package org.codehaus.plexus.languages.java.jpms;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.LinkedHashSet;
  import java.util.List;
  import java.util.Set;
  
  import com.thoughtworks.qdox.JavaProjectBuilder;
  import com.thoughtworks.qdox.model.JavaClass;
  import com.thoughtworks.qdox.model.JavaModule;
  import com.thoughtworks.qdox.model.JavaModuleDescriptor;
  
  /**
   * Extract information from module with QDox
   *
   * @author Robert Scholte
   * @since 1.0.0
   */
  class SourceModuleInfoParser {
  
      public org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor fromSourcePath(Path modulePath)
              throws IOException {
          File moduleDescriptor = modulePath.toFile();
  
          org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.Builder builder;
          if (moduleDescriptor.exists()) {
              JavaModuleDescriptor descriptor = new JavaProjectBuilder()
                      .addSourceFolder(moduleDescriptor.getParentFile())
                      .getDescriptor();
  
              builder = org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.newModule(descriptor.getName());
  
              for (JavaModuleDescriptor.JavaRequires requires : descriptor.getRequires()) {
                  if (requires.isStatic() || requires.isTransitive()) {
                      Set<org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.JavaRequires.JavaModifier>
                              modifiers = new LinkedHashSet<>(2);
                      if (requires.isStatic()) {
                          modifiers.add(
                                  org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.JavaRequires.JavaModifier
                                          .STATIC);
                      }
                      if (requires.isTransitive()) {
                          modifiers.add(
                                  org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.JavaRequires.JavaModifier
                                          .TRANSITIVE);
                      }
                      builder.requires(modifiers, requires.getModule().getName());
                  } else {
                      builder.requires(requires.getModule().getName());
                  }
              }
  
              for (JavaModuleDescriptor.JavaExports exports : descriptor.getExports()) {
                  if (exports.getTargets().isEmpty()) {
                      builder.exports(exports.getSource().getName());
                  } else {
                      Set<String> targets = new LinkedHashSet<>();
                      for (JavaModule module : exports.getTargets()) {
                          targets.add(module.getName());
                      }
                      builder.exports(exports.getSource().getName(), targets);
                  }
              }
  
              for (JavaModuleDescriptor.JavaUses uses : descriptor.getUses()) {
                  builder.uses(uses.getService().getName());
              }
  
              for (JavaModuleDescriptor.JavaProvides provides : descriptor.getProvides()) {
                  List<String> providers = new ArrayList<>(provides.getProviders().size());
                  for (JavaClass provider : provides.getProviders()) {
                      providers.add(provider.getName());
                  }
  
                  builder.provides(provides.getService().getName(), providers);
              }
          } else {
             builder = org.codehaus.plexus.languages.java.jpms.JavaModuleDescriptor.newAutomaticModule(null);
         }
 
         return builder.build();
     }
 }