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/*
* HT Editor
* atom.cc
*
* Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstring>
#include "atom.h"
#include "data.h"
#include "snprintf.h"
static AVLTree atoms(true);
class Atom: public Object {
public:
uint id;
void *value;
Atom(uint i, void *v)
: id(i),
value(v)
{
}
int compareTo(const Object *obj) const
{
Atom *a = (Atom*)obj;
return id - a->id;
}
int toString(char *buf, int buflen) const
{
return ht_snprintf(buf, buflen, "[%08x, %p]\n", id, value);
}
};
void *getAtomValue(uint id)
{
if (id != invalid_atom_id) {
Atom a(id, NULL);
Atom *f = (Atom*)atoms.get(atoms.find(&a));
if (f) return f->value;
}
return NULL;
}
uint getAtomId(void *value)
{
if (value) {
foreach(Atom, a, atoms,
if (a->value == value) return a->id;
);
}
return invalid_atom_id;
}
#include "htdebug.h"
bool registerAtom(uint id, void *value)
{
Atom a(id, NULL);
if (atoms.contains(&a)) {
return false;
}
assert(value);
atoms.insert(new Atom(id, value));
return true;
}
bool unregisterAtom(uint id)
{
Atom a(id, NULL);
atoms.delObj(&a);
return true;
}
/*
* Module Init/Done
*/
bool init_atom()
{
return true;
}
void done_atom()
{
atoms.delAll();
}
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