Uber / NullAwayConditional 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 995 units with 11,038 lines of code in units (69.9% of code).

2 very complex units (696 lines of code)
2 complex units (210 lines of code)
31 medium complex units (1,580 lines of code)
68 simple units (1,929 lines of code)
892 very simple units (6,623 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	117	61	2
private static AccessPath buildAccessPathRecursive() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPath.java	105	33	4
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	105	28	8
private void analyzeFile() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParamsDriver.java	83	23	3
public CombinedLibraryModels() in nullaway/src/main/java/com/uber/nullaway/handlers/LibraryModelsHandler.java	109	23	2
private Description handleInvocation() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	78	22	4
private Description checkParamOverriding() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	94	19	5
public Description matchAssignment() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	52	17	2
private Description checkForReadBeforeInit() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	50	17	2
public void onMatchMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/StreamNullabilityPropagator.java	51	17	4
static void write() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/StubxWriter.java	76	16	5
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
private FieldInitEntities collectEntities() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	65	14	2
public void onMatchMethod() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractCheckHandler.java	84	14	4
public static void checkInstantiationForParameterizedTypedTree() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	49	13	5
public static void compareGenericTypeParameterNullabilityForCall() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	42	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	67	13	2
public Description createErrorDescription() in nullaway/src/main/java/com/uber/nullaway/ErrorBuilder.java	36	13	5
public Boolean visitClassType() in nullaway/src/main/java/com/uber/nullaway/generics/CompareNullabilityVisitor.java	46	12	2
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 matchBinary() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	27	12	2
public MethodInvocationNode onCFGBuildPhase1AfterVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	55	12	3
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
private void setNullnessForMapCalls() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	40	11	6
private static MapKey argumentToMapKeySpecifier() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPath.java	26	11	3
private ClassCacheRecord get() in nullaway/src/main/java/com/uber/nullaway/CodeAnnotationInfo.java	41	11	3
public Description matchVariable() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	29	11	2
private Element getInvokeOfSafeInitMethod() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	31	11	3
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/AssertionHandler.java	32	11	8
public void onMatchMethodReference() in nullaway/src/main/java/com/uber/nullaway/handlers/StreamNullabilityPropagator.java	39	11	4
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	57	10	7
public NullnessStore getNullnessInfoBeforeNewContext() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessAnalysis.java	28	10	3
private boolean relevantInitializerMethodOrBlock() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	30	10	2
private Multimap computeTree2Init() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	47	10	2
public static TreePath findEnclosingMethodOrLambdaOrInitializer() in nullaway/src/main/java/com/uber/nullaway/NullabilityUtil.java	23	10	2
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
public TransferResult visitAssignment() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	30	9	2
Nullness returnValueNullness() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	19	9	3
public Nullness getNullnessOfFieldForReceiverTree() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessAnalysis.java	28	9	5
public Type visitParameterizedType() in nullaway/src/main/java/com/uber/nullaway/generics/PreservedAnnotationTreeVisitor.java	43	9	2
public Description matchMemberSelect() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	21	9	2
private Description checkReturnExpression() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	39	9	5
private Description checkCastToNonNullTakesNullable() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	51	9	4