Qian V2 Contracts

Onchain token launch with permanently locked liquidity and DEX routing (Uniswap v3 + v4). No admin keys, no mint/blacklist. MIT licensed. Deployed addresses in README.
2026-07-17 02:36:14 +00:00
commit 5f6db506c9
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+import "./IPoolManager.sol";
+
+/**
+ * @title IConfigurableHook
+ * @notice Generic interface for hooks that can be configured by the factory
+ * @dev All hooks that want to be auto-configured by QianFactoryV4 must implement this interface
+ * 
+ * This allows the factory to remain hook-agnostic - new hooks can be added
+ * without modifying the factory contract. Each hook:
+ * 1. Defines its own config format (decoded from bytes)
+ * 2. Validates its own constraints (tax limits, thresholds, etc.)
+ * 3. Stores per-pool configuration
+ * 
+ * Example config encoding:
+ * - AutoBuyBurnHook: abi.encode(uint16 buyTaxBps, uint16 sellTaxBps, uint256 threshold)
+ * - QianTaxHook: abi.encode(uint16 buyTaxBps, uint16 sellTaxBps, uint16 snipeStartBps, uint16 snipeEndBps, uint32 snipeDecaySeconds)
+ * - FutureHook: abi.encode(param1, param2, param3, ...)
+ */
+interface IConfigurableHook {
+    /**
+     * @notice Configure the hook for a newly deployed token's pool
+     * @param poolId The pool identifier (keccak256 of PoolKey)
+     * @param tokenAddress The token address being configured
+     * @param config Hook-specific configuration data (abi.encoded)
+     * @dev Called by factory during deployCoin(). Must validate and store config.
+     *      Should revert if already configured (immutability) or invalid params.
+     */
+    function configureHook(
+        bytes32 poolId,
+        address tokenAddress,
+        bytes calldata config
+    ) external;
+    
+    /**
+     * @notice Get the pool ID from a PoolKey
+     * @param key The pool key
+     * @return poolId The computed pool identifier
+     */
+    function getPoolId(PoolKey calldata key) external pure returns (bytes32);
+    
+    /**
+     * @notice Check if a pool has been configured for this hook
+     * @param poolId The pool identifier
+     * @return True if the pool is configured and enabled
+     */
+    function isConfigured(bytes32 poolId) external view returns (bool);
+}
+
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+/// @notice Currency type for Uniswap V4
+/// Wraps an address to represent a token or native ETH
+type Currency is address;
+
+/// @notice Currency library for V4
+library CurrencyLibrary {
+    /// @notice Wrap an address as Currency
+    function wrap(address token) internal pure returns (Currency) {
+        return Currency.wrap(token);
+    }
+    
+    /// @notice Unwrap Currency to address
+    function unwrap(Currency currency) internal pure returns (address) {
+        return Currency.unwrap(currency);
+    }
+    
+    /// @notice Native ETH currency
+    function native() internal pure returns (Currency) {
+        return Currency.wrap(address(0));
+    }
+    
+    /// @notice Check if currency is native ETH
+    function isNative(Currency currency) internal pure returns (bool) {
+        return Currency.unwrap(currency) == address(0);
+    }
+}
+
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+/// @notice Optional interface for hooks to expose fee configuration
+/// This allows the factory/fee collector to understand hook fee behavior
+interface IHookFeeConfig {
+    /// @notice Get the fee split configuration
+    /// @return platformBps Platform fee in basis points (out of 10000)
+    /// @return hookBps Hook fee in basis points (out of 10000)
+    /// @return creatorBps Creator fee in basis points (out of 10000)
+    /// @dev Sum should equal 10000
+    function getFeeSplit() external view returns (uint256 platformBps, uint256 hookBps, uint256 creatorBps);
+    
+    /// @notice Get hook name/identifier
+    function getHookName() external view returns (string memory);
+}
+
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+import "./IPoolManager.sol";
+
+/// @notice Swap parameters for hook callbacks
+struct SwapParams {
+    bool zeroForOne;
+    int256 amountSpecified;
+    uint160 sqrtPriceLimitX96;
+}
+
+/// @notice Uniswap V4 Hooks interface
+/// Hooks can implement various callbacks to customize pool behavior
+interface IHooks {
+    /// @notice Called before a pool is initialized
+    function beforeInitialize(address sender, PoolKey calldata key, uint160 sqrtPriceX96) external returns (bytes4);
+    
+    /// @notice Called after a pool is initialized
+    function afterInitialize(address sender, PoolKey calldata key, uint160 sqrtPriceX96, int24 tick) external returns (bytes4);
+    
+    /// @notice Called before a swap
+    function beforeSwap(address sender, PoolKey calldata key, SwapParams calldata params, bytes calldata hookData) external returns (bytes4, BeforeSwapDelta, uint24);
+    
+    /// @notice Called after a swap
+    function afterSwap(address sender, PoolKey calldata key, SwapParams calldata params, BalanceDelta delta, bytes calldata hookData) external returns (bytes4, int128);
+    
+    /// @notice Called before liquidity is added
