feat: Added imports in a different file as too long, implemented getLimits and getTokens
This commit is contained in:
domenicodev
@@ -2,7 +2,8 @@
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pragma experimental ABIEncoderV2;
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pragma solidity ^0.8.13;
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import {IERC20, ISwapAdapter} from "src/interfaces/ISwapAdapter.sol";
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/// @dev Wrapped imports (incl. ISwapAdapter and IERC20) are included in utils
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import "./AngleUtils.sol";
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/// @title AngleAdapter
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contract AngleAdapter is ISwapAdapter {
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@@ -13,6 +14,7 @@ contract AngleAdapter is ISwapAdapter {
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transmuter = _transmuter;
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}
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/// @inheritdoc ISwapAdapter
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function price(
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bytes32,
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IERC20 _sellToken,
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@@ -38,11 +40,42 @@ contract AngleAdapter is ISwapAdapter {
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revert NotImplemented("TemplateSwapAdapter.swap");
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}
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/// @inheritdoc ISwapAdapter
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/// @dev mint may have no limits, but we underestimate them to make sure, with the same amount of sellToken.
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/// We use the quoteIn (incl. fee), because calculating fee requires a part of the implementation of
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/// the Angle Diamond Storage, and therefore redundant functions and excessive contract size, with an high complexity.
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function getLimits(bytes32, IERC20 sellToken, IERC20 buyToken)
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external
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view
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override
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returns (uint256[] memory limits)
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{
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revert NotImplemented("TemplateSwapAdapter.getLimits");
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limits = new uint256[](2);
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address sellTokenAddress = address(sellToken);
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address buyTokenAddress = address(buyToken);
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if(buyTokenAddress == transmuter.agToken()) { // mint(buy agToken)
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Collateral memory collatInfo = transmuter.getCollateralInfo(sellTokenAddress);
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if(collatInfo.isManaged > 0) {
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limits[0] = LibManager.maxAvailable(collatInfo.managerData.config);
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}
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else {
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limits[0] = sellToken.balanceOf(address(transmuter));
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}
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limits[1] = transmuter.quoteIn(limits[0], sellTokenAddress, buyTokenAddress);
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}
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else { // burn(sell agToken)
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Collateral memory collatInfo = transmuter.getCollateralInfo(buyTokenAddress);
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uint256 collatLimit;
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if(collatInfo.isManaged > 0) {
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collatLimit = LibManager.maxAvailable(collatInfo.managerData.config);
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}
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else {
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collatLimit = buyToken.balanceOf(address(transmuter));
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}
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limits[0] = transmuter.quoteIn(collatLimit, buyTokenAddress, sellTokenAddress);
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limits[1] = collatLimit;
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}
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}
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function getCapabilities(bytes32 poolId, IERC20 sellToken, IERC20 buyToken)
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@@ -52,11 +85,21 @@ contract AngleAdapter is ISwapAdapter {
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revert NotImplemented("TemplateSwapAdapter.getCapabilities");
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}
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function getTokens(bytes32 poolId)
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/// @inheritdoc ISwapAdapter
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/// @dev Since Angle has no pool IDs but supports 3 tokens(agToken and the collaterals),
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/// we return all the available collaterals and the agToken(agEUR)
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function getTokens(bytes32)
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external
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view
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override
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returns (IERC20[] memory tokens)
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{
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revert NotImplemented("TemplateSwapAdapter.getTokens");
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address[] memory collateralsAddresses = transmuter.getCollateralList();
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tokens = new IERC20[](collateralsAddresses.length + 1);
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for(uint256 i = 0; i < collateralsAddresses.length; i++) {
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tokens[i] = IERC20(collateralsAddresses[i]);
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}
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tokens[collateralsAddresses.length] = IERC20(transmuter.agToken());
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}
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function getPoolIds(uint256 offset, uint256 limit)
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@@ -85,39 +128,6 @@ contract AngleAdapter is ISwapAdapter {
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}
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abstract contract ITransmuter {
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struct Tuple6871229 {
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address facetAddress;
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uint8 action;
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bytes4[] functionSelectors;
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}
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struct Tuple1236461 {
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address facetAddress;
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bytes4[] functionSelectors;
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}
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struct Tuple3550792 {
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uint8 isManaged;
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uint8 isMintLive;
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uint8 isBurnLive;
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uint8 decimals;
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uint8 onlyWhitelisted;
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uint216 normalizedStables;
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uint64[] xFeeMint;
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int64[] yFeeMint;
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uint64[] xFeeBurn;
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int64[] yFeeBurn;
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bytes oracleConfig;
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bytes whitelistData;
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Tuple5479340 managerData;
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}
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struct Tuple5479340 {
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address[] subCollaterals;
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bytes config;
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}
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function diamondCut(Tuple6871229[] memory _diamondCut, address _init, bytes memory _calldata) external {}
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function implementation() external view returns (address) {}
