✨ debt-manager: support EIP-2612 permit

.changeset/great-jokes-do.md

@@ -0,0 +1,5 @@
+---
+"@exactly/protocol": patch
+---
+
+✨ debt-manager: support `EIP-2612` permit

.gas-snapshot

@@ -10,47 +10,48 @@ AuditorTest:testEnableMarketAuditorMismatch() (gas: 24805)
 AuditorTest:testEnableMarketShouldRevertWithInvalidPriceFeed() (gas: 149281)
 AuditorTest:testEnterExitMarket() (gas: 178761)
 AuditorTest:testExitMarketOwning() (gas: 177445)
-DebtManagerTest:testApproveMaliciousMarket() (gas: 29119)
-DebtManagerTest:testApproveMarket() (gas: 61610)
-DebtManagerTest:testAvailableLiquidity() (gas: 100410)
-DebtManagerTest:testBalancerFlashloanCallFromDifferentOrigin() (gas: 65654)
-DebtManagerTest:testCallReceiveFlashLoanFromAnyAddress() (gas: 33485)
-DebtManagerTest:testDeleverage() (gas: 461852)
-DebtManagerTest:testDeleverageHalfBorrowPosition() (gas: 500975)
-DebtManagerTest:testFixedDeleverage() (gas: 451803)
-DebtManagerTest:testFixedRoll() (gas: 525733)
-DebtManagerTest:testFixedRollSameMaturityWithThreeLoops() (gas: 400447)
-DebtManagerTest:testFixedRollWithAccurateBorrowSlippage() (gas: 796123)
-DebtManagerTest:testFixedRollWithAccurateBorrowSlippageWithThreeLoops() (gas: 1130235)
-DebtManagerTest:testFixedRollWithAccurateRepaySlippage() (gas: 796083)
-DebtManagerTest:testFixedRollWithAccurateRepaySlippageWithThreeLoops() (gas: 1124995)
-DebtManagerTest:testFixedToFloatingRoll() (gas: 480252)
-DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidity() (gas: 542869)
-DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidityWithSlippage() (gas: 833198)
-DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidityWithSlippageWithThreeLoops() (gas: 1004798)
-DebtManagerTest:testFixedToFloatingRollWithAccurateSlippage() (gas: 680795)
-DebtManagerTest:testFlashloanFeeGreaterThanZero() (gas: 429735)
-DebtManagerTest:testFloatingToFixedRoll() (gas: 516165)
-DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidity() (gas: 601795)
-DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidityWithSlippage() (gas: 999755)
-DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidityWithSlippageWithThreePools() (gas: 1208171)
-DebtManagerTest:testFloatingToFixedRollWithAccurateSlippage() (gas: 806652)
-DebtManagerTest:testFloatingToFixedRollWithAccurateSlippageWithPreviousPosition() (gas: 757550)
-DebtManagerTest:testLateFixedDeleverage() (gas: 484949)
-DebtManagerTest:testLateFixedRoll() (gas: 536412)
-DebtManagerTest:testLateFixedRollWithThreeLoops() (gas: 720006)
-DebtManagerTest:testLateFixedToFloatingRoll() (gas: 487641)
-DebtManagerTest:testLateFixedToFloatingRollWithThreeLoops() (gas: 649144)
-DebtManagerTest:testLeverage() (gas: 375538)
-DebtManagerTest:testLeverageShouldFailWhenHealthFactorNearOne() (gas: 751995)
-DebtManagerTest:testLeverageWithAlreadyDepositedAmount() (gas: 403934)
-DebtManagerTest:testLeverageWithInvalidBalancerVault() (gas: 2751564)
-DebtManagerTest:testMockBalancerVault() (gas: 4104898)
-DebtManagerTest:testPartialFixedDeleverage() (gas: 525811)
-DebtManagerTest:testPartialFixedRoll() (gas: 589054)
-DebtManagerTest:testPartialFixedToFloatingRoll() (gas: 553117)
-DebtManagerTest:testPartialLateFixedRoll() (gas: 581433)
-DebtManagerTest:testPartialLateFixedToFloatingRoll() (gas: 551859)
+DebtManagerTest:testApproveMaliciousMarket() (gas: 29117)
+DebtManagerTest:testApproveMarket() (gas: 61608)
+DebtManagerTest:testAvailableLiquidity() (gas: 100500)
+DebtManagerTest:testBalancerFlashloanCallFromDifferentOrigin() (gas: 65633)
+DebtManagerTest:testCallReceiveFlashLoanFromAnyAddress() (gas: 33487)
+DebtManagerTest:testDeleverage() (gas: 461764)
+DebtManagerTest:testDeleverageHalfBorrowPosition() (gas: 500887)
+DebtManagerTest:testFixedDeleverage() (gas: 451787)
+DebtManagerTest:testFixedRoll() (gas: 525758)
+DebtManagerTest:testFixedRollSameMaturityWithThreeLoops() (gas: 400516)
+DebtManagerTest:testFixedRollWithAccurateBorrowSlippage() (gas: 796127)
+DebtManagerTest:testFixedRollWithAccurateBorrowSlippageWithThreeLoops() (gas: 1130239)
+DebtManagerTest:testFixedRollWithAccurateRepaySlippage() (gas: 796087)
+DebtManagerTest:testFixedRollWithAccurateRepaySlippageWithThreeLoops() (gas: 1124999)
+DebtManagerTest:testFixedToFloatingRoll() (gas: 480272)
+DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidity() (gas: 542894)
+DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidityWithSlippage() (gas: 833202)
+DebtManagerTest:testFixedToFloatingRollHigherThanAvailableLiquidityWithSlippageWithThreeLoops() (gas: 1004802)
+DebtManagerTest:testFixedToFloatingRollWithAccurateSlippage() (gas: 680799)
+DebtManagerTest:testFlashloanFeeGreaterThanZero() (gas: 429690)
+DebtManagerTest:testFloatingToFixedRoll() (gas: 516123)
+DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidity() (gas: 601753)
+DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidityWithSlippage() (gas: 999625)
+DebtManagerTest:testFloatingToFixedRollHigherThanAvailableLiquidityWithSlippageWithThreePools() (gas: 1208041)
+DebtManagerTest:testFloatingToFixedRollWithAccurateSlippage() (gas: 806522)
+DebtManagerTest:testFloatingToFixedRollWithAccurateSlippageWithPreviousPosition() (gas: 757420)
+DebtManagerTest:testLateFixedDeleverage() (gas: 484933)
+DebtManagerTest:testLateFixedRoll() (gas: 536460)
+DebtManagerTest:testLateFixedRollWithThreeLoops() (gas: 720031)
+DebtManagerTest:testLateFixedToFloatingRoll() (gas: 487661)
+DebtManagerTest:testLateFixedToFloatingRollWithThreeLoops() (gas: 649169)
+DebtManagerTest:testLeverage() (gas: 375539)
+DebtManagerTest:testLeverageShouldFailWhenHealthFactorNearOne() (gas: 751905)
+DebtManagerTest:testLeverageWithAlreadyDepositedAmount() (gas: 403912)
+DebtManagerTest:testLeverageWithInvalidBalancerVault() (gas: 2936191)
+DebtManagerTest:testMockBalancerVault() (gas: 4289437)
+DebtManagerTest:testPartialFixedDeleverage() (gas: 525791)
+DebtManagerTest:testPartialFixedRoll() (gas: 589035)
+DebtManagerTest:testPartialFixedToFloatingRoll() (gas: 553142)
+DebtManagerTest:testPartialLateFixedRoll() (gas: 581414)
+DebtManagerTest:testPartialLateFixedToFloatingRoll() (gas: 551840)
+DebtManagerTest:testPermitAndRollFloatingToFixed() (gas: 597947)
 InterestRateModelTest:testFixedBorrowRate() (gas: 8089)
 InterestRateModelTest:testFloatingBorrowRate() (gas: 6236)
 InterestRateModelTest:testMinFixedRate() (gas: 7610)

