antlr-3.4/tool/src/main/java/org/antlr/tool/GrammarSemanticsMessage.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.antlr.runtime.Token;
import org.stringtemplate.v4.ST;

/** A problem with the symbols and/or meaning of a grammar such as rule
 *  redefinition.
 */
public class GrammarSemanticsMessage extends Message {
	public Grammar g;
	/** Most of the time, we'll have a token such as an undefined rule ref
	 *  and so this will be set.
	 */
	public Token offendingToken;

	public GrammarSemanticsMessage(int msgID,
						  Grammar g,
						  Token offendingToken)
	{
		this(msgID,g,offendingToken,null,null);
	}

	public GrammarSemanticsMessage(int msgID,
						  Grammar g,
						  Token offendingToken,
						  Object arg)
	{
		this(msgID,g,offendingToken,arg,null);
	}

	public GrammarSemanticsMessage(int msgID,
						  Grammar g,
						  Token offendingToken,
						  Object arg,
						  Object arg2)
	{
		super(msgID,arg,arg2);
		this.g = g;
		this.offendingToken = offendingToken;
	}

	public String toString() {
		line = 0;
		column = 0;
		if ( offendingToken!=null ) {
			line = offendingToken.getLine();
			column = offendingToken.getCharPositionInLine();
		}
		if ( g!=null ) {
			file = g.getFileName();
		}
		ST st = getMessageTemplate();
		if ( arg!=null ) {
			st.add("arg", arg);
		}
		if ( arg2!=null ) {
			st.add("arg2", arg2);
		}
		return super.toString(st);
	}
}