Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2005, 2012, 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 com.sun.tools.javac.processing;

 import com.sun.tools.javac.model.JavacElements;

 import com.sun.tools.javac.util.*;

 import com.sun.tools.javac.tree.JCTree;

 import com.sun.tools.javac.tree.JCTree.*;

 import javax.lang.model.element.*;

 import javax.tools.JavaFileObject;

 import javax.tools.Diagnostic;

 import javax.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()

     public void printMessage(Diagnostic.Kind kind, CharSequence msg) {

         printMessage(kind, msg, null, null, null);

     }

     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

      */

     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 annotaiton value

      * @param v    the annotation value to use as a position hint

      */

     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++;

                 boolean prev = log.multipleErrors;

                 log.multipleErrors = true;

                 try {

                     log.error(pos, "proc.messager", msg.toString());

                 } finally {

                     log.multipleErrors = prev;

                 }

                 break;

             case WARNING:

                 warningCount++;

                 log.warning(pos, "proc.messager", msg.toString());

                 break;

             case MANDATORY_WARNING:

                 warningCount++;

                 log.mandatoryWarning(pos, "proc.messager", msg.toString());

                 break;

             default:

                 log.note(pos, "proc.messager", 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(Context context) {

         log = Log.instance(context);

         errorCount = 0;

     }

     public String toString() {

         return "javac Messager";

     }

 }