class RubyLsp::Requests::PrepareRename

# request checks the validity of a rename operation at a given location.<br>(microsoft.github.io/language-server-protocol/specification#textDocument_prepareRename)
The

def initialize(document, position)

: (RubyDocument document, Hash[Symbol, untyped] position) -> void 
def initialize(document, position)
  super()
  @document = document
  @position = position #: Hash[Symbol, Integer]
end

def perform

: -> Interface::Range?
@override 
def perform
  char_position, _ = @document.find_index_by_position(@position)
  node_context = RubyDocument.locate(
    @document.ast,
    char_position,
    node_types: [Prism::ConstantReadNode, Prism::ConstantPathNode, Prism::ConstantPathTargetNode],
    code_units_cache: @document.code_units_cache,
  )
  target = node_context.node
  parent = node_context.parent
  return if !target || target.is_a?(Prism::ProgramNode)
  if target.is_a?(Prism::ConstantReadNode) && parent.is_a?(Prism::ConstantPathNode)
    target = determine_target(
      target,
      parent,
      @position,
    )
  end
  range_from_location(target.location)
end