refac: remove procedures for linting inside macros

Author: koka831

clippy_lints/src/undocumented_unsafe_blocks.rs

@@ -340,11 +340,7 @@ fn block_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool {
     // ```
     // won't work. This is to avoid dealing with where such a comment should be place relative to
     // attributes and doc comments.
-
-    matches!(
-        span_from_macro_expansion_has_safety_comment(cx, span),
-        HasSafetyComment::Yes(_)
-    ) || span_in_body_has_safety_comment(cx, span)
+    span_in_body_has_safety_comment(cx, span)
 }
 
 enum HasSafetyComment {
@@ -356,11 +352,6 @@ enum HasSafetyComment {
 /// Checks if the lines immediately preceding the item contain a safety comment.
 #[allow(clippy::collapsible_match)]
 fn item_has_safety_comment(cx: &LateContext<'_>, item: &hir::Item<'_>) -> HasSafetyComment {
-    match span_from_macro_expansion_has_safety_comment(cx, item.span) {
-        HasSafetyComment::Maybe => (),
-        has_safety_comment => return has_safety_comment,
-    }
-
     if item.span.ctxt() != SyntaxContext::root() {
         return HasSafetyComment::No;
     }
@@ -420,11 +411,6 @@ fn item_has_safety_comment(cx: &LateContext<'_>, item: &hir::Item<'_>) -> HasSaf
 /// Checks if the lines immediately preceding the item contain a safety comment.
 #[allow(clippy::collapsible_match)]
 fn stmt_has_safety_comment(cx: &LateContext<'_>, span: Span, hir_id: HirId) -> HasSafetyComment {
-    match span_from_macro_expansion_has_safety_comment(cx, span) {
-        HasSafetyComment::Maybe => (),
-        has_safety_comment => return has_safety_comment,
-    }
-
     if span.ctxt() != SyntaxContext::root() {
         return HasSafetyComment::No;
     }
@@ -490,42 +476,6 @@ fn comment_start_before_item_in_mod(
     })
 }
 
-fn span_from_macro_expansion_has_safety_comment(cx: &LateContext<'_>, span: Span) -> HasSafetyComment {
-    let source_map = cx.sess().source_map();
-    let ctxt = span.ctxt();
-    if ctxt == SyntaxContext::root() {
-        HasSafetyComment::Maybe
-    } else {
-        // From a macro expansion. Get the text from the start of the macro declaration to start of the
-        // unsafe block.
-        //     macro_rules! foo { () => { stuff }; (x) => { unsafe { stuff } }; }
-        //     ^--------------------------------------------^
-        if let Ok(unsafe_line) = source_map.lookup_line(span.lo())
-            && let Ok(macro_line) = source_map.lookup_line(ctxt.outer_expn_data().def_site.lo())
-            && Lrc::ptr_eq(&unsafe_line.sf, &macro_line.sf)
-            && let Some(src) = unsafe_line.sf.src.as_deref()
-        {
-            unsafe_line.sf.lines(|lines| {
-                if macro_line.line < unsafe_line.line {
-                    match text_has_safety_comment(
-                        src,
-                        &lines[macro_line.line + 1..=unsafe_line.line],
-                        unsafe_line.sf.start_pos.to_usize(),
-                    ) {
-                        Some(b) => HasSafetyComment::Yes(b),
-                        None => HasSafetyComment::No,
-                    }
-                } else {
-                    HasSafetyComment::No
-                }
-            })
-        } else {
-            // Problem getting source text. Pretend a comment was found.
-            HasSafetyComment::Maybe
-        }
-    }
-}
-
 fn get_body_search_span(cx: &LateContext<'_>) -> Option<Span> {
     let body = cx.enclosing_body?;
     let map = cx.tcx.hir();