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Mudando forma de usar transform #104

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Nov 4, 2024
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Mudando forma de usar transform #104

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150 changes: 4 additions & 146 deletions toolkit/event-observer/src/main/kotlin/br/com/arch/toolkit/util/_chain.kt
View file
Original file line number Diff line number Diff line change
@@ -359,84 +359,13 @@ fun <T, R> LiveData<T>.chainWith(
* @param X The type of the value after transformation.
*/
fun <T, R, X> LiveData<T>.chainWith(
context: CoroutineContext,
context: CoroutineContext = EmptyCoroutineContext,
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: Transform.Nullable<T, R, X>
): LiveData<X?> = liveData(context) {
internalChainWith(other, condition).applyTransformation(context, transform).collect(::emit)
}

/**
* @see LiveData.chainWith
*/
fun <T, R, X> LiveData<T>.chainWith(
context: CoroutineContext,
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: Pair<CoroutineDispatcher, suspend (T?, R?) -> X?>
): LiveData<X?> = chainWith(
context = context,
other = other,
condition = condition,
transform = Transform.Nullable.OmitFail(transform.first, transform.second)
)

/**
* @see LiveData.chainWith
*/
fun <T, R, X> LiveData<T>.chainWith(
context: CoroutineContext,
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: suspend (T?, R?) -> X?
): LiveData<X?> = chainWith(
context = context,
other = other,
condition = condition,
transform = Dispatchers.IO to transform
)

/**
* @see LiveData.chainWith
*/
fun <T, R, X> LiveData<T>.chainWith(
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: Transform.Nullable<T, R, X>
): LiveData<X?> = chainWith(
context = EmptyCoroutineContext,
other = other,
condition = condition,
transform = transform
)

/**
* @see LiveData.chainWith
*/
fun <T, R, X> LiveData<T>.chainWith(
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: Pair<CoroutineDispatcher, suspend (T?, R?) -> X?>
): LiveData<X?> = chainWith(
context = EmptyCoroutineContext,
other = other,
condition = condition,
transform = transform
)

/**
* @see LiveData.chainWith
*/
fun <T, R, X> LiveData<T>.chainWith(
other: suspend (T?) -> LiveData<R>,
condition: suspend (T?) -> Boolean,
transform: suspend (T?, R?) -> X?
): LiveData<X?> = chainWith(
other = other,
condition = condition,
transform = Dispatchers.IO to transform
)
/* endregion ------------------------------------------------------------------------------------ */

/* region Non Nullable -------------------------------------------------------------------------- */
@@ -591,7 +520,7 @@ fun <T, R> LiveData<T>.chainNotNullWith(
* @param X The type of the value after applying the transformation.
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
context: CoroutineContext,
context: CoroutineContext = EmptyCoroutineContext,
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: Transform.NotNull<T, R, X>
@@ -600,89 +529,18 @@ fun <T, R, X> LiveData<T>.chainNotNullWith(
.applyTransformation(context, transform)
.collect(::emit)
}

/**
* @see LiveData.chainNotNullWith
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
context: CoroutineContext,
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: Pair<CoroutineDispatcher, suspend (T, R) -> X>
): LiveData<X> = chainNotNullWith(
context = context,
other = other,
condition = condition,
transform = Transform.NotNull.OmitFail(transform.first, transform.second)
)

/**
* @see LiveData.chainNotNullWith
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
context: CoroutineContext,
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: suspend (T, R) -> X
): LiveData<X> = chainNotNullWith(
context = context,
other = other,
condition = condition,
transform = Dispatchers.IO to transform
)

/**
* @see LiveData.chainNotNullWith
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: Transform.NotNull<T, R, X>
): LiveData<X> = chainNotNullWith(
context = EmptyCoroutineContext,
other = other,
condition = condition,
transform = transform
)

/**
* @see LiveData.chainNotNullWith
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: Pair<CoroutineDispatcher, suspend (T, R) -> X>
): LiveData<X> = chainNotNullWith(
context = EmptyCoroutineContext,
other = other,
condition = condition,
transform = transform
)

/**
* @see LiveData.chainNotNullWith
*/
fun <T, R, X> LiveData<T>.chainNotNullWith(
other: suspend (T) -> LiveData<R>,
condition: suspend (T) -> Boolean,
transform: suspend (T, R) -> X
): LiveData<X> = chainNotNullWith(
other = other,
condition = condition,
transform = Dispatchers.IO to transform
)
/* endregion ------------------------------------------------------------------------------------ */

/* region Auxiliary Functions ------------------------------------------------------------------- */
internal suspend inline fun <T, R> LiveData<T>.internalChainNotNullWith(
private suspend inline fun <T, R> LiveData<T>.internalChainNotNullWith(
noinline other: suspend (T) -> LiveData<R>,
noinline condition: suspend (T) -> Boolean,
) = internalChainWith(
other = { data -> data?.let { other(it) } ?: error("Data null in chainNotNullWith") },
condition = { data -> data?.let { condition(it) } ?: false }
).mapNotNull { it.onlyWithValues() }

internal suspend inline fun <T, R> LiveData<T>.internalChainWith(
private suspend inline fun <T, R> LiveData<T>.internalChainWith(
noinline other: suspend (T?) -> LiveData<R>,
noinline condition: suspend (T?) -> Boolean,
) = channelFlow {
135 changes: 6 additions & 129 deletions toolkit/event-observer/src/main/kotlin/br/com/arch/toolkit/util/_combine.kt
View file
Original file line number Diff line number Diff line change
@@ -6,7 +6,6 @@ import androidx.lifecycle.LiveData
import androidx.lifecycle.MediatorLiveData
import androidx.lifecycle.asFlow
import androidx.lifecycle.liveData
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.cancel
import kotlinx.coroutines.currentCoroutineContext
@@ -291,73 +290,12 @@ fun <T, R> LiveData<T>.combine(
* @param X The type of the value after applying the transformation.
*/
fun <T, R, X> LiveData<T>.combine(
context: CoroutineContext,
context: CoroutineContext = EmptyCoroutineContext,
other: LiveData<R>,
transform: Transform.Nullable<T, R, X>
): LiveData<X?> = liveData(context) {
internalCombine(other).applyTransformation(context, transform).collect(::emit)
}