+    function beforeAddLiquidity(address sender, PoolKey calldata key, ModifyLiquidityParams calldata params, bytes calldata hookData) external returns (bytes4);
+    
+    /// @notice Called after liquidity is added
+    function afterAddLiquidity(address sender, PoolKey calldata key, ModifyLiquidityParams calldata params, BalanceDelta delta, BalanceDelta feesAccrued, bytes calldata hookData) external returns (bytes4, BalanceDelta);
+    
+    /// @notice Called before liquidity is removed
+    function beforeRemoveLiquidity(address sender, PoolKey calldata key, ModifyLiquidityParams calldata params, bytes calldata hookData) external returns (bytes4);
+    
+    /// @notice Called after liquidity is removed
+    function afterRemoveLiquidity(address sender, PoolKey calldata key, ModifyLiquidityParams calldata params, BalanceDelta delta, BalanceDelta feesAccrued, bytes calldata hookData) external returns (bytes4, BalanceDelta);
+    
+    /// @notice Called before a donate
+    function beforeDonate(address sender, PoolKey calldata key, uint256 amount0, uint256 amount1, bytes calldata hookData) external returns (bytes4);
+    
+    /// @notice Called after a donate
+    function afterDonate(address sender, PoolKey calldata key, uint256 amount0, uint256 amount1, bytes calldata hookData) external returns (bytes4);
+}
+
+/// @notice Before swap delta type - encodes (specifiedDelta, unspecifiedDelta)
+type BeforeSwapDelta is int256;
+
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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+import "./ICurrency.sol";
+import "./IHooks.sol";
+
+// BalanceDelta is a packed int256 where:
+// - Upper 128 bits = amount0 (int128)
+// - Lower 128 bits = amount1 (int128)
+type BalanceDelta is int256;
+
+/// @notice Library for getting amount0/amount1 from BalanceDelta
+library BalanceDeltaLibrary {
+    function amount0(BalanceDelta balanceDelta) internal pure returns (int128 _amount0) {
+        assembly ("memory-safe") {
+            _amount0 := sar(128, balanceDelta)
+        }
+    }
+
+    function amount1(BalanceDelta balanceDelta) internal pure returns (int128 _amount1) {
+        assembly ("memory-safe") {
+            _amount1 := signextend(15, balanceDelta)
+        }
+    }
+}
+
+/// @notice PoolKey identifies a V4 pool
+struct PoolKey {
+    Currency currency0;
+    Currency currency1;
+    uint24 fee;
+    int24 tickSpacing;
+    IHooks hooks;
+}
+
+/// @notice Parameters for modifyLiquidity
+struct ModifyLiquidityParams {
+    int24 tickLower;
+    int24 tickUpper;
+    int256 liquidityDelta;
+    bytes32 salt;
+}
+
+/// @notice Interface for Uniswap V4 PoolManager
+interface IPoolManager {
+    /// @notice Initialize the state for a given pool
+    function initialize(PoolKey memory key, uint160 sqrtPriceX96) external returns (int24 tick);
+
+    /// @notice Modify the liquidity for the given pool
+    function modifyLiquidity(PoolKey memory key, ModifyLiquidityParams memory params, bytes calldata hookData)
+        external
+        returns (BalanceDelta callerDelta, BalanceDelta feesAccrued);
+
+    /// @notice All interactions on the contract that account deltas require unlocking
+    function unlock(bytes calldata data) external returns (bytes memory);
+
+    /// @notice Sync the currency to its current balance in the PoolManager
+    function sync(Currency currency) external;
+
+    /// @notice Settle the currency, paying what is owed
+    function settle() external payable returns (uint256 paid);
+    
+    /// @notice Take currency from the PoolManager
+    /// @param currency The currency to take
+    /// @param to The address to receive the currency
+    /// @param amount The amount to take
+    function take(Currency currency, address to, uint256 amount) external;
+    
+    /// @notice Execute a swap
+    /// @param key The pool key
+    /// @param params The swap parameters
+    /// @param hookData Any data to be passed to hooks
+    function swap(PoolKey memory key, SwapParams memory params, bytes calldata hookData)
+        external
+        returns (BalanceDelta swapDelta);
+}
+
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+/// @notice Interface for the callback executed when an address unlocks the pool manager
+interface IUnlockCallback {
+    /// @notice Called by the pool manager on `msg.sender` when the manager is unlocked
+    /// @param data The data that was passed to the call to unlock
+    /// @return Any data that you want to be returned from the unlock call
+    function unlockCallback(bytes calldata data) external returns (bytes memory);
+}
+
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+// SPDX-License-Identifier: MIT
+// Qian Exchange - https://qian.ag
+pragma solidity ^0.8.24;
+
+interface IWETH {
+    function deposit() external payable;
+    function withdraw(uint256 amount) external;
+    function transfer(address to, uint256 amount) external returns (bool);
+    function transferFrom(address from, address to, uint256 amount) external returns (bool);
+    function approve(address spender, uint256 amount) external returns (bool);
+    function balanceOf(address account) external view returns (uint256);
+}
+