/*
  Copyright (c) 2001, 2003 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath 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 2, or (at your option)
any later version.
 
GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */

package gnu.classpath.tools.rmi.rmic;

/**
 * A Compiler object can be used to compile a .java file into a
 * .class file.  This is an abstract class; the
 * <code>getInstance()</code> method is used to obtain the actual
 * compiler object.
 */
public abstract class Compiler
{
  // Can't directly instantiate.
  protected Compiler ()
  {
  }

  /** Create a new compiler instance.  */
  public static Compiler getInstance ()
  {
    return getInstance (System.getProperty ("classpath.compiler", "gcj"));
  }

  /** Create a new compiler instance given the name of the compiler.  */
  public static Compiler getInstance (String name)
  {
    try
      {
	Class k = Class.forName (classPrefix + name);
	return (Compiler) k.newInstance ();
      }
    catch (Throwable _)
      {
      }
    return null;
  }

   /** Get the directory where output files will be put.  */
   public String getDestination ()
   {
     return dest;
   }

  /** Set the directory where output files will be put.  */
  public void setDestination (String dest)
  {
    this.dest = dest;
  }

  /** Compile the given file.  Throws exception on error.  */
  public abstract void compile (String name) throws Exception;

  /** The destination directory, or null if none set.  */
  protected String dest;

  /** Class prefix used when trying to find instance.  */
  private static final String classPrefix = "gnu.java.rmi.rmic.Compile_";
}