TypeReprMethods

Extension methods of TypeRepr

class Object
trait Matchable
class Any

Extensions

Extensions

extension (self: TypeRepr)
def <:<(that: TypeRepr): Boolean

Is this type a subtype of that type?

Is this type a subtype of that type?

def =:=(that: TypeRepr): Boolean

Is self type the same as that type? This is the case iff self <:< that and that <:< self.

Is self type the same as that type? This is the case iff self <:< that and that <:< self.

The current type applied to given type arguments: this[targ]

The current type applied to given type arguments: this[targ]

The current type applied to given type arguments: this[targ0, ..., targN]

The current type applied to given type arguments: this[targ0, ..., targN]

def asType: Type[_ <: AnyKind]

Convert this TypeRepr to an Type[?]

Convert this TypeRepr to an Type[?]

Usage:

def f(using Quotes) = {
val typeRepr: TypeRepr = ???
typeRepr.asType match
  case '[t] =>
    '{ val x: t = ??? }
}

The base classes of this type with the class itself as first element.

The base classes of this type with the class itself as first element.

The least type instance of given class which is a super-type of this type. Example:

The least type instance of given class which is a super-type of this type. Example:

  class D[T]
  class C extends p.D[Int]
  ThisType(C).baseType(D) = p.D[Int]

Follow aliases, annotated types until type is no longer alias type, annotated type.

Follow aliases, annotated types until type is no longer alias type, annotated type.

Is this type an instance of a non-bottom subclass of the given class cls?

Is this type an instance of a non-bottom subclass of the given class cls?

Is this type an context function type?

Is this type an context function type?

See also:

isFunctionType

Is this type a dependent function type?

Is this type a dependent function type?

See also:

isFunctionType

Is this type an erased function type?

Is this type an erased function type?

See also:

isFunctionType

Is this type a function type?

Is this type a function type?

Returns:

true if the dealiased type of self without refinement is FunctionN[T1, T2, ..., Tn]

Note:

The function

  • returns true for given Int => Int and erased Int => Int
  • returns false for List[Int], despite that List[Int] <:< Int => Int.
@since("3.1")

Is this type a TupleN type?

Is this type a TupleN type?

Returns:

true if the dealiased type of self is TupleN[T1, T2, ..., Tn]

def memberType(member: Symbol): TypeRepr

The type of member as seen from prefix self.

The type of member as seen from prefix self.

Also see typeRef and termRef

The type <this . sym>, reduced if possible

The type <this . sym>, reduced if possible

Shows the type as a String

Shows the type as a String

A simplified version of this type which is equivalent wrt =:= to this type. Reduces typerefs, applied match types, and and or types.

A simplified version of this type which is equivalent wrt =:= to this type. Reduces typerefs, applied match types, and and or types.

Substitute all types that refer in their symbol attribute to one of the symbols in from by the corresponding types in to.

Substitute all types that refer in their symbol attribute to one of the symbols in from by the corresponding types in to.

The applied type arguments (empty if there is no such arguments)

The applied type arguments (empty if there is no such arguments)

Widen from singleton type to its underlying non-singleton base type by applying one or more underlying dereferences, Also go from => T to T. Identity for all other types. Example:

Widen from singleton type to its underlying non-singleton base type by applying one or more underlying dereferences, Also go from => T to T. Identity for all other types. Example:

class Outer { class C ; val x: C } def o: Outer <o.x.type>.widen = o.C

Widen from ByName type to its result type.

Widen from ByName type to its result type.

Widen from TermRef to its underlying non-termref base type, while also skipping ByName types.

Widen from TermRef to its underlying non-termref base type, while also skipping ByName types.