| /* |
| * [The "BSD license"] |
| * Copyright (c) 2011 Terence Parr and Alan Condit |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * 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 |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #import "AMutableArray.h" |
| #import "ArrayIterator.h" |
| #import "ANTLRRuntimeException.h" |
| |
| @class AMutableArray; |
| |
| @implementation ArrayIterator |
| |
| @synthesize peekObj; |
| //@synthesize count; |
| @synthesize index; |
| @synthesize anArray; |
| |
| |
| + (ArrayIterator *) newIterator:(NSArray *)array |
| { |
| return [[ArrayIterator alloc] initWithArray:array]; |
| } |
| |
| + (ArrayIterator *) newIteratorForDictKey:(NSDictionary *)dict |
| { |
| return [[ArrayIterator alloc] initWithDictKey:dict]; |
| } |
| |
| + (ArrayIterator *) newIteratorForDictObj:(NSDictionary *)dict |
| { |
| return [[ArrayIterator alloc] initWithDictObj:dict]; |
| } |
| |
| - (id) initWithArray:(NSArray *)array |
| { |
| self=[super init]; |
| if ( self != nil ) { |
| if (![array isKindOfClass:[NSArray class]]) { |
| @throw [NSException exceptionWithName:NSInvalidArgumentException |
| reason:[NSString stringWithFormat:@"ArrayIterator expecting NSArray class but got %@", [array className]] |
| userInfo:nil]; |
| } |
| anArray = [array retain]; |
| #ifdef DONTUSENOMO |
| for (int i = 0; i < [array count]; i++) { |
| [anArray addObject:[array objectAtIndex:i]]; |
| count++; |
| } |
| #endif |
| peekObj = nil; |
| count = [anArray count]; |
| index = 0; |
| } |
| return self; |
| } |
| |
| - (id) initWithDictKey:(NSDictionary *)dict |
| { |
| self=[super init]; |
| if ( self != nil ) { |
| if (![dict isKindOfClass:[NSDictionary class]]) { |
| @throw [NSException exceptionWithName:NSInvalidArgumentException |
| reason:[NSString stringWithFormat:@"ArrayIterator expecting NSDictionary class but got %@", [dict className]] |
| userInfo:nil]; |
| } |
| anArray = [[[dict keyEnumerator] allObjects] retain]; |
| peekObj = nil; |
| count = [anArray count]; |
| index = 0; |
| } |
| return self; |
| } |
| |
| - (id) initWithDictObj:(NSDictionary *)dict |
| { |
| self=[super init]; |
| if ( self != nil ) { |
| if (![dict isKindOfClass:[NSDictionary class]]) { |
| @throw [NSException exceptionWithName:NSInvalidArgumentException |
| reason:[NSString stringWithFormat:@"ArrayIterator expecting NSDictionary class but got %@", [dict className]] |
| userInfo:nil]; |
| } |
| anArray = [[[dict objectEnumerator] allObjects] retain]; |
| peekObj = nil; |
| count = [anArray count]; |
| index = 0; |
| } |
| return self; |
| } |
| |
| - (void)dealloc |
| { |
| #ifdef DEBUG_DEALLOC |
| NSLog( @"called dealloc in ArrayIterator" ); |
| #endif |
| if ( anArray ) [anArray release]; |
| [super dealloc]; |
| } |
| |
| - (BOOL) hasNext |
| { |
| if ( peekObj == nil ) { |
| peekObj = [self nextObject]; |
| } |
| return ((peekObj) ? YES : NO); |
| } |
| |
| - (NSObject *) nextObject |
| { |
| id obj = nil; |
| if ( peekObj ) { |
| obj = peekObj; |
| peekObj = nil; |
| return obj; |
| } |
| if ( index >= count ) { |
| return nil; |
| } |
| if ( anArray ) { |
| obj = [anArray objectAtIndex:index++]; |
| if ( index >= count ) { |
| [anArray release]; |
| anArray = nil; |
| index = 0; |
| count = 0; |
| } |
| } |
| return obj; |
| } |
| |
| - (NSArray *) allObjects |
| { |
| if ( (count <= 0 || index >= count) && peekObj == nil ) return nil; |
| AMutableArray *theArray = [AMutableArray arrayWithCapacity:count]; |
| if (peekObj) { |
| [theArray addObject:peekObj]; |
| peekObj = nil; |
| } |
| for (int i = index; i < count; i++) { |
| [theArray addObject:[anArray objectAtIndex:i]]; |
| } |
| return [NSArray arrayWithArray:(NSArray *)theArray]; |
| } |
| |
| - (void) removeObjectAtIndex:(NSInteger)idx |
| { |
| @throw [ANTLRUnsupportedOperationException newException:@"Cant remove object from ArrayIterator"]; |
| } |
| |
| - (NSInteger) count |
| { |
| return (index - count); |
| } |
| |
| - (void) setCount:(NSInteger)cnt |
| { |
| count = cnt; |
| } |
| |
| @end |