aboutsummaryrefslogtreecommitdiff
path: root/src/main/kotlin/moe/nea/ledger/ExpiringValue.kt
diff options
context:
space:
mode:
Diffstat (limited to 'src/main/kotlin/moe/nea/ledger/ExpiringValue.kt')
-rw-r--r--src/main/kotlin/moe/nea/ledger/ExpiringValue.kt28
1 files changed, 0 insertions, 28 deletions
diff --git a/src/main/kotlin/moe/nea/ledger/ExpiringValue.kt b/src/main/kotlin/moe/nea/ledger/ExpiringValue.kt
deleted file mode 100644
index dac4751..0000000
--- a/src/main/kotlin/moe/nea/ledger/ExpiringValue.kt
+++ /dev/null
@@ -1,28 +0,0 @@
-package moe.nea.ledger
-
-import kotlin.time.Duration
-import kotlin.time.Duration.Companion.nanoseconds
-
-class ExpiringValue<T>(private val value: T) {
- val lastSeenAt: Long = System.nanoTime()
- val age get() = (System.nanoTime() - lastSeenAt).nanoseconds
- var taken = false
- fun get(expiry: Duration): T? {
- return if (!taken && expiry > age) value
- else null
- }
-
- companion object {
- fun <T> empty(): ExpiringValue<T> {
- val value = ExpiringValue(Unit)
- value.take()
- @Suppress("UNCHECKED_CAST")
- return value as ExpiringValue<T>
- }
- }
-
- fun consume(expiry: Duration): T? = get(expiry).also { take() }
- fun take() {
- taken = true
- }
-} \ No newline at end of file