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 

    26 package com.sun.tools.javap;

    27 

    28 import java.util.EnumSet;

    29 import java.util.HashSet;

    30 import java.util.Set;

    31 

    32 import 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  */

    42 public 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 }