JetBrains / skia 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 36,870 units with 460,816 lines of code in units (60.9% of code).

59 very complex units (19,485 lines of code)
256 complex units (28,013 lines of code)
1,308 medium complex units (79,668 lines of code)
2,603 simple units (83,243 lines of code)
32,644 very simple units (250,407 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
void Program::Dumper::dump() in src/sksl/codegen/SkSLRasterPipelineBuilder.cpp	793	622	2
bool GrGLInterface::validate() in src/gpu/ganesh/gl/GrGLInterfaceAutogen.cpp	670	505	0
void GrGLCaps::initFormatTable() in src/gpu/ganesh/gl/GrGLCaps.cpp	1637	298	3
func() in infra/bots/gen_tasks_logic/dm_flags.go	1183	295	1
void GrGLCaps::init() in src/gpu/ganesh/gl/GrGLCaps.cpp	582	240	3
void GrGLCaps::applyDriverCorrectnessWorkarounds() in src/gpu/ganesh/gl/GrGLCaps.cpp	479	203	5
bool VulkanInterface::validate() in src/gpu/vk/VulkanInterface.cpp	232	191	3
void Viewer::drawImGui() in tools/viewer/Viewer.cpp	870	169	0
void Program::makeStages() in src/sksl/codegen/SkSLRasterPipelineBuilder.cpp	580	121	4
void SkPicturePlayback::handleOp() in src/core/SkPicturePlayback.cpp	563	109	5
func() in infra/bots/gen_tasks_logic/nano_flags.go	313	101	1
SPIRVCodeGenerator::Intrinsic SPIRVCodeGenerator::getIntrinsic() in src/sksl/codegen/SkSLSPIRVCodeGenerator.cpp	149	92	1
static void fuzz_canvas() in fuzz/FuzzCanvas.cpp	495	90	3
static std::unique_ptr optimize_intrinsic_call() in src/sksl/ir/SkSLFunctionCall.cpp	341	90	5
std::string WGSLCodeGenerator::assembleIntrinsicCall() in src/sksl/codegen/SkSLWGSLCodeGenerator.cpp	221	90	3
static GrGLRenderer get_renderer() in src/gpu/ganesh/gl/GrGLUtil.cpp	191	90	2
bool skcms_Transform() in modules/skcms/skcms.cc	252	90	9
void SkTSect::BinarySearch() in src/pathops/SkPathOpsTSect.cpp	288	88	3
sk_sp GrGLMakeAssembledGLESInterface() in src/gpu/ganesh/gl/GrGLAssembleGLESInterfaceAutogen.cpp	406	85	2
func file_src_main_protobuf_build_proto_init() in bazel/exporter/build_proto/build/build.pb.go	338	81	0
std::unique_ptr SkSwizzler::Make() in src/codec/SkSwizzler.cpp	325	80	5
SkCodec::Result SkBmpCodec::ReadHeader() in src/codec/SkBmpCodec.cpp	304	79	3
sk_sp GrGLMakeAssembledGLInterface() in src/gpu/ganesh/gl/GrGLAssembleGLInterfaceAutogen.cpp	419	79	2
void SkOpCoincidence::debugAddOrOverlap() in src/pathops/SkPathOpsDebug.cpp	110	75	8
bool Generator::pushBinaryExpression() in src/sksl/codegen/SkSLRasterPipelineCodeGenerator.cpp	181	73	3
bool SkImageShader::appendStages() in src/shaders/SkImageShader.cpp	232	73	2
bool MetalCodeGenerator::writeIntrinsicCall() in src/sksl/codegen/SkSLMetalCodeGenerator.cpp	409	72	2
void GrTextureEffect::Impl::emitCode() in src/gpu/ganesh/effects/GrTextureEffect.cpp	284	72	1
Result CodecSrc::draw() in dm/DMSrcSink.cpp	268	69	2
bool AddIntersectTs() in src/pathops/SkAddIntersections.cpp	316	68	3
void VarDeclaration::ErrorCheck() in src/sksl/ir/SkSLVarDeclarations.cpp	153	65	8
void TextWrapper::moveForward() in modules/skparagraph/src/TextWrapper.cpp	254	64	1
def get_compile_flags() in infra/bots/recipe_modules/build/default.py	225	64	4
bool SkScalerContext_DW::drawColorV1Paint() in src/ports/SkScalerContext_win_dw.cpp	395	63	3
int main() in bench/nanobench.cpp	282	63	2
bool SkPixmap::computeIsOpaque() in src/core/SkPixmap.cpp	164	61	0
bool SkOpCoincidence::addOrOverlap() in src/pathops/SkOpCoincidence.cpp	121	61	7
static std::unique_ptr fold_two_constants() in src/sksl/SkSLConstantFolder.cpp	113	60	6
void GLSLCodeGenerator::writeFunctionCall() in src/sksl/codegen/SkSLGLSLCodeGenerator.cpp	247	60	1
void Device::drawGeometry() in src/gpu/graphite/Device.cpp	192	60	7
bool Generator::pushIntrinsic() in src/sksl/codegen/SkSLRasterPipelineCodeGenerator.cpp	180	58	2
bool colrv1_configure_skpaint() in src/ports/SkFontHost_FreeType_common.cpp	332	57	5
static sk_sp make_fuzz_imageFilter() in fuzz/FuzzCanvas.cpp	257	56	2
bool SurfaceContext::internalWritePixels() in src/gpu/ganesh/SurfaceContext.cpp	180	56	4
int main() in tools/skdiff/skdiff_main.cpp	211	55	2
void SkPathWriter::assemble() in src/pathops/SkPathWriter.cpp	223	55	0
void onPrepareDraws() in src/gpu/ganesh/ops/DashOp.cpp	213	55	1
func() in infra/bots/gen_tasks_logic/gen_tasks_logic.go	276	55	1
FilterResult FilterResult::rescale() in src/core/SkImageFilterTypes.cpp	165	54	3
std::unique_ptr Swizzle::Convert() in src/sksl/ir/SkSLSwizzle.cpp	148	54	5