com.sun.tools.classfile.ModuleHashes_attribute Maven / Gradle / Ivy
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/*
* Copyright (c) 2015, 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;
/**
* See JVMS, section 4.8.15.
*
* 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 ModuleHashes_attribute extends Attribute {
ModuleHashes_attribute(ClassReader cr, int name_index, int length) throws IOException {
super(name_index, length);
algorithm_index = cr.readUnsignedShort();
hashes_table_length = cr.readUnsignedShort();
hashes_table = new Entry[hashes_table_length];
for (int i = 0; i < hashes_table_length; i++)
hashes_table[i] = new Entry(cr);
}
public ModuleHashes_attribute(ConstantPool constant_pool, int algorithm_index, Entry[] hashes_table)
throws ConstantPoolException {
this(constant_pool.getUTF8Index(Attribute.ModuleHashes), algorithm_index, hashes_table);
}
public ModuleHashes_attribute(int name_index, int algorithm_index, Entry[] hashes_table) {
super(name_index, 2 + 2 + length(hashes_table));
this.algorithm_index = algorithm_index;
this.hashes_table_length = hashes_table.length;
this.hashes_table = hashes_table;
}
@Override
public R accept(Visitor visitor, D data) {
return visitor.visitModuleHashes(this, data);
}
private static int length(Entry[] hashes_table) {
int len = 0;
for (Entry e: hashes_table) {
len += e.length();
}
return len;
}
public final int algorithm_index;
public final int hashes_table_length;
public final Entry[] hashes_table;
public static class Entry {
Entry(ClassReader cr) throws IOException {
module_name_index = cr.readUnsignedShort();
int hash_length = cr.readUnsignedShort();
hash = new byte[hash_length];
for (int i=0; i