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src/java.base/share/classes/jdk/internal/module/ModuleInfo.java

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   1 /*
   2  * Copyright (c) 2014, 2019, 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


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


   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


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


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