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// File: ObjCClassWrapper.h
// Abstract: ObjCClassWrapper Interface
// Version: 1.1
//
// Based largely on Apple TreeView's example.
#import <Foundation/Foundation.h>
#import "PSTreeGraphModelNode.h"
/// Wraps an Objective-C Class in an NSObject, that we can conveninently query to find
/// related classes (superclass and subclasses) and the instance size. Conforms to
/// the PSTreeGraphModelNode protocol, so that we can use these as model nodes with a TreeGraph.
@interface ObjCClassWrapper : NSObject <PSTreeGraphModelNode, NSCopying>
#pragma mark - Creating Instances
/// Returns an ObjCClassWrapper for the given Objective-C class. ObjCClassWrapper maintains
/// a set of unique instances, so this will always return the same ObjCClassWrapper for a given Class.
+ (ObjCClassWrapper *) wrapperForClass:(Class)aClass;
/// Returns an ObjCClassWrapper for the given Objective-C class, by looking the Class up by
/// name and then invoking +wrapperForClass:
+ (ObjCClassWrapper *) wrapperForClassNamed:(NSString *)aClassName;
#pragma mark - Property Accessors
/// The wrappedClass' name (e.g. @"UIControl" or @"CALayer" or "CAAnimation")
@property (nonatomic, readonly) NSString *name;
/// An ObjCClassWrapper representing the wrappedClass' superclass.
@property (nonatomic, readonly) ObjCClassWrapper *superclassWrapper;
/// An array of ObjCClassWrappers representing the wrappedClass' subclasses.
/// (For convenience, the subclasses are sorted by name.)
@property (nonatomic, readonly) NSArray *subclasses;
/// The wrappedClass' intrinsic instance size (which doesn't include external/auxiliary storage).
@property (nonatomic, readonly) size_t wrappedClassInstanceSize;
@end
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