content: /*
   * Copyright (c) 2005, 2019, 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.javac.api;
  
  import java.util.Collection;
  import java.util.LinkedHashSet;
  import java.util.Locale;
  import java.util.Objects;
  import java.util.ServiceLoader;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import jdkx.annotation.processing.Processor;
  import jdkx.lang.model.element.Element;
  import jdkx.lang.model.type.TypeMirror;
  import jdkx.lang.model.util.Elements;
  import jdkx.lang.model.util.Types;
  import jdkx.tools.JavaFileObject;
  
  import openjdk.source.tree.CompilationUnitTree;
  import openjdk.source.tree.Tree;
  import openjdk.source.util.JavacTask;
  import openjdk.source.util.ParameterNameProvider;
  import openjdk.source.util.Plugin;
  import openjdk.source.util.TaskListener;
  import openjdk.tools.doclint.DocLint;
  import openjdk.tools.javac.code.MissingInfoHandler;
  import openjdk.tools.javac.main.JavaCompiler;
  import openjdk.tools.javac.model.JavacElements;
  import openjdk.tools.javac.model.JavacTypes;
  import openjdk.tools.javac.platform.PlatformDescription;
  import openjdk.tools.javac.platform.PlatformDescription.PluginInfo;
  import openjdk.tools.javac.processing.JavacProcessingEnvironment;
  import openjdk.tools.javac.resources.CompilerProperties.Errors;
  import openjdk.tools.javac.resources.CompilerProperties.Warnings;
  import openjdk.tools.javac.tree.JCTree;
  import openjdk.tools.javac.util.Context;
  import openjdk.tools.javac.util.DefinedBy;
  import openjdk.tools.javac.util.DefinedBy.Api;
  import openjdk.tools.javac.util.List;
  import openjdk.tools.javac.util.Log;
  //import openjdk.tools.javac.util.ModuleHelper;
  import openjdk.tools.javac.util.Options;
  import openjdk.tools.javac.util.PropagatedException;
  
  /**
   * Provides basic functionality for implementations of JavacTask.
   *
   * <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></p>
   */
  public class BasicJavacTask extends JavacTask {
      protected Context context;
      protected Options options;
      private TaskListener taskListener;
  
      public static JavacTask instance(Context context) {
          JavacTask instance = context.get(JavacTask.class);
          if (instance == null)
              instance = new BasicJavacTask(context, true);
          return instance;
      }
  
      public BasicJavacTask(Context c, boolean register) {
          context = c;
          options = Options.instance(c);
          if (register)
              context.put(JavacTask.class, this);
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public Iterable<? extends CompilationUnitTree> parse() {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public Iterable<? extends Element> analyze() {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public Iterable<? extends JavaFileObject> generate() {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public void setTaskListener(TaskListener tl) {
          MultiTaskListener mtl = MultiTaskListener.instance(context);
          if (taskListener != null)
              mtl.remove(taskListener);
          if (tl != null)
              mtl.add(tl);
          taskListener = tl;
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public void addTaskListener(TaskListener taskListener) {
          MultiTaskListener mtl = MultiTaskListener.instance(context);
          mtl.add(taskListener);
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public void removeTaskListener(TaskListener taskListener) {
          MultiTaskListener mtl = MultiTaskListener.instance(context);
          mtl.remove(taskListener);
      }
  
      @Override
      public void setParameterNameProvider(ParameterNameProvider handler) {
          MissingInfoHandler.instance(context).setDelegate(handler);
      }
  
      public Collection<TaskListener> getTaskListeners() {
          MultiTaskListener mtl = MultiTaskListener.instance(context);
          return mtl.getTaskListeners();
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public TypeMirror getTypeMirror(Iterable<? extends Tree> path) {
          // TODO: Should complete attribution if necessary
          Tree last = null;
          for (Tree node : path) {
              last = Objects.requireNonNull(node);
          }
          if (last == null) {
              throw new IllegalArgumentException("empty path");
          }
          return ((JCTree) last).type;
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public Elements getElements() {
          if (context == null)
              throw new IllegalStateException();
          return JavacElements.instance(context);
      }
  
      @Override @DefinedBy(Api.COMPILER_TREE)
      public Types getTypes() {
          if (context == null)
              throw new IllegalStateException();
          return JavacTypes.instance(context);
      }
  
      @Override @DefinedBy(Api.COMPILER)
      public void addModules(Iterable<String> moduleNames) {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER)
      public void setProcessors(Iterable<? extends Processor> processors) {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER)
      public void setLocale(Locale locale) {
          throw new IllegalStateException();
      }
  
      @Override @DefinedBy(Api.COMPILER)
      public Boolean call() {
          throw new IllegalStateException();
      }
  
      /**
       * For internal use only.
       * This method will be removed without warning.
       * @return the context
       */
      public Context getContext() {
          return context;
      }
  
      public void initPlugins(Set<List<String>> pluginOpts) {
          PlatformDescription platformProvider = context.get(PlatformDescription.class);
  
          if (platformProvider != null) {
              for (PluginInfo<Plugin> pluginDesc : platformProvider.getPlugins()) {
                  java.util.List<String> options =
                          pluginDesc.getOptions().entrySet().stream()
                                  .map(e -> e.getKey() + "=" + e.getValue())
                                  .collect(Collectors.toList());
                  try {
                      initPlugin(pluginDesc.getPlugin(), options.toArray(new String[options.size()]));
                  } catch (RuntimeException ex) {
                      throw new PropagatedException(ex);
                  }
              }
          }
  
          Set<List<String>> pluginsToCall = new LinkedHashSet<>(pluginOpts);
          JavacProcessingEnvironment pEnv = JavacProcessingEnvironment.instance(context);
          ServiceLoader<Plugin> sl = pEnv.getServiceLoader(Plugin.class);
          Set<Plugin> autoStart = new LinkedHashSet<>();
          for (Plugin plugin : sl) {
              if (plugin.autoStart()) {
                  autoStart.add(plugin);
              }
              for (List<String> p : pluginsToCall) {
                  if (plugin.getName().equals(p.head)) {
                      pluginsToCall.remove(p);
                      autoStart.remove(plugin);
                      try {
                          initPlugin(plugin, p.tail.toArray(new String[p.tail.size()]));
                      } catch (RuntimeException ex) {
                          throw new PropagatedException(ex);
                      }
                      break;
                  }
              }
          }
          for (List<String> p : pluginsToCall) {
              Log.instance(context).error(Errors.PluginNotFound(p.head));
          }
          for (Plugin plugin : autoStart) {
              try {
                  initPlugin(plugin, new String[0]);
              } catch (RuntimeException ex) {
                  throw new PropagatedException(ex);
              }
  
          }
      }
  
      private void initPlugin(Plugin p, String... args) {
  //        Module m = p.getClass().getModule();
  //        if (m.isNamed() && options.isSet("accessInternalAPI")) {
  //            ModuleHelper.addExports(getClass().getModule(), m);
  //        }
          p.init(this, args);
      }
  
      public void initDocLint(List<String> docLintOpts) {
          if (docLintOpts.isEmpty())
              return;
          try {
              DocLint.newDocLint().init(this, docLintOpts.toArray(new String[docLintOpts.size()]));
              //new DocLint().init(this, docLintOpts.toArray(new String[docLintOpts.size()]));
              JavaCompiler.instance(context).keepComments = true;
          } catch (IllegalStateException e) {
              Log.instance(context).warning(Warnings.DoclintNotAvailable);
          }
      }
  }
  