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>
There were only two of them, from the time C-code had to access
the divelog: clear_divelog() and delete_single_dive().
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This is a long commit, because it introduces a new abstraction:
a general std::vector<> of std::unique_ptrs<>.
Moreover, it replaces a number of pointers by C++ references,
when the callee does not suppoert null objects.
This simplifies memory management and makes ownership more
explicit. It is a proof-of-concept and a test-bed for
the other core data structrures.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
46cf2fc086 fixed a bug where clearing of a divelog, such as the one
used for import, would erase dives in the global(!) divelog.
However, the new code used the function clear_dive_table(), which
only cleared the table without unregistering the dives. In particular,
the dives were not removed from the trips, which means that the trips
were not free()d.
This reinstates the old code, but now passes a divelog paremeter
to delete_single_dive() instead of accessing the global divelog.
Moreover, delete dives from the back to avoid unnecessary
copying.
An alternative and definitely simpler solution might be to just
add a "clear_trip_table()" after "clear_dive_table()".
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The parser API was very annoying, as a number of tables
to-be-filled were passed in as pointers. The goal of this
commit is to collect all these tables in a single struct.
This should make it (more or less) clear what is actually
written into the divelog files.
Moreover, it should now be rather easy to search for
instances, where the global logfile is accessed (and it
turns out that there are many!).
The divelog struct does not contain the tables as substructs,
but only collects pointers. The idea is that the "divelog.h"
file can be included without all the other files describing
the numerous tables.
To make it easier to use from C++ parts of the code, the
struct implements a constructor and a destructor. Sadly,
we can't use smart pointers, since the pointers are accessed
from C code. Therfore the constructor and destructor are
quite complex.
The whole commit is large, but was mostly an automatic
conversion.
One oddity of note: the divelog structure also contains
the "autogroup" flag, since that is saved in the divelog.
This actually fixes a bug: Before, when importing dives
from a different log, the autogroup flag was overwritten.
This was probably not intended and does not happen anymore.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
