Commit graph

86 commits

Author SHA1 Message Date
Berthold Stoeger
b3e5e5eef4 Cleanup: remove bogus assignment in startFilterDiveSites()
In MultiFilterSortModel::startFilterDiveSites(), the setting of the
dive sites to be filtered is done later in the code. Therefore,
remove the assignment in the first line of the function. Under
some circumstances, this would prevent a needed map reload!

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-09-21 16:07:24 -07:00
Berthold Stoeger
093adf1ea8 Map: highlight correct dive sites in dive site mode
Since changing the highlighting to use the selected dive, dive
sites with no dive were never highlighted in dive site mode.
Obviously, because there was no dive to be selected.

Therefore special-case all dive-site selection code to recognize
when we are in dive site mode.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-09-06 11:48:47 -07:00
Berthold Stoeger
fc706a0d72 Filter: reload map on myInvalidate
Since selection change doesn't to a full map reload, we have to
reload the map on filter changes, since the shown dive sites change.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-09-06 11:48:47 -07:00
Berthold Stoeger
cbcddaa396 Dive list: cache shown flag in model (quick-fix for undo-crash)
We have a very fundamental problem with data-duplication in
core and qt-models. In a particular case, this led to an easily
reproducible crash:
1) An undo command moved the last dive of a trip to another.
2) When an undo-command removed the last dive of
   a trip to a different trip, the dive was removed from the
   trip in the core. Then, the model was updated.
3) That lead at first to a rearrangement of the trips, because
   the trip with the added dive is moved before the trip with
   the removed dive.
4) In such a case, the filter-model checks the visibility of
   the trip.
5) Since the trip with the removed dive has no dives in the core,
   visibility was determined as false.
6) From this point on the mappings of the QSortFilterProxyModel
   were messed up. Accesses led to crashes. It is unclear
   whether this is a Qt bug or only a QOI issue.

As a quick-fix, cache the visibility flag of trips directly
in the Qt-models. Don't set the visibility directly in the
core, but go via the Qt-models. Thus, a more clear layering
is achieved.

In the long run, we can hopefully get rid of the data-duplication
in the models.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-06-23 20:08:46 +02:00
Berthold Stoeger
7f4d9db962 Cleanup: move trip-related functions into own translation unit
These functions were spread out over dive.c and divelist.c.
Move them into their own file to make all this a bit less monolithic.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-06-19 13:11:10 -07:00
Berthold Stoeger
29c6aea797 Filter: prevent selection-change notifications in filter invalidation
Invalidating the filter can cause numerous selection-change notifications.
These cause a full UI reload. Therefore, go into "command" mode that was
implemented for the undo commands. Then, all selection-changes are
considered as "programmatical" and ignored.

At the end of filter invalidation, a filter-finished signal causes a
proper reload anyway.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:06:19 -07:00
Berthold Stoeger
83926213ea Filter: don't reload when dive sites are set to the same value
When switching between the dive-site-table to the dive-site-edit
tabs, the filter would be set to a dive site. Usually, this would
be the same dive site as before. Nevertheless, this caused a full
map-reload. Detect if the dive-sites to be filtered are the same
and turn this operation into a no-op.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:06:19 -07:00
Berthold Stoeger
065423896d Filter: add reference counting for dive-site mode
The dive-site-edit and dive-site-table tabs both put the filter
into a special dive-site mode. When switching between both, it
could happen that the one got its show befor the other got
its hide event.

Thus, the first would start dive-site filtering and the second
stop it. Now the app was not in filter mode even though it should.

To solve this problem, add reference counting for the filter's
dive-site mode. In both tabs call the enter/exit functions
on show/hide. In the dive-site-table tab, when the selection
changes, use a set function that doesn't modify the reference count.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:06:19 -07:00
Berthold Stoeger
cd5489e08d Map: in dive-site-edit mode, select those maps we filter for
When dive sites are edited, we shouldn't highlight the sites
of the current dive, but the currently edited site(s).

