/*
 * Copyright (c) 1998-2010 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.Env;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.lib.regexp.RegexpModule;
import com.caucho.quercus.lib.regexp.Regexp;
import com.caucho.quercus.expr.Expr;

/**
 * Code for marshaling (PHP to Java) and unmarshaling (Java to PHP) arguments.
 */
public class RegexpArrayMarshal extends StringMarshal {

   public static final RegexpMarshal MARSHAL = new RegexpMarshal();

   @Override
   public Object marshal(Env env, Expr expr, Class expectedClass) {
      return RegexpModule.createRegexpArray(env, expr.eval(env));
   }

   @Override
   public Object marshal(Env env, Value value, Class expectedClass) {
      return RegexpModule.createRegexpArray(env, value);
   }

   @Override
   public Value unmarshal(Env env, Object value) {
      throw new UnsupportedOperationException(getClass().getName());
   }

   @Override
   protected int getMarshalingCostImpl(Value argValue) {
      if (argValue.isArray()) {
         return Marshal.ZERO;
      } else if (argValue.isString()) {
         return Marshal.ONE;
      } else {
         return Marshal.MAX;
      }
   }

   @Override
   public int getMarshalingCost(Expr expr) {
      if (expr.isArray()) {
         return Marshal.ZERO;
      } else {
         return Marshal.ONE;
      }
   }

   @Override
   public Class getExpectedClass() {
      return Regexp[].class;
   }
}
