uber / NullAway - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 1,088 units with 12,014 lines of code in units (67.2% of code).

2 very complex units (697 lines of code)
3 complex units (311 lines of code)
33 medium complex units (1,641 lines of code)
77 simple units (2,264 lines of code)
973 very simple units (7,101 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
public static void test() in jmh/src/main/resources/DFlowBench.java	579	101	1
private boolean mayBeNullExpr() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	118	61	2
private Description handleInvocation() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	98	29	4
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	103	28	8
private Description checkParamOverriding() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	110	26	6
private void analyzeFile() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParamsDriver.java	88	24	3
public CombinedLibraryModels() in nullaway/src/main/java/com/uber/nullaway/handlers/LibraryModelsHandler.java	109	23	2
public static void write() in library-model/library-model-generator/src/main/java/com/uber/nullaway/libmodel/StubxWriter.java	95	20	7
public void compareGenericTypeParameterNullabilityForCall() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	65	19	6
public Description matchAssignment() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	54	19	2
private Description checkForReadBeforeInit() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	50	17	2
public NullnessStore getNullnessInfoBeforeNestedMethodNode() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessAnalysis.java	42	15	3
public void findValues() in nullaway/src/main/java/com/uber/nullaway/fixserialization/out/ClassAndMemberInfo.java	40	15	0
private void checkForUseOfParams() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParams.java	36	14	4
public Boolean visitClassType() in nullaway/src/main/java/com/uber/nullaway/generics/CheckIdenticalNullabilityVisitor.java	42	14	2
private FieldInitEntities collectEntities() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	66	14	2
public void onMatchMethod() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractCheckHandler.java	85	14	2
public static void checkGenericMethodCallTypeArguments() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	51	13	5
private boolean okToReadBeforeInitialized() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	38	13	2
private void checkFieldInitialization() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	62	13	2
private static boolean targetTypeMatches() in nullaway/src/main/java/com/uber/nullaway/NullabilityUtil.java	35	13	2
public Description createErrorDescription() in nullaway/src/main/java/com/uber/nullaway/ErrorBuilder.java	33	12	5
public static void checkInstantiationForParameterizedTypedTree() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	42	12	5
public void checkTypeParameterNullnessForAssignability() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	51	12	3
private void checkForMethodNullMarkedness() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	39	12	2
private ImmutableSet safeInitByCalleeBefore() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	55	12	3
public Description matchVariable() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	33	12	2
public Description matchBinary() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	27	12	2
private ClassCacheRecord get() in nullaway/src/main/java/com/uber/nullaway/CodeAnnotationInfo.java	43	12	3
public MethodInvocationNode onCFGBuildPhase1AfterVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	55	12	3
public void parseStubStream() in nullaway/src/main/java/com/uber/nullaway/handlers/StubxCacheUtil.java	56	12	2
public Predicate getAccessPathPredicateForNestedMethod() in nullaway/src/main/java/com/uber/nullaway/handlers/SynchronousCallbackHandler.java	42	12	2
private static void copyAndAnnotateJarEntry() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/BytecodeAnnotator.java	41	11	8
NullnessHint analyzeReturnType() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParams.java	29	11	0
public Description matchMemberSelect() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	26	11	2
private void setNullnessForMapCalls() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	40	11	6
public void onMatchMethodReference() in nullaway/src/main/java/com/uber/nullaway/handlers/StreamNullabilityPropagator.java	39	11	2
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/AssertionHandler.java	32	11	8
private static String getAstubxSignature() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParamsDriver.java	45	10	1
private boolean relevantInitializerMethodOrBlock() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	30	10	2
private ImmutableMultimap computeTree2Init() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	47	10	2
private void handleEnhancedForOverKeySet() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	40	10	4
private static NullnessStore lambdaInitialStore() in nullaway/src/main/java/com/uber/nullaway/dataflow/CoreNullnessStoreInitializer.java	59	10	7
public void onDataflowVisitReturn() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/fieldcontract/EnsuresNonNullIfHandler.java	44	10	4
private FieldAndGetterElements getFieldAndGetterForProperty() in nullaway/src/main/java/com/uber/nullaway/handlers/ApacheThriftIsSetHandler.java	25	10	2
private static boolean hasNullnessAnnotations() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/BytecodeAnnotator.java	21	9	1
private Description checkReturnExpression() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	39	9	5
private void checkNullableAnnotationPositionInType() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	32	9	3
private Description checkCastToNonNullTakesNullable() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	51	9	4
public TransferResult visitAssignment() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	30	9	2