LibAssetV2

The LibAssetV2 library provides a convenient interface for interacting with different types of assets in Solidity, whether they are native assets or ERC20 tokens.

isNative():

This function checks if the given address (self) represents a native asset (Ether). It returns true if the address is the native asset ID (0x0).

Input:

Field	Type	Description
self	address	The asset that will be checked for a native token.

Output:

Field	Type	Description
self == NATIVE_ASSETID	bool	Flag to identify if the asset is native or not.

getBalance():

This function retrieves the balance of the current contract for a given asset (self). If the asset is a native asset, it returns the Ether balance of the contract. Otherwise, it uses the ERC20 balanceOf function to fetch the token balance.

Input:

Field	Type	Description
self	address	Asset whose balance needs to be found
targetAddress	address	The address where the balance is checked from

Output:

Field	Type	Description
self.isNative() ? address(this).balance : IERC20(self).balanceOf(address(this))	uint256	Balance of the asset

transferFrom():

This function performs a safeTransferFrom operation for a given asset (self) from one address (from) to another address (to). It uses the SafeERC20 library to ensure safe token transfers.

Input:

Field	Type	Description
self	address	Asset that will be transferred
from	address	address that will send the asset
to	address	address that will receive the transferred asset
amount	uint256	amount of an asset that will be transferred

transfer():

This function performs a transfer of a given amount of an asset (self) to a recipient address (recipient). If the asset is a native asset, it uses Address.sendValue to send Ether. Otherwise, it uses the ERC20 safeTransfer function.

Input:

Field	Type	Description
self	address	Asset that will be transferred
recipient	address	address that will receive the transferred asset
amount	uint256	amount of an asset that will be transferred

approve():

This function approves a spender address (spender) to spend a specified amount of an asset (self). It uses the SafeERC20 library's forceApprove function.

Input:

Field	Type	Description
self	address	The asset that will be approved.
spender	address	Address of a contract that will use the owners asset.
amount	uint256	Asset amount that can be spent.

isSuccessful():

This function is useful in scenarios where a contract interacts with another contract and needs to determine if the interaction was successful, especially when dealing with low-level calls (call, delegatecall, staticcall) that return a success flag and data.

Input:

Field	Type	Description
target	address	Address of the target contract
success	bool	To check if the call to the contract was successful or not
data	bytes memory	The data was sent while calling the target contract.

execute():

This function is useful in scenarios where a contract needs to interact with another contract and then determine if that interaction was successful, not just at the surface level (i.e., the call didn't throw an error), but also based on the content of the response.

Input:

Field	Type	Description
self	address	The address of the contract to which the call is being made.
params	bytes memory	The parameters or data to be sent in the call.