setBorrowing

Overview

• cache

• updateState

• getIsolationMode

• validateBorrow

• mint debt token

• setBorrowing

• update IsolationMode debt

• updateInterestRates

• transfer underlying to user

bool ifFirstBorrowing captures the return value from either of the debt token's mint function. It is true, if the user had no debt previously, thereby making this incoming borrow action the user's very first one.

setBorrowing

The function performs bitwise operations to set or unset the borrowing status for the specified reserve.

It calculates the bit position based on the reserveIndex and creates a bit mask by left shifting 1 by twice the reserveIndex value. This mask is captured by the bit variable.

Setting Borrowing Status: If borrowing is true, the function uses a bitwise OR operation (|=) to set the corresponding bit in the self.data bitmap. This indicates that the user is borrowing the specified reserve.

Unsetting Borrowing Status: If borrowing is false, the function uses a bitwise AND operation (&=) with the bitwise negation (~bit) to unset the corresponding bit in the self.data map. This indicates that the user is not borrowing the specified reserve.

For in-depth illustration on how this function works, see: setUsingAsCollateral.

The process for both are similar, one sets the borrow flag, the other sets the collateral flag.