类 Ahead<E,​T>

java.lang.Object
jaskell.parsec.common.Ahead<E,​T>
所有已实现的接口:
Parsec<E,​T>

public class Ahead<E,​T>
extends Object
implements Parsec<E,​T>
Created by Mars Liu on 16/9/15. Ahead look forward state and try to match parser. Ahead return the parser data or fail and rollback state whatever