/*
 * [The "BSD license"]
 *  Copyright (c) 2012 Terence Parr
 *  Copyright (c) 2012 Sam Harwell
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.antlr.v4.runtime.atn;

import org.antlr.v4.runtime.misc.NotNull;

/** */
public final class RuleTransition extends Transition {
	/** Ptr to the rule definition object for this rule ref */
	public final int ruleIndex;     // no Rule object at runtime

	public final int precedence;

	/** What node to begin computations following ref to rule */
	@NotNull
	public ATNState followState;

	/**
	 * @deprecated Use
	 * {@link #RuleTransition(RuleStartState, int, int, ATNState)} instead.
	 */
	@Deprecated
	public RuleTransition(@NotNull RuleStartState ruleStart,
						  int ruleIndex,
						  @NotNull ATNState followState)
	{
		this(ruleStart, ruleIndex, 0, followState);
	}

	public RuleTransition(@NotNull RuleStartState ruleStart,
						  int ruleIndex,
						  int precedence,
						  @NotNull ATNState followState)
	{
		super(ruleStart);
		this.ruleIndex = ruleIndex;
		this.precedence = precedence;
		this.followState = followState;
	}

	@Override
	public int getSerializationType() {
		return RULE;
	}

	@Override
	public boolean isEpsilon() { return true; }

	@Override
	public boolean matches(int symbol, int minVocabSymbol, int maxVocabSymbol) {
		return false;
	}
}