commonMain.progressive.Mapping.kt Maven / Gradle / Ivy

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package opensavvy.state.progressive

/**
 * If this outcome is [successful][ProgressiveOutcome.Success], replaces its [value][ProgressiveOutcome.Success.value] using [transform].
 *
 * If this outcome isn't successful, does nothing.
 *
 * @see mapFailure Map the failure state instead of the success state.
 */
inline fun  ProgressiveOutcome.map(transform: (InputValue) -> OutputValue) = when (this) {
    is ProgressiveOutcome.Incomplete -> this
    is ProgressiveOutcome.Failure -> this
    is ProgressiveOutcome.Success -> ProgressiveOutcome.Success(transform(this.value), this.progress)
}

/**
 * If this outcome is [failed][ProgressiveOutcome.Failure], replaces its [failure][ProgressiveOutcome.Failure.failure] using [transformFailure].
 *
 * If this outcome isn't failed, does nothing.
 *
 * @see map Map the success state instead of the failure state.
 */
inline fun  ProgressiveOutcome.mapFailure(transformFailure: (InputFailure) -> OutputFailure) = when (this) {
    is ProgressiveOutcome.Incomplete -> this
    is ProgressiveOutcome.Failure -> ProgressiveOutcome.Failure(transformFailure(this.failure), this.progress)
    is ProgressiveOutcome.Success -> this
}