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// [The "BSD licence"]
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// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. The name of the author may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import <Foundation/Foundation.h>
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#import "TreeAdaptor.h"
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// TODO: this should be separated into stream and enumerator classes
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@interface RewriteRuleElementStream : NSObject {
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NSInteger cursor;
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BOOL dirty; ///< indicates whether the stream should return copies of its elements, set to true after a call to -reset
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BOOL isSingleElement;
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id singleElement;
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__strong AMutableArray *elements;
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__strong NSString *elementDescription;
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__strong id<TreeAdaptor> treeAdaptor;
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}
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@property (assign) NSInteger cursor;
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@property (assign) BOOL dirty;
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@property (assign) BOOL isSingleElement;
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@property (assign) id singleElement;
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@property (assign) AMutableArray *elements;
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@property (assign) NSString *elementDescription;
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@property (retain) id<TreeAdaptor> treeAdaptor;
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+ (RewriteRuleElementStream*) newRewriteRuleElementStream:(id<TreeAdaptor>)aTreeAdaptor
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description:(NSString *)anElementDescription;
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+ (RewriteRuleElementStream*) newRewriteRuleElementStream:(id<TreeAdaptor>)aTreeAdaptor
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description:(NSString *)anElementDescription
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element:(id)anElement;
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+ (RewriteRuleElementStream*) newRewriteRuleElementStream:(id<TreeAdaptor>)aTreeAdaptor
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description:(NSString *)anElementDescription
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elements:(NSArray *)theElements;
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- (id) initWithTreeAdaptor:(id<TreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription;
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- (id) initWithTreeAdaptor:(id<TreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription element:(id)anElement;
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- (id) initWithTreeAdaptor:(id<TreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription elements:(NSArray *)theElements;
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- (void)reset;
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- (id<TreeAdaptor>) getTreeAdaptor;
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- (void) setTreeAdaptor:(id<TreeAdaptor>)aTreeAdaptor;
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- (void) addElement:(id)anElement;
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- (NSInteger) size;
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- (BOOL) hasNext;
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- (id<BaseTree>) nextTree;
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- (id<BaseTree>) _next; // internal: TODO: redesign if necessary. maybe delegate
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- (id) copyElement:(id)element;
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- (id) toTree:(id)element;
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- (NSString *) getDescription;
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- (void) setDescription:(NSString *)description;
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@end
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