mes/module/mes/syntax.mes
Jan Nieuwenhuizen 0bac0cb948 Use include-from-path for upstream.
* module/mes/lalr.scm: Rename from module/mes/lalr.upstream.mes.
* module/mes/lalr.mes: Update.
* module/mes/match.scm: Rename from module/mes/match.upstream.mes.
* module/mes/match.mes: Update.
* module/mes/optargs.scm: Rename from module/mes/optargs.upstream.mes.
* module/mes/optargs.mes: Update.
* module/mes/quasisyntax.scm: Rename from module/mes/quasisyntax.upstream.mes.
* module/mes/quasisyntax.mes: Update.
* module/srfi/srfi-1.scm: Rename from module/srfi/srfi-1.upstream.mes.
* module/srfi/srfi-1.mes: Update.
* module/srfi/srfi-9.scm: Rename from module/srfi/srfi-9.upstream.mes.
* module/srfi/srfi-9.mes: Update.
* AUTHORS: Update.
2016-12-22 19:34:41 +01:00

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1.8 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:
;;; syntax.mes is loaded after scm.mes. It provides the R5RS hygienic
;;; macros define-syntax, syntax-rules and define-syntax-rule.
;;; syntax-rules is adapted from scheme48-1.1/scheme/alt/syntax.scm
;;; Code:
(mes-use-module (mes scm))
(include-from-path "mes/syntax.scm")
(define (syntax-error message thing)
(display "syntax-error:" (current-error-port))
(display message (current-error-port))
(display ":" (current-error-port))
(display thing (current-error-port))
(newline (current-error-port)))
(define (silent-syntax-error message thing)
*unspecified*)
(define-macro (define-syntax-rule id-pattern . template)
`(define-syntax ,(car id-pattern)
(syntax-rules ()
((,(car id-pattern) . ,(cdr id-pattern)) ,@template))))
(define-macro (let-syntax bindings . rest)
`((lambda ()
,@(map (lambda (binding)
`(define-macro (,(car binding) . args)
(,(cadr binding) (cons ',(car binding) args)
(lambda (x0) x0)
eq?)))
bindings)
,@rest)))