kotlin-stdlib / kotlin.reflect / KProperty0

KProperty0

Common
JVM
JS
Native
1.0
interface KProperty0<out R> : KProperty<R>, () -> R

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.

Types

JVM
JS
1.0

Getter

Getter of the property is a get method declared alongside the property.

interface Getter<out R> : Getter<R>, () -> R

Properties

JVM
JS
1.0

getter

The getter of this property, used to obtain the value of the property.

abstract val getter: Getter<R>

Functions

Common
JVM
JS
Native
1.0

get

Returns the current value of the property.

abstract fun get(): R
JVM
JS
1.1

getDelegate

Returns the value of the delegate if this is a delegated property, or null if this property is not delegated. See the Kotlin language documentation for more information.

abstract fun getDelegate(): Any?
Native
1.3

invoke

abstract operator fun invoke(): R

Extension Properties

JVM
1.1

extensionReceiverParameter

Returns a parameter representing the extension receiver instance needed to call this callable, or null if this callable is not an extension.

val KCallable<*>.extensionReceiverParameter: KParameter?
JVM
1.1

instanceParameter

Returns a parameter representing the this instance needed to call this callable, or null if this callable is not a member of a class and thus doesn't take such parameter.

val KCallable<*>.instanceParameter: KParameter?
JVM
1.0

isAccessible

Provides a way to suppress JVM access checks for a callable.

var KCallable<*>.isAccessible: Boolean
Common
JVM
JS
Native
1.2

isInitialized

Returns true if this lateinit property has been assigned a value, and false otherwise.

val KProperty0<*>.isInitialized: Boolean
JVM
1.0

javaField

Returns a Java Field instance corresponding to the backing field of the given property, or null if the property has no backing field.

val KProperty<*>.javaField: Field?
JVM
1.0

javaGetter

Returns a Java Method instance corresponding to the getter of the given property, or null if the property has no getter, for example in case of a simple private val in a class.

val KProperty<*>.javaGetter: Method?
JVM
1.1

valueParameters

Returns parameters of this callable, excluding the this instance and the extension receiver parameter.

val KCallable<*>.valueParameters: List<KParameter>

Extension Functions

JVM
1.3

callSuspend

Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.call. Otherwise, calls the suspend function with current continuation.

suspend fun <R> KCallable<R>.callSuspend(
    vararg args: Any?
): R
JVM
1.3

callSuspendBy

Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.callBy. Otherwise, calls the suspend function with current continuation.

suspend fun <R> KCallable<R>.callSuspendBy(
    args: Map<KParameter, Any?>
): R
JVM
1.1

findAnnotation

Returns an annotation of the given type on this element.

fun <T : Annotation> KAnnotatedElement.findAnnotation(): T?
JVM
1.1

findParameterByName

Returns the parameter of this callable with the given name, or null if there's no such parameter.

fun KCallable<*>.findParameterByName(
    name: String
): KParameter?
JVM
1.3

hasAnnotation

Returns true if this element is annotated with an annotation of type T.

fun <T : Annotation> KAnnotatedElement.hasAnnotation(): Boolean
JVM
1.0

reflect

This is an experimental API. Given a class for a compiled Kotlin lambda or a function expression, returns a KFunction instance providing introspection capabilities for that lambda or function expression and its parameters. Not all features are currently supported, in particular KCallable.call and KCallable.callBy will fail at the moment.

fun <R> Function<R>.reflect(): KFunction<R>?

Inheritors

Common
JVM
JS
Native
1.0

KMutableProperty0

Represents a var-property without any kind of receiver.

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