commonMain.org.antlr.v4.kotlinruntime.atn.LookaheadEventInfo.kt Maven / Gradle / Ivy
// Copyright 2017-present Strumenta and contributors, licensed under Apache 2.0.
// Copyright 2024-present Strumenta and contributors, licensed under BSD 3-Clause.
package org.antlr.v4.kotlinruntime.atn
import org.antlr.v4.kotlinruntime.TokenStream
/**
* This class represents profiling event information for tracking the lookahead
* depth required in order to make a prediction.
*
* @param decision The decision number
* @param configs The final configuration set containing the necessary
* information to determine the result of a prediction, or `null` if
* the final configuration set is not available
* @param predictedAlt The alternative chosen by `adaptivePredict()`,
* not necessarily the outermost alt shown for a rule.
* Left-recursive rules have user-level alts that differ from
* the rewritten rule with a `(...)` block and a `(..)*` loop
* @param input The input token stream
* @param startIndex The start index for the current prediction
* @param stopIndex The index at which the prediction was finally made
* @param fullCtx `true` if the current lookahead is part of an LL
* prediction, otherwise `false` if the current lookahead is part of
* an SLL prediction
*
* @since 4.3
*/
@Suppress("MemberVisibilityCanBePrivate")
public class LookaheadEventInfo(
decision: Int,
configs: ATNConfigSet?,
public var predictedAlt: Int,
input: TokenStream,
startIndex: Int,
stopIndex: Int,
fullCtx: Boolean,
) : DecisionEventInfo(decision, configs, input, startIndex, stopIndex, fullCtx)