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prefunding

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tim
2025-11-11 18:33:14 -04:00
parent ddfe7651ea
commit 70960630ce
8 changed files with 722 additions and 69 deletions
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14
src/IPartyPool.sol
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@@ -1,12 +1,12 @@
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.30;
import "../lib/openzeppelin-contracts/contracts/interfaces/IERC3156FlashBorrower.sol";
import "./IOwnable.sol";
import "./LMSRStabilized.sol";
import "./NativeWrapper.sol";
import {IERC20Metadata} from "../lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {IERC3156FlashBorrower} from "../lib/openzeppelin-contracts/contracts/interfaces/IERC3156FlashBorrower.sol";
import {IERC20} from "../lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "../lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {IOwnable} from "./IOwnable.sol";
import {LMSRStabilized} from "./LMSRStabilized.sol";
import {NativeWrapper} from "./NativeWrapper.sol";
/// @title PartyPool - LMSR-backed multi-asset pool with LP ERC20 token
/// @notice A multi-asset liquidity pool backed by the LMSRStabilized pricing model.
@@ -178,7 +178,7 @@ interface IPartyPool is IERC20Metadata, IOwnable {
/// @dev This function transfers the exact gross input (including fee) from payer and sends the computed output to receiver.
/// Non-standard tokens (fee-on-transfer, rebasers) are rejected via balance checks.
/// @param payer address of the account that pays for the swap
/// @param selector If zero, then regular ERC20 approvals must be given by the payere to the pool to move the required input amount. If this selector is nonzero, then a callback style funding mechanism is used where the given selector is invoked on the payer, passing the arguments of (address inputToken, uint256 inputAmount). The callback function must send the given amount of input coin to the pool in ordr to continue the swap transaction, otherwise "Insufficient funds" is thrown.
/// @param fundingSelector If set to USE_APPROVALS, then the payer must use regular ERC20 approvals to authorize the pool to move the required input amount. If this fundingSelector is USE_PREFUNDING, then all of the input amount is expected to have already been sent to the pool and no additional transfers are needed. Refunds of excess input amount are NOT provided and it is illegal to use this funding method with a limit price. Otherwise, for any other fundingSelector value, a callback style funding mechanism is used where the given selector is invoked on the payer, passing the arguments of (address inputToken, uint256 inputAmount). The callback function must send the given amount of input coin to the pool in order to continue the swap transaction, otherwise "Insufficient funds" is thrown.
/// @param receiver address that will receive the output tokens
/// @param inputTokenIndex index of input asset
/// @param outputTokenIndex index of output asset
@@ -188,7 +188,7 @@ interface IPartyPool is IERC20Metadata, IOwnable {
/// @return amountIn actual input used (uint256), amountOut actual output sent (uint256), inFee fee taken from the input (uint256)
function swap(
address payer,
bytes4 selector,
bytes4 fundingSelector,
address receiver,
uint256 inputTokenIndex,
uint256 outputTokenIndex,