Warnings.cpp

/*

Copyright (c) 2005-2012, University of Oxford.
All rights reserved.

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This file is part of Chaste.

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modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 * Neither the name of the University of Oxford nor the names of its
   contributors may be used to endorse or promote products derived from this
   software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*/

#include <cstdlib>
#include <iostream>
#include <algorithm>

#include "Warnings.hpp"
#include "Exception.hpp"
#include "LogFile.hpp"

Warnings* Warnings::mpInstance = NULL;

Warnings::Warnings()
{
}

void Warnings::NoisyDestroy(void)
{
    if (mpInstance)
    {
        for (WarningsContainerType::iterator it = mpInstance->mWarningMessages.begin();
             it != mpInstance->mWarningMessages.end();
             ++it)
        {
            /*
             * Look at my warnings please.
             * First in pair is the context.
             * Second in pair is that actual warning.
             */
            std::cout << it->first << it->second << std::endl;
        }
        delete mpInstance;
        mpInstance = NULL;
    }
}

void Warnings::QuietDestroy(void)
{
    if (mpInstance)
    {
        delete mpInstance;
        mpInstance = NULL;
    }
}

Warnings* Warnings::Instance()
{
    if (mpInstance == NULL)
    {
        mpInstance = new Warnings();
        std::atexit(NoisyDestroy);
    }
    return mpInstance;
}

void Warnings::AddWarning(const std::string& rMessage, const std::string& rFilename, unsigned lineNumber, bool onlyOnce)
{

    std::stringstream line_number_stream;
    line_number_stream << lineNumber;
    std::string context("Chaste warning: in file " + rFilename + " at line "  + line_number_stream.str()  + ": ");
    std::pair<std::string, std::string> item(context, rMessage);

    if (onlyOnce)
    {
        WarningsContainerType::iterator it = find(mWarningMessages.begin(), mWarningMessages.end(), item);
        if (it != mWarningMessages.end())
        {
            return;
        }
    }

    mWarningMessages.push_back(item);
    LOG(1, context + rMessage);
}

unsigned Warnings::GetNumWarnings()
{
    return mWarningMessages.size();
}

std::string Warnings::GetNextWarningMessage()
{
    if (mWarningMessages.empty())
    {
        EXCEPTION("There are no warnings");
    }
    std::string message = mWarningMessages.front().second; // Second in pair is the actual warning
    mWarningMessages.pop_front();

    return message;
}