mcimadamore@852: /*
jjg@1357:  * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
mcimadamore@852:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mcimadamore@852:  *
mcimadamore@852:  * This code is free software; you can redistribute it and/or modify it
mcimadamore@852:  * under the terms of the GNU General Public License version 2 only, as
mcimadamore@852:  * published by the Free Software Foundation.  Oracle designates this
mcimadamore@852:  * particular file as subject to the "Classpath" exception as provided
mcimadamore@852:  * by Oracle in the LICENSE file that accompanied this code.
mcimadamore@852:  *
mcimadamore@852:  * This code is distributed in the hope that it will be useful, but WITHOUT
mcimadamore@852:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mcimadamore@852:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mcimadamore@852:  * version 2 for more details (a copy is included in the LICENSE file that
mcimadamore@852:  * accompanied this code).
mcimadamore@852:  *
mcimadamore@852:  * You should have received a copy of the GNU General Public License version
mcimadamore@852:  * 2 along with this work; if not, write to the Free Software Foundation,
mcimadamore@852:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mcimadamore@852:  *
mcimadamore@852:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mcimadamore@852:  * or visit www.oracle.com if you need additional information or have any
mcimadamore@852:  * questions.
mcimadamore@852:  */
mcimadamore@852: 
mcimadamore@852: package com.sun.tools.javac.code;
mcimadamore@852: 
mcimadamore@852: import java.util.HashMap;
mcimadamore@852: import java.util.Map;
mcimadamore@852: 
mcimadamore@852: import com.sun.tools.javac.util.Assert;
mcimadamore@852: import com.sun.tools.javac.util.Context;
jjg@1357: import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
mcimadamore@852: import com.sun.tools.javac.util.ListBuffer;
mcimadamore@852: 
mcimadamore@852: /**
mcimadamore@852:  *
mcimadamore@852:  * <p><b>This is NOT part of any supported API.
mcimadamore@852:  * If you write code that depends on this, you do so at your own risk.
mcimadamore@852:  * This code and its internal interfaces are subject to change or
mcimadamore@852:  * deletion without notice.</b>
mcimadamore@852:  */
mcimadamore@852: public class DeferredLintHandler {
mcimadamore@852:     protected static final Context.Key<DeferredLintHandler> deferredLintHandlerKey =
mcimadamore@852:         new Context.Key<DeferredLintHandler>();
mcimadamore@852: 
mcimadamore@852:     public static DeferredLintHandler instance(Context context) {
mcimadamore@852:         DeferredLintHandler instance = context.get(deferredLintHandlerKey);
mcimadamore@852:         if (instance == null)
mcimadamore@852:             instance = new DeferredLintHandler(context);
mcimadamore@852:         return instance;
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     protected DeferredLintHandler(Context context) {
mcimadamore@852:         context.put(deferredLintHandlerKey, this);
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     private DeferredLintHandler() {}
mcimadamore@852: 
mcimadamore@852:     public interface LintLogger {
mcimadamore@852:         void report();
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     private DiagnosticPosition currentPos;
mcimadamore@852:     private Map<DiagnosticPosition, ListBuffer<LintLogger>> loggersQueue = new HashMap<DiagnosticPosition, ListBuffer<LintLogger>>();
mcimadamore@852: 
mcimadamore@852:     public void report(LintLogger logger) {
mcimadamore@852:         ListBuffer<LintLogger> loggers = loggersQueue.get(currentPos);
mcimadamore@852:         Assert.checkNonNull(loggers);
mcimadamore@852:         loggers.append(logger);
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     public void flush(DiagnosticPosition pos) {
mcimadamore@852:         ListBuffer<LintLogger> loggers = loggersQueue.get(pos);
mcimadamore@852:         if (loggers != null) {
mcimadamore@852:             for (LintLogger lintLogger : loggers) {
mcimadamore@852:                 lintLogger.report();
mcimadamore@852:             }
mcimadamore@852:             loggersQueue.remove(pos);
mcimadamore@852:         }
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     public DeferredLintHandler setPos(DiagnosticPosition currentPos) {
mcimadamore@852:         this.currentPos = currentPos;
mcimadamore@852:         loggersQueue.put(currentPos, ListBuffer.<LintLogger>lb());
mcimadamore@852:         return this;
mcimadamore@852:     }
mcimadamore@852: 
mcimadamore@852:     public static final DeferredLintHandler immediateHandler = new DeferredLintHandler() {
mcimadamore@852:         @Override
mcimadamore@852:         public void report(LintLogger logger) {
mcimadamore@852:             logger.report();
mcimadamore@852:         }
mcimadamore@852:     };
mcimadamore@852: }