292 lines
9.5 KiB
Scheme
292 lines
9.5 KiB
Scheme
;;; -*-scheme-*-
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;;; GNU Mes --- Maxwell Equations of Software
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;;; Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;;
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;;; This file is part of GNU Mes.
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;;;
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;;; GNU 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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;;; GNU 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; read-0.mes - bootstrap reader. This file is read by a minimal
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;;; core reader. It only supports s-exps and line-comments; quotes,
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;;; character literals, string literals cannot be used here.
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;;; Code:
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;; boot-00.scm
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(define mes %version)
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(define (defined? x)
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(module-variable (current-module) x))
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(define (cond-expand-expander clauses)
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(if (defined? (car (car clauses)))
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(cdr (car clauses))
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(cond-expand-expander (cdr clauses))))
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(define-macro (cond-expand . clauses)
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(cons 'begin (cond-expand-expander clauses)))
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;; end boot-00.scm
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;; boot-01.scm
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(define (not x) (if x #f #t))
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(define (display x . rest)
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(if (null? rest) (core:display x)
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(core:display-port x (car rest))))
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(define (write x . rest)
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(if (null? rest) (core:write x)
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(core:write-port x (car rest))))
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(define (newline . rest)
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(core:display "\n"))
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(define (cadr x) (car (cdr x)))
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(define (map1 f lst)
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(if (null? lst) (list)
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(cons (f (car lst)) (map1 f (cdr lst)))))
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(define (map f lst)
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(if (null? lst) (list)
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(cons (f (car lst)) (map f (cdr lst)))))
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(define (cons* . rest)
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(if (null? (cdr rest)) (car rest)
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(cons (car rest) (core:apply cons* (cdr rest) (current-module)))))
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(define (apply f h . t)
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(if (null? t) (core:apply f h (current-module))
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(apply f (apply cons* (cons h t)))))
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(define (append . rest)
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(if (null? rest) '()
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(if (null? (cdr rest)) (car rest)
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(append2 (car rest) (apply append (cdr rest))))))
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;; end boot-01.scm
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;; boot-02.scm
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(define-macro (and . x)
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(if (null? x) #t
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(if (null? (cdr x)) (car x)
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(list (quote if) (car x) (cons (quote and) (cdr x))
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#f))))
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(define-macro (or . x)
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(if (null? x) #f
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(if (null? (cdr x)) (car x)
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(list (list (quote lambda) (list (quote r))
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(list (quote if) (quote r) (quote r)
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(cons (quote or) (cdr x))))
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(car x)))))
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(define-macro (mes-use-module module)
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#t)
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;; end boot-02.scm
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;; boot-03.scm
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(define guile? #f)
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(define mes? #t)
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(define (primitive-eval e) (core:eval e (current-module)))
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(define eval core:eval)
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(define (port-filename port) "<stdin>")
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(define (port-line port) 0)
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(define (port-column port) 0)
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(define (ftell port) 0)
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(define (false-if-exception x) x)
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(define (cons* . rest)
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(if (null? (cdr rest)) (car rest)
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(cons (car rest) (core:apply cons* (cdr rest) (current-module)))))
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(define (apply f h . t)
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(if (null? t) (core:apply f h (current-module))
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(apply f (apply cons* (cons h t)))))
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(define-macro (load file)
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(list 'begin
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(list 'if (list 'and (list getenv "MES_DEBUG")
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(list not (list equal2? (list getenv "MES_DEBUG") "0"))
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(list not (list equal2? (list getenv "MES_DEBUG") "1")))
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(list 'begin
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(list core:display-error ";;; read ")
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(list core:display-error file)
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(list core:display-error "\n")))
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(list 'primitive-load file)))
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(define-macro (include file) (list 'load file))
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(define (append . rest)
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(if (null? rest) '()
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(if (null? (cdr rest)) (car rest)
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(append2 (car rest) (apply append (cdr rest))))))
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(if (not (defined? '%datadir))
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(module-define! (current-module) '%datadir "mes"))
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(define %moduledir (string-append %datadir "/module/"))
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(include (string-append %moduledir "mes/type-0.mes"))
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(if (and (getenv "MES_DEBUG")
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(not (equal2? (getenv "MES_DEBUG") "0"))
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(not (equal2? (getenv "MES_DEBUG") "1")))
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(begin
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(core:display-error ";;; %moduledir=")
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(core:display-error %moduledir)
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(core:display-error "\n")))
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(define-macro (include-from-path file)
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(list 'load (list string-append %moduledir file)))
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(define (string-join lst infix)
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(if (null? lst) ""
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(if (null? (cdr lst)) (car lst)
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(string-append (car lst) infix (string-join (cdr lst) infix)))))
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(include-from-path "mes/module.mes")
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(mes-use-module (mes base))
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(mes-use-module (mes quasiquote))
