gitlab-org / ruby-magic - 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).

Conditional Complexity Overall

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

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 37 most complex units

Unit	# lines	McCabe index	# params
flags_list in lib/magic.rb	13	7	1
flags_as_map in lib/magic.rb	11	4	0
process_recipe in ext/magic/extconf.rb	44	3	4
do_clean in ext/magic/extconf.rb	20	3	0
open in lib/magic.rb	13	2	1
power_of_two? in lib/magic.rb	3	2	1
static VALUE magic_generic_error() in ext/magic/ruby-magic.c	14	1	3
config_clean? in ext/magic/extconf.rb	3	1	0
config_static? in ext/magic/extconf.rb	4	1	0
config_cross_build? in ext/magic/extconf.rb	3	1	0
config_system_libraries? in ext/magic/extconf.rb	5	1	0
darwin? in ext/magic/extconf.rb	3	1	0
windows? in ext/magic/extconf.rb	3	1	0
truffle? in ext/magic/extconf.rb	3	1	0
concat_flags in ext/magic/extconf.rb	3	1	1
do_help in ext/magic/extconf.rb	4	1	0
version_array in lib/magic/version.rb	3	1	0
version_string in lib/magic/version.rb	3	1	0
magic in lib/magic/core/string.rb	3	1	1
mime in lib/magic/core/string.rb	3	1	0
type in lib/magic/core/string.rb	3	1	0
magic in lib/magic/core/file.rb	3	1	2
mime in lib/magic/core/file.rb	3	1	1
type in lib/magic/core/file.rb	3	1	1
magic in lib/magic/core/file.rb	3	1	0
mime in lib/magic/core/file.rb	3	1	0
type in lib/magic/core/file.rb	3	1	0
inspect in lib/magic.rb	3	1	0
flags_names in lib/magic.rb	3	1	0
mime in lib/magic.rb	3	1	1
type in lib/magic.rb	3	1	1
encoding in lib/magic.rb	3	1	1
compile in lib/magic.rb	3	1	1
check in lib/magic.rb	3	1	1
file in lib/magic.rb	3	1	2
buffer in lib/magic.rb	3	1	2
descriptor in lib/magic.rb	3	1	2