contracts/periphery/DebtManager.sol

@@ -101,7 +101,7 @@ contract DebtManager is Initializable {
     uint256 borrowMaturity,
     uint256 maxBorrowAssets,
     uint256 percentage
-  ) external {
+  ) public {
     uint256[] memory amounts = new uint256[](1);
     ERC20[] memory tokens = new ERC20[](1);
     bytes[] memory calls;
@@ -152,7 +152,7 @@ contract DebtManager is Initializable {
     uint256 repayMaturity,
     uint256 maxRepayAssets,
     uint256 percentage
-  ) external {
+  ) public {
     uint256[] memory amounts = new uint256[](1);
     ERC20[] memory tokens = new ERC20[](1);
     bytes[] memory calls;
@@ -196,14 +196,14 @@ contract DebtManager is Initializable {
   /// @param maxRepayAssets Max amount of debt that the account is willing to accept to be repaid.
   /// @param maxBorrowAssets Max amount of debt that the sender is willing to accept to be borrowed.
   /// @param percentage The percentage of the position that will be rolled, represented with 18 decimals.
-  function fixedRoll(
+  function rollFixed(
     Market market,
     uint256 repayMaturity,
     uint256 borrowMaturity,
     uint256 maxRepayAssets,
     uint256 maxBorrowAssets,
     uint256 percentage
-  ) external {
+  ) public {
     uint256[] memory amounts = new uint256[](1);
     ERC20[] memory tokens = new ERC20[](1);
     bytes[] memory calls;
@@ -316,6 +316,73 @@ contract DebtManager is Initializable {
     }
   }
 
