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Java > Open Source Codes > com > caucho > es > parser > JavaClassExpr


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  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.es.parser;
30
31 import com.caucho.es.ESException;
32
33 import java.io.IOException JavaDoc;
34 import java.lang.reflect.Modifier JavaDoc;
35
36 /**
37  * Expression representing a java class object.
38  */
39 class JavaClassExpr extends Expr {
40   private String JavaDoc name;
41   private Class JavaDoc javaClass;
42   private TypeExpr javaType;
43
44   JavaClassExpr(Block block, Class JavaDoc javaClass)
45   {
46     super(block);
47
48     this.javaClass = javaClass;
49
50     if (javaClass.getName().indexOf('.') < 0)
51       block.function.cl.addJavaImport(javaClass.getName());
52   }
53
54   void setType(int type)
55   {
56   }
57
58   int getType()
59   {
60     return TYPE_ES;
61   }
62
63   Expr getTypeExpr()
64   {
65     return null;
66   }
67
68   /**
69    * The java type of a java class is java.lang.Class
70    */
71   Class JavaDoc getJavaType()
72   {
73     return Class JavaDoc.class;
74   }
75
76   /**
77    * Returns the java class.
78    */
79   Class JavaDoc getJavaClass()
80   {
81     return javaClass;
82   }
83
84   CallExpr startNew()
85     throws ESException
86   {
87     return new JavaNewExpr(block, javaClass);
88   }
89
90   CallExpr startCall()
91     throws ESException
92   {
93     return new JavaNewExpr(block, javaClass);
94   }
95
96   void printImpl() throws IOException JavaDoc
97   {
98     if (! Modifier.isPublic(javaClass.getModifiers()))
99       throw new IOException JavaDoc("can't create `" + javaClass.getName() + "'");
100     
101     cl.print("_env.wrapClass(" + javaClass.getName() + ".class)");
102   }
103 }
104
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