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Codechange: Templatise SlStationSpecList to reduce duplication.

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SlStationSpecList now handles both StationSpec and RoadStopSpec, and replaces indexed array access with range-for and reserve/emplace_back pattern.
This commit is contained in:
Peter Nelson 2024-03-02 13:49:55 +00:00 committed by Peter Nelson
parent 41b3314d76
commit cff48c0f63
2 changed files with 34 additions and 46 deletions
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10
src/base_station_base.h
View File

@ -305,4 +305,14 @@ struct SpecializedStation : public BaseStation {
static Pool::IterateWrapper<T> Iterate(size_t from = 0) { return Pool::IterateWrapper<T>(from); }
};
/**
* Get spec mapping list for each supported custom spec type.
* @tparam T Spec type.
* @param bst Station of custom spec list.
* @return Speclist of custom spec type.
*/
template <class T> std::vector<SpecMapping<T>> &GetStationSpecList(BaseStation *bst);
template <> inline std::vector<SpecMapping<StationSpec>> &GetStationSpecList<StationSpec>(BaseStation *bst) { return bst->speclist; }
template <> inline std::vector<SpecMapping<RoadStopSpec>> &GetStationSpecList<RoadStopSpec>(BaseStation *bst) { return bst->roadstop_speclist; }
#endif /* BASE_STATION_BASE_H */

