class="kw">package com.hypixel.hytale.protocol.io;

class="kw">import io.netty.buffer.ByteBuf;
class="kw">import java.lang.foreign.MemorySegment;
class="kw">import java.lang.foreign.ValueLayout;
class="kw">import java.lang.foreign.ValueLayout.OfInt;
class="kw">import java.lang.foreign.ValueLayout.OfShort;
class="kw">import java.nio.ByteOrder;
class="kw">import javax.annotation.Nonnull;

class="kw">public class="kw">final class VarInt {
   class="kw">private class="kw">static class="kw">final OfShort BE_SHORT = ValueLayout.JAVA_SHORT_UNALIGNED.withOrder(ByteOrder.BIG_ENDIAN);
   class="kw">private class="kw">static class="kw">final OfInt BE_INT = ValueLayout.JAVA_INT_UNALIGNED.withOrder(ByteOrder.BIG_ENDIAN);

   class="kw">private VarInt() {
   }

   class="kw">public class="kw">static void write(@Nonnull ByteBuf var0, int var1) {
      if (var1 < 0) {
         throw new IllegalArgumentException("VarInt cannot encode negative values: " + var1);
      }

      if ((var1 & -128) == 0) {
         var0.writeByte(var1);
      } else if ((var1 & -16384) == 0) {
         var0.writeShort((var1 & 127 | 128) << 8 | var1 >>> 7);
      } else if ((var1 & -2097152) == 0) {
         var0.writeMedium((var1 & 127 | 128) << 16 | (var1 >>> 7 & 127 | 128) << 8 | var1 >>> 14);
      } else if ((var1 & -268435456) == 0) {
         var0.writeInt((var1 & 127 | 128) << 24 | (var1 >>> 7 & 127 | 128) << 16 | (var1 >>> 14 & 127 | 128) << 8 | var1 >>> 21);
      } else {
         var0.writeInt((var1 & 127 | 128) << 24 | (var1 >>> 7 & 127 | 128) << 16 | (var1 >>> 14 & 127 | 128) << 8 | var1 >>> 21 & 127 | 128);
         var0.writeByte(var1 >>> 28);
      }
   }

   class="kw">public class="kw">static int read(@Nonnull ByteBuf var0) {
      int var1 = var0.readByte();
      int var2 = var1 & 127;
      if ((var1 & 128) == 0) {
         class="kw">return var2;
      } else {
         byte var3 = var0.readByte();
         var2 |= (var3 & 127) << 7;
         if ((var3 & 128) == 0) {
            class="kw">return var2;
         } else {
            var3 = var0.readByte();
            var2 |= (var3 & 127) << 14;
            if ((var3 & 128) == 0) {
               class="kw">return var2;
            } else {
               var3 = var0.readByte();
               var2 |= (var3 & 127) << 21;
               if ((var3 & 128) == 0) {
                  class="kw">return var2;
               } else {
                  var3 = var0.readByte();
                  var2 |= (var3 & 127) << 28;
                  if ((var3 & 128) == 0) {
                     class="kw">return var2;
                  } else {
                     throw new ProtocolException("VarInt exceeds maximum length (5 bytes)");
                  }
               }
            }
         }
      }
   }

   class="kw">public class="kw">static int peek(@Nonnull ByteBuf var0, int var1) {
      int var2 = var0.writerIndex();
      if (var1 >= var2) {
         class="kw">return -1;
      }

      int var3 = var0.getByte(var1);
      int var4 = var3 & 127;
      if ((var3 & 128) == 0) {
         class="kw">return var4;
      }

      if (var1 + 1 >= var2) {
         class="kw">return -1;
      }

      byte var5 = var0.getByte(var1 + 1);
      var4 |= (var5 & 127) << 7;
      if ((var5 & 128) == 0) {
         class="kw">return var4;
      }

      if (var1 + 2 >= var2) {
         class="kw">return -1;
      }

      var5 = var0.getByte(var1 + 2);
      var4 |= (var5 & 127) << 14;
      if ((var5 & 128) == 0) {
         class="kw">return var4;
      }

      if (var1 + 3 >= var2) {
         class="kw">return -1;
      }

      var5 = var0.getByte(var1 + 3);
      var4 |= (var5 & 127) << 21;
      if ((var5 & 128) == 0) {
         class="kw">return var4;
      }

      if (var1 + 4 >= var2) {
         class="kw">return -1;
      }

      var5 = var0.getByte(var1 + 4);
      var4 |= (var5 & 127) << 28;
      class="kw">return (var5 & 128) == 0 ? var4 : -1;
   }

