Pre-commit cleanup

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270812 13f79535-47bb-0310-9956-ffa450edef68
24 years ago · 5a497d7dc7
--- a/proposal/mutant/build.xml
+++ b/proposal/mutant/build.xml
@@ -1,87 +1,6 @@
 <project default="jars">
    <property name="src.dir" value="src/main"/>
    <property name="component.src.dir" value="${src.dir}/org/apache/ant/component"/>
    <property name="build.dir" value="build"/>
    <property name="build.classes" value="build/classes"/>
    <property name="component.classes.dir" value="org/apache/ant/component"/>
    <property name="build.javadocs" value="build/javadocs"/>
    <property name="build.lib" value="${build.dir}/lib"/>
    <property name="frontend.manifest" value="${src.dir}/org/apache/ant/frontend/manifest.mf"/>
    <property name="egg.manifest" value="${src.dir}/org/apache/ant/frontend/eggmanifest.mf"/>
    
    <target name="compile">
        <mkdir dir="${build.classes}"/>
        <depend srcdir="${src.dir}"
                destdir="${build.classes}" closure="yes" 
                cache="${build.dir}/depcache"/>
        <javac srcdir="${src.dir}"
               destdir="${build.classes}"
               deprecation="true"
               debug="true"/>
    <target name="jars">
      <echo message="Mutant is being retructured - returning shortly"/>
    </target>

    <target name="build-task">
        <echo message="building Task jar from ${component.classes.dir}/${taskset}/**/*.class"/>
        <jar jarfile="${build.lib}/task/${taskset}.tsk" 
             basedir="${build.classes}">
            <zipfileset dir="${component.src.dir}/${taskset}" 
                        prefix="ANT-INF" 
                        includes="antlib.xml"/>
            <include name="${component.classes.dir}/${taskset}/**/*.class" />
        </jar>
    </target>

    
    <target name="jars" depends="compile">
        <mkdir dir="${build.lib}"/>
        <mkdir dir="${build.lib}/task"/>
        <jar jarfile="${build.lib}/frontend.jar" 
             basedir="${build.classes}"
             manifest="${frontend.manifest}">
            <include name="org/apache/ant/frontend/*.class" />
        </jar>
        <jar jarfile="${build.lib}/egg.jar" 
             basedir="${build.classes}"
             manifest="${egg.manifest}">
            <include name="org/apache/ant/frontend/RemoteLauncher.class" />
            <include name="org/apache/ant/core/support/AntClassLoader.class" />
        </jar>
        <jar jarfile="${build.lib}/core.jar" 
             basedir="${build.classes}">
            <include name="org/apache/ant/core/**/*.class" />
        </jar>
        <antcall target="build-task">
            <param name="taskset" value="core"/>
        </antcall>
        <antcall target="build-task">
            <param name="taskset" value="file"/>
        </antcall>
        <antcall target="build-task">
            <param name="taskset" value="thread"/>
        </antcall>
        <copy todir="${build.lib}">
          <fileset dir="lib"/>
        </copy>
    </target>
    
    <target name="clean">
        <delete dir="${build.dir}"/>
    </target>
    
    <target name="javadoc">
        <mkdir dir="${build.javadocs}"/>
        <javadoc packagenames="org.apache.*"
                 sourcepath="${src.dir}"
                 destdir="${build.javadocs}"
                 author="true"
                 version="true"
                 windowtitle="Ant 2.0 API"
                 doctitle="Ant 2.0"
                 private="true"
                 bottom="Copyright &#169; 2001 Apache Software Foundation. All Rights Reserved.">
          <group title="Ant Core" packages="org.apache.ant.core*" />
          <group title="Front End" packages="org.apache.ant.frontend*" />
          <group title="XML Parsing" packages="org.apache.ant.xml*" />
        </javadoc>
    </target>
 </project>
 </project>
--- a/proposal/mutant/src/bootstrap/org/apache/ant/bootstrap/BootstrapLoader.java
+++ b/proposal/mutant/src/bootstrap/org/apache/ant/bootstrap/BootstrapLoader.java
@@ -1,298 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.bootstrap;

 import java.io.*;
 import java.util.*;
 import java.util.zip.*;
 import java.lang.reflect.*;

 /**
 * Bootstrap class to build the rest of ant with a minimum of user intervention
 *
 * The bootstrap class is able to act as a class loader to load new classes/jars
 * into the VM in which it is running.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class BootstrapLoader extends ClassLoader {
    static public final String RECURSION_GUARD = "ant.bootstrap.recursionGuard";
    static private final int BUFFER_SIZE = 1024;
    
    private String[] classpathElements;
    
    public BootstrapLoader(String classpath) {
        StringTokenizer tokenizer = new StringTokenizer(classpath, File.pathSeparator);
        classpathElements = new String[tokenizer.countTokens()];
        
        for (int i = 0; tokenizer.hasMoreTokens(); ++i) {
            classpathElements[i] = tokenizer.nextToken();
        }
    }
    
    protected Class findClass(String name)
                   throws ClassNotFoundException {
        String resourceName = name.replace('.', '/') + ".class";
        InputStream classStream = getResourceStream(resourceName);
        
        if (classStream == null) {
            throw new ClassNotFoundException();
        }
        
        try {            
            return getClassFromStream(classStream, name);
        }
        catch (IOException ioe) {
            ioe.printStackTrace();
            throw new ClassNotFoundException();
        }
    }

    /**
     * Get a stream to read the requested resource name.
     *
     * @param name the name of the resource for which a stream is required.
     *
     * @return a stream to the required resource or null if the resource cannot be
     * found on the loader's classpath.
     */
    private InputStream getResourceStream(String name) {
        // we need to search the components of the path to see if we can find the 
        // class we want. 
        InputStream stream = null;
 
        for (int i = 0; i < classpathElements.length && stream == null; ++i) {
            File pathComponent = new File(classpathElements[i]);
            stream = getResourceStream(pathComponent, name);
        }

        return stream;
    }
    

                   
    /**
     * Get a stream to read the requested resource name.
     *
     * @param name the name of the resource for which a stream is required.
     *
     * @return a stream to the required resource or null if the resource cannot be
     * found on the loader's classpath.
     */
    public InputStream getResourceAsStream(String name) {
        return getResourceStream(name);
    }
    
    protected Class loadClass(String name,
                              boolean resolve)
                   throws ClassNotFoundException {
        Class requestedClass = findLoadedClass(name);
        try {
            if (requestedClass == null) {
                requestedClass = findClass(name);
                if (resolve) {
                    resolveClass(requestedClass);
                }
            }
            return requestedClass;
        }
        catch (ClassNotFoundException cnfe) {
            return super.loadClass(name, resolve);
        }
    }                    

    /**
     * Get an inputstream to a given resource in the given file which may
     * either be a directory or a zip file.
     *
     * @param file the file (directory or jar) in which to search for the resource.
     * @param resourceName the name of the resource for which a stream is required.
     *
     * @return a stream to the required resource or null if the resource cannot be
     * found in the given file object
     */
    private InputStream getResourceStream(File file, String resourceName) {
        try {
            if (!file.exists()) {
                return null;
            }
            
            if (file.isDirectory()) {
                File resource = new File(file, resourceName); 
                
                if (resource.exists()) {   
                    return new FileInputStream(resource);
                }
            }
            else {
                ZipFile zipFile = null;
                try {
                    zipFile = new ZipFile(file);
        
                    ZipEntry entry = zipFile.getEntry(resourceName);
                    if (entry != null) {
                        // we need to read the entry out of the zip file into
                        // a baos and then 
                        ByteArrayOutputStream baos = new ByteArrayOutputStream();
                        byte[] buffer = new byte[BUFFER_SIZE];
                        int bytesRead;
                        InputStream stream = zipFile.getInputStream(entry);
                        while ((bytesRead = stream.read(buffer, 0, BUFFER_SIZE)) != -1) {
                            baos.write(buffer, 0, bytesRead);
                        }
                        return new ByteArrayInputStream(baos.toByteArray());   
                    }
                }
                finally {
                    if (zipFile != null) {
                        zipFile.close();
                    }
                }
            }
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        
        return null;   
    }

    /**
     * Read a class definition from a stream.
     *
     * @param stream the stream from which the class is to be read.
     * @param classname the class name of the class in the stream.
     *
     * @return the Class object read from the stream.
     *
     * @throws IOException if there is a problem reading the class from the
     * stream.
     */
    private Class getClassFromStream(InputStream stream, String classname) 
                throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int bytesRead = -1;
        byte[] buffer = new byte[1024];
        
        while ((bytesRead = stream.read(buffer, 0, 1024)) != -1) {
            baos.write(buffer, 0, bytesRead);
        }
        
        byte[] classData = baos.toByteArray();

        return defineClass(classname, classData, 0, classData.length); 
    }


    static private void buildAnt() {
        System.out.println("Bootstrapping Ant ...");
        
    }

    static private void runWithToolsJar(String[] args) {
        try {
            
            String javaHome = System.getProperty("java.home");
            if (javaHome.endsWith("jre")) {
                javaHome = javaHome.substring(0, javaHome.length() - 4);
            }
            File toolsjar = new File(javaHome + "/lib/tools.jar");
            if (!toolsjar.exists()) {
                System.out.println("Unable to locate tools.jar. expected it to be in " +
                                           toolsjar.getPath());
                return;                                           
            }                                            
            String newclasspath = toolsjar.getPath() + File.pathSeparator + 
                                  System.getProperty("java.class.path");
            
            System.out.println("New Classpath is " + newclasspath);
            
            BootstrapLoader loader = new BootstrapLoader(newclasspath);
            
            Class newBootClass = loader.loadClass("org.apache.ant.bootstrap.BootstrapLoader",
                                                  true);
            final Class[] param = { Class.forName("[Ljava.lang.String;") };
            final Method main = newBootClass.getMethod("main", param);
            final Object[] argument = { args };
            main.invoke(null, argument);
        }
        catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Unable to run boot with tools.jar");
        }
    }
    
    static public void main(String[] args) {
        // check whether the tools.jar is already in the classpath.
        try {
            Class compilerClass = Class.forName("sun.tools.javac.Main");
            System.out.println("Compiler is available");
        } catch (ClassNotFoundException cnfe) {
            if (System.getProperty(RECURSION_GUARD) != null) {
                cnfe.printStackTrace();
                System.out.println("Unable to load compiler");
                return;
            }
            System.setProperty(RECURSION_GUARD, "yes");
            System.out.println("Compiler is not on classpath - locating ...");
            runWithToolsJar(args);
            return;                                                           
        }
        
        buildAnt();
    }
 }


--- a/proposal/mutant/src/main/org/apache/ant/component/core/AntAspectHandler.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/AntAspectHandler.java
@@ -1,75 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import java.io.File;
 import java.net.*;
 import org.apache.ant.core.execution.*;

 /**
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class AntAspectHandler extends AbstractAspectHandler {
    private String id;
    
    public void setId(String id) {
        this.id = id;
    }

    public void afterConfigElement(Object element) throws ExecutionException {
        getAspectContext().setDataValue(id, element);
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/core/Echo.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/Echo.java
@@ -1,162 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import org.apache.ant.core.execution.*;
 import org.apache.ant.core.types.*;
 import java.io.*;

 /**
 * Echo
 *
 * @author costin@dnt.ro
 */
 public class Echo extends AbstractTask {
    protected String message = ""; // required
    protected File file = null;
    protected boolean append = false;
    
    // by default, messages are always displayed
    protected int logLevel = BuildEvent.MSG_WARN;   
    
    /**
     * Does the work.
     *
     * @throws ExecutionException if someting goes wrong with the build
     */
    public void execute() throws ExecutionException {
        if (file == null) {
            log(message, logLevel);
        } else {
            FileWriter out = null;
            try {
                out = new FileWriter(file.getAbsolutePath(), append);
                out.write(message, 0, message.length());
            } catch (IOException ioe) {
                throw new ExecutionException(ioe);
            } finally {
                if (out != null) {
                    try {
                        out.close();
                    } catch (IOException ioex) {}
                }
            }
        }
    }

    /**
     * Sets the message variable.
     *
     * @param msg Sets the value for the message variable.
     */
    public void setMessage(String msg) {
        this.message = msg;
    }

    /**
     * Sets the file attribute.
     */
    public void setFile(File file) {
        this.file = file;
    }

    /**
     * Shall we append to an existing file?
     */
    public void setAppend(boolean append) {
        this.append = append;
    }

    /**
     * Set a multiline message.
     */
    public void addText(String msg) {
        message += msg;
    }

    /**
     * Set the logging level to one of
     * <ul>
     *  <li>error</li>
     *  <li>warning</li>
     *  <li>info</li>
     *  <li>verbose</li>
     *  <li>debug</li>
     * <ul>
     * <p>The default is &quot;warning&quot; to ensure that messages are
     * displayed by default when using the -quiet command line option.</p>
     */
    public void setLevel(EchoLevel echoLevel) {
        String option = echoLevel.getValue();
        if (option.equals("error")) {
            logLevel = BuildEvent.MSG_ERR;
        } else if (option.equals("warning")) {
            logLevel = BuildEvent.MSG_WARN;
        } else if (option.equals("info")) {
            logLevel = BuildEvent.MSG_INFO;
        } else if (option.equals("verbose")) {
            logLevel = BuildEvent.MSG_VERBOSE;
        } else {
            // must be "debug"
            logLevel = BuildEvent.MSG_DEBUG;
        }
    }

    public static class EchoLevel extends EnumeratedAttribute {
        public String[] getValues() {
            return new String[] {"error", "warning", "info", "verbose", "debug"};
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/core/EnumeratedAttributeConverter.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/EnumeratedAttributeConverter.java
@@ -1,98 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import org.apache.ant.core.execution.*;
 import org.apache.ant.core.types.EnumeratedAttribute;

 /**
 * Convert between a string and an enumeration
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class EnumeratedAttributeConverter implements AntConverter {
    private ExecutionFrame frame;
    
    public void init(ExecutionFrame frame) {
        this.frame = frame;
    }
    
    public Object convert(String value, Class type) throws ConversionException {
        // The string represents a value
        // get the frame's URL
        try {
            Object instance = type.newInstance();
            if (!(instance instanceof EnumeratedAttribute)) {
                throw new ConversionException("The type " + type.getName() 
                                             + " is not a subclass of EnumeratedAttribute");
            }
            EnumeratedAttribute enum = (EnumeratedAttribute)instance;
            enum.setValue(value.trim());
            return enum;
        }
        catch (InstantiationException e) {
            throw new ConversionException("Unable to instantiate the enumerated type "
                                          + type.getName());
        }
        catch (IllegalAccessException e) {
            throw new ConversionException("Illegale access when instantiation enumerated type "
                                          + type.getName());
        }
        catch (ExecutionException e) {
            throw new ConversionException("Unable to set the value of the enumerated type "
                                          + type.getName() + ": " + e.getMessage());
        }                                                      
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/core/FileConverter.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/FileConverter.java
@@ -1,87 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import java.io.File;
 import java.net.*;
 import org.apache.ant.core.execution.*;

 /**
 * Convert between a string and a data type
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class FileConverter implements AntConverter {
    private ExecutionFrame frame;
    
    public void init(ExecutionFrame frame) {
        this.frame = frame;
    }
    
    public Object convert(String value, Class type) throws ConversionException {
        // The string represents a value
        // get the frame's URL
        try {
            URL url = new URL(frame.getBaseURL(), value);
            if (url.getProtocol().equals("file")) {
                return new File(url.getFile());
            }
        }
        catch (MalformedURLException e) {
            // ignore and return as a file.
        }
        return new File(value);
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/core/Property.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/Property.java
@@ -1,248 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import java.util.*;
 import java.io.*;
 import org.apache.ant.core.execution.*;
 import java.net.*;

 /**
 * 
 */ 
 public class Property extends AbstractTask {
    private String name;
    private String value;
    private URL file;
    private String resource;
 //    private Path classpath;
    private String env;
 //    private Reference ref = null;
    
    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public String getValue() {
        return value;
    }

    public void setFile(URL file) {
        this.file = file;
    }

    public URL getFile() {
        return file;
    }

    public void setLocation(File location) {
        setValue(location.getAbsolutePath());
    }

 //    public void setRefid(Reference ref) {
 //        this.ref = ref;
 //    }
 //
 //    public Reference getRefid() {
 //        return ref;
 //    }
 //
    public void setResource(String resource) {
        this.resource = resource;
    }

    public String getResource() {
        return resource;
    }

    public void setEnvironment(String env) {
        this.env = env;
    }

    public String getEnvironment() {
        return env;
    }

 //    public void setClasspath(Path classpath) {
 //        if (this.classpath == null) {
 //            this.classpath = classpath;
 //        } else {
 //            this.classpath.append(classpath);
 //        }
 //    }
 //    
 //    public Path createClasspath() {
 //        if (this.classpath == null) {
 //            this.classpath = new Path(project);
 //        }
 //        return this.classpath.createPath();
 //    }
 //    
 //    public void setClasspathRef(Reference r) {
 //        createClasspath().setRefid(r);
 //    }
 //

    public void execute() throws ExecutionException {
        if ((name != null) && (value != null)) {
            getTaskContext().setDataValue(name, value);
        }

        if (file != null) {
            loadFile(file);
        }

 //        if (resource != null) loadResource(resource);
 //
 //        if (env != null) loadEnvironment(env);
 //
 //        if ((name != null) && (ref != null)) {
 //            Object obj = ref.getReferencedObject(getProject());
 //            if (obj != null) {
 //                addProperty(name, obj.toString());
 //            }
 //        }
    }

    protected void loadFile (URL url) throws ExecutionException {
        Properties props = new Properties();
        log("Loading " + url, BuildEvent.MSG_VERBOSE);
        try {
            InputStream stream = null;
            if (url.getProtocol().equals("file")) {
                File file = new File(url.getFile());
            
                if (file.exists()) {
                    stream = new FileInputStream(file);
                } 
            }
            else {
                stream = url.openStream();
            }
            
            if (stream != null) {
                try { 
                    props.load(stream);
                    resolveAllProperties(props);
                    addProperties(props);
                } finally {
                    stream.close();
                }
            }
        } catch (IOException e) {
            throw new ExecutionException("Unable to load property file: " + url, e);
        }
    }

    protected void addProperties(Properties properties) throws ExecutionException {
        for (Iterator i = properties.keySet().iterator(); i.hasNext();) {
            String propertyName = (String)i.next();
            String propertyValue = properties.getProperty(propertyName);
            getTaskContext().setDataValue(propertyName, 
                                          getTaskContext().replacePropertyRefs(propertyValue));
        }
    }

    private void resolveAllProperties(Properties props) throws ExecutionException {
        for (Iterator propIterator = props.keySet().iterator(); propIterator.hasNext();) {
            String name = (String)propIterator.next();
            String value = props.getProperty(name);

            boolean resolved = false;
            while (!resolved) {
                List fragments = new ArrayList();
                List propertyRefs = new ArrayList();
                ExecutionFrame.parsePropertyString(value, fragments, propertyRefs);
                
                resolved = true;
                if (propertyRefs.size() != 0) {
                    StringBuffer sb = new StringBuffer();
                    Iterator i = fragments.iterator();
                    Iterator j = propertyRefs.iterator();
                    while (i.hasNext()) {
                        String fragment = (String)i.next();
                        if (fragment == null) {
                            String propertyName = (String)j.next();
                            if (propertyName.equals(name)) {
                                throw new ExecutionException("Property " + name 
                                                             + " from " + file 
                                                             + " was circularly defined.");
                            }
                            if (props.containsKey(propertyName)) {
                                fragment = props.getProperty(propertyName);
                                resolved = false;
                            }
                            else {
                                fragment = "${" + propertyName + "}";
                            }
                        }
                        sb.append(fragment);
                    }
                    value = sb.toString();
                    props.put(name, value);
                }
            }
        }
    }    
 }

--- a/proposal/mutant/src/main/org/apache/ant/component/core/URLConverter.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/URLConverter.java
@@ -1,93 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.core;

 import org.apache.ant.core.execution.*;

 import java.net.*;
 import java.io.File;

 /**
 * Convert between a string and a URL, resolved to the ExecutionFrame's base
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class URLConverter implements AntConverter {
    private ExecutionFrame frame;
    
    public void init(ExecutionFrame frame) {
        this.frame = frame;
    }
    
    public Object convert(String value, Class type) throws ConversionException {
        // The string represents a value
        // get the frame's URL
        try {
            URL url = new URL(frame.getBaseURL(), value);
            return url;
        }
        catch (MalformedURLException e) {
            //try a local file
            try {
                File file = new File(value);
                return file.toURL();
            }
            catch (MalformedURLException e2) {
                throw new ConversionException("Unable to convert " + value 
                                              + " into a URL relative to the project's base");
            }                                              
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/core/antlib.xml
+++ b/proposal/mutant/src/main/org/apache/ant/component/core/antlib.xml
@@ -1,18 +0,0 @@
 <antlib>
   <!-- Tasks -->
   <taskdef name="property" classname="org.apache.ant.component.core.Property"/>
   <taskdef name="echo" classname="org.apache.ant.component.core.Echo"/>
   
   <!-- Data Types -->
   <taskdef name="patternset" classname="org.apache.ant.core.types.PatternSet"/>
   <taskdef name="fileset" classname="org.apache.ant.core.types.FileSet"/>
   
   <!-- Converters -->
   <converter target="java.io.File" classname="org.apache.ant.component.core.FileConverter"/>
   <converter target="java.net.URL" classname="org.apache.ant.component.core.URLConverter"/>
   <converter target="org.apache.ant.core.types.EnumeratedAttribute" 
              classname="org.apache.ant.component.core.EnumeratedAttributeConverter"/>
              
   <!-- Aspect Handlers -->
   <aspect prefix="ant" classname="org.apache.ant.component.core.AntAspectHandler"/>              
 </antlib>
--- a/proposal/mutant/src/main/org/apache/ant/component/file/antlib.xml
+++ b/proposal/mutant/src/main/org/apache/ant/component/file/antlib.xml
@@ -1,2 +0,0 @@
 <antlib>
 </antlib>
--- a/proposal/mutant/src/main/org/apache/ant/component/thread/Parallel.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/thread/Parallel.java
@@ -1,78 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.thread;

 import org.apache.ant.core.execution.*;
 import java.io.*;
 import java.util.*;

 /**
 * Parallel execution of contained tasks.
 *
 */
 public class Parallel extends AbstractTask implements TaskContainer {
    private List tasks = new ArrayList();
    
    public void addTask(Task nestedTask) {
        tasks.add(nestedTask);
    }

    public void execute() throws ExecutionException {
        for (Iterator i = tasks.iterator(); i.hasNext(); ) {
            Task nestedTask = (Task)i.next();
            nestedTask.execute();
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/thread/Sequential.java
+++ b/proposal/mutant/src/main/org/apache/ant/component/thread/Sequential.java
@@ -1,78 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.component.thread;

 import org.apache.ant.core.execution.*;
 import java.io.*;
 import java.util.*;

 /**
 * Sequential execution of contained tasks.
 *
 */
 public class Sequential extends AbstractTask implements TaskContainer {
    private List tasks = new ArrayList();
    
    public void addTask(Task nestedTask) {
        tasks.add(nestedTask);
    }

    public void execute() throws ExecutionException {
        for (Iterator i = tasks.iterator(); i.hasNext(); ) {
            Task nestedTask = (Task)i.next();
            nestedTask.execute();
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/component/thread/antlib.xml
+++ b/proposal/mutant/src/main/org/apache/ant/component/thread/antlib.xml
@@ -1,4 +0,0 @@
 <antlib>
   <taskdef name="parallel" classname="org.apache.ant.component.thread.Parallel"/>
   <taskdef name="sequential" classname="org.apache.ant.component.thread.Sequential"/>
 </antlib>
--- a/proposal/mutant/src/main/org/apache/ant/core/config/ComponentManager.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/config/ComponentManager.java
@@ -1,147 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.config;

 import java.io.*;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.util.*;
 import org.apache.ant.core.execution.*;
 import org.apache.ant.core.support.*;
 import org.apache.ant.core.xml.AntLibParser;
 import org.xml.sax.SAXParseException;

 /**
 * Manager for Ant components
 *
 * The component manager is responsible for locating and loading the 
 * components contained in Ant's lib/task directory.
 * 
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class ComponentManager {
    /**
     * When Ant is run remotely, we need to look up the list of component
     * libraries from the server.
     */
    static public String COMPONENT_INDEX = "taskindex";
    
    /**
     * Create the component manager. When the component manager is created
     * it will read the component definitions from the  files in
     * Ant's lib/task directory
     */ 
    static public AntLibrary[] getComponents() throws LocationException, ConfigException {
        try {
            URL componentsLocation = new URL(AntLocator.getLibraryURL(), "task/");
            URL[] componentFiles = null;
            if (componentsLocation.getProtocol().equals("file")) {
                // component directory is local - we determine the 
                // component files by scanning the local directory
                HashSet componentFilesTypes = new HashSet();
                componentFilesTypes.add(".tsk");
                componentFilesTypes.add(".jar");
                componentFilesTypes.add(".zip");
                File componentsDirectory = new File(componentsLocation.getFile());
                componentFiles = AntLocator.getDirectoryURLs(componentsDirectory, componentFilesTypes);
            }
            else {
                // The component directory is remote - we determine the
                // list of component files by reading a "known"  list file.
                URL componentListURL = new URL(componentsLocation, COMPONENT_INDEX);
                BufferedReader reader = null;
                List componentList = new ArrayList();
                try {
                    reader = new BufferedReader(new InputStreamReader(componentListURL.openStream()));
                    String line = null;
                    while ((line = reader.readLine()) != null) {
                        componentList.add(new URL(componentsLocation, line.trim()));
                    }
                }
                finally {
                    if (reader != null) {
                        reader.close();
                    }
                }
                componentFiles = (URL[])componentList.toArray(new URL[0]);
            }
                        
