Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/com/sun/tools/classfile/ClassReader.java@bc456436c613 (annotated)
src/share/classes/com/sun/tools/classfile/ClassReader.java
Tue, 12 Feb 2013 17:15:29 -0800
- author
- jjg
- date
- Tue, 12 Feb 2013 17:15:29 -0800
- changeset 1563
- bc456436c613
- parent 581
- f2fdd52e4e87
- child 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
8008077: update reference impl for type-annotations
Reviewed-by: jjg
Contributed-by: wmdietl@cs.washington.edu
| 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.BufferedInputStream; |
| jjg@46 | 29 | import java.io.ByteArrayInputStream; |
| jjg@46 | 30 | import java.io.DataInputStream; |
| jjg@46 | 31 | import java.io.IOException; |
| jjg@46 | 32 | import java.io.InputStream; |
| jjg@46 | 33 | |
| jjg@46 | 34 | /** |
| jjg@581 | 35 | * <p><b>This is NOT part of any supported API. |
| jjg@581 | 36 | * If 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 ClassReader { |
| jjg@46 | 41 | ClassReader(ClassFile classFile, InputStream in, Attribute.Factory attributeFactory) throws IOException { |
| jjg@46 | 42 | // null checks |
| jjg@46 | 43 | classFile.getClass(); |
| jjg@46 | 44 | attributeFactory.getClass(); |
| jjg@46 | 45 | |
| jjg@46 | 46 | this.classFile = classFile; |
| jjg@46 | 47 | this.in = new DataInputStream(new BufferedInputStream(in)); |
| jjg@46 | 48 | this.attributeFactory = attributeFactory; |
| jjg@46 | 49 | } |
| jjg@46 | 50 | |
| jjg@46 | 51 | ClassFile getClassFile() { |
| jjg@46 | 52 | return classFile; |
| jjg@46 | 53 | } |
| jjg@46 | 54 | |
| jjg@46 | 55 | ConstantPool getConstantPool() { |
| jjg@46 | 56 | return classFile.constant_pool; |
| jjg@46 | 57 | } |
| jjg@46 | 58 | |
| jjg@46 | 59 | public Attribute readAttribute() throws IOException { |
| jjg@46 | 60 | int name_index = readUnsignedShort(); |
| jjg@46 | 61 | int length = readInt(); |
| jjg@46 | 62 | byte[] data = new byte[length]; |
| jjg@46 | 63 | readFully(data); |
| jjg@46 | 64 | |
| jjg@46 | 65 | DataInputStream prev = in; |
| jjg@46 | 66 | in = new DataInputStream(new ByteArrayInputStream(data)); |
| jjg@46 | 67 | try { |
| jjg@46 | 68 | return attributeFactory.createAttribute(this, name_index, data); |
| jjg@46 | 69 | } finally { |
| jjg@46 | 70 | in = prev; |
| jjg@46 | 71 | } |
| jjg@46 | 72 | } |
| jjg@46 | 73 | |
| jjg@46 | 74 | public void readFully(byte[] b) throws IOException { |
| jjg@46 | 75 | in.readFully(b); |
| jjg@46 | 76 | } |
| jjg@46 | 77 | |
| jjg@46 | 78 | public int readUnsignedByte() throws IOException { |
| jjg@46 | 79 | return in.readUnsignedByte(); |
| jjg@46 | 80 | } |
| jjg@46 | 81 | |
| jjg@46 | 82 | public int readUnsignedShort() throws IOException { |
| jjg@46 | 83 | return in.readUnsignedShort(); |
| jjg@46 | 84 | } |
| jjg@46 | 85 | |
| jjg@46 | 86 | public int readInt() throws IOException { |
| jjg@46 | 87 | return in.readInt(); |
| jjg@46 | 88 | } |
| jjg@46 | 89 | |
| jjg@46 | 90 | public long readLong() throws IOException { |
| jjg@46 | 91 | return in.readLong(); |
| jjg@46 | 92 | } |
| jjg@46 | 93 | |
| jjg@46 | 94 | public float readFloat() throws IOException { |
| jjg@46 | 95 | return in.readFloat(); |
| jjg@46 | 96 | } |
| jjg@46 | 97 | |
| jjg@46 | 98 | public double readDouble() throws IOException { |
| jjg@46 | 99 | return in.readDouble(); |
| jjg@46 | 100 | } |
| jjg@46 | 101 | |
| jjg@46 | 102 | public String readUTF() throws IOException { |
| jjg@46 | 103 | return in.readUTF(); |
| jjg@46 | 104 | } |
| jjg@46 | 105 | |
| jjg@46 | 106 | private DataInputStream in; |
| jjg@46 | 107 | private ClassFile classFile; |
| jjg@46 | 108 | private Attribute.Factory attributeFactory; |
| jjg@46 | 109 | } |
