use crate::base::ExtCtxt;
use crate::expand::{AstFragment, AstFragmentKind};
+use rustc_span::source_map::{dummy_spanned, DUMMY_SP};
use syntax::ast;
use syntax::mut_visit::*;
use syntax::ptr::P;
-use syntax::source_map::{dummy_spanned, DUMMY_SP};
use smallvec::{smallvec, SmallVec};