Coverage Summary for Class: ProtoInt64ValueSerializer (com.ghost.protobuf.wkt)

 @file:OptIn(InternalGhostApi::class)
 
 package com.ghost.protobuf.wkt
 
 import com.ghost.serialization.InternalGhostApi
 import com.ghost.serialization.contract.GhostSerializer
 import com.ghost.serialization.parser.GhostJsonFlatReader
 import com.ghost.serialization.parser.GhostJsonReader
 import com.ghost.serialization.parser.GhostJsonStringReader
 import com.ghost.serialization.parser.nextLong
 import com.ghost.serialization.writer.GhostJsonFlatWriter
 import com.ghost.serialization.writer.GhostJsonStringWriter
 import com.ghost.serialization.writer.GhostJsonWriter
 import com.ghost.serialization.parser.GhostJsonConstants as C
 import kotlin.jvm.JvmInline
 
 /**
  * Wrapper message for `int64`.
  *
  * The JSON representation for `Int64Value` is JSON string.
  */
 @JvmInline value class ProtoInt64Value(val value: Long)
 
 // Helper to format a Long to String zero-allocation.
 // Operates in negative space throughout (never negates the full magnitude) so that
 // Long.MIN_VALUE round-trips correctly: -Long.MIN_VALUE overflows back to Long.MIN_VALUE
 // in two's complement, which previously corrupted the output to "-0" for that boundary value.
 internal fun formatLong(value: Long): String {
     val outputBuffer = ByteArray(C.LONG_BUFFER_SIZE)
     var bufferPosition = 0
     val isNegative = value < 0
     if (isNegative) {
         outputBuffer[bufferPosition++] = C.CHAR_HYPHEN.code.toByte()
     }
     var absoluteValue = if (isNegative) value else -value
     var digitCount = 1
     while (absoluteValue <= -C.BASE_TEN) {
         digitCount++
         absoluteValue /= C.BASE_TEN
     }
     var divisor = 1L
     var digitIndex = digitCount - 1
     while (digitIndex > 0) {
         divisor *= C.BASE_TEN
         digitIndex--
     }
     absoluteValue = if (isNegative) value else -value
     while (divisor > 0) {
         val digit = (-(absoluteValue / divisor)).toInt()
         outputBuffer[bufferPosition++] = (digit + C.ZERO_INT).toByte()
         absoluteValue %= divisor
         divisor /= C.BASE_TEN
     }
     return outputBuffer.decodeToString(0, bufferPosition)
 }
 
 /**
  * Serializer for [ProtoInt64Value].
  */
 object ProtoInt64ValueSerializer : GhostSerializer<ProtoInt64Value> {
     override val typeName: String get() = C.WKT_INT64_VALUE_TYPE
     override fun serialize(writer: GhostJsonWriter, value: ProtoInt64Value) { writer.value(formatLong(value.value)) }
     override fun serialize(writer: GhostJsonFlatWriter, value: ProtoInt64Value) { writer.value(formatLong(value.value)) }
     override fun serialize(writer: GhostJsonStringWriter, value: ProtoInt64Value) { writer.value(formatLong(value.value)) }
     override fun deserialize(reader: GhostJsonReader): ProtoInt64Value = ProtoInt64Value(reader.nextLong())
     override fun deserialize(reader: GhostJsonFlatReader): ProtoInt64Value = ProtoInt64Value(reader.nextLong())
 }