+  /// @notice Calls `token.permit` on behalf of `permit.account`.
+  /// @param token The `ERC20` to call `permit`.
+  /// @param p Arguments for the permit call.
+  modifier permit(
+    ERC20 token,
+    uint256 assets,
+    Permit calldata p
+  ) {
+    token.permit(p.account, address(this), assets, p.deadline, p.v, p.r, p.s);
+    _;
+  }
+
+  /// @notice Rolls a percentage of the floating position of `msg.sender` to a fixed position
+  /// after calling `market.permit`.
+  /// @param market The Market to roll the position in.
+  /// @param borrowMaturity The maturity of the fixed pool that the position is being rolled to.
+  /// @param maxBorrowAssets Max amount of debt that the sender is willing to accept to be borrowed.
+  /// @param percentage The percentage of the position that will be rolled, represented with 18 decimals.
+  /// @param p Arguments for the permit call to `market` on behalf of `permit.account`.
+  function rollFloatingToFixed(
+    Market market,
+    uint256 borrowMaturity,
+    uint256 maxBorrowAssets,
+    uint256 percentage,
+    Permit calldata p
+  ) external permit(market, maxBorrowAssets, p) {
+    rollFloatingToFixed(market, borrowMaturity, maxBorrowAssets, percentage);
+  }
+
+  /// @notice Rolls a percentage of the fixed position of `msg.sender` to a floating position
+  /// after calling `market.permit`.
+  /// @param market The Market to roll the position in.
+  /// @param repayMaturity The maturity of the fixed pool that the position is being rolled from.
+  /// @param maxRepayAssets Max amount of debt that the account is willing to accept to be repaid.
+  /// @param percentage The percentage of the position that will be rolled, represented with 18 decimals.
+  /// @param p Arguments for the permit call to `market` on behalf of `permit.account`.
+  function rollFixedToFloating(
+    Market market,
+    uint256 repayMaturity,
+    uint256 maxRepayAssets,
+    uint256 percentage,
+    Permit calldata p
+  ) external permit(market, maxRepayAssets, p) {
+    rollFixedToFloating(market, repayMaturity, maxRepayAssets, percentage);
+  }
+
+  /// @notice Rolls a percentage of the fixed position of `msg.sender` to another fixed pool
+  /// after calling `market.permit`.
+  /// @param market The Market to roll the position in.
+  /// @param repayMaturity The maturity of the fixed pool that the position is being rolled from.
+  /// @param borrowMaturity The maturity of the fixed pool that the position is being rolled to.
+  /// @param maxRepayAssets Max amount of debt that the account is willing to accept to be repaid.
+  /// @param maxBorrowAssets Max amount of debt that the sender is willing to accept to be borrowed.
+  /// @param percentage The percentage of the position that will be rolled, represented with 18 decimals.
+  /// @param p Arguments for the permit call to `market` on behalf of `permit.account`.
+  function rollFixed(
+    Market market,
+    uint256 repayMaturity,
+    uint256 borrowMaturity,
+    uint256 maxRepayAssets,
+    uint256 maxBorrowAssets,
+    uint256 percentage,
+    Permit calldata p
+  ) external permit(market, maxBorrowAssets, p) {
+    rollFixed(market, repayMaturity, borrowMaturity, maxRepayAssets, maxBorrowAssets, percentage);
+  }
+
   /// @notice Returns Balancer Vault's available liquidity of each enabled underlying asset.
   function availableLiquidity() external view returns (AvailableAsset[] memory availableAssets) {
     uint256 marketsCount = auditor.allMarkets().length;
@@ -345,6 +412,14 @@ contract DebtManager is Initializable {
 
 error InvalidOperation();
 
+struct Permit {
+  address account;
+  uint256 deadline;
+  uint8 v;
+  bytes32 r;
+  bytes32 s;
+}
+
 struct RollVars {
   uint256 positionAssets;
   uint256 repayAssets;