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/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2003,2004 University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;

import edu.umd.cs.findbugs.ba.RepositoryLookupFailureCallback;
import edu.umd.cs.findbugs.classfile.IClassObserver;

/**
 * Generic interface for bug reporter objects. A BugReporter accumulates all of
 * the information reported by the analysis, which includes bug reports, and
 * also auxiliary information such as analysis errors, missing classes, and
 * class to source file mapping.
 *
 * @author David Hovemeyer
 */
public interface BugReporter extends RepositoryLookupFailureCallback, IClassObserver {

    /**
     * Silent error-reporting verbosity level.
     */
    public static final int SILENT = 0;

    /**
     * Normal error-reporting verbosity level.
     */
    public static final int NORMAL = 1;

    /**
     * Set the error-reporting verbosity level.
     *
     * @param level
     *            the verbosity level
     */
    public void setErrorVerbosity(int level);

    /**
     * Set the priority threshold.
     *
     * @param threshold
     *            bug instances must be at least as important as this priority
     *            to be reported
     */
    public void setPriorityThreshold(int threshold);

    /**
     * Report a bug. The implementation may report the bug immediately, or queue
     * it for later.
     *
     * @param bugInstance
     *            object describing the bug instance
     */
    public void reportBug(@Nonnull BugInstance bugInstance);

    /**
     * Finish reporting bugs. If any bug reports have been queued, calling this
     * method will flush them.
     */
    public void finish();

    /**
     * Report any accumulated error messages.
     */
    public void reportQueuedErrors();

    /**
     * Add an observer.
     *
     * @param observer
     *            the observer
     */
    public void addObserver(BugReporterObserver observer);

    /**
     * Get ProjectStats object used to store statistics about the overall
     * project being analyzed.
     */
    public ProjectStats getProjectStats();

    /**
     * Get the bug collection (if any) associated with this bug reporter
     */
    public @CheckForNull BugCollection getBugCollection();
}