-;;; Guile Scheme specification
-
-;; Copyright (C) 2001 Free Software Foundation, Inc.
-
-;; This program 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 2, or (at your option)
-;; any later version.
-;;
-;; This program 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 this program; see the file COPYING. If not, write to
-;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
-
-;;; Code:
-
-(define-module (language scheme spec)
- :use-module (language scheme translate)
- :use-module (system base language)
- :export (scheme))
-
-;;;
-;;; Reader
-;;;
-
-(read-enable 'positions)
-
-(define (read-file port)
- (do ((x (read port) (read port))
- (l '() (cons x l)))
- ((eof-object? x)
- (cons 'begin (reverse! l)))))
-
-;;;
-;;; Language definition
-;;;
-
-(define-language scheme
- :title "Guile Scheme"
- :version "0.5"
- :reader read
- :read-file read-file
- :translator translate
- :printer write
- )
+;;; Guile Scheme specification
+
+;; Copyright (C) 2001, 2009, 2010, 2011, 2012 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)
+ 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)))
HCoop / bpt / guile.git / blobdiff