* Headers/Foundation/Foundation.h

* Headers/Foundation/NSOperation.h
	* Source/GNUmakefile
	* Source/NSOperation.m: Initial implementation of NSOperation
	class.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@28393 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,11 @@
+2009-07-13 14:15-EDT Gregory John Casamento <greg.casamento@gmail.com>
+
+	* Headers/Foundation/Foundation.h
+	* Headers/Foundation/NSOperation.h
+	* Source/GNUmakefile
+	* Source/NSOperation.m: Initial implementation of NSOperation
+	class.
+
 2009-07-11 Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSConcreteMapTable.m: Add some comments.

Headers/Foundation/Foundation.h

@@ -84,6 +84,7 @@
 #import	<Foundation/NSNetServices.h>
 #import	<Foundation/NSNull.h>
 #import	<Foundation/NSNumberFormatter.h>
+#import	<Foundation/NSOperation.h>
 #import	<Foundation/NSPathUtilities.h>
 #import	<Foundation/NSPointerArray.h>
 #import	<Foundation/NSPointerFunctions.h>

Headers/Foundation/NSOperation.h

@@ -0,0 +1,82 @@
+/**Interface for NSOperation for GNUStep
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   Written by:  Gregory Casamento <greg.casamento@gmail.com>
+   Date: 2009
+   
+   This file is part of the GNUstep Base Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02111 USA.
+
+   AutogsdocSource: NSOperation.m
+   */ 
+
+#import <Foundation/NSObject.h>
+
+@class NSMutableArray;
+
+enum {
+  NSOperationQueuePriorityVeryLow = -8,
+  NSOperationQueuePriorityLow = -4,
+  NSOperationQueuePriorityNormal = 0,
+  NSOperationQueuePriorityHigh = 4,
+  NSOperationQueuePriorityVeryHigh = 8
+};
+
+typedef NSInteger NSOperationQueuePriority;
+
+@interface NSOperation : NSObject
+{
+  // Priority...
+  NSOperationQueuePriority priority;
+
+  // Status...
+  BOOL cancelled;
+  BOOL concurrent;
+  BOOL executing;
+  BOOL finished;
+  BOOL ready;
+
+  // Dependencies
+  NSMutableArray *dependencies;
+}
+
+// Initialization
+- (id) init;
+
+// Executing the operation
+- (void) start;
+- (void) main;
+
+// Cancelling the operation
+- (void) cancel;
+
+// Getting the operation status
+- (BOOL) isCancelled;
+- (BOOL) isExecuting;
+- (BOOL) isFinished;
+- (BOOL) isConcurrent;
+- (BOOL) isReady;
+
+// Managing dependencies
+- (void) addDependency: (NSOperation *)op;
+- (void) removeDependency: (NSOperation *)op;
+- (NSArray *)dependencies;
+
+// Prioritization 
+- (NSOperationQueuePriority) queuePriority;
+- (void) setQueuePriority: (NSOperationQueuePriority)priority;
+@end

Source/GNUmakefile

@@ -231,6 +231,7 @@ NSNumberFormatter.m \
 NSObjCRuntime.m \
 NSObject.m \
 NSObject+NSComparisonMethods.m \
+NSOperation.m \
 NSPage.m \
 NSPathUtilities.m \
 NSPipe.m \
@@ -378,6 +379,7 @@ NSNull.h \
 NSNumberFormatter.h \
 NSObjCRuntime.h \
 NSObject.h \
+NSOperation.h \
 NSPathUtilities.h \
 NSPointerArray.h \
 NSPointerFunctions.h \

Source/NSOperation.m

@@ -0,0 +1,147 @@
+/**Interface for NSOperation for GNUStep
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   Written by:  Gregory Casamento <greg.casamento@gmail.com>
+   Date: 2009
+   
+   This file is part of the GNUstep Base Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02111 USA.
+
+   AutogsdocSource: NSOperation.m
+   */ 
+
+#import <Foundation/NSOperation.h>
+#import <Foundation/NSArray.h>
+#import <Foundation/NSException.h>
+
+@implementation NSOperation : NSObject
+// Initialization
+- (id) init
+{
+  if((self = [super init]) != nil)
+    {
+      priority = NSOperationQueuePriorityNormal;
+      
+      cancelled = NO;
+      concurrent = NO;
+      executing = NO;
+      finished = NO;
+      ready = NO;
+      
+      dependencies = [[NSMutableArray alloc] initWithCapacity: 5];
+    }
+  return self;
+}
+
+- (void) dealloc
+{
+  RELEASE(dependencies);
+  [super dealloc];
+}
+
+// Executing the operation
+- (void) start
+{
+  executing = YES;
+  finished = NO;
+
+  if([self isConcurrent])
+    {
+      [self main];
+    }
+  else
+    {
+      NS_DURING
+	{
+	  [self main];
+	}
+      NS_HANDLER
+	{
+	  NSLog(@"%@",[localException reason]);
+	}
+      NS_ENDHANDLER;
+    }
+
+  executing = NO;
+  finished = YES;
+}
+
+- (void) main;
+{
+  // subclass responsibility...
+  [self subclassResponsibility: _cmd];
+}
+
+// Cancelling the operation
+- (void) cancel
+{
+  [self subclassResponsibility: _cmd];
+}
+
+// Getting the operation status
+- (BOOL) isCancelled
+{
+  return NO;
+}
+
+- (BOOL) isExecuting
+{
+  return NO;
+}
+
+- (BOOL) isFinished
+{
+  return NO;
+}
+
+- (BOOL) isConcurrent
+{
+  return NO;
+}
+
+- (BOOL) isReady
+{
+  return NO;
+}
+
+// Managing dependencies
+- (void) addDependency: (NSOperation *)op
+{
+  [dependencies addObject: op];
+}
+
+- (void) removeDependency: (NSOperation *)op
+{
+  [dependencies removeObject: op];
+}
+
+- (NSArray *)dependencies
+{
+  return [[NSArray alloc] initWithArray: dependencies];
+}
+
+// Prioritization 
+- (NSOperationQueuePriority) queuePriority
+{
+  return priority;
+}
+
+- (void) setQueuePriority: (NSOperationQueuePriority)pri
+{
+  priority = pri;
+}
+@end