Add classes MLKNoSuchSymbolError, MLKStreamError, and MLKUnboundVariableError.

1 files changed, 44 insertions, 0 deletions

diff --git a/MLKUnboundVariableError.m b/MLKUnboundVariableError.m
new file mode 100644
index 0000000..2408e0d
--- /dev/null
+++ b/MLKUnboundVariableError.m
@@ -0,0 +1,44 @@
+/* -*- 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 "MLKUnboundVariableError.h"
+#import "runtime-compatibility.h"
+#import "util.h"
+
+
+@implementation MLKUnboundVariableError
+-(id) initWithSymbol:(MLKSymbol *)symbol
+       inEnvironment:(MLKEnvironment *)env
+{
+  self = [super initWithName:@"MLKUnboundVariableError"
+                reason:[NSString stringWithFormat:
+                                   @"The variable %@ is unbound.",
+                                   MLKPrintToString(symbol)]
+                userInfo:nil];
+  LASSIGN (_symbol, symbol);
+  LASSIGN (_env, env);
+  return self;
+}
+
+-(void) dealloc
+{
+  LDESTROY (_env);
+  LDESTROY (_symbol);
+  [super dealloc];
+}
+@end