use rustc_expand::base::{self, DummyResult};
+use rustc_span::symbol::Symbol;
use syntax::ast;
-use syntax::symbol::Symbol;
use syntax::tokenstream::TokenStream;
use std::string::String;
pub fn expand_concat(
cx: &mut base::ExtCtxt<'_>,
- sp: syntax_pos::Span,
+ sp: rustc_span::Span,
tts: TokenStream,
) -> Box<dyn base::MacResult + 'static> {
let es = match base::get_exprs_from_tts(cx, sp, tts) {