subsurface/core/divelog.cpp
Berthold Stoeger d242198c99 divelog: turn owning-pointers into unique_ptr<>s
Since everything is C++ now, we can use unique_ptr<>s. This makes
the code significantly shorter, because we can now use the default
move constructor and assignment operators.

This has a semantic change when std::move()-ing the divelog:
now not the contents of the tables are moved, but the pointers.
That is, the moved-from object now has no more tables and
must not be used anymore. This made it necessary to replace
std::move()s by std::swap()s. In that regard, the old code was
in principle broken: it used moved-from objects, which may work
but usually doesn't.

This commit adds a myriad of .get() function calls where the code
expects a C-style pointer. The plan is to remove virtually all of
them, when we move free-standing functions into the class it acts
on. Or, replace C-style pointers by references where we don't support
NULL.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2024-08-13 19:28:30 +02:00

60 lines
1.5 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "divelog.h"
#include "divelist.h"
#include "divesite.h"
#include "device.h"
#include "errorhelper.h"
#include "filterpreset.h"
#include "trip.h"
struct divelog divelog;
divelog::divelog() :
dives(std::make_unique<dive_table>()),
trips(std::make_unique<trip_table>()),
sites(std::make_unique<dive_site_table>()),
devices(std::make_unique<device_table>()),
filter_presets(std::make_unique<filter_preset_table>()),
autogroup(false)
{
*dives = empty_dive_table;
*trips = empty_trip_table;
}
divelog::~divelog()
{
if (dives)
clear_dive_table(dives.get());
if (trips)
clear_trip_table(trips.get());
}
divelog::divelog(divelog &&) = default;
struct divelog &divelog::operator=(divelog &&) = default;
/* this implements the mechanics of removing the dive from the
* dive log and the trip, but doesn't deal with updating dive trips, etc */
void divelog::delete_single_dive(int idx)
{
if (idx < 0 || idx > dives->nr) {
report_info("Warning: deleting unexisting dive with index %d", idx);
return;
}
struct dive *dive = dives->dives[idx];
remove_dive_from_trip(dive, trips.get());
unregister_dive_from_dive_site(dive);
delete_dive_from_table(dives.get(), idx);
}
void divelog::clear()
{
while (dives->nr > 0)
delete_single_dive(dives->nr - 1);
sites->clear();
if (trips->nr != 0) {
report_info("Warning: trip table not empty in divelog::clear()!");
trips->nr = 0;
}
clear_device_table(devices.get());
filter_presets->clear();
}