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// 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)