diff -r f7e64b33d5a4 -r 7708bd6d800d src/share/classes/com/sun/tools/classfile/ClassFile.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/classes/com/sun/tools/classfile/ClassFile.java Tue Jun 03 13:26:47 2008 -0700 @@ -0,0 +1,153 @@ +/* + * Copyright 2007 Sun Microsystems, Inc. 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. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +package com.sun.tools.classfile; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.InputStream; + +import static com.sun.tools.classfile.AccessFlags.*; + +/** + * See JVMS3, section 4.2. + * + *

This is NOT part of any API supported by Sun Microsystems. 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 ClassFile { + public static ClassFile read(File file) + throws IOException, ConstantPoolException { + return read(file, new Attribute.Factory()); + } + + public static ClassFile read(File file, Attribute.Factory attributeFactory) + throws IOException, ConstantPoolException { + FileInputStream in = new FileInputStream(file); + try { + return new ClassFile(in, attributeFactory); + } finally { + try { + in.close(); + } catch (IOException e) { + // ignore + } + } + } + + public static ClassFile read(InputStream in) + throws IOException, ConstantPoolException { + return new ClassFile(in, new Attribute.Factory()); + } + + public static ClassFile read(InputStream in, Attribute.Factory attributeFactory) + throws IOException, ConstantPoolException { + return new ClassFile(in, attributeFactory); + } + + ClassFile(InputStream in, Attribute.Factory attributeFactory) throws IOException, ConstantPoolException { + ClassReader cr = new ClassReader(this, in, attributeFactory); + magic = cr.readInt(); + minor_version = cr.readUnsignedShort(); + major_version = cr.readUnsignedShort(); + constant_pool = new ConstantPool(cr); + access_flags = new AccessFlags(cr); + this_class = cr.readUnsignedShort(); + super_class = cr.readUnsignedShort(); + + int interfaces_count = cr.readUnsignedShort(); + interfaces = new int[interfaces_count]; + for (int i = 0; i < interfaces_count; i++) + interfaces[i] = cr.readUnsignedShort(); + + int fields_count = cr.readUnsignedShort(); + fields = new Field[fields_count]; + for (int i = 0; i < fields_count; i++) + fields[i] = new Field(cr); + + int methods_count = cr.readUnsignedShort(); + methods = new Method[methods_count]; + for (int i = 0; i < methods_count; i++) + methods[i] = new Method(cr); + + attributes = new Attributes(cr); + } + + public ClassFile(int magic, int minor_version, int major_version, + ConstantPool constant_pool, AccessFlags access_flags, + int this_class, int super_class, int[] interfaces, + Field[] fields, Method[] methods, Attributes attributes) { + this.magic = magic; + this.minor_version = minor_version; + this.major_version = major_version; + this.constant_pool = constant_pool; + this.access_flags = access_flags; + this.this_class = this_class; + this.super_class = super_class; + this.interfaces = interfaces; + this.fields = fields; + this.methods = methods; + this.attributes = attributes; + } + + public String getName() throws ConstantPoolException { + return constant_pool.getClassInfo(this_class).getName(); + } + + public String getSuperclassName() throws ConstantPoolException { + return constant_pool.getClassInfo(super_class).getName(); + } + + public String getInterfaceName(int i) throws ConstantPoolException { + return constant_pool.getClassInfo(interfaces[i]).getName(); + } + + public Attribute getAttribute(String name) { + return attributes.get(name); + } + + public boolean isClass() { + return !isInterface(); + } + + public boolean isInterface() { + return access_flags.is(ACC_INTERFACE); + } + + public final int magic; + public final int minor_version; + public final int major_version; + public final ConstantPool constant_pool; + public final AccessFlags access_flags; + public final int this_class; + public final int super_class; + public final int[] interfaces; + public final Field[] fields; + public final Method[] methods; + public final Attributes attributes; +}