1 package org.apache.bcel.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 org.apache.bcel.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 1.3 2002/07/11 19:39:04 mdahm Exp $
64 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
65 */
66 public abstract class AccessFlags implements java.io.Serializable {
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 aka. "modifiers".
80 */
81 public final int getAccessFlags() { return access_flags; }
82
83 /***
84 * @return Access flags of the object aka. "modifiers".
85 */
86 public final int getModifiers() { return access_flags; }
87
88 /*** Set access flags aka "modifiers".
89 * @param access_flags Access flags of the object.
90 */
91 public final void setAccessFlags(int access_flags) {
92 this.access_flags = access_flags;
93 }
94
95 /*** Set access flags aka "modifiers".
96 * @param access_flags Access flags of the object.
97 */
98 public final void setModifiers(int access_flags) {
99 setAccessFlags(access_flags);
100 }
101
102 private final void setFlag(int flag, boolean set) {
103 if((access_flags & flag) != 0) { // Flag is set already
104 if(!set) // Delete flag ?
105 access_flags ^= flag;
106 } else { // Flag not set
107 if(set) // Set flag ?
108 access_flags |= flag;
109 }
110 }
111
112 public final void isPublic(boolean flag) { setFlag(Constants.ACC_PUBLIC, flag); }
113 public final boolean isPublic() {
114 return (access_flags & Constants.ACC_PUBLIC) != 0;
115 }
116
117 public final void isPrivate(boolean flag) { setFlag(Constants.ACC_PRIVATE, flag); }
118 public final boolean isPrivate() {
119 return (access_flags & Constants.ACC_PRIVATE) != 0;
120 }
121
122 public final void isProtected(boolean flag) { setFlag(Constants.ACC_PROTECTED, flag); }
123 public final boolean isProtected() {
124 return (access_flags & Constants.ACC_PROTECTED) != 0;
125 }
126
127 public final void isStatic(boolean flag) { setFlag(Constants.ACC_STATIC, flag); }
128 public final boolean isStatic() {
129 return (access_flags & Constants.ACC_STATIC) != 0;
130 }
131
132 public final void isFinal(boolean flag) { setFlag(Constants.ACC_FINAL, flag); }
133 public final boolean isFinal() {
134 return (access_flags & Constants.ACC_FINAL) != 0;
135 }
136
137 public final void isSynchronized(boolean flag) { setFlag(Constants.ACC_SYNCHRONIZED, flag); }
138 public final boolean isSynchronized() {
139 return (access_flags & Constants.ACC_SYNCHRONIZED) != 0;
140 }
141
142 public final void isVolatile(boolean flag) { setFlag(Constants.ACC_VOLATILE, flag); }
143 public final boolean isVolatile() {
144 return (access_flags & Constants.ACC_VOLATILE) != 0;
145 }
146
147 public final void isTransient(boolean flag) { setFlag(Constants.ACC_TRANSIENT, flag); }
148 public final boolean isTransient() {
149 return (access_flags & Constants.ACC_TRANSIENT) != 0;
150 }
151
152 public final void isNative(boolean flag) { setFlag(Constants.ACC_NATIVE, flag); }
153 public final boolean isNative() {
154 return (access_flags & Constants.ACC_NATIVE) != 0;
155 }
156
157 public final void isInterface(boolean flag) { setFlag(Constants.ACC_INTERFACE, flag); }
158 public final boolean isInterface() {
159 return (access_flags & Constants.ACC_INTERFACE) != 0;
160 }
161
162 public final void isAbstract(boolean flag) { setFlag(Constants.ACC_ABSTRACT, flag); }
163 public final boolean isAbstract() {
164 return (access_flags & Constants.ACC_ABSTRACT) != 0;
165 }
166
167 public final void isStrictfp(boolean flag) { setFlag(Constants.ACC_STRICT, flag); }
168 public final boolean isStrictfp() {
169 return (access_flags & Constants.ACC_STRICT) != 0;
170 }
171 }
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