org.antlr.v4.runtime.atn

Class PredictionContext

java.lang.Object

org.antlr.v4.runtime.atn.PredictionContext

Direct Known Subclasses:

ArrayPredictionContext, EmptyPredictionContext, SingletonPredictionContext

public abstract class PredictionContext
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PredictionContext.IdentityEqualityComparator
static class	PredictionContext.IdentityHashMap

Field Summary

Fields

Modifier and Type	Field and Description
static PredictionContext	EMPTY_FULL
static int	EMPTY_FULL_STATE_KEY
static PredictionContext	EMPTY_LOCAL
static int	EMPTY_LOCAL_STATE_KEY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PredictionContext(int cachedHashCode)

Method Summary

Modifier and Type	Method and Description
protected abstract PredictionContext	addEmptyContext()
PredictionContext	appendContext(int returnContext, PredictionContextCache contextCache)
abstract PredictionContext	appendContext(PredictionContext suffix, PredictionContextCache contextCache)
protected static int	calculateEmptyHashCode()
protected static int	calculateHashCode(PredictionContext[] parents, int[] returnStates)
protected static int	calculateHashCode(PredictionContext parent, int returnState)
abstract boolean	equals(Object o)
abstract int	findReturnState(int returnState)
static PredictionContext	fromRuleContext(ATN atn, RuleContext outerContext)
static PredictionContext	fromRuleContext(ATN atn, RuleContext outerContext, boolean fullContext)
static PredictionContext	getCachedContext(PredictionContext context, ConcurrentMap<PredictionContext,PredictionContext> contextCache, PredictionContext.IdentityHashMap visited)
PredictionContext	getChild(int returnState)
abstract PredictionContext	getParent(int index)
abstract int	getReturnState(int index)
abstract boolean	hasEmpty()
int	hashCode()
abstract boolean	isEmpty()
static boolean	isEmptyLocal(PredictionContext context)
static PredictionContext	join(PredictionContext context0, PredictionContext context1)
protected abstract PredictionContext	removeEmptyContext()
abstract int	size()
String[]	toStrings(Recognizer<?,?> recognizer, int currentState)
String[]	toStrings(Recognizer<?,?> recognizer, PredictionContext stop, int currentState)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_LOCAL

@NotNull
public static final PredictionContext EMPTY_LOCAL

EMPTY_FULL

@NotNull
public static final PredictionContext EMPTY_FULL

EMPTY_LOCAL_STATE_KEY

public static final int EMPTY_LOCAL_STATE_KEY

See Also:

Constant Field Values

EMPTY_FULL_STATE_KEY

public static final int EMPTY_FULL_STATE_KEY

See Also:

Constant Field Values

Constructor Detail

PredictionContext

protected PredictionContext(int cachedHashCode)

Method Detail

calculateEmptyHashCode

protected static int calculateEmptyHashCode()

calculateHashCode

protected static int calculateHashCode(PredictionContext parent,
                                       int returnState)

calculateHashCode

protected static int calculateHashCode(PredictionContext[] parents,
                                       int[] returnStates)

size

public abstract int size()

getReturnState

public abstract int getReturnState(int index)

findReturnState

public abstract int findReturnState(int returnState)

getParent

@NotNull
public abstract PredictionContext getParent(int index)

addEmptyContext

protected abstract PredictionContext addEmptyContext()

removeEmptyContext

protected abstract PredictionContext removeEmptyContext()

fromRuleContext

public static PredictionContext fromRuleContext(@NotNull
                                                ATN atn,
                                                @NotNull
                                                RuleContext outerContext)

fromRuleContext

public static PredictionContext fromRuleContext(@NotNull
                                                ATN atn,
                                                @NotNull
                                                RuleContext outerContext,
                                                boolean fullContext)

join

public static PredictionContext join(PredictionContext context0,
                                     PredictionContext context1)

isEmptyLocal

public static boolean isEmptyLocal(PredictionContext context)

getCachedContext

public static PredictionContext getCachedContext(@NotNull
                                                 PredictionContext context,
                                                 @NotNull
                                                 ConcurrentMap<PredictionContext,PredictionContext> contextCache,
                                                 @NotNull
                                                 PredictionContext.IdentityHashMap visited)

appendContext

public PredictionContext appendContext(int returnContext,
                                       PredictionContextCache contextCache)

appendContext

public abstract PredictionContext appendContext(PredictionContext suffix,
                                                PredictionContextCache contextCache)

getChild

public PredictionContext getChild(int returnState)

isEmpty

public abstract boolean isEmpty()

hasEmpty

public abstract boolean hasEmpty()

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

equals

public abstract boolean equals(Object o)

Overrides:

equals in class Object

toStrings

public String[] toStrings(Recognizer<?,?> recognizer,
                          int currentState)

toStrings

public String[] toStrings(Recognizer<?,?> recognizer,
                          PredictionContext stop,
                          int currentState)