| /* |
| * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.classfile; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /* |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class Attributes implements Iterable<Attribute> { |
| |
| public final Attribute[] attrs; |
| public final Map<String, Attribute> map; |
| |
| Attributes(ClassReader cr) throws IOException { |
| map = new HashMap<>(); |
| int attrs_count = cr.readUnsignedShort(); |
| attrs = new Attribute[attrs_count]; |
| for (int i = 0; i < attrs_count; i++) { |
| Attribute attr = Attribute.read(cr); |
| attrs[i] = attr; |
| try { |
| map.put(attr.getName(cr.getConstantPool()), attr); |
| } catch (ConstantPoolException e) { |
| // don't enter invalid names in map |
| } |
| } |
| } |
| |
| public Attributes(ConstantPool constant_pool, Attribute[] attrs) { |
| this.attrs = attrs; |
| map = new HashMap<>(); |
| for (Attribute attr : attrs) { |
| try { |
| map.put(attr.getName(constant_pool), attr); |
| } catch (ConstantPoolException e) { |
| // don't enter invalid names in map |
| } |
| } |
| } |
| |
| public Attributes(Map<String, Attribute> attributes) { |
| this.attrs = attributes.values().toArray(new Attribute[attributes.size()]); |
| map = attributes; |
| } |
| |
| public Iterator<Attribute> iterator() { |
| return Arrays.asList(attrs).iterator(); |
| } |
| |
| public Attribute get(int index) { |
| return attrs[index]; |
| } |
| |
| public Attribute get(String name) { |
| return map.get(name); |
| } |
| |
| public int getIndex(ConstantPool constant_pool, String name) { |
| for (int i = 0; i < attrs.length; i++) { |
| Attribute attr = attrs[i]; |
| try { |
| if (attr != null && attr.getName(constant_pool).equals(name)) |
| return i; |
| } catch (ConstantPoolException e) { |
| // ignore invalid entries |
| } |
| } |
| return -1; |
| } |
| |
| public int size() { |
| return attrs.length; |
| } |
| |
| public int byteLength() { |
| int length = 2; |
| for (Attribute a: attrs) |
| length += a.byteLength(); |
| return length; |
| } |
| } |