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/*
* 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
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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;
/*
* 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.
*/
public class Attributes implements Iterable {
public final Attribute[] attrs;
public final Map 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 attributes) {
this.attrs = attributes.values().toArray(new Attribute[attributes.size()]);
map = attributes;
}
public Iterator 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;
}
}