Enum Ambiguity 

pub enum Ambiguity<'db> {
    MultipleImplsFound {
        concrete_trait_id: ConcreteTraitId<'db>,
        impls: Vec<ImplId<'db>>,
    },
    FreeVariable {
        impl_id: ImplId<'db>,
        var: InferenceVar,
    },
    WillNotInfer(ConcreteTraitId<'db>),
    NegativeImplWithUnresolvedGenericArgs {
        impl_id: ImplId<'db>,
        ty: TypeId<'db>,
    },
    NegativeImplWithUnresolvedGenericArgs2 {
        concrete_trait_id: ConcreteTraitId<'db>,
        ty: TypeId<'db>,
    },
}

Describes the kinds of inference ambiguities.

Variants

MultipleImplsFound

Fields

concrete_trait_id: ConcreteTraitId<'db>

impls: Vec<ImplId<'db>>

FreeVariable

Fields

impl_id: ImplId<'db>

var: InferenceVar

WillNotInfer(ConcreteTraitId<'db>)

NegativeImplWithUnresolvedGenericArgs

Fields

impl_id: ImplId<'db>

ty: TypeId<'db>

NegativeImplWithUnresolvedGenericArgs2

Fields

concrete_trait_id: ConcreteTraitId<'db>

ty: TypeId<'db>

Implementations

impl<'db> Ambiguity<'db>

pub fn format(&self, db: &dyn Database) -> String

Trait Implementations

impl<'db> Clone for Ambiguity<'db>

fn clone(&self) -> Ambiguity<'db>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'db> Debug for Ambiguity<'db>

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

Formats the value using the given formatter.

impl<'db> Hash for Ambiguity<'db>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'db> PartialEq for Ambiguity<'db>

fn eq(&self, other: &Ambiguity<'db>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'db, T: SemanticRewriter<ConcreteTraitId<'db>, Error> + SemanticRewriter<Vec<ImplId<'db>>, Error> + SemanticRewriter<ImplId<'db>, Error> + SemanticRewriter<TypeId<'db>, Error>, Error> SemanticObject<T, Error> for Ambiguity<'db>

fn default_rewrite(&mut self, rewriter: &mut T) -> Result<RewriteResult, Error>

impl<'a, 'mt> SemanticRewriter<Ambiguity<'a>, NoError> for Inference<'a, 'mt>

fn internal_rewrite( &mut self, value: &mut Ambiguity<'a>, ) -> Result<RewriteResult, NoError>

fn rewrite(&mut self, value: T) -> Result<T, Error>

impl<'db> Update for Ambiguity<'db>

unsafe fn maybe_update(old_pointer_: *mut Self, new_value_: Self) -> bool

Returns

impl<'db> Eq for Ambiguity<'db>

impl<'db> StructuralPartialEq for Ambiguity<'db>