commonMain.org.antlr.v4.kotlinruntime.atn.EpsilonTransition.kt Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
package org.antlr.v4.kotlinruntime.atn
class EpsilonTransition constructor(target: ATNState, private val outermostPrecedenceReturn: Int = -1) : Transition(target) {
override val serializationType: Int
get() = Transition.EPSILON
override val isEpsilon: Boolean
get() = true
/**
* @return the rule index of a precedence rule for which this transition is
* returning from, where the precedence value is 0; otherwise, -1.
*
* @see ATNConfig.isPrecedenceFilterSuppressed
* @see ParserATNSimulator.applyPrecedenceFilter
* @since 4.4.1
*/
fun outermostPrecedenceReturn(): Int {
return outermostPrecedenceReturn
}
override fun matches(symbol: Int, minVocabSymbol: Int, maxVocabSymbol: Int): Boolean {
return false
}
override fun toString(): String {
return "epsilon"
}
}