apache / arrow-rs - 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 5,793 units with 101,029 lines of code in units (58.7% of code).

1 very complex units (232 lines of code)
4 complex units (536 lines of code)
29 medium complex units (3,601 lines of code)
140 simple units (7,588 lines of code)
5,619 very simple units (89,072 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
fn add_benchmark() in arrow/benches/filter_kernels.rs	232	57	1
fn add_benchmark() in arrow/benches/cast_kernels.rs	161	42	1
fn add_benchmark() in arrow/benches/sort_kernel.rs	136	37	1
fn add_benchmark() in arrow/benches/aggregate_kernels.rs	118	33	1
fn add_benchmark() in arrow/benches/take_kernels.rs	121	26	1
fn add_primitive_type() in parquet/src/schema/parser.rs	216	25	3
fn test_primitive_type() in parquet/src/schema/types.rs	302	23	0
fn read_from_in_protocol() in parquet/src/format.rs	139	20	1
fn add_benchmark() in arrow/benches/concatenate_kernel.rs	126	19	1
fn write_array_data() in arrow-ipc/src/writer.rs	210	19	9
fn criterion_benchmark() in arrow-ipc/benches/ipc_reader.rs	122	17	1
fn parse_e_notation() in arrow-cast/src/parse.rs	97	17	7
fn consume_batch() in parquet/src/arrow/array_reader/list_array.rs	90	17	1
fn consume_batch() in parquet/src/arrow/array_reader/fixed_size_list_array.rs	94	16	1
fn test_page_index_reader_all_type() in parquet/src/file/serialized_reader.rs	178	16	0
fn bench_primitive_writer() in parquet/benches/arrow_writer.rs	121	16	1
fn add_benchmark() in arrow/benches/arithmetic_kernels.rs	48	15	1
fn take_bytes() in arrow-select/src/take.rs	80	15	2
fn arrow_to_parquet_type() in parquet/src/arrow/schema/mod.rs	329	14	2
fn update_column_offset_index() in parquet/src/column/writer/mod.rs	74	13	3
fn write_to_out_protocol() in parquet/src/format.rs	86	13	2
fn read_field() in parquet/src/record/reader.rs	64	13	1
fn apply() in arrow-ord/src/cmp.rs	46	13	7
fn parse_word() in arrow-schema/src/datatype_parse.rs	109	12	1
fn next() in parquet/src/arrow/arrow_reader/mod.rs	65	12	1
fn write_mini_batch() in parquet/src/column/writer/mod.rs	67	12	7
fn read_next() in parquet/src/record/triplet.rs	48	12	1
fn logical_nulls() in arrow-array/src/array/union_array.rs	93	11	1
def relabel_issue() in dev/release/label_issues.py	28	11	2
fn parse_date() in arrow-cast/src/parse.rs	71	11	1
fn call() in arrow-flight/src/arrow.flight.protocol.rs	481	11	2
fn compare_greater_byte_array_decimals() in parquet/src/column/writer/mod.rs	28	11	2
fn get_next_page() in parquet/src/file/serialized_reader.rs	111	11	1
fn fmt() in parquet/src/record/api.rs	78	11	2
fn validate_child_data() in arrow-data/src/data.rs	100	10	1
fn string_apply + 'a>() in arrow-string/src/like.rs	49	10	7
fn benchmark() in arrow/benches/buffer_create.rs	36	10	1
fn try_new_impl() in arrow-array/src/record_batch.rs	58	10	3
fn update() in arrow-csv/src/reader/mod.rs	15	10	2
fn from_str() in arrow-cast/src/parse.rs	44	10	1
fn test_optional_to_writer_snippet() in parquet_derive/src/parquet_field.rs	71	10	0
fn flush_block_values() in parquet/src/encodings/encoding/mod.rs	42	10	1
fn test_list_selection_fuzz() in parquet/src/arrow/arrow_reader/mod.rs	98	10	0
fn visit_list() in parquet/src/arrow/schema/complex.rs	104	10	3
fn write_to_out_protocol() in parquet/src/format.rs	54	10	2
fn write_to_out_protocol() in parquet/src/format.rs	57	10	2
fn write_to_out_protocol() in parquet/src/format.rs	59	10	2
fn bitwise_array_benchmark() in arrow/benches/bitwise_kernel.rs	39	9	1
fn create_array() in arrow-ipc/src/reader.rs	145	9	3
fn set_data() in parquet/src/encodings/decoding.rs	52	9	3