Enum ConstValue

pub enum ConstValue {
    Int(BigInt, TypeId),
    Struct(Vec<ConstValue>, TypeId),
    Enum(ConcreteVariant, Box<ConstValue>),
    NonZero(Box<ConstValue>),
    Boxed(Box<ConstValue>),
    Generic(GenericParamId),
    ImplConstant(ImplConstantId),
    TraitConstant(TraitConstantId),
    Var(ConstVar, TypeId),
    Missing(DiagnosticAdded),
}

A constant value.

Variants

Int(BigInt, TypeId)

Struct(Vec<ConstValue>, TypeId)

Enum(ConcreteVariant, Box<ConstValue>)

NonZero(Box<ConstValue>)

Boxed(Box<ConstValue>)

Generic(GenericParamId)

ImplConstant(ImplConstantId)

TraitConstant(TraitConstantId)

Var(ConstVar, TypeId)

Missing(DiagnosticAdded)

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

Implementations

impl ConstValue

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

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

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

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

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

Returns the type of the const.

pub fn into_int(self) -> Option<BigInt>

Returns the value of an int const as a BigInt.

Trait Implementations

impl Clone for ConstValue

fn clone(&self) -> ConstValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConstValue

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

Formats the value using the given formatter.

impl<Db: ?Sized + Upcast<dyn SemanticGroup + 'static>> DebugWithDb<Db> for ConstValue

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

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

where Self: Sized + 'me,

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

where Self: Sized + 'me,

impl Hash for ConstValue

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<'a> Intern<'a, dyn SemanticGroup + 'a, ConstValueId> for ConstValue

fn intern( self, db: &(impl Upcast<dyn SemanticGroup + 'a> + ?Sized), ) -> ConstValueId

impl<'a> LookupIntern<'a, dyn SemanticGroup + 'a, ConstValue> for ConstValueId

fn lookup_intern( &self, db: &(impl Upcast<dyn SemanticGroup + 'a> + ?Sized), ) -> ConstValue

impl PartialEq for ConstValue

fn eq(&self, other: &ConstValue) -> 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<T: SemanticRewriter<TypeId, Error> + SemanticRewriter<Vec<ConstValue>, Error> + SemanticRewriter<ConcreteVariant, Error> + SemanticRewriter<Box<ConstValue>, Error> + SemanticRewriter<ImplConstantId, Error> + SemanticRewriter<TraitConstantId, Error> + SemanticRewriter<ConstVar, Error>, Error> SemanticObject<T, Error> for ConstValue

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

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

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

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

impl SemanticRewriter<ConstValue, NoError> for Inference<'_>

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

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

impl Eq for ConstValue

impl StructuralPartialEq for ConstValue