abstract class Crystal::ClassType
inherits Crystal::ModuleType

Abstract base type for classes and structs (types that can be allocated via the allocate method).

Included modules

Crystal::DefInstanceContainer Crystal::InstanceVarInitializerContainer Crystal::SubclassObservable

Direct known subclasses

Crystal::GenericClassType Crystal::MetaclassType Crystal::NonGenericClassType Crystal::PrimitiveType

Class methods

.new(program, namespace, name, superclass, add_subclass = true)

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Methods

#abstract=(abstract __arg0)

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#abstract? : Bool

Returns true if this type is abstract.

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#add_subclass(subclass)

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#can_be_stored=(can_be_stored)

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#can_be_stored? : Bool

Returns true if this type can be assigned to an instance or class variable, or used in a generic type argument.

As of now, abstract base type such as Object, Reference, Value, Int, and unbound generic types such as Array(T), can't be stored.

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#common_ancestor(other : NonGenericModuleType | GenericModuleInstanceType)

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#common_ancestor(other : VirtualType)

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#common_ancestor(other : ClassType | GenericClassInstanceType)

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#depth : Int32

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#extern=(extern)

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#extern? : Bool

Returns true if this is an extern C struct or union (extern_union? tells which one)

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#extern_union=(extern_union)

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#extern_union? : Bool

Returns true if this is an extern C union (extern? will be true too)

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#force_add_subclass

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#lookup_new_in_ancestors=(lookup_new_in_ancestors)

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#lookup_new_in_ancestors? : Bool

Should new be looked up in ancestors?

This is true if this type doesn't define any initialize methods.

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#metaclass=(metaclass : Type?)

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#packed=(packed)

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#packed? : Bool

Returns true if this type has the @[Packed] annotation on it (only applicable for C structs)

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#struct=(struct __arg0)

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#struct? : Bool

Returns true if this type is a struct.

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#subclasses : Array(Crystal::Type)

Returns direct subclasses of this type.

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#superclass : Type?

Returns this type's superclass, or nil if it doesn't have one

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#superclass=(superclass)

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#type_desc

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