import kotlin.coroutines.CoroutineContext
import kotlin.coroutines.coroutineContext
import kotlin.coroutines.startCoroutine
import kotlin.coroutines.suspendCoroutine


fun <T> singleton(value: T): Codec<T> =
    SingletonCodec(value)


fun <T> codec(
    encode: suspend WriteContext.(T) -> Unit,
    decode: suspend ReadContext.() -> T?
): Codec<T> = object : Codec<T> {