JetBrains / intellij-scala 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).

Learn more...

Conditional Complexity Overall

There are 14,349 units with 193,052 lines of code in units (66.3% of code).

55 very complex units (11,949 lines of code)
162 complex units (12,305 lines of code)
873 medium complex units (33,753 lines of code)
1,842 simple units (36,609 lines of code)
11,417 very simple units (98,436 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
private def getSpacingImpl() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/formatting/processors/ScalaSpacingProcessor.scala	1130	644	5
def getChildIndent() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/formatting/processors/ScalaIndentProcessor.scala	361	238	2
private def convertPsiToIntermediate() in scala/conversion/src/org/jetbrains/plugins/scala/conversion/JavaToScala.scala	441	169	2
override def expectedExprTypes() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/impl/expr/ExpectedTypesImpl.scala	331	160	3
def doResolve() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/resolve/ReferenceExpressionResolver.scala	481	158	4
override def typeText() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/ScalaTypePresentation.scala	372	152	3
private def convertBindToType() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/impl/expr/ScReferenceExpressionImpl.scala	260	127	1
def map() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parser/ASTNodeToPsiElement.scala	131	124	1
private def makeUParentAndPin[U <: UElement]() in scala/uast/src/org/jetbrains/plugins/scala/lang/psi/uast/converter/Scala2UastConverter.scala	188	123	2
private def superParentPattern() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/completion/ScalaSmartCompletionContributor.scala	256	121	1
private def problemsFor() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/resolve/processor/MethodResolveProcessor.scala	316	119	8
def isAccessible() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/resolve/ResolveUtils.scala	242	117	3
override def handleInsert() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/completion/handlers/ScalaInsertHandler.scala	275	116	2
def printType() in scala/decompiler/src/org/jetbrains/plugins/scala/decompiler/scalasig/ScalaSigPrinter.scala	175	113	1
private[this] def findImplicitObjectsImpl() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/implicits/ImplicitProcessor.scala	247	101	2
def checkModifiers() in scala/scala-impl/src/org/jetbrains/plugins/scala/annotator/modifiers/ModifierChecker.scala	284	99	1
private def delimiterAfter() in scala/tasty-reader/src/TreePrinter.scala	177	97	1
def processDeclarationForImportExpr() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/impl/toplevel/imports/ScImportStmtImpl.scala	286	97	7
private def parametersIn() in scala/tasty-reader/src/TreePrinter.scala	204	92	6
private def checkOverrideMembers[Res]() in scala/scala-impl/src/org/jetbrains/plugins/scala/annotator/OverridingAnnotator.scala	215	92	7
private def generateDesugaredExprTextWithMappings() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/impl/expr/ScForImpl.scala	332	92	1
override def parse() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parser/parsing/expressions/Expr1.scala	255	84	1
private def checkPatternType() in scala/scala-impl/src/org/jetbrains/plugins/scala/annotator/element/ScPatternAnnotator.scala	180	80	3
override def evaluate() in scala/debugger/src/org/jetbrains/plugins/scala/debugger/evaluation/evaluator/ScalaMethodEvaluator.scala	217	80	1
private def checkNotQualifiedReferenceElement() in scala/scala-impl/src/org/jetbrains/plugins/scala/annotator/element/ScReferenceAnnotator.scala	149	79	2
override def visitParameterizedType() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/ScalaConformance.scala	192	79	1
def tupleOp() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/intrinsics/TupleIntrinsics.scala	144	79	3
def processType() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/resolve/processor/BaseProcessor.scala	157	79	4
override def updateUI() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parameterInfo/ScalaFunctionParameterInfoHandler.scala	231	78	2
private def elementsForParameterInfo() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parameterInfo/ScalaFunctionParameterInfoHandler.scala	185	76	1
def checkExpressionType() in scala/scala-impl/src/org/jetbrains/plugins/scala/annotator/element/ScExpressionAnnotator.scala	138	75	4
private def textOfTemplate() in scala/tasty-reader/src/TreePrinter.scala	107	64	4
def hasNoSideEffects() in scala/scala-impl/src/org/jetbrains/plugins/scala/util/SideEffectsUtil.scala	80	64	1
def buildReplacement() in scala/structural-search/src/org/jetbrains/plugins/scala/structuralSearch/replace/ScalaReplacementBuilder.scala	225	63	3
protected def visit() in scala/conversion/src/org/jetbrains/plugins/scala/conversion/visitors/SimplePrintVisitor.scala	86	63	1
private def lubInner() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/ScalaBounds.scala	96	61	4
def needParentheses() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/ScalaPsiUtil.scala	112	61	2
def getShortText() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/refactoring/util/ScalaRefactoringUtil.scala	148	61	1
override def createHighlightUsagesHandler() in scala/scala-impl/src/org/jetbrains/plugins/scala/highlighter/usages/ScalaHighlightUsagesHandlerFactory.scala	111	60	2
private def getChildAttributesIntellijInner() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/formatting/ScalaBlockChildAttributes.scala	120	60	3
override def postProcessEnter() in scala/scala-impl/src/org/jetbrains/plugins/scala/editor/enterHandler/MultilineStringEnterHandler.scala	212	58	3
def checkMethodApplicability() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/Compatibility.scala	224	58	5
private def calcChildAlignment() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/formatting/ScalaBlockBuilder.scala	101	58	3
def checkConstructorApplicability() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/Compatibility.scala	291	57	4
def createMethodFromSettings() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/refactoring/extractMethod/ScalaExtractMethodUtils.scala	163	57	1
override def parse() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parser/parsing/expressions/SimpleExpr.scala	190	56	1
def namedTupleOp() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/types/intrinsics/NamedTupleIntrinsics.scala	109	56	2
private def appendDescriptors() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/folding/ScalaFoldingBuilder.scala	125	55	5
override def parse() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/parser/parsing/patterns/SimplePattern.scala	215	55	1
def processDeclarationsForTemplateBody() in scala/scala-impl/src/org/jetbrains/plugins/scala/lang/psi/impl/toplevel/typedef/ScTemplateDefinitionImpl.scala	103	55	4