1 /*
   2  * Copyright (c) 2015, 2017, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import java.net.URI;
  25 import java.lang.module.ModuleDescriptor;
  26 import java.util.Collections;
  27 import java.util.HashSet;
  28 import java.util.Set;
  29 
  30 import sun.hotspot.WhiteBox;
  31 
  32 public class ModuleHelper {
  33 
  34     public static void DefineModule(Object module, boolean is_open, String version,
  35                                     String location, String[] pkgs) throws Throwable {
  36         WhiteBox wb = WhiteBox.getWhiteBox();
  37         wb.DefineModule(module, is_open, version, location, pkgs);
  38     }
  39 
  40     public static void AddModuleExports(Object from, String pkg, Object to) throws Throwable {
  41         WhiteBox wb = WhiteBox.getWhiteBox();
  42         wb.AddModuleExports(from, pkg, to);
  43         java.lang.ModuleHelper.addExportsNoSync((Module)from, pkg, (Module)to);
  44     }
  45 
  46     public static void AddReadsModule(Object from, Object to) throws Throwable {
  47         WhiteBox wb = WhiteBox.getWhiteBox();
  48         wb.AddReadsModule(from, to);
  49         java.lang.ModuleHelper.addReadsNoSync((Module)from, (Module)to);
  50     }
  51 
  52     public static void AddModulePackage(Object m, String pkg) throws Throwable {
  53         WhiteBox wb = WhiteBox.getWhiteBox();
  54         wb.AddModulePackage(m, pkg);
  55         java.lang.ModuleHelper.addPackageNoSync((Module)m, pkg);
  56     }
  57 
  58     public static void AddModuleExportsToAllUnnamed(Object m, String pkg) throws Throwable {
  59         WhiteBox wb = WhiteBox.getWhiteBox();
  60         wb.AddModuleExportsToAllUnnamed(m, pkg);
  61         //java.lang.ModuleHelper.addExportsToAllUnnamedNoSync((Module)m, pkg);
  62     }
  63 
  64     public static void AddModuleExportsToAll(Object m, String pkg) throws Throwable {
  65         WhiteBox wb = WhiteBox.getWhiteBox();
  66         wb.AddModuleExportsToAll(m, pkg);
  67         java.lang.ModuleHelper.addExportsNoSync((Module)m, pkg, (Module)null);
  68     }
  69 
  70     public static Module ModuleObject(String name, ClassLoader loader, String[] pkgs) throws Throwable {
  71         Set<String> pkg_set = new HashSet<>();
  72         if (pkgs != null) {
  73             for (String pkg: pkgs) {
  74                 pkg_set.add(pkg.replace('/', '.'));
  75             }
  76         } else {
  77             pkg_set = Collections.emptySet();
  78         }
  79 
  80         ModuleDescriptor descriptor =
  81             ModuleDescriptor.newModule(name).packages(pkg_set).build();
  82         URI uri = URI.create("module:/" + name);
  83 
  84         return java.lang.ModuleHelper.newModule(loader, descriptor);
  85     }
  86 
  87 }