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// Copyright 2010 Todd Ditchendorf
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#import <Foundation/Foundation.h>
@class PKRuleNode;
@class PKTokenNode;
@class PKToken;
@interface PKParseTree : NSObject <NSCopying> {
PKParseTree *parent;
NSMutableArray *children;
id userInfo;
BOOL matched;
}
+ (PKParseTree *)parseTree;
- (PKRuleNode *)addChildRule:(NSString *)name;
- (PKTokenNode *)addChildToken:(PKToken *)tok;
- (void)addChild:(PKParseTree *)tr;
- (NSString *)treeDescription;
@property (nonatomic, assign, readonly) PKParseTree *parent; // weak ref
@property (nonatomic, retain, readonly) NSMutableArray *children;
@property (nonatomic, retain) id userInfo;
@property (nonatomic, getter=isMatched) BOOL matched;
@end