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// Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
// Copyright (C) 2015-2020 Cherokees of Idaho.
//
// This file is part of GNU uCommon C++.
//
// GNU uCommon C++ is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU uCommon C++ 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.
#include <ucommon-config.h>
#include <ucommon/export.h>
#include <ucommon/protocols.h>
#include <ucommon/object.h>
#include <stdlib.h>
#include <string.h>
namespace ucommon {
CountedObject::CountedObject()
{
count = 0;
}
CountedObject::CountedObject(const ObjectProtocol &source)
{
count = 0;
}
void CountedObject::dealloc(void)
{
delete this;
}
void CountedObject::retain(void)
{
++count;
}
void CountedObject::release(void)
{
if(count > 1) {
--count;
return;
}
dealloc();
}
AutoObject::AutoObject(ObjectProtocol *o)
{
if(o)
o->retain();
object = o;
}
AutoObject::AutoObject()
{
object = 0;
}
void AutoObject::release(void)
{
if(object)
object->release();
object = 0;
}
AutoObject::~AutoObject()
{
release();
}
AutoObject::AutoObject(const AutoObject &from)
{
object = from.object;
if(object)
object->retain();
}
bool AutoObject::operator!() const
{
return (object == 0);
}
AutoObject::operator bool() const
{
return (object != 0);
}
void AutoObject::set(ObjectProtocol *o)
{
if(object == o)
return;
if(o)
o->retain();
if(object)
object->release();
object = o;
}
SparseObjects::SparseObjects(unsigned m)
{
assert(m > 0);
max = m;
vector = new ObjectProtocol *[m];
memset(vector, 0, sizeof(ObjectProtocol *) * m);
}
SparseObjects::~SparseObjects()
{
purge();
}
void SparseObjects::purge(void)
{
if(!vector)
return;
for(unsigned pos = 0; pos < max; ++ pos) {
if(vector[pos])
vector[pos]->release();
}
delete[] vector;
vector = NULL;
}
unsigned SparseObjects::count(void)
{
unsigned c = 0;
for(unsigned pos = 0; pos < max; ++pos) {
if(vector[pos])
++c;
}
return c;
}
ObjectProtocol *SparseObjects::invalid(void) const
{
return NULL;
}
ObjectProtocol *SparseObjects::get(unsigned pos)
{
ObjectProtocol *obj;
if(pos >= max)
return invalid();
if(!vector[pos]) {
obj = create();
if(!obj)
return invalid();
obj->retain();
vector[pos] = obj;
}
return vector[pos];
}
} // namespace ucommon
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