Package com.caucho.quercus.marshal

Source Code of com.caucho.quercus.marshal.FloatObjectMarshal

/*
* 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.DoubleValue;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.expr.Expr;

public class FloatObjectMarshal extends Marshal
{
  public static final Marshal MARSHAL = new FloatObjectMarshal();

  public boolean isReadOnly()
  {
    return true;
  }

  public Object marshal(Env env, Expr expr, Class expectedClass)
  {
    return new Float((float) expr.evalDouble(env));
  }

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

  public Value unmarshal(Env env, Object value)
  {
    if (value == null)
      return DoubleValue.ZERO;
    else
      return new DoubleValue(((Number) value).doubleValue());
  }

  @Override
  protected int getMarshalingCostImpl(Value argValue)
  {
    return argValue.toFloatMarshalCost() + 3;

    /*
    if (argValue instanceof DoubleValue)
      return Marshal.ONE;
    else if (argValue.isLongConvertible())
      return LONG_CONVERTIBLE_FLOAT_COST;
    else if (argValue.isDoubleConvertible())
      return DOUBLE_CONVERTIBLE_FLOAT_COST;
    else
      return Marshal.FOUR;
    */
  }

  @Override
  public Class getExpectedClass()
  {
    return Float.class;
  }
}
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