OneToOneSourceVisitor.java

package org.codehaus.mojo.apt.test;

/*
 * The MIT License
 *
 * Copyright 2006-2008 The Codehaus.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.io.IOException;
import java.io.PrintWriter;

import com.sun.mirror.apt.AnnotationProcessorEnvironment;
import com.sun.mirror.apt.Filer;
import com.sun.mirror.declaration.ClassDeclaration;
import com.sun.mirror.util.SimpleDeclarationVisitor;

/**
 * Simple apt visitor for use by integration tests. This visitor creates an empty corresponding java file for each class
 * visited.
 * 
 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
 * @version $Id$
 */
public class OneToOneSourceVisitor extends SimpleDeclarationVisitor
{
    // fields -----------------------------------------------------------------

    private final AnnotationProcessorEnvironment environment;

    // constructors -----------------------------------------------------------

    public OneToOneSourceVisitor( AnnotationProcessorEnvironment environment )
    {
        this.environment = environment;
    }

    // AnnotationProcessor methods --------------------------------------------

    /**
     * {@inheritDoc}
     */
    @Override
    public void visitClassDeclaration( ClassDeclaration declaration )
    {
        PrintWriter writer = null;

        try
        {
            Filer filer = environment.getFiler();

            String suffix = "Apt";
            writer = filer.createSourceFile( declaration.getQualifiedName() + suffix );

            String packageName = declaration.getPackage().getQualifiedName();

            if ( packageName.length() > 0 )
            {
                writer.println( "package " + packageName + ";" );
                writer.println();
            }

            writer.println( "public class " + declaration.getSimpleName() + suffix );
            writer.println( "{" );
            writer.println( "}" );
        }
        catch ( IOException exception )
        {
            environment.getMessager().printError( exception.toString() );
        }
        finally
        {
            if ( writer != null )
            {
                writer.close();
            }
        }
    }
}