org.antlr.v4.runtime.atn

类 SemanticContext.Predicate

java.lang.Object

org.antlr.v4.runtime.atn.SemanticContext

org.antlr.v4.runtime.atn.SemanticContext.Predicate

封闭类:

SemanticContext

public static class SemanticContext.Predicate
extends SemanticContext

嵌套类概要

从类继承的嵌套类/接口 org.antlr.v4.runtime.atn.SemanticContext

SemanticContext.AND, SemanticContext.Operator, SemanticContext.OR, SemanticContext.PrecedencePredicate, SemanticContext.Predicate

字段概要

字段

限定符和类型	字段和说明
boolean	isCtxDependent
int	predIndex
int	ruleIndex

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

NONE

构造器概要

构造器

限定符	构造器和说明
protected	Predicate()
	Predicate(int ruleIndex, int predIndex, boolean isCtxDependent)

方法概要

限定符和类型	方法和说明
boolean	equals(Object obj)
<T> boolean	eval(Recognizer<T,?> parser, RuleContext parserCallStack) For context independent predicates, we evaluate them without a local context (i.e., null context).
int	hashCode()
String	toString()

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

and, evalPrecedence, or

从类继承的方法 java.lang.Object

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

字段详细资料

ruleIndex

public final int ruleIndex

predIndex

public final int predIndex

isCtxDependent

public final boolean isCtxDependent

构造器详细资料

Predicate

protected Predicate()

Predicate

public Predicate(int ruleIndex,
                 int predIndex,
                 boolean isCtxDependent)

方法详细资料

eval

public <T> boolean eval(Recognizer<T,?> parser,
                        RuleContext parserCallStack)

从类复制的说明: SemanticContext

For context independent predicates, we evaluate them without a local context (i.e., null context). That way, we can evaluate them without having to create proper rule-specific context during prediction (as opposed to the parser, which creates them naturally). In a practical sense, this avoids a cast exception from RuleContext to myruleContext.

For context dependent predicates, we must pass in a local context so that references such as $arg evaluate properly as _localctx.arg. We only capture context dependent predicates in the context in which we begin prediction, so we passed in the outer context here in case of context dependent predicate evaluation.

指定者:

eval 在类中 SemanticContext

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object