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Jiffle is a scripting language for creating and analysing raster images.

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/*
 * Copyright 2009-2011 Michael Bedward
 * 
 * This file is part of jai-tools.
 *
 * jai-tools is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 *
 * jai-tools is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public 
 * License along with jai-tools.  If not, see .
 * 
 */

package jaitools.jiffle.parser;

import java.util.List;

/**
 * Defines methods to intercept parsing error messages. This is used by the
 * Jiffle compiler to capture ANTLR error messages as distinct from errors
 * defined by Jiffle.
 * 
 * @author Michael Bedward
 * @since 0.1
 * @version $Id: ParsingErrorReporter.java 1581 2011-03-25 07:09:35Z michael.bedward $
 */
public interface ParsingErrorReporter {

    /**
     * Handles an error message.
     * 
     * @param errorText the error
     */
    void addError(String errorText);

    /**
     * Clears all previous messages.
     */
    void clear();

    /**
     * Gets the error messages.
     * 
     * @return error messages
     */
    List getErrors();

    /**
     * Gets the number of errorss that have been handled.
     * 
     * @return number of errors
     */
    int getNumErrors();

}