class Sorbet::Private::GemGeneratorTracepoint::Tracer

def self.install_tracepoints
  @class_tracepoint = TracePoint.new(:class) do |tp|
    module_created(tp.self)
  end
  @c_call_tracepoint = TracePoint.new(:c_call) do |tp|
    case tp.method_id
    when :require, :require_relative
      @context_stack << []
    end
  end
  @c_return_tracepoint = TracePoint.new(:c_return) do |tp|
    case tp.method_id
    when :require, :require_relative
      popped = @context_stack.pop
      next if popped.empty?
      path = $LOADED_FEATURES.last
      if tp.return_value != true # intentional true check
        next if popped.size == 1 && popped[0][:module].is_a?(LoadError)
        # warn("Unexpected: constants or methods were defined when #{tp.method_id} didn't return true; adding to #{path} instead")
      end
      # raise 'Unexpected: constants or methods were defined without a file added to $LOADED_FEATURES' if path.nil?
      # raise "Unexpected: #{path} is already defined in files" if files.key?(path)
      @files[path] ||= []
      @files[path] += popped
    # popped.each { |item| item[:path] = path }
    when :method_added, :singleton_method_added
      begin
        tp.disable
        singleton = tp.method_id == :singleton_method_added
        receiver = singleton ? Sorbet::Private::RealStdlib.real_singleton_class(tp.self) : tp.self
        methods = Sorbet::Private::RealStdlib.real_instance_methods(receiver, false) + Sorbet::Private::RealStdlib.real_private_instance_methods(receiver, false)
        set = @modules[Sorbet::Private::RealStdlib.real_object_id(receiver)] ||= Set.new
        added = methods.find { |m| !set.include?(m) }
        if added.nil?
          # warn("Warning: could not find method added to #{tp.self} at #{tp.path}:#{tp.lineno}")
          next
        end
        set << added
        method_added(tp.self, added, singleton)
      ensure
        tp.enable
      end
    end
  end
  @class_tracepoint.enable
  @c_call_tracepoint.enable
  @c_return_tracepoint.enable
end