128 lines
2.7 KiB
Scheme
128 lines
2.7 KiB
Scheme
;;; -*-scheme-*-
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;;; Mes --- Maxwell Equations of Software
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;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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;;;
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;;; test.mes: This file is part of Mes.
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;;;
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;;; Mes is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; Mes is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with Mes. If not, see <http://www.gnu.org/licenses/>.
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;; The Maxwell Equations of Software -- John McCarthy page 13
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;; http://www.softwarepreservation.org/projects/LISP/book/LISP%201.5%20Programmers%20Manual.pdf
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(display 123)
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4
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(newline)
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(display 'hello-display-symbol)
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(newline)
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(display '(0 1 2))
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(newline)
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(display (- 12 3))
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(newline)
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(define (+ x y) (- x (- 0 y)))
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(display (+ 3 4))
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(newline)
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(define-macro (and x y)
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(cond (x y)
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(#t #f)))
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(define-macro (or x y)
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(cond (x x)
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(#t y)))
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;; EOF2
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;; EOF
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;; EOF2
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(display 'and-0-1:)
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(display (and 0 1))
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(newline)
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(display 'and-#f-2:)
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(display (and #f 2))
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(newline)
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(display 'or-0-1:)
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(display (or 0 1))
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(newline)
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(display 'or-#f-2:)
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(display (or #f 2))
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(newline)
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(define (split-params bindings params)
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(cond ((null bindings) params)
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(#t (split-params (cdr bindings)
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(append params (cons (caar bindings) '()))))))
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(define (split-values bindings values)
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(cond ((null bindings) values)
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(#t (split-values (cdr bindings)
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(append values (cdar bindings) '())))))
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(define-macro (let1 bindings body)
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(cons (cons 'lambda (cons (split-params bindings '()) (cons body '())))
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(split-values bindings '())))
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(let1 ((a 3)
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(b 4))
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((lambda ()
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(display 'let-a:3-b:4)
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(newline)
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(display 'a:)
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(display a)
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(newline)
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(display 'b:)
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(display b)
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(newline))))
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(display 'let1-dun)
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(newline)
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(define-macro (let bindings . body)
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(cons (cons 'lambda (cons (split-params bindings '()) body))
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(split-values bindings '())))
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(let ((p 5)
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(q 6))
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(display 'let-p:3-q:4)
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(newline)
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(display 'p:)
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(display p)
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(newline)
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(display 'q:)
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(display q)
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(newline))
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(display
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(let ((p 5)
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(q 6))
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(display 'hallo)
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(display p)
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(display 'daar)
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(display q)
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(display 'dan)))
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(newline)
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(display 'let-dun)
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(newline)
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'()
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