• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/classes/com/sun/tools/classfile/Attributes.java@9a7c998bf2fc (annotated)

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

Wed, 02 Jun 2010 19:08:47 -0700

author

darcy

date

Wed, 02 Jun 2010 19:08:47 -0700

changeset 575

9a7c998bf2fc

parent 554

9d9f26857129

child 581

f2fdd52e4e87

permissions

-rw-r--r--

6933147: Provided new utility visitors supporting SourceVersion.RELEASE_7
Reviewed-by: jjg

jjg@46	1	/*
ohair@554	2	* Copyright (c) 2007, 2008, Oracle and/or its affiliates. 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
ohair@554	7	* published by the Free Software Foundation. Oracle designates this
jjg@46	8	* particular file as subject to the "Classpath" exception as provided
ohair@554	9	* by Oracle 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	*
ohair@554	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554	22	* or visit www.oracle.com if you need additional information or have any
ohair@554	23	* 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@67	81	public int getIndex(ConstantPool constant_pool, String name) {
jjg@67	82	for (int i = 0; i < attrs.length; i++) {
jjg@67	83	Attribute attr = attrs[i];
jjg@67	84	try {
jjg@67	85	if (attr != null && attr.getName(constant_pool).equals(name))
jjg@67	86	return i;
jjg@67	87	} catch (ConstantPoolException e) {
jjg@67	88	// ignore invalid entries
jjg@67	89	}
jjg@67	90	}
jjg@67	91	return -1;
jjg@67	92	}
jjg@67	93
jjg@46	94	public int size() {
jjg@46	95	return attrs.length;
jjg@46	96	}
jjg@46	97
jjg@345	98	public int byteLength() {
jjg@345	99	int length = 2;
jjg@345	100	for (Attribute a: attrs)
jjg@345	101	length += a.byteLength();
jjg@345	102	return length;
jjg@345	103	}
jjg@345	104
jjg@46	105	public final Attribute[] attrs;
jjg@46	106	public final Map<String, Attribute> map;
jjg@46	107	}