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 ClassReader { - ClassReader(ClassFile classFile, InputStream in, Attribute.Factory attributeFactory) throws IOException { - this.classFile = Objects.requireNonNull(classFile); - this.attributeFactory = Objects.requireNonNull(attributeFactory); - this.in = new DataInputStream(new BufferedInputStream(in)); - } - - ClassFile getClassFile() { - return classFile; - } - - ConstantPool getConstantPool() { - return classFile.constant_pool; - } - - public Attribute readAttribute() throws IOException { - int name_index = readUnsignedShort(); - int length = readInt(); - byte[] data = new byte[length]; - readFully(data); - - DataInputStream prev = in; - in = new DataInputStream(new ByteArrayInputStream(data)); - try { - return attributeFactory.createAttribute(this, name_index, data); - } finally { - in = prev; - } - } - - public void readFully(byte[] b) throws IOException { - in.readFully(b); - } - - public int readUnsignedByte() throws IOException { - return in.readUnsignedByte(); - } - - public int readUnsignedShort() throws IOException { - return in.readUnsignedShort(); - } - - public int readInt() throws IOException { - return in.readInt(); - } - - public long readLong() throws IOException { - return in.readLong(); - } - - public float readFloat() throws IOException { - return in.readFloat(); - } - - public double readDouble() throws IOException { - return in.readDouble(); - } - - public String readUTF() throws IOException { - return in.readUTF(); - } - - private DataInputStream in; - private ClassFile classFile; - private Attribute.Factory attributeFactory; -} --- /dev/null 2015-04-26 22:05:36.465433038 -0700 +++ new/langtools/src/jdk.jdeps/share/classes/com/sun/tools/classfile/ClassReader.java 2015-05-26 21:42:17.767832799 -0700 @@ -0,0 +1,106 @@ +/* + * 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.BufferedInputStream; +import java.io.ByteArrayInputStream; +import java.io.DataInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.Objects; + +/** + *
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 ClassReader { + ClassReader(ClassFile classFile, InputStream in, Attribute.Factory attributeFactory) throws IOException { + this.classFile = Objects.requireNonNull(classFile); + this.attributeFactory = Objects.requireNonNull(attributeFactory); + this.in = new DataInputStream(new BufferedInputStream(in)); + } + + ClassFile getClassFile() { + return classFile; + } + + ConstantPool getConstantPool() { + return classFile.constant_pool; + } + + public Attribute readAttribute() throws IOException { + int name_index = readUnsignedShort(); + int length = readInt(); + byte[] data = new byte[length]; + readFully(data); + + DataInputStream prev = in; + in = new DataInputStream(new ByteArrayInputStream(data)); + try { + return attributeFactory.createAttribute(this, name_index, data); + } finally { + in = prev; + } + } + + public void readFully(byte[] b) throws IOException { + in.readFully(b); + } + + public int readUnsignedByte() throws IOException { + return in.readUnsignedByte(); + } + + public int readUnsignedShort() throws IOException { + return in.readUnsignedShort(); + } + + public int readInt() throws IOException { + return in.readInt(); + } + + public long readLong() throws IOException { + return in.readLong(); + } + + public float readFloat() throws IOException { + return in.readFloat(); + } + + public double readDouble() throws IOException { + return in.readDouble(); + } + + public String readUTF() throws IOException { + return in.readUTF(); + } + + private DataInputStream in; + private ClassFile classFile; + private Attribute.Factory attributeFactory; +}