            AntLibParser libdefParser = new AntLibParser();
            
            List libraries = new ArrayList();
            
            for (int i = 0; i < componentFiles.length; ++i) {
                // We create a classloader for the component library
                URL[] componentURLs = new URL[]{componentFiles[i]};
                AntClassLoader componentClassLoader 
                    = new AntClassLoader(componentURLs, 
                                         ComponentManager.class.getClassLoader(),
                                         componentFiles[i].toString());
                URL libDefinition = componentClassLoader.getResource("ANT-INF/antlib.xml");
                if (libDefinition != null) {
                    AntLibrary library 
                        = libdefParser.parseAntLibrary(libDefinition, componentClassLoader);
                    libraries.add(library);                            
                }
            }
            
            return (AntLibrary[])libraries.toArray(new AntLibrary[0]);
        }
        catch (IOException e) {
            throw new ConfigException(e);
        }
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AbstractAspectHandler.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AbstractAspectHandler.java
@@ -1,83 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public abstract class AbstractAspectHandler implements AspectHandler {
    private ExecutionContext aspectContext;
    
    public void setAspectContext(ExecutionContext context) {
        this.aspectContext = context;
    }

    protected ExecutionContext getAspectContext() {
        return aspectContext;
    }
    
    public void beforeConfigElement(Object element) throws ExecutionException  {
 }

    public void afterConfigElement(Object element) throws ExecutionException  {
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AbstractTask.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AbstractTask.java
@@ -1,96 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public abstract class AbstractTask implements Task {
    private ExecutionContext taskContext;
    
    public void setTaskContext(ExecutionContext context) {
        this.taskContext = context;
    }

    protected ExecutionContext getTaskContext() {
        return taskContext;
    }
    
    /**
     * Log a message with the default (INFO) priority.
     *
     * @param msg the message to be logged.
     */
    public void log(String msg) {
        log(msg, BuildEvent.MSG_INFO);
    }
    
    /**
     * Log a mesage with the give priority.
     *
     * @param the message to be logged.
     * @param msgLevel the message priority at which this message is to be logged.
     */
    public void log(String msg, int msgLevel) {
        taskContext.log(msg, msgLevel);
    }

 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AntConverter.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AntConverter.java
@@ -1,65 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 /**
 * An AntConverter is a Converter which is initialised with the 
 * ExecutionFrame context in which it will perform its conversions
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public interface AntConverter extends Converter {
    void init(ExecutionFrame frame);
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AntLibrary.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AntLibrary.java
@@ -1,137 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * This object represents an Ant library definition. An Ant library
 * is a set of plug-in for Ant consisting primarily of tasks but may include
 * other ant components.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class AntLibrary {
    /**
     * The task definitions contained by this library
     */
    private Map taskDefinitions = new HashMap();
    
    /**
     * The converter definitions contained by this library
     */
    private Map converterDefinitions = new HashMap();
    
    /**
     * The aspect handler definitions contained by this library
     */
    private Map aspectDefinitions = new HashMap();
    
    /**
     * Add a task definition to this library
     */
    public void addTaskDefinition(TaskDefinition taskDefinition) {
        String taskName = taskDefinition.getName();
        taskDefinitions.put(taskName, taskDefinition);
    }
    
    /**
     * Add a converter definition to this library
     */
    public void addConverterDefinition(ConverterDefinition converterDef) {
        String targetClassname = converterDef.getTargetClassName();
        converterDefinitions.put(targetClassname, converterDef);
    }

    /**
     * Add an aspect handler definition to this library
     */
    public void addAspectDefinition(AspectDefinition aspectDef) {
        String aspectPrefix = aspectDef.getAspectPrefix();
        aspectDefinitions.put(aspectPrefix, aspectDef);
    }

    /**
     * Get the task definitions
     *
     * @return an iterator which returns TaskDefinition objects.
     */
    public Iterator getTaskDefinitions() {
        return taskDefinitions.values().iterator();
    }
    
   
    /**
     * Get the converter definitions
     *
     * @return an iterator which returns ConverterDefinition objects.
     */
    public Iterator getConverterDefinitions() {
        return converterDefinitions.values().iterator();
    }

    /**
     * Get the aspect handler definitions
     *
     * @return an iterator which returns AspectDefinition objects.
     */
    public Iterator getAspectDefinitions() {
        return aspectDefinitions.values().iterator();
    }
    
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AspectDefinition.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AspectDefinition.java
@@ -1,124 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.util.*;
 import java.net.URL;

 /**
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class AspectDefinition {
    /** The URL of the library which defines this aspect handler */
    private URL aspectLibraryURL;
     
    /** The aspect's tag */
    private String aspectPrefix;
    
    /** The aspect handler's classname */
    private String aspectClassName;
    
    /** The aspect handler's class loader. */
    private ClassLoader aspectClassLoader;
    
    /** The class to which this converter converts. */
    private Class aspectHandlerClass = null;

    public AspectDefinition(URL aspectLibraryURL, String aspectPrefix, 
                            String aspectClassName, ClassLoader aspectClassLoader) {
        this.aspectLibraryURL = aspectLibraryURL;
        this.aspectPrefix = aspectPrefix;
        this.aspectClassName = aspectClassName;
        this.aspectClassLoader = aspectClassLoader;
    }
    
    /**
     * Get the URL where this aspect handler was defined.
     *
     * @returns a URL of the lib defintion file
     */
    public URL getLibraryURL() {
        return aspectLibraryURL;
    }
    
    /**
     * Get the Aspect's Prefix
     */
    public String getAspectPrefix() {
        return aspectPrefix;
    }


    /**
     * Get the aspect handler class
     *
     * @return a class object for this aspect handler's class
     */
    public synchronized Class getAspectHandlerClass() throws ClassNotFoundException {
        if (aspectHandlerClass == null) {
            aspectHandlerClass = Class.forName(aspectClassName, true, aspectClassLoader);
        }
        return aspectHandlerClass;
    }
    
    /**
     * Get the classname of the aspect handler that is being defined.
     */
    public String getAspectHandlerClassName() {
        return aspectClassName;
    }
    
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/AspectHandler.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/AspectHandler.java
@@ -1,75 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * An AspectHandler is used to handle a set of aspects which may occur in a number
 * of elements in the build model.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public interface AspectHandler {
   
    void setAspectContext(ExecutionContext context);
    
    void beforeConfigElement(Object element) throws ExecutionException ;
    void afterConfigElement(Object element) throws ExecutionException ;
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/BuildEvent.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/BuildEvent.java
@@ -1,171 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;

 import java.util.EventObject;
 import org.apache.ant.core.model.*;

 /*
 * A BuildEvent indicates the occurence of a significant event
 * in the build.
 *
 * All build events come from an ExecutionFrame or an ExecutionManager.
 * There are a number of different types of event and they will
 * generally be associated with some build element from the build model.
 */
 public class BuildEvent extends EventObject {
    public static final int MSG_ERR = 0;
    public static final int MSG_WARN = 1;
    public static final int MSG_INFO = 2;
    public static final int MSG_VERBOSE = 3;
    public static final int MSG_DEBUG = 4;

    public static final int BUILD_STARTED = 1;
    public static final int BUILD_FINISHED = 2;
    public static final int TARGET_STARTED = 3;
    public static final int TARGET_FINISHED = 4;
    public static final int TASK_STARTED = 5;
    public static final int TASK_FINISHED = 6;
    public static final int MESSAGE = 7;

    private int eventType;
    private BuildElement buildElement = null;
    private Throwable cause = null;
    private String message = null;
    private int messagePriority;

    /**
     * Create a build event. 
     * 
     * @param soure the source of the build event.
     * @param eventType the type of the buildEvent.
     * @param buildElement the build element with which the event is associated.
     */
    public BuildEvent(Object source, int eventType, BuildElement buildElement) {
        super(source);
        this.eventType = eventType;
        this.buildElement = buildElement;
    }
    
    /**
     * Create a build event with an associated exception. 
     * 
     * @param soure the source of the build event.
     * @param eventType the type of the buildEvent.
     * @param buildElement the build element with which the event is associated.
     */
    public BuildEvent(Object source, int eventType, BuildElement buildElement, 
                      Throwable cause) {
        this(source, eventType, buildElement);                        
        this.cause = cause;
    }

    /**
     * Create a build event for a message 
     * 
     * @param soure the source of the build event.
     * @param buildElement the build element with which the event is associated.
     * @param message the message associated with this event
     * @param priority the message priority
     */
    public BuildEvent(Object source, BuildElement buildElement, String message, 
                      int priority) {
        this(source, MESSAGE, buildElement);                        
        this.message = message;
        this.messagePriority = priority;
    }
    
    /**
     * Get the type of this event
     *
     * @return the event type
     */
    public int getEventType() {
        return eventType;
    }
    
    /**
     * Get the build element involved in this event.
     *
     * @return the build element to which this event is associated.
     */
    public BuildElement getBuildElement() {
        return buildElement;
    }
    
    /**
     *  Returns the logging message. This field will only be set
     *  for "messageLogged" events.
     *
     */
    public String getMessage() {
        return message;
    }

    /**
     *  Returns the priority of the logging message. This field will only
     *  be set for "messageLogged" events.
     */
    public int getPriority(){
        return messagePriority;
    }

    /**
     *  Returns the exception that was thrown, if any. This field will only
     *  be set for "taskFinished", "targetFinished", and "buildFinished" events.
     */
    public Throwable getCause() {
        return cause;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/BuildEventSupport.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/BuildEventSupport.java
@@ -1,116 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;

 import java.util.*;
 import org.apache.ant.core.model.*;

 /**
 * BuildEventSupport is used by classes which which to send 
 * build events to the BuoldListeners
 */
 public class BuildEventSupport {
    private List listeners = new ArrayList();
    
    public void addBuildListener(BuildListener listener) {
        listeners.add(listener);
    }
    
    public void removeBuildListener(BuildListener listener) {
        listeners.remove(listener);
    }

    public void forwardEvent(BuildEvent event) {
        for (Iterator i = listeners.iterator(); i.hasNext();) {
            BuildListener listener = (BuildListener)i.next();
            listener.processBuildEvent(event);
        }
    }
    
    public void fireBuildStarted(Object source, BuildElement element) {
        BuildEvent event = new BuildEvent(source, BuildEvent.BUILD_STARTED, element);
        forwardEvent(event);
    }

    public void fireBuildFinished(Object source, BuildElement element, Throwable cause) {
        BuildEvent event = new BuildEvent(source, BuildEvent.BUILD_FINISHED, element, cause);
        forwardEvent(event);
    }

    public void fireTargetStarted(Object source, BuildElement element) {
        BuildEvent event = new BuildEvent(source, BuildEvent.TARGET_STARTED, element);
        forwardEvent(event);
    }

    public void fireTargetFinished(Object source, BuildElement element, Throwable cause) {
        BuildEvent event = new BuildEvent(source, BuildEvent.TARGET_FINISHED, element, cause);
        forwardEvent(event);
    }

    public void fireTaskStarted(Object source, BuildElement element) {
        BuildEvent event = new BuildEvent(source, BuildEvent.TASK_STARTED, element);
        forwardEvent(event);
    }

    public void fireTaskFinished(Object source, BuildElement element, Throwable cause) {
        BuildEvent event = new BuildEvent(source, BuildEvent.TASK_FINISHED, element, cause);
        forwardEvent(event);
    }

    public void fireMessageLogged(Object source, BuildElement element,
                                   String message, int priority) {
        BuildEvent event = new BuildEvent(source,  element, message, priority);
        forwardEvent(event);
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/BuildListener.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/BuildListener.java
@@ -1,67 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.util.EventListener;

 /**
 *  Classes that implement this interface will be notified when
 *  things happend during a build.
 *
 *  @see BuildEvent
 */
 public interface BuildListener extends EventListener {
    void processBuildEvent(BuildEvent event);
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ClassIntrospectionException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ClassIntrospectionException.java
@@ -1,144 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;


 import java.io.*;

 /**
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ClassIntrospectionException extends Exception {
    /** 
     * Exception that might have caused this one. 
     */
    private Throwable cause = null;

    /**
     * Constructs an exception with the given descriptive message.
     * @param msg Description of or information about the exception.
     */
    public ClassIntrospectionException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public ClassIntrospectionException(String msg, Throwable cause) {
        super(msg);
        this.cause = cause;
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     * @param cause Exception that might have caused this one.
     */
    public ClassIntrospectionException(Throwable cause) {
        super(cause.getMessage());
        this.cause = cause;
    }

    /**
     * Returns the nested exception.
     *
     * @return the underlying exception
     */
    public Throwable getCause() {
        return cause;
    }

    /**
     * Print the stack trace to System.err
     */
    public void printStackTrace() {
        printStackTrace(System.err);
    }
    
    /**
     * Print the stack trace to the given PrintStream
     *
     * @param ps the PrintStream onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintStream ps) {
        synchronized (ps) {
            ps.println(this);
            if (cause != null) {
                ps.println("--- Nested Exception ---");
                cause.printStackTrace(ps);
            }
        }
    }
    
    /**
     * Print the stack trace to the given PrintWriter
     *
     * @param pw the PrintWriter onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintWriter pw) {
        synchronized (pw) {
            pw.println(this);
            if (cause != null) {
                pw.println("--- Nested Exception ---");
                cause.printStackTrace(pw);
            }
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ClassIntrospector.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ClassIntrospector.java
@@ -1,477 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.lang.reflect.*;
 import java.io.File;
 import java.util.*;

 /**
 * Introspects a class and builds a set of objects to assist in intospecting the 
 * class.
 *
 * @author Stefan Bodewig <a href="mailto:stefan.bodewig@megabit.net">stefan.bodewig@megabit.net</a> 
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ClassIntrospector {
    /**
     * holds the types of the attributes that could be set.
     */
    private Hashtable attributeTypes;

    /**
     * holds the attribute setter methods.
     */
    private Hashtable attributeSetters;

    /**
     * Holds the types of nested elements that could be created.
     */
    private Hashtable nestedTypes;

    /**
     * Holds methods to create nested elements.
     */
    private Hashtable nestedCreators;

    /**
     * The method to add PCDATA stuff.
     */
    private Method addText = null;

    /**
     * The Class that's been introspected.
     */
    private Class bean;

    /**
     * returns the boolean equivalent of a string, which is considered true
     * if either "on", "true", or "yes" is found, ignoring case.
     */
    public static boolean toBoolean(String s) {
        return (s.equalsIgnoreCase("on") ||
                s.equalsIgnoreCase("true") ||
                s.equalsIgnoreCase("yes"));
    }

    public ClassIntrospector(final Class bean, Map converters) {
        attributeTypes = new Hashtable();
        attributeSetters = new Hashtable();
        nestedTypes = new Hashtable();
        nestedCreators = new Hashtable();
        this.bean = bean;

        Method[] methods = bean.getMethods();
        for (int i=0; i<methods.length; i++) {
            final Method m = methods[i];
            final String name = m.getName();
            Class returnType = m.getReturnType();
            Class[] args = m.getParameterTypes();

            if ("addText".equals(name)
                && java.lang.Void.TYPE.equals(returnType)
                && args.length == 1
                && java.lang.String.class.equals(args[0])) {

                addText = methods[i];

            } else if (name.startsWith("set")
                       && java.lang.Void.TYPE.equals(returnType)
                       && args.length == 1
                       && !args[0].isArray()) {

                String propName = getPropertyName(name, "set");
                AttributeSetter as = createAttributeSetter(m, args[0], converters);
                if (as != null) {
                    attributeTypes.put(propName, args[0]);
                    attributeSetters.put(propName, as);
                }

            } else if (name.startsWith("create")
                       && !returnType.isArray()
                       && !returnType.isPrimitive()
                       && args.length == 0) {

                String propName = getPropertyName(name, "create");
                nestedTypes.put(propName, returnType);
                nestedCreators.put(propName, new NestedCreator() {

                        public Object create(Object parent) 
                            throws InvocationTargetException, 
                            IllegalAccessException {

                            return m.invoke(parent, new Object[] {});
                        }

                    });
                
            } else if (name.startsWith("add")
                       && java.lang.Void.TYPE.equals(returnType)
                       && args.length == 1
                       && !java.lang.String.class.equals(args[0])
                       && !args[0].isArray()
                       && !args[0].isPrimitive()) {
                 
                try {
                    final Constructor c = 
                        args[0].getConstructor(new Class[] {});
                    String propName = getPropertyName(name, "add");
                    nestedTypes.put(propName, args[0]);
                    nestedCreators.put(propName, new NestedCreator() {

                            public Object create(Object parent) 
                                throws InvocationTargetException, IllegalAccessException, InstantiationException {
                                
                                Object o = c.newInstance(new Object[] {});
                                m.invoke(parent, new Object[] {o});
                                return o;
                            }

                        });
                } catch (NoSuchMethodException nse) {
                }
                    
            }
        }
    }
    
    /**
     * Sets the named attribute.
     */
    public void setAttribute(Object element, String attributeName, 
                             String value)
        throws ClassIntrospectionException, ConversionException {
        AttributeSetter as = (AttributeSetter) attributeSetters.get(attributeName);
        if (as == null) {
            String msg = "Class " + element.getClass().getName() +
                " doesn't support the \"" + attributeName + "\" attribute";
            throw new ClassIntrospectionException(msg);
        }
        try {
            as.set(element, value);
        } catch (IllegalAccessException ie) {
            // impossible as getMethods should only return public methods
            throw new ClassIntrospectionException(ie);
        } catch (InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (t instanceof ClassIntrospectionException) {
                throw (ClassIntrospectionException) t;
            }
            throw new ClassIntrospectionException(t);
        }
    }

    /**
     * Adds PCDATA areas.
     */
    public void addText(Object element, String text) 
        throws ClassIntrospectionException {
            
        if (addText == null) {
            String msg = "Class " + element.getClass().getName() +
                " doesn't support nested text elements";
            throw new ClassIntrospectionException(msg);
        }
        try {
            addText.invoke(element, new String[] {text});
        } catch (IllegalAccessException ie) {
            // impossible as getMethods should only return public methods
            throw new ClassIntrospectionException(ie);
        } catch (InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (t instanceof ClassIntrospectionException) {
                throw (ClassIntrospectionException) t;
            }
            throw new ClassIntrospectionException(t);
        }
    }

    public boolean supportsNestedElement(String elementName) {
        return nestedCreators.containsKey(elementName);
    }

    /**
     * Creates a named nested element.
     */
    public Object createElement(Object element, String elementName) 
         throws ClassIntrospectionException {
        NestedCreator nc = (NestedCreator) nestedCreators.get(elementName);
        if (nc == null) {
            String msg = "Class " + element.getClass().getName() +
                " doesn't support the nested \"" + elementName + "\" element";
            throw new ClassIntrospectionException(msg);
        }
        try {
            return nc.create(element);
        } catch (IllegalAccessException ie) {
            // impossible as getMethods should only return public methods
            throw new ClassIntrospectionException(ie);
        } catch (InstantiationException ine) {
            // impossible as getMethods should only return public methods
            throw new ClassIntrospectionException(ine);
        } catch (InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (t instanceof ClassIntrospectionException) {
                throw (ClassIntrospectionException) t;
            }
            throw new ClassIntrospectionException(t);
        }
    }

    /**
     * returns the type of a named nested element.
     */
    public Class getElementType(String elementName) 
        throws ClassIntrospectionException  {
        Class nt = (Class) nestedTypes.get(elementName);
        if (nt == null) {
            String msg = "Class " + bean.getName() +
                " doesn't support the nested \"" + elementName + "\" element";
            throw new ClassIntrospectionException(msg);
        }
        return nt;
    }

    /**
     * returns the type of a named attribute.
     */
    public Class getAttributeType(String attributeName) 
        throws ClassIntrospectionException {
        Class at = (Class) attributeTypes.get(attributeName);
        if (at == null) {
            String msg = "Class " + bean.getName() +
                " doesn't support the \"" + attributeName + "\" attribute";
            throw new ClassIntrospectionException(msg);
        }
        return at;
    }

    /**
     * Does the introspected class support PCDATA?
     */
    public boolean supportsCharacters() {
        return addText != null;
    }

    /**
     * Return all attribues supported by the introspected class.
     */
    public Enumeration getAttributes() {
        return attributeSetters.keys();
    }

    /**
     * Return all nested elements supported by the introspected class.
     */
    public Enumeration getNestedElements() {
        return nestedTypes.keys();
    }

    /**
     * Create a proper implementation of AttributeSetter for the given
     * attribute type.  
     */
    private AttributeSetter createAttributeSetter(final Method m,
                                                  final Class arg,
                                                  Map converters) {

        if (converters != null && converters.containsKey(arg)) {
            // we have a converter to use to convert the strign 
            // value of into something the set method expects.
            final Converter converter = (Converter)converters.get(arg);
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException, 
                               ClassIntrospectionException, ConversionException {
                        m.invoke(parent, new Object[] {converter.convert(value, arg)});
                    }
                };
        }
        // simplest case - setAttribute expects String
        else if (java.lang.String.class.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new String[] {value});
                    }
                };

        // now for the primitive types, use their wrappers
        } else if (java.lang.Character.class.equals(arg)
                   || java.lang.Character.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Character[] {new Character(value.charAt(0))});
                    }

                };
        } else if (java.lang.Byte.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Byte[] {new Byte(value)});
                    }

                };
        } else if (java.lang.Short.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Short[] {new Short(value)});
                    }

                };
        } else if (java.lang.Integer.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Integer[] {new Integer(value)});
                    }

                };
        } else if (java.lang.Long.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Long[] {new Long(value)});
                    }

                };
        } else if (java.lang.Float.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Float[] {new Float(value)});
                    }

                };
        } else if (java.lang.Double.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, new Double[] {new Double(value)});
                    }

                };

        } else if (java.lang.Boolean.class.equals(arg) 
                   || java.lang.Boolean.TYPE.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException {
                        m.invoke(parent, 
                                 new Boolean[] {new Boolean(toBoolean(value))});
                    }

                };

        // Class doesn't have a String constructor but a decent factory method
        } else if (java.lang.Class.class.equals(arg)) {
            return new AttributeSetter() {
                    public void set(Object parent, String value) 
                        throws InvocationTargetException, IllegalAccessException, ClassIntrospectionException {
                        try {
                            m.invoke(parent, new Class[] {Class.forName(value)});
                        } catch (ClassNotFoundException ce) {
                            throw new ClassIntrospectionException(ce);
                        }
                    }
                };
        // worst case. look for a public String constructor and use it
        } else {

            try {
                final Constructor c = 
                    arg.getConstructor(new Class[] {java.lang.String.class});

                return new AttributeSetter() {
                        public void set(Object parent, 
                                        String value) 
                            throws InvocationTargetException, IllegalAccessException, ClassIntrospectionException {
                            try {
                                m.invoke(parent, new Object[] {c.newInstance(new String[] {value})});
                            } catch (InstantiationException ie) {
                                throw new ClassIntrospectionException(ie);
                            }
                        }
                    };
                
            } catch (NoSuchMethodException nme) {
            }
        }
        
        return null;
    }

    /**
     * extract the name of a property from a method name - subtracting
     * a given prefix.  
     */
    private String getPropertyName(String methodName, String prefix) {
        int start = prefix.length();
        return methodName.substring(start).toLowerCase();
    }

    private interface NestedCreator {
        public Object create(Object parent) 
            throws InvocationTargetException, IllegalAccessException, InstantiationException;
    }
    private interface AttributeSetter {
        public void set(Object parent, String value)
            throws InvocationTargetException, IllegalAccessException, 
                   ClassIntrospectionException, ConversionException;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ConversionException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ConversionException.java
@@ -1,144 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;


 import java.io.*;

 /**
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ConversionException extends Exception {
    /** 
     * Exception that might have caused this one. 
     */
    private Throwable cause = null;

    /**
     * Constructs an exception with the given descriptive message.
     * @param msg Description of or information about the exception.
     */
    public ConversionException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public ConversionException(String msg, Throwable cause) {
        super(msg);
        this.cause = cause;
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     * @param cause Exception that might have caused this one.
     */
    public ConversionException(Throwable cause) {
        super(cause.toString());
        this.cause = cause;
    }

    /**
     * Returns the nested exception.
     *
     * @return the underlying exception
     */
    public Throwable getCause() {
        return cause;
    }

    /**
     * Print the stack trace to System.err
     */
    public void printStackTrace() {
        printStackTrace(System.err);
    }
    
    /**
     * Print the stack trace to the given PrintStream
     *
     * @param ps the PrintStream onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintStream ps) {
        synchronized (ps) {
            ps.println(this);
            if (cause != null) {
                ps.println("--- Nested Exception ---");
                cause.printStackTrace(ps);
            }
        }
    }
    
    /**
     * Print the stack trace to the given PrintWriter
     *
     * @param pw the PrintWriter onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintWriter pw) {
        synchronized (pw) {
            pw.println(this);
            if (cause != null) {
                pw.println("--- Nested Exception ---");
                cause.printStackTrace(pw);
            }
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/Converter.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/Converter.java
@@ -1,67 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 /**
 * Convert between a string and a data type
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public interface Converter {
    /**
     * Convert a string from the value given to an instance of the given type.
     */
    Object convert(String value, Class type) throws ConversionException;
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ConverterDefinition.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ConverterDefinition.java
@@ -1,144 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.util.*;
 import java.net.URL;

