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Java > Open Source Codes > com > caucho > quercus > function > Marshal


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.function;
31
32 import com.caucho.quercus.env.Env;
33 import com.caucho.quercus.env.Value;
34 import com.caucho.quercus.expr.Expr;
35 import com.caucho.util.L10N;
36
37 /**
38  * Code for marshaling (PHP to Java) and unmarshaling (Java to PHP) arguments.
39  */
40 abstract public class Marshal {
41   protected static final L10N L = new L10N(Marshal.class);
42
43   /**
44    * Returns true if the result is a primitive boolean.
45    */
46   public boolean isBoolean()
47   {
48     return false;
49   }
50
51   /**
52    * Returns true if the result is a string.
53    */
54   public boolean isString()
55   {
56     return false;
57   }
58
59   /**
60    * Returns true if the result is a long.
61    */
62   public boolean isLong()
63   {
64     return false;
65   }
66
67   /**
68    * Returns true if the result is a double.
69    */
70   public boolean isDouble()
71   {
72     return false;
73   }
74
75   /**
76    * Return true for read-only.
77    */
78   public boolean isReadOnly()
79   {
80     return true;
81   }
82
83   /**
84    * Return true for a reference
85    */
86   public boolean isReference()
87   {
88     return false;
89   }
90
91   abstract public Object JavaDoc marshal(Env env, Expr expr, Class JavaDoc argClass);
92
93   public Object JavaDoc marshal(Env env, Value value, Class JavaDoc argClass)
94   {
95     return value;
96   }
97
98   public Value unmarshal(Env env, Object JavaDoc value)
99   {
100     throw new UnsupportedOperationException JavaDoc(getClass().getName());
101   }
102 }
103
104
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