jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/classfile/Annotation.java@7708bd6d800d

4075303: Use javap to enquire aboput a specific inner class
4348375: Javap is not internationalized
4459541: "javap -l" shows line numbers as signed short; they should be unsigned
4501660: change diagnostic of -help as 'print this help message and exit'
4776241: unused source file in javap...
4870651: javap should recognize generics, varargs, enum
4876942: javap invoked without args does not print help screen
4880663: javap could output whitespace between class name and opening brace
4975569: javap doesn't print new flag bits
6271787: javap dumps LocalVariableTypeTable attribute in hex, needs to print a table
6305779: javap: support annotations
6439940: Clean up javap implementation
6469569: wrong check of searchpath in JavapEnvironment
6474890: javap does not open .zip files in -classpath
6587786: Javap throws error : "ERROR:Could not find <classname>" for JRE classes
6622215: javap ignores certain relevant access flags
6622216: javap names some attributes incorrectly
6622232: javap gets whitespace confused
6622260: javap prints negative bytes incorrectly in hex
Reviewed-by: ksrini

     1 /*

     2  * Copyright 2007 Sun Microsystems, Inc.  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.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    26 package com.sun.tools.classfile;

    28 import java.io.IOException;

    30 /**

    31  * See JVMS3, section 4.8.16.

    32  *

    33  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If

    34  *  you write code that depends on this, you do so at your own risk.

    35  *  This code and its internal interfaces are subject to change or

    36  *  deletion without notice.</b>

    37  */

    38 public class Annotation {

    39     static class InvalidAnnotation extends AttributeException {

    40         InvalidAnnotation(String msg) {

    41             super(msg);

    42         }

    43     }

    45     Annotation(ClassReader cr) throws IOException, InvalidAnnotation {

    46         type_index = cr.readUnsignedShort();

    47         num_element_value_pairs = cr.readUnsignedShort();

    48         element_value_pairs = new element_value_pair[num_element_value_pairs];

    49         for (int i = 0; i < element_value_pairs.length; i++)

    50             element_value_pairs[i] = new element_value_pair(cr);

    51     }

    53     public Annotation(ConstantPool constant_pool,

    54             int type_index,

    55             element_value_pair[] element_value_pairs) {

    56         this.type_index = type_index;

    57         num_element_value_pairs = element_value_pairs.length;

    58         this.element_value_pairs = element_value_pairs;

    59     }

    61     public int length() {

    62         int n = 2 /*type_index*/ + 2 /*num_element_value_pairs*/;

    63         for (element_value_pair pair: element_value_pairs)

    64             n += pair.length();

    65         return n;

    66     }

    68     public final int type_index;

    69     public final int num_element_value_pairs;

    70     public final element_value_pair element_value_pairs[];

    72     /**

    73      * See JVMS3, section 4.8.16.1.

    74      */

    75     public static abstract class element_value {

    76         public static element_value read(ClassReader cr)

    77                 throws IOException, InvalidAnnotation {

    78             int tag = cr.readUnsignedByte();

    79             switch (tag) {

    80             case 'B':

    81             case 'C':

    82             case 'D':

    83             case 'F':

    84             case 'I':

    85             case 'J':

    86             case 'S':

    87             case 'Z':

    88             case 's':

    89                 return new Primitive_element_value(cr, tag);

    91             case 'e':

    92                 return new Enum_element_value(cr, tag);

    94             case 'c':

    95                 return new Class_element_value(cr, tag);

    97             case '@':

    98                 return new Annotation_element_value(cr, tag);

   100             case '[':

   101                 return new Array_element_value(cr, tag);

   103             default:

   104                 throw new InvalidAnnotation("unrecognized tag: " + tag);

   105             }

   106         }

   108         protected element_value(int tag) {

   109             this.tag = tag;

   110         }

   112         public abstract int length();

   114         public abstract <R,P> R accept(Visitor<R,P> visitor, P p);

   116         public interface Visitor<R,P> {

   117             R visitPrimitive(Primitive_element_value ev, P p);

   118             R visitEnum(Enum_element_value ev, P p);

   119             R visitClass(Class_element_value ev, P p);

   120             R visitAnnotation(Annotation_element_value ev, P p);

   121             R visitArray(Array_element_value ev, P p);

   122         }

   124         public final int tag;

   125     }

   127     public static class Primitive_element_value extends element_value {

   128         Primitive_element_value(ClassReader cr, int tag) throws IOException {

   129             super(tag);

   130             const_value_index = cr.readUnsignedShort();

   131         }

   133         @Override

   134         public int length() {

   135             return 2;

   136         }

   138         public <R,P> R accept(Visitor<R,P> visitor, P p) {

   139             return visitor.visitPrimitive(this, p);

   140         }

   142         public final int const_value_index;

   144     }

   146     public static class Enum_element_value extends element_value {

   147         Enum_element_value(ClassReader cr, int tag) throws IOException {

   148             super(tag);

   149             type_name_index = cr.readUnsignedShort();

   150             const_name_index = cr.readUnsignedShort();

   151         }

   153         @Override

   154         public int length() {

   155             return 4;

   156         }

   158         public <R,P> R accept(Visitor<R,P> visitor, P p) {

   159             return visitor.visitEnum(this, p);

   160         }

   162         public final int type_name_index;

   163         public final int const_name_index;

   164     }

   166     public static class Class_element_value extends element_value {

   167         Class_element_value(ClassReader cr, int tag) throws IOException {

   168             super(tag);

   169             class_info_index = cr.readUnsignedShort();

   170         }

   172         @Override

   173         public int length() {

   174             return 2;

   175         }

   177         public <R,P> R accept(Visitor<R,P> visitor, P p) {

   178             return visitor.visitClass(this, p);

   179         }

   181         public final int class_info_index;

   182     }

   184     public static class Annotation_element_value extends element_value {

   185         Annotation_element_value(ClassReader cr, int tag)

   186                 throws IOException, InvalidAnnotation {

   187             super(tag);

   188             annotation_value = new Annotation(cr);

   189         }

   191         @Override

   192         public int length() {

   193             return annotation_value.length();

   194         }

   196         public <R,P> R accept(Visitor<R,P> visitor, P p) {

   197             return visitor.visitAnnotation(this, p);

   198         }

   200         public final Annotation annotation_value;

   201     }

   203     public static class Array_element_value extends element_value {

   204         Array_element_value(ClassReader cr, int tag)

   205                 throws IOException, InvalidAnnotation {

   206             super(tag);

   207             num_values = cr.readUnsignedShort();

   208             values = new element_value[num_values];

   209             for (int i = 0; i < values.length; i++)

   210                 values[i] = element_value.read(cr);

   211         }

   213         @Override

   214         public int length() {

   215             int n = 2;

   216             for (int i = 0; i < values.length; i++)

   217                 n += values[i].length();

   218             return n;

   219         }

   221         public <R,P> R accept(Visitor<R,P> visitor, P p) {

   222             return visitor.visitArray(this, p);

   223         }

   225         public final int num_values;

   226         public final element_value[] values;

   227     }

   229     public static class element_value_pair {

   230         element_value_pair(ClassReader cr)

   231                 throws IOException, InvalidAnnotation {

   232             element_name_index = cr.readUnsignedShort();

   233             value = element_value.read(cr);

   234         }

   236         public int length() {

   237             return 2 + value.length();

   238         }

   240         public final int element_name_index;

   241         public final element_value value;

   242     }

   243 }

Mercurial > jdk8-mips64-public > langtools / file revision

src/share/classes/com/sun/tools/classfile/Annotation.java@7708bd6d800d

src/share/classes/com/sun/tools/classfile/Annotation.java