// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.devtools.build.lib.events;

/**
 * Passes through any events, and converts any warnings to errors.
 */
public final class WarningsAsErrorsEventHandler extends DelegatingEventHandler {

  boolean warningsEncountered = false;

  public WarningsAsErrorsEventHandler(EventHandler eventHandler) {
    super(eventHandler);
  }

  @Override
  public synchronized void handle(Event e) {
    if (e.getKind() == EventKind.WARNING) {
      warningsEncountered = true;
      super.handle(new Event(EventKind.ERROR, e.getLocation(), e.getMessage()));
    } else {
      super.handle(e);
    }
  }

  public boolean warningsEncountered() {
    return warningsEncountered;
  }
}