diff options
Diffstat (limited to 'compiler/rustc_hir_analysis/src/structured_errors')
| -rw-r--r-- | compiler/rustc_hir_analysis/src/structured_errors/sized_unsized_cast.rs | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/compiler/rustc_hir_analysis/src/structured_errors/sized_unsized_cast.rs b/compiler/rustc_hir_analysis/src/structured_errors/sized_unsized_cast.rs deleted file mode 100644 index 9e871ff9af0..00000000000 --- a/compiler/rustc_hir_analysis/src/structured_errors/sized_unsized_cast.rs +++ /dev/null @@ -1,56 +0,0 @@ -use crate::{errors, structured_errors::StructuredDiag}; -use rustc_errors::{codes::*, Diag}; -use rustc_middle::ty::{Ty, TypeVisitableExt}; -use rustc_session::Session; -use rustc_span::Span; - -pub struct SizedUnsizedCast<'tcx> { - pub sess: &'tcx Session, - pub span: Span, - pub expr_ty: Ty<'tcx>, - pub cast_ty: String, -} - -impl<'tcx> StructuredDiag<'tcx> for SizedUnsizedCast<'tcx> { - fn session(&self) -> &Session { - self.sess - } - - fn code(&self) -> ErrCode { - E0607 - } - - fn diagnostic_common(&self) -> Diag<'tcx> { - let mut err = self.sess.dcx().create_err(errors::CastThinPointerToFatPointer { - span: self.span, - expr_ty: self.expr_ty, - cast_ty: self.cast_ty.to_owned(), - }); - - if self.expr_ty.references_error() { - err.downgrade_to_delayed_bug(); - } - - err - } - - fn diagnostic_extended(&self, mut err: Diag<'tcx>) -> Diag<'tcx> { - err.help( - "Thin pointers are \"simple\" pointers: they are purely a reference to a -memory address. - -Fat pointers are pointers referencing \"Dynamically Sized Types\" (also -called DST). DST don't have a statically known size, therefore they can -only exist behind some kind of pointers that contain additional -information. Slices and trait objects are DSTs. In the case of slices, -the additional information the fat pointer holds is their size. - -To fix this error, don't try to cast directly between thin and fat -pointers. - -For more information about casts, take a look at The Book: -https://doc.rust-lang.org/reference/expressions/operator-expr.html#type-cast-expressions", - ); - err - } -} |
