forked from yearn/tokenized-strategy-foundry-mix
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
6524e9d
commit 16cf93c
Showing
39 changed files
with
4,913 additions
and
3,666 deletions.
There are no files selected for viewing
Large diffs are not rendered by default.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,66 +1,77 @@ | ||
| // SPDX-License-Identifier: AGPL-3.0 | ||
| pragma solidity ^0.8.18; | ||
|
|
||
| import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; | ||
| import {ITermRepoToken} from "./interfaces/term/ITermRepoToken.sol"; | ||
|
|
||
| /*////////////////////////////////////////////////////////////// | ||
| LIBRARY: RepoTokenUtils | ||
| //////////////////////////////////////////////////////////////*/ | ||
|
|
||
| library RepoTokenUtils { | ||
| uint256 internal constant THREESIXTY_DAYCOUNT_SECONDS = 360 days; | ||
| uint256 internal constant RATE_PRECISION = 1e18; | ||
|
|
||
| /*////////////////////////////////////////////////////////////// | ||
| VIEW FUNCTIONS | ||
| //////////////////////////////////////////////////////////////*/ | ||
|
|
||
| /** | ||
| * @notice Calculate the present value of a repoToken | ||
| * @param repoTokenAmountInBaseAssetPrecision The amount of repoToken in base asset precision | ||
| * @param purchaseTokenPrecision The precision of the purchase token | ||
| * @param redemptionTimestamp The redemption timestamp of the repoToken | ||
| * @param discountRate The auction rate | ||
| * @return presentValue The present value of the repoToken | ||
| */ | ||
| function calculatePresentValue( | ||
| uint256 repoTokenAmountInBaseAssetPrecision, | ||
| uint256 purchaseTokenPrecision, | ||
| uint256 redemptionTimestamp, | ||
| uint256 discountRate | ||
| ) internal view returns (uint256 presentValue) { | ||
| uint256 timeLeftToMaturityDayFraction = block.timestamp > redemptionTimestamp ? 0 : | ||
| ((redemptionTimestamp - block.timestamp) * purchaseTokenPrecision) / THREESIXTY_DAYCOUNT_SECONDS; | ||
|
|
||
| // repoTokenAmountInBaseAssetPrecision / (1 + r * days / 360) | ||
| presentValue = | ||
| (repoTokenAmountInBaseAssetPrecision * purchaseTokenPrecision) / | ||
| (purchaseTokenPrecision + (discountRate * timeLeftToMaturityDayFraction / RATE_PRECISION)); | ||
|
|
||
| return presentValue > repoTokenAmountInBaseAssetPrecision ? repoTokenAmountInBaseAssetPrecision : presentValue; | ||
| } | ||
|
|
||
| /** | ||
| * @notice Get the normalized amount of a repoToken in base asset precision | ||
| * @param repoToken The address of the repoToken | ||
| * @param repoTokenAmount The amount of the repoToken | ||
| * @param purchaseTokenPrecision The precision of the purchase token | ||
| * @param repoRedemptionHaircut The haircut to be applied to the repoToken for bad debt | ||
| * @return repoTokenAmountInBaseAssetPrecision The normalized amount of the repoToken in base asset precision | ||
| */ | ||
| function getNormalizedRepoTokenAmount( | ||
| address repoToken, | ||
| uint256 repoTokenAmount, | ||
| uint256 purchaseTokenPrecision, | ||
| uint256 repoRedemptionHaircut | ||
| ) internal view returns (uint256 repoTokenAmountInBaseAssetPrecision) { | ||
| uint256 repoTokenPrecision = 10**ERC20(repoToken).decimals(); | ||
| uint256 redemptionValue = ITermRepoToken(repoToken).redemptionValue(); | ||
| repoTokenAmountInBaseAssetPrecision = | ||
| repoRedemptionHaircut != 0 ? | ||
| (redemptionValue * repoRedemptionHaircut * repoTokenAmount * purchaseTokenPrecision) / | ||
| (repoTokenPrecision * RATE_PRECISION * 1e18) | ||