 /**
 * A Converter definition defines a class which will convert
 * a string into an instance of a particular type of class. Converters
 * are typically only needed when some context information is 
 * required to perform the conversion.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class ConverterDefinition {
    /** The URL of the library which defines this converter */
    private URL converterLibraryURL;
     
    /** The converter's class name */
    private String converterClassName;
    
    /** The converted class returned by this converter */
    private String targetClassName;
    
    /** The converter class loaded from the loader on demand.
     */
    private Class converterClass = null;
    
    /** The class to which this converter converts.
     */
    private Class targetClass = null;
    
    /** The converters's class loader. */
    private ClassLoader converterClassLoader;
    
    public ConverterDefinition(URL converterLibraryURL, String converterClassName, 
                               String targetClassName, ClassLoader converterClassLoader) {
        this.converterLibraryURL = converterLibraryURL;
        this.converterClassName = converterClassName;
        this.targetClassName = targetClassName;
        this.converterClassLoader = converterClassLoader;
    }
    
    /**
     * Get the name of the class that this converter will return.
     */
    public String getTargetClassName() {
        return targetClassName;
    }
    
    /**
     * Get the classname of the converter that is being defined.
     */
    public String getConverterClassName() {
        return converterClassName;
    }
    
    /**
     * Get the URL where this converter was defined.
     *
     * @returns a URL of the lib defintion file
     */
    public URL getLibraryURL() {
        return converterLibraryURL;
    }
    
    /**
     * Get the converter class
     *
     * @return a class object for this converter
     */
    public synchronized Class getConverterClass() throws ClassNotFoundException {
        if (converterClass == null) {
            converterClass = Class.forName(converterClassName, true, converterClassLoader);
        }
        return converterClass;
    }
    
    /**
     * Get the converter class
     *
     * @return a class object for this converter
     */
    public synchronized Class getTargetClass() throws ClassNotFoundException {
        if (targetClass == null) {
            targetClass = Class.forName(targetClassName, true, converterClassLoader);
        }
        return targetClass;
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionContext.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionContext.java
@@ -1,108 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * The ExecutionContext interface provides a task or apsect instance with access to the 
 * container-provided services. This is the only way to access the container.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class ExecutionContext {
    private ExecutionFrame frame = null;
    private BuildEventSupport eventSupport;
    private BuildElement buildElement;

    public ExecutionContext(ExecutionFrame frame, BuildEventSupport eventSupport, 
                            BuildElement buildElement) {
        this.frame = frame;
        this.eventSupport = eventSupport;
        this.buildElement = buildElement;
    }

    /**
     * Log a mesage with the give priority.
     *
     * @param the message to be logged.
     * @param msgLevel the message priority at which this message is to be logged.
     */
    public void log(String msg, int msgLevel) {
        eventSupport.fireMessageLogged(this, buildElement, msg, msgLevel);
    }

    public void setDataValue(String name, Object value) throws ExecutionException {
        frame.setDataValue(name, value);
    }

    public Object getDataValue(String name) throws ExecutionException {
        return frame.getDataValue(name);
    }

    /**
     * Replace ${} style constructions in the given value with the string value of
     * the corresponding data types.
     *
     * @param value the string to be scanned for property references.
     */
    public String replacePropertyRefs(String value) throws ExecutionException {
        return frame.replacePropertyRefs(value);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionException.java
@@ -1,125 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;

 import org.apache.ant.core.support.*;
 import java.io.*;

 /**
 * An ExecutiuonException indicates a problem during 
 * the execution of the build files tasks
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ExecutionException extends AntException {
    /**
     * Constructs an exception with the given descriptive message.
     *
     * @param msg Description of or information about the exception.
     */
    public ExecutionException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given descriptive message and a location
     * in a file.
     * @param msg Description of or information about the exception.
     * @param location Location in the project file where the error occured.
     */
    public ExecutionException(String msg, Location location) {
        super(msg, location);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     *
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public ExecutionException(String msg, Throwable cause) {
        super(msg, cause);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause and a location in a file.
     * @param msg Description of or information about the exception.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ExecutionException(String msg, Throwable cause, Location location) {
        super(msg, cause, location);
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     *
     * @param cause Exception that might have caused this one.
     */
    public ExecutionException(Throwable cause) {
        super(cause);
    }

    /**
     * Constructs an exception with the given exception as
     * a root cause and a location in a file.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ExecutionException(Throwable cause, Location location) {
        super(cause, location);
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionFrame.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/ExecutionFrame.java
@@ -1,920 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import org.apache.ant.core.types.*;

 import java.util.*;
 import java.net.*;

 /**
 * An ExecutionFrame is the state of a project during an execution. 
 * The ExecutionFrame contains the data values set by Ant tasks as
 * they are executed, including task definitions, property values, etc.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ExecutionFrame {
    /** State used in dependency analysis when a target's dependencies are being
        examined. */
    private static final String VISITING = "VISITING";

    /** State used in dependency analysis to indicate a target has been examined */
    private static final String VISITED = "VISITED";

    /** The Project that this execiton frame is processing */
    private Project project = null;
    
    /** The base URL for this frame. This is derived from the 
        Project's source URL and it's base attribute. */
    private URL baseURL = null;
    
    /** The imported frames of this frame. For each project imported by this frame's
        project, a corresponding ExecutionFrame is created. */
    private Map importedFrames = new HashMap();
    
    /** BuildEvent support used to fire events and manage listeners */
    private BuildEventSupport eventSupport = new BuildEventSupport();
    
    /** The context of this execution. This contains all data object's
        created by tasks that have been executed */
    private Map dataValues = new HashMap();
    
    /** Introspector objects used to configure Tasks from the Task models.*/
    private Map introspectors = new HashMap();
    
    /** The task defs that this frame will use to process tasks */
    private Map taskDefs = new HashMap();
    
    /** Type converters for this executionFrame. Converters are used when configuring
        Tasks to handle special type conversions. */
    private Map converters = new HashMap();
    
    /** The aspect handler active in this frame */
    private Map aspectHandlers = new HashMap();
    
    /** The namespace under which this execution frame lives in the hierarchical
        project namespace - null for the root namespace */
    private String namespace;
    
    /**
     * Construct an execution frame to process the given project model with 
     * the configuration represented by the libraries.
     *
     * @param project the model of the project to be built.
     * @param libraries an Array of AntLibrary objects containing the 
     *                  configuration of Ant for this build.
     *
     * @throws ConfigException when the project cannot be setup with the
     *                         given configuration
     */
    public ExecutionFrame(Project project, AntLibrary[] libraries) 
        throws ConfigException {
    
        this.namespace = null;
        setupFrame(project, libraries);
    }
    
    /**
     * Construct a subframe for managing a project imported into the main project.
     * @param project the model of the project to be built.
     * @param libraries an Array of AntLibrary objects containing the 
     *                  configuration of Ant for this build.
     * @param namespace the location of this project within the overall import
     *                  namespace.
     *
     * @throws ConfigException when the project cannot be setup with the
     *                         given configuration
     */     
    private ExecutionFrame(Project project, AntLibrary[] libraries, String namespace) 
        throws ConfigException {
    
        this.namespace = namespace;
        setupFrame(project, libraries);
    }
    

    /**
     * Set up the execution frame. 
     *
     * This method examines the project model and constructs the required
     * subframes to handle imported projects.
     * @param project the model of the project to be built.
     * @param libraries an Array of AntLibrary objects containing the 
     *                  configuration of Ant for this build.
     *
     * @throws ConfigException when the project cannot be setup with the
     *                         given configuration
     */
    private void setupFrame(Project project, AntLibrary[] libraries) 
        throws ConfigException {

        this.project = project;
        for (int i = 0; i < libraries.length; ++i) {
            addLibrary(libraries[i]);
        }

        try {        
            String base = project.getBase();
            if (base == null) {
                baseURL = project.getSourceURL();
            }
            else {
                base = base.trim();
                if (!base.endsWith("/")) {
                    base += "/";
                }
                baseURL = new URL(project.getSourceURL(), base);
            }            
        }
        catch (MalformedURLException e) {
            throw new ConfigException("Project's base value \"" + project.getBase() 
                                      + "\" is not valid", e, project.getLocation());
        }                                      
        
        for (Iterator i = project.getImportedProjectNames(); i.hasNext();) {
            String importName = (String)i.next();
            Project importedProject = project.getImportedProject(importName);
            String importNamespace 
                = namespace == null ? importName : namespace + ":" + importName;
            ExecutionFrame importedFrame 
                = new ExecutionFrame(importedProject, libraries, importNamespace);
            importedFrames.put(importName, importedFrame);
        }
    }

    /**
     * Add a configuration library to this execution frame. The library
     * will contain task definitions, converters, apsect handler definitions,
     * etc.
     *
     * @param library the configuration library to add to this frame.
     *
     * @throws ConfigException if the items in the library cannot be configured.
     */
    public void addLibrary(AntLibrary library) throws ConfigException {
        for (Iterator i = library.getTaskDefinitions(); i.hasNext(); ) {
            TaskDefinition taskDefinition = (TaskDefinition)i.next();
            addTaskDefinition(taskDefinition);
        }
        for (Iterator i = library.getConverterDefinitions(); i.hasNext(); ) {
            ConverterDefinition converterDef = (ConverterDefinition)i.next();
            addConverterDefinition(converterDef);
        }
        for (Iterator i = library.getAspectDefinitions(); i.hasNext(); ) {
            AspectDefinition aspectDef = (AspectDefinition)i.next();
            addAspectHandler(aspectDef);
        }
    }

    /**
     * Add a task definition to this execution frame
     *
     * @param taskDefinition the TaskDefinition to be added to the project.
     */
    public void addTaskDefinition(TaskDefinition taskDefinition) {
        String taskName = taskDefinition.getName();
        taskDefs.put(taskName, taskDefinition);
    }
    
    /**
     * Add a aspect handler definition to this execution frame
     *
     * @param taskDefinition the TaskDefinition to be added to the project.
     *
     * @throws ConfigException if the aspect handler cannot be created or configured.
     */
    public void addAspectHandler(AspectDefinition aspectDefinition) 
        throws ConfigException {
        String aspectPrefix = aspectDefinition.getAspectPrefix();
        try {
            Class aspectHandlerClass = aspectDefinition.getAspectHandlerClass();
            aspectHandlers.put(aspectPrefix, aspectHandlerClass);
        }    
        catch (ClassNotFoundException e) {
            throw new ConfigException("Unable to load aspect handler class for " 
                                      + aspectDefinition.getAspectHandlerClassName()
                                      + " in converter from " + aspectDefinition.getLibraryURL(),
                                      e);
        }
    }
    
    /**
     * Add a converter definition to this library.
     *
     * The converter is created immediately to handle conversions
     * when items are being configured. If the converter is an instance of
     * an AntConverter, the converter is configured with this execution
     * frame giving it the context it needs to resolve items relative to the
     * project's base, etc.
     *
     * @param converterDef the converter definition to load
     *
     * @throws ConfigException if the converter cannot be created or configured.
     */
    public void addConverterDefinition(ConverterDefinition converterDef) throws ConfigException {
        boolean targetLoaded = false;
        try {
            Class targetClass = converterDef.getTargetClass();
            targetLoaded = false;
            Class converterClass = converterDef.getConverterClass();
            Converter converter = (AntConverter)converterClass.newInstance();
            if (converter instanceof AntConverter) {
                ((AntConverter)converter).init(this);
            }
            converters.put(targetClass, converter);
        }
        catch (ClassNotFoundException e) {
            if (targetLoaded) {
                throw new ConfigException("Unable to load converter class for " 
                                          + converterDef.getConverterClassName()
                                          + " in converter from " + converterDef.getLibraryURL(),
                                          e);
            }
            else {
                throw new ConfigException("Unable to load target class " 
                                          + converterDef.getTargetClassName()
                                          + " in converter from " + converterDef.getLibraryURL(),
                                          e);
            }
        }
        catch (InstantiationException e) {
            throw new ConfigException("Unable to instantiate converter class " 
                                      + converterDef.getTargetClassName()
                                      + " in converter from " + converterDef.getLibraryURL(),
                                      e);
        }
        catch (IllegalAccessException e) {
            throw new ConfigException("Unable to access converter class " 
                                      + converterDef.getTargetClassName()
                                      + " in converter from " + converterDef.getLibraryURL(),
                                      e);
        }
    }

    
    /**
     * Get the bae URL of this frame. This will either be specified by the project's
     * base attribute or be derived implicitly from the project's location.
     */
    public URL getBaseURL() {
        return baseURL;
    }


    public void addBuildListener(BuildListener listener) {
        for (Iterator i = getImportedFrames(); i.hasNext(); ) {
            ExecutionFrame subFrame = (ExecutionFrame)i.next();
            subFrame.addBuildListener(listener);
        }
        eventSupport.addBuildListener(listener);
    }
    
    public void removeBuildListener(BuildListener listener) {
        for (Iterator i = getImportedFrames(); i.hasNext(); ) {
            ExecutionFrame subFrame = (ExecutionFrame)i.next();
            subFrame.removeBuildListener(listener);
        }
        eventSupport.removeBuildListener(listener);
    }

    /**
     * Get the project associated with this execution frame.
     *
     * @return the project associated iwth this execution frame.
     */
    public Project getProject() {
        return project;
    }
    

    /**
     * Get the names of the frames representing imported projects.
     *
     * @return an iterator which returns the names of the imported frames.
     */
    public Iterator getImportedFrameNames() {
        return importedFrames.keySet().iterator();
    }
    

    /**
     * Get the frames representing imported projects.
     *
     * @return an iterator which returns the imported ExeuctionFrames..
     */
    public Iterator getImportedFrames() {
        return importedFrames.values().iterator();
    }
    
    /**
     * Get an imported frame by name
     *
     * @param importName the name under which the frame was imported.
     *
     * @return the ExecutionFrame asscociated with the given import name or null 
     *         if there is no such project.
     */
    public ExecutionFrame getImportedFrame(String importName) {
        return (ExecutionFrame)importedFrames.get(importName);
    }
    
    /**
     * Get the location of this frame in the namespace hierarchy
     *
     * @return the location of this frame within the project import
     *         namespace hierarchy.
     */
    public String getNamespace() {
        return namespace;
    }
    
    /**
     * Get the fully qualified name of something with respect to this 
     * execution frame.
     * 
     * @param name the unqualified name.
     * 
     * @return the fully qualified version of the given name
     */
    public String getQualifiedName(String name) {
        return namespace == null ? name : namespace + ":" + name;
    }
    
    /**
     * Execute the given target's tasks
     *
     * @param the name of the target within this frame that is to be executed.
     */
    public void executeTargetTasks(String targetName) throws ExecutionException, ConfigException {
        Target target = project.getTarget(targetName);
        try {
            Iterator taskIterator = target.getTasks();
            eventSupport.fireTargetStarted(this, target);
            executeTasks(taskIterator);
            eventSupport.fireTargetFinished(this, target, null);
        }
        catch (RuntimeException e) {
            eventSupport.fireTargetFinished(this, target, e);
            throw e;
        }
    }
    
    /**
     * Initialize the frame by executing the project level tasks if any
     */
    public void initialize() throws ExecutionException, ConfigException {
        for (Iterator i = getImportedFrames(); i.hasNext(); ) {
            ExecutionFrame subFrame = (ExecutionFrame)i.next();
            subFrame.initialize();
        }
        Iterator taskIterator = project.getTasks();
        executeTasks(taskIterator);
    }

    public void fillinDependencyOrder(String targetName, List dependencyOrder, 
                                      Map state, Stack visiting) throws ConfigException {
        String fullTargetName = getQualifiedName(targetName); 
        if (state.get(fullTargetName) == VISITED) {
            return;
        }
        Target target = getProject().getTarget(targetName);                                       
        if (target == null) {
            StringBuffer sb = new StringBuffer("Target `");
            sb.append(targetName);
            sb.append("' does not exist in this project. ");
            if (!visiting.empty()) {
                String parent = (String)visiting.peek();
                sb.append("It is used from target `");
                sb.append(parent);
                sb.append("'.");
            }

            throw new ConfigException(new String(sb), getProject().getLocation());
        }
        
        state.put(fullTargetName, VISITING);
        visiting.push(fullTargetName);
        for (Iterator i = target.getDependencies(); i.hasNext(); ) {
            String dependency = (String)i.next();
            try {
                ExecutionFrame dependencyFrame = getRelativeFrame(dependency);
                if (dependencyFrame == null) {
                    StringBuffer sb = new StringBuffer("Target `");
                    sb.append(dependency);
                    sb.append("' does not exist in this project. ");
                    throw new ConfigException(new String(sb), target.getLocation());
                }
                
                String fullyQualifiedName = getQualifiedName(dependency);
                String dependencyState = (String)state.get(fullyQualifiedName);
                if (dependencyState == null) {
                    dependencyFrame.fillinDependencyOrder(getNameInFrame(dependency), dependencyOrder, 
                                                          state, visiting);
                }
                else if (dependencyState == VISITING) {
                    String circleDescription
                        = getCircularDesc(dependency, visiting);
                    throw new ConfigException(circleDescription, target.getLocation());
                }
            }
            catch (ExecutionException e) {
                throw new ConfigException(e.getMessage(), e, target.getLocation());
            }
        }
        
        state.put(fullTargetName, VISITED);
        String poppedNode = (String)visiting.pop();
        if (poppedNode != fullTargetName) {
            throw new ConfigException("Problem determining dependencies " + 
                                        " - expecting '" + fullTargetName + 
                                        "' but got '" + poppedNode + "'");
        }
        dependencyOrder.add(fullTargetName);                                        
    }
                                
    private String getCircularDesc(String end, Stack visitingNodes) {
        StringBuffer sb = new StringBuffer("Circular dependency: ");
        sb.append(end);
        String c;
        do {
            c = (String)visitingNodes.pop();
            sb.append(" <- ");
            sb.append(c);
        } while(!c.equals(end));
        return new String(sb);
    }

    /**
     * Check whether the targets in this frame and its subframes are OK
     */
    public void checkTargets(List dependencyOrder, Map state, Stack visiting) 
            throws ConfigException {
        // get the targets and just iterate through them.
        for (Iterator i = getProject().getTargets(); i.hasNext();) {
            Target target = (Target)i.next();
            fillinDependencyOrder(target.getName(),
                                  dependencyOrder, state, visiting);
        }
        
        // Now do the subframes.
        for (Iterator i = getImportedFrames(); i.hasNext();) {
            ExecutionFrame importedFrame = (ExecutionFrame)i.next();
            importedFrame.checkTargets(dependencyOrder, state, visiting);
        }
    }

        
    /**
     * Create a Task and configure it according to the given model.
     */        
    private Task configureTask(TaskElement model) 
        throws ConfigException, ExecutionException {

        String taskType = model.getType();
        TaskDefinition taskDefinition = (TaskDefinition)taskDefs.get(taskType);
        if (taskDefinition == null) {
            throw new ConfigException("There is no defintion for tasks of type <" 
                                      + taskType + ">", model.getLocation());
        }
        
        try {
            Class elementClass = taskDefinition.getExecutionTaskClass();
            Object element = elementClass.newInstance();
            Task task = null;
            if (element instanceof Task) {
                // create a Task context for the Task
                task = (Task)element;
            }
            else {
                task = new TaskAdapter(taskType, element);
            }
            
            configureElement(element, model);

            return task;
        }
        catch (ClassNotFoundException e) {
            throw new ConfigException("Execution class " + taskDefinition.getTaskClassName()
                                         + " was not found", e, model.getLocation());
        }
        catch (InstantiationException e) {
            throw new ConfigException("Unable to instantiate execution class "
                                          + taskDefinition.getTaskClassName(), 
                                          e, model.getLocation());
        }
        catch (IllegalAccessException e) {
            throw new ConfigException("Unable to access execution class "
                                          + taskDefinition.getTaskClassName(), 
                                          e, model.getLocation());
        }
    }        

    private List getActiveAspects(BuildElement model) 
            throws ConfigException, ExecutionException, 
                   ClassIntrospectionException, ConversionException {
        List activeAspects = new ArrayList();
        for (Iterator i = model.getAspectNames(); i.hasNext();) {
            String aspectPrefix = (String)i.next();
            Class aspectHandlerClass = (Class)aspectHandlers.get(aspectPrefix);
            if (aspectHandlerClass != null) {
                try {
                    AspectHandler aspectHandler 
                        = (AspectHandler)aspectHandlerClass.newInstance();
                    ClassIntrospector introspector = getIntrospector(aspectHandlerClass);
                    
                    ExecutionContext context = new ExecutionContext(this, eventSupport, model);
                    aspectHandler.setAspectContext(context);
                    
                    Map aspectAttributes = model.getAspectAttributes(aspectPrefix);
                    for (Iterator j = aspectAttributes.keySet().iterator(); j.hasNext();) {
                        String attributeName = (String)j.next();
                        String attributeValue = (String)aspectAttributes.get(attributeName);
                        introspector.setAttribute(aspectHandler, attributeName, 
                                                  replacePropertyRefs(attributeValue));
                    }
                    activeAspects.add(aspectHandler);
                }
                catch (InstantiationException e) {
                    throw new ConfigException("Unable to instantiate aspect handler class " 
                                              + aspectHandlerClass,
                                              e);
                }
                catch (IllegalAccessException e) {
                    throw new ConfigException("Unable to access aspect handler class " 
                                              + aspectHandlerClass,
                                              e);
                }
            }
        }                                                          
        return activeAspects;
    }
    

    /**
     * Configure an element according to the given model.
     */   
    private void configureElement(Object element, TaskElement model) 
        throws ExecutionException, ConfigException {
        
        if (element instanceof Task) {
            Task task = (Task)element;
            ExecutionContext context = new ExecutionContext(this, eventSupport, model);
            task.setTaskContext(context);
        }
        try {
            ClassIntrospector introspector = getIntrospector(element.getClass());
                
            List aspects = getActiveAspects(model);
            for (Iterator i = aspects.iterator(); i.hasNext(); ) {
                AspectHandler aspectHandler = (AspectHandler)i.next();
                aspectHandler.beforeConfigElement(element);
            }
            
            // start by setting the attributes of this element
            for (Iterator i = model.getAttributeNames(); i.hasNext();) {
                String attributeName = (String)i.next();
                String attributeValue = model.getAttributeValue(attributeName);
                introspector.setAttribute(element, attributeName, 
                                          replacePropertyRefs(attributeValue));
            }
            
            String modelText = model.getText().trim();
            if (modelText.length() != 0) {
                introspector.addText(element, replacePropertyRefs(modelText));
            }

            // now do the nested elements
            for (Iterator i = model.getNestedElements(); i.hasNext();) {
                TaskElement nestedElementModel = (TaskElement)i.next();
                if (element instanceof TaskContainer &&
                    !introspector.supportsNestedElement(nestedElementModel.getType())) {
                    
                    Task nestedTask = configureTask(nestedElementModel);
                    TaskContainer container = (TaskContainer)element;
                    container.addTask(nestedTask);
                }
                else {                        
                    Object nestedElement 
                        = introspector.createElement(element, nestedElementModel.getType());
                    configureElement(nestedElement, nestedElementModel);
                }                    
            }
            for (Iterator i = aspects.iterator(); i.hasNext(); ) {
                AspectHandler aspectHandler = (AspectHandler)i.next();
                aspectHandler.afterConfigElement(element);
            }
        }
        catch (ClassIntrospectionException e) {
            throw new ExecutionException(e, model.getLocation());
        }
        catch (ConversionException e) {
            throw new ExecutionException(e, model.getLocation());
        }
    }

    /**
     * Run the tasks returned by the give iterator
     *
     * @param taskIterator the iterator giving the tasks to execute
     */
    public void executeTasks(Iterator taskIterator) throws ExecutionException, ConfigException {
        TaskElement task = null;
        try {
            while (taskIterator.hasNext()) {
                task = (TaskElement)taskIterator.next();
                try {
                    Task configuredTask = configureTask(task);
                    eventSupport.fireTaskStarted(this, task);
                    configuredTask.execute();
                }
                catch (ExecutionException e) {
                    if (e.getLocation() == null || e.getLocation() == Location.UNKNOWN_LOCATION) {
                        e.setLocation(task.getLocation());
                    }
                    throw e;
                }
                catch (ConfigException e) {
                    if (e.getLocation() == null || e.getLocation() == Location.UNKNOWN_LOCATION) {
                        e.setLocation(task.getLocation());
                    }
                    throw e;
                }
                eventSupport.fireTaskFinished(this, task, null);
            }
        }
        catch (RuntimeException e) {
            eventSupport.fireTaskFinished(this, task, e);
            throw e;
        }
    }        

    private ClassIntrospector getIntrospector(Class c) {
        if (introspectors.containsKey(c)) {
            return (ClassIntrospector)introspectors.get(c);
        }
        ClassIntrospector introspector = new ClassIntrospector(c, converters);
        introspectors.put(c, introspector);
        return introspector;
    }
                            
    /**
     * Replace ${} style constructions in the given value with the string value of
     * the corresponding data types.
     *
     * @param value the string to be scanned for property references.
     */
    public String replacePropertyRefs(String value) throws ExecutionException {
        if (value == null) {
            return null;
        }

        List fragments = new ArrayList();
        List propertyRefs = new ArrayList();
        parsePropertyString(value, fragments, propertyRefs);