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:06:19 -07:00
Berthold Stoeger
3e05d61eb9 Map: show all dive sites when in dive-site filter mode
When on the dive site tab or editing a dive site, we want
to show all dive sites so that the user can related different
dive sites. Therefore export a "in dive site mode" flag from
the filter model and don't filter in that case in MapWidgetHelper.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:06:19 -07:00
Berthold Stoeger
afde4dce0d Filter: allow filtering multiple dive sites
In the edit-dive-site tab the filter is switched to a particular
mode where only dives at that site are shown.

If we want to reuse this for the dive-site tab the mode has to
be extended to allow for multiple dive sites. This is trivially
done by replacing a pointer by a vector of pointers.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
5aacd73a00 Filter: call update title directly in filter model
Instead of sending a signal when counts change, catching them
in the filter widget and update the window title there,
directly update the window title in the model. This removes a
signal/slot pair.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
9afea37e15 Undo: update filter flag when dives change
The filter code is strange: it actually only checks the
dive->hidden_by_filter flag. Thus, before propagating the dive
changed signal, this flag has to be updated. Do this in the
DiveTripModel. Ultimately, this should be refactored.

Moreover, if the filter-flag changed notify the frontend
of a changed trip so that the trip is hidden / unhidden.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
c22fd9f4fd Dive sites: prepare for dive site ref-counting
Add a dive site table to each dive site to keep track of dives
that have been added to a dive site. Add two functions to add
dives to / remove dives from dive sites.

Since dive sites now contain a dive table, the order of includes
had to be changed: "divesite.h" now includes "dive.h" and not
vice-versa. This caused some include churn.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Willem Ferguson
10e7835290 Filter panel: add suit and notes search fields
All the field in the Notes Panel of the main window are now supported.
This needs some testing especially for the Notes field that may contain
markup. It appears ok to me for single term searches. One would like
to think about the default search option for the Notes.
There is a vertical spacer in the Filter panel that I moved downwards
and whose function I am not quite sure of.

[Dirk Hohndel: small adjustments]

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2019-02-28 15:45:42 -08:00
willemferguson
2cda456282 Append the dive mode as a tag that is seen by the filter tool.
This allows one to filter dives by divemode, e.g. by typing
"CCR" or "Open circuit" in the tags textbox of the filter tool.
Quite useful if one dives using more than one dive mode. For the
purpose of the filter tool only the dive mode attribute is added
to the list of tags for the specific dive being considered. The
tag list for the same dive (in the XML dive log) is not affected
in any way.

Provide for translation in alternative languages (Response to
bstoeger's suggestion).

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
2019-02-28 07:29:15 -08:00
Berthold Stoeger
e550a788f0 Filter: implement any-of mode
Add an additional mode to the tags, people and location filters: any_of.
Replace the original invert-bool by an enum.
Move the common code into a distinct function.

Reported-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-02-19 12:02:15 -08:00
Berthold Stoeger
de4e6792c6 Filter: quick implementation of negation
Add negate buttons to the Tags, People, Location and Equipment
filters. Currently, if nothing is entered the filter is ignored
whether negate is on or off. One might think about filtering all
dives without tags, etc. instead.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-26 11:13:01 -08:00
Berthold Stoeger
c210bfc0e0 Filter: update counts if dives added / removed
Update the filter counts if dives were added removed by the
undo commands. The undo commands call into the filter model
at the right time so that hidden_by_filter is already set.
The filter model keeps track of the counts and emits a signal,
which is caught by the widget.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-26 08:05:39 -08:00
Berthold Stoeger
b28e0bf0b9 Filter: support imperial units
1) Choose the correct conversion function for comparison.
2) Add a unit suffix to the fields.
3) Update the suffixes on change of preferences.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-22 10:01:22 +12:00
Jan Mulder
e8b0d165a7 Desktop, Filter UI: make date/time consistent
On all (most?) places we use separate date/time fields for the time of a
dive, and we follow the setting from the preferences to format those.

Make the new filter widget consistent, with respect to the to and from
interval.

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
2019-01-21 17:22:24 +12:00
Berthold Stoeger
8fa156eb0d Filter: make tags, people and location filter logically-and
If the user provides multiple tags, they probably want to search for
dive with *all* of these tags. Replace the convoluted loops by
std::all_of(). This makes it trivial to change logically-and to
logically-or: Replace std::all_of() by std::any_of().

