Package codechicken.mixin.scala

Class ByteCodecs

java.lang.Object
codechicken.mixin.scala.ByteCodecs
public class ByteCodecs extends Object
This class is borrowed from scala-reflect found at scala.reflect.internal.pickling.ByteCodecs.

It is unmodified, except for its conversion from Scala to Java and minor syntactic cleanups.

Created by covers1624 on 18/1/24.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ByteCodecs()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static byte[]
    avoidZero(byte[] src)
    Increment each element by 1, then map 0x00 to 0xC0 0x80.
    static int
    decode(byte[] xs)
    Destructively decodes array xs and returns the length of the decoded array.
    static int
    decode7to8(byte[] src, int srclen)
    In-place
    static byte[]
    encode(byte[] xs)
     
    static byte[]
    encode8to7(byte[] src)
    Returns a new array
    static int
    regenerateZero(byte[] src)
    Map 0xC0 0x80 to 0x00, then subtract 1 from each element.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ByteCodecs

      public ByteCodecs()

  • Method Details

    • avoidZero

      public static byte[] avoidZero(byte[] src)
      Increment each element by 1, then map 0x00 to 0xC0 0x80. Returns a fresh array.

    • regenerateZero

      public static int regenerateZero(byte[] src)
      Map 0xC0 0x80 to 0x00, then subtract 1 from each element. In-place.

    • encode8to7

      public static byte[] encode8to7(byte[] src)
      Returns a new array

    • decode7to8

      public static int decode7to8(byte[] src, int srclen)
      In-place

    • encode

      public static byte[] encode(byte[] xs)

    • decode

      public static int decode(byte[] xs)
      Destructively decodes array xs and returns the length of the decoded array.

      Sometimes returns (length+1) of the decoded array. Example:

      scala> val enc = scala.reflect.internal.pickling.ByteCodecs.encode(Array(1,2,3)) enc: Array[Byte] = Array(2, 5, 13, 1)

      scala> scala.reflect.internal.pickling.ByteCodecs.decode(enc) res43: Int = 4

      scala> enc res44: Array[Byte] = Array(1, 2, 3, 0)

      However, this does not always happen.