        StringBuffer sb = new StringBuffer();
        Iterator i = fragments.iterator();
        Iterator j = propertyRefs.iterator();
        while (i.hasNext()) {
            String fragment = (String)i.next();
            if (fragment == null) {
                String propertyName = (String)j.next();
                if (!isDataValueSet(propertyName)) {
                    throw new ExecutionException("Property " + propertyName + " has not been set");
                }
                fragment = getDataValue(propertyName).toString();
            }
            sb.append(fragment);
        }                        
        
        return sb.toString();
    }
    

    /**
     * This method will parse a string containing ${value} style 
     * property values into two list. The first list is a collection
     * of text fragments, while the other is a set of string property names
     * null entries in the first list indicate a property reference from the
     * second list.
     */
    static public void parsePropertyString(String value, List fragments, List propertyRefs) 
        throws ExecutionException {
        int prev = 0;
        int pos;
        while ((pos = value.indexOf("$", prev)) >= 0) {
            if (pos > 0) {
                fragments.add(value.substring(prev, pos));
            }

            if( pos == (value.length() - 1)) {
                fragments.add("$");
                prev = pos + 1;
            }
            else if (value.charAt(pos + 1) != '{' ) {
                fragments.add(value.substring(pos + 1, pos + 2));
                prev = pos + 2;
            } else {
                int endName = value.indexOf('}', pos);
                if (endName < 0) {
                    throw new ExecutionException("Syntax error in property: " 
                                                 + value );
                }
                String propertyName = value.substring(pos + 2, endName);
                fragments.add(null);
                propertyRefs.add(propertyName);
                prev = endName + 1;
            }
        }

        if (prev < value.length()) {
            fragments.add(value.substring(prev));
        }
    }

    /**
     * Given a name of an object, get the frame relative from this frame that
     * contains that object.
     */
    public ExecutionFrame getRelativeFrame(String name) throws ExecutionException {
        int index = name.lastIndexOf(":");
        if (index == -1) {
            return this;
        }
        
        ExecutionFrame currentFrame = this;
        String relativeFrameName = name.substring(0, index);
        StringTokenizer tokenizer = new StringTokenizer(relativeFrameName, ":");
        while (tokenizer.hasMoreTokens()) {
            String frameName = tokenizer.nextToken();
            currentFrame = currentFrame.getImportedFrame(frameName);
            if (currentFrame == null) {
                throw new ExecutionException("The project " + frameName + " in " 
                                             + name + " was not found");
            }
        }
        
        return currentFrame;
    }

    /**
     * Get the name of an object in its frame
     */
    public String getNameInFrame(String name) {
        int index = name.lastIndexOf(":");
        if (index == -1) {
            return name;
        }
        return name.substring(index+1);
    }

    /**
     * Set a value in this frame or any of its imported frames
     */
    public void setDataValue(String name, Object value) throws ExecutionException {
        ExecutionFrame frame = getRelativeFrame(name);
        frame.setDirectDataValue(getNameInFrame(name), value);
    }
    
    /**
     * Get a value from this frame or any imported frame
     */
    public Object getDataValue(String name) throws ExecutionException {
        ExecutionFrame frame = getRelativeFrame(name);
        return frame.getDirectDataValue(getNameInFrame(name));
    }
    
    /**
     * Set a value in this frame only
     */
    private void setDirectDataValue(String name, Object value) {
        dataValues.put(name, value);
    }
    
    /**
     * Get a value from this frame
     */
    private Object getDirectDataValue(String name) {
        return dataValues.get(name);
    }

    /**
     * Indicate if a data value has been set
     */
    public boolean isDataValueSet(String name) throws ExecutionException {
        ExecutionFrame frame = getRelativeFrame(name);
        return frame.isDirectDataValueSet(getNameInFrame(name));
    }
        
    /**
     * Indicate if a data value has been set in this frame
     */
    private boolean isDirectDataValueSet(String name) {
        return dataValues.containsKey(name);
    }

    public void runBuild(List targetNames) throws AntException {
        Throwable buildFailureCause = null;
        try {
            eventSupport.fireBuildStarted(this, project);
            initialize();

            if (targetNames.isEmpty()) {
                // we just execute the default target if any
                String defaultTarget = project.getDefaultTarget();
                if (defaultTarget != null) {
                    executeTarget(defaultTarget);
                }
            }
            else {
                for (Iterator i = targetNames.iterator(); i.hasNext();) {
                    executeTarget((String)i.next());
                }
            }
            eventSupport.fireBuildFinished(this, project, null);
        }
        catch (RuntimeException e) {
            buildFailureCause = e;
            throw e;
        }
        catch (AntException e) {
            buildFailureCause = e;
            throw e;
        }
        finally {
            eventSupport.fireBuildFinished(this, project, buildFailureCause);
        }
    }

    public void executeTarget(String targetName) throws ExecutionException, ConfigException {
        // to execute a target we must determine its dependencies and 
        // execute them in order.
        Map state = new HashMap();
        Stack visiting = new Stack();
        List dependencyOrder = new ArrayList();
        ExecutionFrame startingFrame = getRelativeFrame(targetName);
        startingFrame.fillinDependencyOrder(getNameInFrame(targetName),
                                            dependencyOrder, state, visiting);

        // Now tell each frame to execute the targets required
        for (Iterator i = dependencyOrder.iterator(); i.hasNext();) {
            String fullTargetName = (String)i.next();
            ExecutionFrame frame = getRelativeFrame(fullTargetName);
            frame.executeTargetTasks(getNameInFrame(fullTargetName));
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/InputProvider.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/InputProvider.java
@@ -1,77 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.execution;

 /*
 * An input provider is an object which is provided to Ant's core
 * execution system to provide input from the user. Typically command
 * line based clients will request input from the console whilst 
 * GUI clients may pop up an input dialog. Unattended operation may
 * be able to source input from some form of script.
 */
 public interface InputProvider {
    /** 
     * Request input from the user
     *
     * @param prompt a string which is used to prompt the user for input.
     * @param defaultInput the default value initially supplied to the user
     * @param timeout a timeout in milliseconds which some clients may use
     *        to either accept the default or to fail.
     *
     * @return a string of the user's input if the user provided any.
     *
     * @throws ExecutionException if the no input could be obtained from the user
     */
    String userInput(String prompt, String defaultInput) throws ExecutionException;
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/Task.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/Task.java
@@ -1,73 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * A task is a top level element in the buidl which will be processed. Ant
 * currently handles two types of tasks - DataType tasks and execution tasks.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public interface Task {
    void setTaskContext(ExecutionContext context);
    
    void execute() throws ExecutionException;
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/TaskAdapter.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/TaskAdapter.java
@@ -1,100 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.lang.reflect.*;
 import java.util.*;

 /**
 * Use introspection to "adapt" an arbitrary Bean ( not extending Task, but with similar
 * patterns).
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class TaskAdapter extends AbstractTask {

    /**
     * The real object that is performing the work
     */
    private Object worker;

    private Method executeMethod = null;

    public TaskAdapter(String taskType, Object worker) 
        throws ExecutionException {
        this.worker = worker;
        try {
            Class workerClass = worker.getClass();
            executeMethod = workerClass.getMethod("execute", new Class[0]);
            if (executeMethod == null) {
                throw new ExecutionException("No execute method in the class for the <"
                                             + taskType + "> task.");
            }
        }
        catch (NoSuchMethodException e) {
            throw new ExecutionException(e);
        }
    }
                                                             

    public void execute() throws ExecutionException {
        try {
            executeMethod.invoke(worker, null);
        }
        catch( Exception ex ) {
            throw new ExecutionException(ex);
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/execution/TaskContainer.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/TaskContainer.java
@@ -1,72 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.util.*;
 import java.net.URL;

 /**
 * A TaskContainer is an object which can contain and manage 
 * ExecutionTasks.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public interface TaskContainer {
    /**
     * Add a task to the container.
     */
    void addTask(Task task) throws ExecutionException;
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/execution/TaskDefinition.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/execution/TaskDefinition.java
@@ -1,125 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.execution;

 import java.util.*;
 import java.net.URL;

 /**
 * A Task definition provides the information necessary to execute
 * a task implementation.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class TaskDefinition {
    /** The URL of the library which defines this task */
    private URL taskLibraryURL;
     
    /** The task's name */
    private String taskName;
    
    /** The task's class */
    private String taskClassName;
    
    /** The task's class loaded from the loader on demand. */
    private Class taskClass = null;
    
    /** The task's class loader. */
    private ClassLoader taskClassLoader;
    
    public TaskDefinition(URL taskLibraryURL, String taskName, String taskClassName, 
                          ClassLoader taskClassLoader) {
        this.taskLibraryURL = taskLibraryURL;
        this.taskName = taskName;
        this.taskClassName = taskClassName;
        this.taskClassLoader = taskClassLoader;
    }
    
    /**
     * Get the name of the task that is being defined.
     */
    public String getName() {
        return taskName;
    }
    
    /**
     * Get the classname of the task that is being defined.
     */
    public String getTaskClassName() {
        return taskClassName;
    }
    
    /**
     * Get the URL where this task was defined.
     *
     * @returns a URL of the lib defintion file
     */
    public URL getLibraryURL() {
        return taskLibraryURL;
    }
    
    /**
     * Get the task class for this task
     *
     * @return a class object for this task
     */
    public synchronized Class getExecutionTaskClass() throws ClassNotFoundException {
        if (taskClass == null) {
            taskClass = Class.forName(taskClassName, true, taskClassLoader);
        }
        return taskClass;
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/model/BuildElement.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/model/BuildElement.java
@@ -1,157 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.model;

 import java.util.*;
 import org.apache.ant.core.support.*;

 /**
 * A BuildElement is an element of a build file and has a location
 * within that file.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class BuildElement {
    /** The aspects defined for this element. */
    private Map aspectMaps;

    /** The location of this element */
    private Location location;
    
    /** A comment associated with this element, if any */
    private String comment;
    
    /**
     * Create a build element giving its location.
     *
     * @param location identifies where this element is defined
     */
    public BuildElement(Location location) {
        this.location = location;
    }
    
    /**
     * Get the location of the source where this element is defined
     *
     * @return the element's location
     */
    public Location getLocation() {
        return location;
    }
    
    /**
     * Set a comment associated with this element
     *
     * @param comment the comment to be associated with this element.
     */
    public void setComment(String comment) {
        this.comment = comment;
    }
    
    /**
     * Get the comment associated with this element.
     *
     * @return the element's comment which may be null.
     */
    public String getComment() {
        return comment;
    }
    
    /**
     * Set the aspects of this element
     *
     * @param aspects a Map of apects that relate to this build element.
     */
    public void setAspects(Map aspects) {
        aspectMaps = new HashMap();
        for (Iterator i = aspects.keySet().iterator(); i.hasNext(); ) {
            String aspectName = (String)i.next();
            int separator = aspectName.indexOf(":");
            if (separator != -1) {
                String prefix = aspectName.substring(0, separator);
                String name = aspectName.substring(separator + 1);
                if (prefix.length() != 0 && name.length() != 0) {
                    Map prefixMap = (Map)aspectMaps.get(prefix);
                    if (prefixMap == null) {
                        prefixMap = new HashMap();
                        aspectMaps.put(prefix, prefixMap);
                    }
                    prefixMap.put(name, aspects.get(aspectName));
                }
            }
        }
    }
    
    /**
     * Get an iterator on the aspects which have been given values on this element
     * 
     * @return an iterator of Strings , being the aspects which have been given values on
     * this element.
     */
    public Iterator getAspectNames() {
        return aspectMaps.keySet().iterator();
    }
    
    /**
     * Get the set of attribute values related to the given aspect
     *
     * @param apsectPrefix the prefix used to identify the prefix.
     *
     * @return a map of the attribute values for the given aspect.
     */
    public Map getAspectAttributes(String aspectPrefix) {
        return (Map)aspectMaps.get(aspectPrefix);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/model/Project.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/model/Project.java
@@ -1,267 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.model;

 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * A project is a collection of targets and global tasks. A project
 * may reference objects in other projects using named references of 
 * the form project:object
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class Project extends BuildElement {
    /** The default target in this project. */
    private String defaultTarget = null;

    /** The base URL of this project. Relative locations are relative to this base.*/
    private String base;
    
    /**
     * The name of this project when referenced by a script within this project. 
     */
    private String name;
    
    /**
     * These are the targets which belong to the project. They
     * will have interdependencies which are used to determine
     * which targets need to be executed before a given target.
     */
    private Map targets = new HashMap();
    
    /**
     * The global tasks for this project. These are the tasks that will get executed
     * whenever an execution context is associated with this project.
     */
    private List tasks = new ArrayList();
    
    /**
     * The projects imported into this project. Each imported project is
     * given a name which is used to identify access to that project's
     * elements.
     */
    private Map importedProjects = new HashMap(); 

    /**
     * The URL where the project is defined.
     * 
     */
    private URL sourceURL;

    /**
     * Create a Project
     *
     * @param sourceURL the URL where the project is defined.
     * @param location the location of this element within the source.
     */
    public Project(URL sourceURL, Location location) {
        super(location);
        this.sourceURL = sourceURL;
    }

    /**
     * Get the URL where this project is defined
     *
     * @return the project source URL
     */
    public URL getSourceURL() {
        return sourceURL;
    }
        
    /**
     * Add a target to the project.
     *
     * @param target the Target to be added
     * 
     * @throws ProjectModelException if a target with the same name already exists.
     */
    public void addTarget(Target target) throws ProjectModelException {
        if (targets.containsKey(target.getName())) {
            throw new ProjectModelException("A target with name '" + target.getName() +
                                            "' has already been defined in this project", 
                                            target.getLocation());
        }                                            
        targets.put(target.getName(), target);
    }
    
    /**
     * Set the defautl target of this project.
     *
     * @param defaultTarget the name of the defaultTarget of this project.
     */
    public void setDefaultTarget(String defaultTarget) {
        this.defaultTarget = defaultTarget;
    }
    
    /**
     * Get the Project's default Target, if any
     *
     * @return the project's defautl target or null if there is no default.
     */
    public String getDefaultTarget() {
        return defaultTarget;
    }

    /**
     * Set the base URL for this project.
     *
     * @param base the baseURL for this project.
     */
    public void setBase(String base) {
        this.base = base;
    }
        
    /**
     * Get the base URL for this project.
     *
     * @return the baseURL for this project as a string.
     */
    public String getBase() {
        return base;
    }
        
    /**
     * Set the name of this project.
     *
     * @param name the name for this project.
     */
    public void setName(String name) {
        this.name = name;
    }
        

    /**
     * Add a task to the list of global tasks for this project.
     *
     * @param task a task to be executed when an execution context
     * is associated with the Project (a non-target task)
     */
    public void addTask(TaskElement task) {
        tasks.add(task);
    }
    
    /**
     * Import a project to be referenced using the given name.
     *
     * @param importName the name under which the project will be referenced.
     * @param project the imported project.
     *
     * @throws ProjectModelException if an existing project has already 
     *                               been imported with that name.
     */
    public void importProject(String importName, Project project) 
            throws ProjectModelException {
        if (importedProjects.containsKey(importName)) {
            throw new ProjectModelException("A project has already been imported with name '" + 
                                            importName + "'");
        }
        importedProjects.put(importName, project);
    }
    
    /**
     * Get the targets in this project.
     *
     * @return an iterator returning Target objects.
     */
    public Iterator getTargets() {
        return targets.values().iterator();
    }
    
    /**
     * Get the target with the given name
     *
     * @param targetName the name of the desired target.
     *
     * @return the target with the given name or null if there is no
     *         such target.
     */
    public Target getTarget(String targetName) {
        return (Target)targets.get(targetName);
    }
    
    /**
     * Get the name sof the imported projects.
     *
     * @return an iterator which returns the name sof the imported projects.
     */
    public Iterator getImportedProjectNames() {
        return importedProjects.keySet().iterator();
    }
    
    /**
     * Get an imported project by name
     *
     * @param importName the name under which the project was imported.
     *
     * @return the project asscociated with the given import name or null 
     *         if there is no such project.
     */
    public Project getImportedProject(String importName) {
        return (Project)importedProjects.get(importName);
    }
    
    /**
     * Get the initialisation tasks for this project
     *
     * @return an iterator over the set of tasks for this project.
     */
    public Iterator getTasks() {
        return tasks.iterator();
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/model/ProjectModelException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/model/ProjectModelException.java
@@ -1,129 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.model;

 import org.apache.ant.core.support.*;
 import java.util.*;
 import java.net.URL;

 /**
 * A project model exception is thrown when an operation is attempted
 * which would violate the integrity of the Project/Target/Task object
 * model
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class ProjectModelException extends AntException {
    /**
     * Constructs an exception with the given descriptive message.
     *
     * @param msg Description of or information about the exception.
     */
    public ProjectModelException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given descriptive message and a location
     * in a file.
     * @param msg Description of or information about the exception.
     * @param location Location in the project file where the error occured.
     */
    public ProjectModelException(String msg, Location location) {
        super(msg, location);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     *
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public ProjectModelException(String msg, Throwable cause) {
        super(msg, cause);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause and a location in a file.
     * @param msg Description of or information about the exception.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ProjectModelException(String msg, Throwable cause, Location location) {
        super(msg, cause, location);
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     *
     * @param cause Exception that might have caused this one.
     */
    public ProjectModelException(Throwable cause) {
        super(cause);
    }

    /**
     * Constructs an exception with the given exception as
     * a root cause and a location in a file.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ProjectModelException(Throwable cause, Location location) {
        super(cause, location);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/model/Target.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/model/Target.java
@@ -1,136 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.model;

 import java.util.*;
 import org.apache.ant.core.support.*;

 /**
 * A Target is a collection of tasks. It may have
 * dependencies on other targets
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class Target extends BuildElement {
    private List dependencies = new ArrayList();
    
    /**
     * This target's list of tasks
     */
    private List tasks = new ArrayList();
    
    /**
     * The target's name.
     */
    private String name;
    
    /**
     * Construct the target, given its name
     *
     * @param location the location of the element
     * @param name the target's name.
     */
    public Target(Location location, String name) {
        super(location);
        this.name = name;
    }
    
    /**
     * Get this target's name.
     *
     * @return the target's name.
     */
    public String getName() {
        return name;
    }

    /**
     * Add a task to this target
     *
     * @param task the task to be added to the target.
     */
    public void addTask(TaskElement task) {
        tasks.add(task);
    }
    
    /**
     * Add a dependency to this target
     *
     * @param dependency the name of a target upon which this target 
     *                   depends
     */
    public void addDependency(String dependency) {
        dependencies.add(dependency);
    }

    /**
     * Get this target's dependencies.
     *   
     * @return an iterator over the target's dependencies.
     */
    public Iterator getDependencies() {
        return dependencies.iterator();
    }
    
    /**
     * Get the tasks for this target
     *
     * @return an iterator over the set of tasks for this target.
     */
    public Iterator getTasks() {
        return tasks.iterator();
    }
    
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/model/TaskElement.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/model/TaskElement.java
@@ -1,169 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.model;

 import java.util.*;
 import org.apache.ant.core.support.*;

 /**
 * A TaskElement is a holder for Task configuration information.
 * TaskElements may be grouped into a hierarchy to capture
 * any level of Task element nesting.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class TaskElement extends BuildElement {
    /** The attributes of this task element */
    private Map attributes = new HashMap();

    /**
     * The task's name or type
     */
    private String type;
    
    /**
     * The task elements that make up this task.
     */
    private List taskElements = new ArrayList();
    
    /** The content (text) of this task */
    private String text = "";
    
    /**
     * Create a Task of the given type
     *
     * @param location the location of the element
     * @param type the task element's type
     */
    public TaskElement(Location location, String type) {
        super(location);
        this.type = type;
    }
    
    /**
     * Add text to this task.
     *
     * @param text the element text to add.
     */
    public void addText(String text) {
        this.text += text;
    }

    /**
     * Get the text of this task
     *
     * @return the task's text.
     */
     public String getText() {
        return text;
    }
     
    /**
     * Add a task element to this task
     * 
     * @param taskElement the task element to be added.
     */
    public void addTaskElement(TaskElement taskElement) {
        taskElements.add(taskElement);
    }

    /**
     * Get an iterator over this element's nexted elements
     *
     * @return an iterator which provides TaskElement instances
     */
    public Iterator getNestedElements() {
        return taskElements.iterator();
    }
    
    /**
     * Get the type of this task element
     *
     * @return the element's type
     */
    public String getType() {
        return type;
    }

    /**
     * Add an attribute to this task element
     *
     * @param attributeName the name of the attribute
     * @param attributeValue the attribute's value.
     */
    public void addAttribute(String attributeName, String attributeValue) {
        attributes.put(attributeName, attributeValue);
    }
    
    /**
     * Get an iterator over the task's attributes
     *
     * @return an iterator which provide's attribute names
     */
    public Iterator getAttributeNames() {
        return attributes.keySet().iterator();
    }
    
    /**
     * Get the value of an attribute.
     *
     * @param attributeName the name of the attribute
     *
     * @return the value of the attribute or null if there is no such attribute.
     */
    public String getAttributeValue(String attributeName) {
        return (String)attributes.get(attributeName);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/support/AntClassLoader.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/AntClassLoader.java
@@ -1,150 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.support;

 import java.util.*;
 import java.net.*;
 import java.io.*;

 /**
 * The AntClassLoader is a type of URL classloader which reverses the standard
 * lookup order to load things from the URLs first and then to use the parent class
 * loader only if the class does not exist in the URLs.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class AntClassLoader extends URLClassLoader {
    /** A Debug label to print when the Classloader finds or fails to find a class. */
    private String debugLabel = null;
    
    /** A flag whihc controls whether messages are logged by the loader */
    private boolean debug = false;

    private void dumpURLs() {
        if (debug && debugLabel != null) {
            System.out.println(debugLabel + ": loader URLs");
            URL[] urls = getURLs();
            for (int i = 0; i < urls.length; ++i) {
                System.out.println(debugLabel + ": URL: " + urls[i]);
            }
        }
    }        
    
    public AntClassLoader(URL[] urls) {
        super(urls);
    }

    public AntClassLoader(URL[] urls, String debugLabel) {
        super(urls);
        this.debugLabel = debugLabel;
    }

    public AntClassLoader(URL[] urls,
                          ClassLoader parent) {
        super(urls, parent);
    }
    
    public AntClassLoader(URL[] urls,
                          ClassLoader parent, String debugLabel) {
        super(urls, parent);
        this.debugLabel = debugLabel;
    }
    
    public void setDebug(boolean debug) {
        this.debug = debug;
        dumpURLs();    
    }

    protected Class loadClass(String name, boolean resolve) 
            throws ClassNotFoundException {
        if (debug && debugLabel != null) {                
            System.out.println(debugLabel + ": Trying to load class " + name);
        }

        Class c = findLoadedClass(name);
        if (c == null) {
            try {
                c = findClass(name);
                if (debug && debugLabel != null) {
                    System.out.println(debugLabel + ": Found class " + name + " in this loader");
                }
            } catch (ClassNotFoundException e) {
                c = super.loadClass(name, resolve);
                if (debug && debugLabel != null) {
                    System.out.println(debugLabel + ": Found class " + name + " in parent loader");
                }
                return c;
            }
        }
        if (resolve) {
            resolveClass(c);
        }
        return c;
    }
        
    public void addURL(URL url) {
        super.addURL(url);
    }

    public URL getResource(String name) {
        URL url = findResource(name);
        if (url == null) {
            url = super.getResource(name);
        }
        
        return url;
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/support/AntException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/AntException.java
@@ -1,205 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.support;


 import java.io.*;

 /**
 * An AntException indicates some exceptional case has been encountered in
 * the processing of Ant. AntExceptions may accept a Throwable as a
 * cause allowing exceptions to be nested
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public abstract class AntException extends Exception {
    /** 
     * Exception that might have caused this one. 
     */
    private Throwable cause = null;

    /**
     * The location of the element which is associated with this exception if known.
     */
    private Location location = Location.UNKNOWN_LOCATION;
    
    /**
     * Constructs an exception with the given descriptive message.
     * @param msg Description of or information about the exception.
     */
    public AntException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public AntException(String msg, Throwable cause) {
        super(msg);
        this.cause = cause;
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause and a location in a file.
     * @param msg Description of or information about the exception.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public AntException(String msg, Throwable cause, Location location) {
        this(msg, cause);
        setLocation(location);
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     * @param cause Exception that might have caused this one.
     */
    public AntException(Throwable cause) {
        super(cause.getMessage());
        this.cause = cause;
    }

    /**
     * Constructs an exception with the given descriptive message and a location
     * in a file.
     * @param msg Description of or information about the exception.
     * @param location Location in the project file where the error occured.
     */
    public AntException(String msg, Location location) {
        super(msg);
        setLocation(location);
    }

    /**
     * Constructs an exception with the given exception as
     * a root cause and a location in a file.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public AntException(Throwable cause, Location location) {
        this(cause);
        setLocation(location);
    }

    /**
     * Returns the nested exception.
     *
     * @return the underlying exception
     */
    public Throwable getCause() {
        return cause;
    }

    /**
     * Sets the file location where the error occured.
     */
    public void setLocation(Location location) {
        if (location == null) {
            this.location = Location.UNKNOWN_LOCATION;
        }
        else {
            this.location = location;
        }
    }

    /**
     * Returns the file location where the error occured.
     */
    public Location getLocation() {
        return location;
    }

    /**
     * Print the stack trace to System.err
     */
    public void printStackTrace() {
        printStackTrace(System.err);
    }
    
    /**
     * Print the stack trace to the given PrintStream
     *
     * @param ps the PrintStream onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintStream ps) {
        synchronized (ps) {
            ps.println(this);
            if (cause != null) {
                ps.println("--- Nested Exception ---");
                cause.printStackTrace(ps);
            }
        }
    }
    
