org.antlr.analysis

Class RuleClosureTransition

java.lang.Object

org.antlr.analysis.Transition

org.antlr.analysis.RuleClosureTransition

All Implemented Interfaces:

Comparable

public class RuleClosureTransition
extends Transition

A transition used to reference another rule. It tracks two targets really: the actual transition target and the state following the state that refers to the other rule. Conversion of an NFA that falls off the end of a rule will be able to figure out who invoked that rule because of these special transitions.

Field Summary

Fields

Modifier and Type	Field and Description
NFAState	followState What node to begin computations following ref to rule
Rule	rule Ptr to the rule definition object for this rule ref

Fields inherited from class org.antlr.analysis.Transition

label, target

Constructor Summary

Constructors

Constructor and Description
RuleClosureTransition(Rule rule, NFAState ruleStart, NFAState followState)

Method Summary

Methods inherited from class org.antlr.analysis.Transition

compareTo, equals, hashCode, isAction, isEpsilon, isSemanticPredicate, toString

Methods inherited from class java.lang.Object

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

Field Detail

rule

public Rule rule

Ptr to the rule definition object for this rule ref

followState

public NFAState followState

What node to begin computations following ref to rule

Constructor Detail

RuleClosureTransition

public RuleClosureTransition(Rule rule,
                     NFAState ruleStart,
                     NFAState followState)