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(mes-use-module (mes let))
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(mes-use-module (mes scm))
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(define-macro (define-module module . rest)
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`(if ,(and (pair? module)
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(= 1 (length module))
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(symbol? (car module)))
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(define (,(car module) . arguments) (main (command-line)))))
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(define-macro (use-modules . rest) #t)
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;; end boot-03.scm
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(define (effective-version) %version)
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(mes-use-module (srfi srfi-1))
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(mes-use-module (srfi srfi-13))
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(mes-use-module (mes fluids))
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(mes-use-module (mes catch))
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(mes-use-module (mes posix))
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(define-macro (include-from-path file)
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(let loop ((path (cons* %moduledir "module" (string-split (or (getenv "GUILE_LOAD_PATH") "") #\:))))
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(cond ((and=> (getenv "MES_DEBUG") (compose (lambda (o) (> o 2)) string->number))
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(core:display-error (string-append "include-from-path: " file " [PATH:" (string-join path ":") "]\n")))
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((and=> (getenv "MES_DEBUG") (compose (lambda (o) (> o 1)) string->number))
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(core:display-error (string-append "include-from-path: " file "\n"))))
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(if (null? path) (error "include-from-path: not found: " file)
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(let ((file (string-append (car path) "/" file)))
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(if (access? file R_OK) `(load ,file)
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(loop (cdr path)))))))
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(define-macro (define-module module . rest)
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`(if ,(and (pair? module)
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(= 1 (length module))
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(symbol? (car module)))
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(define (,(car module) . arguments) (main (command-line)))))
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(define-macro (use-modules . rest) #t)
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(mes-use-module (mes getopt-long))
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(define %main #f)
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(primitive-load 0)
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(let ((tty? (isatty? 0)))
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(define (parse-opts args)
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(let* ((option-spec
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'((no-auto-compile)
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(command (single-char #\c) (value #t))
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(compiled-path (single-char #\C) (value #t))
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(help (single-char #\h))
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(load-path (single-char #\L) (value #t))
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(main (single-char #\e) (value #t))
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(source (single-char #\s) (value #t))
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(version (single-char #\v))
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(version (single-char #\V)))))
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(getopt-long args option-spec #:stop-at-first-non-option #t)))
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(define (source-arg? o)
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(equal? "-s" o))
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(let* ((s-index (list-index source-arg? %argv))
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(args (if s-index (list-head %argv (+ s-index 2)) %argv))
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(options (parse-opts args))
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(command (option-ref options 'command #f))
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(main (option-ref options 'main #f))
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(source (option-ref options 'source #f))
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(files (if s-index (list-tail %argv (+ s-index 1))
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(option-ref options '() '())))
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(help? (option-ref options 'help #f))
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(usage? #f)
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(version? (option-ref options 'version #f)))
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(or
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(and version?
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(display (string-append "mes (GNU Mes) " %version "\n"))
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(exit 0))
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(and (or help? usage?)
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(display "Usage: mes [OPTION]... [FILE]...
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Scheme interpreter for bootstrapping the GNU system.
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Options:
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[-s] FILE load source code from FILE, and exit
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-c EXPR evaluate expression EXPR, and exit
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-- stop scanning arguments; run interactively
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The above switches stop argument processing, and pass all
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remaining arguments as the value of (command-line).
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-e, --main=MAIN after reading script, apply MAIN to command-line arguments
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-h, --help display this help and exit
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-L, --load-path=DIR add DIR to the front of the module load path
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-v, --version display version information and exit
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Ignored for Guile compatibility:
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--auto-compile
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--fresh-auto-compile
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--no-auto-compile
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-C, --compiled-path=DIR
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Report bugs to: bug-mes@gnu.org
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GNU Mes home page: <http://gnu.org/software/mes/>
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General help using GNU software: <http://gnu.org/gethelp/>
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" (or (and usage? (current-error-port)) (current-output-port)))
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(exit (or (and usage? 2) 0)))
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options)
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(and=> (option-ref options 'load-path #f)
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(lambda (dir)
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(setenv "GUILE_LOAD_PATH" (string-append dir ":" (getenv "GUILE_LOAD_PATH")))))
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(when command
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(let* ((prev (set-current-input-port (open-input-string command)))
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(expr (cons 'begin (read-input-file-env (current-module))))
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(set-current-input-port prev))
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(primitive-eval expr)
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(exit 0)))
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(when main (set! %main main))
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(cond ((pair? files)
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(let* ((file (car files))
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(port (if (equal? file "-") 0
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(open-input-file file))))
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(set! %argv files)
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(set-current-input-port port)))
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((and (null? files) tty?)
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(mes-use-module (mes repl))
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(set-current-input-port 0)
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(repl))
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(else #t))))
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(primitive-load 0)
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(primitive-load (open-input-string %main))
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