Netflix/spectator-cpp
File Complexity*
The distribution of files by complexity: the sum of the McCabe indexes of their units.
File Complexity Overall
  • There are 27 files with units, with 1,255 lines of code.
    • 0 very complex files (McCabe index sum 251+; 0 lines of code)
    • 0 complex files (McCabe index sum 126-250; 0 lines of code)
    • 0 medium complex files (McCabe index sum 51-125; 0 lines of code)
    • 1 slightly complex files (McCabe index sum 26-50; 133 lines of code)
    • 26 simple files (McCabe index sum 1-25; 1,122 lines of code)
  • 10 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.
system0% | 0% | 0% | 10% | 89%
Legend:
251+
126-250
51-125
26-50
1-25


explore: grouped by folders | grouped by complexity
File Complexity per Extension
251+
126-250
51-125
26-50
1-25
cpp0% | 0% | 0% | 18% | 81%
h0% | 0% | 0% | 0% | 100%
File Complexity per Logical Decomposition
primary
251+
126-250
51-125
26-50
1-25
spectator0% | 0% | 0% | 68% | 31%
libs0% | 0% | 0% | 0% | 100%
Most Complex Files (Top 27)

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# unitsMcCabe index
(sum)		per 100
lines		most complex
unit
registry.cpp
in spectator
 133 24 31 23 4
writer.cpp
in libs/writer/writer_wrapper
 138 7 21 15 6
meter_id.cpp
in libs/meter/meter_id
 85 8 17 20 4
udp_writer.cpp
in libs/writer/writer_types/src
 91 4 15 16 4
uds_writer.cpp
in libs/writer/writer_types/src
 90 4 15 17 4
logger.h
in libs/logger
 73 8 12 16 2
util.cpp
in libs/utils/src
 52 3 11 21 7
config.cpp
in libs/config
 62 1 8 13 8
writer_config.cpp
in libs/writer/writer_config
 48 1 4 8 4
writer_types.h
in libs/writer/writer_types/include
 50 1 4 8 4
memory_writer.cpp
in libs/writer/writer_types/src
 25 3 3 12 1
gauge.h
in libs/meter/meter_types/include
 24 2 3 13 2
counter.h
in libs/meter/meter_types/include
 21 2 3 14 2
percentile_timer.h
in libs/meter/meter_types/include
 21 2 3 14 2
timer.h
in libs/meter/meter_types/include
 21 2 3 14 2
percentile_dist_summary.h
in libs/meter/meter_types/include
 25 2 3 12 2
dist_summary.h
in libs/meter/meter_types/include
 21 2 3 14 2
age_gauge.h
in libs/meter/meter_types/include
 23 3 3 13 1
monotonic_counter.h
in libs/meter/meter_types/include
 18 2 2 11 1
max_gauge.h
in libs/meter/meter_types/include
 18 2 2 11 1
monotonic_counter_uint.h
in libs/meter/meter_types/include
 18 2 2 11 1
config.h
in libs/config
 23 1 1 4 1
writer_test_helper.h
in libs/writer/writer_wrapper
 13 1 1 8 1
writer.h
in libs/writer/writer_wrapper
 48 1 1 2 1
memory_writer.h
in libs/writer/writer_types/include
 20 1 1 5 1
meter.h
in libs/meter/meter_types/include
 34 1 1 3 1
registry.h
in spectator
 60 1 1 2 1
About This Analysis
  • 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.
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