module RuboCop::Cop::VisibilityHelp

def find_visibility_end(node)
  possible_visibilities = VISIBILITY_SCOPES - ::Set[node_visibility(node)]
  right = node.right_siblings
  right.find do |child_node|
    possible_visibilities.include?(node_visibility(child_node))
  end || right.last
end

def find_visibility_start(node)
  node.left_siblings.reverse.find { |sibling| visibility_block?(sibling) }
end

def node_visibility(node)
  node_visibility_from_visibility_inline(node) ||
    node_visibility_from_visibility_block(node) ||
    :public
end

def node_visibility_from_visibility_block(node)
  find_visibility_start(node)&.method_name
end

def node_visibility_from_visibility_inline(node)
  return unless node.def_type?
  node_visibility_from_visibility_inline_on_def(node) ||
    node_visibility_from_visibility_inline_on_method_name(node)
end

def node_visibility_from_visibility_inline_on_def(node)
  parent = node.parent
  parent.method_name if visibility_inline_on_def?(parent)
end

def node_visibility_from_visibility_inline_on_method_name(node)
  node.right_siblings.reverse.find do |sibling|
    visibility_inline_on_method_name?(sibling, method_name: node.method_name)
  end&.method_name
end