JUCE/modules/juce_core/logging/juce_Logger.cpp

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   JUCE is an open source library subject to commercial or open-source
   licensing.

   The code included in this file is provided under the terms of the ISC license
   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
   To use, copy, modify, and/or distribute this software for any purpose with or
   without fee is hereby granted provided that the above copyright notice and
   this permission notice appear in all copies.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

Logger::Logger() {}

Logger::~Logger()
{
    // You're deleting this logger while it's still being used!
    // Always call Logger::setCurrentLogger (nullptr) before deleting the active logger.
    jassert (currentLogger != this);
}

Logger* Logger::currentLogger = nullptr;

void Logger::setCurrentLogger (Logger* const newLogger) noexcept    { currentLogger = newLogger; }
Logger* Logger::getCurrentLogger()  noexcept                        { return currentLogger; }

void Logger::writeToLog (const String& message)
{
    if (currentLogger != nullptr)
        currentLogger->logMessage (message);
    else
        outputDebugString (message);
}

#if JUCE_LOG_ASSERTIONS || JUCE_DEBUG
void JUCE_API JUCE_CALLTYPE logAssertion (const char* const filename, const int lineNum) noexcept
{
    String m ("JUCE Assertion failure in ");
    m << File::createFileWithoutCheckingPath (filename).getFileName() << ':' << lineNum;

   #if JUCE_LOG_ASSERTIONS
    Logger::writeToLog (m);
   #else
    DBG (m);
   #endif
}
#endif

} // namespace juce