Function: _handleBridging(address _assetContract, bool _transferAsset, byte[32] _receiver, uint256 _amount, uint256 _messageToll, uint256 _mojoToTokenFactor)

This function is used to build message contents and send a message to the portal contract.

Inputs

• _assetContract

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: Address of the ERC-20 token to bridge.

• _transferAsset

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: Whether to transfer the asset to this contract or not.

• _receiver

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: Receiver puzzle hash for the wrapped tokens (receiver address).

• _amount

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: Amount of CAT tokens to be minted on Chia, in Mojos.

• _messageToll

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: Value of the message toll.

• _mojoToTokenFactor

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: A power of 10 to convert from CAT amount (Mojos) to the ERC-20 token's smallest unit.

Branches and code coverage

Intended branches

• Calculate the transfer tip.

  Test coverage

• Build message contents.

  Test coverage

• If _transferAsset is true, transfer the asset to this contract from the sender.

  Test coverage

• Transfer the tip to the portal.

  Test coverage

• Send a message to the portal.

  Test coverage

Negative behavior

• Revert if the amount is less than the transfer tip.

  Negative test