Enum Type 

pub enum Type {
    Bottom,
    Any,
    Primitive(BitFlags<Typ>),
    Ref {
        scope: ModPath,
        name: ModPath,
        params: Arc<[Type]>,
    },
    Fn(Arc<FnType>),
    Set(Arc<[Type]>),
    TVar(TVar),
    Error(Arc<Type>),
    Array(Arc<Type>),
    ByRef(Arc<Type>),
    Tuple(Arc<[Type]>),
    Struct(Arc<[(ArcStr, Type)]>),
    Variant(ArcStr, Arc<[Type]>),
    Map {
        key: Arc<Type>,
        value: Arc<Type>,
    },
    Abstract {
        id: AbstractId,
        params: Arc<[Type]>,
    },
}

Variants

Bottom

Any

Primitive(BitFlags<Typ>)

Ref

Fields

scope: ModPath

name: ModPath

params: Arc<[Type]>

Fn(Arc<FnType>)

Set(Arc<[Type]>)

TVar(TVar)

Error(Arc<Type>)

Array(Arc<Type>)

ByRef(Arc<Type>)

Tuple(Arc<[Type]>)

Struct(Arc<[(ArcStr, Type)]>)

Variant(ArcStr, Arc<[Type]>)

Map

Fields

key: Arc<Type>

value: Arc<Type>

Abstract

Fields

id: AbstractId

params: Arc<[Type]>

Implementations

impl Type

pub fn check_cast(&self, env: &Env) -> Result<()>

pub fn cast_value(&self, env: &Env, v: Value) -> Value

pub fn is_a(&self, env: &Env, v: &Value) -> bool

return true if v is structurally compatible with the type

impl Type

pub fn check_contains(&self, env: &Env, t: &Self) -> Result<()>

pub fn contains(&self, env: &Env, t: &Self) -> Result<bool>

pub fn contains_with_flags( &self, flags: BitFlags<ContainsFlags>, env: &Env, t: &Self, ) -> Result<bool>

impl Type

pub fn could_match(&self, env: &Env, t: &Self) -> Result<bool>

pub fn sig_matches( &self, env: &Env, impl_type: &Self, adts: &FxHashMap<AbstractId, Type>, ) -> Result<()>

impl Type

pub fn union(&self, env: &Env, t: &Self) -> Result<Self>

pub fn diff(&self, env: &Env, t: &Self) -> Result<Self>

impl Type

pub fn unfreeze_tvars(&self)

pub fn alias_tvars(&self, known: &mut FxHashMap<ArcStr, TVar>)

alias type variables with the same name to each other

pub fn collect_tvars(&self, known: &mut FxHashMap<ArcStr, TVar>)

pub fn check_tvars_declared(&self, declared: &FxHashSet<ArcStr>) -> Result<()>

pub fn has_unbound(&self) -> bool

pub fn bind_as(&self, t: &Self)

bind all unbound type variables to the specified type

pub fn reset_tvars(&self) -> Type

return a copy of self with all type variables unbound and unaliased. self will not be modified

pub fn replace_tvars(&self, known: &FxHashMap<ArcStr, Self>) -> Type

return a copy of self with every TVar named in known replaced with the corresponding type

impl Type

pub fn empty_tvar() -> Self

pub fn is_defined(&self) -> bool

pub fn lookup_ref<'a>(&'a self, env: &'a Env) -> Result<&'a Type>

pub fn any() -> Self

pub fn boolean() -> Self

pub fn number() -> Self

pub fn int() -> Self

pub fn uint() -> Self

pub fn strip_error(&self, env: &Env) -> Option<Self>

remove the outer error type and return the inner payload, fail if self isn’t an error or contains non error types

pub fn is_bot(&self) -> bool

pub fn with_deref<R, F: FnOnce(Option<&Self>) -> R>(&self, f: F) -> R

pub fn scope_refs(&self, scope: &ModPath) -> Type

Trait Implementations

impl Clone for Type

fn clone(&self) -> Type

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Type

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

Formats the value using the given formatter.

impl Default for Type

fn default() -> Self

Returns the “default value” for a type.

impl Display for Type

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

Formats the value using the given formatter.

impl Ord for Type

fn cmp(&self, other: &Type) -> 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 Type

fn eq(&self, other: &Type) -> 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 Type

fn partial_cmp(&self, other: &Type) -> 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 PrettyDisplay for Type

fn fmt_pretty_inner(&self, buf: &mut PrettyBuf) -> Result

Do the actual pretty print. This should not be called directly, it will be called by fmt_pretty when we know it can’t fit on a single line.

fn fmt_pretty(&self, buf: &mut PrettyBuf) -> Result

This is the user facing fmt method, it will first try to format the expression on a single line, and if that is impossible it will call the pretty printer.

fn to_string_pretty(&self, limit: usize) -> LPooled<String>

Pretty print to a pooled string

impl Eq for Type

impl StructuralPartialEq for Type