gi
Class LR1_Grammar.Context

java.lang.Object
  gi.Grammar.Production
      gi.LR0_Grammar.Context
          gi.LR1_Grammar.Context

Enclosing class:

LR1_Grammar

static class LR1_Grammar.Context
extends LR0_Grammar.Context

This class implements an LR(1) Context.

Version:

1.3

Author:

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

Field Summary

(package private) Lexicon.Set<Object>	follow The follow Set in this LR(1) Context.
private int	frontier The frontier beyond which reflexive transitive closure has not been pursued.

Fields inherited from class gi.LR0_Grammar.Context

lookahead

Fields inherited from class gi.Grammar.Production

A, beta, serial

Constructor Summary

LR1_Grammar.Context(Grammar.Production p, int lookahead, Lexicon.Set<Object> follow)
Constructs an LR(1) Context.

Method Summary

String

toString() Returns the string representation of this LR(1) Context.

Methods inherited from class gi.LR0_Grammar.Context

equals

Methods inherited from class java.lang.Object

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

Field Detail

follow

final Lexicon.Set<Object> follow

The follow Set in this LR(1) Context.

frontier

private int frontier

The frontier beyond which reflexive transitive closure has not been pursued.

Constructor Detail

LR1_Grammar.Context

LR1_Grammar.Context(Grammar.Production p,
                    int lookahead,
                    Lexicon.Set<Object> follow)

Constructs an LR(1) Context.

Parameters:

p - the Production in this Context.

lookahead - the lookahead position in this Context.

follow - the follow set in this Context.

Method Detail

toString

public String toString()

Returns the string representation of this LR(1) Context.

Overrides:

toString in class LR0_Grammar.Context

Returns:

the string representation of this Context.