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1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  *             of Java bytecode.
4  *
5  * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard;
22 
23 
24 /**
25  * This class stores a specification of class members. The specification is
26  * template-based: the class member names and descriptors can contain wildcards.
27  *
28  * @author Eric Lafortune
29  */
30 public class MemberSpecification
31 {
32     public int    requiredSetAccessFlags;
33     public int    requiredUnsetAccessFlags;
34     public final String annotationType;
35     public final String name;
36     public final String descriptor;
37 
38 
39     /**
40      * Creates a new option to keep all possible class members.
41      */
MemberSpecification()42     public MemberSpecification()
43     {
44         this(0,
45              0,
46              null,
47              null,
48              null);
49     }
50 
51 
52     /**
53      * Creates a new option to keep the specified class member(s).
54      *
55      * @param requiredSetAccessFlags   the class access flags that must be set
56      *                                 in order for the class to apply.
57      * @param requiredUnsetAccessFlags the class access flags that must be unset
58      *                                 in order for the class to apply.
59      * @param annotationType           the name of the class that must be an
60      *                                 annotation in order for the class member
61      *                                 to apply. The name may be null to specify
62      *                                 that no annotation is required.
63      * @param name                     the class member name. The name may be
64      *                                 null to specify any class member or it
65      *                                 may contain "*" or "?" wildcards.
66      * @param descriptor               the class member descriptor. The
67      *                                 descriptor may be null to specify any
68      *                                 class member or it may contain
69      *                                 "**", "*", or "?" wildcards.
70      */
MemberSpecification(int requiredSetAccessFlags, int requiredUnsetAccessFlags, String annotationType, String name, String descriptor)71     public MemberSpecification(int    requiredSetAccessFlags,
72                                int    requiredUnsetAccessFlags,
73                                String annotationType,
74                                String name,
75                                String descriptor)
76     {
77         this.requiredSetAccessFlags   = requiredSetAccessFlags;
78         this.requiredUnsetAccessFlags = requiredUnsetAccessFlags;
79         this.annotationType           = annotationType;
80         this.name                     = name;
81         this.descriptor               = descriptor;
82     }
83 
84 
85 
86     // Implementations for Object.
87 
equals(Object object)88     public boolean equals(Object object)
89     {
90         if (object == null ||
91             this.getClass() != object.getClass())
92         {
93             return false;
94         }
95 
96         MemberSpecification other = (MemberSpecification)object;
97         return
98             (this.requiredSetAccessFlags   == other.requiredSetAccessFlags                                                                      ) &&
99             (this.requiredUnsetAccessFlags == other.requiredUnsetAccessFlags                                                                    ) &&
100             (this.annotationType == null ? other.annotationType == null : this.annotationType.equals(other.annotationType)) &&
101             (this.name           == null ? other.name           == null : this.name.equals(other.name)                    ) &&
102             (this.descriptor     == null ? other.descriptor     == null : this.descriptor.equals(other.descriptor)        );
103     }
104 
hashCode()105     public int hashCode()
106     {
107         return
108             (requiredSetAccessFlags                                ) ^
109             (requiredUnsetAccessFlags                              ) ^
110             (annotationType == null ? 0 : annotationType.hashCode()) ^
111             (name           == null ? 0 : name.hashCode()          ) ^
112             (descriptor     == null ? 0 : descriptor.hashCode()    );
113     }
114 }
115