Package io.objectbox.flatbuffers

Class Utf8.DecodeUtil

java.lang.Object
io.objectbox.flatbuffers.Utf8.DecodeUtil
Enclosing class:
Utf8
static class Utf8.DecodeUtil extends Object
Utility methods for decoding bytes into String. Callers are responsible for extracting bytes (possibly using Unsafe methods), and checking remaining bytes. All other UTF-8 validity checks and codepoint conversion happen in this class.

  • Constructor Summary

    Constructors
    Constructor
    Description
    DecodeUtil()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    (package private) static void
    handleFourBytes(byte byte1, byte byte2, byte byte3, byte byte4, char[] resultArr, int resultPos)
     
    (package private) static void
    handleOneByte(byte byte1, char[] resultArr, int resultPos)
     
    (package private) static void
    handleThreeBytes(byte byte1, byte byte2, byte byte3, char[] resultArr, int resultPos)
     
    (package private) static void
    handleTwoBytes(byte byte1, byte byte2, char[] resultArr, int resultPos)
     
    private static char
    highSurrogate(int codePoint)
     
    private static boolean
    isNotTrailingByte(byte b)
    Returns whether the byte is not a valid continuation of the form '10XXXXXX'.
    (package private) static boolean
    isOneByte(byte b)
    Returns whether this is a single-byte codepoint (i.e., ASCII) with the form '0XXXXXXX'.
    (package private) static boolean
    isThreeBytes(byte b)
    Returns whether this is a three-byte codepoint with the form '110XXXXX'.
    (package private) static boolean
    isTwoBytes(byte b)
    Returns whether this is a two-byte codepoint with the form '10XXXXXX'.
    private static char
    lowSurrogate(int codePoint)
     
    private static int
    trailingByteValue(byte b)
    Returns the actual value of the trailing byte (removes the prefix '10') for composition.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • DecodeUtil

      DecodeUtil()

  • Method Details

    • isOneByte

      static boolean isOneByte(byte b)
      Returns whether this is a single-byte codepoint (i.e., ASCII) with the form '0XXXXXXX'.

    • isTwoBytes

      static boolean isTwoBytes(byte b)
      Returns whether this is a two-byte codepoint with the form '10XXXXXX'.

    • isThreeBytes

      static boolean isThreeBytes(byte b)
      Returns whether this is a three-byte codepoint with the form '110XXXXX'.

    • handleOneByte

      static void handleOneByte(byte byte1, char[] resultArr, int resultPos)

    • handleTwoBytes

      static void handleTwoBytes(byte byte1, byte byte2, char[] resultArr, int resultPos) throws IllegalArgumentException
      Throws:
      IllegalArgumentException

    • handleThreeBytes

      static void handleThreeBytes(byte byte1, byte byte2, byte byte3, char[] resultArr, int resultPos) throws IllegalArgumentException
      Throws:
      IllegalArgumentException

    • handleFourBytes

      static void handleFourBytes(byte byte1, byte byte2, byte byte3, byte byte4, char[] resultArr, int resultPos) throws IllegalArgumentException
      Throws:
      IllegalArgumentException

    • isNotTrailingByte

      private static boolean isNotTrailingByte(byte b)
      Returns whether the byte is not a valid continuation of the form '10XXXXXX'.

    • trailingByteValue

      private static int trailingByteValue(byte b)
      Returns the actual value of the trailing byte (removes the prefix '10') for composition.

    • highSurrogate

      private static char highSurrogate(int codePoint)

    • lowSurrogate

      private static char lowSurrogate(int codePoint)