Rollup merge of #101021 - MingyuChen1:diagnostic, r=davidtwco

[rust.git] / compiler / rustc_middle / src / ty / mod.rs

diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs
index 1312a1467968af7ca888ce3d20a38616c68b881b..a3f7880b9a5684f3a044ea44218be79ec3aec958 100644 (file)
--- a/compiler/rustc_middle/src/ty/mod.rs
+++ b/compiler/rustc_middle/src/ty/mod.rs
@@ -15,6 +15,7 @@
 pub use self::BorrowKind::*;
 pub use self::IntVarValue::*;
 pub use self::Variance::*;
+use crate::error::{OpaqueHiddenTypeMismatch, TypeMismatchReason};
 use crate::metadata::ModChild;
 use crate::middle::privacy::AccessLevels;
 use crate::mir::{Body, GeneratorLayout};
@@ -1179,20 +1180,17 @@ pub struct OpaqueHiddenType<'tcx> {
 impl<'tcx> OpaqueHiddenType<'tcx> {
     pub fn report_mismatch(&self, other: &Self, tcx: TyCtxt<'tcx>) {
         // Found different concrete types for the opaque type.
-        let mut err = tcx.sess.struct_span_err(
-            other.span,
-            "concrete type differs from previous defining opaque type use",
-        );
-        err.span_label(other.span, format!("expected `{}`, got `{}`", self.ty, other.ty));
-        if self.span == other.span {
-            err.span_label(
-                self.span,
-                "this expression supplies two conflicting concrete types for the same opaque type",
-            );
+        let sub_diag = if self.span == other.span {
+            TypeMismatchReason::ConflictType { span: self.span }
         } else {
-            err.span_note(self.span, "previous use here");
-        }
-        err.emit();
+            TypeMismatchReason::PreviousUse { span: self.span }
+        };
+        tcx.sess.emit_err(OpaqueHiddenTypeMismatch {
+            self_ty: self.ty,
+            other_ty: other.ty,
+            other_span: other.span,
+            sub: sub_diag,
+        });
     }
 }