Auto merge of rust-lang#78782 - petrochenkov:nodoctok, r=Aaron1011

Do not collect tokens for doc comments

Doc comment is a single token and AST has all the information to re-create it precisely.
Doc comments are also responsible for majority of calls to `collect_tokens` (with `num_calls == 1` and `num_calls == 0`, cc rust-lang#78736).

(I also moved token collection into `fn parse_attribute` to deduplicate code a bit.)

r? `@Aaron1011`

clippy_lints/src/attrs.rs

@@ -588,7 +588,7 @@ impl EarlyLintPass for EarlyAttributes {
 
 fn check_empty_line_after_outer_attr(cx: &EarlyContext<'_>, item: &rustc_ast::Item) {
     for attr in &item.attrs {
-        let attr_item = if let AttrKind::Normal(ref attr) = attr.kind {
+        let attr_item = if let AttrKind::Normal(ref attr, _) = attr.kind {
             attr
         } else {
             return;

clippy_lints/src/utils/ast_utils.rs

@@ -509,7 +509,7 @@ pub fn eq_attr(l: &Attribute, r: &Attribute) -> bool {
     l.style == r.style
         && match (&l.kind, &r.kind) {
             (DocComment(l1, l2), DocComment(r1, r2)) => l1 == r1 && l2 == r2,
-            (Normal(l), Normal(r)) => eq_path(&l.path, &r.path) && eq_mac_args(&l.args, &r.args),
+            (Normal(l, _), Normal(r, _)) => eq_path(&l.path, &r.path) && eq_mac_args(&l.args, &r.args),
             _ => false,
         }
 }

clippy_lints/src/utils/attrs.rs

@@ -57,7 +57,7 @@ pub fn get_attr<'a>(
     name: &'static str,
 ) -> impl Iterator<Item = &'a ast::Attribute> {
     attrs.iter().filter(move |attr| {
-        let attr = if let ast::AttrKind::Normal(ref attr) = attr.kind {
+        let attr = if let ast::AttrKind::Normal(ref attr, _) = attr.kind {
             attr
         } else {
             return false;

clippy_lints/src/utils/mod.rs

@@ -1349,7 +1349,7 @@ pub fn is_must_use_func_call(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
 
 pub fn is_no_std_crate(krate: &Crate<'_>) -> bool {
     krate.item.attrs.iter().any(|attr| {
-        if let ast::AttrKind::Normal(ref attr) = attr.kind {
+        if let ast::AttrKind::Normal(ref attr, _) = attr.kind {
             attr.path == symbol::sym::no_std
         } else {
             false