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Java > Open Source Codes > com > sun > org > apache > bcel > internal > classfile > AccessFlags


1 package com.sun.org.apache.bcel.internal.classfile;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache BCEL" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache BCEL", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56
57 import com.sun.org.apache.bcel.internal.Constants;
58
59 /**
60  * Super class for all objects that have modifiers like private, final, ...
61  * I.e. classes, fields, and methods.
62  *
63  * @version $Id: AccessFlags.java,v 1.1.1.1 2001/10/29 19:59:57 jvanzyl Exp $
64  * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
65  */
66 public abstract class AccessFlags {
67   protected int access_flags;
68   
69   public AccessFlags() {}
70
71   /**
72    * @param a inital access flags
73    */
74   public AccessFlags(int a) {
75     access_flags = a;
76   }
77
78   /**
79    * @return Access flags of the object.
80    */
81   public final int getAccessFlags() { return access_flags; }
82
83   /**
84    * @param access_flags Access flags of the object.
85    */
86   public final void setAccessFlags(int access_flags) {
87     this.access_flags = access_flags;
88   }
89
90   private final void setFlag(int flag, boolean set) {
91     if((access_flags & flag) != 0) { // Flag is set already
92 if(!set) // Delete flag ?
93 access_flags ^= flag;
94     } else { // Flag not set
95 if(set) // Set flag ?
96 access_flags |= flag;
97     }
98   }
99
100   public final void isPublic(boolean flag) { setFlag(Constants.ACC_PUBLIC, flag); }
101   public final boolean isPublic() {
102     return (access_flags & Constants.ACC_PUBLIC) != 0;
103   }
104
105   public final void isPrivate(boolean flag) { setFlag(Constants.ACC_PRIVATE, flag); }
106   public final boolean isPrivate() {
107     return (access_flags & Constants.ACC_PRIVATE) != 0;
108   }
109
110   public final void isProtected(boolean flag) { setFlag(Constants.ACC_PROTECTED, flag); }
111   public final boolean isProtected() {
112     return (access_flags & Constants.ACC_PROTECTED) != 0;
113   }
114
115   public final void isStatic(boolean flag) { setFlag(Constants.ACC_STATIC, flag); }
116   public final boolean isStatic() {
117     return (access_flags & Constants.ACC_STATIC) != 0;
118   }
119
120   public final void isFinal(boolean flag) { setFlag(Constants.ACC_FINAL, flag); }
121   public final boolean isFinal() {
122     return (access_flags & Constants.ACC_FINAL) != 0;
123   }
124
125   public final void isSynchronized(boolean flag) { setFlag(Constants.ACC_SYNCHRONIZED, flag); }
126   public final boolean isSynchronized() {
127     return (access_flags & Constants.ACC_SYNCHRONIZED) != 0;
128   }
129
130   public final void isVolatile(boolean flag) { setFlag(Constants.ACC_VOLATILE, flag); }
131   public final boolean isVolatile() {
132     return (access_flags & Constants.ACC_VOLATILE) != 0;
133   }
134
135   public final void isTransient(boolean flag) { setFlag(Constants.ACC_TRANSIENT, flag); }
136   public final boolean isTransient() {
137     return (access_flags & Constants.ACC_TRANSIENT) != 0;
138   }
139
140   public final void isNative(boolean flag) { setFlag(Constants.ACC_NATIVE, flag); }
141   public final boolean isNative() {
142     return (access_flags & Constants.ACC_NATIVE) != 0;
143   }
144
145   public final void isInterface(boolean flag) { setFlag(Constants.ACC_INTERFACE, flag); }
146   public final boolean isInterface() {
147     return (access_flags & Constants.ACC_INTERFACE) != 0;
148   }
149
150   public final void isAbstract(boolean flag) { setFlag(Constants.ACC_ABSTRACT, flag); }
151   public final boolean isAbstract() {
152     return (access_flags & Constants.ACC_ABSTRACT) != 0;
153   }
154
155   public final void isStrictfp(boolean flag) { setFlag(Constants.ACC_STRICT, flag); }
156   public final boolean isStrictfp() {
157     return (access_flags & Constants.ACC_STRICT) != 0;
158   }
159 }
160
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