Enum Ty 

pub enum Ty {
    Var(TyVar),
    Con(TyCon),
    Prim(PrimTy),
    App(Box<Ty>, Box<Ty>),
    Fun(Box<Ty>, Box<Ty>),
    Tuple(Vec<Ty>),
    List(Box<Ty>),
    Forall(Vec<TyVar>, Box<Ty>),
    Error,
    Nat(TyNat),
    TyList(TyList),
}

The main type representation in BHC.

Types are represented as an algebraic data type with various constructors for different kinds of types in the Haskell type system.

Variants

Var(TyVar)

A type variable (e.g., a in a -> a).

Con(TyCon)

A type constructor (e.g., Int, Maybe, []).

Prim(PrimTy)

An unboxed primitive type (e.g., Int#, Double#). Used in Numeric Profile for zero-overhead computation.

App(Box<Ty>, Box<Ty>)

Type application (e.g., Maybe Int, Either String).

Fun(Box<Ty>, Box<Ty>)

Function type (e.g., Int -> Bool). This is sugar for App(App(TyCon("->"), a), b).

Tuple(Vec<Ty>)

Tuple type (e.g., (Int, Bool, String)).

List(Box<Ty>)

List type (e.g., [Int]). This is sugar for App(TyCon("[]"), Int).

Forall(Vec<TyVar>, Box<Ty>)

A forall-quantified type (e.g., forall a. a -> a).

Error

An error type, used during type checking to allow recovery.

Nat(TyNat)

A type-level natural number (e.g., 1024 in Tensor '[1024] Float).

Has kind Nat. Used for tensor dimensions.

TyList(TyList)

A type-level list (e.g., '[1024, 768] in Tensor '[1024, 768] Float).

Has kind [Nat] when used for tensor shapes.

Implementations

impl Ty

pub fn unit() -> Self

Creates a unit type ().

pub fn fun(from: Ty, to: Ty) -> Self

Creates a function type a -> b.

pub fn list(elem: Ty) -> Self

Creates a list type [a].

pub fn int_prim() -> Self

Creates an unboxed Int# type (64-bit signed integer).

pub fn double_prim() -> Self

Creates an unboxed Double# type (64-bit float).

pub fn float_prim() -> Self

Creates an unboxed Float# type (32-bit float).

pub fn is_prim(&self) -> bool

Returns true if this is an unboxed primitive type.

pub fn as_prim(&self) -> Option<PrimTy>

Returns the primitive type if this is a Prim variant.

pub fn is_fun(&self) -> bool

Returns true if this is a function type.

pub fn is_error(&self) -> bool

Returns true if this is an error type.

pub fn free_vars(&self) -> Vec<TyVar>

Returns the free type variables in this type.

pub fn is_ground(&self) -> bool

Returns true if this type contains no unification variables.

pub fn nat_lit(n: u64) -> Self

Creates a type-level natural literal.

pub fn shape(dims: &[u64]) -> Self

Creates a shape type from dimension values.

pub fn is_nat(&self) -> bool

Returns true if this is a type-level natural.

pub fn is_ty_list(&self) -> bool

Returns true if this is a type-level list.

pub fn as_nat(&self) -> Option<&TyNat>

Returns the type-level natural if this is a Nat variant.

pub fn as_ty_list(&self) -> Option<&TyList>

Returns the type-level list if this is a TyList variant.

Trait Implementations

impl Clone for Ty

fn clone(&self) -> Ty

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Ty

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Ty

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Ty

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

Formats the value using the given formatter.

impl Eq for Ty

impl Hash for Ty

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 PartialEq for Ty

fn eq(&self, other: &Ty) -> 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 Serialize for Ty

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Ty