/*
* Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.marshal;
import com.caucho.quercus.env.Callback;
import com.caucho.quercus.env.CallbackFunction;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.expr.Expr;
public class CallbackMarshal extends Marshal
{
public static final Marshal MARSHAL = new CallbackMarshal();
public boolean isReadOnly()
{
return true;
}
public <T> T marshal(Env env, Expr expr, Class<T> expectedClass)
{
return marshal(env, expr.eval(env), expectedClass);
}
@SuppressWarnings("unchecked")
public <T> T marshal(Env env, Value value, Class<T> expectedClass)
{
Callback cb = env.createCallback(value);
return (T)cb;
/*
if (cb != null)
return cb;
else if (value.isDefault())
return null;
else
return new CallbackFunction(env, value.toString()); //null;
*/
}
public Value unmarshal(Env env, Object value)
{
throw new UnsupportedOperationException();
}
@Override
protected int getMarshalingCostImpl(Value argValue)
{
if (argValue instanceof CallbackFunction)
return Marshal.ZERO;
else if (argValue.isString())
return Marshal.THREE;
else
return Marshal.FOUR;
}
@Override
public Class getExpectedClass()
{
return Callback.class;
}
}