/* 
 * Copyright (c) 2007 Christian Plesner Hansen (plesner@quenta.org)
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.quenta.clafig.test;

import org.quenta.clafig.ClassFile;
import org.quenta.clafig.ClassFileLoader;
import org.quenta.clafig.Code;
import org.quenta.clafig.Label;
public class Main {
  
  public static int twice(int x) {
    return 2 * x;
  }
  
  public interface ICallable {
    public int call(int value);
  }
  
  public static void main(String[] args) throws Exception {
    // class foo.bar.TestClass implements ICallable
    ClassFile file = new ClassFile("foo.bar.TestClass");    
    file.addImplements(ICallable.class);
    
    // TestClass() { super(); }
    file.addConstructor(new Code(file) {{
      aload(0);
      invokesuper(Object.class.getConstructor());
      rethurn();
    }});
    
    // public int call(int x) {
    //   while (x < 10)
    //     x = Main.twice(x);
    //   return x;
    // }
    Code callMe = file.addMethod("call", new Code(file) {{
      // --- Labels ---
      Label loopStart = new Label();
      Label loopEnd = new Label();
      // --- Code ---
      bind(loopStart);
      push(15);
      iload(1);
      isub();
      iflt(loopEnd);
      iload(1);
      invokestatic(Main.class.getDeclaredMethod("twice", Integer.TYPE));
      istore(1);
      ghoto(loopStart);
      bind(loopEnd);
      iload(1);
      ireturn();
    }});
    callMe.returnType(Integer.TYPE);
    callMe.argumentTypes(Integer.TYPE);
    
    Class<?> chlass = new ClassFileLoader().createClass(file);
    ICallable obj = (ICallable) chlass.newInstance();
    int value = obj.call(7);
    System.out.println(value);
  }

}