Reported-by: Jan Mulder <jlmulder@xs4all.nl>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-19 13:59:24 -08:00
Berthold Stoeger
b3010df14c Filter: reinstate dive-site filter functionality
Commit 201f0c8f89 removed the dive-site
filtering. This is needed for dive-site editing: The list should only
show dives at the corresponding dive-site.

As opposed to the original code, only compare for the actual dive-site,
not for the name of the dive-site. The reason for comparing dive-site
names is unknown.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-19 13:59:24 -08:00
Berthold Stoeger
37a521eb5d Filter: ignore unset temperatures
The filter treated unset air and water temperatures as 0 K, leading
to many dives not being shown. Don't filter on unset temperatures.

Reported-by: Jan Mulder <jlmulder@xs4all.nl>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-19 13:59:24 -08:00
Berthold Stoeger
36fa27050c Filter: update filterData directly without copying
In FilterWidget2::updateFilter() a new FilterData object is generated
and then copied onto the filterData member variable. Instead, modify
filterData directly. This seems also more logical from a semantic
point of view: Do we want to reset fields that were not set by the
user?

Contains trivial whitespace fix.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-19 13:59:24 -08:00
Robert C. Helling
123f3ef7ec Filter for logged/planned dives
Add filter for dives having a planned dive computer or
a logged dive computer.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
2019-01-08 10:39:06 +01:00
Berthold Stoeger
f1fc89b978 Dive list: split DiveTripModel into distinct models (tree and list)
The DiveTripModel was used to represent both, trip and list views.
Thus many functions had conditionals checking for the current mode
and both modes had to be represented by the same data structure.

Instead, split the model in two and derive them from a base class,
which implements common functions and defines an interface.

The model can be switched by a call to resetModel(), which invalidates
any pointer obtained by instance(). This is quite surprising
behavior. To handle it, straighten out the control flow:

DiveListView --> MultiFilterSortModel --> DiveTripModelBase

Before, DiveListView accessed DiveTripModelBase directly.

A goal of this commit is to enable usage of the same model by mobile
and desktop.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-07 09:33:52 -08:00
Berthold Stoeger
b5704ddb57 Cleanup: Remove MultiFilterSortModel::model
The source-model was cached in MultiFilterSortModel. For simplicity,
remove that and simply access via DiveTripModel::instance(). There
is only one instance where the cached model was used: when comparing
items for sorting. Thus, in indirection is added in a "hot" path.
Nevertheless, this will dwarf against the cost of string comparison.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-01-07 09:33:52 -08:00
Tomaz Canabrava
705e61b62c Hide unimplemented components from search
Those fields are not ready yet, hide them.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
2018-12-14 01:05:18 +08:00
Tomaz Canabrava
201f0c8f89 Filter the data
Wire up the needed code to filter the data in the myInvalidate
call. The data comes from the Struct FilterData and if any
of the test conditions on the filter function are false, the
filter will assume that the specific dive shouldn't be shown

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
2018-12-14 01:05:18 +08:00
Tomaz Canabrava
e0f473fcb4 Drop old filter code
Drop tons of now-unused-code.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
2018-12-14 01:05:18 +08:00
Tomaz Canabrava
81bb6086c0 Struct FilterData
The idea is that this struct will have all the needed data
that will be passed to the filter model. Everything that happens
on the filterwidget will fill out this struct, then forward it
to the model, that in turn will activate the filter hiding
some of the dives that matches on your divelist.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
2018-12-14 01:05:18 +08:00
Berthold Stoeger
9e565e3552 Cleanup: make "struct dive *" and "struct dive_trip *" Qt metatypes
Just as we did for pointer to struct dive_site, make pointers to
struct dive and struct dive_trip "Qt metatypes". This means that
they can be passed through QVariants without taking a detour via
void *.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-11-23 13:22:24 -08:00
Berthold Stoeger
6b283e598a Dive list: replace dive-list of trips by a table
The dives of each trip were kept in a list. Replace this by a
struct dive_table. This will make it significantly easier to
keep the dives of a trip in sorted state.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-11-18 16:50:09 -08:00
Berthold Stoeger
ab894c9b64 Dive list: implement custom lessThan function
The dive list was sorted using the default-sorter of
QSortFilterProxy model. This is mighty inflexible as it
considers only one column. This has the funky effect that
for rows with identical elements, the sort order depends
on the previous sorting.

