commonMain.com.eygraber.vice.loadable.ViceLoadable.kt Maven / Gradle / Ivy

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package com.eygraber.vice.loadable

import androidx.compose.runtime.Immutable

@Immutable
public sealed interface ViceLoadable {
  public val value: T

  @Immutable
  public data class Loading(override val value: T) : ViceLoadable

  @Immutable
  public data class Loaded(override val value: T) : ViceLoadable
}

public inline val ViceLoadable<*>.isLoading: Boolean get() = this is ViceLoadable.Loading
public inline val ViceLoadable<*>.isNotLoading: Boolean get() = this !is ViceLoadable.Loading
public inline val ViceLoadable<*>.isLoaded: Boolean get() = this is ViceLoadable.Loaded
public inline val ViceLoadable<*>.isNotLoaded: Boolean get() = this !is ViceLoadable.Loaded

public inline val  ViceLoadable.loadedValueOrNull: T? get() = when(this) {
  is ViceLoadable.Loading -> null
  is ViceLoadable.Loaded -> value
}

public inline fun  ViceLoadable.map(
  mapper: (T) -> ViceLoadable,
): ViceLoadable = mapper(value)

public inline fun  ViceLoadable.mapValue(
  mapper: (T) -> R,
): ViceLoadable = when(this) {
  is ViceLoadable.Loading -> ViceLoadable.Loading(mapper(value))
  is ViceLoadable.Loaded -> ViceLoadable.Loaded(mapper(value))
}