Rubygem如何需要所有宝石？ [英] How does Rubygem require all gems?

问题描述

我对Rubygem感兴趣，并开始研究它是如何工作的，并且发现1.9之后，Rubygem的 require 变成了 require 。

使用下面的代码：

  require'debugger'
 debugger 
 require'thor'
  

我开始 n 和 l 和 s ，但陷入：

 ＃specification.rb：263 
 def self._all＃：nodoc：
除非已定义？（ @@ all）&& @@ all then 
 specs = {} 
 
 self.dirs.each {| dir | 
 Dir [File.join（dir，* .gemspec）]。each {| path | 
 spec = Gem :: Specification.load path.untaint 
＃如果spec不好，返回nil，所以我们在这个阶段忽略
＃it 
 specs [spec .full_name] || = spec if spec 
} 
} 
 
 @@ all = specs.values 
 
 _resort！ 
 end 
 @@ all 
 end 
  

进入上面的方法， @@ all 已经准备好了。然后，我在任何地方设置了断点 @@ all = ，但没有任何一个断点可以达到。

我错过了什么？

---

编辑：

再看看我的问题。请参阅 require'debugger'？我感觉就像一个傻瓜。

现在问题是我如何调试 require ？

---

已关闭：

Plz看到这个很好的答案： https://stackoverflow.com/a/16069229/342366

解决方案

Thx再次为此问候答案： https：

对于一些Google来说这个问题（和懒惰的调试），我决定发布Rubygem如何要求所有宝石？的答案。

下面是关键步骤：

1. 在Ruby193 \lib\ruby\gems\1.9.1\specifications中加载所有.gemspec
   
   

     Dir [File.join（dir，* .gemspec）]。each {| path | 
    spec = Gem :: Specification.load path.untaint 
   ＃如果spec不好，返回nil，所以我们在这个阶段忽略
   ＃it 
    specs [spec .full_name] || = spec if spec 
   } 
     




2. 版本desc

     @@ all.sort！ {| a，b | 
    names = a.name< => b.name 
    next names如果names.nonzero？ 
    b.version< => a.version 
   } 
     




3. 获得了第一个gem（更高版本）

     self.find {| spec | 
    spec.contains_requirable_file？路径
   } 
     




4. 激活gem和所有依赖关系〜大家都很开心。 p>

I got interested in Rubygem, and started to explore how does it works, and found out that after 1.9, Rubygem's require became THE require.

With the code below:

require 'debugger'
debugger
require 'thor'

I started to n and l and s, but got stuck at:

  # specification.rb:263
  def self._all # :nodoc:
    unless defined?(@@all) && @@all then
      specs = {}

      self.dirs.each { |dir|
        Dir[File.join(dir, "*.gemspec")].each { |path|
          spec = Gem::Specification.load path.untaint
          # #load returns nil if the spec is bad, so we just ignore
          # it at this stage
          specs[spec.full_name] ||= spec if spec
        }
      }

      @@all = specs.values

      _resort!
    end
    @@all
  end

It seems that before stepping into the method above, @@all has already be been prepared. Then I set break-points everywhere @@all =, but none of the break-points are reached.

What am i missing???

---

EDIT:

Look at my question again. See require 'debugger'? I feel like a fool.

Now the question is "How can I debug require"?

---

CLOSED:

Plz see this great answer:https://stackoverflow.com/a/16069229/342366

解决方案

Thx again for this greet answer:https://stackoverflow.com/a/16069229/342366, i did a little debugging myself.

For some one google to this question(and lazy to debug), i decide to post the answer to "How does Rubygem require all gems?"

There are the key-steps below:

1. load all ".gemspec" in "Ruby193\lib\ruby\gems\1.9.1\specifications"

   Dir[File.join(dir, "*.gemspec")].each { |path|
     spec = Gem::Specification.load path.untaint
     # #load returns nil if the spec is bad, so we just ignore
     # it at this stage
     specs[spec.full_name] ||= spec if spec
   }
   

2. sort the gems by version desc

   @@all.sort! { |a, b|
     names = a.name <=> b.name
     next names if names.nonzero?
     b.version <=> a.version
   }
   

3. got the first gem (the higher version)

   self.find { |spec|
     spec.contains_requirable_file? path
   }
   

4. activate the gem and all dependencies~ Everyone's happy.

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