antlr-3.4/runtime/ObjC/Framework/ANTLRRewriteRuleElementStream.h

// [The "BSD licence"]
// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit
// All rights reserved.
//
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// modification, are permitted provided that the following conditions
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//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
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#import <Cocoa/Cocoa.h>
#import "ANTLRTreeAdaptor.h"

// TODO: this should be separated into stream and enumerator classes
@interface ANTLRRewriteRuleElementStream : NSObject {
    NSInteger cursor;
    BOOL dirty;        ///< indicates whether the stream should return copies of its elements, set to true after a call to -reset
    BOOL isSingleElement;
    id singleElement;
    __strong AMutableArray *elements;
    
    __strong NSString *elementDescription;
    __strong id<ANTLRTreeAdaptor> treeAdaptor;
}

@property (assign) NSInteger cursor;
@property (assign) BOOL dirty;
@property (assign) BOOL isSingleElement;
@property (assign) id singleElement;
@property (assign) AMutableArray *elements;
@property (assign) NSString *elementDescription;
@property (retain) id<ANTLRTreeAdaptor> treeAdaptor;

+ (ANTLRRewriteRuleElementStream*) newANTLRRewriteRuleElementStream:(id<ANTLRTreeAdaptor>)aTreeAdaptor
                                                        description:(NSString *)anElementDescription;
+ (ANTLRRewriteRuleElementStream*) newANTLRRewriteRuleElementStream:(id<ANTLRTreeAdaptor>)aTreeAdaptor
                                                        description:(NSString *)anElementDescription
                                                            element:(id)anElement;
+ (ANTLRRewriteRuleElementStream*) newANTLRRewriteRuleElementStream:(id<ANTLRTreeAdaptor>)aTreeAdaptor
                                                        description:(NSString *)anElementDescription
                                                           elements:(NSArray *)theElements;

- (id) initWithTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription;
- (id) initWithTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription element:(id)anElement;
- (id) initWithTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor description:(NSString *)anElementDescription elements:(NSArray *)theElements;

- (void)reset;

- (id<ANTLRTreeAdaptor>) getTreeAdaptor;
- (void) setTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor;

- (void) addElement:(id)anElement;
- (NSInteger) size;
 
- (BOOL) hasNext;
- (id<ANTLRBaseTree>) nextTree;
- (id<ANTLRBaseTree>) _next;       // internal: TODO: redesign if necessary. maybe delegate

- (id) copyElement:(id)element;
- (id) toTree:(id)element;

- (NSString *) getDescription;
- (void) setDescription:(NSString *)description;

@end