ABCGo

ABC metrics for Go source code.

Definition

ABCGo uses these rules to calculate ABC:

• Add one to the assignment count when:
  • Occurrence of an assignment operator: =, *=, /=, %=, +=, <<=, >>=, &=, ^=.
  • Occurrence of an increment or a decrement operator: ++, --.
• Add one to branch count when:
  • Occurrence of a function call.
• Add one to condition count when:
  • Occurrence of a conditional operator: <, >, <=, >=, ==, !=.
  • Occurrence of the following keywords: else, case.

Final score is calculated as follows:

Read more about ABC metrics.

Getting Started

Installation

$ go get -u github.com/droptheplot/abcgo
$ (cd $GOPATH/src/github.com/droptheplot/abcgo && go install)

Usage

Single file

$ abcgo -path main.go
Source       Func   Score   A   B    C
main.go:28   init   9       1   8    5
main.go:54   main   13      5   13   1

Directory

$ abcgo -path ./
Source            Func            Score   A   B    C
main.go:28        init            9       1   8    5
main.go:54        main            13      5   13   1
main_test.go:54   TestSomething   9       0   9    2

JSON

$ abcgo -path main.go -format json
[
  {
    "path": "main.go",
    "line": 54,
    "name": "main",
    "assignment": 5,
    "branch": 13,
    "condition": 1,
    "score": 13
  },
  {
    "path": "main.go",
    "line": 54,
    "name": "init",
    "assignment": 1,
    "branch": 8,
    "condition": 5,
    "score": 9
  }
]

Raw

(source, line, function name, score)

$ abcgo -path main.go -format raw
main.go 28 init 9
main.go 54 main 13
main_test.go 54 TestSomething 9

Summary

$ abcgo -path ./ -format summary
                   A    B    C
Project summary:   22   43   15

Options

• -path [path] - Path to file or directory.
• -format [format] - Output format (table (default), raw or json).
• -sort - Sort functions by score.
• -no-test - Skip *_test.go files.

Plugins

• Vim