content: /*
   * Copyright (c) 2015, 2016, Oracle and/or its affiliates. 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.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package openjdk.tools.classfile;
  
  import java.io.IOException;
  
  import openjdk.tools.classfile.ConstantPool.CONSTANT_Module_info;
  
  /**
   * See Jigsaw.
   *
   *  <p><b>This is NOT part of any supported API.
   *  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.</b>
   */
  public class Module_attribute extends Attribute {
      public static final int ACC_TRANSITIVE      =   0x20;
      public static final int ACC_STATIC_PHASE    =   0x40;
      public static final int ACC_OPEN            =   0x20;
      public static final int ACC_SYNTHETIC       = 0x1000;
      public static final int ACC_MANDATED        = 0x8000;
  
      Module_attribute(ClassReader cr, int name_index, int length) throws IOException {
          super(name_index, length);
  
          module_name = cr.readUnsignedShort();
          module_flags = cr.readUnsignedShort();
  
          module_version_index = cr.readUnsignedShort();
  
          requires_count = cr.readUnsignedShort();
          requires = new RequiresEntry[requires_count];
          for (int i = 0; i < requires_count; i++)
              requires[i] = new RequiresEntry(cr);
  
          exports_count = cr.readUnsignedShort();
          exports = new ExportsEntry[exports_count];
          for (int i = 0; i < exports_count; i++)
              exports[i] = new ExportsEntry(cr);
  
          opens_count = cr.readUnsignedShort();
          opens = new OpensEntry[opens_count];
          for (int i = 0; i < opens_count; i++)
              opens[i] = new OpensEntry(cr);
  
          uses_count = cr.readUnsignedShort();
          uses_index = new int[uses_count];
          for (int i = 0; i < uses_count; i++)
              uses_index[i] = cr.readUnsignedShort();
  
          provides_count = cr.readUnsignedShort();
          provides = new ProvidesEntry[provides_count];
          for (int i = 0; i < provides_count; i++)
              provides[i] = new ProvidesEntry(cr);
      }
  
      public Module_attribute(int name_index,
              int module_name,
              int module_flags,
              int module_version_index,
              RequiresEntry[] requires,
              ExportsEntry[] exports,
              OpensEntry[] opens,
              int[] uses,
              ProvidesEntry[] provides) {
          super(name_index, 2);
          this.module_name = module_name;
          this.module_flags = module_flags;
          this.module_version_index = module_version_index;
          requires_count = requires.length;
          this.requires = requires;
          exports_count = exports.length;
          this.exports = exports;
          opens_count = opens.length;
          this.opens = opens;
          uses_count = uses.length;
          this.uses_index = uses;
          provides_count = provides.length;
          this.provides = provides;
      }
  
      public String getUses(int index, ConstantPool constant_pool) throws ConstantPoolException {
          int i = uses_index[index];
          return constant_pool.getClassInfo(i).getName();
      }
  
      @Override
      public <R, D> R accept(Visitor<R, D> visitor, D data) {
          return visitor.visitModule(this, data);
      }
  
      public final int module_name;
      public final int module_flags;
      public final int module_version_index;
      public final int requires_count;
      public final RequiresEntry[] requires;
      public final int exports_count;
      public final ExportsEntry[] exports;
      public final int opens_count;
      public final OpensEntry[] opens;
      public final int uses_count;
      public final int[] uses_index;
      public final int provides_count;
      public final ProvidesEntry[] provides;
  
      public static class RequiresEntry {
          RequiresEntry(ClassReader cr) throws IOException {
              requires_index = cr.readUnsignedShort();
              requires_flags = cr.readUnsignedShort();
              requires_version_index = cr.readUnsignedShort();
          }
  
          public RequiresEntry(int index, int flags, int version_index) {
              this.requires_index = index;
              this.requires_flags = flags;
              this.requires_version_index = version_index;
          }
  
          public String getRequires(ConstantPool constant_pool) throws ConstantPoolException {
              CONSTANT_Module_info info = constant_pool.getModuleInfo(requires_index);
              return info.getName();
          }
  
          public static final int length = 4;
  
          public final int requires_index;
          public final int requires_flags;
          public final int requires_version_index;
      }
  
      public static class ExportsEntry {
          ExportsEntry(ClassReader cr) throws IOException {
              exports_index = cr.readUnsignedShort();
              exports_flags = cr.readUnsignedShort();
              exports_to_count = cr.readUnsignedShort();
              exports_to_index = new int[exports_to_count];
              for (int i = 0; i < exports_to_count; i++)
                  exports_to_index[i] = cr.readUnsignedShort();
          }
  
          public ExportsEntry(int index, int flags, int[] to) {
              this.exports_index = index;
              this.exports_flags = flags;
              this.exports_to_count = to.length;
              this.exports_to_index = to;
          }
  
          public int length() {
              return 4 + 2 * exports_to_index.length;
          }
  
          public final int exports_index;
          public final int exports_flags;
          public final int exports_to_count;
          public final int[] exports_to_index;
      }
  
      public static class OpensEntry {
          OpensEntry(ClassReader cr) throws IOException {
              opens_index = cr.readUnsignedShort();
              opens_flags = cr.readUnsignedShort();
              opens_to_count = cr.readUnsignedShort();
              opens_to_index = new int[opens_to_count];
              for (int i = 0; i < opens_to_count; i++)
                  opens_to_index[i] = cr.readUnsignedShort();
          }
  
          public OpensEntry(int index, int flags, int[] to) {
              this.opens_index = index;
              this.opens_flags = flags;
              this.opens_to_count = to.length;
              this.opens_to_index = to;
          }
  
          public int length() {
              return 4 + 2 * opens_to_index.length;
          }
  
          public final int opens_index;
          public final int opens_flags;
          public final int opens_to_count;
          public final int[] opens_to_index;
      }
  
      public static class ProvidesEntry {
          ProvidesEntry(ClassReader cr) throws IOException {
              provides_index = cr.readUnsignedShort();
              with_count = cr.readUnsignedShort();
              with_index = new int[with_count];
              for (int i = 0; i < with_count; i++)
                  with_index[i] = cr.readUnsignedShort();
          }
  
          public ProvidesEntry(int provides, int[] with) {
              this.provides_index = provides;
              this.with_count = with.length;
              this.with_index = with;
          }
  
          public static final int length = 4;
  
          public final int provides_index;
          public final int with_count;
          public final int[] with_index;
      }
  }
  