CCIPProvider Code Style Findings

CCI-01C: Inefficient Iterator Increment Statements

Type	Severity	Location
Gas Optimization		CCIPProvider.sol:L113, L283

Description:

The referenced iterator increment statements are inefficient as they perform an addition-assignment instead of a prefix increment operator.

Example:

Copy
113i += 1;

Recommendation:

We advise the prefix increment operator (++i) to be utilized, optimizing each increment statement's gas cost.

Alleviation (54fd570de24631ca65a7cea022aebe43225a08c7):

The referenced iterator instances were properly updated to prefix increment operators rendering this exhibit fully addressed.

CCI-02C: Inefficient Loop Implementation

Type	Severity	Location
Gas Optimization		CCIPProvider.sol:L271

Description:

The referenced for loop utilizes a uint8 iterator which is inefficient as the EVM is built to operate on 32-byte types.

Example:

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271for (uint8 i = 0; i < _supportedChains.length; i++) {

Recommendation:

We advise the iterator to be updated to a uint256 type, optimizing the loop's gas cost.

Alleviation (54fd570de24631ca65a7cea022aebe43225a08c7):

The uint256 data type is now properly utilized in the referenced loop, optimizing its gas cost.

CCI-03C: Loop Iterator Optimization

Type	Severity	Location
Gas Optimization		CCIPProvider.sol:L271

Description:

The linked for loop increments / decrements the iterator "safely" due to Solidity's built-in safe arithmetics (post-0.8.X).

Example:

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271for (uint8 i = 0; i < _supportedChains.length; i++) {

Recommendation:

We advise the increment / decrement operation to be performed in an unchecked code block as the last statement within the for loop to optimize its execution cost.

Alleviation (54fd570de24631ca65a7cea022aebe43225a08c7):

The referenced loop iterator's increment statement has been relocated at the end of the for loop's body and has been unwrapped in an unchecked code block, optimizing its gas cost.

CCI-04C: Suboptimal Struct Declaration Style

Type	Severity	Location
Code Style		CCIPProvider.sol:L314-L321

Description:

The linked declaration style of a struct is using index-based argument initialization.

Example:

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314ITeleport.DappTransmissionReceive(
315    message.sender, // This should be the teleport sender on the source chain
316    sourceChainId,
317    info.dappTransmissionSender,
318    transmissionReceiverAddress,
319    info.dAppId,
320    info.dappPayload
321)

Recommendation:

We advise the key-value declaration format to be utilized instead, greatly increasing the legibility of the codebase.

Alleviation (54fd570de24631ca65a7cea022aebe43225a08c7):

The key-value declaration style is now properly in use within the referenced struct declaration, addressing this exhibit in full.