Introduce a prelude for very common imports across dozens of files

1 files changed, 4 insertions, 12 deletions

diff --git a/compiler/rustc_attr_parsing/src/attributes/macro_attrs.rs b/compiler/rustc_attr_parsing/src/attributes/macro_attrs.rs
index f0d14bb1a46..180130c7be4 100644
--- a/compiler/rustc_attr_parsing/src/attributes/macro_attrs.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/macro_attrs.rs
@@ -1,16 +1,8 @@
 use rustc_errors::DiagArgValue;
-use rustc_feature::{AttributeTemplate, template};
-use rustc_hir::Target;
-use rustc_hir::attrs::{AttributeKind, MacroUseArgs};
-use rustc_span::{Span, Symbol, sym};
-use thin_vec::ThinVec;
+use rustc_hir::attrs::MacroUseArgs;
 
-use crate::attributes::{AcceptMapping, AttributeParser, NoArgsAttributeParser, OnDuplicate};
-use crate::context::{AcceptContext, FinalizeContext, Stage};
-use crate::parser::ArgParser;
-use crate::session_diagnostics;
-use crate::target_checking::AllowedTargets;
-use crate::target_checking::Policy::{Allow, Error, Warn};
+use super::prelude::*;
+use crate::session_diagnostics::IllFormedAttributeInputLint;
 
 pub(crate) struct MacroEscapeParser;
 impl<S: Stage> NoArgsAttributeParser<S> for MacroEscapeParser {
@@ -110,7 +102,7 @@ impl<S: Stage> AttributeParser<S> for MacroUseParser {
                 }
                 ArgParser::NameValue(_) => {
                     let suggestions = MACRO_USE_TEMPLATE.suggestions(cx.attr_style, sym::macro_use);
-                    cx.emit_err(session_diagnostics::IllFormedAttributeInputLint {
+                    cx.emit_err(IllFormedAttributeInputLint {
                         num_suggestions: suggestions.len(),
                         suggestions: DiagArgValue::StrListSepByAnd(
                             suggestions.into_iter().map(|s| format!("`{s}`").into()).collect(),