/**
* @see LiveData.combine
*/
fun <T, R, X> LiveData<T>.combine(
context: CoroutineContext,
other: LiveData<R>,
transform: Pair<CoroutineDispatcher, suspend (T?, R?) -> X?>
): LiveData<X?> = combine(
context = context,
other = other,
transform = Transform.Nullable.OmitFail(transform.first, transform.second)
)

/**
* @see LiveData.combine
*/
fun <T, R, X> LiveData<T>.combine(
context: CoroutineContext,
other: LiveData<R>,
transform: suspend (T?, R?) -> X?
): LiveData<X?> = combine(
context = context,
other = other,
transform = Dispatchers.IO to transform
)

/**
* @see LiveData.combine
*/
fun <T, R, X> LiveData<T>.combine(
other: LiveData<R>,
transform: Transform.Nullable<T, R, X>
): LiveData<X?> = combine(
context = EmptyCoroutineContext,
other = other,
transform = transform
)

/**
* @see LiveData.combine
*/
fun <T, R, X> LiveData<T>.combine(
other: LiveData<R>,
transform: Pair<CoroutineDispatcher, suspend (T?, R?) -> X?>
): LiveData<X?> = combine(
context = EmptyCoroutineContext,
other = other,
transform = transform
)

/**
* @see LiveData.combine
*/
fun <T, R, X> LiveData<T>.combine(
other: LiveData<R>,
transform: suspend (T?, R?) -> X?
): LiveData<X?> = combine(
other = other,
transform = Dispatchers.IO to transform
)
/* endregion ------------------------------------------------------------------------------------ */

/* region Non Nullable -------------------------------------------------------------------------- */
@@ -484,83 +422,22 @@ fun <T, R> LiveData<T>.combineNotNull(
* @param X The type of the value after applying the transformation.
*/
fun <T, R, X> LiveData<T>.combineNotNull(
context: CoroutineContext,
context: CoroutineContext = EmptyCoroutineContext,
other: LiveData<R>,
transform: Transform.NotNull<T, R, X>
): LiveData<X> = liveData(context) {
internalCombineNotNull(other).applyTransformation(context, transform).collect(::emit)
}

/**
* @see LiveData.combineNotNull
*/
fun <T, R, X> LiveData<T>.combineNotNull(
context: CoroutineContext,
other: LiveData<R>,
transform: Pair<CoroutineDispatcher, suspend (T, R) -> X>
): LiveData<X> = combineNotNull(
context = context,
other = other,
transform = Transform.NotNull.OmitFail(transform.first, transform.second)
)

/**
* @see LiveData.combineNotNull
*/
fun <T, R, X> LiveData<T>.combineNotNull(
context: CoroutineContext,
other: LiveData<R>,
transform: suspend (T, R) -> X
): LiveData<X> = combineNotNull(
context = context,
other = other,
transform = Dispatchers.IO to transform
)

/**
* @see LiveData.combineNotNull
*/
fun <T, R, X> LiveData<T>.combineNotNull(
other: LiveData<R>,
transform: Transform.NotNull<T, R, X>
): LiveData<X> = combineNotNull(
context = EmptyCoroutineContext,
other = other,
transform = transform
)

/**
* @see LiveData.combineNotNull
*/
fun <T, R, X> LiveData<T>.combineNotNull(
other: LiveData<R>,
transform: Pair<CoroutineDispatcher, suspend (T, R) -> X>
): LiveData<X> = combineNotNull(
context = EmptyCoroutineContext,
other = other,
transform = transform
)

/**
* @see LiveData.combineNotNull
*/
fun <T, R, X> LiveData<T>.combineNotNull(
other: LiveData<R>,
transform: suspend (T, R) -> X
): LiveData<X> = combineNotNull(
other = other,
transform = Dispatchers.IO to transform
)
/* endregion ------------------------------------------------------------------------------------ */

/* region Auxiliary Functions ------------------------------------------------------------------- */
internal suspend inline fun <T, R> LiveData<T>.internalCombineNotNull(other: LiveData<R>) =
private suspend inline fun <T, R> LiveData<T>.internalCombineNotNull(other: LiveData<R>) =
internalCombine(other).mapNotNull { it.onlyWithValues() }

internal suspend inline fun <T, R> LiveData<T>.internalCombine(other: LiveData<R>) = channelFlow {
val aFlow = this@internalCombine.asFlow()
val bFlow = other.asFlow()
val cFlow: Flow<Pair<T?, R?>> = aFlow.combine(bFlow) { a, b -> (a to b) }
val aFlow: Flow<T> = asFlow()
val bFlow: Flow<R> = other.asFlow()
val cFlow: Flow<Pair<T?, R?>> = aFlow.combine(bFlow) { a, b -> a to b }

withContext(currentCoroutineContext()) {
launch { aFlow.collect { if (other.isInitialized.not()) trySend(it to other.value) else cancel() } }
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