CObject.cpp

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/* +---------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)               |
   |                          http://www.mrpt.org/                             |
   |                                                                           |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file        |
   | See: http://www.mrpt.org/Authors - All rights reserved.                   |
   | Released under BSD License. See details in http://www.mrpt.org/License    |
   +---------------------------------------------------------------------------+ */

#include "base-precomp.h"  // Precompiled headers

#include <mrpt/utils/CObject.h>
#include <mrpt/utils/CMemoryStream.h>
#include <mrpt/system/os.h>

#include "internal_class_registry.h"

using namespace mrpt;
using namespace mrpt::utils;
using namespace mrpt::system;

#include <cstdio>

/*---------------------------------------------------------------
                                        TRuntimeClassId::derivedFrom
 ---------------------------------------------------------------*/
bool TRuntimeClassId::derivedFrom(const TRuntimeClassId* pBaseClass) const
{
        ASSERT_(this != NULL)
        ASSERT_(pBaseClass != NULL)

        // The same class??
        if (pBaseClass==this)
                return true;

        // Automatically register all pending classes, just in case:
        registerAllPendingClasses();

        // Check heritage:
        const TRuntimeClassId* pClassThis = this;
        while (pClassThis != NULL)
        {
                if (pClassThis == pBaseClass)   return true;

                if (pClassThis->getBaseClass)   pClassThis = (*pClassThis->getBaseClass)();
                else    pClassThis = NULL; // The root class
        }

        // Parent class not found
        return false;
}

/*---------------------------------------------------------------
                                        TRuntimeClassId::derivedFrom
 ---------------------------------------------------------------*/
bool TRuntimeClassId::derivedFrom(const char* pBaseClass_name) const
{
        ASSERT_(this != NULL)

        // Automatically register all pending classes, just in case:
        registerAllPendingClasses();

        const TRuntimeClassId* pBaseClass = findRegisteredClass(pBaseClass_name);
        ASSERTMSG_(pBaseClass != NULL, format("Class %s not registered??",pBaseClass_name) )

        // The same class??
        if (pBaseClass==this)
                return true;

        // Check heritage:
        const TRuntimeClassId* pClassThis = this;
        while (pClassThis != NULL)
        {
                if (pClassThis == pBaseClass)   return true;

                if (pClassThis->getBaseClass)   pClassThis = (*pClassThis->getBaseClass)();
                else    pClassThis = NULL; // The root class
        }

        // Parent class not found
        return false;
}


/*---------------------------------------------------------------
                                        TRuntimeClassId::createObject
 ---------------------------------------------------------------*/
CObject* TRuntimeClassId::createObject() const
{
        if (! ptrCreateObject )
        {
                perror("[TRuntimeClassId::createObject] Trying to create an object with not dynamic constructor\n");
                return NULL;
        }

        try
        {
                CObject* ret = (*ptrCreateObject)();
                return ret;
        }
        catch (std::bad_alloc &)
        {
                throw;
        }
}


/* -----------------------------------------------------------------------
                For class CObject, special methods must be defined
                 since it has no base class. These methods are defined
                 automatically for derived classes.
   ----------------------------------------------------------------------- */
TRuntimeClassId* CObject::_GetBaseClass()
{
        return NULL;
}

const struct TRuntimeClassId CObject::classCObject =
{
        "CObject",
        NULL,
        NULL
};