HNDiff.h

/*
 * HNDiff.h
 *
 * Copyright (c) 2008, 2013 Hironori Ichimiya <hiron@hironytic.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#import <Foundation/Foundation.h>

@protocol HNSequences;
@class HNDiffOperation;

/**
 * The class which detects the difference between two sequences.
 *
 * This class uses the algorithm described in:
 *     S Wu, U Manber, G Myers, W Miller:
 *     "An O(NP) Sequence Comparison Algorithm",
 *     Information Processing Letters (1990)
 */
@interface HNDiff : NSObject

- (void)detect:(id <HNSequences>)sequences;
- (HNDiffOperation *)operationAtIndex:(NSInteger)index;
- (NSInteger)operationCount;

@end