jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/code/DeferredLintHandler.java@4baab658f357

6639645: Modeling type implementing missing interfaces
Reviewed-by: darcy, mcimadamore

     1 /*

     2  * Copyright (c) 2011, 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

    23  * questions.

    24  */

    26 package com.sun.tools.javac.code;

    28 import java.util.HashMap;

    29 import java.util.Map;

    31 import com.sun.tools.javac.util.Assert;

    32 import com.sun.tools.javac.util.Context;

    33 import com.sun.tools.javac.util.ListBuffer;

    34 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;

    36 /**

    37  *

    38  * <p><b>This is NOT part of any supported API.

    39  * If you write code that depends on this, you do so at your own risk.

    40  * This code and its internal interfaces are subject to change or

    41  * deletion without notice.</b>

    42  */

    43 public class DeferredLintHandler {

    44     protected static final Context.Key<DeferredLintHandler> deferredLintHandlerKey =

    45         new Context.Key<DeferredLintHandler>();

    47     public static DeferredLintHandler instance(Context context) {

    48         DeferredLintHandler instance = context.get(deferredLintHandlerKey);

    49         if (instance == null)

    50             instance = new DeferredLintHandler(context);

    51         return instance;

    52     }

    54     protected DeferredLintHandler(Context context) {

    55         context.put(deferredLintHandlerKey, this);

    56     }

    58     private DeferredLintHandler() {}

    60     public interface LintLogger {

    61         void report();

    62     }

    64     private DiagnosticPosition currentPos;

    65     private Map<DiagnosticPosition, ListBuffer<LintLogger>> loggersQueue = new HashMap<DiagnosticPosition, ListBuffer<LintLogger>>();

    67     public void report(LintLogger logger) {

    68         ListBuffer<LintLogger> loggers = loggersQueue.get(currentPos);

    69         Assert.checkNonNull(loggers);

    70         loggers.append(logger);

    71     }

    73     public void flush(DiagnosticPosition pos) {

    74         ListBuffer<LintLogger> loggers = loggersQueue.get(pos);

    75         if (loggers != null) {

    76             for (LintLogger lintLogger : loggers) {

    77                 lintLogger.report();

    78             }

    79             loggersQueue.remove(pos);

    80         }

    81     }

    83     public DeferredLintHandler setPos(DiagnosticPosition currentPos) {

    84         this.currentPos = currentPos;

    85         loggersQueue.put(currentPos, ListBuffer.<LintLogger>lb());

    86         return this;

    87     }

    89     public static final DeferredLintHandler immediateHandler = new DeferredLintHandler() {

    90         @Override

    91         public void report(LintLogger logger) {

    92             logger.report();

    93         }

    94     };

    95 }

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