変数名をキーにしてハッシュを作る

test.rb

def args_to_hash(*args)
  hash = {}
  path, line = caller.first.split(':')
  File.open(path) do |f|
    (line.to_i-1).times { f.readline }
    source = f.readline
    args_text = source[/args_to_hash\((.+)\)/, 1]
    keys = args_text.gsub(/\s/, "").split(',')
    keys.each_with_index do |key, i|
      hash[key.intern] = args[i]
    end
  end
  hash
end

a, b, c = 'hoge', 2, Time.new
p args_to_hash(a, b, c) # => {:a=>"hoge", :b=>2, :c=>2012-02-03 13:50:39 +0900}

p args_to_hash("hoge", 2, Time.now) # => {:"\"hoge\""=>"hoge", :"2"=>2, :"Time.now"=>2012-02-03 13:50:39 +0900}