1 /*
   2  * Copyright (c) 2014, 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.  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

  47 import java.util.Map;
  48 import java.util.Set;
  49 import java.util.function.Supplier;
  50 
  51 import jdk.internal.misc.JavaLangModuleAccess;
  52 import jdk.internal.misc.SharedSecrets;
  53 
  54 import static jdk.internal.module.ClassFileConstants.*;
  55 
  56 
  57 /**
  58  * Read module information from a {@code module-info} class file.
  59  *
  60  * @implNote The rationale for the hand-coded reader is startup performance
  61  * and fine control over the throwing of InvalidModuleDescriptorException.
  62  */
  63 
  64 public final class ModuleInfo {
  65 
  66     private final int JAVA_MIN_SUPPORTED_VERSION = 53;
  67     private final int JAVA_MAX_SUPPORTED_VERSION = 55;
  68 
  69     private static final JavaLangModuleAccess JLMA
  70         = SharedSecrets.getJavaLangModuleAccess();
  71 
  72     // supplies the set of packages when ModulePackages attribute not present
  73     private final Supplier<Set<String>> packageFinder;
  74 
  75     // indicates if the ModuleHashes attribute should be parsed
  76     private final boolean parseHashes;
  77 
  78     private ModuleInfo(Supplier<Set<String>> pf, boolean ph) {
  79         packageFinder = pf;
  80         parseHashes = ph;
  81     }
  82 
  83     private ModuleInfo(Supplier<Set<String>> pf) {
  84         this(pf, true);
  85     }
  86 
  87     /**

   1 /*
   2  * Copyright (c) 2014, 2018, 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

  47 import java.util.Map;
  48 import java.util.Set;
  49 import java.util.function.Supplier;
  50 
  51 import jdk.internal.misc.JavaLangModuleAccess;
  52 import jdk.internal.misc.SharedSecrets;
  53 
  54 import static jdk.internal.module.ClassFileConstants.*;
  55 
  56 
  57 /**
  58  * Read module information from a {@code module-info} class file.
  59  *
  60  * @implNote The rationale for the hand-coded reader is startup performance
  61  * and fine control over the throwing of InvalidModuleDescriptorException.
  62  */
  63 
  64 public final class ModuleInfo {
  65 
  66     private final int JAVA_MIN_SUPPORTED_VERSION = 53;
  67     private final int JAVA_MAX_SUPPORTED_VERSION = 56;
  68 
  69     private static final JavaLangModuleAccess JLMA
  70         = SharedSecrets.getJavaLangModuleAccess();
  71 
  72     // supplies the set of packages when ModulePackages attribute not present
  73     private final Supplier<Set<String>> packageFinder;
  74 
  75     // indicates if the ModuleHashes attribute should be parsed
  76     private final boolean parseHashes;
  77 
  78     private ModuleInfo(Supplier<Set<String>> pf, boolean ph) {
  79         packageFinder = pf;
  80         parseHashes = ph;
  81     }
  82 
  83     private ModuleInfo(Supplier<Set<String>> pf) {
  84         this(pf, true);
  85     }
  86 
  87     /**