1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.classfile; 27 28 import java.io.IOException; 29 30 import com.sun.tools.classfile.ConstantPool.CONSTANT_Package_info; 31 32 /** 33 * See JVMS, section 4.8.15. 34 * 35 * <p><b>This is NOT part of any supported API. 36 * If you write code that depends on this, you do so at your own risk. 37 * This code and its internal interfaces are subject to change or 38 * deletion without notice.</b> 39 */ 40 public class ModulePackages_attribute extends Attribute { 41 ModulePackages_attribute(ClassReader cr, int name_index, int length) 42 throws IOException { 43 super(name_index, length); 44 packages_count = cr.readUnsignedShort(); 45 packages_index = new int[packages_count]; 46 for (int i = 0; i < packages_count; i++) 47 packages_index[i] = cr.readUnsignedShort(); 48 } 49 50 public ModulePackages_attribute(ConstantPool constant_pool, 51 int[] packages_index) 52 throws ConstantPoolException { 53 this(constant_pool.getUTF8Index(Attribute.ModulePackages), 54 packages_index); 55 } 56 57 public ModulePackages_attribute(int name_index, 58 int[] packages_index) { 59 super(name_index, 2 + packages_index.length * 2); 60 this.packages_count = packages_index.length; 61 this.packages_index = packages_index; 62 } 63 64 public String getPackage(int index, ConstantPool constant_pool) throws ConstantPoolException { 65 int package_index = packages_index[index]; 66 CONSTANT_Package_info info = constant_pool.getPackageInfo(package_index); 67 return info.getName(); 68 } 69 70 @Override 71 public <R, D> R accept(Visitor<R, D> visitor, D data) { 72 return visitor.visitModulePackages(this, data); 73 } 74 75 public final int packages_count; 76 public final int[] packages_index; 77 }