145 lines
4.8 KiB
Scheme
145 lines
4.8 KiB
Scheme
;;; -*-scheme-*-
|
|
|
|
;;; Mes --- Maxwell Equations of Software
|
|
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
|
|
;;;
|
|
;;; 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/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; base-0.mes is the first file being loaded from the Mes core. It
|
|
;;; provides primitives that use Mes internals to create the illusion
|
|
;;; of compatibility with Guile. It is not safe to be run by Guile.
|
|
|
|
;;; Code:
|
|
|
|
#f ;; FIXME -- needed for --dump, then --load
|
|
|
|
(define (primitive-eval e) (eval-env e (current-module)))
|
|
(define eval eval-env)
|
|
(define (expand-macro e) (expand-macro-env e (current-module)))
|
|
|
|
(define quotient /)
|
|
|
|
(define-macro (defined? x)
|
|
(list 'assq x '(cddr (current-module))))
|
|
|
|
(if (defined? 'current-input-port) #t
|
|
(define (current-input-port) 0))
|
|
|
|
(define (current-output-port) 1)
|
|
(define (current-error-port) 2)
|
|
(define (port-filename port) "<stdin>")
|
|
(define (port-line port) 0)
|
|
(define (port-column port) 0)
|
|
(define (ftell port) 0)
|
|
(define (false-if-exception x) x)
|
|
|
|
(define (cons* x . rest)
|
|
(define (loop rest)
|
|
(if (null? (cdr rest)) (car rest)
|
|
(cons (car rest) (loop (cdr rest)))))
|
|
(loop (cons x rest)))
|
|
|
|
(define (apply f h . t) (apply-env f (cons h t) (current-module)))
|
|
(define (apply f h . t)
|
|
(if (null? t) (apply-env f h (current-module))
|
|
(apply f (apply cons* (cons h t)))))
|
|
|
|
(define-macro (cond . clauses)
|
|
(list 'if (null? clauses) *unspecified*
|
|
(if (null? (cdr clauses))
|
|
(list 'if (car (car clauses))
|
|
(list (cons 'lambda (cons '() (cons (car (car clauses)) (cdr (car clauses))))))
|
|
*unspecified*)
|
|
(if (eq? (car (cadr clauses)) 'else)
|
|
(list 'if (car (car clauses))
|
|
(list (cons 'lambda (cons '() (car clauses))))
|
|
(list (cons 'lambda (cons '() (cons *unspecified* (cdr (cadr clauses)))))))
|
|
(list 'if (car (car clauses))
|
|
(list (cons 'lambda (cons '() (car clauses))))
|
|
(cons 'cond (cdr clauses)))))))
|
|
|
|
(define else #t)
|
|
|
|
(define (map f l . r)
|
|
(if (null? l) '()
|
|
(if (null? r) (cons (f (car l)) (map f (cdr l)))
|
|
(if (null? (cdr r))
|
|
(cons (f (car l) (caar r)) (map f (cdr l) (cdar r)))))))
|
|
|
|
(define-macro (simple-let bindings . rest)
|
|
(cons (cons 'lambda (cons (map car bindings) rest))
|
|
(map cadr bindings)))
|
|
|
|
(define-macro (let bindings . rest)
|
|
(cons 'simple-let (cons bindings rest)))
|
|
|
|
(define *input-ports* '())
|
|
(define-macro (push! stack o)
|
|
`(begin
|
|
(set! ,stack (cons ,o ,stack))
|
|
,stack))
|
|
(define-macro (pop! stack)
|
|
`(let ((o (car ,stack)))
|
|
(set! ,stack (cdr ,stack))
|
|
o))
|
|
(define-macro (load file)
|
|
`(begin
|
|
(push! *input-ports* (current-input-port))
|
|
(set-current-input-port (open-input-file ,file))
|
|
(primitive-load)
|
|
(set-current-input-port (pop! *input-ports*))))
|
|
|
|
(define (memq x lst)
|
|
(if (null? lst) #f
|
|
(if (eq? x (car lst)) lst
|
|
(memq x (cdr lst)))))
|
|
|
|
(define (string-join lst infix)
|
|
(if (null? (cdr lst)) (car lst)
|
|
(string-append (car lst) infix (string-join (cdr lst) infix))))
|
|
|
|
(define *mes-prefix* "module/")
|
|
(define (module->file o)
|
|
(string-append (string-join (map symbol->string o) "/") ".mes"))
|
|
|
|
(define *modules* '(mes/base-0.mes))
|
|
(define (mes-load-module-env module a)
|
|
(push! *input-ports* (current-input-port))
|
|
(set-current-input-port (open-input-file (string-append *mes-prefix* (module->file module))))
|
|
(let ((x (eval-env (append (cons 'begin (read-input-file-env #f a))
|
|
'((current-module)))
|
|
a)))
|
|
(set-current-input-port (pop! *input-ports*))
|
|
x))
|
|
(define-macro (mes-use-module module)
|
|
`(begin
|
|
(if (not (memq (string->symbol ,(module->file module)) *modules*))
|
|
(begin
|
|
(set! *modules* (cons (string->symbol ,(module->file module)) *modules*))
|
|
;; (display "loading file=" (current-error-port))
|
|
;; (display ,(module->file module) (current-error-port))
|
|
;; (newline (current-error-port))
|
|
(load ,(string-append *mes-prefix* (module->file module)))))))
|
|
|
|
(define (not x)
|
|
(if x #f #t))
|
|
|
|
(mes-use-module (srfi srfi-0))
|
|
(mes-use-module (mes base))
|
|
(mes-use-module (mes scm))
|