org.antlr.v4.runtime.atn

类 EpsilonTransition

java.lang.Object

org.antlr.v4.runtime.atn.Transition

org.antlr.v4.runtime.atn.EpsilonTransition

public final class EpsilonTransition
extends Transition

字段概要

从类继承的字段 org.antlr.v4.runtime.atn.Transition

ACTION, ATOM, EPSILON, NOT_SET, PRECEDENCE, PREDICATE, RANGE, RULE, serializationNames, serializationTypes, SET, target, WILDCARD

构造器概要

构造器

构造器和说明
EpsilonTransition(ATNState target)
EpsilonTransition(ATNState target, int outermostPrecedenceReturn)

方法概要

限定符和类型	方法和说明
int	getSerializationType()
boolean	isEpsilon() Determines if the transition is an "epsilon" transition.
boolean	matches(int symbol, int minVocabSymbol, int maxVocabSymbol)
int	outermostPrecedenceReturn()
String	toString()

从类继承的方法 org.antlr.v4.runtime.atn.Transition

label

从类继承的方法 java.lang.Object

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

构造器详细资料

EpsilonTransition

public EpsilonTransition(@NotNull
                         ATNState target)

EpsilonTransition

public EpsilonTransition(@NotNull
                         ATNState target,
                         int outermostPrecedenceReturn)

方法详细资料

outermostPrecedenceReturn

public int outermostPrecedenceReturn()

返回:

the rule index of a precedence rule for which this transition is returning from, where the precedence value is 0; otherwise, -1.

从以下版本开始:

4.4.1

另请参阅:

ATNConfig.isPrecedenceFilterSuppressed(), ParserATNSimulator.applyPrecedenceFilter(ATNConfigSet, ParserRuleContext, PredictionContextCache)

getSerializationType

public int getSerializationType()

指定者:

getSerializationType 在类中 Transition

isEpsilon

public boolean isEpsilon()

从类复制的说明: Transition

Determines if the transition is an "epsilon" transition.

The default implementation returns false.

覆盖:

isEpsilon 在类中 Transition

返回:

true if traversing this transition in the ATN does not consume an input symbol; otherwise, false if traversing this transition consumes (matches) an input symbol.

matches

public boolean matches(int symbol,
                       int minVocabSymbol,
                       int maxVocabSymbol)

指定者:

matches 在类中 Transition

toString

@NotNull
public String toString()

覆盖:

toString 在类中 Object