MessagePack/src/main/kotlin/ch/dissem/msgpack/types/MPNil.kt

51 lines
1.4 KiB
Kotlin

/*
* Copyright 2017 Christian Basler
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ch.dissem.msgpack.types
import java.io.IOException
import java.io.InputStream
import java.io.OutputStream
/**
* Representation of msgpack encoded nil / null.
*/
object MPNil : MPType<Void?> {
override val value: Void? = null
@Throws(IOException::class)
override fun pack(out: OutputStream) = out.write(NIL)
override fun toString() = "null"
override fun toJson() = "null"
class Unpacker : MPType.Unpacker<MPNil> {
override fun doesUnpack(firstByte: Int) = firstByte == NIL
override fun unpack(firstByte: Int, input: InputStream): MPNil {
return when (firstByte) {
NIL -> MPNil
else -> throw IllegalArgumentException(String.format("0xC0 expected but was 0x%02x", firstByte))
}
}
}
private val NIL = 0xC0
}