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49 changes: 49 additions & 0 deletions
49
contracts/src/v0.8/ccip/pools/BurnWithFromMintRebasingTokenPool.sol
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// SPDX-License-Identifier: BUSL-1.1 | ||
pragma solidity 0.8.24; | ||
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import {IBurnMintERC20} from "../../shared/token/ERC20/IBurnMintERC20.sol"; | ||
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import {Pool} from "../libraries/Pool.sol"; | ||
import {BurnWithFromMintTokenPool} from "./BurnWithFromMintTokenPool.sol"; | ||
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/// @notice This pool mints and burns a 3rd-party token. | ||
/// @dev This contract is a variant of BurnMintTokenPool that uses `burn(from, amount)`. | ||
/// @dev This contract supports minting tokens that do not mint the exact amount they are asked to mint. This can be | ||
/// used for rebasing tokens. NOTE: for true rebasing support, the lockOrBurn method must also be updated to support | ||
/// relaying the correct amount. | ||
contract BurnWithFromMintRebasingTokenPool is BurnWithFromMintTokenPool { | ||
error NegativeMintAmount(uint256 amountBurned); | ||
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string public constant override typeAndVersion = "BurnWithFromMintRebasingTokenPool 1.5.0"; | ||
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constructor( | ||
IBurnMintERC20 token, | ||
address[] memory allowlist, | ||
address rmnProxy, | ||
address router | ||
) BurnWithFromMintTokenPool(token, allowlist, rmnProxy, router) {} | ||
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/// @notice Mint tokens from the pool to the recipient | ||
/// @dev The _validateReleaseOrMint check is an essential security check | ||
function releaseOrMint( | ||
Pool.ReleaseOrMintInV1 calldata releaseOrMintIn | ||
) external virtual override returns (Pool.ReleaseOrMintOutV1 memory) { | ||
_validateReleaseOrMint(releaseOrMintIn); | ||
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uint256 balancePre = IBurnMintERC20(address(i_token)).balanceOf(releaseOrMintIn.receiver); | ||
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// Mint to the receiver | ||
IBurnMintERC20(address(i_token)).mint(releaseOrMintIn.receiver, releaseOrMintIn.amount); | ||
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uint256 balancePost = IBurnMintERC20(address(i_token)).balanceOf(releaseOrMintIn.receiver); | ||
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// Mint should not reduce the number of tokens in the receiver, if it does it will revert the call. | ||
if (balancePost < balancePre) { | ||
revert NegativeMintAmount(balancePre - balancePost); | ||
} | ||
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emit Minted(msg.sender, releaseOrMintIn.receiver, balancePost - balancePre); | ||
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return Pool.ReleaseOrMintOutV1({destinationAmount: balancePost - balancePre}); | ||
} | ||
} |
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27 changes: 27 additions & 0 deletions
27
contracts/src/v0.8/ccip/test/helpers/ERC20RebasingHelper.sol
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// SPDX-License-Identifier: BUSL-1.1 | ||
pragma solidity 0.8.24; | ||
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import {ERC20} from "../../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/ERC20.sol"; | ||
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contract ERC20RebasingHelper is ERC20 { | ||
uint16 public s_multiplierPercentage = 100; | ||
bool public s_mintShouldBurn = false; | ||
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constructor() ERC20("Rebasing", "REB") {} | ||
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function mint(address to, uint256 amount) external { | ||
if (!s_mintShouldBurn) { | ||
_mint(to, amount * s_multiplierPercentage / 100); | ||
return; | ||
} | ||
_burn(to, amount * s_multiplierPercentage / 100); | ||
} | ||
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function setMultiplierPercentage(uint16 multiplierPercentage) external { | ||
s_multiplierPercentage = multiplierPercentage; | ||
} | ||
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function setMintShouldBurn(bool mintShouldBurn) external { | ||
s_mintShouldBurn = mintShouldBurn; | ||
} | ||
} |
87 changes: 87 additions & 0 deletions
87
contracts/src/v0.8/ccip/test/pools/BurnWithFromMintRebasingTokenPool.t.sol
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// SPDX-License-Identifier: BUSL-1.1 | ||
pragma solidity 0.8.24; | ||
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import {IBurnMintERC20} from "../../../shared/token/ERC20/IBurnMintERC20.sol"; | ||
