tool/src/main/java/org/antlr/tool/ToolMessage.java

/*
 * [The "BSD license"]
 *  Copyright (c) 2010 Terence Parr
 *  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.tool;

import org.stringtemplate.v4.ST;

/** A generic message from the tool such as "file not found" type errors; there
 *  is no reason to create a special object for each error unlike the grammar
 *  errors, which may be rather complex.
 *
 *  Sometimes you need to pass in a filename or something to say it is "bad".
 *  Allow a generic object to be passed in and the string template can deal
 *  with just printing it or pulling a property out of it.
 *
 *  TODO what to do with exceptions?  Want stack trace for internal errors?
 */
public class ToolMessage extends Message {

	public ToolMessage(int msgID) {
		super(msgID, null, null);
	}
	public ToolMessage(int msgID, Object arg) {
		super(msgID, arg, null);
	}
	public ToolMessage(int msgID, Throwable e) {
		super(msgID);
		this.e = e;
	}
	public ToolMessage(int msgID, Object arg, Object arg2) {
		super(msgID, arg, arg2);
	}
	public ToolMessage(int msgID, Object arg, Throwable e) {
		super(msgID,arg,null);
		this.e = e;
	}
	@Override
	public String toString() {
		ST st = getMessageTemplate();
		if ( arg!=null ) {
			st.add("arg", arg);
		}
		if ( arg2!=null ) {
			st.add("arg2", arg2);
		}
		if ( e!=null ) {
			st.add("exception", e);
			st.add("stackTrace", e.getStackTrace());
		}
		return super.toString(st);
	}
}