content: /*******************************************************************************
  * Copyright (c) 2011 Luaj.org. All rights reserved.
  *
  * 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.luaj.vm2.lib.jse;
  
  import java.lang.reflect.Field;
  
  import org.luaj.vm2.LuaError;
  import org.luaj.vm2.LuaUserdata;
  import org.luaj.vm2.LuaValue;
  
  /**
   * LuaValue that represents a Java instance.
   * <p>
   * Will respond to get() and set() by returning field values or methods. 
   * <p>
   * This class is not used directly.  
   * It is returned by calls to {@link CoerceJavaToLua#coerce(Object)} 
   * when a subclass of Object is supplied.
   * @see CoerceJavaToLua
   * @see CoerceLuaToJava
   */
  class JavaInstance extends LuaUserdata {
  
  	JavaClass jclass;
  	
  	JavaInstance(Object instance) {
  		super(instance);
  	}
  
  	public LuaValue get(LuaValue key) {
  		if ( jclass == null )
  			jclass = JavaClass.forClass(m_instance.getClass());
  		Field f = jclass.getField(key);
  		if ( f != null )
  			try {
  				return CoerceJavaToLua.coerce(f.get(m_instance));
  			} catch (Exception e) {
  				throw new LuaError(e);
  			}
  		LuaValue m = jclass.getMethod(key);
  		if ( m != null )
  			return m;
  		return super.get(key);
  	}
  
  	public void set(LuaValue key, LuaValue value) {
  		if ( jclass == null )
  			jclass = JavaClass.forClass(m_instance.getClass());
  		Field f = jclass.getField(key);
  		if ( f != null )
  			try {
  				f.set(m_instance, CoerceLuaToJava.coerce(value, f.getType()));
  				return;
  			} catch (Exception e) {
  				throw new LuaError(e);
  			}
  		super.set(key, value);
  	} 	
  	
  }
  