//
//  RuleStack.h
//  ANTLR
//
//  Created by Alan Condit on 6/9/10.
// [The "BSD licence"]
// Copyright (c) 2010 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 <Foundation/Foundation.h>
#import "BaseStack.h"
#import "HashRule.h"

//#define GLOBAL_SCOPE       0
//#define LOCAL_SCOPE        1
#define HASHSIZE         101
#define HBUFSIZE      0x2000

@interface RuleStack : BaseStack {
}

// Contruction/Destruction
+(RuleStack *)newRuleStack;
+(RuleStack *)newRuleStack:(NSInteger)cnt;
-(id)init;
-(id)initWithLen:(NSInteger)cnt;
-(void)dealloc;

// Instance Methods
- (id) copyWithZone:(NSZone *)aZone;
/* clear -- reinitialize the maplist array */

- (NSInteger)count;
- (NSInteger)size;

- (HashRule *) pop;

- (void) insertObject:(HashRule *)aHashRule atIndex:(NSInteger)idx;
- (HashRule *)objectAtIndex:(NSInteger)idx;
- (void)putHashRuleAtRuleIndex:(NSInteger)aRuleIndex StartIndex:(NSInteger)aStartIndex StopIndex:(NSInteger)aStopIndex;
@end