70
src/saveload/station_sl.cpp
View File

@ -202,65 +202,43 @@ static void SwapPackets(GoodsEntry *ge)
}
}
class SlStationSpecList : public DefaultSaveLoadHandler<SlStationSpecList, BaseStation> {
template <typename T>
class SlStationSpecList : public DefaultSaveLoadHandler<SlStationSpecList<T>, BaseStation> {
public:
inline static const SaveLoad description[] = {
SLE_CONDVAR(SpecMapping<StationSpec>, grfid, SLE_UINT32, SLV_27, SL_MAX_VERSION),
SLE_CONDVAR(SpecMapping<StationSpec>, localidx, SLE_FILE_U8 | SLE_VAR_U16, SLV_27, SLV_EXTEND_ENTITY_MAPPING),
SLE_CONDVAR(SpecMapping<StationSpec>, localidx, SLE_UINT16, SLV_EXTEND_ENTITY_MAPPING, SL_MAX_VERSION),
SLE_CONDVAR(SpecMapping<T>, grfid, SLE_UINT32, SLV_27, SL_MAX_VERSION),
SLE_CONDVAR(SpecMapping<T>, localidx, SLE_FILE_U8 | SLE_VAR_U16, SLV_27, SLV_EXTEND_ENTITY_MAPPING),
SLE_CONDVAR(SpecMapping<T>, localidx, SLE_UINT16, SLV_EXTEND_ENTITY_MAPPING, SL_MAX_VERSION),
};
inline const static SaveLoadCompatTable compat_description = _station_spec_list_sl_compat;
static uint8_t last_num_specs; ///< Number of specs of the last loaded station.
static inline uint8_t last_num_specs; ///< Number of specs of the last loaded station.
void Save(BaseStation *bst) const override
{
SlSetStructListLength(bst->speclist.size());
for (uint i = 0; i < bst->speclist.size(); i++) {
SlObject(&bst->speclist[i], this->GetDescription());
auto &speclist = GetStationSpecList<T>(bst);
SlSetStructListLength(speclist.size());
for (auto &sm : speclist) {
SlObject(&sm, this->GetDescription());
}
}
void Load(BaseStation *bst) const override
{
uint8_t num_specs = IsSavegameVersionBefore(SLV_SAVELOAD_LIST_LENGTH) ? last_num_specs : (uint8_t)SlGetStructListLength(UINT8_MAX);
size_t num_specs = IsSavegameVersionBefore(SLV_SAVELOAD_LIST_LENGTH) ? last_num_specs : SlGetStructListLength(UINT8_MAX);
bst->speclist.resize(num_specs);
for (uint i = 0; i < num_specs; i++) {
SlObject(&bst->speclist[i], this->GetLoadDescription());
auto &speclist = GetStationSpecList<T>(bst);
speclist.reserve(num_specs);
for (size_t index = 0; index < num_specs; ++index) {
auto &sm = speclist.emplace_back();
SlObject(&sm, this->GetLoadDescription());
}
}
};
uint8_t SlStationSpecList::last_num_specs;
class SlRoadStopSpecList : public DefaultSaveLoadHandler<SlRoadStopSpecList, BaseStation> {
public:
inline static const SaveLoad description[] = {
SLE_VAR(SpecMapping<RoadStopSpec>, grfid, SLE_UINT32),
SLE_CONDVAR(SpecMapping<RoadStopSpec>, localidx, SLE_FILE_U8 | SLE_VAR_U16, SLV_27, SLV_EXTEND_ENTITY_MAPPING),
SLE_CONDVAR(SpecMapping<RoadStopSpec>, localidx, SLE_UINT16, SLV_EXTEND_ENTITY_MAPPING, SL_MAX_VERSION),
};
inline const static SaveLoadCompatTable compat_description = _station_road_stop_spec_list_sl_compat;
void Save(BaseStation *bst) const override
{
SlSetStructListLength(bst->roadstop_speclist.size());
for (uint i = 0; i < bst->roadstop_speclist.size(); i++) {
SlObject(&bst->roadstop_speclist[i], this->GetDescription());
}
}
void Load(BaseStation *bst) const override
{
uint8_t num_specs = (uint8_t)SlGetStructListLength(UINT8_MAX);
bst->roadstop_speclist.resize(num_specs);
for (uint i = 0; i < num_specs; i++) {
SlObject(&bst->roadstop_speclist[i], this->GetLoadDescription());
}
}
};
/* Instantiate SlStationSpecList classes. */
template class SlStationSpecList<StationSpec>;
template class SlStationSpecList<RoadStopSpec>;
class SlStationCargo : public DefaultSaveLoadHandler<SlStationCargo, GoodsEntry> {
public:
@ -514,12 +492,12 @@ static const SaveLoad _old_station_desc[] = {
/* Used by newstations for graphic variations */
SLE_CONDVAR(Station, random_bits, SLE_UINT16, SLV_27, SL_MAX_VERSION),
SLE_CONDVAR(Station, waiting_triggers, SLE_UINT8, SLV_27, SL_MAX_VERSION),
SLEG_CONDVAR("num_specs", SlStationSpecList::last_num_specs, SLE_UINT8, SLV_27, SL_MAX_VERSION),
SLEG_CONDVAR("num_specs", SlStationSpecList<StationSpec>::last_num_specs, SLE_UINT8, SLV_27, SL_MAX_VERSION),
SLE_CONDREFLIST(Station, loading_vehicles, REF_VEHICLE, SLV_57, SL_MAX_VERSION),
SLEG_STRUCTLIST("goods", SlStationGoods),
SLEG_CONDSTRUCTLIST("speclist", SlStationSpecList, SLV_27, SL_MAX_VERSION),
SLEG_CONDSTRUCTLIST("speclist", SlStationSpecList<StationSpec>, SLV_27, SL_MAX_VERSION),
};
struct STNSChunkHandler : ChunkHandler {
@ -601,7 +579,7 @@ public:
/* Used by newstations for graphic variations */
SLE_VAR(BaseStation, random_bits, SLE_UINT16),
SLE_VAR(BaseStation, waiting_triggers, SLE_UINT8),
SLEG_CONDVAR("num_specs", SlStationSpecList::last_num_specs, SLE_UINT8, SL_MIN_VERSION, SLV_SAVELOAD_LIST_LENGTH),
SLEG_CONDVAR("num_specs", SlStationSpecList<StationSpec>::last_num_specs, SLE_UINT8, SL_MIN_VERSION, SLV_SAVELOAD_LIST_LENGTH),
};
inline const static SaveLoadCompatTable compat_description = _station_base_sl_compat;
@ -718,8 +696,8 @@ static const SaveLoad _station_desc[] = {
SLE_SAVEBYTE(BaseStation, facilities),
SLEG_STRUCT("normal", SlStationNormal),
SLEG_STRUCT("waypoint", SlStationWaypoint),
SLEG_CONDSTRUCTLIST("speclist", SlStationSpecList, SLV_27, SL_MAX_VERSION),
SLEG_CONDSTRUCTLIST("roadstopspeclist", SlRoadStopSpecList, SLV_NEWGRF_ROAD_STOPS, SL_MAX_VERSION),
SLEG_CONDSTRUCTLIST("speclist", SlStationSpecList<StationSpec>, SLV_27, SL_MAX_VERSION),
SLEG_CONDSTRUCTLIST("roadstopspeclist", SlStationSpecList<RoadStopSpec>, SLV_NEWGRF_ROAD_STOPS, SL_MAX_VERSION),
};
struct STNNChunkHandler : ChunkHandler {