给定以下ruby文件foo.rb:
# this is a module comment
module A
# this is a constant comment
B = 'hi'
# this is a class comment
class C
# this is a method comment
# @param [String] name Who to say hi to
# @return [String]
def self.hi(name)
"#{B}, #{name}"
end
end
end
如何以编程方式获取与特定对象(例如
{A::C => 'this is a class comment'}
,{B => 'this is a constant comment'}
)相关联的注释?我希望
YARD.parse(File.read('/path/to/foo.rb'))
或YARD::Parser::SourceParser.parse(File.read('/path/to/foo.rb'))
能做些什么,但它们返回空数组。YARD::Parser::Ruby::RubyParser.parse(File.read('/path/to/foo.rb'))
返回一个似乎是ast的实例,但我希望避免编写ast遍历器(yard必须具有此功能才能构造html文档,但我还没有找到它)。(我正在使用院子v0.9.9,以防有用。)
最佳答案
所以,在玩了一点,并通过院子的来源,我可以理解院子是如何工作的。基本上,它会在YARD.parse
之后创建所有代码对象的注册表。我们可以这样访问它,
2.4.1 :033 > YARD.parse('./foo.rb')
=> []
2.4.1 :034 > YARD::Registry.all
=> [#<yardoc module A>, #<yardoc constant A::B>, #<yardoc class A::C>, #<yardoc method A::C.hi>]
2.4.1 :035 > code_objects = YARD::Registry.all.map {|object| {object.name => object.docstring} }.inject(&:merge)
{:A=>"this is a module comment", :B=>"this is a constant comment", :C=>"this is a class comment", :hi=>"this is a method comment"}
2.4.1 :036 > code_objects[:A]
=> "this is a module comment"
您应该能够使用它并根据需要转换为方法。
更多信息:https://github.com/lsegal/yard/blob/master/lib/yard/registry.rb#L225-L237