• There are 42 files with units, with 46,097 lines of code.
• 12 very complex files (McCabe index sum 251+; 32,380 lines of code)
• 12 complex files (McCabe index sum 126-250; 8,966 lines of code)
• 11 medium complex files (McCabe index sum 51-125; 4,267 lines of code)
• 1 slightly complex files (McCabe index sum 26-50; 283 lines of code)
• 6 simple files (McCabe index sum 1-25; 201 lines of code)
• 7 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
User.java in library/src/main/java/com/theguardian/bridget/thrift	4303	524	910	21	17
Videos.java in library/src/main/java/com/theguardian/bridget/thrift	4167	523	876	21	10
ListenToArticle.java in library/src/main/java/com/theguardian/bridget/thrift	3780	452	816	22	10
LiveActivities.java in library/src/main/java/com/theguardian/bridget/thrift	3434	380	768	22	17
Discussion.java in library/src/main/java/com/theguardian/bridget/thrift	3247	375	739	23	24
Tag.java in library/src/main/java/com/theguardian/bridget/thrift	2311	279	501	22	10
Notifications.java in library/src/main/java/com/theguardian/bridget/thrift	2311	279	501	22	10
Commercial.java in library/src/main/java/com/theguardian/bridget/thrift	2147	267	449	21	10
Acquisitions.java in library/src/main/java/com/theguardian/bridget/thrift	1893	258	398	21	10
Audio.java in library/src/main/java/com/theguardian/bridget/thrift	1883	256	384	20	8
Newsletters.java in library/src/main/java/com/theguardian/bridget/thrift	1556	188	341	22	17
Environment.java in library/src/main/java/com/theguardian/bridget/thrift	1348	175	277	21	10
Navigation.java in library/src/main/java/com/theguardian/bridget/thrift	1144	168	228	20	4
Gallery.java in library/src/main/java/com/theguardian/bridget/thrift	955	106	208	22	22
MatchNotifications.java in library/src/main/java/com/theguardian/bridget/thrift	824	102	183	22	10
Image.java in library/src/main/java/com/theguardian/bridget/thrift	658	52	166	25	34
Metrics.java in library/src/main/java/com/theguardian/bridget/thrift	763	97	158	21	10
Analytics.java in library/src/main/java/com/theguardian/bridget/thrift	761	97	157	21	10
AbTesting.java in library/src/main/java/com/theguardian/bridget/thrift	760	94	153	20	10
Interactives.java in library/src/main/java/com/theguardian/bridget/thrift	710	96	151	21	10
Epic.java in library/src/main/java/com/theguardian/bridget/thrift	576	46	149	26	31
VideoSlot.java in library/src/main/java/com/theguardian/bridget/thrift	576	48	149	26	31
Interaction.java in library/src/main/java/com/theguardian/bridget/thrift	705	96	144	20	8
AdSlot.java in library/src/main/java/com/theguardian/bridget/thrift	534	46	128	24	22
Rect.java in library/src/main/java/com/theguardian/bridget/thrift	533	50	122	23	23
Topic.java in library/src/main/java/com/theguardian/bridget/thrift	475	42	120	25	24
MetricFont.java in library/src/main/java/com/theguardian/bridget/thrift	477	44	118	25	22
FootballMatch.java in library/src/main/java/com/theguardian/bridget/thrift	394	40	98	25	17
VideoEvent.java in library/src/main/java/com/theguardian/bridget/thrift	384	39	95	25	17
FootballTeam.java in library/src/main/java/com/theguardian/bridget/thrift	384	38	94	24	17
MatchNotificationsAvailability.java in library/src/main/java/com/theguardian/bridget/thrift	388	39	92	24	15
MaybeEpic.java in library/src/main/java/com/theguardian/bridget/thrift	304	34	72	24	10
MaybeEmail.java in library/src/main/java/com/theguardian/bridget/thrift	299	33	70	23	10
MetricPaint.java in library/src/main/java/com/theguardian/bridget/thrift	287	35	62	22	8
Metric.java in library/src/main/java/com/theguardian/bridget/thrift	342	33	61	18	7
DiscussionServiceResponse.java in library/src/main/java/com/theguardian/bridget/thrift	283	28	49	17	5
MediaEvent.java in library/src/main/java/com/theguardian/bridget/thrift	61	3	17	28	15
SignInScreenReferrer.java in library/src/main/java/com/theguardian/bridget/thrift	34	3	8	24	6
SignInScreenReason.java in library/src/main/java/com/theguardian/bridget/thrift	34	3	8	24	6
NativePlatform.java in library/src/main/java/com/theguardian/bridget/thrift	25	3	5	20	3
PurchaseScreenReason.java in library/src/main/java/com/theguardian/bridget/thrift	25	3	5	20	3
DiscussionNativeError.java in library/src/main/java/com/theguardian/bridget/thrift	22	3	4	18	2

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.