• There are 93 files with units, with 6,694 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 1 complex files (McCabe index sum 126-250; 461 lines of code)
• 3 medium complex files (McCabe index sum 51-125; 1,059 lines of code)
• 9 slightly complex files (McCabe index sum 26-50; 1,637 lines of code)
• 80 simple files (McCabe index sum 1-25; 3,537 lines of code)
• 31 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
AbstractConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	461	61	127	28	35
ConfigProxyFactory.java in archaius2-core/src/main/java/com/netflix/archaius	416	30	92	22	10
DefaultPropertyFactory.java in archaius2-core/src/main/java/com/netflix/archaius	349	48	72	21	7
DefaultPropertyContainer.java in archaius2-core/src/main/java/com/netflix/archaius/property	294	23	54	18	11
DefaultCompositeConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	226	30	43	19	4
DefaultLayeredConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	204	24	41	20	10
StaticAbstractConfiguration.java in archaius2-archaius1-bridge/src/main/java/com/netflix/archaius/bridge	199	27	35	18	2
ConfigMapper.java in archaius2-core/src/main/java/com/netflix/archaius	130	3	33	25	31
JsonPersistedV2Reader.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2	178	15	32	18	17
AccessMonitorUtil.java in archaius2-core/src/main/java/com/netflix/archaius/instrumentation	164	19	30	18	6
PollingDynamicConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	152	18	29	19	5
InternalArchaiusModule.java in archaius2-guice/src/main/java/com/netflix/archaius/guice	208	20	28	13	7
DefaultConfigLoader.java in archaius2-core/src/main/java/com/netflix/archaius	176	12	27	15	12
ArchaiusType.java in archaius2-api/src/main/java/com/netflix/archaius/api	95	10	24	25	6
AbstractConfigurationBridge.java in archaius2-archaius1-bridge/src/main/java/com/netflix/archaius/bridge	167	22	24	14	3
PropertiesConfigReader.java in archaius2-core/src/main/java/com/netflix/archaius/readers	116	6	22	19	8
CommonsToConfig.java in archaius2-commons-configuration/src/main/java/com/netflix/archaius/commons	84	10	20	24	5
PrefixedViewConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	102	16	20	20	3
DefaultTypeConverterFactory.java in archaius2-core/src/main/java/com/netflix/archaius/converters	127	9	20	16	7
MapConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	83	17	19	23	2
StaticDeploymentContext.java in archaius2-archaius1-bridge/src/main/java/com/netflix/archaius/bridge	77	17	18	23	2
ArchaiusModule.java in archaius2-guice/src/main/java/com/netflix/archaius/guice	78	13	16	21	4
DefaultSettableConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	88	12	16	18	3
AbstractDependentConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	74	13	16	22	2
AbstractRegistryDecoder.java in archaius2-core/src/main/java/com/netflix/archaius	101	5	16	16	6
Layer.java in archaius2-api/src/main/java/com/netflix/archaius/api	51	8	16	31	8
DefaultPersisted2ClientConfig.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2	92	15	15	16	1
ConfigBasedDeploymentContext.java in archaius2-archaius1-bridge/src/main/java/com/netflix/archaius/bridge	73	15	15	21	1
Persisted2ConfigProvider.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2	99	4	14	14	8
PrivateViewConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	68	10	13	19	3
ArrayTypeConverterFactory.java in archaius2-core/src/main/java/com/netflix/archaius/converters	60	2	13	22	12
JDCConfigReader.java in archaius2-core/src/main/java/com/netflix/archaius/readers	76	5	13	17	7
ConfigurationInjectingListener.java in archaius2-guice/src/main/java/com/netflix/archaius/guice	89	3	12	13	9
TypesafeConfig.java in archaius2-typesafe/src/main/java/com/netflix/archaius/typesafe	66	8	10	15	2
ReadOnlyMap.java in archaius2-core/src/main/java/com/netflix/archaius	50	10	10	20	1
PropertyDetails.java in archaius2-api/src/main/java/com/netflix/archaius/api	37	7	10	27	4
ManualPollingStrategy.java in archaius2-core/src/main/java/com/netflix/archaius/config/polling	59	4	9	15	4
EmptyConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	37	8	8	22	1
PropertyOverrideVisitor.java in archaius2-core/src/main/java/com/netflix/archaius/visitor	47	4	8	17	3
URLConfigReader.java in archaius2-core/src/main/java/com/netflix/archaius/readers	88	5	8	9	4
ScopePriorityPropertyValueResolver.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2	28	1	7	25	7
EnvironmentConfig.java in archaius2-core/src/main/java/com/netflix/archaius/config	35	7	7	20	1
FixedPollingStrategy.java in archaius2-core/src/main/java/com/netflix/archaius/config/polling	54	3	7	13	5
MethodInvoker.java in archaius2-core/src/main/java/com/netflix/archaius/property	30	3	7	23	4
ConcatCascadeStrategy.java in archaius2-core/src/main/java/com/netflix/archaius/cascade	44	6	7	16	2
Property.java in archaius2-api/src/main/java/com/netflix/archaius/api	36	7	7	19	1
ScopePredicates.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2	43	3	6	14	3
HTTPStreamLoader.java in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2/loader	40	2	6	15	5
DependentConfigListener.java in archaius2-core/src/main/java/com/netflix/archaius/config	41	5	6	15	2
Config.java in archaius2-api/src/main/java/com/netflix/archaius/api	77	6	6	8	1

• 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.