Coverage Summary for Class: GhostStringUtil (com.ghost.serialization)

 package com.ghost.serialization
 
 import sun.misc.Unsafe
 
 @InternalGhostApi
 actual object GhostStringUtil {
     private const val UNSAFE_FIELD_NAME = "theUnsafe"
     private const val STRING_VALUE_FIELD_NAME = "value"
     private const val STRING_CODER_FIELD_NAME = "coder"
     
     private const val UNINITIALIZED_OFFSET = -1L
     private const val LATIN1_CODER_VALUE = 0.toByte()
 
     private val unsafe: Unsafe?
     private val valueOffset: Long
     private val coderOffset: Long
 
     init {
         var u: Unsafe? = null
         var vOff = UNINITIALIZED_OFFSET
         var cOff = UNINITIALIZED_OFFSET
         try {
             val field = Unsafe::class.java.getDeclaredField(UNSAFE_FIELD_NAME)
             field.isAccessible = true
             u = field.get(null) as Unsafe
 
             val valueField = String::class.java.getDeclaredField(STRING_VALUE_FIELD_NAME)
             vOff = u.objectFieldOffset(valueField)
 
             val coderField = String::class.java.getDeclaredField(STRING_CODER_FIELD_NAME)
             cOff = u.objectFieldOffset(coderField)
         } catch (e: Throwable) {
             // ignore, Java 8 or encapsulated module
         }
         unsafe = u
         valueOffset = vOff
         coderOffset = cOff
     }
 
     actual fun extractLatin1Bytes(s: String): ByteArray? {
         if (unsafe == null || valueOffset == UNINITIALIZED_OFFSET || coderOffset == UNINITIALIZED_OFFSET) return null
         val coder = unsafe.getByte(s, coderOffset)
         if (coder != LATIN1_CODER_VALUE) return null
         return unsafe.getObject(s, valueOffset) as? ByteArray
     }
 }