Coverage Summary for Class: GhostJsonFlatReaderCharsKt (com.ghost.serialization.parser)

 @file:OptIn(InternalGhostApi::class)
 
 package com.ghost.serialization.parser
 
 import com.ghost.serialization.InternalGhostApi
 import com.ghost.serialization.parser.GhostJsonConstants as C
 
 /**
  * Reads a JSON string value that must contain exactly one UTF-16 [Char].
  *
  * Fast path: single unescaped ASCII/Latin-1 byte between quotes — no [String] allocation.
  */
 fun GhostJsonFlatReader.nextChar(): Char {
     if (nextNonWhitespace() != C.QUOTE_INT) {
         throwError(C.ERR_EXPECTED_QUOTE)
     }
 
     val start = position
     val localData = rawData
     val scanResult = scanStringImpl(start, limit) { localData[it].toInt() and C.BYTE_MASK }
 
     if (scanResult != -1L) {
         val length = ((scanResult and C.SCAN_LENGTH_MASK) ushr C.SCAN_LENGTH_SHIFT).toInt()
         val only7Bit = (scanResult and C.SCAN_7BIT_BIT) != 0L
         val end = start + length
         if (length == C.SINGLE_CHAR_JSON_LENGTH && only7Bit) {
             position = end + 1
             nextTokenByte = C.RESET_TOKEN_BYTE
             return (localData[start].toInt() and C.BYTE_MASK).toChar()
         }
         if (length == 0) {
             position = end + 1
             nextTokenByte = C.RESET_TOKEN_BYTE
             throwError(C.ERR_EXPECTED_SINGLE_CHAR_STRING)
         }
     }
 
     val decoded = readQuotedStringFromContentStart(start)
     if (decoded.length != C.SINGLE_CHAR_JSON_LENGTH) {
         throwError(C.ERR_SINGLE_CHAR_STRING_WRONG_LENGTH + decoded.length)
     }
     return decoded[0]
 }
 
 private fun GhostJsonFlatReader.readQuotedStringFromContentStart(contentStart: Int): String {
     position = contentStart - 1
     return readQuotedString()
 }