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Kotlin multiplatform serialization runtime library

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package kotlinx.serialization.protobuf.internal

import kotlinx.serialization.*
import kotlinx.serialization.descriptors.*
import kotlinx.serialization.encoding.*
import kotlinx.serialization.protobuf.*

@OptIn(ExperimentalSerializationApi::class)
internal class PackedArrayEncoder(
    proto: ProtoBuf,
    writer: ProtobufWriter,
    curTag: ProtoDesc,
    descriptor: SerialDescriptor,
    stream: ByteArrayOutput = ByteArrayOutput()
) : NestedRepeatedEncoder(proto, writer, curTag, descriptor, stream) {

    // Triggers not writing header
    override fun SerialDescriptor.getTag(index: Int): ProtoDesc = MISSING_TAG

    override fun beginCollection(descriptor: SerialDescriptor, collectionSize: Int): CompositeEncoder {
        throw SerializationException("Packing only supports primitive number types")
    }

    override fun beginStructure(descriptor: SerialDescriptor): CompositeEncoder {
        throw SerializationException("Packing only supports primitive number types")
    }

    override fun encodeTaggedString(tag: ProtoDesc, value: String) {
        throw SerializationException("Packing only supports primitive number types")
    }
}