OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [vm/] [reference/] [sun/] [reflect/] [misc/] [ReflectUtil.java] - Blame information for rev 780

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 780 jeremybenn
/* ReflectUtil.java - JSR 166 reflection hooks
2
   Copyright (C) 2006 Free Software Foundation
3
 
4
This file is part of GNU Classpath.
5
 
6
GNU Classpath is free software; you can redistribute it and/or modify
7
it under the terms of the GNU General Public License as published by
8
the Free Software Foundation; either version 2, or (at your option)
9
any later version.
10
 
11
GNU Classpath is distributed in the hope that it will be useful, but
12
WITHOUT ANY WARRANTY; without even the implied warranty of
13
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
General Public License for more details.
15
 
16
You should have received a copy of the GNU General Public License
17
along with GNU Classpath; see the file COPYING.  If not, write to the
18
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19
02110-1301 USA.
20
 
21
Linking this library statically or dynamically with other modules is
22
making a combined work based on this library.  Thus, the terms and
23
conditions of the GNU General Public License cover the whole
24
combination.
25
 
26
As a special exception, the copyright holders of this library give you
27
permission to link this library with independent modules to produce an
28
executable, regardless of the license terms of these independent
29
modules, and to copy and distribute the resulting executable under
30
terms of your choice, provided that you also meet, for each linked
31
independent module, the terms and conditions of the license of that
32
module.  An independent module is a module which is not derived from
33
or based on this library.  If you modify this library, you may extend
34
this exception to your version of the library, but you are not
35
obligated to do so.  If you do not wish to do so, delete this
36
exception statement from your version. */
37
 
38
package sun.reflect.misc;
39
 
40
import java.lang.reflect.Modifier;
41
 
42
public class ReflectUtil
43
{
44
  // We use this inaccessible inner class as an argument type
45
  // in verifyMemberAccess.  All current users of this method
46
  // in the JSR 166 RI pass 'null' for this argument, and
47
  // consequently we don't know what it means.  Using a funny
48
  // type like this for the argument means that if the RI changes,
49
  // we will see a compilation error.
50
  private static class MustBeNull
51
  {
52
  }
53
 
54
  /**
55
   * Check if the current thread is allowed to access the package of
56
   * the declaringClass.
57
   *
58
   * @param declaringClass class name to check access to
59
   * @throws SecurityException if permission is denied
60
   * @throws NullPointerException if declaringClass is null
61
   */
62
  public static void checkPackageAccess(Class declaringClass)
63
  {
64
    SecurityManager sm;
65
    if ((sm = System.getSecurityManager()) != null)
66
      {
67
        while (declaringClass.isArray())
68
          declaringClass = declaringClass.getComponentType();
69
        String name = declaringClass.getName();
70
        int i = name.lastIndexOf('.');
71
        if (i != -1) // if declaringClass is a member of a package
72
          {
73
            name = name.substring(0, i);
74
            sm.checkPackageAccess(name);
75
          }
76
      }
77
  }
78
 
79
  /**
80
   * Perform access checks on a member of a class.  This API is
81
   * derived from the public domain code in the JSR 166 reference
82
   * implementation.
83
   * @param caller the class requesting access to the member
84
   * @param declarer the declaring class of the member
85
   * @param ignored unknown parameter; always null
86
   * @param modifiers the modifiers on the member
87
   * @return true if access is granted, false otherwise
88
   */
89
  public static void ensureMemberAccess(Class caller,
90
                                        Class declarer,
91
                                        MustBeNull ignored,
92
                                        int modifiers)
93
  {
94
    // Same class, always ok.
95
    if (caller == declarer)
96
      return;
97
    // Public access is ok.
98
    if ((modifiers & Modifier.PUBLIC) != 0)
99
      return;
100
    // Protected access and request comes from
101
    // a subclass of the declarer -- ok.
102
    if ((modifiers & Modifier.PROTECTED) != 0
103
        && declarer.isAssignableFrom(caller))
104
      return;
105
    // Package-private access, or protected access,
106
    // and the packages are the same --ok.
107
    if ((modifiers & Modifier.PRIVATE) == 0
108
        && caller.getPackage() == declarer.getPackage())
109
      return;
110
    // Otherwise, no.
111
    throw new IllegalAccessError();
112
  }
113
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.