/*
 * 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.tool;

Defines behavior of object able to handle error messages from ANTLR including
 both tool errors like "can't write file" and grammar ambiguity warnings.
 To avoid having to change tools that use ANTLR (like GUIs), I am
 wrapping error data in Message objects and passing them to the listener.
 In this way, users of this interface are less sensitive to changes in
 the info I need for error messages.
/** Defines behavior of object able to handle error messages from ANTLR including
 *  both tool errors like "can't write file" and grammar ambiguity warnings.
 *  To avoid having to change tools that use ANTLR (like GUIs), I am
 *  wrapping error data in Message objects and passing them to the listener.
 *  In this way, users of this interface are less sensitive to changes in
 *  the info I need for error messages.
 */
public interface ANTLRToolListener {
	public void info(String msg);
	public void error(ANTLRMessage msg);
	public void warning(ANTLRMessage msg);
}