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 1,289 units with 14,206 lines of code in units (65.3% of code).

1 very complex units (579 lines of code)
4 complex units (543 lines of code)
42 medium complex units (2,268 lines of code)
91 simple units (2,685 lines of code)
1,151 very simple units (8,131 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
public void init() in jdk-javac-plugin/src/main/java/com/uber/nullaway/javacplugin/NullnessAnnotationSerializer.java	216	46	2
private Description checkParamOverriding() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	139	30	6
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	95	30	8
def transform_args_text() in scripts/convert_addSourceLines_textblock.py	93	27	1
public static void write() in library-model/library-model-generator/src/main/java/com/uber/nullaway/libmodel/StubxWriter.java	127	25	7
private void analyzeFile() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParamsDriver.java	88	24	3
public void compareGenericTypeParameterNullabilityForCall() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	88	20	3
public Description matchAssignment() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	53	19	2
private Description handleInvocation() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	85	18	4
private Description checkForReadBeforeInit() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	49	17	2
static void processMethodRefTypeRelations() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsUtils.java	91	16	5
private boolean mayBeNullExpr() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	110	16	2
def find_matching_paren() in scripts/convert_addSourceLines_textblock.py	44	15	2
private static NullnessStore getAccessPathsForNestedMethod() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessAnalysis.java	43	15	4
public void findValues() in nullaway/src/main/java/com/uber/nullaway/fixserialization/out/ClassAndMemberInfo.java	40	15	0
public MethodParameterNullness onOverrideMethodInvocationParametersNullability() in nullaway/src/main/java/com/uber/nullaway/handlers/LibraryModelsHandler.java	64	15	4
public void parseStubStream() in nullaway/src/main/java/com/uber/nullaway/handlers/StubxCacheUtil.java	80	15	2
private void checkForUseOfParams() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParams.java	37	14	4
public Boolean visitClassType() in nullaway/src/main/java/com/uber/nullaway/generics/CheckIdenticalNullabilityVisitor.java	43	14	2
public void checkGenericMethodCallTypeArguments() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	45	14	2
public void checkTypeParameterNullnessForAssignability() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	42	14	2
private InvocationAndContext getInvocationAndContextForInference() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	58	14	3
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	100	14	2
def find_add_source_lines_calls() in scripts/convert_addSourceLines_textblock.py	43	13	1
private void checkFieldInitialization() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	62	13	2
public Predicate getAccessPathPredicateForNestedMethod() in nullaway/src/main/java/com/uber/nullaway/handlers/SynchronousCallbackHandler.java	44	13	2
private ClassCacheRecord get() in nullaway/src/main/java/com/uber/nullaway/CodeAnnotationInfo.java	43	12	3
public Description createErrorDescription() in nullaway/src/main/java/com/uber/nullaway/ErrorBuilder.java	33	12	5
public void checkInstantiationForParameterizedTypedTree() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	36	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	54	12	3
private boolean okToReadBeforeInitialized() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	32	12	2
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
public NullnessHint onDataflowVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/AssertionHandler.java	34	12	8
public MethodInvocationNode onCFGBuildPhase1AfterVisitMethodInvocation() in nullaway/src/main/java/com/uber/nullaway/handlers/contract/ContractHandler.java	55	12	3
NullnessHint analyzeReturnType() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParams.java	28	11	0
private static void copyAndAnnotateJarEntry() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/BytecodeAnnotator.java	41	11	8
private void setNullnessForMapCalls() in nullaway/src/main/java/com/uber/nullaway/dataflow/AccessPathNullnessPropagation.java	40	11	6
private NullnessStore lambdaInitialStore() in nullaway/src/main/java/com/uber/nullaway/dataflow/CoreNullnessStoreInitializer.java	64	11	7
private MethodInferenceResult runInferenceForCall() in nullaway/src/main/java/com/uber/nullaway/generics/GenericsChecks.java	70	11	6
public Description matchMemberSelect() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	26	11	2
public Description matchClass() in nullaway/src/main/java/com/uber/nullaway/NullAway.java	39	11	2
public MethodParameterNullness onOverrideMethodInvocationParametersNullability() in nullaway/src/main/java/com/uber/nullaway/handlers/RestrictiveAnnotationHandler.java	33	11	4
public void onMatchMethodReference() in nullaway/src/main/java/com/uber/nullaway/handlers/StreamNullabilityPropagator.java	39	11	2
public static AstubxData getAstubxData() in jdk-annotations/astubx-generator/src/main/java/com/uber/nullaway/jdkannotations/AstubxGenerator.java	45	10	1
private static String removeGenericAnnotations() in jdk-annotations/astubx-generator/src/main/java/com/uber/nullaway/jdkannotations/AstubxGenerator.java	27	10	1
private static String getAstubxSignature() in jar-infer/jar-infer-lib/src/main/java/com/uber/nullaway/jarinfer/DefinitelyDerefedParamsDriver.java	45	10	1