/*
 * Copyright (c) 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.
 *
 * 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.oracle.graal.debug;

import java.io.*;
import java.util.*;

public interface DebugConfig {

    /**
     * Determines if logging is enabled in the {@linkplain Debug#currentScope() current debug scope}
     * .
     * 
     * @see Debug#log(String, Object...)
     */
    boolean isLogEnabled();

    /**
     * Determines if metering is enabled in the {@linkplain Debug#currentScope() current debug
     * scope}.
     * 
     * @see Debug#metric(String)
     */
    boolean isMeterEnabled();

    /**
     * Determines if dumping is enabled in the {@linkplain Debug#currentScope() current debug scope}
     * .
     * 
     * @see Debug#dump(Object, String, Object...)
     */
    boolean isDumpEnabled();

    /**
     * Adds an object the context used by this configuration to do filtering.
     */
    void addToContext(Object o);

    /**
     * Removes an object the context used by this configuration to do filtering.
     * 
     * This should only removes extra context added by {@link #addToContext(Object)}.
     */
    void removeFromContext(Object o);

    /**
     * @see Debug#timer(String)
     */
    boolean isTimeEnabled();

    /**
     * Handles notification of an exception occurring within a debug scope.
     * 
     * @return the exception object that is to be propagated to parent scope. A value of
     *         {@code null} indicates that {@code e} is to be propagated.
     */
    RuntimeException interceptException(Throwable e);

    /**
     * Gets the modifiable collection dump handlers registered with this configuration.
     */
    Collection<DebugDumpHandler> dumpHandlers();

    PrintStream output();
}