Implement a lessThan() function in the MultiFilterSortModel,
which simply hands the sorting down to the actual model.
This might be considered a layering violation, but it makes
things so much easier.

Sadly, it seems like the column-to-be-sorted is transported
in the provided indices. Therefore, the comparison is chosen
using a switch for *every* comparison. It would seem much
more logical to set a function pointer once and use that.
Further investigations are necessary.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-11-01 07:28:15 -07:00
Berthold Stoeger
803111ef02 Dive list: make filter model aware of its source
The data-flow from C-core to list-view is as follows:

C-core --> DiveTripModel --> MultiSortFilterModel --> DiveListView

The control-flow, on the other hand, differs as DiveListView
accesses both MultiSortFilterModel and DiveTripModel, whereas
MultiSortFilterModel is mostly unaware of its source model.

This is in principle legitimate, as the MultiSortFilterModel might
be used for different sources. In our particular case, this is
not so. MultiSortFilterModel is written for a particular use case.

Therefore, model control-flow follow after data-flow: Let MultiSortFilterModel
set its own source model and DiveListView access the MultiSortFilterModel,
which then manages its source model.

This is not bike-shedding, but will enable a more flexible and
higher-performance sorting.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-11-01 07:28:15 -07:00
Berthold Stoeger
e8b3fdb4a6 Dive site: compare pointers in MultiFilterSortModel::showDive()
To test whether to show a dive, the UUIDs of the filtered-by
location and the dive-site of a dive were compared. Since UUIDs
are unique (as the name implies), directly compare pointers.
Note: this code comes from a time when the filtered-by location
was not a pointer, but a copy.

Moreover, the if tested first for the same name, then (logical-or)
for the same uuid. This makes no sense, as the same dive-site
implies the same name. This code likewise can be explained by
historic reasons: the filtered-by location may have contained
a different name. Swap the order of the conditions: first test
for the same object and only of the objects differ, test for
the same same.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-29 00:09:31 +00:00
Berthold Stoeger
724055f0af Dive site: replace dive->dive_site_uuid by dive_site
Replace the UUID reference of struct dive by a pointer to dive_site.
This commit is rather large in lines, but nevertheless quite simple
since most of the UUID->pointer work was done in previous commits.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-29 00:09:31 +00:00
Berthold Stoeger
acd44467c1 Dive site: remove [start|stop]FilterDiveSite signals
This is another case of a weird pattern where an object would
connect it's own signal to the slot of a different object.
There seems to be no reason why the former couldn't simply
call the latter.

Remove the [start|stop]FilterDiveSite signals of LocationInformationWidget
and call the corresponding functions of MultiFilterSortModel directly.
While doing so, replace the UUID argument by a pointer-to-divesite.
It will be converted anyway right at the beginning of the function.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-29 00:09:31 +00:00
Berthold Stoeger
9829e49815 Dive list: move dive-selection code from filter to list
After invalidating the filter, the dive-selection was modified to
ensure that at least one dive is selected. This was done in the
filter code, but it seems preferrable to do this in the dive-list
code, which has direct access to the selection-model.

Therefore, move the code from MultiFilterSortModel to DiveListView.
While doing so, split the code in DiveListView into more functions to:
1) Get the index of the first dive (if any).
2) Select the first dive (if any).

This allows a distinct size reduction of conditional compilation
in MultiFilterSortModel (accesses to MainWindow are not possible
in mobile code).

