gi
Class LR0_Grammar

java.lang.Object
  gi.Lexicon
      gi.Grammar
          gi.LR0_Grammar

Direct Known Subclasses:

LR1_Grammar, SLR1_Grammar

public class LR0_Grammar
extends Grammar

This class implements an LR(0) parser around a Grammar. The parser adapts to changes in the underlying Grammar. Semantics in a phrase are evaluated during a bottom-up parse, from left to right after all subtrees rooted in the phrase have been constructed. Attributes throughout the phrase are available during evaluation. LR(0) parsing is not very practical, since it ignores lookahead information and is easily confused, but it forms a basis around which SLR(1) and LR(1) parsers are constructed.

Version:

1.3

Author:

© 1999-2009 Craig A. Rich <carich@csupomona.edu>

Method Summary

String

toString() Returns the string representation of this parser, specifically "LR(0)".

Methods inherited from class gi.Grammar

interpret

Methods inherited from class gi.Lexicon

interpret, interpret, interpret, interpret, interpret, interpret

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

toString

public String toString()

Returns the string representation of this parser, specifically "LR(0)".

Overrides:

toString in class Object

Returns:

the string representation of this parser, specifically "LR(0)".

Since:

1.1