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/* -*- 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 "MLKListenerController.h"
#import "MLKDynamicContext.h"
#import "MLKPackage.h"
#import "MLKReader.h"
#import "util.h"
@implementation MLKListenerController
- (id)init
{
self = [super init];
ostream = [[NSOutputStream alloc] initToMemory];
lispStream = [[MLKStream alloc] initWithOutputStream:ostream];
[ostream setDelegate:self];
[ostream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[ostream open];
return self;
}
- (void)dealloc
{
[ostream close];
LDESTROY (ostream);
LDESTROY (lispStream);
[super dealloc];
}
- (IBAction)submit:(id)sender
{
id object;
NSDictionary *attrs;
NSString *input = [inputField stringValue];
MLKPackage *package;
[submitButton setEnabled:NO];
NS_DURING
{
object = [MLKReader readFromString:input];
}
NS_HANDLER
{
// A parsing error. Beep and let the user try again.
// XXX Maybe the status line could be made to provide more information on the error.
NSBeep();
[submitButton setEnabled:YES];
[inputField selectText:self];
return;
}
NS_ENDHANDLER;
[inputField setStringValue:@""];
[inputField selectText:self];
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]];
NSAttributedString *prompt =
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];
[statusText setStringValue:@"Compiling and executing."];
NS_DURING
{
// ...
}
NS_HANDLER
{
// ...
}
NS_ENDHANDLER
[statusText setStringValue:@"Ready."];
[text beginEditing];
attrs = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor purpleColor], NSForegroundColorAttributeName, nil];
NSAttributedString *response =
LAUTORELEASE ([[NSAttributedString alloc] initWithString:MLKPrintToString(object)
attributes:attrs]);
[text appendAttributedString:response];
[[text mutableString] appendString:@"\n"];
[text endEditing];
[submitButton setEnabled:YES];
}
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)event
{
NSLog (@"Heya!");
}
@end
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