use span of fragments

Author: lucarlig

clippy_lints/src/doc/empty_docs.rs

@@ -1,17 +1,13 @@
+use super::EMPTY_DOCS;
 use clippy_utils::diagnostics::span_lint_and_help;
 use rustc_ast::Attribute;
 use rustc_lint::LateContext;
-
-use super::EMPTY_DOCS;
+use rustc_resolve::rustdoc::{attrs_to_doc_fragments, span_of_fragments};
 
 // TODO: Adjust the parameters as necessary
 pub(super) fn check(cx: &LateContext<'_>, attrs: &[Attribute]) {
-    let doc_attrs: Vec<_> = attrs.iter().filter(|attr| attr.doc_str().is_some()).collect();
-    let span;
-    if let Some(first) = doc_attrs.first()
-        && let Some(last) = doc_attrs.last()
-    {
-        span = first.span.with_hi(last.span.hi());
+    let (fragments, _) = attrs_to_doc_fragments(attrs.iter().map(|attr| (attr, None)), true);
+    if let Some(span) = span_of_fragments(&fragments) {
         span_lint_and_help(
             cx,
             EMPTY_DOCS,