gitlab-org / pg_query - 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 515 units with 12,958 lines of code in units (12.2% of code).

9 very complex units (2,197 lines of code)
9 complex units (1,164 lines of code)
40 medium complex units (2,684 lines of code)
66 simple units (2,129 lines of code)
391 very simple units (4,784 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
static void deparseStmt() in ext/pg_query/pg_query_deparse.c	335	110	2
static void deparseAlterTableCmd() in ext/pg_query/pg_query_deparse.c	324	102	3
static void deparseCommentStmt() in ext/pg_query/pg_query_deparse.c	237	88	2
static void deparseRenameStmt() in ext/pg_query/pg_query_deparse.c	243	82	2
static void deparseDropStmt() in ext/pg_query/pg_query_deparse.c	235	81	2
static bool planstate_walk_subplans() in ext/pg_query/src_backend_nodes_nodeFuncs.c	304	74	2
load_tables_and_aliases! in lib/pg_query/parse.rb	160	72	0
static void deparseAlterExtensionContentsStmt() in ext/pg_query/pg_query_deparse.c	169	59	2
static void deparseTypeName() in ext/pg_query/pg_query_deparse.c	190	55	2
static void deparseAExpr() in ext/pg_query/pg_query_deparse.c	201	50	3
static void deparseSelectStmt() in ext/pg_query/pg_query_deparse.c	160	47	2
static void deparseConstraint() in ext/pg_query/pg_query_deparse.c	192	47	2
static void deparseCopyStmt() in ext/pg_query/pg_query_deparse.c	165	43	2
static void deparseAlterRoleElem() in ext/pg_query/pg_query_deparse.c	92	35	2
filter_columns in lib/pg_query/filter_columns.rb	69	35	0
static void deparsePrivilegeTarget() in ext/pg_query/pg_query_deparse.c	120	28	4
static void deparseAlterObjectSchemaStmt() in ext/pg_query/pg_query_deparse.c	118	28	2
fingerprint_node in lib/pg_query/fingerprint.rb	47	28	4
static void deparseCommonFuncOptItem() in ext/pg_query/pg_query_deparse.c	67	25	2
static void deparseDefineStmt() in ext/pg_query/pg_query_deparse.c	76	25	2
static void deparseAlterOwnerStmt() in ext/pg_query/pg_query_deparse.c	114	25	2
PgQuerySplitResult pg_query_split_with_scanner() in ext/pg_query/pg_query_split.c	121	24	1
static void deparseExpr() in ext/pg_query/pg_query_deparse.c	80	24	2
static void deparseSecLabelStmt() in ext/pg_query/pg_query_deparse.c	107	24	2
static void deparseSeqOptElem() in ext/pg_query/pg_query_deparse.c	73	23	2
static void deparseWindowDef() in ext/pg_query/pg_query_deparse.c	88	22	2
static void deparseCreateTrigStmt() in ext/pg_query/pg_query_deparse.c	96	22	2
static void deparseJoinExpr() in ext/pg_query/pg_query_deparse.c	58	21	2
static void deparseBoolExpr() in ext/pg_query/pg_query_deparse.c	43	20	2
static void deparseIndexElem() in ext/pg_query/pg_query_deparse.c	65	19	2
static void deparseFuncCall() in ext/pg_query/pg_query_deparse.c	69	19	2
static void deparseXmlExpr() in ext/pg_query/pg_query_deparse.c	85	19	2
typedef void() in ext/pg_query/src_backend_utils_adt_ruleutils.c	211	18	1
static void deparseCreateStmt() in ext/pg_query/pg_query_deparse.c	81	18	3
find_possible_truncations in lib/pg_query/truncate.rb	31	18	0
static bool const_record_walker() in ext/pg_query/pg_query_normalize.c	68	17	2
static void deparseSQLValueFunction() in ext/pg_query/pg_query_deparse.c	55	17	2
static void deparseTransactionModeList() in ext/pg_query/pg_query_deparse.c	45	16	2
static void deparseTypeCast() in ext/pg_query/pg_query_deparse.c	54	16	2
static int yy_get_next_buffer() in ext/pg_query/src_backend_parser_scan.c	88	15	1
static void deparseRangeFunction() in ext/pg_query/pg_query_deparse.c	61	14	2
static void deparseVariableSetStmt() in ext/pg_query/pg_query_deparse.c	61	14	2
static void deparseVacuumStmt() in ext/pg_query/pg_query_deparse.c	51	14	2
static void deparseRuleStmt() in ext/pg_query/pg_query_deparse.c	56	14	2
PgQueryScanResult pg_query_scan() in ext/pg_query/pg_query_scan.c	103	13	1
static void deparseCExpr() in ext/pg_query/pg_query_deparse.c	49	13	2
static void deparseDefArg() in ext/pg_query/pg_query_deparse.c	46	13	3
static void deparseCreateFunctionStmt() in ext/pg_query/pg_query_deparse.c	56	13	2
static void deparseTransactionStmt() in ext/pg_query/pg_query_deparse.c	51	13	2
static void deparseGrantStmt() in ext/pg_query/pg_query_deparse.c	42	12	2