一個Ruby靜態代碼分析器：rubocop

jopen 9年前發布 | 49K 次閱讀 rubocop 代碼分析/審查/優化


這是一個Ruby靜態代碼分析器，基于社區Ruby編碼風格指南Ruby Style Guide。除了報告代碼中的問題，RuboCop還可以自動為你修復一些問題。

安裝

RuboCop的安裝是非常標準： 

$ gem install rubocop

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

gem 'rubocop', require: false

基本用法

不帶參數運行rubocop會檢查當前目錄下的所有Ruby源文件： 

$ rubocop

另外，您可以通過rubocop指定文件和目錄進行檢查： 

$ 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</pre> 
For more details check the available command-line options: 


$ rubocop -h
 

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項目主頁：http://www.baiduhome.net/lib/view/home/1425792561610

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Command flag 
Description 




-v/--version 
Displays the current version and exits. 


-V/--verbose-version 
Displays the current version plus the version of Parser and Ruby. 


-F/--fail-fast 
Inspects in modification time order and stops after first file with offenses. 


-d/--debug 
Displays some extra debug output. 


-D/--display-cop-names 
Displays cop names in offense messages. 


-c/--config 
Run with specified config file. 


-f/--format 
Choose a formatter. 


-o/--out 
Write output to a file instead of STDOUT. 


-r/--require 
Require Ruby file (see Loading Extensions). 


-R/--rails 
Run extra Rails cops. 


-l/--lint 
Run only lint cops. 


-a/--auto-correct 
Auto-correct certain offenses. Note: Experimental - use with caution. 


--only 
Run only the specified cop(s) and/or cops in the specified departments. 


--except 
Run all cops enabled by configuration except the specified cop(s) and/or departments. 


--auto-gen-config 
Generate a configuration file acting as a TODO list. 


--show-cops 
Shows available cops and their configuration. 


--fail-level 
Minimum severity for exit with error code. Full severity name or upper case initial can be given. Normally, auto-corrected offenses are ignored. UseAorautocorrectif you'd like them to trigger failure. 
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