ERC20SwapValidator

Overview

ERC20SwapValidator ensures that only authorized routers and tokens are used for ERC20 token swaps. It provides validation methods, mappings to track supported routers/tokens, and emits relevant events to keep track of changes.

Key Features

• Router and Token Support: Controls which routers and tokens are authorized for swap operations.

• Swap Validation: Enforces rules for swap operations, ensuring compliance with authorized routers and tokens.

• Error Reporting: Raises specific errors when a swap operation fails validation.

Error Definitions

• InvalidLength: Raised when the data length for a swap operation is incorrect.

• InvalidSelector: The function selector provided is not recognized.

• UnsupportedToken: The token used is not on the supported list.

• UnsupportedRouter: The router used is not on the supported list.

Core Methods

1. View Functions

   • isSupportedRouter(address): Checks if a router is supported for swaps.

   • isSupportedToken(address): Checks if a token is supported for swaps.

2. Configuration Functions

   • setSupportedRouter(address, bool): Sets a router's supported status.

   • setSupportedToken(address, bool): Sets a token's supported status.

3. Validation Function

   • validate(address, address, bytes): Validates that the swap operation complies with the rules:

     • Checks function signatures.

     • Verifies swap parameters.

     • Ensures routers and tokens are authorized.

Events

1. Router Updates:

   • ERC20SwapValidatorSetSupportedRouter(address, bool, uint256): Emitted when a router's support status is updated.

     • router: Address of the router.

     • flag: Boolean indicating support status.

     • timestamp: Timestamp of the action.

2. Token Updates:

   • ERC20SwapValidatorSetSupportedToken(address, bool, uint256): Emitted when a token's support status is updated.

     • token: Address of the token.

     • flag: Boolean indicating support status.

     • timestamp: Timestamp of the action.