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+;;; syntax-case.scm --- R6RS support for `syntax-case' macros
+
+;; Copyright (C) 2010 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
+
+
+(library (rnrs syntax-case (6))
+ (export make-variable-transformer
+ syntax-case
+ syntax
+
+ identifier?
+ bound-identifier=?
+ free-identifier=?
+
+ syntax->datum
+ datum->syntax
+ generate-temporaries
+ with-syntax
+
+ quasisyntax
+ unsyntax
+ unsyntax-splicing
+
+ syntax-violation)
+ (import (only (guile) make-variable-transformer
+ syntax-case
+ syntax
+
+ identifier?
+ bound-identifier=?
+ free-identifier=?
+
+ syntax->datum
+ datum->syntax
+ generate-temporaries
+ with-syntax
+
+ quasisyntax
+ unsyntax
+ unsyntax-splicing)
+ (ice-9 optargs)
+ (rnrs base (6))
+ (rnrs conditions (6))
+ (rnrs exceptions (6))
+ (rnrs records procedural (6)))
+
+ (define* (syntax-violation who message form #:optional subform)
+ (let* ((conditions (list (make-message-condition message)
+ (make-syntax-violation form subform)))
+ (conditions (if who
+ (cons (make-who-condition who) conditions)
+ conditions)))
+ (raise (apply condition conditions))))
+)