| : (redemptionValue * repoTokenAmount * purchaseTokenPrecision) / (repoTokenPrecision * RATE_PRECISION); | ||
| } | ||
| } | ||
| // SPDX-License-Identifier: AGPL-3.0 | ||
| pragma solidity ^0.8.18; | ||
|
|
||
| import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; | ||
| import {ITermRepoToken} from "./interfaces/term/ITermRepoToken.sol"; | ||
|
|
||
| /*////////////////////////////////////////////////////////////// | ||
| LIBRARY: RepoTokenUtils | ||
| //////////////////////////////////////////////////////////////*/ | ||
|
|
||
| library RepoTokenUtils { | ||
| uint256 internal constant THREESIXTY_DAYCOUNT_SECONDS = 360 days; | ||
| uint256 internal constant RATE_PRECISION = 1e18; | ||
|
|
||
| /*////////////////////////////////////////////////////////////// | ||
| VIEW FUNCTIONS | ||
| //////////////////////////////////////////////////////////////*/ | ||
|
|
||
| /** | ||
| * @notice Calculate the present value of a repoToken | ||
| * @param repoTokenAmountInBaseAssetPrecision The amount of repoToken in base asset precision | ||
| * @param purchaseTokenPrecision The precision of the purchase token | ||
| * @param redemptionTimestamp The redemption timestamp of the repoToken | ||
| * @param discountRate The auction rate | ||
| * @return presentValue The present value of the repoToken | ||
| */ | ||
| function calculatePresentValue( | ||
| uint256 repoTokenAmountInBaseAssetPrecision, | ||
| uint256 purchaseTokenPrecision, | ||
| uint256 redemptionTimestamp, | ||
| uint256 discountRate | ||
| ) internal view returns (uint256 presentValue) { | ||
| uint256 timeLeftToMaturityDayFraction = block.timestamp > | ||
| redemptionTimestamp | ||
| ? 0 | ||
| : ((redemptionTimestamp - block.timestamp) * | ||
| purchaseTokenPrecision) / THREESIXTY_DAYCOUNT_SECONDS; | ||
|
|
||
| // repoTokenAmountInBaseAssetPrecision / (1 + r * days / 360) | ||
| presentValue = | ||
| (repoTokenAmountInBaseAssetPrecision * purchaseTokenPrecision) / | ||
| (purchaseTokenPrecision + | ||
| ((discountRate * timeLeftToMaturityDayFraction) / | ||
| RATE_PRECISION)); | ||
|
|
||
| return | ||
| presentValue > repoTokenAmountInBaseAssetPrecision | ||
| ? repoTokenAmountInBaseAssetPrecision | ||
| : presentValue; | ||
| } | ||
|
|
||
| /** | ||
| * @notice Get the normalized amount of a repoToken in base asset precision | ||
| * @param repoToken The address of the repoToken | ||
| * @param repoTokenAmount The amount of the repoToken | ||
| * @param purchaseTokenPrecision The precision of the purchase token | ||
| * @param repoRedemptionHaircut The haircut to be applied to the repoToken for bad debt | ||
| * @return repoTokenAmountInBaseAssetPrecision The normalized amount of the repoToken in base asset precision | ||
| */ | ||
| function getNormalizedRepoTokenAmount( | ||
| address repoToken, | ||
| uint256 repoTokenAmount, | ||
| uint256 purchaseTokenPrecision, | ||
| uint256 repoRedemptionHaircut | ||
| ) internal view returns (uint256 repoTokenAmountInBaseAssetPrecision) { | ||
| uint256 repoTokenPrecision = 10 ** ERC20(repoToken).decimals(); | ||
| uint256 redemptionValue = ITermRepoToken(repoToken).redemptionValue(); | ||
| repoTokenAmountInBaseAssetPrecision = repoRedemptionHaircut != 0 | ||
| ? (redemptionValue * | ||
| repoRedemptionHaircut * | ||
| repoTokenAmount * | ||
| purchaseTokenPrecision) / | ||
| (repoTokenPrecision * RATE_PRECISION * 1e18) | ||
| : (redemptionValue * repoTokenAmount * purchaseTokenPrecision) / | ||
| (repoTokenPrecision * RATE_PRECISION); | ||
| } | ||
| } |
Oops, something went wrong.