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@@ -129,8 +139,6 @@ abstract contract ITransmuter {
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function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory _facetFunctionSelectors) {}
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function facets() external view returns (Tuple1236461[] memory facets_) {}
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function accessControlManager() external view returns (address) {}
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function agToken() external view returns (address) {}
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@@ -141,7 +149,7 @@ abstract contract ITransmuter {
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function getCollateralDecimals(address collateral) external view returns (uint8) {}
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function getCollateralInfo(address collateral) external view returns (Tuple3550792 memory) {}
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function getCollateralInfo(address collateral) external view returns (Collateral memory) {}
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function getCollateralList() external view returns (address[] memory) {}
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@@ -203,8 +211,6 @@ abstract contract ITransmuter {
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function setAccessControlManager(address _newAccessControlManager) external {}
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function setCollateralManager(address collateral, Tuple5479340 memory managerData) external {}
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function setOracle(address collateral, bytes memory oracleConfig) external {}
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function setWhitelistStatus(address collateral, uint8 whitelistStatus, bytes memory whitelistData) external {}
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187
evm/src/angle/AngleUtils.sol
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187
evm/src/angle/AngleUtils.sol
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@@ -0,0 +1,187 @@
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.13;
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/**
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* @dev Collection of wrapped interfaces, items and libraries for Angle
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* we use them here to maintain integrity and readability of contracts
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* as there are many different imports and items
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*/
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import {IERC20, ISwapAdapter} from "src/interfaces/ISwapAdapter.sol";
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interface IAgToken is IERC20 {
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/*//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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MINTER ROLE ONLY FUNCTIONS
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////*/
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/// @notice Lets a whitelisted contract mint agTokens
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/// @param account Address to mint to
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/// @param amount Amount to mint
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function mint(address account, uint256 amount) external;
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/// @notice Burns `amount` tokens from a `burner` address after being asked to by `sender`
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/// @param amount Amount of tokens to burn
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/// @param burner Address to burn from
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/// @param sender Address which requested the burn from `burner`
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/// @dev This method is to be called by a contract with the minter right after being requested
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/// to do so by a `sender` address willing to burn tokens from another `burner` address
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/// @dev The method checks the allowance between the `sender` and the `burner`
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function burnFrom(uint256 amount, address burner, address sender) external;
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/// @notice Burns `amount` tokens from a `burner` address
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/// @param amount Amount of tokens to burn
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/// @param burner Address to burn from
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/// @dev This method is to be called by a contract with a minter right on the AgToken after being
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/// requested to do so by an address willing to burn tokens from its address
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function burnSelf(uint256 amount, address burner) external;
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/*//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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TREASURY ONLY FUNCTIONS
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////*/
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/// @notice Adds a minter in the contract
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/// @param minter Minter address to add
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/// @dev Zero address checks are performed directly in the `Treasury` contract
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function addMinter(address minter) external;
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/// @notice Removes a minter from the contract
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/// @param minter Minter address to remove
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/// @dev This function can also be called by a minter wishing to revoke itself
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function removeMinter(address minter) external;
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/// @notice Sets a new treasury contract
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/// @param _treasury New treasury address
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function setTreasury(address _treasury) external;
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/*//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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EXTERNAL FUNCTIONS
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////*/
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/// @notice Checks whether an address has the right to mint agTokens
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/// @param minter Address for which the minting right should be checked
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/// @return Whether the address has the right to mint agTokens or not
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function isMinter(address minter) external view returns (bool);
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/// @notice Amount of decimals of the stablecoin
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function decimals() external view returns (uint8);
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}
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enum ManagerType {
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EXTERNAL
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}
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enum WhitelistType {
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BACKED
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}
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struct ManagerStorage {
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IERC20[] subCollaterals; // Subtokens handled by the manager or strategies
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bytes config; // Additional configuration data
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}
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struct Collateral {
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uint8 isManaged; // If the collateral is managed through external strategies
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uint8 isMintLive; // If minting from this asset is unpaused
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uint8 isBurnLive; // If burning to this asset is unpaused
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uint8 decimals; // IERC20Metadata(collateral).decimals()
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uint8 onlyWhitelisted; // If only whitelisted addresses can burn or redeem for this token
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uint216 normalizedStables; // Normalized amount of stablecoins issued from this collateral
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uint64[] xFeeMint; // Increasing exposures in [0,BASE_9[
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int64[] yFeeMint; // Mint fees at the exposures specified in `xFeeMint`
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uint64[] xFeeBurn; // Decreasing exposures in ]0,BASE_9]
