Enum ConstValue 

pub enum ConstValue<'db> {
    Int(BigInt, TypeId<'db>),
    Struct(Vec<ConstValueId<'db>>, TypeId<'db>),
    Enum(ConcreteVariant<'db>, ConstValueId<'db>),
    NonZero(ConstValueId<'db>),
    Generic(GenericParamId<'db>),
    ImplConstant(ImplConstantId<'db>),
    Var(ConstVar<'db>, TypeId<'db>),
    Missing(DiagnosticAdded),
}

A constant value.

Variants

Int(BigInt, TypeId<'db>)

Struct(Vec<ConstValueId<'db>>, TypeId<'db>)

Enum(ConcreteVariant<'db>, ConstValueId<'db>)

NonZero(ConstValueId<'db>)

Generic(GenericParamId<'db>)

ImplConstant(ImplConstantId<'db>)

Var(ConstVar<'db>, TypeId<'db>)

Missing(DiagnosticAdded)

A missing value, used in cases where the value is not known due to diagnostics.

Implementations

impl<'db> ConstValue<'db>

pub fn is_fully_concrete(&self, db: &dyn Database) -> bool

Returns true if the const does not depend on any generics.

pub fn is_var_free(&self, db: &dyn Database) -> bool

Returns true if the const does not contain any inference variables.

pub fn ty(&self, db: &'db dyn Database) -> Maybe<TypeId<'db>>

Returns the type of the const.

pub fn to_int(&self) -> Option<&BigInt>

Returns the value of an int const as a BigInt.

Trait Implementations

impl<'db> Clone for ConstValue<'db>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'db> Debug for ConstValue<'db>

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

Formats the value using the given formatter.

impl<'db> DebugWithDb<'db> for ConstValue<'db>

type Db = dyn Database

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

fn debug<'me>(&'me self, db: &'db Self::Db) -> DebugWith<'me, 'db, Self::Db>

where Self: Sized + 'me,

fn into_debug<'me>(self, db: &'db Self::Db) -> DebugWith<'me, 'db, Self::Db>

where Self: Sized + 'me,

impl<'db> Hash for ConstValue<'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> Intern<'db, ConstValueId<'db>> for ConstValue<'db>

fn intern(self, db: &'db dyn Database) -> ConstValueId<'db>

impl<'db> PartialEq for ConstValue<'db>

fn eq(&self, other: &ConstValue<'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<TypeId<'db>, Error> + SemanticRewriter<Vec<ConstValueId<'db>>, Error> + SemanticRewriter<ConcreteVariant<'db>, Error> + SemanticRewriter<ConstValueId<'db>, Error> + SemanticRewriter<ImplConstantId<'db>, Error> + SemanticRewriter<ConstVar<'db>, Error>, Error> SemanticObject<T, Error> for ConstValue<'db>

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

impl<'db> SemanticRewriter<ConstValue<'db>, DiagnosticAdded> for SubstitutionRewriter<'db, '_>

fn internal_rewrite( &mut self, value: &mut ConstValue<'db>, ) -> Maybe<RewriteResult>

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

impl<'db, 'mt> SemanticRewriter<ConstValue<'db>, NoError> for Inference<'db, 'mt>

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

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

impl<'db> Update for ConstValue<'db>

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

Returns

impl<'db> Eq for ConstValue<'db>

impl<'db> StructuralPartialEq for ConstValue<'db>