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) 


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# 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 "        module RubyNext::Utils::A; end\n        class RubyNext::Utils::B\n          include RubyNext::Utils::A\n        end\n\n        using(Module.new do\n          refine RubyNext::Utils::A do\n            include(Module.new do\n              def i_am_refinement\n                \"yes, you are!\"\n              end\n            end)\n          end\n        end)\n\n        RubyNext::Utils::B.new.i_am_refinement\n      RUBY\n      true\n    rescue TypeError, NoMethodError\n      false\n    ensure\n      $VERBOSE = save_verbose\n    end\nend\n", TOPLEVEL_BINDING, __FILE__, __LINE__ + 1

.source_with_lines(source, path) ⇒ Object 



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# 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