Struct rustc_trait_selection::traits::util::TraitAliasExpansionInfo

pub struct TraitAliasExpansionInfo<'tcx> {
    pub path: SmallVec<[(PolyTraitRef<'tcx>, Span); 4]>,
}

Stores information about the expansion of a trait via a path of zero or more trait aliases.

Fields

path: SmallVec<[(PolyTraitRef<'tcx>, Span); 4]>

Implementations

impl<'tcx> TraitAliasExpansionInfo<'tcx>

pub(in traits::util) fn new(
    trait_ref: PolyTraitRef<'tcx>,
    span: Span
) -> Self

pub fn label_with_exp_info(
    &self,
    diag: &mut DiagnosticBuilder<'_>,
    top_label: &str,
    use_desc: &str
)

Adds diagnostic labels to diag for the expansion path of a trait through all intermediate trait aliases.

pub fn trait_ref(&self) -> PolyTraitRef<'tcx>

pub fn top(&self) -> &(PolyTraitRef<'tcx>, Span)

pub fn bottom(&self) -> &(PolyTraitRef<'tcx>, Span)

pub(in traits::util) fn clone_and_push(
    &self,
    trait_ref: PolyTraitRef<'tcx>,
    span: Span
) -> Self

Trait Implementations

impl<'tcx> Clone for TraitAliasExpansionInfo<'tcx>

pub fn clone(&self) -> TraitAliasExpansionInfo<'tcx>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for TraitAliasExpansionInfo<'tcx>

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

Formats the value using the given formatter.