   class="kw">public class="kw">static int length(@Nonnull ByteBuf var0, int var1) {
      int var2 = var0.writerIndex();
      if (var1 >= var2) {
         class="kw">return -1;
      } else if ((var0.getByte(var1) & 128) == 0) {
         class="kw">return 1;
      } else if (var1 + 1 >= var2) {
         class="kw">return -1;
      } else if ((var0.getByte(var1 + 1) & 128) == 0) {
         class="kw">return 2;
      } else if (var1 + 2 >= var2) {
         class="kw">return -1;
      } else if ((var0.getByte(var1 + 2) & 128) == 0) {
         class="kw">return 3;
      } else if (var1 + 3 >= var2) {
         class="kw">return -1;
      } else if ((var0.getByte(var1 + 3) & 128) == 0) {
         class="kw">return 4;
      } else if (var1 + 4 >= var2) {
         class="kw">return -1;
      } else {
         class="kw">return (var0.getByte(var1 + 4) & 128) == 0 ? 5 : -1;
      }
   }

   class="kw">public class="kw">static int length(@Nonnull MemorySegment var0, int var1) {
      long var2 = getWithLength(var0, var1);
      class="kw">return var2 == -1L ? -1 : (int)(var2 >>> 32);
   }

   class="kw">public class="kw">static int set(@Nonnull MemorySegment var0, int var1, int var2) {
      if (var2 < 0) {
         throw new IllegalArgumentException("VarInt cannot encode negative values: " + var2);
      } else if ((var2 & -128) == 0) {
         var0.set(PacketIO.PROTO_BYTE, var1, (byte)var2);
         class="kw">return 1;
      } else if ((var2 & -16384) == 0) {
         var0.set(BE_SHORT, var1, (short)((var2 & 127 | 128) << 8 | var2 >>> 7));
         class="kw">return 2;
      } else if ((var2 & -2097152) == 0) {
         var0.set(BE_SHORT, var1, (short)((var2 & 127 | 128) << 8 | var2 >>> 7 & 127 | 128));
         var0.set(PacketIO.PROTO_BYTE, var1 + 2, (byte)(var2 >>> 14));
         class="kw">return 3;
      } else if ((var2 & -268435456) == 0) {
         var0.set(BE_INT, var1, (var2 & 127 | 128) << 24 | (var2 >>> 7 & 127 | 128) << 16 | (var2 >>> 14 & 127 | 128) << 8 | var2 >>> 21);
         class="kw">return 4;
      } else {
         var0.set(BE_INT, var1, (var2 & 127 | 128) << 24 | (var2 >>> 7 & 127 | 128) << 16 | (var2 >>> 14 & 127 | 128) << 8 | var2 >>> 21 & 127 | 128);
         var0.set(PacketIO.PROTO_BYTE, var1 + 4, (byte)(var2 >>> 28));
         class="kw">return 5;
      }
   }

   class="kw">public class="kw">static int get(@Nonnull MemorySegment var0, int var1) {
      long var2 = getWithLength(var0, var1);
      class="kw">return var2 == -1L ? -1 : (int)var2;
   }

   class="kw">public class="kw">static long getWithLength(@Nonnull MemorySegment var0, int var1) {
      int var2 = (int)var0.byteSize();
      if (var1 >= var2) {
         class="kw">return -1L;
      } else {
         int var3 = var0.get(PacketIO.PROTO_BYTE, var1);
         int var4 = var3 & 127;
         if ((var3 & 128) == 0) {
            class="kw">return 4294967296L | var4;
         } else if (var1 + 1 >= var2) {
            class="kw">return -1L;
         } else {
            byte var5 = var0.get(PacketIO.PROTO_BYTE, var1 + 1);
            var4 |= (var5 & 127) << 7;
            if ((var5 & 128) == 0) {
               class="kw">return var5 == 0 ? -1L : 8589934592L | var4;
            } else if (var1 + 2 >= var2) {
               class="kw">return -1L;
            } else {
               var5 = var0.get(PacketIO.PROTO_BYTE, var1 + 2);
               var4 |= (var5 & 127) << 14;
               if ((var5 & 128) == 0) {
                  class="kw">return var5 == 0 ? -1L : 12884901888L | var4;
               } else if (var1 + 3 >= var2) {
                  class="kw">return -1L;
               } else {
                  var5 = var0.get(PacketIO.PROTO_BYTE, var1 + 3);
                  var4 |= (var5 & 127) << 21;
                  if ((var5 & 128) == 0) {
                     class="kw">return var5 == 0 ? -1L : 17179869184L | var4;
                  } else if (var1 + 4 >= var2) {
                     class="kw">return -1L;
                  } else {
                     var5 = var0.get(PacketIO.PROTO_BYTE, var1 + 4);
                     var4 |= (var5 & 7) << 28;
                     if ((var5 & 128) != 0) {
                        class="kw">return -1L;
                     } else {
                        class="kw">return var5 >= 1 && var5 <= 7 ? 21474836480L | var4 : -1L;
                     }
                  }
               }
            }
         }
      }
   }

   class="kw">public class="kw">static int size(int var0) {
      if ((var0 & -128) == 0) {
         class="kw">return 1;
      } else if ((var0 & -16384) == 0) {
         class="kw">return 2;
      } else if ((var0 & -2097152) == 0) {
         class="kw">return 3;
      } else {
         class="kw">return (var0 & -268435456) == 0 ? 4 : 5;
      }
   }
}