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Java > Open Source Codes > com > caucho > quercus > env > ArgGetFieldValue


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.env;
31
32 /**
33  * Represents an field-get argument which might be a call to a reference.
34  */
35 public class ArgGetFieldValue extends Value {
36   private final Env _env;
37   private final Value _obj;
38   private final String JavaDoc _index;
39
40   public ArgGetFieldValue(Env env, Value obj, String JavaDoc index)
41   {
42     _env = env;
43     _obj = obj;
44     _index = index;
45   }
46
47   /**
48    * Creates an argument which may create the given field.
49    */
50   public Value getArg(Value index)
51   {
52     // php/3d1q
53 return new ArgGetValue(this, index);
54   }
55
56   /**
57    * Creates an argument which may create the given field.
58    */
59   @Override JavaDoc
60   public Value getFieldArg(Env env, String JavaDoc index)
61   {
62     // php/3d2q
63 return new ArgGetFieldValue(env, this, index);
64   }
65
66   /**
67    * Converts to a reference variable.
68    */
69   @Override JavaDoc
70   public Var toRefVar()
71   {
72     // php/3d2t
73 return _obj.getFieldRef(_env, _index).toRefVar();
74   }
75
76   /**
77    * Converts to a value.
78    */
79   @Override JavaDoc
80   public Value toValue()
81   {
82     return _obj.getField(_env, _index);
83   }
84
85   /**
86    * Converts to a read-only function argument.
87    */
88   @Override JavaDoc
89   public Value toArgValueReadOnly()
90   {
91     return toValue();
92   }
93
94   /**
95    * Converts to a function argument.
96    */
97   @Override JavaDoc
98   public Value toArgValue()
99   {
100     return toValue();
101   }
102
103   /**
104    * Converts to a reference variable.
105    */
106   @Override JavaDoc
107   public Value toRefValue()
108   {
109     return _obj.getFieldRef(_env, _index);
110   }
111
112   /**
113    * Converts to a variable.
114    */
115   public Var toVar()
116   {
117     return new Var();
118   }
119
120   /**
121    * Converts to a reference variable.
122    */
123   public Value getArgRef(Value index)
124   {
125     // php/3d1q
126 return _obj.getFieldArray(_env, _index).getArgRef(index);
127   }
128
129   /**
130    * Converts to a reference variable.
131    */
132   public Value getFieldRef(Env env, String JavaDoc index)
133   {
134     // php/3d2q
135 return _obj.getFieldObject(_env, _index).getFieldRef(_env, index);
136   }
137
138   public String JavaDoc toString()
139   {
140     return "Arg[" + _obj + "->" + _index + "]";
141   }
142 }
143
144
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