module Prism
  class Pattern
    class CompilationError < StandardError
    end

    attr_reader query: String

    def initialize: (String query) -> void
    def compile: () -> Proc
    def scan: (Prism::node root) { (Prism::node) -> void } -> void
            | (Prism::node root) -> ::Enumerator[Prism::node, void]
  end
end