A class alias definition.

A class alias definition has the following components:

(While semantically, a class alias may never have case types or extend or satisfy other types, these nodes may syntactically still be present.)

Examples:

shared class VariadicString(Character* characters) => String(characters);
shared class MemberName(String name) => LIdentifier(name);

no subtypes hierarchy

Initializer
ClassAliasDefinition(UIdentifier name, Parameters parameters, ClassSpecifier specifier, CaseTypes? caseTypes = null, ExtendedType? extendedType = null, SatisfiedTypes? satisfiedTypes = null, TypeParameters? typeParameters = null, TypeConstraint[] typeConstraints = [], Annotations annotations = ...)
Parameters:
  • name

    The name of the class.

  • parameters

    The parameters of the class.

  • specifier

    The specifier of the class.

  • caseTypes = null

    The case types of the class.

    (In fact, a class alias may never have case types, but nevertheless it’s syntactically valid.)

  • extendedType = null

    The extended type of the class.

    (In fact, a class alias may never extend a class, but nevertheless it’s syntactically valid.)

  • satisfiedTypes = null

    The satisfied types of the class.

    (In fact, a class alias may never satisfy types, but nevertheless it’s syntactically valid.)

  • typeParameters = null

    The type parameters of the class.

  • typeConstraints = []

    The type constraints on the class’ type parameters.

  • annotations = Annotations()

    The annotations of the class.

Attributes
annotationsSource Codeshared actual Annotations annotations

The annotations of the class.

caseTypesSource Codeshared actual CaseTypes? caseTypes

The case types of the class.

(In fact, a class alias may never have case types, but nevertheless it’s syntactically valid.)

childrenSource Codeshared actual <Annotations|UIdentifier|TypeParameters|Parameters|CaseTypes|ExtendedType|SatisfiedTypes|TypeConstraint|ClassSpecifier>[] children

The child nodes of this node.

extendedTypeSource Codeshared actual ExtendedType? extendedType

The extended type of the class.

(In fact, a class alias may never extend a class, but nevertheless it’s syntactically valid.)

hashSource Codeshared actual Integer hash

The hash value of the value, which allows the value to be an element of a hash-based set or key of a hash-based map. Implementations must respect the constraint that:

  • if x==y then x.hash==y.hash.

Therefore, a class which refines equals must also refine hash.

Refines Object.hash
nameSource Codeshared actual UIdentifier name

The name of the class.

Refines TypeDeclaration.name ultimately refines Declaration.name
parametersSource Codeshared actual Parameters parameters

The parameters of the class.

satisfiedTypesSource Codeshared actual SatisfiedTypes? satisfiedTypes

The satisfied types of the class.

(In fact, a class alias may never satisfy types, but nevertheless it’s syntactically valid.)

specifierSource Codeshared ClassSpecifier specifier

The specifier of the class.

typeConstraintsSource Codeshared actual TypeConstraint[] typeConstraints

The type constraints on the class’ type parameters.

typeParametersSource Codeshared actual TypeParameters? typeParameters

The type parameters of the class.

Inherited Attributes
Attributes inherited from: Node
Attributes inherited from: Object
Methods
copySource Codeshared ClassAliasDefinition copy(UIdentifier name = ..., Parameters parameters = ..., ClassSpecifier specifier = ..., CaseTypes? caseTypes = ..., ExtendedType? extendedType = ..., SatisfiedTypes? satisfiedTypes = ..., TypeParameters? typeParameters = ..., TypeConstraint[] typeConstraints = ..., Annotations annotations = ...)
Parameters:
  • name = this.name
  • parameters = this.parameters
  • specifier = this.specifier
  • caseTypes = this.caseTypes
  • extendedType = this.extendedType
  • satisfiedTypes = this.satisfiedTypes
  • typeParameters = this.typeParameters
  • typeConstraints = this.typeConstraints
  • annotations = this.annotations
equalsSource Codeshared actual Boolean equals(Object that)

Determine if two values are equal. Implementations should respect the constraints that:

  • if x===y then x==y (reflexivity),
  • if x==y then y==x (symmetry),
  • if x==y and y==z then x==z (transitivity).

Furthermore it is recommended that implementations ensure that if x==y then x and y have the same concrete class.

A class which explicitly refines equals() is said to support value equality, and the equality operator == is considered much more meaningful for such classes than for a class which simply inherits the default implementation of identity equality from Identifiable.

transformSource Codeshared actual Result transform<out Result>(Transformer<Result> transformer)

Transform this node with the given transformer by calling the appropriate transformX method on the transformer.

If you have a Node node that’s actually an LIdentifier instance, then the runtime will call LIdentifier.transform; therefore, this method is by nature narrowing. This means that if transformer is a NarrowingTransformer, calling node.transform(transformer) is equivalent to calling transformer.transformNode(node). On the other hand, if transformer is a WideningTransformer, then the two operations are very different.

Inherited Methods
Methods inherited from: Node