Package com.singularsys.jep.configurableparser

Class Lookahead2Iterator<E>

  • Direct Known Subclasses:
    LookaheadNIterator
    public class Lookahead2Iterator<E>
extends java.lang.Object
    An iterator which stores the next two tokens.

    • Constructor Summary

      Constructors 
      Constructor Description
      Lookahead2Iterator()
      Default constructor.
      Lookahead2Iterator​(java.util.Iterator<E> input)
      Decerator constructor around an iterator
      Lookahead2Iterator​(java.util.List<E> input)
      Constructor when the list of tokens is known beforehand.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void consume()
      Eat one token.
      E nextnext()  
      E peekNext()  
      E prev()
      Return the token just consumed.
      void setInputIterator​(java.util.Iterator<E> input)
      Should be called if the default constructor is used.
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • Lookahead2Iterator

        public Lookahead2Iterator()
        Default constructor. If this constructor is used then the setInputIterator(Iterator) method should be called.
        Since:
        3.5

      • Lookahead2Iterator

        public Lookahead2Iterator​(java.util.List<E> input)
        Constructor when the list of tokens is known beforehand.
        Parameters:
        input - the list of tokens

      • Lookahead2Iterator

        public Lookahead2Iterator​(java.util.Iterator<E> input)
        Decerator constructor around an iterator
        Parameters:
        input - the input itterator

    • Method Detail

      • setInputIterator

        public void setInputIterator​(java.util.Iterator<E> input)
        Should be called if the default constructor is used.
        Parameters:
        input - the new input itterator
        Since:
        3.5

      • peekNext

        public E peekNext()

      • nextnext

        public E nextnext()

      • prev

        public E prev()
        Return the token just consumed.
        Returns:
        the token, or null if no token consumed.
        Since:
        Jep 3.5

      • consume

        public void consume()
        Eat one token.

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object