[bpt/guile.git] / ice-9 / history.scm

;;;; 	Copyright (C) 2000 Free Software Foundation, Inc.
;;;; 
;;;; 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
;;;; 
\f
;;;; A simple value history support

(define-module (ice-9 history))

(process-define-module '((value-history)))

(define (use-value-history x)
  (module-use! (current-module)
	       (resolve-module '(value-history))))

(define save-value-history
  (let ((count 0)
	(history (resolve-module '(value-history))))
    (lambda (v)
      (if (not (unspecified? v))
	  (let* ((c (1+ count))
		 (s (string->symbol (simple-format #f "$~A" c))))
	    (simple-format #t "~A = " s)
	    (module-define! history s v)
	    (set! count c))))))

(add-hook! before-eval-hook use-value-history)
(add-hook! before-print-hook save-value-history)
Commit	Line	Data
870777d7 KN	1	;;;; Copyright (C) 2000 Free Software Foundation, Inc.
	2	;;;;
	3	;;;; This program is free software; you can redistribute it and/or modify
	4	;;;; it under the terms of the GNU General Public License as published by
	5	;;;; the Free Software Foundation; either version 2, or (at your option)
	6	;;;; any later version.
	7	;;;;
	8	;;;; This program is distributed in the hope that it will be useful,
	9	;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	;;;; GNU General Public License for more details.
	12	;;;;
	13	;;;; You should have received a copy of the GNU General Public License
	14	;;;; along with this software; see the file COPYING. If not, write to
	15	;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
	16	;;;; Boston, MA 02111-1307 USA
	17	;;;;
	18	\f
	19	;;;; A simple value history support
	20
	21	(define-module (ice-9 history))
	22
b727d0bd KN	23	(process-define-module '((value-history)))
b727d0bd KN	24
870777d7 KN	25	(define (use-value-history x)
	26	(module-use! (current-module)
	27	(resolve-module '(value-history))))
	28
	29	(define save-value-history
	30	(let ((count 0)
	31	(history (resolve-module '(value-history))))
	32	(lambda (v)
	33	(if (not (unspecified? v))
	34	(let* ((c (1+ count))
	35	(s (string->symbol (simple-format #f "$~A" c))))
	36	(simple-format #t "~A = " s)
	37	(module-define! history s v)
	38	(set! count c))))))
	39
	40	(add-hook! before-eval-hook use-value-history)
	41	(add-hook! before-print-hook save-value-history)