1 files changed, 55 insertions, 0 deletions
diff --git a/MLKContinuation.m b/MLKContinuation.m
new file mode 100644
index 0000000..e253370
--- /dev/null
+++ b/MLKContinuation.m
@@ -0,0 +1,55 @@
+/* -*- mode: objc; coding: utf-8 -*- */
+/* Toilet Lisp, a Common Lisp subset for the Étoilé runtime.
+ * Copyright (C) 2008  Matthias Andreas Benkard.
+ *
+ * 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/>.
+ */
+
+#import "MLKContinuation.h"
+#import "globals.h"
+#import "util.h"
+
+
+@implementation MLKContinuation
+- (id)init
+{
+  self = [super init];
+  _continuation = make_continuation (MLKRootContinuation);
+  setjump (_continuation->jmpbuf);
+}
+
++ (id)continuation
+{
+  return LAUTORELEASE ([[self alloc] init]);
+}
+
++ (NSArray *)callWithCurrentContinuation:(id <MLKFuncallable>)function
+{
+  id cont = [self continuation];
+  return [function applyToArray:[NSArray arrayWithObject:cont]];
+}
+
+- (NSArray *)applyToArray:(NSArray *)arguments
+{
+  throw_to_continuation (_continuation, (long)arguments, MLKRootContinuation);
+  return nil;
+}
+
+- (void)dealloc
+{
+  // ... _continuation->other ... (only if CONTINUATION_OTHER is defined in scmflags.h)
+  free_continuation (_continuation);
+  [super dealloc];
+}
+@end