一个Ruby静态代码分析器：rubocop

这是一个Ruby静态代码分析器，基于社区Ruby编码风格指南Ruby Style Guide。除了报告代码中的问题，RuboCop还可以自动为你修复一些问题。

安装

RuboCop的安装是非常标准：

$ gem install rubocop

If you'd rather install RuboCop usingbundler, don't require it in yourGemfile:

gem 'rubocop', require: false

基本用法

不带参数运行rubocop会检查当前目录下的所有Ruby源文件：

$ rubocop

另外，您可以通过rubocop指定文件和目录进行检查：

$ rubocop app spec lib/something.rb

Here's RuboCop in action. Consider the following Ruby source code:

def badName if something      test end end

Running RuboCop on it (assuming it's in a file namedtest.rb) would produce the following report:

Inspecting 1 file  W    Offenses:    test.rb:1:5: C: Use snake_case for method names.  def badName      ^^^^^^^  test.rb:2:3: C: Use a guard clause instead of wrapping the code inside a conditional expression.    if something    ^^  test.rb:2:3: C: Favor modifier if usage when having a single-line body. Another good alternative is the usage of control flow &&/||.    if something    ^^  test.rb:4:5: W: end at 4, 4 is not aligned with if at 2, 2      end      ^^^    1 file inspected, 4 offenses detected

For more details check the available command-line options:

$ rubocop -h