class SyntaxTree::Parser

def on_backtick(value)

on_backtick: (String value) -> Backtick
:call-seq: 
def on_backtick(value)
  node =
    Backtick.new(
      value: value,
      location:
        Location.token(
          line: lineno,
          char: char_pos,
          column: current_column,
          size: value.size
        )
    )
  tokens << node
  node
end