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

Tue, 03 Jun 2008 13:26:47 -0700

author
jjg
date
Tue, 03 Jun 2008 13:26:47 -0700
changeset 46
7708bd6d800d
child 54
eaf608c64fec
permissions
-rw-r--r--

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

jjg@46 1 /*
jjg@46 2 * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
jjg@46 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@46 4 *
jjg@46 5 * This code is free software; you can redistribute it and/or modify it
jjg@46 6 * under the terms of the GNU General Public License version 2 only, as
jjg@46 7 * published by the Free Software Foundation. Sun designates this
jjg@46 8 * particular file as subject to the "Classpath" exception as provided
jjg@46 9 * by Sun in the LICENSE file that accompanied this code.
jjg@46 10 *
jjg@46 11 * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@46 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@46 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
jjg@46 14 * version 2 for more details (a copy is included in the LICENSE file that
jjg@46 15 * accompanied this code).
jjg@46 16 *
jjg@46 17 * You should have received a copy of the GNU General Public License version
jjg@46 18 * 2 along with this work; if not, write to the Free Software Foundation,
jjg@46 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@46 20 *
jjg@46 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
jjg@46 22 * CA 95054 USA or visit www.sun.com if you need additional information or
jjg@46 23 * have any questions.
jjg@46 24 */
jjg@46 25
jjg@46 26 package com.sun.tools.classfile;
jjg@46 27
jjg@46 28 import java.io.IOException;
jjg@46 29 import java.util.Arrays;
jjg@46 30 import java.util.HashMap;
jjg@46 31 import java.util.Iterator;
jjg@46 32 import java.util.Map;
jjg@46 33
jjg@46 34 /*
jjg@46 35 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
jjg@46 36 * you write code that depends on this, you do so at your own risk.
jjg@46 37 * This code and its internal interfaces are subject to change or
jjg@46 38 * deletion without notice.</b>
jjg@46 39 */
jjg@46 40 public class Attributes implements Iterable<Attribute> {
jjg@46 41 Attributes(ClassReader cr) throws IOException {
jjg@46 42 map = new HashMap<String,Attribute>();
jjg@46 43 int attrs_count = cr.readUnsignedShort();
jjg@46 44 attrs = new Attribute[attrs_count];
jjg@46 45 for (int i = 0; i < attrs_count; i++) {
jjg@46 46 Attribute attr = Attribute.read(cr);
jjg@46 47 attrs[i] = attr;
jjg@46 48 try {
jjg@46 49 map.put(attr.getName(cr.getConstantPool()), attr);
jjg@46 50 } catch (ConstantPoolException e) {
jjg@46 51 // don't enter invalid names in map
jjg@46 52 }
jjg@46 53 }
jjg@46 54 }
jjg@46 55
jjg@46 56 public Attributes(ConstantPool constant_pool, Attribute[] attrs) {
jjg@46 57 this.attrs = attrs;
jjg@46 58 map = new HashMap<String,Attribute>();
jjg@46 59 for (int i = 0; i < attrs.length; i++) {
jjg@46 60 Attribute attr = attrs[i];
jjg@46 61 try {
jjg@46 62 map.put(attr.getName(constant_pool), attr);
jjg@46 63 } catch (ConstantPoolException e) {
jjg@46 64 // don't enter invalid names in map
jjg@46 65 }
jjg@46 66 }
jjg@46 67 }
jjg@46 68
jjg@46 69 public Iterator<Attribute> iterator() {
jjg@46 70 return Arrays.asList(attrs).iterator();
jjg@46 71 }
jjg@46 72
jjg@46 73 public Attribute get(int index) {
jjg@46 74 return attrs[index];
jjg@46 75 }
jjg@46 76
jjg@46 77 public Attribute get(String name) {
jjg@46 78 return map.get(name);
jjg@46 79 }
jjg@46 80
jjg@46 81 public int size() {
jjg@46 82 return attrs.length;
jjg@46 83 }
jjg@46 84
jjg@46 85 public final Attribute[] attrs;
jjg@46 86 public final Map<String, Attribute> map;
jjg@46 87 }

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