jjg@46: /*
xdono@54:  * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
jjg@46:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@46:  *
jjg@46:  * This code is free software; you can redistribute it and/or modify it
jjg@46:  * under the terms of the GNU General Public License version 2 only, as
jjg@46:  * published by the Free Software Foundation.  Sun designates this
jjg@46:  * particular file as subject to the "Classpath" exception as provided
jjg@46:  * by Sun in the LICENSE file that accompanied this code.
jjg@46:  *
jjg@46:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@46:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@46:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@46:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@46:  * accompanied this code).
jjg@46:  *
jjg@46:  * You should have received a copy of the GNU General Public License version
jjg@46:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@46:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@46:  *
jjg@46:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
jjg@46:  * CA 95054 USA or visit www.sun.com if you need additional information or
jjg@46:  * have any questions.
jjg@46:  */
jjg@46: 
jjg@46: package com.sun.tools.classfile;
jjg@46: 
jjg@46: import java.io.File;
jjg@46: import java.io.FileInputStream;
jjg@46: import java.io.IOException;
jjg@46: import java.io.InputStream;
jjg@46: 
jjg@46: import static com.sun.tools.classfile.AccessFlags.*;
jjg@46: 
jjg@46: /**
jjg@46:  * See JVMS3, section 4.2.
jjg@46:  *
jjg@46:  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
jjg@46:  *  you write code that depends on this, you do so at your own risk.
jjg@46:  *  This code and its internal interfaces are subject to change or
jjg@46:  *  deletion without notice.</b>
jjg@46:  */
jjg@46: public class ClassFile {
jjg@46:     public static ClassFile read(File file)
jjg@46:             throws IOException, ConstantPoolException {
jjg@46:         return read(file, new Attribute.Factory());
jjg@46:     }
jjg@46: 
jjg@46:     public static ClassFile read(File file, Attribute.Factory attributeFactory)
jjg@46:             throws IOException, ConstantPoolException {
jjg@46:         FileInputStream in = new FileInputStream(file);
jjg@46:         try {
jjg@46:             return new ClassFile(in, attributeFactory);
jjg@46:         } finally {
jjg@46:             try {
jjg@46:                 in.close();
jjg@46:             } catch (IOException e) {
jjg@46:                 // ignore
jjg@46:             }
jjg@46:         }
jjg@46:     }
jjg@46: 
jjg@46:     public static ClassFile read(InputStream in)
jjg@46:             throws IOException, ConstantPoolException {
jjg@46:         return new ClassFile(in, new Attribute.Factory());
jjg@46:     }
jjg@46: 
jjg@46:     public static ClassFile read(InputStream in, Attribute.Factory attributeFactory)
jjg@46:             throws IOException, ConstantPoolException {
jjg@46:         return new ClassFile(in, attributeFactory);
jjg@46:     }
jjg@46: 
jjg@46:     ClassFile(InputStream in, Attribute.Factory attributeFactory) throws IOException, ConstantPoolException {
jjg@46:         ClassReader cr = new ClassReader(this, in, attributeFactory);
jjg@46:         magic = cr.readInt();
jjg@46:         minor_version = cr.readUnsignedShort();
jjg@46:         major_version = cr.readUnsignedShort();
jjg@46:         constant_pool = new ConstantPool(cr);
jjg@46:         access_flags = new AccessFlags(cr);
jjg@46:         this_class = cr.readUnsignedShort();
jjg@46:         super_class = cr.readUnsignedShort();
jjg@46: 
jjg@46:         int interfaces_count = cr.readUnsignedShort();
jjg@46:         interfaces = new int[interfaces_count];
jjg@46:         for (int i = 0; i < interfaces_count; i++)
jjg@46:             interfaces[i] = cr.readUnsignedShort();
jjg@46: 
jjg@46:         int fields_count = cr.readUnsignedShort();
jjg@46:         fields = new Field[fields_count];
jjg@46:         for (int i = 0; i < fields_count; i++)
jjg@46:             fields[i] = new Field(cr);
jjg@46: 
jjg@46:         int methods_count = cr.readUnsignedShort();
jjg@46:         methods = new Method[methods_count];
jjg@46:         for (int i = 0; i < methods_count; i++)
jjg@46:             methods[i] = new Method(cr);
jjg@46: 
jjg@46:         attributes = new Attributes(cr);
jjg@46:     }
jjg@46: 
jjg@46:     public ClassFile(int magic, int minor_version, int major_version,
jjg@46:             ConstantPool constant_pool, AccessFlags access_flags,
jjg@46:             int this_class, int super_class, int[] interfaces,
jjg@46:             Field[] fields, Method[] methods, Attributes attributes) {
jjg@46:         this.magic = magic;
jjg@46:         this.minor_version = minor_version;
jjg@46:         this.major_version = major_version;
jjg@46:         this.constant_pool = constant_pool;
jjg@46:         this.access_flags = access_flags;
jjg@46:         this.this_class = this_class;
jjg@46:         this.super_class = super_class;
jjg@46:         this.interfaces = interfaces;
jjg@46:         this.fields = fields;
jjg@46:         this.methods = methods;
jjg@46:         this.attributes = attributes;
jjg@46:     }
jjg@46: 
jjg@46:     public String getName() throws ConstantPoolException {
jjg@46:         return constant_pool.getClassInfo(this_class).getName();
jjg@46:     }
jjg@46: 
jjg@46:     public String getSuperclassName() throws ConstantPoolException {
jjg@46:         return constant_pool.getClassInfo(super_class).getName();
jjg@46:     }
jjg@46: 
jjg@46:     public String getInterfaceName(int i) throws ConstantPoolException {
jjg@46:         return constant_pool.getClassInfo(interfaces[i]).getName();
jjg@46:     }
jjg@46: 
jjg@46:     public Attribute getAttribute(String name) {
jjg@46:         return attributes.get(name);
jjg@46:     }
jjg@46: 
jjg@46:     public boolean isClass() {
jjg@46:         return !isInterface();
jjg@46:     }
jjg@46: 
jjg@46:     public boolean isInterface() {
jjg@46:         return access_flags.is(ACC_INTERFACE);
jjg@46:     }
jjg@46: 
jjg@46:     public final int magic;
jjg@46:     public final int minor_version;
jjg@46:     public final int major_version;
jjg@46:     public final ConstantPool constant_pool;
jjg@46:     public final AccessFlags access_flags;
jjg@46:     public final int this_class;
jjg@46:     public final int super_class;
jjg@46:     public final int[] interfaces;
jjg@46:     public final Field[] fields;
jjg@46:     public final Method[] methods;
jjg@46:     public final Attributes attributes;
jjg@46: }