Refactoring in Crystal

rename.cr

class Foo
  def foo(x)
    # Rename this call from "bar" to "baz":
    # What other things change in this file?
    #
    # According to what's called, Bar#bar needs
    # to change. But what about Baz#bar? I can
    # also pass Baz.new to Foo.new.foo. There's
    # no way to tell if that should be renamed too.
    #
    # Renaming based on usage isn't correct. The
    # only solution to this is to make all methods
    # have mandatory argument types, and return
    # types. Then you'll know for sure what needs
    # to be renamed.
    x.bar(1)
  end
end

class Bar
  def bar(x)
  end
end

class Baz
  def bar(x)
  end
end

Foo.new.foo(Bar.new)

Well, I guess I can add at least basic rename support 👍 , see: crystal-lang-tools/scry#101 (comment)