CommonLib

Title: CommonLib

Author: Merge Layers Inc.

Shared helper utilities for validation and math

Functions

checkHostToExtension

Checks a host to extension call for validity

function checkHostToExtension(
    uint256 amount,
    uint32 dstChainId,
    uint256 msgValue,
    mapping(uint32 => bool) storage allowedChains,
    IGasFeesHelper gasHelper
) internal view;

Parameters

Name	Type	Description
`amount`	`uint256`	Amount being transferred
`dstChainId`	`uint32`	Destination chain id
`msgValue`	`uint256`	Message value provided
`allowedChains`	`mapping(uint32 => bool)`	Mapping of allowed chain ids
`gasHelper`	`IGasFeesHelper`	Gas helper contract

checkLengthMatch

Ensures two lengths match

function checkLengthMatch(uint256 l1, uint256 l2) internal pure;

Parameters

Name	Type	Description
`l1`	`uint256`	First length
`l2`	`uint256`	Second length

checkLengthMatch

Ensures three lengths match

function checkLengthMatch(uint256 l1, uint256 l2, uint256 l3) internal pure;

Parameters

Name	Type	Description
`l1`	`uint256`	First length
`l2`	`uint256`	Second length
`l3`	`uint256`	Third length

computeSum

Computes sum of an array

function computeSum(uint256[] calldata values) internal pure returns (uint256 sum);

Parameters

Name	Type	Description
`values`	`uint256[]`	Array of values

Returns

Name	Type	Description
`sum`	`uint256`	Total sum

Errors

CommonLib_LengthMismatch

Thrown when array lengths mismatch

error CommonLib_LengthMismatch();

AmountNotValid

Thrown when amount is invalid

error AmountNotValid();

ChainNotValid

Thrown when chain id is not allowed

error ChainNotValid();

NotEnoughGasFee

Thrown when provided gas fee is insufficient

error NotEnoughGasFee();

Malda