• There are 59 files with units, with 6,589 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 1 complex files (McCabe index sum 126-250; 272 lines of code)
• 5 medium complex files (McCabe index sum 51-125; 2,149 lines of code)
• 3 slightly complex files (McCabe index sum 26-50; 671 lines of code)
• 50 simple files (McCabe index sum 1-25; 3,497 lines of code)
• 10 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
generate_pyi.py in scripts	272	24	135	50	17
dispatch.hpp in deep_ep/include/deep_ep/impls/ep	686	3	106	15	82
bucket.py in deep_ep/buffers	246	20	79	32	18
combine.hpp in deep_ep/include/deep_ep/impls/ep	321	3	60	19	31
ep.py in deep_ep/buffers	389	16	59	15	13
dispatch_copy_epilogue.hpp in deep_ep/include/deep_ep/impls/ep	507	10	58	11	42
handle.hpp in deep_ep/include/deep_ep/comm	373	15	39	10	9
combine_utils.hpp in deep_ep/include/deep_ep/impls/ep	155	6	35	23	13
barrier.hpp in deep_ep/include/deep_ep/comm	143	5	32	22	12
refs.py in deep_ep/utils	135	4	25	19	11
hccl.hpp in csrc/kernels/comm	259	6	24	9	7
engram.py in deep_ep/buffers	108	8	23	21	8
combine_reduce_epilogue.hpp in deep_ep/include/deep_ep/impls/ep	141	2	21	15	18
gate.py in deep_ep/utils	101	7	21	21	8
jit.hpp in csrc/runtime	95	13	16	17	2
pp_send_recv.hpp in deep_ep/include/deep_ep/impls/pp	122	3	15	12	6
token.hpp in deep_ep/include/deep_ep/layout/ep	106	10	14	13	4
math.py in deep_ep/utils	49	7	14	29	4
handle.py in deep_ep/comm	41	7	13	32	3
reduction.hpp in deep_ep/include/deep_ep/common	67	8	12	18	4
event.py in deep_ep/utils	34	7	11	32	3
engram_fetch.hpp in deep_ep/include/deep_ep/impls/engram	122	1	10	8	10
bucket.hpp in csrc/buffers	128	2	10	8	7
pp.py in deep_ep/buffers	43	4	9	21	4
simt.hpp in deep_ep/include/deep_ep/common	42	5	9	21	3
envs.py in deep_ep/utils	51	6	9	18	3
ep.hpp in csrc/buffers	515	6	9	2	4
handle.hpp in csrc/comm	80	5	9	11	5
math.hpp in deep_ep/include/deep_ep/common	30	5	8	27	2
engram.hpp in csrc/buffers	178	3	8	4	5
base.hpp in csrc/buffers	48	4	8	17	3
base.py in deep_ep/buffers	17	4	6	35	2
allocator.py in deep_ep/buffers	25	3	6	24	4
workspace.hpp in deep_ep/include/deep_ep/layout/engram	29	5	6	21	2
urma.hpp in deep_ep/include/deep_ep/impls/bucket/all_gather	38	1	6	16	6
bitset.hpp in deep_ep/include/deep_ep/common	34	3	6	18	4
api.hpp in csrc/kernels/comm	87	5	6	7	2
pp.hpp in csrc/buffers	79	3	5	6	2
barrier.hpp in csrc/comm	25	1	5	20	5
stream.hpp in csrc/comm	22	4	5	23	2
workspace.hpp in deep_ep/include/deep_ep/layout/ep	52	3	3	6	1
dispatch.hpp in csrc/kernels/ep	119	3	3	3	1
combine.hpp in csrc/kernels/ep	94	3	3	3	1
all_gather.hpp in csrc/kernels/bucket	27	1	3	11	3
utils.hpp in deep_ep/include/deep_ep/common	31	1	2	6	2
barrier.py in deep_ep/comm	7	1	2	29	2
semantic.py in deep_ep/utils	3	1	2	67	2
pp_send_recv.hpp in csrc/kernels/pp	49	2	2	4	1
engram.hpp in csrc/kernels/engram	48	1	2	4	2
event.hpp in csrc/utils	18	2	2	11	1

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.