use crate::coercion::DynamicCoerceMany;
use crate::gather_locals::GatherLocalsVisitor;
use rustc_data_structures::unord::UnordSet;
-use rustc_errors::{struct_span_err, ErrorGuaranteed, MultiSpan};
+use rustc_errors::{struct_span_err, DiagnosticId, ErrorGuaranteed, MultiSpan};
use rustc_hir as hir;
-use rustc_hir::def::Res;
+use rustc_hir::def::{DefKind, Res};
use rustc_hir::intravisit::Visitor;
use rustc_hir::{HirIdMap, Node};
use rustc_hir_analysis::astconv::AstConv;
res: Res,
qpath: &hir::QPath<'_>,
span: Span,
+ err_code: &str,
+ expected: &str,
) -> ErrorGuaranteed {
- struct_span_err!(
- tcx.sess,
+ let res_descr = match res {
+ Res::Def(DefKind::Variant, _) => "struct variant",
+ _ => res.descr(),
+ };
+ let path_str = rustc_hir_pretty::qpath_to_string(qpath);
+ let mut err = tcx.sess.struct_span_err_with_code(
span,
- E0533,
- "expected unit struct, unit variant or constant, found {} `{}`",
- res.descr(),
- rustc_hir_pretty::qpath_to_string(qpath),
- )
+ format!("expected {expected}, found {res_descr} `{path_str}`"),
+ DiagnosticId::Error(err_code.into()),
+ );
+ match res {
+ Res::Def(DefKind::Fn | DefKind::AssocFn, _) if err_code == "E0164" => {
+ let patterns_url = "https://doc.rust-lang.org/book/ch18-00-patterns.html";
+ err.span_label(span, "`fn` calls are not allowed in patterns");
+ err.help(format!("for more information, visit {patterns_url}"))
+ }
+ _ => err.span_label(span, format!("not a {expected}")),
+ }
.emit()
}