AwesomePrint::Proc: inspecting Proc instances with source code (using Sourcify)

awesome_print_proc.rb

# = Awesome Print Proc Formatter
#
# Prints source when inspecting Proc object.
# Requires <tt>sourcify (>= 0.6.0.rc4)</tt> gem.

begin
  require "sourcify"
rescue LoadError
end

module AwesomePrint  
  module Proc
    def self.included(base)
      base.send :alias_method, :cast_without_proc, :cast
      base.send :alias_method, :cast, :cast_with_proc
    end

    # Add Proc class to the dispatcher pipeline.
    def cast_with_proc(object, type)
      if (type == :proc || object.is_a?(::Proc)) && object.respond_to?(:to_source)
        :proc
      else
        cast_without_proc(object, type)
      end
    end

    private

    # Format Proc object.
    def awesome_proc(object)
      if !@options[:raw] && (/\A(?<kw>proc)\s*(?<block_source>.+?)\z/ =~ object.to_source)
        kw = "->" if object.lambda?
        sprintf("%s %s", colorize(kw, :keyword), colorize(block_source, :string))
      else
        awesome_object(object)
      end
    end
  end
end

if defined?(Sourcify) && Sourcify::VERSION >= "0.6.0.rc4"
  AwesomePrint::Formatter.include(AwesomePrint::Proc)
end