• There are 522 files with units, with 65,008 lines of code.
• 7 very complex files (McCabe index sum 251+; 11,421 lines of code)
• 13 complex files (McCabe index sum 126-250; 7,118 lines of code)
• 48 medium complex files (McCabe index sum 51-125; 15,545 lines of code)
• 51 slightly complex files (McCabe index sum 26-50; 8,732 lines of code)
• 403 simple files (McCabe index sum 1-25; 22,192 lines of code)
• 58 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
MslControl.js in core/src/main/javascript/msg	2627	401	773	29	34
MslControl.java in core/src/main/java/com/netflix/msl/msg	1761	107	528	30	51
MslControl.cpp in core/src/main/cpp/msg	1773	86	417	24	43
schema.h in core/src/main/cpp/lib/rapidjson	1606	94	318	20	28
reader.h in core/src/main/cpp/lib/rapidjson	1367	60	289	21	75
asnjwk.js in core/src/main/javascript/lib	920	68	261	28	30
document.h in core/src/main/cpp/lib/rapidjson	1367	185	252	18	18
MessageHeader.js in core/src/main/javascript/msg	891	106	245	27	33
MessageInputStream.js in core/src/main/javascript/msg	888	104	217	24	9
clarinet.js in core/src/main/javascript/lib	577	25	193	33	94
MessageHeader.java in core/src/main/java/com/netflix/msl/msg	571	25	178	31	57
MessageBuilder.js in core/src/main/javascript/msg	517	53	159	31	18
MslObject.js in core/src/main/javascript/io	337	35	154	46	17
MslArray.js in core/src/main/javascript/io	335	35	153	46	19
MessageBuilder.java in core/src/main/java/com/netflix/msl/msg	417	45	149	36	20
regex.h in core/src/main/cpp/lib/rapidjson/internal	554	26	147	27	38
JsonWebKeyLadderExchange.js in core/src/main/javascript/keyx	550	91	146	27	12
MessageInputStream.java in core/src/main/java/com/netflix/msl/msg	478	25	141	29	24
MessageBuilder.cpp in core/src/main/cpp/msg	512	31	132	26	18
JsonWebEncryptionLadderExchange.js in core/src/main/javascript/keyx	491	76	127	26	12
MessageOutputStream.js in core/src/main/javascript/msg	416	60	119	29	10
AsymmetricWrappedExchange.js in core/src/main/javascript/keyx	396	56	109	28	11
ServiceToken.js in core/src/main/javascript/tokens	357	45	109	31	12
MslArray.java in core/src/main/java/com/netflix/msl/io	316	40	105	33	17
MessageServiceTokenBuilder.js in core/src/main/javascript/msg	353	42	102	29	7
MslCrypto.js in core/src/main/javascript/crypto	293	18	100	34	9
MslObject.java in core/src/main/java/com/netflix/msl/io	317	39	99	31	14
DiffieHellmanExchange.js in core/src/main/javascript/keyx	346	58	97	28	9
SymmetricWrappedExchange.js in core/src/main/javascript/keyx	364	55	97	27	8
MessageInputStream.cpp in core/src/main/cpp/msg	451	16	96	21	16
encodings.h in core/src/main/cpp/lib/rapidjson	509	51	90	18	9
pointer.h in core/src/main/cpp/lib/rapidjson	797	23	90	11	29
ThriftyUtf8Reader.java in core/src/main/java/com/netflix/msl/io	237	8	87	37	67
MslEncoderUtils.java in core/src/main/java/com/netflix/msl/io	212	9	87	41	24
writer.h in core/src/main/cpp/lib/rapidjson	389	43	85	22	14
SimpleMslStore.js in core/src/main/javascript/util	283	17	85	30	17
MasterToken.js in core/src/main/javascript/tokens	354	42	85	24	8
UserIdToken.js in core/src/main/javascript/tokens	320	42	84	26	8
SimpleMslStore.java in core/src/main/java/com/netflix/msl/util	261	15	83	32	20
AsymmetricWrappedExchange.java in core/src/main/java/com/netflix/msl/keyx	529	23	81	15	11
JsonWebKey.java in core/src/main/java/com/netflix/msl/crypto	371	18	80	22	33
SimpleMslStore.cpp in core/src/main/cpp/util	360	14	76	21	20
AsymmetricWrappedExchange.cpp in core/src/main/cpp/keyx	499	16	75	15	11
OpenSslLib.cpp in core/src/main/cpp/crypto	386	24	74	19	29
MslEncoderUtils.js in core/src/main/javascript/io	156	6	74	47	54
JsonMslObject.js in core/src/main/javascript/io	216	27	69	32	19
DiffieHellmanExchange.java in core/src/main/java/com/netflix/msl/keyx	351	23	68	19	9
MslEncoderUtils.cpp in core/src/main/cpp/io	165	7	68	41	20
MslArray.cpp in core/src/main/cpp/io	266	22	65	24	5
RsaCryptoContext.js in core/src/main/javascript/crypto	234	35	65	28	8

• 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.