Package com.caucho.quercus.expr

Source Code of com.caucho.quercus.expr.NewExpr

/*
* 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.expr;

import com.caucho.quercus.Location;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.NullValue;
import com.caucho.quercus.env.QuercusClass;
import com.caucho.quercus.env.Value;
import java.util.ArrayList;

/**
* Represents a PHP function expression of the form "new ClassName()".
*/
public class NewExpr extends Expr {
  protected final String _name;
  protected final Expr []_args;

  public NewExpr(Location location, String name, ArrayList<Expr> args)
  {
    super(location);
    _name = name.intern();

    _args = new Expr[args.size()];
    args.toArray(_args);
  }

  public NewExpr(Location location, String name, Expr []args)
  {
    super(location);
    _name = name.intern();
    _args = args;
  }

  public NewExpr(String name, ArrayList<Expr> args)
  {
    this(Location.UNKNOWN, name, args);
  }

  public NewExpr(String name, Expr []args)
  {
    this(Location.UNKNOWN, name, args);
  }
 
  /**
   * Evaluates the expression.
   *
   * @param env the calling environment.
   *
   * @return the expression value.
   */
  public Value eval(Env env)
  {
    Value []args = new Value[_args.length];

    for (int i = 0; i < args.length; i++) {
      args[i] = _args[i].evalArg(env, true);
    }
   
    env.pushCall(this, NullValue.NULL, args);
   
    try {
      QuercusClass cl = env.findAbstractClass(_name);

      env.checkTimeout();

      return cl.callNew(env, args);
    } finally {
      env.popCall();
    }
  }
 
  public String toString()
  {
    return _name + "()";
  }
}
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