azure / SAI.msft - 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 2,633 units with 80,605 lines of code in units (80.9% of code).

7 very complex units (1,340 lines of code)
13 complex units (1,802 lines of code)
111 medium complex units (8,551 lines of code)
202 simple units (11,974 lines of code)
2,300 very simple units (56,938 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
sub CheckHeadersStyle() in meta/style.pm	312	101	0
void check_attr_default_required() in meta/saisanitycheck.c	160	92	1
void check_attr_object_type_provided() in meta/saisanitycheck.c	99	82	1
void check_attr_is_primitive() in meta/saisanitycheck.c	99	82	1
void check_attr_acl_fields() in meta/saisanitycheck.c	133	80	1
void convert_attr_thrift_to_sai() in meta/sai_rpc_frontend.cpp	385	76	3
void check_attr_validonly() in meta/saisanitycheck.c	152	64	1
void convert_attr_sai_to_thrift() in meta/sai_rpc_frontend.cpp	248	46	3
def readOnlyAttributesTest() in ptf/saiswitch.py	362	43	1
void check_attr_default_value_type() in meta/saisanitycheck.c	99	41	1
void check_attr_allow_flags() in meta/saisanitycheck.c	81	39	1
void check_attr_conditions() in meta/saisanitycheck.c	107	34	1
void ExpressionConverter::postorder() in flexsai/p4/backend/json_stage/expression.cpp	149	33	1
void check_non_object_id_object_types() in meta/saisanitycheck.c	115	32	0
sub ProcessEnumSection() in meta/parse.pl	163	29	0
sub ProcessStructValueType() in meta/parse.pl	33	28	0
def dynamicMacLearnTest() in ptf/saifdb.py	197	27	1
void ControlConverter::convertTableEntries() in flexsai/p4/backend/json_stage/control.cpp	107	27	2
def run() in flexsai/p4/backend/json_stage/bmv2stf.py	83	27	1
void check_attr_enums() in meta/saisanitycheck.c	58	26	1
def main() in flexsai/p4/backend/json_stage/run-bmv2-test.py	76	24	1
void check_attr_existing_objects() in meta/saisanitycheck.c	64	24	1
sub CheckFunctionsParams() in meta/style.pm	77	23	0
sub ProcessType() in meta/parse.pl	79	22	0
sub ProcessEnumInitializers() in meta/utils.pm	127	22	0
void check_object_ro_list() in meta/saisanitycheck.c	58	21	1
void check_objects_for_loops_recursive() in meta/saisanitycheck.c	80	20	4
def lagMemberActivateFloodTest() in ptf/sailag.py	84	19	1
bool ControlConverter::preorder() in flexsai/p4/backend/json_stage/control.cpp	70	19	1
def set() in flexsai/p4/backend/json_stage/bmv2stf.py	38	19	3
int main_wrapper() in flexsai/p4/backend/json_stage/sai.cpp	93	19	2
sub ProcessConditionsGeneric() in meta/parse.pl	108	19	0
sub ExtractStructInfoEx() in meta/xmlutils.pm	82	19	0
void check_attr_allowed_object_types() in meta/saisanitycheck.c	58	19	1
void check_acl_table_fields_and_acl_entry_fields() in meta/saisanitycheck.c	85	19	0
void check_attr_key() in meta/saisanitycheck.c	33	18	1
def hash_to_hash_fields() in ptf/saihash.py	26	17	1
def lagIPv6PacketTest() in ptf/saihash.py	64	17	2
def checkOutputs() in flexsai/p4/backend/json_stage/bmv2stf.py	41	17	1
sub CheckInOutParams() in meta/style.pm	35	17	0
void check_object_infos() in meta/saisanitycheck.c	86	17	0
def runTest() in ptf/saiqueue.py	188	16	1
def l3IPv4LagPacketTest() in ptf/saihash.py	62	16	4
def l3IPv4EcmpPacketTest() in ptf/saihash.py	94	16	4
sub CheckHash() in meta/checkheaders.pl	44	16	0
void check_all_enums_values() in meta/saisanitycheck.c	76	16	0
void check_attr_flags() in meta/saisanitycheck.c	58	16	1
def l3IPv6EcmpPacketTest() in ptf/saihash.py	72	15	2
void ConvertHeaders::addTypesAndInstances() in flexsai/p4/backend/json_stage/header.cpp	64	15	2
sub CheckDoxygenCommentFormating() in meta/style.pm	62	15	0