IERC1400TokensValidator.sol

// SPDX-License-Identifier: Apache-2.0
/*
 * This code has not been reviewed.
 * Do not use or deploy this code before reviewing it personally first.
 */
pragma solidity ^0.8.0;

/**
 * @title IERC1400TokensValidator
 * @dev ERC1400TokensValidator interface
 */
interface IERC1400TokensValidator {
  
  /**
   * @dev Verify if a token transfer can be executed or not, on the validator's perspective.
   * @param token Token address.
   * @param payload Payload of the initial transaction.
   * @param partition Name of the partition (left empty for ERC20 transfer).
   * @param operator Address which triggered the balance decrease (through transfer or redemption).
   * @param from Token holder.
   * @param to Token recipient for a transfer and 0x for a redemption.
   * @param value Number of tokens the token holder balance is decreased by.
   * @param data Extra information.
   * @param operatorData Extra information, attached by the operator (if any).
   * @return 'true' if the token transfer can be validated, 'false' if not.
   */
  struct ValidateData {
    address token;
    bytes payload;
    bytes32 partition;
    address operator;
    address from;
    address to;
    uint value;
    bytes data;
    bytes operatorData;
  }

  function canValidate(ValidateData calldata data) external view returns(bool);

  function tokensToValidate(
    bytes calldata payload,
    bytes32 partition,
    address operator,
    address from,
    address to,
    uint value,
    bytes calldata data,
    bytes calldata operatorData
  ) external;

}