Struct rustc_hir_typeck::cast::CastCheck

pub struct CastCheck<'tcx> {
    expr: &'tcx Expr<'tcx>,
    expr_ty: Ty<'tcx>,
    expr_span: Span,
    cast_ty: Ty<'tcx>,
    cast_span: Span,
    span: Span,
    pub constness: Constness,
}

Reifies a cast check to be checked once we have full type information for a function context.

Fields

expr: &'tcx Expr<'tcx>

The expression whose value is being casted

expr_ty: Ty<'tcx>

The source type for the cast expression

expr_span: Span

cast_ty: Ty<'tcx>

The target type. That is, the type we are casting to.

cast_span: Span

span: Span

constness: Constness

whether the cast is made in a const context or not.

Implementations

impl<'a, 'tcx> CastCheck<'tcx>

pub fn new( fcx: &FnCtxt<'a, 'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: Ty<'tcx>, cast_ty: Ty<'tcx>, cast_span: Span, span: Span, constness: Constness ) -> Result<CastCheck<'tcx>, ErrorGuaranteed>

fn report_cast_error(&self, fcx: &FnCtxt<'a, 'tcx>, e: CastError)

fn report_cast_to_unsized_type(&self, fcx: &FnCtxt<'a, 'tcx>) -> ErrorGuaranteed

fn trivial_cast_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

pub fn check(self, fcx: &FnCtxt<'a, 'tcx>)

pub fn do_check(&self, fcx: &FnCtxt<'a, 'tcx>) -> Result<CastKind, CastError>

Checks a cast, and report an error if one exists. In some cases, this can return Ok and create type errors in the fcx rather than returning directly. coercion-cast is handled in check instead of here.

fn check_ptr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx>, m_cast: TypeAndMut<'tcx> ) -> Result<CastKind, CastError>

fn check_fptr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_cast: TypeAndMut<'tcx> ) -> Result<CastKind, CastError>

fn check_ptr_addr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx> ) -> Result<CastKind, CastError>

fn check_ref_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx>, m_cast: TypeAndMut<'tcx> ) -> Result<CastKind, CastError>

fn check_addr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_cast: TypeAndMut<'tcx> ) -> Result<CastKind, CastError>

fn try_coercion_cast( &self, fcx: &FnCtxt<'a, 'tcx> ) -> Result<(), TypeError<'tcx>>

fn cenum_impl_drop_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

fn lossy_provenance_ptr2int_lint(&self, fcx: &FnCtxt<'a, 'tcx>, t_c: IntTy)

fn fuzzy_provenance_int2ptr_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

fn try_suggest_collection_to_bool( &self, fcx: &FnCtxt<'a, 'tcx>, err: &mut Diagnostic )

Attempt to suggest using .is_empty when trying to cast from a collection type to a boolean.

Trait Implementations

impl<'tcx> Debug for CastCheck<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 56 bytes