JetBrains / intellij-coverage 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 1,320 units with 10,453 lines of code in units (65.6% of code).

0 very complex units (0 lines of code)
1 complex units (68 lines of code)
24 medium complex units (758 lines of code)
107 simple units (2,095 lines of code)
1,188 very simple units (7,532 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 MethodVisitor visitMethod() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/classFilter/KotlinValueClassFilter.java	68	29	5
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/compose/ComposeCheckingBranchFilter.java	13	21	5
protected void saveClass() in instrumentation/src/com/intellij/rt/coverage/util/InstructionsSection.java	37	21	3
public void applyHits() in src/com/intellij/rt/coverage/data/ClassData.java	56	21	0
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/KotlinCoroutinesFilter.java	34	17	5
public void visitVarInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/TryWithResourcesLineFilter.java	40	17	2
private void saveInstructionsToOwner() in instrumentation/src/com/intellij/rt/coverage/instrumentation/CoverageEnumeratorWithInstructions.java	43	15	0
public void visitEnd() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/classFilter/PrivateConstructorOfUtilClassFilter.java	15	15	0
public static ProjectData load() in instrumentation/src/com/intellij/rt/coverage/util/ProjectDataLoader.java	72	15	1
public void visitTypeInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/KotlinWhenMappingExceptionFilter.java	32	14	2
protected void writeClassMetadata() in test-discovery/src/com/intellij/rt/coverage/data/TestDiscoveryProtocolDataListener.java	41	14	2
public int getStatus() in src/com/intellij/rt/coverage/data/LineData.java	36	14	0
public static void readSequentially() in test-discovery/src/com/intellij/rt/coverage/data/api/TestDiscoveryProtocolUtil.java	56	13	2
public BranchData getInstructionsData() in src/com/intellij/rt/coverage/data/instructions/LineInstructions.java	30	13	1
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/KotlinWhenStringFilter.java	18	12	5
public void visitVarInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/JavaStringSwitchFilter.java	15	12	2
public static void assertIds() in instrumentation/src/com/intellij/rt/coverage/instrumentation/data/InstrumentationData.java	26	12	1
public static boolean canReadFile() in java6-utils/src/com/intellij/rt/coverage/report/XMLCoverageReport.java	31	12	1
public void visitInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/KotlinDefaultArgsLineFilter.java	16	11	1
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/TryWithResourcesLineFilter.java	18	11	5
public void visitJumpInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/KotlinWhenStringFilter.java	17	11	2
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/JavaStringSwitchFilter.java	17	11	5
private void readClass() in java6-utils/src/com/intellij/rt/coverage/report/XMLCoverageReport.java	31	11	3
protected String getCommonSuperClass() in util/src/com/intellij/rt/coverage/instrumentation/ClassWriterImpl.java	41	11	2
private IncludeStatus isIncludedInternal() in reporter/src/com/intellij/rt/coverage/aggregate/InheritanceFilter.java	23	11	3
public void visitInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/KotlinCoroutinesFilter.java	17	10	1
public void visitVarInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/TryWithResourcesJava8LineFilter.java	12	10	2
public boolean shouldIgnore() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/methods/EnumMethodsFilter.java	12	10	1
public void visitMethodInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/branches/KotlinLateinitFilter.java	17	10	5
public void visitEnd() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/classFilter/KotlinValueClassFilter.java	10	10	0
public FieldVisitor visitField() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/classFilter/PrivateConstructorOfUtilClassFilter.java	19	10	5
public void visit() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/classFilter/InheritanceCollectorFilter.java	23	10	6
private void applyLineMappings() in instrumentation/src/com/intellij/rt/coverage/instrumentation/data/ProjectContext.java	32	10	1
protected void saveClass() in instrumentation/src/com/intellij/rt/coverage/util/UncoveredBranchesSection.java	21	10	3
Decision shouldVisitMethod() in test-discovery/src/com/intellij/rt/coverage/testDiscovery/instrumentation/InstrumentedMethodsFilter.java	20	10	6
protected void writeVisitedMethod() in test-discovery/src/com/intellij/rt/coverage/data/TestDiscoveryProtocolDataListener.java	33	10	3
private static void readClassMetadata() in test-discovery/src/com/intellij/rt/coverage/data/api/TestDiscoveryProtocolUtil.java	25	10	2
private void readPackage() in java6-utils/src/com/intellij/rt/coverage/report/XMLCoverageReport.java	22	10	2
public BranchData getBranchData() in src/com/intellij/rt/coverage/data/LineData.java	23	10	0
private static ProjectData copyProjectData() in reporter/src/com/intellij/rt/coverage/aggregate/Aggregator.java	37	10	1
public static void push() in instrumentation/src/com/intellij/rt/coverage/instrumentation/InstrumentationUtils.java	13	9	2
public void visitVarInsn() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/lines/KotlinDefaultArgsLineFilter.java	13	9	2
public boolean shouldIgnore() in instrumentation/src/com/intellij/rt/coverage/instrumentation/filters/methods/KotlinLocalFunctionInsideIgnoredMethodFilter.java	22	9	1
public void createLineData() in instrumentation/src/com/intellij/rt/coverage/instrumentation/data/InstrumentationData.java	16	9	2
public boolean checkMethodIncluded() in instrumentation/src/com/intellij/rt/coverage/instrumentation/data/FilteredMethodStorage.java	21	9	1
private Counter writeClass() in java6-utils/src/com/intellij/rt/coverage/report/XMLCoverageReport.java	37	9	3
public void merge() in src/com/intellij/rt/coverage/data/instructions/LineInstructions.java	26	9	1
public ClassInstructions() in src/com/intellij/rt/coverage/data/instructions/ClassInstructions.java	34	9	2
public static void saveTestResults() in src/com/intellij/rt/coverage/util/TestTrackingIOUtil.java	34	9	3
private static RuleViolation processRule() in reporter/src/com/intellij/rt/coverage/verify/Verifier.java	32	9	1