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With inspiration from other libraries

There is a newer version: 2.12.15

/*
 * 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.codegen.model;

import org.antlr.v4.codegen.OutputModelFactory;
import org.antlr.v4.tool.ast.GrammarAST;

public class RuleElement extends SrcOp {
	/** Associated ATN state for this rule elements (action, token, ruleref, ...) */
	public int stateNumber;

	public RuleElement(OutputModelFactory factory, GrammarAST ast) {
		super(factory, ast);
		if ( ast != null && ast.atnState!=null ) stateNumber = ast.atnState.stateNumber;
	}

}