openai / retro - 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 12,314 units with 460,585 lines of code in units (122.7% of code).

83 very complex units (25,011 lines of code)
197 complex units (24,303 lines of code)
667 medium complex units (39,597 lines of code)
1,100 simple units (174,980 lines of code)
10,267 very simple units (196,694 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 CPU::process() in cores/gb/libgambatte/src/cpu.cpp	1124	543	1
void SMP::disassemble_opcode() in cores/snes/apu/bapu/smp/debugger/disassembler.cpp	287	265	2
bool8 S9xDoDMA() in cores/snes/dma.cpp	913	209	1
int Thumbulator::execute() in cores/atari2600/stella/src/emucore/Thumbulator.cxx	1316	200	1
void S9xSetPPU() in cores/snes/ppu.cpp	669	182	2
s9xcommand_t S9xGetCommandT() in cores/snes/controls.cpp	352	177	1
bool TIA::poke() in cores/atari2600/stella/src/emucore/TIA.cxx	617	175	2
void S9xApplyCommand() in cores/snes/controls.cpp	569	169	3
int sdl_input_update() in cores/genesis/gcw0/main.c	371	159	1
static int gcw0menu() in cores/genesis/gcw0/main.c	949	147	1
static void wpad_update() in cores/genesis/gx/gx_input.c	289	147	3
uint16_t GBAIORead() in cores/gba/src/gba/io.c	198	146	2
void Memory::nontrivial_ff_write() in cores/gb/libgambatte/src/gambatte-memory.cpp	398	144	3
void DSP1SetByte() in cores/snes/dsp1.cpp	481	141	2
size_t lexExpression() in cores/gba/src/debugger/parser.c	282	132	4
int cdd_load() in cores/genesis/core/cd_hw/cdd.c	565	130	2
int S9xUnfreezeFromStream() in cores/snes/snapshot.cpp	329	130	1
bool CDAccess_Image::ImageOpen() in cores/pce/mednafen/cdrom/CDAccess_Image.cpp	496	129	2
void DiStella::disasm() in cores/atari2600/stella/src/debugger/DiStella.cxx	529	125	2
static void pad_update() in cores/genesis/gx/gx_input.c	186	120	2
void S9xSetSA1() in cores/snes/sa1.cpp	260	114	2
static void ctrlmenu() in cores/genesis/gx/gui/menu.c	611	113	1
void GBIOWrite() in cores/gba/src/gb/io.c	305	108	3
static void systemmenu() in cores/genesis/gx/gui/menu.c	324	103	0
void CheatMenu() in cores/genesis/gx/gui/cheats.c	427	97	1
static void debug_whats_used() in cores/snes/debug.cpp	280	97	1
static void debug_process_command() in cores/snes/debug.cpp	384	96	1
static void vdp_reg_w() in cores/genesis/core/vdp_ctrl.c	424	93	3
void S9xSetCPU() in cores/snes/ppu.cpp	281	93	2
int FileSelector() in cores/genesis/gx/gui/filesel.c	451	92	1
void VDC_RunFrame() in cores/pce/mednafen/pce_fast/vdc.cpp	240	90	2
void TIATables::buildMxMaskTable() in cores/atari2600/stella/src/emucore/TIATables.cxx	125	87	0
void ssp1601_run() in cores/genesis/core/cart_hw/svp/ssp16.c	190	86	1
void GBAIOWrite() in cores/gba/src/gba/io.c	219	84	3
void CompuMate::update() in cores/atari2600/stella/src/emucore/CompuMate.cxx	135	82	0
static void check_variables() in cores/genesis/libretro/libretro.c	380	81	1
static void videomenu() in cores/genesis/gx/gui/menu.c	411	80	0
void TIATables::buildPxPosResetWhenTable() in cores/atari2600/stella/src/emucore/TIATables.cxx	103	77	0
int load_rom() in cores/genesis/core/loadrom.c	323	77	1
void CMemory::InitROM() in cores/snes/memmap.cpp	314	75	1
uint32_t SCSICD_Run() in cores/pce/mednafen/cdrom/scsicd.cpp	210	75	1
uint8 S9xGetPPU() in cores/snes/ppu.cpp	234	73	1
static void check_variables() in cores/pce/libretro.cpp	187	73	1
static void check_variables() in cores/nes/src/drivers/libretro/libretro.c	197	72	1
void GUI_DrawMenuFX() in cores/genesis/gx/gui/gui.c	220	72	3
static void GBVideoSoftwareRendererDrawObj() in cores/gba/src/gb/renderers/software.c	141	72	5
void SPC7110::mmio_write() in cores/snes/spc7110emu.cpp	213	72	2
static uint16_t GBAVideoSoftwareRendererWriteVideoRegister() in cores/gba/src/gba/renderers/video-software.c	234	71	3
uint8_t GBIORead() in cores/gba/src/gb/io.c	97	71	2
int sdl_input_update() in cores/genesis/sdl/sdl1/main.c	140	69	1