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/*
 * Copyright 2003-2007 the original author or authors.
 *
 * 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.
 */
package org.codehaus.groovy.control.messages;

import java.io.PrintWriter;

import org.codehaus.groovy.control.Janitor;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.syntax.SyntaxException;

/**
 * A class for error messages produced by the parser system.
 *
 * @author Chris Poirier
 * @version $Id$
 */

public class SyntaxErrorMessage extends Message {
    protected SyntaxException cause;
    protected SourceUnit source;
    
    public SyntaxErrorMessage(SyntaxException cause, SourceUnit source) {
        this.cause = cause;
        this.source = source;
        cause.setSourceLocator(source.getName());
    }

    /**
     * Returns the underlying SyntaxException.
     */

    public SyntaxException getCause() {
        return this.cause;
    }

    /**
     * Writes out a nicely formatted summary of the syntax error.
     */

    public void write(PrintWriter output, Janitor janitor) {
        String name = source.getName();
        int line = getCause().getStartLine();
        int column = getCause().getStartColumn();
        String sample = source.getSample(line, column, janitor);

        output.print(name + ": " + line + ": " + getCause().getMessage());
        if (sample != null) {
            output.println();
            output.print(sample);
            output.println();
        }
    }

}