1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/classfile/ClassFile.java Tue Jun 03 13:26:47 2008 -0700
1.3 @@ -0,0 +1,153 @@
1.4 +/*
1.5 + * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Sun designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Sun in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.25 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.26 + * have any questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.classfile;
1.30 +
1.31 +import java.io.File;
1.32 +import java.io.FileInputStream;
1.33 +import java.io.IOException;
1.34 +import java.io.InputStream;
1.35 +
1.36 +import static com.sun.tools.classfile.AccessFlags.*;
1.37 +
1.38 +/**
1.39 + * See JVMS3, section 4.2.
1.40 + *
1.41 + * <p><b>This is NOT part of any API supported by Sun Microsystems. If
1.42 + * you write code that depends on this, you do so at your own risk.
1.43 + * This code and its internal interfaces are subject to change or
1.44 + * deletion without notice.</b>
1.45 + */
1.46 +public class ClassFile {
1.47 + public static ClassFile read(File file)
1.48 + throws IOException, ConstantPoolException {
1.49 + return read(file, new Attribute.Factory());
1.50 + }
1.51 +
1.52 + public static ClassFile read(File file, Attribute.Factory attributeFactory)
1.53 + throws IOException, ConstantPoolException {
1.54 + FileInputStream in = new FileInputStream(file);
1.55 + try {
1.56 + return new ClassFile(in, attributeFactory);
1.57 + } finally {
1.58 + try {
1.59 + in.close();
1.60 + } catch (IOException e) {
1.61 + // ignore
1.62 + }
1.63 + }
1.64 + }
1.65 +
1.66 + public static ClassFile read(InputStream in)
1.67 + throws IOException, ConstantPoolException {
1.68 + return new ClassFile(in, new Attribute.Factory());
1.69 + }
1.70 +
1.71 + public static ClassFile read(InputStream in, Attribute.Factory attributeFactory)
1.72 + throws IOException, ConstantPoolException {
1.73 + return new ClassFile(in, attributeFactory);
1.74 + }
1.75 +
1.76 + ClassFile(InputStream in, Attribute.Factory attributeFactory) throws IOException, ConstantPoolException {
1.77 + ClassReader cr = new ClassReader(this, in, attributeFactory);
1.78 + magic = cr.readInt();
1.79 + minor_version = cr.readUnsignedShort();
1.80 + major_version = cr.readUnsignedShort();
1.81 + constant_pool = new ConstantPool(cr);
1.82 + access_flags = new AccessFlags(cr);
1.83 + this_class = cr.readUnsignedShort();
1.84 + super_class = cr.readUnsignedShort();
1.85 +
1.86 + int interfaces_count = cr.readUnsignedShort();
1.87 + interfaces = new int[interfaces_count];
1.88 + for (int i = 0; i < interfaces_count; i++)
1.89 + interfaces[i] = cr.readUnsignedShort();
1.90 +
1.91 + int fields_count = cr.readUnsignedShort();
1.92 + fields = new Field[fields_count];
1.93 + for (int i = 0; i < fields_count; i++)
1.94 + fields[i] = new Field(cr);
1.95 +
1.96 + int methods_count = cr.readUnsignedShort();
1.97 + methods = new Method[methods_count];
1.98 + for (int i = 0; i < methods_count; i++)
1.99 + methods[i] = new Method(cr);
1.100 +
1.101 + attributes = new Attributes(cr);
1.102 + }
1.103 +
1.104 + public ClassFile(int magic, int minor_version, int major_version,
1.105 + ConstantPool constant_pool, AccessFlags access_flags,
1.106 + int this_class, int super_class, int[] interfaces,
1.107 + Field[] fields, Method[] methods, Attributes attributes) {
1.108 + this.magic = magic;
1.109 + this.minor_version = minor_version;
1.110 + this.major_version = major_version;
1.111 + this.constant_pool = constant_pool;
1.112 + this.access_flags = access_flags;
1.113 + this.this_class = this_class;
1.114 + this.super_class = super_class;
1.115 + this.interfaces = interfaces;
1.116 + this.fields = fields;
1.117 + this.methods = methods;
1.118 + this.attributes = attributes;
1.119 + }
1.120 +
1.121 + public String getName() throws ConstantPoolException {
1.122 + return constant_pool.getClassInfo(this_class).getName();
1.123 + }
1.124 +
1.125 + public String getSuperclassName() throws ConstantPoolException {
1.126 + return constant_pool.getClassInfo(super_class).getName();
1.127 + }
1.128 +
1.129 + public String getInterfaceName(int i) throws ConstantPoolException {
1.130 + return constant_pool.getClassInfo(interfaces[i]).getName();
1.131 + }
1.132 +
1.133 + public Attribute getAttribute(String name) {
1.134 + return attributes.get(name);
1.135 + }
1.136 +
1.137 + public boolean isClass() {
1.138 + return !isInterface();
1.139 + }
1.140 +
1.141 + public boolean isInterface() {
1.142 + return access_flags.is(ACC_INTERFACE);
1.143 + }
1.144 +
1.145 + public final int magic;
1.146 + public final int minor_version;
1.147 + public final int major_version;
1.148 + public final ConstantPool constant_pool;
1.149 + public final AccessFlags access_flags;
1.150 + public final int this_class;
1.151 + public final int super_class;
1.152 + public final int[] interfaces;
1.153 + public final Field[] fields;
1.154 + public final Method[] methods;
1.155 + public final Attributes attributes;
1.156 +}