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-21 19:57:49 +03:00
Berthold Stoeger
068b01aef2 Cleanup: rename MainWindow member variables
Instead of the weirdly named "information" and the inconsistent
"dive_list" use the logical "mainTab" and the camel-cased
"diveList", respectively.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-13 21:42:53 -04:00
Berthold Stoeger
78e2560296 Cleanup: Turn widget accessor-functions into simple pointers
The keeps track of different sub widgets needed by other parts
of the code, notably:
	MainTab
	PlannerDetails
	PlannerSettingsWidget
	ProfileWidget2
	DivePlannerWidget
	DiveListView
Access to these widgets was provided with accessor functions.
Now these functions were very weird: instead of simply returning
pointers that were stored in the class, they accessed a data
structure which describes the different application states.
But this data structure was "duck-typed", so there was an
implicit agreement at which position the pointers to the
widgets were put inside. The widgets were then down-cast by
the accessor functions. This might make sense if the individual
widgets could for some reason be replaced by other widgets
[dynamic plugins?], but even then it would be strange, as one
would expect to get a pointer to some base class.

Therefore, directly store the properly typed pointers to the
widgets and simply remove the accessor functions. Why bother?

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-13 21:42:53 -04:00
Berthold Stoeger
e0fcf99d0a Filter: reload only when checkstate changed
Currently, the filter is recalculated if a filter-entry is changed.
This also happens if the counts of a filter-entry changes. This
is to be avoided, as it causes unnecessary churn.

Therefore, send the proper role with the dataChanged() signal
and add a new slot, which invalidates only if a field with the
Qt::CheckStateRole is changed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-11 16:22:27 -07:00
Berthold Stoeger
7150d1c6f6 Filter: Make filters aware of added / removed dives
Instead of reloading all the filter, only increment / decrement the
count of the entries of added / removed dives.

Originally, this was planned to be done via the signals from the
divelist, but it turned out that this was suboptimal, because
if the filter decides that the new item is selected, this has to
be done *before* adding the dive. Otherwise, it wouldn't be shown.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-11 16:22:27 -07:00
Berthold Stoeger
236f0512be Filter: sort filter items in FilterModelBase::updateList()
All callers of FilterModelBase::updateList() sorted the items
(except the last one). Thus we can do the sorting inside the
function.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-31 07:48:23 -07:00
Berthold Stoeger
9b90c461a2 Filter: Make FilterModelBase a proper Qt model (mostly)
Since FilterModelBase now contains complex data (counts and checked),
we might just as well make it a full model and keep track of
the name as well. I.e. do not derive from QStringListModel but from
QAbstractListModel and add the name to the item structure.

Implement proper reset / add / rename semantics. This is overkill at the
moment, as after all any modification the model will be reset, but
ultimately it will allow us to be smarter and only update rows when
needed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-31 07:48:23 -07:00
Berthold Stoeger
66aeaddd0f Filter: cache number of dives fulfilling filter rules
Currently, in FilterModelBase::data() the number of dives is recalculated.
This happens for every mouse-over event!

Calculate the number of dives only on recalculation and store the count
in the items-struct.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-28 05:03:59 -07:00
Berthold Stoeger
e3f8615054 Whitespace: make range based for loops consistent in filtermodels.cpp
Consistently use "for(item: items)" instead if "for(item : items)".

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-28 05:03:59 -07:00
Berthold Stoeger
ec586d0e0a Filter: replace checked-state by struct
In the future, we might be smarter about the dive-counts and calculate
them only once and incrementally (if e.g. new dives are added).
Prepare for more complex caching by turning the checked boolean into
a struct, which can then be extended by a count and other things
(e.g. the name).

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-28 05:03:59 -07:00
Berthold Stoeger
979f81f409 Filter: separate backend from frontend logic
The filter code was an unholy intermixture of backend and frontend
logic, which made it hard to access it from outside of the UI.
Notably, it expected that Qt would call filterAcceptsRow on all rows.
For trip-view, apparently the filter functions were called twice
(once for filtering the trip, then for filtering the individual dives).

Make the filtering explicit, by calling showDive() for all dives in
MultiFilterSortModel::myInvalidate(), setting the hidden_by_filter
flags accordingly and ultimately invalidating the filter.

The UI code only accesses the hidden_by_filter flag set previously.

The "justCleared" flag can then be removed, since accessing the filter
does not have side effects. Moreover, there is no noticeable performance
gain by returning out early.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-08-16 08:07:25 +02:00