GeneratorUtil.java

/*
 * MicroJIAC - A Lightweight Agent Framework
 * This file is part of MicroJIAC MIDlet-Maven-Plugin.
 *
 * Copyright (c) 2007-2012 DAI-Labor, Technische Universität Berlin
 *
 * This library includes software developed at DAI-Labor, Technische
 * Universität Berlin (http://www.dai-labor.de)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
/*
 * $Id$
 */
package de.jiac.micro.reflect;

import java.io.IOException;
import java.io.PrintStream;
import java.text.DateFormat;
import java.util.Date;

/**
 * @author Marcel Patzlaff
 * @version $Revision:$
 */
abstract class GeneratorUtil {
    private final static DateFormat DATE_FORMAT= DateFormat.getDateTimeInstance();
    
    protected static String getJavaSourceClassName(Class clazz) {
        return clazz.getName().replace('$', '.');
    }
    
    protected static void insertFromObjectConversion(Appendable out, Class<?> argType, CharSequence variable) {
        try {
            if(argType == boolean.class) {
                out.append("((Boolean)").append(variable).append(").booleanValue()");
            } else if(argType == byte.class) {
                out.append("((Byte)").append(variable).append(").byteValue()");
            } else if(argType == char.class) {
                out.append("((Character)").append(variable).append(").charValue()");
            } else if(argType == double.class) {
                out.append("((Double)").append(variable).append(").doubleValue()");
            } else if(argType == float.class) {
                out.append("((Float)").append(variable).append(").floatValue()");
            } else if(argType == int.class) {
                out.append("((Integer)").append(variable).append(").intValue()");
            } else if(argType == long.class) {
                out.append("((Long)").append(variable).append(").longValue()");
            } else if(argType == short.class) {
                out.append("((Short)").append(variable).append(").shortValue()");
            } else {
                out.append('(').append(getJavaSourceClassName(argType)).append(')').append(variable);
            }
        } catch (IOException ioe) {
            // should never happen
            throw new AssertionError(ioe);
        }
    }
    
    protected static void insertToObjectConversion(Appendable out, Class<?> type, CharSequence variable) {
        try {
            if(type == boolean.class) {
                out.append("new Boolean(").append(variable).append(')');
            } else if(type == byte.class) {
                out.append("new Byte(").append(variable).append(')');
            } else if(type == char.class) {
                out.append("new Character(").append(variable).append(')');
            } else if(type == double.class) {
                out.append("new Double(").append(variable).append(')');
            } else if(type == float.class) {
                out.append("new Float(").append(variable).append(')');
            } else if(type == int.class) {
                out.append("new Integer(").append(variable).append(')');
            } else if(type == long.class) {
                out.append("new Long(").append(variable).append(')');
            } else if(type == short.class) {
                out.append("new Short(").append(variable).append(')');
            } else {
                out.append(variable);
            }
        } catch (IOException ioe) {
            // should never happen
            throw new AssertionError(ioe);
        }
    }
    
    protected static void printHeader(PrintStream out) {
        out.println("//");
        out.println("// This file was generated by the Maven-MIDlet-Plugin for MicroJIAC.");
        out.println("// Any modifications to this file will be lost upon re-running the plugin!");
        out.append("// Generated on: ").println(DATE_FORMAT.format(new Date(System.currentTimeMillis())));
        out.println("//");
        out.println();
        out.println();
    }
}