Ant example source code file (Kjc.java)

This example Ant source code file (Kjc.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

buildexception, buildexception, commandline, commandline, defaultcompileradapter, executejava, executejava, kjc, o2, path, path, using

The Kjc.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package org.apache.tools.ant.taskdefs.compilers;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.ExecuteJava;
import org.apache.tools.ant.types.Commandline;
import org.apache.tools.ant.types.Path;

/**
 * The implementation of the Java compiler for KJC.
 * This is primarily a cut-and-paste from Jikes.java and
 * DefaultCompilerAdapter.
 *
 * @since Ant 1.4
 */
public class Kjc extends DefaultCompilerAdapter {

    /**
     * Run the compilation.
     * @return true if the compilation succeeded
     * @exception BuildException if the compilation has problems.
     */
    public boolean execute() throws BuildException {
        attributes.log("Using kjc compiler", Project.MSG_VERBOSE);
        Commandline cmd = setupKjcCommand();
        cmd.setExecutable("at.dms.kjc.Main");
        ExecuteJava ej = new ExecuteJava();
        ej.setJavaCommand(cmd);
        return ej.fork(getJavac()) == 0;
    }

    /**
     * setup kjc command arguments.
     * @return the command line
     */
    protected Commandline setupKjcCommand() {
        Commandline cmd = new Commandline();

        // generate classpath, because kjc doesn't support sourcepath.
        Path classpath = getCompileClasspath();

        if (deprecation) {
            cmd.createArgument().setValue("-deprecation");
        }

        if (destDir != null) {
            cmd.createArgument().setValue("-d");
            cmd.createArgument().setFile(destDir);
        }

        // generate the clsspath
        cmd.createArgument().setValue("-classpath");

        Path cp = new Path(project);

        // kjc don't have bootclasspath option.
        Path p = getBootClassPath();
        if (p.size() > 0) {
            cp.append(p);
        }

        if (extdirs != null) {
            cp.addExtdirs(extdirs);
        }

        cp.append(classpath);
        if (compileSourcepath != null) {
            cp.append(compileSourcepath);
        } else {
            cp.append(src);
        }

        cmd.createArgument().setPath(cp);

        // kjc-1.5A doesn't support -encoding option now.
        // but it will be supported near the feature.
        if (encoding != null) {
            cmd.createArgument().setValue("-encoding");
            cmd.createArgument().setValue(encoding);
        }

        if (debug) {
            cmd.createArgument().setValue("-g");
        }

        if (optimize) {
            cmd.createArgument().setValue("-O2");
        }

        if (verbose) {
            cmd.createArgument().setValue("-verbose");
        }

        addCurrentCompilerArgs(cmd);

        logAndAddFilesToCompile(cmd);
        return cmd;
    }
}