    /**
     * Print the stack trace to the given PrintWriter
     *
     * @param pw the PrintWriter onto which the stack trace 
     *           of this exception is to be printed
     */
    public void printStackTrace(PrintWriter pw) {
        synchronized (pw) {
            pw.println(this);
            if (cause != null) {
                pw.println("--- Nested Exception ---");
                cause.printStackTrace(pw);
            }
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/support/AntLocator.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/AntLocator.java
@@ -1,331 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.support;

 import java.util.*;
 import java.net.*;
 import java.io.*;

 /**
 * The Ant Locator is used to find various Ant components without
 * requiring the user to maintain environment properties. 
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class AntLocator {
    private AntLocator() {}
    
    /**
     * Get the URL for the given class's load location.
     *
     * @param theClass the class whose loadURL is desired.
     * @return a URL which identifies the component from which this class was loaded.
     *
     * @throws LocationException if the class' URL cannot be constructed.
     */
    static public URL getClassLocationURL(Class theClass) 
            throws LocationException {
        String className = theClass.getName().replace('.', '/') + ".class";
        URL classRawURL = theClass.getClassLoader().getResource(className);
        
        try {
            String fileComponent = classRawURL.getFile();
            if (classRawURL.getProtocol().equals("file")) {
                // Class comes from a directory of class files rather than
                // from a jar. 
                int classFileIndex = fileComponent.lastIndexOf(className);
                if (classFileIndex != -1) {
                    fileComponent = fileComponent.substring(0, classFileIndex);
                }
                
                return new URL("file:" + fileComponent);
            }
            else if (classRawURL.getProtocol().equals("jar")) {
                // Class is coming from a jar. The file component of the URL
                // is actually the URL of the jar file
                int classSeparatorIndex = fileComponent.lastIndexOf("!");
                if (classSeparatorIndex != -1) {
                    fileComponent = fileComponent.substring(0, classSeparatorIndex);
                }
                
                return new URL(fileComponent);
            }
            else {
                // its running out of something besides a jar. We just return the Raw
                // URL as a best guess
                return classRawURL;
            }
        }
        catch (MalformedURLException e) {
            throw new LocationException(e);
        }
    }


    /**
     * Get the location of AntHome
     *
     * @return the URL containing AntHome.
     *
     * @throws LocationException if Ant's home cannot be determined.
     */
    static public URL getAntHome() throws LocationException {
        try {
            URL libraryURL = getLibraryURL();
            if (libraryURL != null) {
                return new URL(libraryURL, "..");
            }
            else {
                return null;
            }
        }
        catch (MalformedURLException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * Get a URL to the Ant core jar. Other jars can be located 
     * from this as relative URLs
     *
     * @return a URL containing the Ant core or null if the core cannot be determined.
     *
     * @throws LocationException if the URL of the core.jar cannot be determined.
     */
    static public URL getCoreURL() throws LocationException {
        return getClassLocationURL(AntLocator.class);
    }
    
    /**
     * Get a URL to the Ant Library directory.
     *
     * @throws LocationException if the location of the Ant library directory cannot 
     *         be determined
     */
    static public URL getLibraryURL() throws LocationException {
        URL coreURL = getCoreURL();
        
        try {
            if (coreURL.getProtocol().equals("file") &&
                coreURL.getFile().endsWith("/")) {
                // we are running from a set of classes. This should only happen
                // in an Ant build situation. We use some embedded knowledge to
                // locate the lib directory
                File coreClassDirectory = new File(coreURL.getFile());
                File libDirectory = coreClassDirectory.getParentFile().getParentFile();
                if (!libDirectory.exists()) {
                    throw new LocationException("Ant library directory " + libDirectory + 
                                                   " does not exist");
                }
                return (new File(libDirectory, "lib")).toURL();
            }
            else {
                String coreURLString = coreURL.toString();
                int index = coreURLString.lastIndexOf("/");
                if (index != -1) {
                    coreURLString = coreURLString.substring(0, index+1);
                }
                return new URL(coreURLString);
            }
        }
        catch (MalformedURLException e) {
            throw new LocationException(e);
        }
    }
    
    /**
     * Get a classloader with which to load the SAX parser
     *
     * @return the classloader to use to load Ant's XML parser
     *
     * @throws LocationException if the location of the parser jars 
     *                              could not be determined.
     */
    static public ClassLoader getParserClassLoader(Properties properties) 
            throws LocationException {
        // we look for the parser directory based on a system property first
        String parserURLString = properties.getProperty(Constants.PropertyNames.PARSER_URL);
        URL parserURL = null;
        if (parserURLString != null) {
            try {
                parserURL = new URL(parserURLString);
            }
            catch (MalformedURLException e) {
                throw new LocationException("XML Parser URL " + parserURLString + 
                                               " is malformed.", e);
            }
        }
        else {
            try {
                parserURL = new URL(getLibraryURL(), "parser/");
            }
            catch (Exception e) {
                // ignore - we will just use the default class loader.
            }
        }

        if (parserURL != null) {
            try {
                URL[] parserURLs = null;
                if (parserURL.getProtocol().equals("file")) {
                    // build up the URLs for each jar file in the 
                    // parser directory
                    parserURLs = getDirectoryJarURLs(new File(parserURL.getFile()));
                }
                else {
                    // we can't search the URL so we look for a known parser relative to
                    // that URL
                    String defaultParser = properties.getProperty(Constants.PropertyNames.DEFAULT_PARSER);
                    if (defaultParser == null) {
                        defaultParser = Constants.Defaults.DEFAULT_PARSER;
                    }
                    
                    parserURLs = new URL[1];
                    parserURLs[0] = new URL(parserURL, defaultParser);
                    
                }
                
                return new AntClassLoader(parserURLs, "parser");
            }
            catch (MalformedURLException e) {
                throw new LocationException(e);
            }
        }
        
        return AntLocator.class.getClassLoader();
    }

    /**
     * Get an array of URLs for each file matching the given set of extensions
     *
     * @param directory the local directory
     * @param extensions the set of extensions to be returned
     *
     * @return an array of URLs for the file found in the directory.
     */
    static public URL[] getDirectoryURLs(File directory, final Set extensions) {
        URL[] urls = new URL[0];
        
        if (!directory.exists()) {
            return urls;
        }
        
        File[] jars = directory.listFiles(new FilenameFilter() {
                                                public boolean accept(File dir, String name) {
                                                    int extensionIndex = name.lastIndexOf(".");
                                                    if (extensionIndex == -1) {
                                                        return false;
                                                    }
                                                    String extension = name.substring(extensionIndex);
                                                    return extensions.contains(extension);
                                                }
                                            });
        urls = new URL[jars.length];
        for (int i = 0; i < jars.length; ++i) {
            try {
                urls[i] = jars[i].toURL();
            }
            catch (MalformedURLException e) {
                // just ignore
            }
        }
        return urls;
    }
    


    
    /**
     * Get an array of URLs for each jar file in a local directory.
     *
     * @param directory the local directory
     *
     * @return an array of URLs for the jars found in the directory.
     */
    static private URL[] getDirectoryJarURLs(File directory) {
        HashSet extensions = new HashSet();
        extensions.add(".jar");
        return getDirectoryURLs(directory, extensions);        
    }
    
    /**
     * Get the Core Class Loader. The core requires a SAX parser which must come from the
     * given classloader
     *
     * @throws LocationException if the location of the core ant classes could 
     *                              not be determined
     */
    static public AntClassLoader getCoreClassLoader(Properties properties) 
            throws LocationException {
        URL[] coreURL = new URL[1];
        coreURL[0] = getCoreURL();
        AntClassLoader coreLoader 
            = new AntClassLoader(coreURL, getParserClassLoader(properties), "core");
        URL libraryURL = getLibraryURL();
        if (libraryURL != null && libraryURL.getProtocol().equals("file")) {
            // we can search this

            URL[] optionalURLs = getDirectoryJarURLs(new File(libraryURL.getFile(), "optional"));
            for (int i = 0; i < optionalURLs.length; ++i) {
                coreLoader.addURL(optionalURLs[i]);
            }
            
        }
        
        return coreLoader;          
    }        
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/support/ConfigException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/ConfigException.java
@@ -1,125 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.support;

 import java.io.*;

 /**
 * A ConfigException indicates a problem with 
 * Ant's configuration.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public class ConfigException extends AntException {
    /**
     * Constructs an exception with the given descriptive message.
     *
     * @param msg Description of or information about the exception.
     */
    public ConfigException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given descriptive message and a location
     * in a file.
     * @param msg Description of or information about the exception.
     * @param location Location in the project file where the error occured.
     */
    public ConfigException(String msg, Location location) {
        super(msg, location);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     *
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public ConfigException(String msg, Throwable cause) {
        super(msg, cause);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause and a location in a file.
     * @param msg Description of or information about the exception.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ConfigException(String msg, Throwable cause, Location location) {
        super(msg, cause, location);
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     *
     * @param cause Exception that might have caused this one.
     */
    public ConfigException(Throwable cause) {
        super(cause);
    }

    /**
     * Constructs an exception with the given exception as
     * a root cause and a location in a file.
     * @param cause Exception that might have cause this one.
     * @param location Location in the project file where the error occured.
     */
    public ConfigException(Throwable cause, Location location) {
        super(cause, location);
    }

 }
--- a/proposal/mutant/src/main/org/apache/ant/core/support/Constants.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/Constants.java
@@ -1,76 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.support;

 import java.util.*;
 import java.net.*;
 import java.io.*;

 /**
 * Constants used by the Ant core
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class Constants {
    static public class PropertyNames {
        static public final String PARSER_URL = "ant.parser.url";
        static public final String DEFAULT_PARSER = "ant.parser.default";
    }
    
    static public class Defaults {
        static public final String DEFAULT_PARSER = "crimson.jar";
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/support/Location.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/Location.java
@@ -1,166 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.support;

 /**
 * Stores the file name and line number in a file.
 */
 public class Location {
    /**
     * The source URL to which this location relates.
     */
    private String source;
    
    /**
     * The line number of this location within the source
     */
    private int lineNumber;
    
    /**
     * The column number of this locatin within the source
     */
    private int columnNumber;

    /**
     * Standard unknown location constant;
     */
    public static final Location UNKNOWN_LOCATION = new Location();

    /**
     * Creates an "unknown" location.
     */
    private Location() {
        this(null, 0, 0);
    }

    /**
     * Creates a location consisting of a source location but no line number.
     *
     * @param source the source (URL) to which this location is associated.
     */
    public Location(String source) {
        this(source, 1, 1);
    }

    /**
     * Creates a location consisting of a source location and co-ordinates within that
     * source
     *
     * @param source the source (URL) to which this location is associated.
     * @param lineNumber the line number of this location
     * @param columnNumber the column number of this location
     */
    public Location(String source, int lineNumber, int columnNumber) {
        this.source = source;
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;
    }

    /**
     * Returns the source name, line number and a trailing space. An error
     * message can be appended easily. For unknown locations, returns
     * an empty string.
     *
     * @return a suitable string representation of the location
     */
    public String toString() {
        StringBuffer buf = new StringBuffer();

        if (source != null) {
            if (source.startsWith("file:")) {
                buf.append(source.substring(5));
            }
            else {
                buf.append(source);
            }

            if (lineNumber != 0) {
                buf.append(":");
                buf.append(lineNumber);
            }

            buf.append(": ");
        }

        return buf.toString();
    }
    
    /**
     * Get the source URL for this location
     *
     * @return a URL string 
     */
    public String getSourceURL() {
        return source;
    }
    
    /**
     * Get the line number of this location
     *
     * @return an integer line number
     */
    public int getLineNumber() {
        return lineNumber;
    }

    /**
     * Get the column number of this location
     *
     * @return an integer column number
     */
    public int getColumnNumber() {
        return columnNumber;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/support/LocationException.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/support/LocationException.java
@@ -1,97 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.support;

 import java.util.*;
 import java.net.URL;

 /**
 * A LocationException is thrown when there is a problem determining
 * the location of an Ant component.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class LocationException extends AntException {
    /**
     * Constructs an exception with the given descriptive message.
     *
     * @param msg Description of or information about the exception.
     */
    public LocationException(String msg) {
        super(msg);
    }

    /**
     * Constructs an exception with the given message and exception as
     * a root cause.
     *
     * @param msg Description of or information about the exception.
     * @param cause Throwable that might have cause this one.
     */
    public LocationException(String msg, Throwable cause) {
        super(msg, cause);
    }

    /**
     * Constructs an exception with the given exception as a root cause.
     *
     * @param cause Exception that might have caused this one.
     */
    public LocationException(Throwable cause) {
        super(cause);
    }

 }

--- a/proposal/mutant/src/main/org/apache/ant/core/types/AbstractScanner.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/AbstractScanner.java
@@ -1,580 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import java.io.*;
 import java.util.*;
 import org.apache.ant.core.execution.*;

 /**
 * The abstract FileSetInfo performs all of the name matching and mapping operations
 * common to FileSetInfo classes.
 */
 public abstract class AbstractScanner implements FileSetScanner {
    /** The list of patternSets to process on this directory */
    List patternSets;
    
    /** Indicator for whether default excludes should be applied. */
    boolean useDefaultExcludes;      
    
    /*
     * The patterns for the files that should be included.
     */
    private String[] includes;

    /**
     * The patterns for the files that should be excluded.
     */
    private String[] excludes;

    /**
     * Patterns that should be excluded by default.
     *
     * @see #addDefaultExcludes()
     */
    protected final static String[] DEFAULTEXCLUDES = {
        "**/*~",
        "**/#*#",
        "**/.#*",
        "**/%*%",
        "**/CVS",
        "**/CVS/**",
        "**/.cvsignore",
        "**/SCCS",
        "**/SCCS/**"
    };

    public AbstractScanner(List patternSets, 
                           boolean useDefaultExcludes) throws ExecutionException {
        this.patternSets = patternSets;
        this.useDefaultExcludes = useDefaultExcludes; 
        
        //convert patternsets into excludes
        PatternSet combinedSet = new PatternSet();
        for (Iterator i = patternSets.iterator(); i.hasNext(); ) {
            PatternSet set = (PatternSet)i.next();
            combinedSet.append(set);
        }
        
        String[] includes = combinedSet.getIncludePatterns();
        if (includes == null) {
            // No includes supplied, so set it to 'matches all'
            includes = new String[1];
            includes[0] = "**";
        }
        String[] excludes = combinedSet.getExcludePatterns();
        if (excludes == null) {
            excludes = new String[0];
        }

        setIncludes(includes);
        setExcludes(excludes);
        if (useDefaultExcludes) {
            addDefaultExcludes();
        }
    }

    /**
     * Sets the set of include patterns to use. All '/' and '\' characters are
     * replaced by <code>File.separatorChar</code>. So the separator used need
     * not match <code>File.separatorChar</code>.
     * <p>
     * When a pattern ends with a '/' or '\', "**" is appended.
     *
     * @param includes list of include patterns
     */
    protected void setIncludes(String[] includes) {
        if (includes == null) {
            this.includes = null;
        } else {
            this.includes = new String[includes.length];
            for (int i = 0; i < includes.length; i++) {
                String pattern;
                pattern = includes[i].replace('/',File.separatorChar).replace('\\',File.separatorChar);
                if (pattern.endsWith(File.separator)) {
                    pattern += "**";
                }
                this.includes[i] = pattern;
            }
        }
    }

    /**
     * Sets the set of exclude patterns to use. All '/' and '\' characters are
     * replaced by <code>File.separatorChar</code>. So the separator used need
     * not match <code>File.separatorChar</code>.
     * <p>
     * When a pattern ends with a '/' or '\', "**" is appended.
     *
     * @param excludes list of exclude patterns
     */
    protected void setExcludes(String[] excludes) {
        if (excludes == null) {
            this.excludes = null;
        } else {
            this.excludes = new String[excludes.length];
            for (int i = 0; i < excludes.length; i++) {
                String pattern;
                pattern = excludes[i].replace('/',File.separatorChar).replace('\\',File.separatorChar);
                if (pattern.endsWith(File.separator)) {
                    pattern += "**";
                }
                this.excludes[i] = pattern;
            }
        }
    }

    /**
     * Does the path match the start of this pattern up to the first "**".
     +
     * <p>This is not a general purpose test and should only be used if you
     * can live with false positives.</p>
     *
     * <p><code>pattern=**\\a</code> and <code>str=b</code> will yield true.
     *
     * @param pattern the (non-null) pattern to match against
     * @param str     the (non-null) string (path) to match
     */
    protected static boolean matchPatternStart(String pattern, String str) {
        // When str starts with a File.separator, pattern has to start with a
        // File.separator.
        // When pattern starts with a File.separator, str has to start with a
        // File.separator.
        if (str.startsWith(File.separator) !=
            pattern.startsWith(File.separator)) {
            return false;
        }

        Vector patDirs = new Vector();
        StringTokenizer st = new StringTokenizer(pattern,File.separator);
        while (st.hasMoreTokens()) {
            patDirs.addElement(st.nextToken());
        }

        Vector strDirs = new Vector();
        st = new StringTokenizer(str,File.separator);
        while (st.hasMoreTokens()) {
            strDirs.addElement(st.nextToken());
        }

        int patIdxStart = 0;
        int patIdxEnd   = patDirs.size()-1;
        int strIdxStart = 0;
        int strIdxEnd   = strDirs.size()-1;

        // up to first '**'
        while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
            String patDir = (String)patDirs.elementAt(patIdxStart);
            if (patDir.equals("**")) {
                break;
            }
            if (!match(patDir,(String)strDirs.elementAt(strIdxStart))) {
                return false;
            }
            patIdxStart++;
            strIdxStart++;
        }

        if (strIdxStart > strIdxEnd) {
            // String is exhausted
            return true;
        } else if (patIdxStart > patIdxEnd) {
            // String not exhausted, but pattern is. Failure.
            return false;
        } else {
            // pattern now holds ** while string is not exhausted
            // this will generate false positives but we can live with that.
            return true;
        }
    }

    /**
     * Matches a path against a pattern.
     *
     * @param pattern the (non-null) pattern to match against
     * @param str     the (non-null) string (path) to match
     *
     * @return <code>true</code> when the pattern matches against the string.
     *         <code>false</code> otherwise.
     */
    protected static boolean matchPath(String pattern, String str) {
        // When str starts with a File.separator, pattern has to start with a
        // File.separator.
        // When pattern starts with a File.separator, str has to start with a
        // File.separator.
        if (str.startsWith(File.separator) !=
            pattern.startsWith(File.separator)) {
            return false;
        }

        Vector patDirs = new Vector();
        StringTokenizer st = new StringTokenizer(pattern,File.separator);
        while (st.hasMoreTokens()) {
            patDirs.addElement(st.nextToken());
        }

        Vector strDirs = new Vector();
        st = new StringTokenizer(str,File.separator);
        while (st.hasMoreTokens()) {
            strDirs.addElement(st.nextToken());
        }

        int patIdxStart = 0;
        int patIdxEnd   = patDirs.size()-1;
        int strIdxStart = 0;
        int strIdxEnd   = strDirs.size()-1;

        // up to first '**'
        while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
            String patDir = (String)patDirs.elementAt(patIdxStart);
            if (patDir.equals("**")) {
                break;
            }
            if (!match(patDir,(String)strDirs.elementAt(strIdxStart))) {
                return false;
            }
            patIdxStart++;
            strIdxStart++;
        }
        if (strIdxStart > strIdxEnd) {
            // String is exhausted
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (!patDirs.elementAt(i).equals("**")) {
                    return false;
                }
            }
            return true;
        } else {
            if (patIdxStart > patIdxEnd) {
                // String not exhausted, but pattern is. Failure.
                return false;
            }
        }

        // up to last '**'
        while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
            String patDir = (String)patDirs.elementAt(patIdxEnd);
            if (patDir.equals("**")) {
                break;
            }
            if (!match(patDir,(String)strDirs.elementAt(strIdxEnd))) {
                return false;
            }
            patIdxEnd--;
            strIdxEnd--;
        }
        if (strIdxStart > strIdxEnd) {
            // String is exhausted
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (!patDirs.elementAt(i).equals("**")) {
                    return false;
                }
            }
            return true;
        }

        while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) {
            int patIdxTmp = -1;
            for (int i = patIdxStart+1; i <= patIdxEnd; i++) {
                if (patDirs.elementAt(i).equals("**")) {
                    patIdxTmp = i;
                    break;
                }
            }
            if (patIdxTmp == patIdxStart+1) {
                // '**/**' situation, so skip one
                patIdxStart++;
                continue;
            }
            // Find the pattern between padIdxStart & padIdxTmp in str between
            // strIdxStart & strIdxEnd
            int patLength = (patIdxTmp-patIdxStart-1);
            int strLength = (strIdxEnd-strIdxStart+1);
            int foundIdx  = -1;
 strLoop:
            for (int i = 0; i <= strLength - patLength; i++) {
                for (int j = 0; j < patLength; j++) {
                    String subPat = (String)patDirs.elementAt(patIdxStart+j+1);
                    String subStr = (String)strDirs.elementAt(strIdxStart+i+j);
                    if (!match(subPat,subStr)) {
                        continue strLoop;
                    }
                }

                foundIdx = strIdxStart+i;
                break;
            }

            if (foundIdx == -1) {
                return false;
            }

            patIdxStart = patIdxTmp;
            strIdxStart = foundIdx+patLength;
        }

        for (int i = patIdxStart; i <= patIdxEnd; i++) {
            if (!patDirs.elementAt(i).equals("**")) {
                return false;
            }
        }

        return true;
    }



    /**
     * Matches a string against a pattern. The pattern contains two special
     * characters:
     * '*' which means zero or more characters,
     * '?' which means one and only one character.
     *
     * @param pattern the (non-null) pattern to match against
     * @param str     the (non-null) string that must be matched against the
     *                pattern
     *
     * @return <code>true</code> when the string matches against the pattern,
     *         <code>false</code> otherwise.
     */
    protected static boolean match(String pattern, String str) {
        char[] patArr = pattern.toCharArray();
        char[] strArr = str.toCharArray();
        int patIdxStart = 0;
        int patIdxEnd   = patArr.length-1;
        int strIdxStart = 0;
        int strIdxEnd   = strArr.length-1;
        char ch;

        boolean containsStar = false;
        for (int i = 0; i < patArr.length; i++) {
            if (patArr[i] == '*') {
                containsStar = true;
                break;
            }
        }

        if (!containsStar) {
            // No '*'s, so we make a shortcut
            if (patIdxEnd != strIdxEnd) {
                return false; // Pattern and string do not have the same size
            }
            for (int i = 0; i <= patIdxEnd; i++) {
                ch = patArr[i];
                if (ch != '?' && ch != strArr[i]) {
                    return false; // Character mismatch
                }
            }
            return true; // String matches against pattern
        }

        if (patIdxEnd == 0) {
            return true; // Pattern contains only '*', which matches anything
        }

        // Process characters before first star
        while((ch = patArr[patIdxStart]) != '*' && strIdxStart <= strIdxEnd) {
            if (ch != '?' && ch != strArr[strIdxStart]) {
                return false;
            }
            patIdxStart++;
            strIdxStart++;
        }
        if (strIdxStart > strIdxEnd) {
            // All characters in the string are used. Check if only '*'s are
            // left in the pattern. If so, we succeeded. Otherwise failure.
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (patArr[i] != '*') {
                    return false;
                }
            }
            return true;
        }

        // Process characters after last star
        while((ch = patArr[patIdxEnd]) != '*' && strIdxStart <= strIdxEnd) {
            if (ch != '?' && ch != strArr[strIdxEnd]) {
                return false;
            }
            patIdxEnd--;
            strIdxEnd--;
        }
        if (strIdxStart > strIdxEnd) {
            // All characters in the string are used. Check if only '*'s are
            // left in the pattern. If so, we succeeded. Otherwise failure.
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (patArr[i] != '*') {
                    return false;
                }
            }
            return true;
        }

        // process pattern between stars. padIdxStart and patIdxEnd point
        // always to a '*'.
        while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) {
            int patIdxTmp = -1;
            for (int i = patIdxStart+1; i <= patIdxEnd; i++) {
                if (patArr[i] == '*') {
                    patIdxTmp = i;
                    break;
                }
            }
            if (patIdxTmp == patIdxStart+1) {
                // Two stars next to each other, skip the first one.
                patIdxStart++;
                continue;
            }
            // Find the pattern between padIdxStart & padIdxTmp in str between
            // strIdxStart & strIdxEnd
            int patLength = (patIdxTmp-patIdxStart-1);
            int strLength = (strIdxEnd-strIdxStart+1);
            int foundIdx  = -1;
 strLoop:
            for (int i = 0; i <= strLength - patLength; i++) {
                for (int j = 0; j < patLength; j++) {
                    ch = patArr[patIdxStart+j+1];
                    if (ch != '?' && ch != strArr[strIdxStart+i+j]) {
                        continue strLoop;
                    }
                }

                foundIdx = strIdxStart+i;
                break;
            }

            if (foundIdx == -1) {
                return false;
            }

            patIdxStart = patIdxTmp;
            strIdxStart = foundIdx+patLength;
        }

        // All characters in the string are used. Check if only '*'s are left
        // in the pattern. If so, we succeeded. Otherwise failure.
        for (int i = patIdxStart; i <= patIdxEnd; i++) {
            if (patArr[i] != '*') {
                return false;
            }
        }
        return true;
    }

