fuookami.ospf.kotlin.utils.math.value_range.Interval.kt Maven / Gradle / Ivy

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package fuookami.ospf.kotlin.utils.math.value_range

import java.util.*
import kotlinx.serialization.*
import kotlinx.serialization.encoding.*
import kotlinx.serialization.descriptors.*

private data object IntervalSerializer : KSerializer {
    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("IntervalType", PrimitiveKind.STRING)

    override fun serialize(encoder: Encoder, value: Interval) {
        encoder.encodeString(value.toString().lowercase(Locale.getDefault()))
    }

    override fun deserialize(decoder: Decoder): Interval {
        return Interval.valueOf(decoder.decodeString()
            .replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() })
    }
}

@Serializable(with = IntervalSerializer::class)
enum class Interval {
    Open {
        override val lowerSign = "("
        override val upperSign = ")"
        override fun union(rhs: Interval) = rhs
        override fun intersect(rhs: Interval) = Open
    },
    Closed {
        override val lowerSign = "["
        override val upperSign = "]"
        override fun union(rhs: Interval) = Closed
        override fun intersect(rhs: Interval) = rhs
    };

    abstract val lowerSign: String
    abstract val upperSign: String
    abstract infix fun union(rhs: Interval): Interval
    abstract infix fun intersect(rhs: Interval): Interval
}