in your ~/.emacs:
;;
;; (require 'guile-scheme)
;; (setq initial-major-mode 'scheme-interaction-mode)
;;
;; Currently, the following commands are available:
;;
;; M-TAB guile-scheme-complete-symbol
;; M-C-x guile-scheme-eval-define
;; C-x C-e guile-scheme-eval-last-sexp
;; C-c C-b guile-scheme-eval-buffer
;; C-c C-r guile-scheme-eval-region
;; C-c : guile-scheme-eval-expression
;;
;; I'll write more commands soon, or if you want to hack, please take
;; a look at the following files:
;;
;; guile-core/ice-9/channel.scm ;; object channel
;; guile-core/emacs/guile.el ;; object adapter
;; guile-core/emacs/guile-emacs.scm ;; Guile <-> Emacs channels
;; guile-core/emacs/guile-scheme.el ;; Guile Scheme mode
;;
;; As always, there are more than one bugs ;)
;;; Code:
(define-module (ice-9 channel)
:export (make-object-channel
channel-open
channel-print-value
channel-print-token))
;;;
;;; Channel type
;;;
(define channel-type
(make-record-type 'channel '(stdin stdout printer token-module)))
(define make-channel (record-constructor channel-type))
(define (make-object-channel printer)
(make-channel (current-input-port)
(current-output-port)
printer
(make-module)))
(define channel-stdin (record-accessor channel-type 'stdin))
(define channel-stdout (record-accessor channel-type 'stdout))
(define channel-printer (record-accessor channel-type 'printer))
(define channel-token-module (record-accessor channel-type 'token-module))
;;;
;;; Channel
;;;
(define (channel-open ch)
(let ((stdin (channel-stdin ch))
(stdout (channel-stdout ch))
(printer (channel-printer ch))
(token-module (channel-token-module ch)))
(let loop ()
(catch #t
(lambda ()
(channel:prompt stdout)
(let ((cmd (read stdin)))
(if (eof-object? cmd)
(throw 'quit)
(case cmd
((eval)
(module-use! (current-module) token-module)
(printer ch (eval (read stdin) (current-module))))
((destroy)
(let ((token (read stdin)))
(if (module-defined? token-module token)
(module-remove! token-module token)
(channel:error stdout "Invalid token: ~S" token))))
((quit)
(throw 'quit))
(else
(channel:error stdout "Unknown command: ~S" cmd)))))
(loop))
(lambda (key . args)
(case key
((quit) (throw 'quit))
(else
(format stdout "exception = ~S\n"
(list key (apply format #f (cadr args) (caddr args))))
(loop))))))))
(define (channel-print-value ch val)
(format (channel-stdout ch) "value = ~S\n" val))
(define (channel-print-token ch val)
(let* ((token (symbol-append (gensym "%%") '%%))
(pair (cons token (object->string val))))
(format (channel-stdout ch) "token = ~S\n" pair)
(module-define! (channel-token-module ch) token val)))
(define (channel:prompt port)
(display "channel> " port)
(force-output port))
(define (channel:error port msg . args)
(display "ERROR: " port)
(apply format port msg args)
(newline port))
;;;
;;; Guile 1.4 compatibility
;;;
(define guile:eval eval)
(define eval
(if (= (car (procedure-property guile:eval 'arity)) 1)
(lambda (x e) (guile:eval x))
guile:eval))
(define object->string
(if (defined? 'object->string)
object->string
(lambda (x) (format #f "~S" x))))
;;; channel.scm ends here
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