    /**
     * Tests whether a name matches against at least one include pattern.
     *
     * @param name the name to match
     * @return <code>true</code> when the name matches against at least one
     *         include pattern, <code>false</code> otherwise.
     */
    protected boolean isIncluded(String name) {
        for (int i = 0; i < includes.length; i++) {
            if (matchPath(includes[i],name)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Tests whether a name matches the start of at least one include pattern.
     *
     * @param name the name to match
     * @return <code>true</code> when the name matches against at least one
     *         include pattern, <code>false</code> otherwise.
     */
    protected boolean couldHoldIncluded(String name) {
        for (int i = 0; i < includes.length; i++) {
            if (matchPatternStart(includes[i],name)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Tests whether a name matches against at least one exclude pattern.
     *
     * @param name the name to match
     * @return <code>true</code> when the name matches against at least one
     *         exclude pattern, <code>false</code> otherwise.
     */
    protected boolean isExcluded(String name) {
        for (int i = 0; i < excludes.length; i++) {
            if (matchPath(excludes[i],name)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Adds the array with default exclusions to the current exclusions set.
     *
     */
    public void addDefaultExcludes() {
        int excludesLength = excludes == null ? 0 : excludes.length;
        String[] newExcludes;
        newExcludes = new String[excludesLength + DEFAULTEXCLUDES.length];
        if (excludesLength > 0) {
            System.arraycopy(excludes,0,newExcludes,0,excludesLength);
        }
        for (int i = 0; i < DEFAULTEXCLUDES.length; i++) {
            newExcludes[i+excludesLength] = DEFAULTEXCLUDES[i].replace('/',File.separatorChar).replace('\\',File.separatorChar);
        }
        excludes = newExcludes;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/DataType.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/DataType.java
@@ -1,140 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
 package org.apache.ant.core.types;

 import org.apache.ant.core.execution.*;
 import java.io.*;

 /**
 * A DataType is an element which can register a named value in the
 * ExecutionFrame's context. 
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public abstract class DataType extends AbstractTask {
    private String reference = null;
    private Object referencedObject = null;

    public void execute() throws ExecutionException {
        validate();
    }

    protected void validate() throws ExecutionException {
    }

    /**
     * Creates an exception that indicates that refid has to be the
     * only attribute if it is set.  
     */
    protected ExecutionException tooManyAttributes() {
        return new ExecutionException("You must not specify more than one attribute" +
                                      " when using refid" );
    }

    /**
     * Creates an exception that indicates that this XML element must
     * not have child elements if the refid attribute is set.  
     */
    protected ExecutionException noChildrenAllowed() {
        return new ExecutionException("You must not specify nested elements when using refid");
    }

    /**
     * Creates an exception that indicates the user has generated a
     * loop of data types referencing each other.  
     */
    protected ExecutionException circularReference() {
        return new ExecutionException("This data type contains a circular reference.");
    }
    
    /**
     * Makes this instance in effect a reference to another DataType
     * instance.
     */
    public void setRefid(String reference) throws ExecutionException {
        this.reference = reference;
        Object referencedObject = getTaskContext().getDataValue(reference);

        if (referencedObject == null) {
            throw new ExecutionException("Unable to locate the reference specified by refid '" +
                                         getReference() + "'");
        }
        
        if (!this.getClass().isAssignableFrom(referencedObject.getClass())) {
            throw new ExecutionException("The object referenced by refid '" +
                                         getReference() + "' is not compatible with this element ");
        }
    }

    /**
     * Has the refid attribute of this element been set?
     */
    public boolean isReference() {
        return referencedObject != null;
    }


    protected Object getReferencedObject() throws ExecutionException {
        if (!isReference()) {
            throw new ExecutionException("You cannot get a referenced value from a data type " + 
                                         "which does not have the refid attribute");
        }
        
        return referencedObject;
    }
    
    protected String getReference() {
        return reference;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/DirectoryScanner.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/DirectoryScanner.java
@@ -1,266 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import java.io.*;
 import java.util.*;
 import org.apache.ant.core.execution.*;

 /**
 * A DirectoryFileset is a fileset where the files come from a directory and
 * its subdirectories. 
 */
 public class DirectoryScanner extends AbstractScanner {
    /** The directory which is the root of the search space. */
    File basedir;
    
    /**
     * The files that where found and matched at least one includes, and matched
     * no excludes.
     */
    protected List filesIncluded;

    /**
     * The files that where found and did not match any includes.
     */
    protected List filesNotIncluded;

    /**
     * The files that where found and matched at least one includes, and also
     * matched at least one excludes.
     */
    protected List filesExcluded;

    /**
     * The directories that where found and matched at least one includes, and
     * matched no excludes.
     */
    protected List dirsIncluded;

    /**
     * The directories that where found and did not match any includes.
     */
    protected List dirsNotIncluded;

    /**
     * The files that where found and matched at least one includes, and also
     * matched at least one excludes.
     */
    protected List dirsExcluded;

    /** Map to map filenames to actual File objects */
    private Map filenameMap = null;

    public DirectoryScanner(File basedir, List patternSets, 
                            boolean useDefaultExcludes) throws ExecutionException {
        super(patternSets, useDefaultExcludes);
        this.basedir = basedir;
    }
    
    public String[] getIncludedFiles() throws ExecutionException {
        if (filesIncluded == null) {
            scan();
        }
        
        return (String[])filesIncluded.toArray(new String[0]);
    }

    /**
     * Scans the base directory for files that match at least one include
     * pattern, and don't match any exclude patterns.
     *
     * @throws ExecutionException when basedir was set incorrecly
     */
    public void scan() throws ExecutionException  {
        if (basedir == null) {
            throw new ExecutionException("The directory to scan has not been set");
        }
        if (!basedir.exists()) {
            throw new ExecutionException("basedir \"" + basedir
                                            + "\" does not exist");
        }
        if (!basedir.isDirectory()) {
            throw new ExecutionException("basedir \"" + basedir
                                            + "\" is not a directory");
        }

        filesIncluded = new ArrayList();
        filesNotIncluded = new ArrayList();
        filesExcluded = new ArrayList();
        dirsIncluded = new ArrayList();
        dirsNotIncluded = new ArrayList();
        dirsExcluded = new ArrayList();
        filenameMap = new HashMap();

        String root = "";
        String mappedRoot = mapName(root);
        filenameMap.put(mappedRoot, root);
        if (isIncluded(root)) {
            if (!isExcluded(root)) {
                dirsIncluded.add(mappedRoot);
            } else {
                dirsExcluded.add(mappedRoot);
            }
        } else {
            dirsNotIncluded.add(mappedRoot);
        }
        scandir(basedir, root, true);
    }

    /**
     * Scans the passed dir for files and directories. Found files and
     * directories are placed in their respective collections, based on the
     * matching of includes and excludes. When a directory is found, it is
     * scanned recursively.
     *
     * @param dir   the directory to scan
     * @param vpath the path relative to the basedir (needed to prevent
     *              problems with an absolute path when using dir)
     *
     * @see #filesIncluded
     * @see #filesNotIncluded
     * @see #filesExcluded
     * @see #dirsIncluded
     * @see #dirsNotIncluded
     * @see #dirsExcluded
     */
    protected void scandir(File dir, String vpath, boolean fast) 
        throws ExecutionException {
        String[] newfiles = dir.list();

        if (newfiles == null) {
            /*
             * two reasons are mentioned in the API docs for File.list
             * (1) dir is not a directory. This is impossible as
             *     we wouldn't get here in this case.
             * (2) an IO error occurred (why doesn't it throw an exception 
             *     then???)
             */
            throw new ExecutionException ("IO error scanning directory "
                                           + dir.getAbsolutePath());
        }

        for (int i = 0; i < newfiles.length; i++) {
            String name = vpath+newfiles[i];
            String mappedName = mapName(name);
            filenameMap.put(mappedName, name);
            File   file = new File(dir,newfiles[i]);
            if (file.isDirectory()) {
                if (isIncluded(name)) {
                    if (!isExcluded(name)) {
                        dirsIncluded.add(mappedName);
                        if (fast) {
                            scandir(file, name+File.separator, fast);
                        }
                    } else {
                        dirsExcluded.add(mappedName);
                    }
                } else {
                    dirsNotIncluded.add(mappedName);
                    if (fast && couldHoldIncluded(name)) {
                        scandir(file, name+File.separator, fast);
                    }
                }
                if (!fast) {
                    scandir(file, name+File.separator, fast);
                }
            } else if (file.isFile()) {
                if (isIncluded(name)) {
                    if (!isExcluded(name)) {
                        filesIncluded.add(mappedName);
                    } else {
                        filesExcluded.add(mappedName);
                    }
                } else {
                    filesNotIncluded.add(mappedName);
                }
            }
        }
    }

    private String mapName(String rawName) {
        return "bozo/" + rawName;
    }

    public File getLocalFile(String mappedName) throws ExecutionException {
        if (filesIncluded == null) {
            scan();
        }
        
        String realName = (String)filenameMap.get(mappedName);
        if (realName == null) {
            throw new ExecutionException("\"" + mappedName + "\" was not included in the scan.");
        }
        
        return new File(basedir, realName);
    }

    public String toString() {
        try {
            String[] files = getIncludedFiles();
            StringBuffer sb = new StringBuffer();
            String lsep = System.getProperty("line.separator");
            for (int i = 0; i < files.length; ++i) {
                sb.append(files[i]);
                sb.append(lsep);
            }
            
            return sb.toString();
        }
        catch (ExecutionException e) {
            return "Fileset from \"" + basedir + "\"";
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/EnumeratedAttribute.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/EnumeratedAttribute.java
@@ -1,116 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import org.apache.ant.core.execution.*;

 /**
 * Helper class for attributes that can only take one of a fixed list
 * of values.
 *
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> 
 */
 public abstract class EnumeratedAttribute {

    /** The value of this attribute. */
    private String value;

    /**
     * This is the only method a subclass needs to implement.
     *
     * @return an array holding all possible values of the enumeration.
     */
    public abstract String[] getValues();

    /**
     * Set the value of the enumeration.
     *
     * Invoked by {@link org.apache.ant.core.execution.IntrospectionHelper IntrospectionHelper}.
     *
     * @param value the value of the enumeration
     *
     * @throws ExecutionException if the value is not value
     */
    public final void setValue(String value) throws ExecutionException {
        if (!containsValue(value)) {
            throw new ExecutionException(value + " is not a legal value for this attribute");
        }
        this.value = value;
    }

    /**
     * Is this value included in the enumeration?
     */
    public final boolean containsValue(String value) {
        String[] values = getValues();
        if (values == null || value == null) {
            return false;
        }
        
        for (int i = 0; i < values.length; i++) {
            if (value.equals(values[i])) {
                return true;
            }
        }
        return false;
    }

    /**
     * Retrieves the value.
     */
    public final String getValue() {
        return value;
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/FileSet.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/FileSet.java
@@ -1,319 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import java.util.*;
 import java.io.*;
 import java.net.URL;
 import org.apache.ant.core.execution.*;

 /**
 * Moved out of MatchingTask to make it a standalone object that could
 * be referenced (by scripts for example).
 *
 * @author Arnout J. Kuiper <a href="mailto:ajkuiper@wxs.nl">ajkuiper@wxs.nl</a> 
 * @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a>
 * @author Sam Ruby <a href="mailto:rubys@us.ibm.com">rubys@us.ibm.com</a>
 * @author Jon S. Stevens <a href="mailto:jon@clearink.com">jon@clearink.com</a>
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
 */
 public class FileSet extends DataType {
    private FileSetScanner scanner = null;
    
    private PatternSet defaultPatterns = new PatternSet();
    private List patternSets = new ArrayList();

    /** 
     * The dir attribute is set when you are generating the list of files
     *  from a directory. 
     */
    private File dir = null;
    
    /** The zipfile attribute is used when the source of files is a zip file */
    private URL zipFile = null;
    
    /** 
     * The filelist attribute is a file which contains a list of file names. It must be used
     * with the base attribute which indicates where the files are stored.
     */
    private URL fileList = null;
    
    /**
     * When using the filelist this attribute indicates the base location of the files in
     * the list.
     */
    private URL fileListBase = null;
    
    private boolean useDefaultExcludes = true;

    public FileSet() {
        patternSets.add(defaultPatterns);
    }

    /**
     * Makes this instance in effect a reference to another FileSet
     * instance.
     *
     * <p>You must not set another attribute or nest elements inside
     * this element if you make it a reference.</p> 
     */
    public void setRefid(String reference) throws ExecutionException {
        if (dir != null || defaultPatterns.hasPatterns()) {
            throw tooManyAttributes();
        }
        if (!(patternSets.size() == 1)) {
            throw noChildrenAllowed();
        }
        super.setRefid(reference);
    }

    public void setDir(File dir) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        this.dir = dir;
    }

    public void setZipFile(URL zipFile) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        this.zipFile = zipFile;
    }

    public void setFileList(URL fileList) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        this.fileList = fileList;
    }

    public void setFileListBase(URL fileListBase) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        this.fileListBase = fileListBase;
    }

    public PatternSet createPatternSet() throws ExecutionException {
        if (isReference()) {
            throw noChildrenAllowed();
        }
        PatternSet patternSet = new PatternSet();
        patternSets.add(patternSet);
        return patternSet;
    }

    /**
     * add a name entry on the include list
     */
    public PatternSet.NameEntry createInclude() throws ExecutionException {
        if (isReference()) {
            throw noChildrenAllowed();
        }
        return defaultPatterns.createInclude();
    }
    
    /**
     * add a name entry on the exclude list
     */
    public PatternSet.NameEntry createExclude() throws ExecutionException {
        if (isReference()) {
            throw noChildrenAllowed();
        }
        return defaultPatterns.createExclude();
    }

    /**
     * Sets the set of include patterns. Patterns may be separated by a comma
     * or a space.
     *
     * @param includes the string containing the include patterns
     */
    public void setIncludes(String includes) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        defaultPatterns.setIncludes(includes);
    }

    /**
     * Sets the set of exclude patterns. Patterns may be separated by a comma
     * or a space.
     *
     * @param excludes the string containing the exclude patterns
     */
    public void setExcludes(String excludes) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        defaultPatterns.setExcludes(excludes);
    }

    /**
     * Sets the name of the file containing the includes patterns.
     *
     * @param incl The file to fetch the include patterns from.  
     */
     public void setIncludesFile(URL incl) throws ExecutionException {
         if (isReference()) {
             throw tooManyAttributes();
         }

         defaultPatterns.setIncludesFile(incl);
     }

    /**
     * Sets the name of the file containing the includes patterns.
     *
     * @param excl The file to fetch the exclude patterns from.  
     */
     public void setExcludesFile(URL excl) throws ExecutionException {
         if (isReference()) {
             throw tooManyAttributes();
         }

         defaultPatterns.setExcludesFile(excl);
     }

    /**
     * Sets whether default exclusions should be used or not.
     *
     * @param useDefaultExcludes "true"|"on"|"yes" when default exclusions 
     *                           should be used, "false"|"off"|"no" when they
     *                           shouldn't be used.
     */
    public void setDefaultExcludes(boolean useDefaultExcludes) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }

        this.useDefaultExcludes = useDefaultExcludes;
    }

    protected FileSet getReferencedFileSet() throws ExecutionException {
        Object o = getReferencedObject();
        if (!(o instanceof FileSet)) {
            throw new ExecutionException(getReference() + " doesn\'t denote a fileset");;
        } else {
            return (FileSet) o;
        }
    }

    public void validate() throws ExecutionException {
        if (dir != null) {
            // firstly validate that the other attributes are not set
            if (zipFile != null || fileList != null || fileListBase != null) {
                throw new ExecutionException("The 'dir' attribute may not be combined with any " 
                                             + "of the 'zipfile', 'filelist' and 'base' attributes");
            }
        }
        else if (zipFile != null) {
            if (fileList != null || fileListBase != null) {
                throw new ExecutionException("The 'zipfile' attribute may not be combined with any " 
                                             + "of the 'dir', 'filelist' and 'base' attributes");
            }
        }
        else if (fileList != null) {
            if (fileListBase == null) {
                throw new ExecutionException("A 'base' attribute is required when using the 'filelist' "
                                             + "attribute");
            }
        }
        else {
            throw new ExecutionException("You must specify one of the 'dir', 'zipfile', or 'filelist' " 
                                         + "attributes");
        }
    }
    
    public FileSetScanner getScanner() throws ExecutionException {
        if (isReference()) {
            return getReferencedFileSet().getScanner();
        }
        
        if (scanner != null) {
            return scanner;
        }
        
        // need to create the fileset info. For that we are going to need
        // to determine which type of FileSetInfo implementation we should use.
        if (dir != null) {
            scanner = new DirectoryScanner(dir, patternSets, useDefaultExcludes);
        }
        else if (zipFile != null) {
        }
        else if (fileList != null) {
        }
        else {
        }
        
        return scanner;
    }
    
    public String toString() {
        try {
            return getScanner().toString();
        }
        catch (ExecutionException e) {
            return "FileSet";
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/FileSetScanner.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/FileSetScanner.java
@@ -1,115 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import java.io.*;
 import java.net.URL;
 import org.apache.ant.core.execution.*;

 /**
 * The FileSetInfo interface defines the result of applying filtering to
 * some base collection of files. Filtering involves both file exclusion 
 * and file name mapping.
 *
 * FileSetInfo should be lazily evaluated to allow them to be defined before the
 * required files have been created. They should be evaluated at first use.
 */
 public interface FileSetScanner {
    /**
     * Get the included files after their file names have been mapped
     *
     * @return an array of strings, each one is the mapped name of a file.
     */
    String[] getIncludedFiles() throws ExecutionException ;
 //    
 //    /**
 //     * Get directories included after their file names have been mapped
 //     *
 //     * @return an array of strings, each one is the mapped name of a file.
 //     */
 //    String[] getIncludedDirectories();
 //
 //    /**
 //     * Get a file for the content of the named included file. If the content
 //     * is not stored in the local filesystem, a temporary file is created with the content. 
 //     * Callers should not rely on this file representing the actual location of the underlying
 //     * data.
 //     */
 //    File getContentFile(String mappedName);
 //    
 //    /**
 //     * Get a URL for the content. The content may be cached on the local system and thus
 //     * callers should not rely on the location
 //     *
 //     */
 //    URL getContentURL(String mappedName);
 //    
 //    /**
 //     * Get an input stream to the content of the named entry of the fileset.
 //     */
 //    InputStream getInputStream(String mappedName);
 //    
    /**
     * Get a local file.
     *
     * This method returns a file pointing to the actual local filesystem file from 
     * which the file content comes. If the file does not exist locally, a null is 
     * returned. Note that due to name mapping, the actual file name may be different
     * from the mapped name.
     *
     * @return a file representing the mapped file in the local filesystem.
     */
    File getLocalFile(String mappedName) throws ExecutionException ;
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/types/PatternSet.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/types/PatternSet.java
@@ -1,373 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.types;

 import java.io.*;
 import java.util.*;
 import org.apache.ant.core.execution.*;
 import java.net.URL;

 /**
 * Named collection of include/exclude tags.
 *
 * @author Arnout J. Kuiper <a href="mailto:ajkuiper@wxs.nl">ajkuiper@wxs.nl</a> 
 * @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a>
 * @author Sam Ruby <a href="mailto:rubys@us.ibm.com">rubys@us.ibm.com</a>
 * @author Jon S. Stevens <a href="mailto:jon@clearink.com">jon@clearink.com</a>
 * @author <a href="mailto:stefan.bodewig@megabit.net">Stefan Bodewig</a> 
 */
 public class PatternSet extends DataType {
    private boolean filesRead = false;
    private List includeList = new ArrayList();
    private List excludeList = new ArrayList();
    
    private URL includeFile = null;
    private URL excludeFile = null;

    /**
     * inner class to hold a name on list.  "If" and "Unless" attributes
     * may be used to invalidate the entry based on the existence of a 
     * property (typically set thru the use of the Available task).
     */
    public class NameEntry {
        private String name;
 //        private String ifCond;
 //        private String unlessCond;

        public void setName(String name) { 
            this.name = name; 
        }

 //        public void setIf(String cond) {
 //            ifCond = cond;
 //        }
 //
 //        public void setUnless(String cond) {
 //            unlessCond = cond;
 //        }
 //
        public String getName() {
            return name;
        }

 //        public String evalName(Project p) { 
 //            return valid(p) ? name : null; 
 //        }

 //        private boolean valid(Project p) {
 //            if (ifCond != null && p.getProperty(ifCond) == null) {
 //                return false;
 //            } else if (unlessCond != null && p.getProperty(unlessCond) != null) {
 //                return false;
 //            }
 //            return true;
 //        }
    }

    /**
     * Makes this instance in effect a reference to another PatternSet
     * instance.
     *
     * <p>You must not set another attribute or nest elements inside
     * this element if you make it a reference.</p> 
     */
    public void setRefid(String reference) throws ExecutionException {
        if (!includeList.isEmpty() || !excludeList.isEmpty()) {
            throw tooManyAttributes();
        }
        super.setRefid(reference);
    }

    /**
     * add a name entry on the include list
     */
    public NameEntry createInclude() throws ExecutionException {
        if (isReference()) {
            throw noChildrenAllowed();
        }
        return addPatternToList(includeList);
    }
    
    /**
     * add a name entry on the exclude list
     */
    public NameEntry createExclude() throws ExecutionException {
        if (isReference()) {
            throw noChildrenAllowed();
        }
        return addPatternToList(excludeList);
    }

    /**
     * Sets the set of include patterns. Patterns may be separated by a comma
     * or a space.
     *
     * @param includes the string containing the include patterns
     */
    public void setIncludes(String includes) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }
        if (includes != null && includes.length() > 0) {
            StringTokenizer tok = new StringTokenizer(includes, ", ", false);
            while (tok.hasMoreTokens()) {
                createInclude().setName(tok.nextToken());
            }
        }
    }

    /**
     * Sets the set of exclude patterns. Patterns may be separated by a comma
     * or a space.
     *
     * @param excludes the string containing the exclude patterns
     */
    public void setExcludes(String excludes) throws ExecutionException {
        if (isReference()) {
            throw tooManyAttributes();
        }
        if (excludes != null && excludes.length() > 0) {
            StringTokenizer tok = new StringTokenizer(excludes, ", ", false);
            while (tok.hasMoreTokens()) {
                createExclude().setName(tok.nextToken());
            }
        }
    }

    /**
     * add a name entry to the given list
     */
    private NameEntry addPatternToList(List list) {
        NameEntry result = new NameEntry();
        list.add(result);
        return result;
    }

    /**
     * Sets the name of the file containing the includes patterns.
     *
     * @param incl The file to fetch the include patterns from.  
     */
     public void setIncludesFile(URL includeFile) throws ExecutionException {
         if (isReference()) {
             throw tooManyAttributes();
         }
         
 //         if (!incl.exists()) {
 //             throw new BuildException("Includesfile "+incl.getAbsolutePath()
 //                                      +" not found.");
 //         }
         this.includeFile = includeFile;
     }

    /**
     * Sets the name of the file containing the excludes patterns.
     *
     * @param excludeFile The file to fetch the exclude patterns from.  
     */
     public void setExcludesFile(URL excludeFile) throws ExecutionException {
         if (isReference()) {
             throw tooManyAttributes();
         }
 //         if (!excl.exists()) {
 //             throw new BuildException("Excludesfile "+excl.getAbsolutePath()
 //                                      +" not found.");
 //         }
         this.excludeFile = excludeFile;
     }
    
    /**
     *  Reads path matching patterns from a file and adds them to the
     *  includes or excludes list (as appropriate).  
     */
    private void readPatterns(URL patternFile, List patternList)
        throws ExecutionException {
        
        BufferedReader patternReader = null;
        try {
            // Get a FileReader
            patternReader = 
                new BufferedReader(new InputStreamReader(patternFile.openStream())); 
        
            // Create one NameEntry in the appropriate pattern list for each 
            // line in the file.
            String line = null;
            while ((line = patternReader.readLine()) != null) {
                if (line.length() > 0) {
                    line = getTaskContext().replacePropertyRefs(line);
                    addPatternToList(patternList).setName(line);
                }
            }
        } catch(IOException ioe)  {
            throw new ExecutionException("An error occured while reading from pattern file: " 
                                         + patternFile, ioe);
        }
        finally {
            if (patternReader != null) {
                try {
                    patternReader.close();
                }
                catch (IOException e) {
                    // do nothing
                }
            }
        }
    }

    /**
     * Adds the patterns of the other instance to this set.
     */
    public void append(PatternSet other) throws ExecutionException {
        if (isReference()) {
            throw new ExecutionException("Cannot append to a reference");
        }

        String[] incl = other.getIncludePatterns();
        if (incl != null) {
            for (int i=0; i<incl.length; i++) {
                createInclude().setName(incl[i]);
            }
        }
        
        String[] excl = other.getExcludePatterns();
        if (excl != null) {
            for (int i=0; i<excl.length; i++) {
                createExclude().setName(excl[i]);
            }
        }
    }

    /**
     * Returns the filtered include patterns.
     */
    public String[] getIncludePatterns() throws ExecutionException {
        if (isReference()) {
            return getReferencedPatternSet().getIncludePatterns();
        } else {
            readFiles();
            return makeArray(includeList);
        }
    }

    /**
     * Returns the filtered include patterns.
     */
    public String[] getExcludePatterns() throws ExecutionException {
        if (isReference()) {
            return getReferencedPatternSet().getExcludePatterns();
        } else {
            readFiles();
            return makeArray(excludeList);
        }
    }

    /**
     * helper for FileSet.
     */
    boolean hasPatterns() {
        return includeFile != null || excludeFile != null
            || includeList.size() > 0 || excludeList.size() > 0;
    }