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int64[] yFeeBurn; // Burn fees at the exposures specified in `xFeeBurn`
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bytes oracleConfig; // Data about the oracle used for the collateral
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bytes whitelistData; // For whitelisted collateral, data used to verify whitelists
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ManagerStorage managerData; // For managed collateral, data used to handle the strategies
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}
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struct TransmuterStorage {
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IAgToken agToken; // agToken handled by the system
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uint8 isRedemptionLive; // If redemption is unpaused
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uint8 statusReentrant; // If call is reentrant or not
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uint128 normalizedStables; // Normalized amount of stablecoins issued by the system
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uint128 normalizer; // To reconcile `normalizedStables` values with the actual amount
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address[] collateralList; // List of collateral assets supported by the system
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uint64[] xRedemptionCurve; // Increasing collateral ratios > 0
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int64[] yRedemptionCurve; // Value of the redemption fees at `xRedemptionCurve`
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mapping(address => Collateral) collaterals; // Maps a collateral asset to its parameters
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mapping(address => uint256) isTrusted; // If an address is trusted to update the normalizer value
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mapping(address => uint256) isSellerTrusted; // If an address is trusted to sell accruing reward tokens
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mapping(WhitelistType => mapping(address => uint256)) isWhitelistedForType;
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}
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interface IManager {
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/// @notice Returns the amount of collateral managed by the Manager
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/// @return balances Balances of all the subCollaterals handled by the manager
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/// @dev MUST NOT revert
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function totalAssets() external view returns (uint256[] memory balances, uint256 totalValue);
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/// @notice Hook to invest `amount` of `collateral`
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/// @dev MUST revert if the manager cannot accept these funds
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/// @dev MUST have received the funds beforehand
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function invest(uint256 amount) external;
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/// @notice Sends `amount` of `collateral` to the `to` address
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/// @dev Called when `agToken` are burnt and during redemptions
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// @dev MUST revert if there are not funds enough available
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/// @dev MUST be callable only by the transmuter
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function release(address asset, address to, uint256 amount) external;
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/// @notice Gives the maximum amount of collateral immediately available for a transfer
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/// @dev Useful for integrators using `quoteIn` and `quoteOut`
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function maxAvailable() external view returns (uint256);
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}
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/// @title LibManager
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/// @author Angle Labs, Inc.
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/// @dev Managed collateral assets may be handled through external smart contracts or directly through this library
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/// @dev There is no implementation at this point for a managed collateral handled through this library, and
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/// a new specific `ManagerType` would need to be added in this case
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library LibManager {
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/// @notice Checks to which address managed funds must be transferred
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function transferRecipient(bytes memory config) internal view returns (address recipient) {
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(ManagerType managerType, bytes memory data) = parseManagerConfig(config);
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recipient = address(this);
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if (managerType == ManagerType.EXTERNAL) return abi.decode(data, (address));
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}
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/// @notice Performs a transfer of `token` for a collateral that is managed to a `to` address
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/// @dev `token` may not be the actual collateral itself, as some collaterals have subcollaterals associated
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/// with it
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/// @dev Eventually pulls funds from strategies
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function release(address token, address to, uint256 amount, bytes memory config) internal {
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(ManagerType managerType, bytes memory data) = parseManagerConfig(config);
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if (managerType == ManagerType.EXTERNAL) abi.decode(data, (IManager)).release(token, to, amount);
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}
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/// @notice Gets the balances of all the tokens controlled through `managerData`
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/// @return balances An array of size `subCollaterals` with current balances of all subCollaterals
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/// including the one corresponding to the `managerData` given
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/// @return totalValue The value of all the `subCollaterals` in `collateral`
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/// @dev `subCollaterals` must always have as first token (index 0) the collateral itself
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function totalAssets(bytes memory config) internal view returns (uint256[] memory balances, uint256 totalValue) {
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(ManagerType managerType, bytes memory data) = parseManagerConfig(config);
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if (managerType == ManagerType.EXTERNAL) return abi.decode(data, (IManager)).totalAssets();
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}
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/// @notice Calls a hook if needed after new funds have been transfered to a manager
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function invest(uint256 amount, bytes memory config) internal {
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(ManagerType managerType, bytes memory data) = parseManagerConfig(config);
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if (managerType == ManagerType.EXTERNAL) abi.decode(data, (IManager)).invest(amount);
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}
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/// @notice Returns available underlying tokens, for instance if liquidity is fully used and
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/// not withdrawable the function will return 0
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function maxAvailable(bytes memory config) internal view returns (uint256 available) {
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(ManagerType managerType, bytes memory data) = parseManagerConfig(config);
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if (managerType == ManagerType.EXTERNAL) return abi.decode(data, (IManager)).maxAvailable();
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}
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/// @notice Decodes the `managerData` associated to a collateral
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function parseManagerConfig(
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bytes memory config
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) internal pure returns (ManagerType managerType, bytes memory data) {
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(managerType, data) = abi.decode(config, (ManagerType, bytes));
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}
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}
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