Use exceptions.

src/XMPPExceptions.m

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2011, Jonathan Schleifer <js@webkeks.org>
+ *
+ * https://webkeks.org/hg/objxmpp/
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "XMPPExceptions.h"
+
+@implementation XMPPException
+@synthesize connection;
+
++ newWithClass: (Class)class_
+    connection: (XMPPConnection*)conn
+{
+	return [[self alloc] initWithClass: class_
+				connection: conn];
+}
+
+- initWithClass: (Class)class_
+{
+	Class c = isa;
+	[self release];
+	@throw [OFNotImplementedException newWithClass: c
+					      selector: _cmd];
+}
+
+- initWithClass: (Class)class_
+     connection: (XMPPConnection*)conn
+{
+	self = [super initWithClass: class_];
+
+	@try {
+		connection = [conn retain];
+	} @catch (id e) {
+		[self release];
+		@throw e;
+	}
+
+	return self;
+}
+
+- (void)dealloc
+{
+	[connection release];
+
+	[super dealloc];
+}
+
+- (OFString*)description
+{
+	OFAutoreleasePool *pool;
+
+	if (description != nil)
+		return description;
+
+	pool = [[OFAutoreleasePool alloc] init];
+	description = [[OFString alloc]
+	    initWithFormat: @"An exception occurred in class %@!",
+			    [self className]];
+	[pool release];
+
+	return description;
+}
+@end
+
+@implementation XMPPStringPrepFailedException
+@synthesize profile, string;
+
++ newWithClass: (Class)class_
+    connection: (XMPPConnection*)conn
+       profile: (OFString*)profile
+	string: (OFString*)string
+{
+	return [[self alloc] initWithClass: class_
+				connection: conn
+				   profile: profile
+				    string: string];
+}
+
+- initWithClass: (Class)class_
+     connection: (XMPPConnection*)conn
+{
+	Class c = isa;
+	[self release];
+	@throw [OFNotImplementedException newWithClass: c
+					      selector: _cmd];
+}
+
+- initWithClass: (Class)class_
+     connection: (XMPPConnection*)conn
+	profile: (OFString*)profile_
+	 string: (OFString*)string_
+{
+	self = [super initWithClass: class_
+			 connection: conn];
+
+	@try {
+		profile = [profile_ copy];
+		string = [string_ copy];
+	} @catch (id e) {
+		[self release];
+		@throw e;
+	}
+
+	return self;
+}
+
+- (void)dealloc
+{
+	[profile release];
+	[string release];
+
+	[super dealloc];
+}
+@end