• There are 796 files with units, with 123,323 lines of code.
• 13 very complex files (McCabe index sum 251+; 21,177 lines of code)
• 23 complex files (McCabe index sum 126-250; 18,778 lines of code)
• 82 medium complex files (McCabe index sum 51-125; 29,423 lines of code)
• 141 slightly complex files (McCabe index sum 26-50; 24,200 lines of code)
• 537 simple files (McCabe index sum 1-25; 29,745 lines of code)
• 240 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
BasicStreamReader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sr	3498	151	1018	29	50
MXParser.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/plexus/util/xml/pull	2485	82	804	32	64
ModelMerger.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/model/merge	2128	237	614	29	12
FullDTDReader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/dtd	2213	72	544	25	37
DOMWrappingReader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/stax2/ri/dom	1602	125	407	25	28
StreamScanner.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sr	1467	83	403	27	41
Jig.java in src/com.netflix.tools.jig/com/netflix/tools/jig	1467	63	359	24	65
CommandLine.java in src/com.netflix.tools.jig/com/netflix/tools/jig	1159	105	341	29	22
BufferingXmlWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	1302	57	302	23	24
StringUtils.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/plexus/util	979	91	289	30	15
MXSerializer.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/plexus/util/xml/pull	798	43	282	35	32
ValueDecoderFactory.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/stax2/ri/typed	1089	81	273	25	16
WstxSAXParser.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sax	990	86	253	26	19
BaseStreamWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	1110	75	244	22	33
ReaderConfig.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/api	1043	106	242	23	64
StringVisitorModelInterpolator.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/model/interpolation	996	43	229	23	17
SettingsXpp3Reader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/settings/io/xpp3	1108	39	221	20	28
DefaultModelValidator.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/model/validation	1435	44	211	15	20
ISOLatin1XmlWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	641	12	210	33	25
SourceModuleCompilation.java in src/com.netflix.tools.jig/com/netflix/module/compile/internal	1056	55	199	19	52
StreamBootstrapper.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/io	670	34	194	29	26
TextBuffer.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/util	893	47	192	22	12
DefaultModelBuilder.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/model/building	1014	45	190	19	25
AsciiXmlWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	610	12	190	31	23
RepositorySystemSupplier.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/eclipse/aether/supplier	979	121	181	18	2
ComparableVersion.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/artifact/versioning	592	52	177	30	23
Stax2ReaderAdapter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/stax2/ri	792	74	161	20	27
InputElementStack.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sr	605	52	156	26	24
AttributeCollector.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sr	680	42	154	23	18
ModuleCompiler.java in src/com.netflix.tools.jig/com/netflix/module/compile	932	46	146	16	32
SourceModuleOutput.java in src/com.netflix.tools.jig/com/netflix/module/compile/internal	809	37	136	17	28
EncodingXmlWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	701	48	133	19	16
ClassicConflictResolver.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/eclipse/aether/util/graph/transformer	596	46	132	22	18
WriterConfig.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/api	527	61	132	25	39
ModuleProxyTransporter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/module/maven/transport	619	39	129	21	17
AbstractDependencyManager.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/eclipse/aether/util/graph/manager	370	24	126	34	25
XmlReader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/codehaus/plexus/util/xml	390	27	122	31	20
MavenModelMerger.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/model/merge	479	41	120	25	8
ArtifactCandidates.java in src/com.netflix.tools.jig/com/netflix/tools/jig/module	489	33	118	24	14
ModuleRepositorySession.java in src/com.netflix.tools.jig/com/netflix/tools/jig/module	602	44	115	19	8
TypedStreamReader.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sr	538	34	114	21	28
WstxDOMWrappingWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/dom	416	30	112	27	18
SettingsXpp3Writer.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/settings/io/xpp3	459	17	111	24	24
BaseNsStreamWriter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/com/ctc/wstx/sw	486	28	111	23	18
ImmutableCollections.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/internal/xml	494	86	110	22	6
ImmutableCollections.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/api/xml	494	86	110	22	6
ImmutableCollections.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/api/model	497	86	110	22	6
ImmutableCollections.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/api/metadata	497	86	110	22	6
JdkTransporter.java in src/com.netflix.tools.jig/com/netflix/tools/jig/module/maven/transport	691	25	108	16	26
VersionRange.java in src/com.netflix.tools.jig/com/netflix/tools/jig/internal/org/apache/maven/artifact/versioning	337	17	104	31	28

• 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.