class RuboCop::NodePattern::Compiler

def run(node_var) 

def run(node_var)
  tokens = @string.scan(TOKEN)
  tokens.reject! { |token| token =~ /\A[\s,]+\Z/ } # drop whitespace
  @match_code = compile_expr(tokens, node_var, false)
  fail_due_to('unbalanced pattern') unless tokens.empty?
end