    /**
     * Performs the check for circular references and returns the
     * referenced PatternSet.  
     */
    private PatternSet getReferencedPatternSet() throws ExecutionException {
        Object o = getReferencedObject();
        if (!(o instanceof PatternSet)) {
            throw new ExecutionException(getReference() + " doesn\'t denote a patternset");;
        } else {
            return (PatternSet) o;
        }
    }


    /**
     * Convert a list of NameEntry elements into an array of Strings.
     */
    private String[] makeArray(List list) {
        if (list.size() == 0) {
            return null;
        }

        List tmpNames = new Vector();
        for (Iterator i = list.iterator() ; i.hasNext() ;) {
            NameEntry ne = (NameEntry)i.next();
            String pattern = ne.getName();
            if (pattern != null && pattern.length() > 0) {
                tmpNames.add(pattern);
            }
        }

        String[] result = (String[])tmpNames.toArray(new String[0]);
        return result;
    }
        
    /**
     * Read includefile ot excludefile if not already done so.
     */
    private void readFiles() throws ExecutionException {
        if (!filesRead) {
            filesRead = true;
            if (includeFile != null) {
                readPatterns(includeFile, includeList);
            }
            if (excludeFile != null) {
                readPatterns(excludeFile, excludeList);
            }
        }
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/xml/AntLibParser.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/xml/AntLibParser.java
@@ -1,285 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.xml;

 import java.io.*;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.*;
 import javax.xml.parsers.*;
 import org.apache.ant.core.support.*;
 import org.apache.ant.core.execution.*;
 import org.xml.sax.*;
 import org.xml.sax.helpers.DefaultHandler;

 /**
 * Parses the TASK-INF/antlib.xml file of an ant library
 * component. An Ant library may contains tasks, apsects and
 * other ant plug in components
 */ 
 public class AntLibParser {
    public static final String TASK_ELEMENT = "taskdef";
    public static final String CONVERTER_ELEMENT = "converter";
    public static final String ASPECT_ELEMENT = "aspect";
    
    /**
     * The factory used to create SAX parsers.
     */
    private SAXParserFactory parserFactory;

    /**
     * Parse the library definition
     *
     * @param libSource the URL from where the library XML is read.
     *
     * @throws SAXParseException if there is a problem parsing the task definitions
     */
    public AntLibrary parseAntLibrary(URL libSource, ClassLoader componentLoader) 
            throws ConfigException {
        try {
            parserFactory = SAXParserFactory.newInstance();
            SAXParser saxParser = parserFactory.newSAXParser();
            XMLReader xmlReader = saxParser.getXMLReader();

            AntLibRootHandler rootHandler = new AntLibRootHandler(libSource, xmlReader, componentLoader);
            saxParser.parse(libSource.toString(), rootHandler);
            return rootHandler.getAntLibrary();
        }
        catch (SAXParseException e) {
            throw new ConfigException(e.getMessage(), e, 
                                      new Location(libSource.toString(), 
                                                   e.getLineNumber(), e.getColumnNumber()));
        }
        catch (ParserConfigurationException e) {
            throw new ConfigException("Unable to parse Ant library component", e, 
                                      new Location(libSource.toString()));
        }
        catch (SAXException e) {
            throw new ConfigException("Unable to parse Ant library component", e, 
                                      new Location(libSource.toString()));
        }
        catch (IOException e) {
            throw new ConfigException("Unable to parse Ant library component", e, 
                                      new Location(libSource.toString()));
        }
    }
    
    /**
     * The root handler handles the antlib element. An ant lib may
     * contain a number of different types of elements
     * <ul>
     *    <li>taskdef</li>
     *    <li>aspect</li>
     *    <li>converter</li>
     * </ul>
     */
    private class AntLibRootHandler extends RootHandler {
        static private final int STATE_LOOKING_FOR_ROOT = 1;
        static private final int STATE_ROOT_SEEN = 2;
        static private final int STATE_FINISHED = 3;
        
        private int state = STATE_LOOKING_FOR_ROOT;
        
        /**
         * The AntLibrary that will be defined by parsing the library's definition
         * file.
         */
        private AntLibrary library = null;

        private ClassLoader componentLoader = null;

        /**
         * Create an Ant Library Root Handler.
         *
         * @param taskdefSource the URL from where the task definitions exist
         * @param reader the XML parser.
         */
        public AntLibRootHandler(URL taskdefSource, XMLReader reader, ClassLoader componentLoader) {
            super(taskdefSource, reader);
            this.componentLoader = componentLoader;
        }
    
        /**
         * Get the library which has been parsed.
         *
         * @return an AntLibary with the library definitions
         */
        public AntLibrary getAntLibrary() {
            return library;
        }

        /**
         * Start a new element in the root. This must be a taskdefs element
         * All other elements are invalid.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            switch (state) {
                case STATE_LOOKING_FOR_ROOT:
                    if (qualifiedName.equals("antlib")) {
                        state = STATE_ROOT_SEEN;
                        library = new AntLibrary();
                    }
                    else {
                        throw new SAXParseException("An Ant library component must start with an " +
                                                    "<antlib> element and not with <" + 
                                                     qualifiedName + ">", getLocator());
                    }
                    break;
                case STATE_ROOT_SEEN:                                                     
                    if (qualifiedName.equals(TASK_ELEMENT)) {
                        createTaskDef(attributes);
                    }
                    else if (qualifiedName.equals(CONVERTER_ELEMENT)) {
                        createConverterDef(attributes);
                    } 
                    else if (qualifiedName.equals(ASPECT_ELEMENT)) {
                        createAspectHandler(attributes);
                    } 
                    else {
                        throw new SAXParseException("Unrecognized element <" + 
                                                     qualifiedName + "> in Ant library definition", getLocator());
                    }
                    break;
            }
        }
        

        public void createTaskDef(Attributes attributes) throws SAXParseException {
            Set validAttributes = new HashSet();
            validAttributes.add("name");
            validAttributes.add("classname");
            Map attributeValues 
                = AttributeValidator.validateAttributes(TASK_ELEMENT, attributes, 
                                                        validAttributes, getLocator());
            String taskName = (String)attributeValues.get("name");
            String className = (String)attributeValues.get("classname");
            if (taskName == null) {
                throw new SAXParseException("'name' attribute is required in a <" 
                                            + TASK_ELEMENT + "> element",
                                            getLocator());
            }
            if (className == null) {
                throw new SAXParseException("'classname' attribute is required in a " + 
                                            "<" + TASK_ELEMENT + "> element", getLocator());
            }
            
            TaskDefinition taskdef = new TaskDefinition(getSourceURL(), taskName, className, componentLoader);
            library.addTaskDefinition(taskdef);
        }                        
            
        public void createConverterDef(Attributes attributes) throws SAXParseException {
            Set validAttributes = new HashSet();
            validAttributes.add("target");
            validAttributes.add("classname");
            Map attributeValues 
                = AttributeValidator.validateAttributes(CONVERTER_ELEMENT, attributes, 
                                                        validAttributes, getLocator());
            String targetClassName = (String)attributeValues.get("target");
            String className = (String)attributeValues.get("classname");
            if (targetClassName == null) {
                throw new SAXParseException("'target' attribute is required in a <" 
                                            + CONVERTER_ELEMENT + "> element",
                                            getLocator());
            }
            if (className == null) {
                throw new SAXParseException("'classname' attribute is required in a " + 
                                            "<" + CONVERTER_ELEMENT + "> element", getLocator());
            }
            
            ConverterDefinition converterDef 
                = new ConverterDefinition(getSourceURL(), className, targetClassName, componentLoader);
            library.addConverterDefinition(converterDef);
        }                        

        public void createAspectHandler(Attributes attributes) throws SAXParseException {
            Set validAttributes = new HashSet();
            validAttributes.add("prefix");
            validAttributes.add("classname");
            Map attributeValues 
                = AttributeValidator.validateAttributes(ASPECT_ELEMENT, attributes, 
                                                        validAttributes, getLocator());
            String aspectPrefix = (String)attributeValues.get("prefix");
            String aspectClassname  = (String)attributeValues.get("classname");
            if (aspectPrefix == null) {
                throw new SAXParseException("'prefix' attribute is required in a <" 
                                            + ASPECT_ELEMENT + "> element",
                                            getLocator());
            }
            if (aspectClassname == null) {
                throw new SAXParseException("'classname' attribute is required in a " + 
                                            "<" + ASPECT_ELEMENT + "> element", getLocator());
            }
            
            AspectDefinition aspectDef 
                = new AspectDefinition(getSourceURL(), aspectPrefix, aspectClassname, componentLoader);
            library.addAspectDefinition(aspectDef);
        }
                                
        public void endElement(String namespaceURI, String localName, String qName) {
            if (state == STATE_ROOT_SEEN && qName.equals("antlib")) {
                state = STATE_FINISHED;
            }
        }
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/core/xml/AttributeValidator.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/xml/AttributeValidator.java
@@ -1,112 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.xml;

 import org.xml.sax.helpers.DefaultHandler;
 import org.xml.sax.*;
 import java.util.*;


 /**
 * Validates and extracts attribute values from a set of element attributes.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public abstract class AttributeValidator {
    static public Map validateAttributes(String elementName, Attributes attributes, 
                                          Set validAttributes, Locator locator) 
        throws SAXParseException {
            
        return validateAttributes(elementName, attributes, null, validAttributes, locator);
    }

    static public Map validateAttributes(String elementName, Attributes attributes, Map aspects,
                                          Set validAttributes, Locator locator) 
        throws SAXParseException {
            
        Map attributeValues = new HashMap();    
        Set invalidAttributes = new HashSet();
        for (int i = 0; i < attributes.getLength(); ++i) {
            String attributeName = attributes.getQName(i);
            String attributeValue = attributes.getValue(i);
            if (validAttributes.contains(attributeName)) {
                attributeValues.put(attributeName, attributeValue);
            }
            else if (aspects != null && attributeName.indexOf(":") != -1) {
                aspects.put(attributeName, attributeValue);
            }
            else {
                invalidAttributes.add(attributeName);
            }
        }
        
        if (invalidAttributes.size() != 0) {
            StringBuffer message = new StringBuffer();
            boolean justOne = invalidAttributes.size() == 1;
            message.append(justOne ? "The attribute " : "The attributes ");
            for (Iterator i = invalidAttributes.iterator(); i.hasNext();) {
                String attributeName = (String)i.next();
                message.append(attributeName + " ");
            }
            message.append(justOne ? "is " : "are ");
            message.append("not valid for the <" + elementName + "> element.");
            
            throw new SAXParseException(message.toString(), locator);
        }
        
        return attributeValues;
    }

 }
--- a/proposal/mutant/src/main/org/apache/ant/core/xml/ElementHandler.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/xml/ElementHandler.java
@@ -1,109 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.xml;

 import org.xml.sax.helpers.DefaultHandler;
 import org.xml.sax.*;

 /**
 * An Element Handler is a handler which handles a single element by becoming
 * the handler for the parser while processing the element. Any sub elements 
 * must be delegated to separate handlers. When this element is finished, 
 * control returns to the parent handler.
 */ 
 public abstract class ElementHandler extends DefaultHandler {
    private XMLReader reader;
    private ContentHandler parent;
    private Locator locator;

    public ElementHandler(XMLReader reader, ContentHandler parent,
                          Locator locator) {
        this.reader = reader;
        this.parent = parent;
        this.locator = locator;
        reader.setContentHandler(this);
    }

    /**
     * This element is finished - complete any necessary processing.
     */
    protected void finish() {
    }

    /**
     * Get the XML Reader being used to parse the XML.
     *
     * @return the XML Reader.
     */
    protected XMLReader getXMLReader() {
        return reader;
    }
    
    /**
     * Get the locator used to locate elements in the XML source as
     * they are parsed.
     *
     * @return the locator object which can be used to determine an elements location
     *         within the XML source
     */
    protected Locator getLocator() {
        return locator;
    }

    public void endElement(String namespaceURI, String localName, String qName) {
        finish();
        reader.setContentHandler(parent);
    }
 }
--- a/proposal/mutant/src/main/org/apache/ant/core/xml/RootHandler.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/xml/RootHandler.java
@@ -1,131 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.xml;

 import org.xml.sax.helpers.DefaultHandler;
 import org.xml.sax.*;
 import java.net.URL;

 /**
 * Handle the root of a XML parse
 */
 public abstract class RootHandler extends DefaultHandler {
    /**
     * Locator used to identify where in the build source particular elements
     * occur.
     */
    private Locator locator;
    
    /**
     * The actual XML parser used to parse the build source
     */
    private XMLReader reader;
    
    /**
     * The URL from which the XML source is being read.
     */
    private URL sourceURL;

    /**
     * Create a Root Handler.
     *
     * @param sourceURL the URL containing the XML source
     * @param reader the XML parser.
     */
    public RootHandler(URL sourceURL, XMLReader reader) {
        this.sourceURL = sourceURL;
        this.reader = reader;
    }
    
    /**
     * Set the locator to use when parsing elements. This is passed onto
     * child elements.
     *
     * @param locator the locator for locating elements in the build source.
     */
    public void setDocumentLocator(Locator locator) {
        this.locator = locator;
    }

    /**
     * Get the XML Reader being used to parse the XML.
     *
     * @return the XML Reader.
     */
    protected XMLReader getXMLReader() {
        return reader;
    }
    
    /**
     * Get the locator used to locate elements in the XML source as
     * they are parsed.
     *
     * @return the locator object which can be used to determine an elements location
     *         within the XML source
     */
    protected Locator getLocator() {
        return locator;
    }

    /**
     * Get the source URL
     *
     * @return a URL identifiying from where the XML is being read.
     */
    public URL getSourceURL() {
        return sourceURL;
    }
 }
    
--- a/proposal/mutant/src/main/org/apache/ant/core/xml/XMLProjectParser.java
+++ b/proposal/mutant/src/main/org/apache/ant/core/xml/XMLProjectParser.java
@@ -1,831 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.core.xml;

 import java.io.*;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.*;
 import javax.xml.parsers.*;
 import org.apache.ant.core.model.*;
 import org.apache.ant.core.support.*;
 import org.xml.sax.*;
 import org.xml.sax.helpers.DefaultHandler;

 /**
 * Parses a project from an XML source using a SAX Parser.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class XMLProjectParser {
    private Stack recursionCheck = new Stack();
    
    /**
     * The factory used to create SAX parsers.
     */
    private SAXParserFactory parserFactory;

    static private Location getLocation(Locator locator) {
        return new Location(locator.getSystemId(), locator.getLineNumber(),
                            locator.getColumnNumber());
    }                            

    /**
     * Parse a build file form the given URL.
     *
     * @param buildSource the URL from where the build source may be read.
     *
     * @throws SAXParseException if there is a problem parsing the build file.
     */
    public Project parseBuildFile(URL buildSource) 
            throws ConfigException {
        try {
            parserFactory = SAXParserFactory.newInstance();
            SAXParser saxParser = parserFactory.newSAXParser();
            XMLReader xmlReader = saxParser.getXMLReader();

            recursionCheck.push(buildSource);
            ProjectRootHandler projectRootHandler 
                = new ProjectRootHandler(buildSource, xmlReader);
            saxParser.parse(buildSource.toString(), projectRootHandler);
            return projectRootHandler.getProject();
        }
        catch (SAXParseException e) {
            throw new ConfigException(e.getMessage(), e, 
                                      new Location(buildSource.toString(), 
                                                   e.getLineNumber(), e.getColumnNumber()));
        }
        catch (NoProjectReadException e) {
            throw new ConfigException("No project defined in build source", e, 
                                      new Location(buildSource.toString()));
       }
        catch (ParserConfigurationException e) {
            throw new ConfigException("Unable to parse project: " + e.getMessage(), e, 
                                      new Location(buildSource.toString()));
        }
        catch (SAXException e) {
            throw new ConfigException("Unable to parse project: " + e.getMessage(), e, 
                                      new Location(buildSource.toString()));
        }
        catch (IOException e) {
            throw new ConfigException("Unable to parse project: " + e.getMessage(), e, 
                                      new Location(buildSource.toString()));
        }
    }
    
    /**
     * The root handler handles the start of parsing. This element looks for the 
     * root element which must be a project element. It then delegates handling of the
     * project element to a project handler from which it extracts the parsed project.
     */
    private class ProjectRootHandler extends RootHandler {
        /**
         * The project handler created to parse the project element.
         */
        ProjectHandler projectHandler;
        
        /**
         * Create a Root Handler.
         *
         * @param buildSource the URL containing the build definition
         * @param reader the XML parser.
         */
        public ProjectRootHandler(URL buildSource, XMLReader reader) {
            super(buildSource, reader);
        }

        /**
         * Start a new element in the root. This must be a project element
         * All other elements are invalid.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                  Attributes attributes) throws SAXParseException {
            if (qualifiedName.equals("project")) {
                projectHandler = new ProjectHandler(getXMLReader(), this, 
                                                    getLocator(), attributes, getSourceURL());
            } else {
                throw new SAXParseException("Build file should start with a <project> element not <" + 
                                             qualifiedName + ">", getLocator());
            }
        }
        
        /**
         * Get the project that has been parsed from the element
         *
         * @return the project that has been parsed from the build osurce
         * 
         * @throws NoProjectReadException thrown if no project was read in.
         */
        public Project getProject() throws NoProjectReadException {
            if (projectHandler == null) {
                throw new NoProjectReadException();
            }
            return projectHandler.getProject();
        }
    }
    
    /**
     * Root Handler for include elements.
     * 
     * Includes must contain either a project (which is being extended) or 
     * a fragment element which contains the fragment to be included.
     */
    private class IncludeRootHandler extends RootHandler {
        /**
         * The project into which the fragment is to be included.
         */
        private Project project;
        
        /**
         * Create an Include Root Handler.
         *
         * @param buildSource the URL containing the fragment definition
         * @param reader the XML parser.
         * @param project the project into which the fragment's elements will be included.
         */
        public IncludeRootHandler(URL buildSource, XMLReader reader, Project project) {
            super(buildSource, reader);
            this.project = project;
        }

        /**
         * Start a new element in the include root. This must be a project element
         * or a fragment element. All other elements are invalid.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                  Attributes attributes) throws SAXParseException {
            if (qualifiedName.equals("project") ||
                qualifiedName.equals("fragment")) {
                // if it is a fragment, it must have no attributes
                // any project attributes are ignored
                if (qualifiedName.equals("fragment") && attributes.getLength() != 0) {
                    throw new SAXParseException("<fragment> element may not have any attributes", 
                                                getLocator());
                }                                                
                new ProjectHandler(getXMLReader(), this, getLocator(), 
                                   getSourceURL(), project);
            } else {
                throw new SAXParseException("An included file should contain either a " +
                                            "<project> or <fragment> element and not a <" + 
                                            qualifiedName + "> element", getLocator());
            }
        }
    }
    
    /**
     * Element to parse the project element.
     *
     * The project handler creates a number of different handlers to which it
     * delegates processing of child elements.
     */
    private class ProjectHandler extends ElementHandler {
        /**
         * The project being parsed.
         */
        private Project project;
        
        /**
         * The sourceURL for the current content being added to the project.
         */
        private URL sourceURL;

        /**
         * Create a ProjectHandler to read in a complete project.
         * 
         * @param xmlReader the XML parser being used to parse the project element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param attributes the project element's attributes.
         * @param projectSource the URL from which the XML source is being parsed.
         */
        public ProjectHandler(XMLReader xmlReader, ContentHandler parent,
                              Locator locator, Attributes attributes, URL projectSource) 
            throws SAXParseException {
                
            super(xmlReader, parent, locator);
            this.sourceURL = projectSource;                            
            project = new Project(projectSource, getLocation(locator));

            String base = null;
            String defaultTarget = null;
            String projectName = null;
            
            Map aspects = new HashMap();
            for (int i = 0; i < attributes.getLength(); ++i) {
                String attributeName = attributes.getQName(i);
                String attributeValue = attributes.getValue(i);
                if (attributeName.equals("base")) {
                    base = attributeValue;
                }
                else if (attributeName.equals("default")) {
                    defaultTarget = attributeValue;
                }
                else if (attributeName.equals("name")) {
                    projectName = attributeValue;
                }
                else if (attributeName.indexOf(":") != -1) {
                    // potential aspect attribute
                    aspects.put(attributeName, attributeValue);
                }
                else {
                    throw new SAXParseException("The attribute '" + attributeName + "' is not " + 
                                                "supported by the <project> element", getLocator());
                }
            }
            
            project.setDefaultTarget(defaultTarget);
            project.setBase(base);
            project.setName(projectName);
            project.setAspects(aspects);
        }
        
        /**
         * Create a Project handler for an included fragment. The elements
         * from the fragment are added to the given project.
         *
         * @param xmlReader the XML parser being used to parse the project element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param includeSource the URL from which the XML source is being included.
         * @param project the project to which the included fragments elements are added.
         */
        public ProjectHandler(XMLReader xmlReader, ContentHandler parent,
                              Locator locator, URL includeSource, Project project) {
            super(xmlReader, parent, locator);
            this.sourceURL = includeSource;                            
            this.project = project;
        }
        
        /**
         * Start a new element in the project. Project currently handle the 
         * following elements
         * <ul>
         *   <li>import</li>
         *   <li>include</li>
         *   <li>target</li>
         * </ul>
         *
         * Everything else is treated as a task.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            if (qualifiedName.equals("import")) {
                ImportHandler importHandler 
                    = new ImportHandler(getXMLReader(), this, getLocator(), 
                                        attributes, sourceURL);
                try {                                        
                    project.importProject(importHandler.getImportName(), 
                                      importHandler.getImportedProject());
                }
                catch (ProjectModelException e) {
                    throw new SAXParseException(e.getMessage(), getLocator(), e);
                }
            }
            else if (qualifiedName.equals("include")) {
                IncludeHandler includeHandler 
                    = new IncludeHandler(getXMLReader(), this, getLocator(), 
                                         attributes, sourceURL, project);
            }
            else if (qualifiedName.equals("target")) {
                TargetHandler targetHandler 
                    = new TargetHandler(getXMLReader(), this, getLocator(), attributes);
                try {                    
                    project.addTarget(targetHandler.getTarget());
                }
                catch (ProjectModelException e) {
                    throw new SAXParseException(e.getMessage(), getLocator(), e);
                }
            }
            else {
                // everything else is a task
                TaskElementHandler taskElementHandler 
                    = new TaskElementHandler(getXMLReader(), this, getLocator(), 
                                      attributes, qualifiedName);
                project.addTask(taskElementHandler.getTaskElement());
            }
        }
    
        /**
         * Get the project that has been parsed from the XML source
         *
         * @return the project model of the parsed project.
         */
        public Project getProject() {
            return project;
        }
    }
    
    /**
     * The import handler handles the importing of one project into another.
     * 
     * The project to be imported is parsed with a new parser and then added to the
     * current project under the given import name
     */
    private class ImportHandler extends ElementHandler {
        /**
         * The attribute used to name the import.
         */
        static public final String IMPORT_NAME_ATTR = "name";
        
        /**
         * The attribute name used to locate the project to be imported.
         */
        static public final String IMPORT_SYSTEMID_ATTR = "project";
        
        /**
         * The project that has been imported.
         */
        private Project importedProject;
        
        /**
         * The name under which the project is being imported.
         */
        private String importName;
        
        /**
         * The systemId (URL) where the project is to be imported from.
         */
        private String projectSystemId;

        /**
         * Create an import handler to import a project.
         *
         * @param xmlReader the XML parser being used to parse the import element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param attributes attributes of the import statement.
         * @param importingSource the URL of the importing source.
         */
        public ImportHandler(XMLReader xmlReader, ContentHandler parent,
                             Locator locator, Attributes attributes, URL importingSource) 
                throws SAXParseException {
            super(xmlReader, parent, locator);
            for (int i = 0; i < attributes.getLength(); ++i) {
                String attributeName = attributes.getQName(i);
                String attributeValue = attributes.getValue(i);
                if (attributeName.equals(IMPORT_NAME_ATTR)) {
                    importName = attributeValue;
                }
                else if (attributeName.equals(IMPORT_SYSTEMID_ATTR)) {
                    projectSystemId = attributeValue;
                }
                else {
                    throw new SAXParseException("Attribute " + attributeName + 
                                                " is not allowed in an <import> element", getLocator());
                }                                                    
            }
            
            if (importName == null) {
                throw new SAXParseException("Attribute " + IMPORT_NAME_ATTR + 
                                            " is required in an <import> element", getLocator());
            }
            
            if (projectSystemId == null) {
                throw new SAXParseException("Attribute " + IMPORT_SYSTEMID_ATTR + 
                                            " is required in an <import> element", getLocator());
            }

            // create a new parser to read this project relative to the 
            // project's URI
            try {
                URL importURL = new URL(importingSource, projectSystemId);
                SAXParser importSAXParser = parserFactory.newSAXParser();
                XMLReader importXMLReader = importSAXParser.getXMLReader();
    
                
                if (recursionCheck.contains(importURL)) {
                    throw new SAXParseException("Circular import detected when importing '" + 
                                                importURL + "'", getLocator());
                }
                recursionCheck.push(importURL);                                                
                ProjectRootHandler importRootHandler = new ProjectRootHandler(importURL, importXMLReader);
                importSAXParser.parse(importURL.toString(), importRootHandler);
                if (recursionCheck.pop() != importURL) {
                    throw new RuntimeException("Failure to pop expected element off recursion stack");
                }
                importedProject = importRootHandler.getProject();
            }
            catch (SAXParseException e) {
                throw e;
            }
            catch (NoProjectReadException e) {
                throw new SAXParseException("No project was imported from " + projectSystemId, 
                                            getLocator());
            }
            catch (MalformedURLException e) {
                throw new SAXParseException("Unable to import project from " + projectSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (ParserConfigurationException e) {
                throw new SAXParseException("Unable to parse project imported from " + projectSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (SAXException e) {
                throw new SAXParseException("Unable to parse project imported from " + projectSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (IOException e) {
                throw new SAXParseException("Error reading project imported from " + projectSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
        }
        
