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


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.env.Env;
34 import com.caucho.quercus.env.NullValue;
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 NewExpr extends Expr {
45   private static final L10N L = new L10N(NewExpr.class);
46   protected final String JavaDoc _name;
47   protected final Expr []_args;
48
49   public NewExpr(Location location, String JavaDoc name, ArrayList JavaDoc<Expr> args)
50   {
51     super(location);
52     _name = name.intern();
53
54     _args = new Expr[args.size()];
55     args.toArray(_args);
56   }
57
58   public NewExpr(Location location, String JavaDoc name, Expr []args)
59   {
60     super(location);
61     _name = name.intern();
62     _args = args;
63   }
64
65   public NewExpr(String JavaDoc name, ArrayList JavaDoc<Expr> args)
66   {
67     this(Location.UNKNOWN, name, args);
68   }
69
70   public NewExpr(String JavaDoc name, Expr []args)
71   {
72     this(Location.UNKNOWN, name, args);
73   }
74   
75   /**
76    * Evaluates the expression.
77    *
78    * @param env the calling environment.
79    *
80    * @return the expression value.
81    */
82   public Value eval(Env env)
83   {
84     QuercusClass cl = env.findAbstractClass(_name);
85
86     if (cl == null) {
87       throw env.errorException(L.l("no matching class {0}", _name));
88     }
89
90       
91     Value []args = new Value[_args.length];
92
93     for (int i = 0; i < args.length; i++)
94       args[i] = _args[i].eval(env);
95
96     env.pushCall(this, NullValue.NULL);
97     try {
98       env.checkTimeout();
99     
100       return cl.callNew(env, args);
101     } finally {
102       env.popCall();
103     }
104   }
105   
106   public String JavaDoc toString()
107   {
108     return _name + "()";
109   }
110 }
111
112
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