Module: RubyNext::Utils

Defined in:
lib/ruby-next/utils.rb

Class Method Summary collapse

Class Method Details

.refine_modules? ⇒ Boolean

Returns true if modules refinement is supported in current version

Returns:

  • (Boolean) 


16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/ruby-next/utils.rb', line 16

def refine_modules?
  save_verbose, $VERBOSE = $VERBOSE, nil
  @refine_modules ||=
    begin
      # Make sure that including modules within refinements works
      # See https://github.com/oracle/truffleruby/issues/2026
      eval <<~RUBY, TOPLEVEL_BINDING, __FILE__, __LINE__ + 1
        module RubyNext::Utils::A; end
        class RubyNext::Utils::B
          include RubyNext::Utils::A
        end

        using(Module.new do
          refine RubyNext::Utils::A do
            include(Module.new do
              def i_am_refinement
                "yes, you are!"
              end
            end)
          end
        end)

        RubyNext::Utils::B.new.i_am_refinement
      RUBY
      true
    rescue TypeError, NoMethodError
      false
    ensure
      $VERBOSE = save_verbose
    end
end

.source_with_lines(source, path) ⇒ Object 



7
8
9
10
11
12
13
 
# File 'lib/ruby-next/utils.rb', line 7

def source_with_lines(source, path)
  source.lines.map.with_index do |line, i|
    "#{(i + 1).to_s.rjust(4)}:  #{line}"
  end.tap do |lines|
    lines.unshift "   0:  # source: #{path}"
  end
end