class RubyLsp::Requests::SelectionRanges

The selection ranges request informs the editor of ranges that the user may want to select based on the location(s) of their cursor(s).

Trigger this request with: Ctrl + Shift + -> or Ctrl + Shift + <-

Note that if using VSCode Neovim, you will need to be in Insert mode for this to work correctly.

Example¶ ↑

def foo # --> The next selection range encompasses the entire method definition.
  puts "Hello, world!" # --> Cursor is on this line
end

Public Class Methods

new(document)

Calls superclass method

# File lib/ruby_lsp/requests/selection_ranges.rb, line 27
def initialize(document)
  super()
  @document = document
  @ranges = T.let([], T::Array[Support::SelectionRange])
  @stack = T.let([], T::Array[Support::SelectionRange])
end

Public Instance Methods

perform()

# File lib/ruby_lsp/requests/selection_ranges.rb, line 35
def perform
  # [node, parent]
  queue = [[@document.tree, nil]]

  until queue.empty?
    node, parent = queue.shift
    next unless node

    range = Support::SelectionRange.new(range: range_from_location(node.location), parent: parent)
    T.unsafe(queue).unshift(*node.child_nodes.map { |child| [child, range] })
    @ranges.unshift(range)
  end

  @ranges
end