org.antlr.v4.runtime.atn

Class PredictionContextCache

java.lang.Object

org.antlr.v4.runtime.atn.PredictionContextCache

public class PredictionContextCache
extends Object

Used to cache PredictionContext objects. Its used for the shared context cash associated with contexts in DFA states. This cache can be used for both lexers and parsers.

Author:

Sam Harwell

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	PredictionContextCache.IdentityCommutativePredictionContextOperands
protected static class	PredictionContextCache.PredictionContextAndInt

Field Summary

Fields

Modifier and Type	Field and Description
static PredictionContextCache	UNCACHED

Constructor Summary

Constructors

Constructor and Description
PredictionContextCache()

Method Summary

Modifier and Type	Method and Description
PredictionContext	getAsCached(PredictionContext context)
PredictionContext	getChild(PredictionContext context, int invokingState)
PredictionContext	join(PredictionContext x, PredictionContext y)

Methods inherited from class java.lang.Object

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

Field Detail

UNCACHED

public static final PredictionContextCache UNCACHED

Constructor Detail

PredictionContextCache

public PredictionContextCache()

Method Detail

getAsCached

public PredictionContext getAsCached(PredictionContext context)

getChild

public PredictionContext getChild(PredictionContext context,
                                  int invokingState)

join

public PredictionContext join(PredictionContext x,
                              PredictionContext y)