facebook / chisel

Conditional Complexity

The distribution of complexity of units (measured with McCabe index).

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 566 units with 4,483 lines of code in units (86.5% of code).

0 very complex units (0 lines of code)
1 complex units (48 lines of code)
12 medium complex units (528 lines of code)
19 simple units (436 lines of code)
534 very simple units (3,471 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
def run() in commands/FBPrintCommands.py	48	26	3
void PrintInstances() in Chisel/Chisel/CHLObjcInstanceCommands.mm	65	19	2
def argumentAsString() in commands/FBInvocationCommands.py	51	16	3
def run() in commands/FBDebugCommands.py	31	14	3
id CHLViableObjcInstance() in Chisel/Chisel/CHLObjcInstances.mm	42	13	2
def helpForCommand() in fbchisellldb.py	35	12	2
def run() in commands/FBPrintCommands.py	75	12	3
def inputCallback() in commands/FBFlickerCommands.py	40	12	2
def _visualize() in commands/FBVisualizationCommands.py	44	12	1
def helpForCommand() in fblldb.py	35	12	2
def upwardsRecursiveDescription() in fbchisellldbviewhelpers.py	31	11	2
def loadChiselIfNecessary() in commands/FBDebugCommands.py	27	11	1
def run() in commands/FBPrintCommands.py	52	11	3
def _copyFromData() in commands/FBCopyCommands.py	29	10	4
def makeRunCommand() in fbchisellldb.py	19	9	2
def find_missing_identifiers() in commands/FBXCTestCommands.py	13	9	2
def makeRunCommand() in fblldb.py	19	9	2
def switchBreakpointState() in commands/FBDebugCommands.py	16	8	2
def prettyPrintString() in commands/FBClassDump.py	23	8	1
def _showImage() in commands/FBVisualizationCommands.py	33	8	1
def functionPreambleExpressionForObjectParameterAtIndex() in fbchisellldbobjcruntimehelpers.py	25	8	1
static bool predicatePrecheck() in Chisel/Chisel/CHLObjcInstanceCommands.mm	19	7	2
def tableViewInHierarchy() in commands/FBPrintCommands.py	23	7	0
def loadCommandsInDirectory() in fbchisellldb.py	13	6	1
def run() in commands/FBDebugCommands.py	18	6	3
def run() in commands/FBXCTestCommands.py	26	6	3
def summary() in commands/FBXCTestCommands.py	37	6	4
def forceStartAccessibilityServer() in commands/FBAccessibilityCommands.py	12	6	0
def run() in commands/FBDisplayCommands.py	34	6	3
def decode() in commands/FBClassDump.py	34	6	1
def prettyPrintInvocation() in commands/FBInvocationCommands.py	30	6	2
def loadCommandsInDirectory() in fblldb.py	13	6	1
def validateArgsForCommand() in fbchisellldb.py	14	5	2
static bool objectIsMatch() in Chisel/Chisel/CHLObjcInstanceCommands.mm	21	5	3
static id embeddedObjcInstance() in Chisel/Chisel/CHLObjcInstances.mm	14	5	1
def run() in commands/FBDebugCommands.py	13	5	3
def run() in commands/FBFindCommands.py	13	5	3
def run() in commands/FBXCTestCommands.py	20	5	3
def name_for_value() in commands/FBXCTestCommands.py	12	5	2
def setBorderOnAmbiguousViewRecursive() in commands/FBAutoLayoutCommands.py	19	5	3
def printAccessibilityHierarchy() in commands/FBAccessibilityCommands.py	20	5	2
def printAccessibilityIdentifiersHierarchy() in commands/FBAccessibilityCommands.py	24	5	2
def run() in commands/FBClassDump.py	13	5	3
def getClassFromArgument() in commands/FBClassDump.py	14	5	2
def _showColor() in commands/FBVisualizationCommands.py	32	5	1
def _showLayer() in commands/FBVisualizationCommands.py	25	5	1
def printInvocationForFrame() in commands/FBInvocationCommands.py	37	5	1
def validateArgsForCommand() in fblldb.py	14	5	2
def functionPreambleExpressionForSelf() in fbchisellldbobjcruntimehelpers.py	13	5	0
def _viewControllerDescription() in fbchisellldbviewcontrollerhelpers.py	16	4	1