| ;;; Guile Scheme specification | |
| ;; Copyright (C) 2001, 2009, 2010, 2011, 2012, 2021 Free Software Foundation, Inc. | |
| ;;;; This library is free software; you can redistribute it and/or | |
| ;;;; modify it under the terms of the GNU Lesser General Public | |
| ;;;; License as published by the Free Software Foundation; either | |
| ;;;; version 3 of the License, or (at your option) any later version. | |
| ;;;; | |
| ;;;; This library 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 | |
| ;;;; Lesser General Public License for more details. | |
| ;;;; | |
| ;;;; You should have received a copy of the GNU Lesser General Public | |
| ;;;; License along with this library; if not, write to the Free Software | |
| ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| ;;; Code: | |
| (define-module (language scheme spec) | |
| #:use-module (system base compile) | |
| #:use-module (system base language) | |
| #:use-module (language scheme compile-tree-il) | |
| #:use-module (language scheme decompile-tree-il) | |
| #:export (scheme)) | |
| ;;; | |
| ;;; Language definition | |
| ;;; | |
| (define-language scheme | |
| #:title "Scheme" | |
| #:reader (lambda (port env) | |
| ;; Use the binding of current-reader from the environment. | |
| ;; FIXME: Handle `read-options' as well? | |
| ((or (and=> (and=> (module-variable env 'current-reader) | |
| variable-ref) | |
| fluid-ref) | |
| read-syntax) | |
| port)) | |
| #:compilers `((tree-il . ,compile-tree-il)) | |
| #:decompilers `((tree-il . ,decompile-tree-il)) | |
| #:evaluator (lambda (x module) (primitive-eval x)) | |
| #:printer write | |
| #:make-default-environment | |
| (lambda () | |
| ;; Ideally we'd duplicate the whole module hierarchy so that `set!', | |
| ;; `fluid-set!', etc. don't have any effect in the current environment. | |
| (let ((m (make-fresh-user-module))) | |
| ;; Provide a separate `current-reader' fluid so that | |
| ;; compile-time changes to `current-reader' are | |
| ;; limited to the current compilation unit. | |
| (module-define! m 'current-reader (make-fluid)) | |
| ;; Default to `simple-format', as is the case until | |
| ;; (ice-9 format) is loaded. This allows | |
| ;; compile-time warnings to be emitted when using | |
| ;; unsupported options. | |
| (module-set! m 'format simple-format) | |
| m))) | |