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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/tools/util/ModifierFilter.java (1 of 18352 files). Show all

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java/pkg/sun/tools/util/ModifierFilter.java+156−0
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1+/*
2+ * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package sun.tools.util;
27+
28+import sun.tools.java.*;
29+
30+
31+/**
32+ * A class whose instances are filters over Modifier bits.
33+ * Filtering is done by returning boolean values.
34+ * Classes, methods and fields can be filtered, or filtering
35+ * can be done directly on modifier bits.
36+ *
37+ * WARNING: The contents of this source file are not part of any
38+ * supported API. Code that depends on them does so at its own risk:
39+ * they are subject to change or removal without notice.
40+ *
41+ * @see java.lang.reflect.Modifier
42+ * @author Robert Field
43+ */
44+
45+public
46+class ModifierFilter extends java.lang.reflect.Modifier {
47+
48+ /**
49+ * Package private access.
50+ * A "pseudo-" modifier bit that can be used in the
51+ * constructors of this class to specify package private
52+ * access. This is needed since there is no Modifier.PACKAGE.
53+ */
54+ public static final long PACKAGE = 0x8000000000000000L;
55+
56+ /**
57+ * All access modifiers.
58+ * A short-hand set of modifier bits that can be used in the
59+ * constructors of this class to specify all access modifiers,
60+ * Same as PRIVATE | PROTECTED | PUBLIC | PACKAGE.
61+ */
62+ public static final long ALL_ACCESS =
63+ PRIVATE | PROTECTED | PUBLIC | PACKAGE;
64+
65+ private long oneOf;
66+ private long must;
67+ private long cannot;
68+
69+ private static final int ACCESS_BITS = PRIVATE | PROTECTED | PUBLIC;
70+
71+ /**
72+ * Constructor - Specify a filter.
73+ *
74+ * @param oneOf If zero, everything passes the filter.
75+ * If non-zero, at least one of the specified
76+ * bits must be on in the modifier bits to
77+ * pass the filter.
78+ */
79+ public
80+ ModifierFilter(long oneOf) {
81+ this(oneOf, 0, 0);
82+ }
83+
84+ /**
85+ * Constructor - Specify a filter.
86+ * For example, the filter below will only pass synchronized
87+ * methods that are private or package private access and are
88+ * not native or static.
89+ * <pre>
90+ * ModifierFilter( Modifier.PRIVATE | ModifierFilter.PACKAGE,
91+ * Modifier.SYNCHRONIZED,
92+ * Modifier.NATIVE | Modifier.STATIC)
93+ * </pre><p>
94+ * Each of the three arguments must either be
95+ * zero or the or'ed combination of the bits specified in the
96+ * class Modifier or this class. During filtering, these values
97+ * are compared against the modifier bits as follows:
98+ *
99+ * @param oneOf If zero, ignore this argument.
100+ * If non-zero, at least one of the bits must be on.
101+ * @param must All bits specified must be on.
102+ * @param cannot None of the bits specified can be on.
103+ */
104+ public
105+ ModifierFilter(long oneOf, long must, long cannot) {
106+ this.oneOf = oneOf;
107+ this.must = must;
108+ this.cannot = cannot;
109+ }
110+
111+ /**
112+ * Filter on modifier bits.
113+ *
114+ * @param modifierBits Bits as specified in the Modifier class
115+ *
116+ * @return Whether the modifierBits pass this filter.
117+ */
118+ public boolean checkModifier(int modifierBits) {
119+ // Add in the "pseudo-" modifier bit PACKAGE, if needed
120+ long fmod = ((modifierBits & ACCESS_BITS) == 0) ?
121+ modifierBits | PACKAGE :
122+ modifierBits;
123+ return ((oneOf == 0) || ((oneOf & fmod) != 0)) &&
124+ ((must & fmod) == must) &&
125+ ((cannot & fmod) == 0);
126+ }
127+
128+ /**
129+ * Filter a MemberDefinition.
130+ *
131+ * @param field A MemberDefinition
132+ *
133+ * @return Whether the modifier of the field
134+ * passes this filter.
135+ *
136+ * @see sun.tools.MemberDefinition
137+ */
138+ public boolean checkMember(MemberDefinition field) {
139+ return checkModifier(field.getModifiers());
140+ }
141+
142+ /**
143+ * Filter a ClassDefinition.
144+ *
145+ * @param cdef A ClassDefinition
146+ *
147+ * @return Whether the modifier of the class
148+ * passes this filter.
149+ *
150+ * @see sun.tools.ClassDefinition
151+ */
152+ public boolean checkClass(ClassDefinition cdef) {
153+ return checkModifier(cdef.getModifiers());
154+ }
155+
156+} // end ModifierFilter