SafeToken.sol
View Source: contracts/SafeToken.sol
↗ Extends: ErrorReporter ↘ Derived Contracts: AlkemiEarnPublic, AlkemiEarnVerified, Liquidator

Functions

  • checkTransferIn(address asset, address from, uint256 amount)
  • doTransferIn(address asset, address from, uint256 amount)
  • getCash(address asset)
  • getBalanceOf(address asset, address from)
  • doTransferOut(address asset, address to, uint256 amount)
  • doApprove(address asset, address to, uint256 amount)

checkTransferIn

Checks whether or not there is sufficient allowance for this contract to move amount from from and whether or not from has a balance of at least amount. Does NOT do a transfer.
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function checkTransferIn(address asset, address from, uint256 amount) internal view
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returns(enum ErrorReporter.Error)
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Arguments
Name
Type
Description
asset
address
from
address
amount
uint256

doTransferIn

Similar to EIP20 transfer, except it handles a False result from transferFrom and returns an explanatory error code rather than reverting. If caller has not called checkTransferIn, this may revert due to insufficient balance or insufficient allowance. If caller has called checkTransferIn prior to this call, and it returned Error.NO_ERROR, this should not revert in normal conditions.
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function doTransferIn(address asset, address from, uint256 amount) internal nonpayable
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returns(enum ErrorReporter.Error)
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Arguments
Name
Type
Description
asset
address
from
address
amount
uint256

getCash

Checks balance of this contract in asset
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function getCash(address asset) internal view
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returns(uint256)
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Arguments
Name
Type
Description
asset
address

getBalanceOf

Checks balance of from in asset
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function getBalanceOf(address asset, address from) internal view
2
returns(uint256)
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Arguments
Name
Type
Description
asset
address
from
address

doTransferOut

Similar to EIP20 transfer, except it handles a False result from transfer and returns an explanatory error code rather than reverting. If caller has not called checked protocol's balance, this may revert due to insufficient cash held in this contract. If caller has checked protocol's balance prior to this call, and verified it is >= amount, this should not revert in normal conditions.
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function doTransferOut(address asset, address to, uint256 amount) internal nonpayable
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returns(enum ErrorReporter.Error)
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Arguments
Name
Type
Description
asset
address
to
address
amount
uint256

doApprove

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function doApprove(address asset, address to, uint256 amount) internal nonpayable
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returns(enum ErrorReporter.Error)
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Arguments
Name
Type
Description
asset
address
to
address
amount
uint256
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Contents
Functions