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.processing;
  
  import openjdk.tools.javac.model.JavacElements;
  import openjdk.tools.javac.resources.CompilerProperties.Errors;
  import openjdk.tools.javac.resources.CompilerProperties.Notes;
  import openjdk.tools.javac.resources.CompilerProperties.Warnings;
  import openjdk.tools.javac.util.*;
  import openjdk.tools.javac.util.DefinedBy.Api;
  import openjdk.tools.javac.util.JCDiagnostic.DiagnosticFlag;
  import openjdk.tools.javac.tree.JCTree;
  import openjdk.tools.javac.tree.JCTree.*;
  import java.util.Set;
  import jdkx.lang.model.element.*;
  import jdkx.tools.JavaFileObject;
  import jdkx.tools.Diagnostic;
  import jdkx.annotation.processing.*;
  
  /**
   * An implementation of the Messager built on top of log.
   *
   * <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 JavacMessager implements Messager {
      Log log;
      JavacProcessingEnvironment processingEnv;
      int errorCount = 0;
      int warningCount = 0;
  
      JavacMessager(Context context, JavacProcessingEnvironment processingEnv) {
          log = Log.instance(context);
          this.processingEnv = processingEnv;
      }
  
      // processingEnv.getElementUtils()
  
      @DefinedBy(Api.ANNOTATION_PROCESSING)
      public void printMessage(Diagnostic.Kind kind, CharSequence msg) {
          printMessage(kind, msg, null, null, null);
      }
  
      @DefinedBy(Api.ANNOTATION_PROCESSING)
      public void printMessage(Diagnostic.Kind kind, CharSequence msg,
                        Element e) {
          printMessage(kind, msg, e, null, null);
      }
  
      /**
       * Prints a message of the specified kind at the location of the
       * annotation mirror of the annotated element.
       *
       * @param kind the kind of message
       * @param msg  the message, or an empty string if none
       * @param e    the annotated element
       * @param a    the annotation to use as a position hint
       */
      @DefinedBy(Api.ANNOTATION_PROCESSING)
      public void printMessage(Diagnostic.Kind kind, CharSequence msg,
                        Element e, AnnotationMirror a) {
          printMessage(kind, msg, e, a, null);
      }
  
      /**
       * Prints a message of the specified kind at the location of the
       * annotation value inside the annotation mirror of the annotated
       * element.
       *
       * @param kind the kind of message
       * @param msg  the message, or an empty string if none
       * @param e    the annotated element
       * @param a    the annotation containing the annotation value
       * @param v    the annotation value to use as a position hint
       */
      @DefinedBy(Api.ANNOTATION_PROCESSING)
      public void printMessage(Diagnostic.Kind kind, CharSequence msg,
                        Element e, AnnotationMirror a, AnnotationValue v) {
          JavaFileObject oldSource = null;
          JavaFileObject newSource = null;
          JCDiagnostic.DiagnosticPosition pos = null;
          JavacElements elemUtils = processingEnv.getElementUtils();
          Pair<JCTree, JCCompilationUnit> treeTop = elemUtils.getTreeAndTopLevel(e, a, v);
          if (treeTop != null) {
              newSource = treeTop.snd.sourcefile;
              if (newSource != null) {
                  // save the old version and reinstate it later
                  oldSource = log.useSource(newSource);
                  pos = treeTop.fst.pos();
              }
          }
          try {
              switch (kind) {
              case ERROR:
                  errorCount++;
                  log.error(DiagnosticFlag.API, pos, Errors.ProcMessager(msg.toString()));
                  break;
  
              case WARNING:
                  warningCount++;
                  log.warning(pos, Warnings.ProcMessager(msg.toString()));
                  break;
  
              case MANDATORY_WARNING:
                  warningCount++;
                  log.mandatoryWarning(pos, Warnings.ProcMessager(msg.toString()));
                  break;
  
              default:
                  log.note(pos, Notes.ProcMessager(msg.toString()));
                  break;
              }
          } finally {
              // reinstate the saved version, only if it was saved earlier
              if (newSource != null)
                  log.useSource(oldSource);
          }
      }
  
      /**
       * Prints an error message.
       * Equivalent to {@code printError(null, msg)}.
       * @param msg  the message, or an empty string if none
       */
      public void printError(String msg) {
          printMessage(Diagnostic.Kind.ERROR, msg);
      }
  
      /**
       * Prints a warning message.
       * Equivalent to {@code printWarning(null, msg)}.
       * @param msg  the message, or an empty string if none
       */
      public void printWarning(String msg) {
          printMessage(Diagnostic.Kind.WARNING, msg);
      }
  
      /**
       * Prints a notice.
       * @param msg  the message, or an empty string if none
       */
      public void printNotice(String msg) {
          printMessage(Diagnostic.Kind.NOTE, msg);
      }
  
      public boolean errorRaised() {
          return errorCount > 0;
      }
  
      public int errorCount() {
          return errorCount;
      }
  
      public int warningCount() {
          return warningCount;
      }
  
      public void newRound() {
          errorCount = 0;
      }
  
      public String toString() {
          return "javac Messager";
      }
  }
  