1 files changed, 10 insertions, 5 deletions
diff --git a/compiler/rustc_ast/src/attr/mod.rs b/compiler/rustc_ast/src/attr/mod.rs
index 80caf37d709..b14367aa1c2 100644
--- a/compiler/rustc_ast/src/attr/mod.rs
+++ b/compiler/rustc_ast/src/attr/mod.rs
@@ -5,10 +5,11 @@ use crate::ast::{AttrId, AttrItem, AttrKind, AttrStyle, Attribute};
 use crate::ast::{Lit, LitKind};
 use crate::ast::{MacArgs, MacDelimiter, MetaItem, MetaItemKind, NestedMetaItem};
 use crate::ast::{Path, PathSegment};
-use crate::token::{self, CommentKind, Token};
+use crate::token::{self, CommentKind, Delimiter, Token};
 use crate::tokenstream::{AttrAnnotatedTokenStream, AttrAnnotatedTokenTree};
 use crate::tokenstream::{DelimSpan, Spacing, TokenTree, TreeAndSpacing};
 use crate::tokenstream::{LazyTokenStream, TokenStream};
+use crate::util::comments;
 
 use rustc_index::bit_set::GrowableBitSet;
 use rustc_span::source_map::BytePos;
@@ -262,6 +263,10 @@ impl Attribute {
         }
     }
 
+    pub fn may_have_doc_links(&self) -> bool {
+        self.doc_str().map_or(false, |s| comments::may_have_doc_links(s.as_str()))
+    }
+
     pub fn get_normal_item(&self) -> &AttrItem {
         match self.kind {
             AttrKind::Normal(ref item, _) => item,
@@ -508,7 +513,7 @@ impl MetaItemKind {
                 vec![
                     TokenTree::Delimited(
                         DelimSpan::from_single(span),
-                        token::Paren,
+                        Delimiter::Parenthesis,
                         TokenStream::new(tokens),
                     )
                     .into(),
@@ -535,7 +540,7 @@ impl MetaItemKind {
         tokens: &mut impl Iterator<Item = TokenTree>,
     ) -> Option<MetaItemKind> {
         match tokens.next() {
-            Some(TokenTree::Delimited(_, token::NoDelim, inner_tokens)) => {
+            Some(TokenTree::Delimited(_, Delimiter::Invisible, inner_tokens)) => {
                 MetaItemKind::name_value_from_tokens(&mut inner_tokens.trees())
             }
             Some(TokenTree::Token(token)) => {
@@ -560,7 +565,7 @@ impl MetaItemKind {
         tokens: &mut iter::Peekable<impl Iterator<Item = TokenTree>>,
     ) -> Option<MetaItemKind> {
         match tokens.peek() {
-            Some(TokenTree::Delimited(_, token::Paren, inner_tokens)) => {
+            Some(TokenTree::Delimited(_, Delimiter::Parenthesis, inner_tokens)) => {
                 let inner_tokens = inner_tokens.clone();
                 tokens.next();
                 MetaItemKind::list_from_tokens(inner_tokens)
@@ -601,7 +606,7 @@ impl NestedMetaItem {
                 tokens.next();
                 return Some(NestedMetaItem::Literal(lit));
             }
-            Some(TokenTree::Delimited(_, token::NoDelim, inner_tokens)) => {
+            Some(TokenTree::Delimited(_, Delimiter::Invisible, inner_tokens)) => {
                 let inner_tokens = inner_tokens.clone();
                 tokens.next();
                 return NestedMetaItem::from_tokens(&mut inner_tokens.into_trees().peekable());