class RuboCop::Cop::Style::AsciiIdentifiers

This cop checks for non-ascii characters in indentifier names.

def investigate(processed_source) 

def investigate(processed_source)
  processed_source.tokens.each do |t|
    next unless t.type == :tIDENTIFIER && !t.text.ascii_only?
    add_offense(nil, t.pos)
  end
end