DefaultPreprocessorListener.cs

/*
 * Anarres C Preprocessor
 * Copyright (c) 2007-2008, Shevek
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 */

using System;

namespace CppNet
{
    /**
     * A handler for preprocessor events, primarily errors and warnings.
     *
     * If no PreprocessorListener is installed in a Preprocessor, all
     * error and warning events will throw an exception. Installing a
     * listener allows more intelligent handling of these events.
     */
    public class DefaultPreprocessorListener : PreprocessorListener {
        private int	errors;
        private int	warnings;

        public DefaultPreprocessorListener() {
            clear();
        }

        public void clear() {
            errors = 0;
            warnings = 0;
        }

        public int getErrors() {
            return errors;
        }

        public int getWarnings() {
            return warnings;
        }

        protected void print(String msg) {
            System.Console.Error.WriteLine(msg);
        }

        /**
	     * Handles a warning.
	     *
	     * The behaviour of this method is defined by the
	     * implementation. It may simply record the error message, or
	     * it may throw an exception.
	     */
        public void handleWarning(Source source, int line, int column,
            String msg) {
            warnings++;
            print(source.getName() + ":" + line + ":" + column +
                  ": warning: " + msg); 
            }

        /**
	     * Handles an error.
	     *
	     * The behaviour of this method is defined by the
	     * implementation. It may simply record the error message, or
	     * it may throw an exception.
	     */
        public void handleError(Source source, int line, int column,
            String msg) {
            errors++;
            print(source.getName() + ":" + line + ":" + column +
                  ": error: " + msg); 
            }

        public void handleSourceChange(Source source, String ev) {
        }
    }
}