class SyntaxTree::OpAssign

def ===(other)
  other.is_a?(OpAssign) && target === other.target &&
    operator === other.operator && value === other.value
end

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

def child_nodes
  [target, operator, value]
end

def copy(target: nil, operator: nil, value: nil, location: nil)
  node =
    OpAssign.new(
      target: target || self.target,
      operator: operator || self.operator,
      value: value || self.value,
      location: location || self.location
    )
  node.comments.concat(comments.map(&:copy))
  node
end

def deconstruct_keys(_keys)
  {
    target: target,
    operator: operator,
    value: value,
    location: location,
    comments: comments
  }
end

def format(q)
  q.group do
    q.format(target)
    q.text(" ")
    q.format(operator)
    if skip_indent?
      q.text(" ")
      q.format(value)
    else
      q.indent do
        q.breakable_space
        q.format(value)
      end
    end
  end
end

def initialize(target:, operator:, value:, location:)
  @target = target
  @operator = operator
  @value = value
  @location = location
  @comments = []
end

def skip_indent?
  target.comments.empty? &&
    (target.is_a?(ARefField) || AssignFormatting.skip_indent?(value))
end