Represents an annotated element and allows to obtain its annotations. See the Kotlin language documentation for more information.

interface KAnnotatedElement

Represents a callable entity, such as a function or a property.

interface KCallable<out R>

interface KCallable<out R> : KAnnotatedElement

Represents a class and provides introspection capabilities. Instances of this class are obtainable by the ::class syntax. See the Kotlin language documentation for more information.

interface KClass<T : Any> : KClassifier

interface KClass<T : Any> : 
    KDeclarationContainer, 
    KAnnotatedElement, 
    KClassifier

A classifier is either a class or a type parameter.

interface KClassifier

Represents an entity which may contain declarations of any other entities, such as a class or a package.

interface KDeclarationContainer

Represents a function with introspection capabilities.

interface KFunction<out R> : KCallable<R>, Function<R>

Represents a property declared as a var.

interface KMutableProperty<V> : KProperty<V>

Represents a var-property without any kind of receiver.

interface KMutableProperty0<V> : 
    KProperty0<V>, 
    KMutableProperty<V>

Represents a var-property, operations on which take one receiver as a parameter.

interface KMutableProperty1<T, V> : 
    KProperty1<T, V>, 
    KMutableProperty<V>

Represents a var-property, operations on which take two receivers as parameters.

interface KMutableProperty2<D, E, V> : 
    KProperty2<D, E, V>, 
    KMutableProperty<V>

Represents a parameter passed to a function or a property getter/setter, including this and extension receiver parameters.

interface KParameter : KAnnotatedElement

Represents a property, such as a named val or var declaration. Instances of this class are obtainable by the :: operator.

interface KProperty<out V> : KCallable<V>

Represents a property without any kind of receiver. Such property is either originally declared in a receiverless context such as a package, or has the receiver bound to it.

interface KProperty0<out V> : KProperty<V>, () -> V

Represents a property, operations on which take one receiver as a parameter.

interface KProperty1<T, out V> : KProperty<V>, (T) -> V

Represents a property, operations on which take two receivers as parameters, such as an extension property declared in a class.

interface KProperty2<D, E, out V> : KProperty<V>, (D, E) -> V

Represents a type. Type is usually either a class with optional type arguments, or a type parameter of some declaration, plus nullability.

interface KType

interface KType : KAnnotatedElement

Represents a declaration of a type parameter of a class or a callable. See the Kotlin language documentation for more information.

interface KTypeParameter : KClassifier

Represents a type projection. Type projection is usually the argument to another type in a type usage. For example, in the type Array<out Number>, out Number is the covariant projection of the type represented by the class Number.

data class KTypeProjection

Represents variance applied to a type parameter on the declaration site (declaration-site variance), or to a type in a projection (use-site variance).

enum class KVariance

Visibility is an aspect of a Kotlin declaration regulating where that declaration is accessible in the source code. Visibility can be changed with one of the following modifiers: public, protected, internal, private.

enum class KVisibility

Makes the annotated annotation class an associated object key.

annotation class AssociatedObjectKey

The experimental marker for associated objects API.

annotation class ExperimentalAssociatedObjects

Returns a Java Type instance corresponding to the given Kotlin type.

val KType.javaType: Type

Casts the given value to the class represented by this KClass object. Throws an exception if the value is null or if it is not an instance of this class.

fun <T : Any> KClass<T>.cast(value: Any?): T

If T is an @AssociatedObjectKey-annotated annotation class and this class is annotated with @T (S::class), returns object S.

fun <T : Annotation> KClass<*>.findAssociatedObject(): Any?

Casts the given value to the class represented by this KClass object. Returns null if the value is null or if it is not an instance of this class.

fun <T : Any> KClass<T>.safeCast(value: Any?): T?

Returns a runtime representation of the given reified type T as an instance of KType.

fun <T> typeOf(): KType