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import {Pool} from "../../libraries/Pool.sol"; | ||
import {BurnWithFromMintRebasingTokenPool} from "../../pools/BurnWithFromMintRebasingTokenPool.sol"; | ||
import {BurnMintSetup} from "./BurnMintSetup.t.sol"; | ||
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import {IERC20} from "../../../vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol"; | ||
import {ERC20RebasingHelper} from "../helpers/ERC20RebasingHelper.sol"; | ||
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contract BurnWithFromMintRebasingTokenPoolSetup is BurnMintSetup { | ||
BurnWithFromMintRebasingTokenPool internal s_pool; | ||
ERC20RebasingHelper internal s_rebasingToken; | ||
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function setUp() public virtual override { | ||
BurnMintSetup.setUp(); | ||
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s_rebasingToken = new ERC20RebasingHelper(); | ||
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s_pool = new BurnWithFromMintRebasingTokenPool( | ||
IBurnMintERC20(address(s_rebasingToken)), new address[](0), address(s_mockRMN), address(s_sourceRouter) | ||
); | ||
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_applyChainUpdates(address(s_pool)); | ||
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deal(address(s_rebasingToken), OWNER, 1e18); | ||
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vm.startPrank(s_burnMintOffRamp); | ||
} | ||
} | ||
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contract BurnWithFromMintTokenPool_releaseOrMint is BurnWithFromMintRebasingTokenPoolSetup { | ||
function test_Setup_Success() public view { | ||
assertEq(address(s_rebasingToken), address(s_pool.getToken())); | ||
assertEq(address(s_mockRMN), s_pool.getRmnProxy()); | ||
assertEq(false, s_pool.getAllowListEnabled()); | ||
assertEq(type(uint256).max, s_rebasingToken.allowance(address(s_pool), address(s_pool))); | ||
assertEq("BurnWithFromMintRebasingTokenPool 1.5.0", s_pool.typeAndVersion()); | ||
} | ||
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function test_releaseOrMint_Success() public { | ||
uint256 amount = 1000; | ||
uint256 balancePre = s_rebasingToken.balanceOf(address(OWNER)); | ||
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Pool.ReleaseOrMintOutV1 memory releaseOrMintOut = s_pool.releaseOrMint(_getReleaseOrMintIn(amount)); | ||
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assertEq(amount, releaseOrMintOut.destinationAmount); | ||
assertEq(balancePre + amount, s_rebasingToken.balanceOf(address(OWNER))); | ||
} | ||
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function testFuzz_releaseOrMint_rebasing_success(uint16 multiplierPercentage) public { | ||
uint256 amount = 1000; | ||
uint256 expectedAmount = amount * multiplierPercentage / 100; | ||
s_rebasingToken.setMultiplierPercentage(multiplierPercentage); | ||
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uint256 balancePre = s_rebasingToken.balanceOf(address(OWNER)); | ||
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Pool.ReleaseOrMintOutV1 memory releaseOrMintOut = s_pool.releaseOrMint(_getReleaseOrMintIn(amount)); | ||
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assertEq(expectedAmount, releaseOrMintOut.destinationAmount); | ||
assertEq(balancePre + expectedAmount, s_rebasingToken.balanceOf(address(OWNER))); | ||
} | ||
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function test_releaseOrMint_NegativeMintAmount_reverts() public { | ||
uint256 amount = 1000; | ||
s_rebasingToken.setMintShouldBurn(true); | ||
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vm.expectRevert(abi.encodeWithSelector(BurnWithFromMintRebasingTokenPool.NegativeMintAmount.selector, amount)); | ||
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s_pool.releaseOrMint(_getReleaseOrMintIn(amount)); | ||
} | ||
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function _getReleaseOrMintIn(uint256 amount) internal view returns (Pool.ReleaseOrMintInV1 memory) { | ||
return Pool.ReleaseOrMintInV1({ | ||
originalSender: bytes(""), | ||
receiver: OWNER, | ||
amount: amount, | ||
localToken: address(s_rebasingToken), | ||
remoteChainSelector: DEST_CHAIN_SELECTOR, | ||
sourcePoolAddress: abi.encode(s_remoteBurnMintPool), | ||
sourcePoolData: "", | ||
offchainTokenData: "" | ||
}); | ||
} | ||
} |
2,818 changes: 2,818 additions & 0 deletions
2,818
...erated/burn_with_from_mint_rebasing_token_pool/burn_with_from_mint_rebasing_token_pool.go
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4 changes: 2 additions & 2 deletions
4
...hwrappers/ccip/generated/burn_with_from_mint_token_pool/burn_with_from_mint_token_pool.go
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