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Add a unique id to every dive

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This id is just held in memory. It's not supposed to be used for anything
but having a unique handle that represents a dive. Whenever you need to
remember a dive across an operation that might change the dive_table, this
is what you should hold on to, not a dive number, a dive pointer, or
anything like that.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2014-01-07 09:30:01 +08:00
parent ca391035f3
commit 65e9fecd80
3 changed files with 43 additions and 1 deletions
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24
qthelper.cpp
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@ -217,3 +217,27 @@ QList< int > getDivesInTrip ( dive_trip_t* trip )
}
return ret;
}
// we need this to be uniq, but also make sure
// it doesn't change during the life time of a Subsurface session
// oh, and it has no meaning whatsoever - that's why we have the
// silly initial number and increment by 3 :-)
int getUniqID(struct dive *d)
{
static QSet<int> ids;
static int maxId = 83529;
int id = d->id;
if (id) {
if (!ids.contains(id)) {
qDebug() << "WTF - only I am allowed to create IDs";
ids.insert(id);
}
return id;
}
maxId += 3;
id = maxId;
Q_ASSERT(!ids.contains(id));
ids.insert(id);
return id;
}