BagiHasilHook

A trading tax hook. It takes a cut of every trade and only lets approved callers create pools.

• Takes a cut of every trade

  On top of the normal pool fee, it keeps a share of each trade. The fee is paid out in the same trade.

  The code that does this (afterSwap):

  function afterSwap(address, PoolKey calldata key, SwapParams calldata params, BalanceDelta delta, bytes calldata)
      external
      hanyaPoolManager
      returns (bytes4, int128)
  {
      bool exactInput = params.amountSpecified < 0;
      bool specifiedToken0 = exactInput == params.zeroForOne;
      (Currency mataUang, int128 jumlah) =
          specifiedToken0 ? (key.currency1, delta.amount1()) : (key.currency0, delta.amount0());
      if (jumlah < 0) jumlah = -jumlah;
  
      uint256 bagian = hitungBagian(key.fee, exactInput, uint256(uint128(jumlah)));
      if (bagian == 0) return (IHooks.afterSwap.selector, 0);
  
      poolManager.take(mataUang, penerima, bagian);
      emit BagiHasil(key.toId(), mataUang, penerima, bagian);
      return (IHooks.afterSwap.selector, int128(int256(bagian)));
  }

• Only approved callers create pools

  New pools with this hook can only be created by approved callers, for example its own factory or launcher.

  The code that does this (beforeInitialize):

  function beforeInitialize(address, PoolKey calldata key, uint160) external view hanyaPoolManager returns (bytes4) {
      if (tx.origin != owner) revert BukanOwner();
      if (LPFeeLibrary.isDynamicFee(key.fee) || key.fee == 0 || key.fee > FEE_LP_MAKS) {
          revert FeeTidakDidukung(key.fee);
      }
      return IHooks.beforeInitialize.selector;
  }

Who controls it: It has an admin address, but no admin-only settings in its own code. The code cannot be changed.

Based on the hook’s published code.What do these labels mean?