MakeStation(t + TileOffsByDiagDir(d), IsWaterTile(t + TileOffsByDiagDir(d)) ? HasTileWaterClass(t + TileOffsByDiagDir(d)) && GetWaterClass(t + TileOffsByDiagDir(d)) == WATER_CLASS_RIVER ? HasBit(_me[t + TileOffsByDiagDir(d)].m6, 0) ? o : GetTileOwner(t + TileOffsByDiagDir(d)) : GetTileOwner(t + TileOffsByDiagDir(d)) : wc == WATER_CLASS_SEA ? OWNER_WATER : o, sid, STATION_DOCK, GFX_DOCK_BASE_WATER_PART + DiagDirToAxis(d), wc);


static inline void MakeDock(TileIndex t, Owner o, StationID sid, DiagDirection d, WaterClass wc)
{
	MakeStation(t, o, sid, STATION_DOCK, d);

	int t2 = t + TileOffsByDiagDir(d);
	MakeStation(t2, // Decide the owner of the water tile placed under a dock.
		/* Make the owner of the dock tile the same as the current owner of the
		 * water tile.
		 * At this point, the information passed by the previous function has
		 * been prepared in a way which permits the Owner and the WaterClass to
		 * be set to their intended values.
		 * 
		 * A canal tile owned by OWNER_NONE has been made sure to have never
		 * been demolished during preparation, as that is needed to retrieve
		 * its respective owner, whenever it finds a river tile.
		 *
		 * If a river tile is found, it can mean either the previous function
		 * demolished own canal and a river was restored, as per the Canal on
		 * River patch's behaviour, or it is indeed a river tile which, albeit
		 * being demolished, it is kept, as per the Permanent Rivers patch
		 * behaviour.
		 * This is not enough to decide on the owner, but the previous function
		 * has assigned a bit value to indicate if there was originally a canal.
		 * If it was set, it means the canal was ours, and not from another
		 * owner. If the bit was not set, then it was indeed a river.
		 * 
		 * If a bare land tile is found at this stage, then it is known that no
		 * river was ever originally present, but it could have been a canal or
		 * a sea tile. To figure it out, it resorts to checking the original 
		 * WaterClass of the tile even before the clearance test had happen.
		 * If it was sea, then it sets the owner to OWNER_WATER. If it was a
		 * canal then it knows that only own canals could have been demolished
		 * during the clearance check previously, and also that canals
		 * owned by OWNER_NONE are not demolished. 
		 */
			IsWaterTile(t2) ? // 
					HasTileWaterClass(t2) && GetWaterClass(t2) == WATER_CLASS_RIVER ?
							HasBit(_me[t2].m6, 0) ?	o
							: GetTileOwner(t2)
					: GetTileOwner(t2)
			: wc == WATER_CLASS_SEA ? OWNER_WATER :	o,
		sid, STATION_DOCK, GFX_DOCK_BASE_WATER_PART + DiagDirToAxis(d), wc);
}