class SyntaxTree::Begin

def ===(other)
  other.is_a?(Begin) && bodystmt === other.bodystmt
end

def accept(visitor)
  visitor.visit_begin(self)
end

def child_nodes
  [bodystmt]
end

def copy(bodystmt: nil, location: nil)
  node =
    Begin.new(
      bodystmt: bodystmt || self.bodystmt,
      location: location || self.location
    )
  node.comments.concat(comments.map(&:copy))
  node
end

def deconstruct_keys(_keys)
  { bodystmt: bodystmt, location: location, comments: comments }
end

def format(q)
  q.text("begin")
  unless bodystmt.empty?
    q.indent do
      q.breakable_force unless bodystmt.statements.empty?
      q.format(bodystmt)
    end
  end
  q.breakable_force
  q.text("end")
end

def initialize(bodystmt:, location:)
  @bodystmt = bodystmt
  @location = location
  @comments = []
end