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Register.cc

Go to the documentation of this file.

#include "cl/Register.h"
#include <string.h>


BaseTable *Register::table = 0;

Void PrintClassID(ostream &s, ClassID &id)
{
    char *t = (char*) &id;
    s << '<' << t[0] << t[1] << t[2] << t[3] << '>';
}


// --- Register methods ----------------------------------


Void Register::RegisterClass(
        ClassID         baseID,       
        ClassID         id,       
        ObjectCreator   creator,       
        const           Char *name,      
        const           Char *description      
    )
{
    Int         i = 0;
    ClassTable  *ctable;

    if (!table)
        table = new BaseTable;
    else
        while (i < table->NumItems())
        {
            if ((*table)[i].baseID == baseID)
                break;
            else
                i++;
        }
    
    if (i == table->NumItems())
    {
        table->Add(1);
        table->Last().baseID = baseID;
    }

    ctable = &((*table)[i].table);
    ctable->Add(1);
    ctable->Last().id = id;
    ctable->Last().creator = creator;
    ctable->Last().name = name;
    ctable->Last().description = description;
}

ClassTable *Register::FindClassTable(ClassID baseID)
{
    Int         i = 0;

    if (!table)
        table = new BaseTable;
    else
        while (i < table->NumItems())
        {
            if ((*table)[i].baseID == baseID)
                break;
            else
                i++;
        }   

    if (i < table->NumItems())
        return(&((*table)[i].table));
    else
        return(0);
}

Void Register::ListObjects(ClassID baseID)
{
    Int     i;
    ClassTable  *ctable = FindClassTable(baseID);

    if (!ctable)
        return;

    for (i = 0; i < ctable->NumItems(); i++)
    {
        cout << "  ";
        PrintClassID(cout, (*ctable)[i].id);
        cout << "  " << (*ctable)[i].name;
        if ((*ctable)[i].description)
            cout << ", " << (*ctable)[i].description;
        cout << endl;
    }
}

Void Register::ListObjects()
{
    Int         i, j;
    ClassTable  *ctable;
    
    if (!table) return;
    
    for (j = 0; j < table->NumItems(); j++)
    {
        PrintClassID(cout, (*table)[j].baseID);
        cout << endl;
        ctable = &((*table)[j].table);
        for (i = 0; i < ctable->NumItems(); i++)
        {
            cout << "  ";
            PrintClassID(cout, (*ctable)[i].id);
            cout << "  " << (*ctable)[i].name;
            if ((*ctable)[i].description)
                cout << ", " << (*ctable)[i].description;
            cout << endl;
        }
    }
}

Void *Register::MakeObject(ClassID id)
{
    return(MakeObject('none', id));
}

Void *Register::MakeObject(ClassID baseID, ClassID id)
{
    ClassTable  *ctable;
    Int         i = 0;

    if (!(ctable = FindClassTable(baseID)))
        return(0);

    while (i < ctable->NumItems())
    {
        if ((*ctable)[i].id == id)
            break;
        else
            i++;
    }
    
    if (i == ctable->NumItems())
    {
        Assert(false, "(Register::MakeObject) Can't find class ID");
        return(0);
    }
    return((*(*ctable)[i].creator)());
}

Void *Register::MakeObject(const Char *name)
{
    return(MakeObject('none', name));   
}

Void *Register::MakeObject(ClassID baseID, const Char *name)
{
    ClassTable  *ctable;
    Int         i = 0;
    
    if (!(ctable = FindClassTable(baseID)))
        return(0);
    
    while (i < ctable->NumItems())
    {
        if (strcmp((*ctable)[i].name, name) == 0)
            break;
        else
            i++;
    }
    
    if (i == ctable->NumItems())
    {
        Assert(false, "(Register::MakeObject) Can't find name");
        return(0);
    }
    return((*(*ctable)[i].creator)());
}

#include "cl/CLConfig.h"

#ifdef CL_TMPL_INST
template class Array<RegistryEntry>;
template class Array<BaseEntry>;
#endif

#ifdef CL_SGI_INST
#pragma instantiate Array<RegistryEntry>
#pragma instantiate Array<BaseEntry>
#endif

#ifdef TEST
Int main(Int argc, Char *argv[])
{

    return(0);
}
#endif

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