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loop2.mes: separate from scm.mes.

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This commit is contained in:
Jan Nieuwenhuizen 2016-07-10 10:55:05 +02:00
parent fda8ff7cc4
commit 0ef7238600
4 changed files with 55 additions and 33 deletions
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2
GNUmakefile
View file

@ -28,7 +28,7 @@ check: all
./mes.test ./mes
cat scm.mes test.mes | ./mes
boot.mes: mes.mes scm.mes test.mes
boot.mes: mes.mes loop2.mes scm.mes test.mes
cat $^ > $@
boot: all

53
loop2.mes Normal file
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@ -0,0 +1,53 @@
;;; -*-scheme-*-
;;; Mes --- Maxwell Equations of Software
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;;
;;; loop.mes: This file is part of Mes.
;;;
;;; Mes 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 3 of the License, or (at
;;; your option) any later version.
;;;
;;; Mes 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 Mes. If not, see <http://www.gnu.org/licenses/>.
;; The Maxwell Equations of Software -- John McCarthy page 13
;; http://www.softwarepreservation.org/projects/LISP/book/LISP%201.5%20Programmers%20Manual.pdf
(define (scm-define x a)
(cond ((atom? (cadr x)) (cons (cadr x) (eval (caddr x) a)))
(#t (cons (caadr x) (cons 'lambda (cons (cdadr x) (cddr x)))))))
(define (scm-define-macro x a)
(cons '*macro*
(cons (cons (caadr e) (cons 'lambda (cons (cdadr e) (cddr e))))
(cdr (assoc '*macro* a)))))
(define (loop2 r e a)
;; (display '____loop2)
;; (newline)
;; (display 'e:)
;; (display e)
;; (newline)
(cond ((null? e) r)
((eq? e 'EOF2)
(display 'loop2-exiting...)
(newline))
((atom? e)
(loop2 (eval e a) (readenv a) a))
((eq? (car e) 'define)
(loop2 *unspecified* (readenv a) (cons (scm-define e a) a)))
((eq? (car e) 'define-macro)
(loop2 *unspecified* (readenv a) (cons (scm-define-macro e a) a)))
((eq? (car e) 'set!)
(loop2 (set-cdr! (assoc (cadr e) a) (eval (caddr e) a)) (readenv a) a))
(#t (loop2 (eval e a) (readenv a) a))))
EOF

31
scm.mes
View file

@ -23,37 +23,6 @@
(define (list . rest) rest)
(define (scm-define x a)
(cond ((atom? (cadr x)) (cons (cadr x) (eval (caddr x) a)))
(#t (cons (caadr x) (cons 'lambda (cons (cdadr x) (cddr x)))))))
(define (scm-define-macro x a)
(cons '*macro*
(cons (cons (caadr e) (cons 'lambda (cons (cdadr e) (cddr e))))
(cdr (assoc '*macro* a)))))
(define (loop2 r e a)
;; (display '____loop2)
;; (newline)
;; (display 'e:)
;; (display e)
;; (newline)
(cond ((null? e) r)
((eq? e 'EOF2)
(display 'loop2-exiting...)
(newline))
((atom? e)
(loop2 (eval e a) (readenv a) a))
((eq? (car e) 'define)
(loop2 *unspecified* (readenv a) (cons (scm-define e a) a)))
((eq? (car e) 'define-macro)
(loop2 *unspecified* (readenv a) (cons (scm-define-macro e a) a)))
((eq? (car e) 'set!)
(loop2 (set-cdr! (assoc (cadr e) a) (eval (caddr e) a)) (readenv a) a))
(#t (loop2 (eval e a) (readenv a) a))))
EOF
(define (+ x y) (- x (- 0 y)))
(define-macro (and x y)

2
test.mes
View file

@ -26,7 +26,7 @@
4
(newline)
(cons (display 'one) (display '-) (display 'two))
(cons (display 'one-) (display 'two))
(newline)
(display 'hello-display-symbol)