uber / libphutil 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 1,944 units with 24,631 lines of code in units (62.3% of code).

0 very complex units (0 lines of code)
13 complex units (1,613 lines of code)
73 medium complex units (4,374 lines of code)
121 simple units (3,914 lines of code)
1,737 very simple units (14,730 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 function isReady() in src/future/http/HTTPSFuture.php	229	48	0
function phutil_is_utf8_slowly() in src/utils/utf8.php	106	47	2
public function isReady() in src/future/exec/ExecFuture.php	176	42	0
function phutil_units() in src/utils/utils.php	126	36	1
public function truncateString() in src/utils/PhutilUTF8StringTruncator.php	125	32	1
public function check() in src/parser/PhutilTypeSpec.php	91	32	2
private function parseInternal() in src/parser/argument/PhutilArgumentParser.php	137	32	3
private function parseAttributes() in src/parser/html/PhutilHTMLParser.php	115	31	1
private function computeMatrix() in src/utils/PhutilEditDistanceMatrix.php	114	30	2
private function generate() in src/sprites/PhutilSpriteSheet.php	140	28	0
function phutil_utf8_console_strlen() in src/utils/utf8.php	32	27	1
private function applyXHPHighlight() in src/markup/syntax/highlighter/xhpast/PhutilXHPASTSyntaxHighlighterFuture.php	107	27	1
public static function echoListener() in src/serviceprofiler/PhutilServiceProfiler.php	115	26	3
public function selectAndLoadSymbols() in src/symbols/PhutilSymbolLoader.php	92	24	0
public function continueParse() in src/aphront/multipartparser/AphrontMultipartParser.php	107	23	1
public static function didReduceTokens() in src/parser/PhutilTypeSpec.php	78	22	3
public function validateFile() in src/filesystem/FileFinder.php	60	21	1
public function find() in src/filesystem/FileFinder.php	83	21	0
private function buildTables() in src/parser/PhutilParserGenerator.php	88	21	0
public function getEditString() in src/utils/PhutilEditDistanceMatrix.php	77	20	0
public function evalStatic() in src/parser/xhpast/api/XHPASTNode.php	75	20	0
public function readBytes() in src/parser/http/PhutilHTTPResponseParser.php	101	19	1
public function getHeaderContentAsPairs() in src/aphront/headerparser/AphrontHTTPHeaderParser.php	86	19	0
protected function getRules() in src/lexer/PhutilLexer.php	110	19	0
function phutil_utf8_is_cjk() in src/utils/utf8.php	30	18	1
public function parse() in src/parser/PhutilSimpleOptions.php	73	18	1
private function newTagDOMNode() in src/parser/html/PhutilHTMLParser.php	71	18	1
public function parse() in src/parser/PhutilDocblockParser.php	81	18	1
function xsprintf_command() in src/xsprintf/csprintf.php	73	18	5
private function loadMap() in src/symbols/PhutilClassMapQuery.php	82	18	0
function phutil_fnmatch() in src/utils/utils.php	49	17	2
public function getHighlightFuture() in src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php	58	17	2
private function findInterestingSymbols() in src/markup/syntax/highlighter/xhpast/PhutilXHPASTSyntaxHighlighterFuture.php	68	17	1
public function next() in src/future/FutureIterator.php	77	17	0
protected static function newFromString() in src/ip/PhutilIPv6Address.php	96	17	1
public function handleMessage() in src/console/PhutilConsoleServer.php	77	17	1
function phutil_console_wrap() in src/console/format.php	70	17	3
function phutil_utf8v() in src/utils/utf8.php	48	16	2
public function __toString() in src/parser/PhutilURI.php	53	16	0
public function translate() in src/internationalization/PhutilTranslator.php	66	16	1
public function getTokens() in src/lexer/PhutilLexer.php	76	16	2
private function computeRuleReducible() in src/parser/PhutilParserGenerator.php	46	15	2
private function performAction() in externals/jsonlint/src/Seld/JsonLint/Lexer.php	35	15	2
function phutil_validate_json() in src/utils/utils.php	55	14	2
public function renderCow() in src/utils/PhutilCowsay.php	75	14	0
public function __construct() in src/parser/PhutilURI.php	79	14	2
function __phutil_autoload() in src/__phutil_library_init__.php	45	14	1
public function callMethod() in src/conduit/ConduitClient.php	65	14	2
private function formatRequestDataForCURL() in src/future/http/HTTPSFuture.php	57	14	0
public function isReady() in src/future/http/HTTPFuture.php	47	14	0