38bc0f7057
SPDX license: - Restore GPL-3.0-or-later SPDX header to DeployBase.sol (removed by the em-dash sed fix in an earlier commit). SeedSwapper deduplication: - Extract SeedSwapper into onchain/script/DeployCommon.sol — a single canonical definition shared by both deploy scripts. This eliminates duplicate Foundry artifacts (previously both DeployLocal.sol and DeployBase.sol produced a SeedSwapper artifact, causing ambiguity for verification and coverage tools). - Remove inline SeedSwapper and redundant IWETH9 import from DeployLocal.sol and DeployBase.sol; add `import "./DeployCommon.sol"`. SeedSwapper hardening (in DeployCommon.sol): - Replace magic-literal price sentinels with named constants SQRT_PRICE_LIMIT_MIN / SQRT_PRICE_LIMIT_MAX. - Wrap both weth.transfer() calls with require() so a non-standard WETH9 false-return is caught rather than silently ignored. - Add post-swap WETH sweep in executeSeedBuy(): if the price limit is reached before the full input is spent, the residual WETH balance is returned to `recipient` instead of being stranded in the contract. bootstrap-common.sh: - Normalise cumulativeVolume output through `cast to-dec` before the string comparison, guarding against a future change in cast output format (decimal vs hex). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
68 lines
3.3 KiB
Solidity
68 lines
3.3 KiB
Solidity
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
pragma solidity ^0.8.19;
|
|
|
|
import { IWETH9 } from "../src/interfaces/IWETH9.sol";
|
|
import "@uniswap-v3-core/interfaces/IUniswapV3Pool.sol";
|
|
|
|
/**
|
|
* @title SeedSwapper
|
|
* @notice One-shot helper deployed during Deploy*.run() to perform the initial seed buy.
|
|
* Executing a small buy before the protocol opens eliminates the cumulativeVolume==0
|
|
* front-run window: after the seed recenter, VWAP has a real anchor and the bootstrap
|
|
* path in LiquidityManager.recenter() is never reachable by external users.
|
|
*
|
|
* @dev Deployed by both DeployLocal and DeployBase; extracted here to avoid duplicate
|
|
* Foundry artifacts and drift between the two deploy scripts.
|
|
*/
|
|
contract SeedSwapper {
|
|
// TickMath sentinel values — the pool will consume as much input as available in-range.
|
|
uint160 private constant SQRT_PRICE_LIMIT_MIN = 4295128740; // TickMath.MIN_SQRT_RATIO + 1
|
|
uint160 private constant SQRT_PRICE_LIMIT_MAX = // TickMath.MAX_SQRT_RATIO - 1
|
|
1461446703485210103287273052203988822378723970341;
|
|
|
|
IWETH9 private immutable weth;
|
|
IUniswapV3Pool private immutable pool;
|
|
bool private immutable token0isWeth;
|
|
|
|
constructor(address _weth, address _pool, bool _token0isWeth) {
|
|
weth = IWETH9(_weth);
|
|
pool = IUniswapV3Pool(_pool);
|
|
token0isWeth = _token0isWeth;
|
|
}
|
|
|
|
/// @notice Wraps msg.value ETH to WETH, swaps it for KRK (buying KRK), and sweeps any
|
|
/// unconsumed WETH back to `recipient`. The fee generated by the swap is captured
|
|
/// in the LM's anchor position so the subsequent recenter() call will collect a
|
|
/// non-zero ethFee and record VWAP.
|
|
///
|
|
/// @dev If the pool exhausts in-range liquidity before spending all WETH (price-limit
|
|
/// sentinel reached), `wethDelta < msg.value` in the callback and the remainder
|
|
/// stays as WETH in this contract. The post-swap sweep returns it to `recipient`
|
|
/// so no funds are stranded.
|
|
function executeSeedBuy(address recipient) external payable {
|
|
weth.deposit{ value: msg.value }();
|
|
|
|
// zeroForOne=true when WETH is token0: sell token0(WETH) -> token1(KRK)
|
|
// zeroForOne=false when WETH is token1: sell token1(WETH) -> token0(KRK)
|
|
bool zeroForOne = token0isWeth;
|
|
uint160 priceLimit = zeroForOne ? SQRT_PRICE_LIMIT_MIN : SQRT_PRICE_LIMIT_MAX;
|
|
|
|
pool.swap(recipient, zeroForOne, int256(msg.value), priceLimit, "");
|
|
|
|
// Sweep any unconsumed WETH to recipient (occurs when price limit is reached
|
|
// before the full input is spent).
|
|
uint256 leftover = weth.balanceOf(address(this));
|
|
if (leftover > 0) {
|
|
require(weth.transfer(recipient, leftover), "SeedSwapper: WETH sweep failed");
|
|
}
|
|
}
|
|
|
|
/// @notice Uniswap V3 callback: pay the WETH owed for the seed buy.
|
|
function uniswapV3SwapCallback(int256 amount0Delta, int256 amount1Delta, bytes calldata) external {
|
|
require(msg.sender == address(pool), "SeedSwapper: only pool");
|
|
int256 wethDelta = token0isWeth ? amount0Delta : amount1Delta;
|
|
if (wethDelta > 0) {
|
|
require(weth.transfer(msg.sender, uint256(wethDelta)), "SeedSwapper: WETH transfer failed");
|
|
}
|
|
}
|
|
}
|