loop2.mes: separate from scm.mes.

GNUmakefile

@@ -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

loop2.mes

@@ -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

scm.mes

@@ -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)

test.mes

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