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authorDavid Thompson <dthompson2@worcester.edu>2014-06-28 18:46:16 -0400
committerDavid Thompson <dthompson2@worcester.edu>2014-06-28 18:46:16 -0400
commitf47eb69a354188154731846dde8b384c2c2f39f6 (patch)
tree6aa1ccb9212836b7c941e771475eb995fa6df9f9 /sly/wrappers/util.scm
parentdf0f2a5f3f09394f1953abbc7e33e9a98204680e (diff)
Rename guile-2d to Sly!
Massive find/replace job.
Diffstat (limited to 'sly/wrappers/util.scm')
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+;;; Sly
+;;; Copyright (C) 2013, 2014 David Thompson <dthompson2@worcester.edu>
+;;;
+;;; 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 3 of the
+;;; License, 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. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Wrapper helper procedures.
+;;
+;;; Code:
+
+(define-module (sly wrappers util)
+ #:export (define-enumeration))
+
+;; Borrowed from guile-opengl
+(define-syntax-rule (define-enumeration enumerator (name value) ...)
+ (define-syntax enumerator
+ (lambda (x)
+ (syntax-case x ()
+ ((_)
+ #''(name ...))
+ ((_ enum) (number? (syntax->datum #'enum))
+ #'enum)
+ ((_ enum)
+ (or (assq-ref '((name . value) ...)
+ (syntax->datum #'enum))
+ (syntax-violation 'enumerator "invalid enumerated value"
+ #'enum)))))))