From 810f69d41261d94d99bd0bec78415065753cee5f Mon Sep 17 00:00:00 2001
From: Matthias Benkard <mulk@minimulk.mst-plus>
Date: Thu, 28 Aug 2008 18:46:26 +0200
Subject: Listener: Run the evaluator in its own thread.

---
 MLKListenerController.h |  2 ++
 MLKListenerController.m | 29 +++++++++++++++++++++--------
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/MLKListenerController.h b/MLKListenerController.h
index ef54d19..ce206ac 100644
--- a/MLKListenerController.h
+++ b/MLKListenerController.h
@@ -36,5 +36,7 @@
 - (void)writeChar:(unichar)ch;
 - (void)writeString:(NSString *)string;
 
+- (void)evalObject:(id)object;
+
 - (IBAction)submit:(id)sender;
 @end
diff --git a/MLKListenerController.m b/MLKListenerController.m
index 3db8772..f472448 100644
--- a/MLKListenerController.m
+++ b/MLKListenerController.m
@@ -41,11 +41,10 @@
 
 - (IBAction)submit:(id)sender
 {
+  MLKPackage *package;
   id object;
   NSDictionary *attrs;
   NSString *input = [inputField stringValue];
-  MLKPackage *package;
-  MLKDynamicContext *newctx;
 
   [submitButton setEnabled:NO];
 
@@ -70,10 +69,10 @@
   package = [[MLKDynamicContext currentContext]
              valueForSymbol:[[MLKPackage findPackage:@"COMMON-LISP"]
                              intern:@"*PACKAGE*"]];
-
+  
   NSMutableAttributedString *text = [outputTextView textStorage];
   [text beginEditing];
-
+  
   attrs = [NSDictionary dictionaryWithObjectsAndKeys:
     [NSColor blueColor], NSForegroundColorAttributeName, nil];
   NSString *barePrompt = [NSString stringWithFormat:@"%@> ", [package name]];
@@ -81,15 +80,27 @@
     LAUTORELEASE ([[NSAttributedString alloc] initWithString:barePrompt
                                                   attributes:attrs]);
   [text appendAttributedString:prompt];
-
+  
   attrs = [NSDictionary dictionaryWithObjectsAndKeys:
     [NSColor blackColor], NSForegroundColorAttributeName, nil];
   NSAttributedString *inputFeedback =
     LAUTORELEASE ([[NSAttributedString alloc] initWithString:input attributes:attrs]);
   [text appendAttributedString:inputFeedback];
-
+  
   [[text mutableString] appendString:@"\n"];
-  [text endEditing];
+  [text endEditing];  
+
+  [NSThread detachNewThreadSelector:@selector(evalObject:)
+                           toTarget:self
+                         withObject:object];
+}
+
+- (void)evalObject:(id)object
+{
+  MLKDynamicContext *newctx;
+  NSDictionary *attrs;
+  NSMutableAttributedString *text = [outputTextView textStorage];
+  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
 
   [statusText setStringValue:@"Compiling and executing."];
   NS_DURING
@@ -142,7 +153,7 @@
       attrs = [NSDictionary dictionaryWithObjectsAndKeys:
         [NSColor redColor], NSForegroundColorAttributeName, nil];
       NSAttributedString *response =
-        LAUTORELEASE ([[NSAttributedString alloc] initWithString:MLKPrintToString(object)
+        LAUTORELEASE ([[NSAttributedString alloc] initWithString:bare_msg
                                                       attributes:attrs]);
       [text appendAttributedString:response];
     }
@@ -157,6 +168,8 @@
   [text endEditing];
 
   [submitButton setEnabled:YES];
+  
+  [pool release];
 }
 
 - (void)writeChar:(unichar)ch
-- 
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