class RuboCop::AST::HashElementNode::HashElementDelta

def delimiter_delta
  return 0 if first.same_line?(second)
  return 0 if first.delimiter != second.delimiter
  delta(first.loc.operator, second.loc.operator)
end

def delta(first, second, alignment = :left)
  case alignment
  when :left
    first.column - second.column
  when :right
    first.last_column - second.last_column
  else
    0
  end
end

def initialize(first, second)
  @first = first
  @second = second
  raise ArgumentError unless valid_argument_types?
end

def key_delta(alignment = :left)
  return 0 if first.same_line?(second)
  return 0 if keyword_splat? && alignment == :right
  delta(first.key.loc, second.key.loc, alignment)
end

def keyword_splat?
  [first, second].any?(&:kwsplat_type?)
end

def valid_argument_types?
  [first, second].all? do |argument|
    argument.pair_type? || argument.kwsplat_type?
  end
end

def value_delta
  return 0 if first.same_line?(second)
  return 0 if keyword_splat?
  delta(first.value.loc, second.value.loc)
end