        /**
         * Import does not support nested elements. This method will always throw an
         * exception
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException always.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            // everything is a task
            throw new SAXParseException("<import> does not support nested elements", getLocator()); 
        }
        
        /**
         * Get the project imported.
         *
         * @return an imported Project.
         */
        public Project getImportedProject() {
            return importedProject;
        }
        
        /**
         * Get the name under which the project is imported.
         *
         * @return the import name of the project
         */
        public String getImportName() {
            return importName;
        }
    }

    /**
     * The include handler is used to read in included projects or
     * fragments into a project.
     */
    private class IncludeHandler extends ElementHandler {
        /**
         * The attribute name which identifies the fragment to be included
         */
        static public final String INCLUDE_SYSTEMID_ATTR = "fragment";
        
        /**
         * The system id of the fragment to be included.
         */
        private String includeSystemId;

        /**
         * Create an IncludeHandler to include an element into the
         * current project
         *       
         * @param xmlReader the XML parser being used to parse the include element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param attributes attributes of the include statement.
         * @param includingSource the URL of the including source.
         * @param project the project into which the included elements are added.
         */
        public IncludeHandler(XMLReader xmlReader, ContentHandler parent,
                              Locator locator, Attributes attributes, URL includingSource,
                              Project project) 
                throws SAXParseException {
            super(xmlReader, parent, locator);
            for (int i = 0; i < attributes.getLength(); ++i) {
                String attributeName = attributes.getQName(i);
                String attributeValue = attributes.getValue(i);
                if (attributeName.equals(INCLUDE_SYSTEMID_ATTR)) {
                    includeSystemId = attributeValue;
                }
                else {
                    throw new SAXParseException("Attribute " + attributeName + 
                                                " is not allowed in an <include> element", getLocator());
                }                                                    
            }
            
            if (includeSystemId == null) {
                throw new SAXParseException("Attribute " + INCLUDE_SYSTEMID_ATTR + 
                                            " is required in an <include> element", getLocator());
            }

            // create a new parser to read this project relative to the 
            // project's URI
            try {
                URL includeURL = new URL(includingSource, includeSystemId);
                SAXParser includeSAXParser = parserFactory.newSAXParser();
                XMLReader includeXMLReader = includeSAXParser.getXMLReader();
    
                if (recursionCheck.contains(includeURL)) {
                    throw new SAXParseException("Circular include detected when including '" + 
                                                includeURL + "'", getLocator());
                }
                recursionCheck.push(includeURL);                                                
                IncludeRootHandler includeRootHandler 
                    = new IncludeRootHandler(includeURL, includeXMLReader, project);
                includeSAXParser.parse(includeURL.toString(), includeRootHandler);
                if (recursionCheck.pop() != includeURL) {
                    throw new RuntimeException("Failure to pop expected element off recursion stack");
                }
            }
            catch (SAXParseException e) {
                throw e;
            }
            catch (MalformedURLException e) {
                throw new SAXParseException("Unable to include " + includeSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (ParserConfigurationException e) {
                throw new SAXParseException("Unable to parse include " + includeSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (SAXException e) {
                throw new SAXParseException("Unable to parse include " + includeSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
            catch (IOException e) {
                throw new SAXParseException("Error reading include " + includeSystemId + 
                                            ": " + e.getMessage(), 
                                            getLocator());
            }
        }

        /**
         * Include does not support nested elements. This method will always throw an
         * exception
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException always.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            // everything is a task
            throw new SAXParseException("<include> does not support nested elements", getLocator()); 
        }
        
    }

    /**
     * A TargetHandler process the Target element.
     */
    private class TargetHandler extends ElementHandler {
        /**
         * The target being configured.
         */
        private Target target;
        
        /**
         * Create a Target handler. Event element in a target is 
         * considered to be a task
         *
         * @param xmlReader the XML parser being used to parse the target element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param attributes attributes of the target
         */
        public TargetHandler(XMLReader xmlReader, ContentHandler parent,
                             Locator locator, Attributes attributes) 
                throws SAXParseException {
            super(xmlReader, parent, locator);
            String targetName = null;
            String depends = null;
            Map aspects = new HashMap();
            for (int i = 0; i < attributes.getLength(); ++i) {
                String attributeName = attributes.getQName(i);
                String attributeValue = attributes.getValue(i);
                if (attributeName.equals("name")) {
                    targetName = attributeValue;
                }
                else if (attributeName.equals("depends")) {
                    depends = attributeValue;
                }
                else if (attributeName.indexOf(":") != -1) {
                    // potential aspect attribute
                    aspects.put(attributeName, attributeValue);
                }
                else {
                    throw new SAXParseException("The attribute '" + attributeName + "' is not " + 
                                                "supported by the <target> element", getLocator());
                }
            }
            if (targetName == null) {
                throw new SAXParseException("Targets must have a name attribute", locator);
            }
            target = new Target(getLocation(locator), targetName);
            target.setAspects(aspects);
            
            if (depends != null) {
                StringTokenizer tokenizer = new StringTokenizer(depends, ",");
                while (tokenizer.hasMoreTokens()) {
                    String dependency = tokenizer.nextToken();
                    target.addDependency(dependency);
                }
            }
        }

        /*
         * Process an element within this target. All elements within the target are 
         * treated as tasks.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            // everything is a task
            TaskElementHandler taskHandler 
                = new TaskElementHandler(getXMLReader(), this, getLocator(), 
                                                 attributes, qualifiedName);
            target.addTask(taskHandler.getTaskElement());
        }
        
        /**
         * Get the target parsed by this handler.
         *
         * @return the Target model object parsed by this handler.
         */
        public Target getTarget() {
            return target;
        }
    }

    /**
     * A TaskElementHandler parses the task elements of a build
     */
    private class TaskElementHandler extends ElementHandler  {
        /**
         * The task element being parsed by this handler.
         */
        private TaskElement taskElement;
        
        /**
         * Create a task element handler to parse a task element
         *
         * @param xmlReader the XML parser being used to parse the task element.
         * @param parent the parent element handler.
         * @param locator the SAX locator object used to associate elements with source
         *        locations.
         * @param attributes attributes of the task element
         * @param elementTagName the name of the task element.
         */
        public TaskElementHandler(XMLReader xmlReader, ContentHandler parent, Locator locator, 
                                          Attributes attributes, String elementTagName) {
            super(xmlReader, parent, locator);     
            taskElement 
                = new TaskElement(getLocation(locator), elementTagName);
                
            Map aspects = new HashMap();
            for (int i = 0; i < attributes.getLength(); ++i) {
                String attributeName = attributes.getQName(i);
                String attributeValue = attributes.getValue(i);
                if (attributeName.indexOf(":") != -1) {
                    // potential aspect attribute
                    aspects.put(attributeName, attributeValue);
                }
                else {
                    taskElement.addAttribute(attributeName, attributeValue);
                }
            }
            taskElement.setAspects(aspects);
        }
        
        /** 
         * Process a nested element of this task element. All nested elements
         * of a taskElement are themselves taskElements.
         *
         * @param uri The Namespace URI.
         * @param localName The local name (without prefix).
         * @param qualifiedName The qualified name (with prefix)
         * @param attributes The attributes attached to the element. 
         *
         * @throws SAXParseException if there is a parsing problem.
         */
        public void startElement(String uri, String localName, String qualifiedName,
                                 Attributes attributes) throws SAXParseException {
            // everything within a task element is also a task element
            TaskElementHandler nestedHandler 
                = new TaskElementHandler(getXMLReader(), this, getLocator(), 
                                                 attributes, qualifiedName);
            taskElement.addTaskElement(nestedHandler.getTaskElement());                                         
        }
        
        public void characters(char[] buf, int start, int end) throws SAXParseException {
            taskElement.addText(new String(buf, start, end));
        }

        /**
         * Get the task element being parsed by this handler.
         *
         * @return the TaskElement being parsed.
         */
        public TaskElement getTaskElement() {
            return taskElement;
        }
    }
    
    /**
     * A NoProjectReadException is used to indicate that a project
     * was not read from the particular source. This will happen
     * if the source is empty.
     */
    private class NoProjectReadException extends Exception {
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/frontend/BuildLogger.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/BuildLogger.java
@@ -1,94 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import org.apache.ant.core.execution.*;

 import java.io.*;

 /**
 * Interface used by Ant to log the build output. 
 *
 * A build logger is a build listener which has the 'right' to send output to the
 * ant log, which is usually System.out unles redirected by the -logfile option.
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */
 public interface BuildLogger extends BuildListener {
    /**
     * Set the msgOutputLevel this logger is to respond to.
     *
     * Only messages with a message level lower than or equal to the given level are 
     * output to the log.
     *
     * @param level the logging level for the logger.
     */
    public void setMessageOutputLevel(int level);
    
    /**
     * Set the output stream to which this logger is to send its output.
     *
     * @param output the output stream for the logger.
     */
    public void setOutputPrintStream(PrintStream output);
    
    /**
     * Set the output stream to which this logger is to send error messages.
     *
     * @param err the error stream for the logger.
     */
    public void setErrorPrintStream(PrintStream err);
    
 }
--- a/proposal/mutant/src/main/org/apache/ant/frontend/Commandline.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/Commandline.java
@@ -1,311 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import java.io.*;
 import java.net.*;
 import java.util.*;
 import javax.xml.parsers.*;
 import org.xml.sax.SAXParseException;
 import java.lang.reflect.*;

 import org.apache.ant.core.execution.*;
 import org.apache.ant.core.support.*;
 import org.apache.ant.core.xml.*;
 import org.apache.ant.core.config.*;
 import org.apache.ant.core.model.*;

 /**
 * This is the command line front end to end. It drives the core
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class Commandline {
    /** The default build file name */
    static public final String DEFAULT_BUILD_FILENAME = "build.ant";

    /** Stream that we are using for logging */
    private PrintStream out = System.out;

    /** Stream that we are using for logging error messages */
    private PrintStream err = System.err;

    /** Names of classes to add as listeners to project */
    private List listeners = new ArrayList(2);

    /** The list of targets to be evaluated in this invocation */
    private List targets = new ArrayList(4);

    /** Our current message output status. Follows Project.MSG_XXX */
    private int messageOutputLevel = BuildEvent.MSG_VERBOSE;

    /**
     * This is the build file to run. By default it is a file: type URL
     * but other URL protocols can be used.
     */
    private URL buildFileURL;
    
    /**
     * The Ant logger class. There may be only one logger. It will have the
     * right to use the 'out' PrintStream. The class must implements the BuildLogger
     * interface
     */
    private String loggerClassname = null;

    public static void start(String[] args) {
        // create a command line and use it to run ant
        Commandline commandline = new Commandline();
        commandline.runAnt(args);
    }
    
    public void runAnt(String[] args) {
        ExecutionFrame mainFrame = null;
        try {
            parseArguments(args);
            Project project = getProject();
            for (Iterator i = project.getTargets(); i.hasNext();) {
                Target target = (Target)i.next();
            }

            // Get the list of library components 
            AntLibrary[] libraries = ComponentManager.getComponents();

            mainFrame = new ExecutionFrame(project, libraries);
            
            // We iterate through all nodes of all projects and make sure every node is OK
            Map state = new HashMap();
            Stack visiting = new Stack();
            List dependencyOrder = new ArrayList();
    
            mainFrame.checkTargets(dependencyOrder, state, visiting);
            addBuildListeners(mainFrame);
        }
        catch (AntException e) {
            Location location = e.getLocation();
            Throwable cause = e.getCause();
            if (location != null && location != Location.UNKNOWN_LOCATION) {
                System.out.print(location);
            }
            System.out.println(e.getMessage());
            
            if (cause != null) {
                System.out.println("Root cause: " + cause.getClass().getName() + ": " + cause.getMessage());
            }
            
            System.exit(1);
        }
        
        try {
            mainFrame.runBuild(targets);
            System.exit(0);
        }
        catch (Exception e) {
            System.exit(1);
        }
    }
    
    protected void addBuildListeners(ExecutionFrame frame) 
            throws ConfigException {

        // Add the default listener
        frame.addBuildListener(createLogger());

        for (Iterator i = listeners.iterator(); i.hasNext(); ) {
            String className = (String) i.next();
            try {
                BuildListener listener =
                    (BuildListener) Class.forName(className).newInstance();
                frame.addBuildListener(listener);
            }
            catch(Exception exc) {
                throw new ConfigException("Unable to instantiate listener " + className, exc);
            }
        }
    }
    
    /**
     *  Creates the default build logger for sending build events to the ant log.
     */
    private BuildLogger createLogger() throws ConfigException {
        BuildLogger logger = null;
        if (loggerClassname != null) {
            try {
                logger = (BuildLogger)(Class.forName(loggerClassname).newInstance());
            }
            catch (ClassCastException e) {
                System.err.println("The specified logger class " + loggerClassname +
                                         " does not implement the BuildLogger interface");
                throw new ConfigException("Unable to instantiate logger " + loggerClassname, e);
            }
            catch (Exception e) {
                System.err.println("Unable to instantiate specified logger class " +
                                           loggerClassname + " : " + e.getClass().getName());
                throw new ConfigException("Unable to instantiate logger " + loggerClassname, e);
            }
        }
        else {
            logger = new DefaultLogger();
        }

        logger.setMessageOutputLevel(messageOutputLevel);
        logger.setOutputPrintStream(out);
        logger.setErrorPrintStream(err);

        return logger;
    }


    /**
     * Parse the command line arguments.
     */
    private void parseArguments(String[] args) throws ConfigException {
        for (int i = 0; i < args.length; i++) {
            String arg = args[i];

            if (arg.equals("-buildfile") || arg.equals("-file") || arg.equals("-f")) {
                try {
                    String url = args[i+1];
                    if (url.indexOf(":") == -1) {
                        File file = new File(url);
                        String uri = "file:" + file.getAbsolutePath().replace('\\', '/');
                        for (int index = uri.indexOf('#'); index != -1; index = uri.indexOf('#')) {
                            uri = uri.substring(0, index) + "%23" + uri.substring(index+1);
                        }
                        buildFileURL = new URL(uri);
                        // We convert any hash characters to their URL escape.
                    }
                    else {
                        buildFileURL = new URL(url);
                    }
                    i++;
                }
                catch (MalformedURLException e) {
                    System.err.println("Buildfile is not valid: " + e.getMessage());
                    throw new ConfigException("Build file is not valid", e);
                } 
                catch (ArrayIndexOutOfBoundsException e) {
                    System.err.println("You must specify a buildfile when " +
                                       "using the -buildfile argument");
                    return;
                }
            }
            else if (arg.equals("-logfile") || arg.equals("-l")) {
                try {
                    File logFile = new File(args[i+1]);
                    i++;
                    out = new PrintStream(new FileOutputStream(logFile));
                    err = out;
                } catch (IOException ioe) {
                    System.err.println("Cannot write on the specified log file. " +
                                       "Make sure the path exists and you have write permissions.");
                    return;
                } catch (ArrayIndexOutOfBoundsException aioobe) {
                    System.err.println("You must specify a log file when " +
                                       "using the -log argument");
                    return;
                }
            }
            else if (arg.equals("-listener")) {
                try {
                    listeners.add(args[i+1]);
                    i++;
                } catch (ArrayIndexOutOfBoundsException aioobe) {
                    System.err.println("You must specify a classname when " +
                                       "using the -listener argument");
                    return;
                }
            } 
            else if (arg.equals("-logger")) {
                if (loggerClassname != null) {
                    System.err.println("Only one logger class may be specified.");
                    return;
                }
                try {
                    loggerClassname = args[++i];
                } catch (ArrayIndexOutOfBoundsException aioobe) {
                    System.err.println("You must specify a classname when " +
                                       "using the -logger argument");
                    return;
                }
            }
            else if (arg.startsWith("-")) {
                // we don't have any more args to recognize!
                System.out.println("Unknown argument: " + arg);
                return;
            } else {
                // if it's no other arg, it must be a target
                targets.add(arg);
            }
        }
        
        if (buildFileURL == null) {
            File defaultBuildFile = new File(DEFAULT_BUILD_FILENAME);
            try {
                buildFileURL = defaultBuildFile.toURL();
            }
            catch (MalformedURLException e) {
                System.err.println("Buildfile is not valid: " + e.getMessage());
                throw new ConfigException("Build file is not valid", e);
            } 
        }
    }
    
    private Project getProject() throws ConfigException {
        XMLProjectParser parser = new XMLProjectParser();
        Project project = parser.parseBuildFile(buildFileURL); 
        return project;       
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/frontend/DefaultLogger.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/DefaultLogger.java
@@ -1,225 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import org.apache.ant.core.support.*;
 import org.apache.ant.core.model.*;
 import org.apache.ant.core.execution.*;
 import java.io.*;

 /**
 *  Writes build event to a PrintStream. Currently, it
 *  only writes which targets are being executed, and
 *  any messages that get logged.
 */
 public class DefaultLogger implements BuildLogger {
    private static int LEFT_COLUMN_SIZE = 12;

    protected PrintStream out;
    protected PrintStream err;
    protected int msgOutputLevel = BuildEvent.MSG_ERR;
    private long startTime = System.currentTimeMillis();

    protected static String lSep = System.getProperty("line.separator");

    protected boolean emacsMode = false;

    /**
     * Set the msgOutputLevel this logger is to respond to.
     *
     * Only messages with a message level lower than or equal to the given level are 
     * output to the log.
     * <P>
     * Constants for the message levels are in Project.java. The order of
     * the levels, from least to most verbose, is MSG_ERR, MSG_WARN,
     * MSG_INFO, MSG_VERBOSE, MSG_DEBUG.
     *
     * The default message level for DefaultLogger is Project.MSG_ERR.
     *
     * @param level the logging level for the logger.
     */
    public void setMessageOutputLevel(int level) {
        this.msgOutputLevel = level;
    }

    
    /**
     * Set the output stream to which this logger is to send its output.
     *
     * @param output the output stream for the logger.
     */
    public void setOutputPrintStream(PrintStream output) {
        this.out = output;
    }

    /**
     * Set the output stream to which this logger is to send error messages.
     *
     * @param err the error stream for the logger.
     */
    public void setErrorPrintStream(PrintStream err) {
        this.err = err;
    }

    /**
     * Set this logger to produce emacs (and other editor) friendly output.
     *
     * @param emacsMode true if output is to be unadorned so that emacs and other
     * editors can parse files names, etc.
     */
    public void setEmacsMode(boolean emacsMode) {
        this.emacsMode = emacsMode;
    }

    public void reportException(Throwable t) {
        if (t instanceof AntException) {
            AntException e = (AntException)t;
            Location location = e.getLocation();
            Throwable cause = e.getCause();
            if (location != null && location != Location.UNKNOWN_LOCATION) {
                out.print(location);
            }
            out.println(e.getMessage());
            
            if (cause != null) {
                out.println("Root cause: " + cause.toString());
            }
        }
        else {
            t.printStackTrace(err);
        }
    }
    
    public void processBuildEvent(BuildEvent event) {
        switch (event.getEventType()) {
            case BuildEvent.BUILD_STARTED:
                startTime = System.currentTimeMillis();
                break;
            case BuildEvent.BUILD_FINISHED:
                Throwable cause = event.getCause();
        
                if (cause == null) {
                    out.println(lSep + "BUILD SUCCESSFUL");
                }
                else {
                    err.println(lSep + "BUILD FAILED" + lSep);
        
                    reportException(cause);
                }
        
                out.println(lSep + "Total time: " + formatTime(System.currentTimeMillis() - startTime));
                break;
            case BuildEvent.TARGET_STARTED:
                if (BuildEvent.MSG_INFO <= msgOutputLevel) {
                    Target target = (Target)event.getBuildElement();
                    out.println(lSep + target.getName() + ":");
                }
                break;
            case BuildEvent.TARGET_FINISHED:
                break;
            case BuildEvent.TASK_STARTED:
                break;
            case BuildEvent.TASK_FINISHED:
                break;
            case BuildEvent.MESSAGE:
                PrintStream logTo = event.getPriority() == BuildEvent.MSG_ERR ? err : out;
        
                // Filter out messages based on priority
                if (event.getPriority() <= msgOutputLevel) {
        
                    // Print out the name of the task if we're in one
                    Object buildElement = event.getBuildElement();
                    if (buildElement instanceof TaskElement) {
                        TaskElement taskElement = (TaskElement)buildElement;
                        String name = taskElement.getType();
        
                        if (!emacsMode) {
                            String msg = "[" + name + "] ";
                            for (int i = 0; i < (LEFT_COLUMN_SIZE - msg.length()); i++) {
                                logTo.print(" ");
                            }
                            logTo.print(msg);
                        }
                    }
        
                    // Print the message
                    logTo.println(event.getMessage());
                }
                break;
            default:
                err.println("Unrecognized event type = " + event.getEventType());
                break;
        }
    }            

    protected static String formatTime(long millis) {
        long seconds = millis / 1000;
        long minutes = seconds / 60;


        if (minutes > 0) {
            return Long.toString(minutes) + " minute"
                + (minutes == 1 ? " " : "s ")
                + Long.toString(seconds%60) + " second"
                + (seconds%60 == 1 ? "" : "s");
        }
        else {
            return Long.toString(seconds) + " second"
                + (seconds%60 == 1 ? "" : "s");
        }

    }

 }
--- a/proposal/mutant/src/main/org/apache/ant/frontend/EmbedTest.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/EmbedTest.java
@@ -1,77 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import java.io.*;
 import java.net.*;
 import java.util.*;
 import javax.xml.parsers.*;
 import org.xml.sax.SAXParseException;
 import java.lang.reflect.*;

 import org.apache.ant.core.support.*;
 import org.apache.ant.core.xml.*;
 import org.apache.ant.core.config.*;

 /**
 * This class illustrates the use of the ExecutionFrame class
 * standalone to execute tasks
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class EmbedTest {
    
 }

--- a/proposal/mutant/src/main/org/apache/ant/frontend/Launcher.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/Launcher.java
@@ -1,89 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import java.io.*;
 import java.net.*;
 import javax.xml.parsers.*;
 import java.lang.reflect.*;

 import org.apache.ant.core.support.*;

 /**
 * This is the command line front end to end. It drives the core
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class Launcher {
    public static void main(String[] args) throws Exception {
        
        // we need to find the parser jars and makre sure we are going to use
        // those in preference to anything else that may be lying about in the
        // user's classpath
        AntClassLoader coreClassLoader = AntLocator.getCoreClassLoader(System.getProperties());

        URL frontEndURL = AntLocator.getClassLocationURL(Launcher.class);
        coreClassLoader.addURL(frontEndURL);
        
        Class commandLineClass = Class.forName("org.apache.ant.frontend.Commandline", true, coreClassLoader);
        
        final Class[] param = {Class.forName("[Ljava.lang.String;")};
        Class target = null;
        final Method startMethod = commandLineClass.getMethod("start", param);
        final Object[] argument = {args};
        startMethod.invoke(null, argument);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/frontend/RemoteLauncher.java
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/RemoteLauncher.java
@@ -1,97 +0,0 @@
 /*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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 end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

 package org.apache.ant.frontend;

 import java.io.*;
 import java.net.*;
 import javax.xml.parsers.*;
 import java.lang.reflect.*;

 import org.apache.ant.core.support.*;

 /**
 * Command line to run Ant core from a remote server
 *
 * @author <a href="mailto:conor@apache.org">Conor MacNeill</a>
 */ 
 public class RemoteLauncher {
    public static void main(String[] args) throws Exception {

        String antHome = args[0];
        String parserHome = args[1];
        
        URL[] remoteCore = new URL[3];
        remoteCore[0] = new URL(antHome + "/lib/core.jar");
        remoteCore[1] = new URL(antHome + "/lib/frontend.jar");
        remoteCore[2] = new URL(parserHome);
        AntClassLoader coreClassLoader = new AntClassLoader(remoteCore);

        String[] realArgs = new String[args.length - 2];
        System.arraycopy(args, 2, realArgs, 0, realArgs.length);
                

        System.out.print("Loading remote Ant ... ");        
        Class launcher = Class.forName("org.apache.ant.frontend.Commandline", true, coreClassLoader);
        
        final Class[] param = { Class.forName("[Ljava.lang.String;") };
        Class target = null;
        final Method startMethod = launcher.getMethod("start", param);
        final Object[] argument = {realArgs};
        System.out.println("Done");        
        System.out.println("Starting remote Ant");        
        startMethod.invoke(null, argument);
    }
 }

--- a/proposal/mutant/src/main/org/apache/ant/frontend/eggmanifest.mf
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/eggmanifest.mf
@@ -1,5 +0,0 @@
 Manifest-Version: 1.0
 Created-By: Ant 2.0alpha
 Main-Class: org.apache.ant.frontend.RemoteLauncher
 Class-Path: core.jar
 Sealed: true
--- a/proposal/mutant/src/main/org/apache/ant/frontend/manifest.mf
+++ b/proposal/mutant/src/main/org/apache/ant/frontend/manifest.mf
@@ -1,5 +0,0 @@
 Manifest-Version: 1.0
 Created-By: Ant 2.0alpha
 Main-Class: org.apache.ant.frontend.Launcher
 Class-Path: core.jar
 Sealed: true