打印 Ruby 块的源代码

本文介绍了打印 Ruby 块的源代码的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个接受块的方法.

I have a method that takes a block.

显然我不知道要传入什么，出于奇怪的原因，我不会进入这里，我想打印块的内容.

Obviously I don't know what is going to be passed in and for bizarre reasons that I won't go into here I want to print the contents of the block.

有没有办法做到这一点?

Is there a way to do this?

推荐答案

您可以使用实现 to_ruby 方法的 Ruby2Ruby 来做到这一点.

You can do this with Ruby2Ruby which implements a to_ruby method.

require 'rubygems'
require 'parse_tree'
require 'parse_tree_extensions'
require 'ruby2ruby'

def meth &block
  puts block.to_ruby
end

meth { some code }

将输出:

"proc { some(code) }"

我也会看看 Github 的 Chris Wanstrath 的精彩演讲 http://goruco2008.confreaks.com/03_wanstrath.html 他展示了一些有趣的 ruby2ruby 和解析树用法示例.

I would also check out this awesome talk by Chris Wanstrath of Github http://goruco2008.confreaks.com/03_wanstrath.html He shows some interesting ruby2ruby and parsetree usage examples.

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