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78 lines
2.1 KiB
78 lines
2.1 KiB
4 months ago
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//
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// StreamEnumertor.m
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// ANTLR
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//
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// Created by Ian Michell on 29/04/2010.
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// [The "BSD licence"]
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// Copyright (c) 2010 Ian Michell 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 "StreamEnumerator.h"
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@implementation StreamEnumerator
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-(id) init
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{
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self = [super init];
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if (self)
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{
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i = 0;
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}
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return self;
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}
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-(id) initWithNodes:(AMutableArray *) n andEOF:(id) obj
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{
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self = [self init];
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if (self)
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{
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nodes = n;
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eof = obj;
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}
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return self;
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}
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-(BOOL) hasNext
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{
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return i < [nodes count];
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}
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-(id) nextObject
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{
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NSUInteger current = i;
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i++;
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if (current < [nodes count])
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{
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return [nodes objectAtIndex:current];
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}
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return eof;
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}
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@synthesize i;
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@synthesize eof;
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@synthesize nodes;
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@end
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