JetBrains / fernflower 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 2,714 units with 42,463 lines of code in units (76.8% of code).

20 very complex units (9,388 lines of code)
34 complex units (3,376 lines of code)
193 medium complex units (9,776 lines of code)
269 simple units (6,159 lines of code)
2,198 very simple units (13,764 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
static in testData/obfuscated/a3.java	1914	355	0
public void processBlock() in src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java	340	179	3
static in testData/obfuscated/an.java	886	163	0
static in testData/obfuscated/bb.java	830	154	0
static in testData/obfuscated/s.java	830	154	0
static in testData/obfuscated/p.java	830	154	0
static in testData/obfuscated/a5.java	838	154	0
private static Exprent identifySecondaryFunctions() in src/org/jetbrains/java/decompiler/modules/decompiler/SecondaryFunctionsHelper.java	219	78	3
private void computeMethodType() in src/org/jetbrains/java/decompiler/main/rels/NestedMemberAccess.java	129	71	2
private boolean methodToJava() in src/org/jetbrains/java/decompiler/main/ClassWriter.java	216	69	5
static in testData/obfuscated/a8.java	372	67	0
public TextBuffer toJava() in src/org/jetbrains/java/decompiler/modules/decompiler/exps/ConstExprent.java	142	65	2
public TextBuffer toJava() in src/org/jetbrains/java/decompiler/modules/decompiler/exps/NewExprent.java	194	63	2
private void flattenStatement() in src/org/jetbrains/java/decompiler/modules/decompiler/sforms/FlattenStatementsHelper.java	260	62	0
static in testData/obfuscated/aw.java	316	58	0
static in testData/obfuscated/al.java	316	58	0
static in testData/obfuscated/v.java	316	58	0
private static boolean tryConvertForEach() in src/org/jetbrains/java/decompiler/modules/decompiler/MergeHelper.java	124	58	7
public void loadClasses() in src/org/jetbrains/java/decompiler/main/ClassesProcessor.java	172	56	1
public TextBuffer toJava() in src/org/jetbrains/java/decompiler/modules/decompiler/exps/InvocationExprent.java	144	51	2
private static void computeLocalVarsAndDefinitions() in src/org/jetbrains/java/decompiler/main/rels/NestedClassProcessor.java	137	50	1
private static void processSpecialInstructions() in src/org/jetbrains/java/decompiler/code/interpreter/InstructionImpact.java	141	49	3
private void processExprent() in src/org/jetbrains/java/decompiler/modules/decompiler/sforms/SSAUConstructorSparseEx.java	187	46	4
private Record getFinallyInformation() in src/org/jetbrains/java/decompiler/modules/decompiler/FinallyProcessor.java	131	46	4
public CheckTypesResult checkExprTypeBounds() in src/org/jetbrains/java/decompiler/modules/decompiler/exps/FunctionExprent.java	80	45	0
private static void insertLocalVars() in src/org/jetbrains/java/decompiler/main/rels/NestedClassProcessor.java	167	44	2
private static boolean removeReturnCheck() in src/org/jetbrains/java/decompiler/modules/decompiler/IdeaNotNullHelper.java	104	44	2
private void writeClassDefinition() in src/org/jetbrains/java/decompiler/main/ClassWriter.java	123	40	3
private static boolean reorderIf() in src/org/jetbrains/java/decompiler/modules/decompiler/IfHelper.java	156	40	1
private InstructionSequence parseBytecode() in src/org/jetbrains/java/decompiler/struct/StructMethod.java	178	40	3
private static Statement findGeneralStatement() in src/org/jetbrains/java/decompiler/modules/decompiler/DomHelper.java	118	39	3
private static boolean buildIff() in src/org/jetbrains/java/decompiler/modules/decompiler/SimplifyExprentsHelper.java	80	36	2
private static void simpleMerge() in src/org/jetbrains/java/decompiler/modules/decompiler/vars/VarVersionsProcessor.java	82	35	3
private static boolean removeEmptyBlock() in src/org/jetbrains/java/decompiler/modules/code/DeadCodeHelper.java	94	32	3
public static boolean addTryWithResourceJ11() in src/org/jetbrains/java/decompiler/modules/decompiler/TryHelper.java	87	32	3
public void classToJava() in src/org/jetbrains/java/decompiler/main/ClassWriter.java	97	31	4
private static void extractDynamicInitializers() in src/org/jetbrains/java/decompiler/main/InitializerProcessor.java	79	30	1
private static boolean findAndReduceRedundantLoop() in src/org/jetbrains/java/decompiler/modules/decompiler/EliminateLoopsHelper.java	87	30	1
public static boolean getCastedExprent() in src/org/jetbrains/java/decompiler/modules/decompiler/ExprProcessor.java	49	30	9
private static int isArrayInitializer() in src/org/jetbrains/java/decompiler/modules/decompiler/SimplifyExprentsHelper.java	66	30	2
private static boolean processCatchStatement() in src/org/jetbrains/java/decompiler/modules/decompiler/PatternHelper.java	65	29	2
private static RecordConstructorContext tryToDeleteRecordConstructor() in src/org/jetbrains/java/decompiler/main/ClassWriter.java	79	28	4
private TextBuffer createFloat() in src/org/jetbrains/java/decompiler/modules/decompiler/exps/ConstExprent.java	53	28	3
private void propogateLVTs() in src/org/jetbrains/java/decompiler/modules/decompiler/vars/VarDefinitionHelper.java	85	28	1
public static void duplicateMergedMatchedExceptionCatchBlocks() in src/org/jetbrains/java/decompiler/modules/decompiler/deobfuscator/ExceptionDeobfuscator.java	86	28	2
private static void condenseSequencesRec() in src/org/jetbrains/java/decompiler/modules/decompiler/SequenceHelper.java	91	28	1
private static boolean findAndRemoveParameterCheck() in src/org/jetbrains/java/decompiler/modules/decompiler/IdeaNotNullHelper.java	72	28	2
private VPPEntry mergeVars() in src/org/jetbrains/java/decompiler/modules/decompiler/vars/VarDefinitionHelper.java	77	27	4
private Area compareSubGraphsEx() in src/org/jetbrains/java/decompiler/modules/decompiler/FinallyProcessor.java	91	27	7
public static Exprent parseAnnotationElement() in src/org/jetbrains/java/decompiler/struct/attr/StructAnnotationAttribute.java	69	27	2