Enum TypeVar

pub enum TypeVar {
    Known(Loc<()>, KnownType, Vec<TypeVarID>),
    Unknown(Loc<()>, u64, TraitList, MetaType),
}

A type variable represents the type of something in the program. It is mapped to expressions by type equations in the TypeState.

When TypeVars are passed externally into TypeState, they must be checked for replacement, as the type inference process might have refined them.

Variants

Known(Loc<()>, KnownType, Vec<TypeVarID>)

The base type is known and has a list of parameters

Unknown(Loc<()>, u64, TraitList, MetaType)

The type is unknown, but must satisfy the specified traits. When the generic substitution is done, the TypeVars will be carried over to the KnownType type vars

Implementations

impl TypeVar

pub fn into_known(&self, type_state: &TypeState) -> Option<KnownTypeVar>

pub fn insert(self, into: &mut TypeState) -> TypeVarID

pub fn array(loc: Loc<()>, inner: TypeVarID, size: TypeVarID) -> Self

pub fn tuple(loc: Loc<()>, inner: Vec<TypeVarID>) -> Self

pub fn unit(loc: Loc<()>) -> Self

pub fn wire(loc: Loc<()>, inner: TypeVarID) -> Self

pub fn backward( loc: Loc<()>, inner: TypeVarID, type_state: &mut TypeState, ) -> Self

pub fn inverted(loc: Loc<()>, inner: TypeVarID) -> Self

pub fn expect_known<T, U, K, O>(&self, on_known: K, on_unknown: U) -> T

where U: FnOnce() -> T, K: FnOnce(&KnownType, &[TypeVarID]) -> T,

pub fn expect_named<T, E, U, K, O>( &self, on_named: K, on_unknown: U, on_other: O, on_error: E, ) -> T

where U: FnOnce() -> T, K: FnOnce(&NameID, &[TypeVarID]) -> T, E: FnOnce() -> T, O: FnOnce(&TypeVar) -> T,

pub fn resolve_named_or_inverted( &self, inverted_now: bool, type_state: &TypeState, ) -> ResolvedNamedOrInverted

Expect a named type, or TypeVar::Inverted(named), or a recursive inversion. inverted_now is stateful and used to track if we are currently in an inverted context.

pub fn expect_specific_named<T, U, K, O>( &self, name: NameID, on_correct: K, on_unknown: U, on_other: O, ) -> T

where U: FnOnce() -> T, K: FnOnce(&[TypeVarID]) -> T, O: FnOnce(&TypeVar) -> T,

pub fn expect_integer<T, E, U, K, O>( &self, on_integer: K, on_unknown: U, on_other: O, on_error: E, ) -> T

where U: FnOnce() -> T, E: FnOnce() -> T, K: FnOnce(BigInt) -> T, O: FnOnce(&TypeVar) -> T,

Assumes that this type is KnownType::Integer(size) and calls on_integer then. Otherwise calls on_unknown or on_other depending on the type. If the integer is given type params, panics

pub fn display(&self, type_state: &TypeState) -> String

pub fn display_with_meta( &self, display_meta: bool, type_state: &TypeState, ) -> String

Trait Implementations

impl Clone for TypeVar

fn clone(&self) -> TypeVar

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeVar

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TypeVar

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for TypeVar

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 Ord for TypeVar

fn cmp(&self, other: &TypeVar) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TypeVar

fn eq(&self, other: &TypeVar) -> 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 PartialOrd for TypeVar

fn partial_cmp(&self, other: &TypeVar) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for TypeVar

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl WithLocation for TypeVar

fn at(self, file_id: usize, span: &impl HasCodespan) -> Loc<Self>

where Self: Sized,

fn at_loc<T>(self, loc: &Loc<T>) -> Loc<Self>

Creates a new Loc from another Loc

fn between( self, file_id: usize, start: &impl HasCodespan, end: &impl HasCodespan, ) -> Loc<Self>

fn between_locs<T, Y>(self, start: &Loc<T>, end: &Loc<Y>) -> Loc<Self>

fn nowhere(self) -> Loc<Self>

where Self: Sized,

impl Eq for TypeVar

impl StructuralPartialEq for TypeVar