pub fn external_crate_str(&mut self, span: Span, name: &str, num: ast::CrateNum) {
let lo_loc = self.span.sess.codemap().lookup_char_pos(span.lo);
self.record_without_span(ExternalCrate,
pub fn external_crate_str(&mut self, span: Span, name: &str, num: ast::CrateNum) {
let lo_loc = self.span.sess.codemap().lookup_char_pos(span.lo);
self.record_without_span(ExternalCrate,