mozilla / pdf.js - 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 4,837 units with 75,140 lines of code in units (44.6% of code).

16 very complex units (3,856 lines of code)
49 complex units (7,089 lines of code)
284 medium complex units (17,692 lines of code)
427 simple units (13,478 lines of code)
4,061 very simple units (33,025 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
function onKeyDown() in web/app.js	293	122	1
function getDocument() in src/display/api.js	267	96	1
checkAndRepair() in src/core/fonts.js	367	95	3
readNextChar() in src/core/ccitt.js	324	95	0
function parse() in src/core/font_renderer.js	354	65	1
markerLoop: while() in src/core/jpg.js	249	65	1
execute() in src/core/function.js	230	59	1
static parseDestDictionary() in src/core/catalog.js	190	59	5
function sanitizeTTProgram() in src/core/fonts.js	175	59	2
parseCharString() in src/core/cff_parser.js	193	58	4
parse() in src/core/xfa/formcalc_parser.js	189	58	1
async createImageData() in src/core/image.js	228	56	2
get viewerPreferences() in src/core/catalog.js	121	53	0
indexObjects() in src/core/xref.js	220	53	0
convert() in src/core/type1_parser.js	215	53	3
function readCmapTable() in src/core/fonts.js	241	52	4
render() in src/display/annotation_layer.js	288	50	0
async translateFont() in src/core/evaluator.js	253	49	10
preEvaluateFont() in src/core/evaluator.js	131	47	1
findDCTDecodeInlineStreamEnd() in src/core/parser.js	80	47	1
getObj() in src/core/parser.js	118	46	0
function compareWithLastPosition() in src/core/evaluator.js	172	45	1
async _initializeViewerComponents() in web/app.js	292	43	0
async buildPaintImageXObject() in src/core/evaluator.js	224	43	8
extractFontProgram() in src/core/type1_parser.js	143	42	1
constructor() in web/pdf_viewer.js	112	41	1
showText() in src/display/canvas.js	179	41	1
fallbackToSystemFont() in src/core/fonts.js	132	40	1
setupMessageHandler() in src/display/api.js	244	39	0
function() in src/scripting_api/util.js	118	37	6
async _getAppearance() in src/core/annotation.js	207	37	4
function checkDimensions() in src/core/xfa/layout.js	85	37	2
_bindElement() in src/core/xfa/bind.js	150	37	2
function decodeTextRegion() in src/core/jbig2.js	165	36	19
setDocument() in web/pdf_viewer.js	244	35	1
function decodeBitmap() in src/core/jbig2.js	136	35	8
setHash() in web/pdf_link_service.js	113	34	1
async setGState() in src/core/evaluator.js	110	34	10
async function() in src/core/worker.js	181	34	4
extractWidths() in src/core/evaluator.js	128	33	3
getString() in src/core/parser.js	98	33	0
async getPageDict() in src/core/catalog.js	99	32	1
hasBlendModes() in src/core/evaluator.js	93	32	2
constructor() in src/core/crypto.js	142	32	3
_getPageAdvance() in web/pdf_viewer.js	90	31	2
async save() in src/core/annotation.js	115	31	4
async getOperatorList() in src/core/document.js	169	31	8
async extractDataStructures() in src/core/evaluator.js	95	31	2
readBlock() in src/core/flate_stream.js	149	31	0
function createOS2Table() in src/core/fonts.js	108	31	3