hhvm / hack-router
Conditional Complexity

The distribution of complexity of units (measured with McCabe index).

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).
Learn more...
Conditional Complexity Overall
  • There are 100 units with 890 lines of code in units (77.7% of code).
    • 0 very complex units (0 lines of code)
    • 0 complex units (0 lines of code)
    • 1 medium complex units (82 lines of code)
    • 3 simple units (121 lines of code)
    • 96 very simple units (687 lines of code)
0% | 0% | 9% | 13% | 77%
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
php0% | 0% | 9% | 13% | 77%
Conditional Complexity per Logical Component
primary logical decomposition
51+
26-50
11-25
6-10
1-5
router/PrefixMatching0% | 0% | 50% | 0% | 49%
router0% | 0% | 0% | 39% | 60%
PatternParser0% | 0% | 0% | 26% | 73%
request-parameters0% | 0% | 0% | 0% | 100%
uri-patterns0% | 0% | 0% | 0% | 100%
http-exceptions0% | 0% | 0% | 0% | 100%
Most Complex Units
Top 50 most complex units
Unit# linesMcCabe index# params
82 13 2
47 9 2
48 6 1
26 6 0
46 5 1
26 5 0
30 4 0
17 4 1
19 4 2
11 3 1
22 3 3
9 3 0
13 3 1
11 2 2
10 2 1
6 2 0
8 2 0
17 2 3
7 2 0
7 2 1
10 2 2
11 2 1
16 2 1
6 2 0
3 1 0
27 1 3
3 1 2
3 1 2
2 1 1
8 1 0
3 1 0
3 1 0
3 1 0
4 1 1
4 1 0
3 1 0
3 1 1
3 1 0
6 1 1
6 1 1
3 1 1
6 1 2
12 1 3
11 1 2
11 1 2
15 1 3
8 1 2
6 1 2
3 1 0
4 1 1