Remove now un-used code

Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>

1 files changed, 0 insertions, 74 deletions

diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs
index ec2ca967ca5..afe77e766fa 100644
--- a/compiler/rustc_expand/src/base.rs
+++ b/compiler/rustc_expand/src/base.rs
@@ -1384,80 +1384,6 @@ pub fn resolve_path(sess: &Session, path: impl Into<PathBuf>, span: Span) -> PRe
     }
 }
 
-pub fn parse_macro_name_and_helper_attrs(
-    dcx: DiagCtxtHandle<'_>,
-    attr: &impl AttributeExt,
-    macro_type: &str,
-) -> Option<(Symbol, Vec<Symbol>)> {
-    // Once we've located the `#[proc_macro_derive]` attribute, verify
-    // that it's of the form `#[proc_macro_derive(Foo)]` or
-    // `#[proc_macro_derive(Foo, attributes(A, ..))]`
-    let list = attr.meta_item_list()?;
-    let ([trait_attr] | [trait_attr, _]) = list.as_slice() else {
-        dcx.emit_err(errors::AttrNoArguments { span: attr.span() });
-        return None;
-    };
-    let Some(trait_attr) = trait_attr.meta_item() else {
-        dcx.emit_err(errors::NotAMetaItem { span: trait_attr.span() });
-        return None;
-    };
-    let trait_ident = match trait_attr.ident() {
-        Some(trait_ident) if trait_attr.is_word() => trait_ident,
-        _ => {
-            dcx.emit_err(errors::OnlyOneWord { span: trait_attr.span });
-            return None;
-        }
-    };
-
-    if !trait_ident.name.can_be_raw() {
-        dcx.emit_err(errors::CannotBeNameOfMacro {
-            span: trait_attr.span,
-            trait_ident,
-            macro_type,
-        });
-    }
-
-    let attributes_attr = list.get(1);
-    let proc_attrs: Vec<_> = if let Some(attr) = attributes_attr {
-        if !attr.has_name(sym::attributes) {
-            dcx.emit_err(errors::ArgumentNotAttributes { span: attr.span() });
-        }
-        attr.meta_item_list()
-            .unwrap_or_else(|| {
-                dcx.emit_err(errors::AttributesWrongForm { span: attr.span() });
-                &[]
-            })
-            .iter()
-            .filter_map(|attr| {
-                let Some(attr) = attr.meta_item() else {
-                    dcx.emit_err(errors::AttributeMetaItem { span: attr.span() });
-                    return None;
-                };
-
-                let ident = match attr.ident() {
-                    Some(ident) if attr.is_word() => ident,
-                    _ => {
-                        dcx.emit_err(errors::AttributeSingleWord { span: attr.span });
-                        return None;
-                    }
-                };
-                if !ident.name.can_be_raw() {
-                    dcx.emit_err(errors::HelperAttributeNameInvalid {
-                        span: attr.span,
-                        name: ident,
-                    });
-                }
-
-                Some(ident.name)
-            })
-            .collect()
-    } else {
-        Vec::new()
-    };
-
-    Some((trait_ident.name, proc_attrs))
-}
-
 /// If this item looks like a specific enums from `rental`, emit a fatal error.
 /// See #73345 and #83125 for more details.
 /// FIXME(#73933): Remove this eventually.