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Java > Open Source Codes > com > caucho > quercus > expr > VarNewExpr


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.quercus.expr;
31
32 import com.caucho.quercus.Location;
33 import com.caucho.quercus.QuercusException;
34 import com.caucho.quercus.env.Env;
35 import com.caucho.quercus.env.QuercusClass;
36 import com.caucho.quercus.env.Value;
37 import com.caucho.util.L10N;
38
39 import java.util.ArrayList JavaDoc;
40
41 /**
42  * Represents a PHP function expression.
43  */
44 public class VarNewExpr extends Expr {
45   private static final L10N L = new L10N(NewExpr.class);
46   
47   protected final Expr _name;
48   protected final Expr []_args;
49
50   protected Expr []_fullArgs;
51
52   public VarNewExpr(Location location, Expr name, ArrayList JavaDoc<Expr> args)
53   {
54     super(location);
55     _name = name;
56
57     _args = new Expr[args.size()];
58     args.toArray(_args);
59   }
60
61   public VarNewExpr(Location location, Expr name, Expr []args)
62   {
63     super(location);
64     _name = name;
65     _args = args;
66   }
67
68   public VarNewExpr(Expr name, ArrayList JavaDoc<Expr> args)
69   {
70     this(Location.UNKNOWN, name, args);
71   }
72
73   public VarNewExpr(Expr name, Expr []args)
74   {
75     this(Location.UNKNOWN, name, args);
76   }
77   
78   /**
79    * Evaluates the expression.
80    *
81    * @param env the calling environment.
82    *
83    * @return the expression value.
84    */
85   public Value eval(Env env)
86   {
87     String JavaDoc name = _name.evalString(env).intern();
88     
89     QuercusClass cl = env.findClass(name);
90
91     if (cl == null) {
92       throw new QuercusException(L.l("no matching class {0}", name));
93     }
94
95     _fullArgs = _args;
96
97     return cl.callNew(env, _args);
98   }
99   
100   public String JavaDoc toString()
101   {
102     return _name + "()";
103   }
104 }
105
106
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