Options.java revision 2942:08092deced3f 
1/*
2 * Copyright (c) 2007, 2014, 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
26package com.sun.tools.javap;
27
28import java.util.EnumSet;
29import java.util.HashSet;
30import java.util.Set;
31
32import com.sun.tools.classfile.AccessFlags;
33
34/*
35 *  Provides access to javap's options, set via the command line
36 *  or JSR 199 API.
37 *  <p><b>This is NOT part of any supported API.
38 *  If you write code that depends on this, you do so at your own risk.
39 *  This code and its internal interfaces are subject to change or
40 *  deletion without notice.</b>
41 */
42public class Options {
43    public static Options instance(Context context) {
44        Options instance = context.get(Options.class);
45        if (instance == null)
46            instance = new Options(context);
47        return instance;
48    }
49
50    protected Options(Context context) {
51        context.put(Options.class, this);
52    }
53
54    /**
55     * Checks access of class, field or method.
56     */
57    public boolean checkAccess(AccessFlags flags){
58
59        boolean isPublic = flags.is(AccessFlags.ACC_PUBLIC);
60        boolean isProtected = flags.is(AccessFlags.ACC_PROTECTED);
61        boolean isPrivate = flags.is(AccessFlags.ACC_PRIVATE);
62        boolean isPackage = !(isPublic || isProtected || isPrivate);
63
64        if ((showAccess == AccessFlags.ACC_PUBLIC) && (isProtected || isPrivate || isPackage))
65            return false;
66        else if ((showAccess == AccessFlags.ACC_PROTECTED) && (isPrivate || isPackage))
67            return false;
68        else if ((showAccess == 0) && (isPrivate))
69            return false;
70        else
71            return true;
72    }
73
74    public boolean help;
75    public boolean verbose;
76    public boolean version;
77    public boolean fullVersion;
78    public boolean showFlags;
79    public boolean showLineAndLocalVariableTables;
80    public int showAccess;
81    public Set<String> accessOptions = new HashSet<>();
82    public Set<InstructionDetailWriter.Kind> details = EnumSet.noneOf(InstructionDetailWriter.Kind.class);
83    public boolean showDisassembled;
84    public boolean showDescriptors;
85    public boolean showAllAttrs;
86    public boolean showConstants;
87    public boolean sysInfo;
88    public boolean showInnerClasses;
89    public int indentWidth = 2;   // #spaces per indentWidth level; must be > 0
90    public int tabColumn = 40;    // column number for comments; must be > 0
91}
92