Remove errors interface

Author: Mike-CZ

contracts/IErrors.sol

@@ -1,8 +1,6 @@
 // SPDX-License-Identifier: UNLICENSED
 pragma solidity ^0.8.9;
 
-import {IErrors} from "../IErrors.sol";
-
 /**
  * @title Initializable
  *
@@ -15,7 +13,7 @@ import {IErrors} from "../IErrors.sol";
  * a parent initializer twice, or ensure that all initializers are idempotent,
  * because this is not dealt with automatically as with constructors.
  */
-contract Initializable is IErrors {
+contract Initializable {
     /**
      * @dev Indicates that the contract has been initialized.
      */
@@ -29,14 +27,14 @@ contract Initializable is IErrors {
     /**
      * @dev The contract instance has already been initialized.
      */
-    error ContractInitialized();
+    error InvalidInitialization();
 
     /**
      * @dev Modifier to use in the initializer function of a contract.
      */
     modifier initializer() {
         if (!initializing && initialized) {
-            revert ContractInitialized();
+            revert InvalidInitialization();
         }
 
         bool isTopLevelCall = !initializing;

contracts/common/Initializable.sol

@@ -22,7 +22,7 @@ contract ReentrancyGuard is Initializable {
     /**
      * @dev Reentrant call.
      */
-    error ReentrantCall();
+    error ReentrancyGuardReentrantCall();
 
     function initialize() internal initializer {
         // The counter starts at one to prevent changing it from zero to a non-zero
@@ -42,7 +42,7 @@ contract ReentrancyGuard is Initializable {
         uint256 localCounter = _guardCounter;
         _;
         if (localCounter != _guardCounter) {
-            revert ReentrantCall();
+            revert ReentrancyGuardReentrantCall();
         }
     }
 

contracts/common/ReentrancyGuard.sol

@@ -9,6 +9,9 @@ contract NodeDriver is Initializable {
     NodeDriverAuth internal backend;
     IEvmWriter internal evmWriter;
 
+    error NotNode();
+    error NotBackend();
+
     event UpdatedBackend(address indexed backend);
 
     function setBackend(address _backend) external onlyBackend {

contracts/sfc/NodeDriver.sol

@@ -5,16 +5,22 @@ import {Initializable} from "../common/Initializable.sol";
 import {Ownable} from "../ownership/Ownable.sol";
 import {SFCI} from "./SFCI.sol";
 import {NodeDriver} from "./NodeDriver.sol";
-import {IErrors} from "../IErrors.sol";
 
 interface NodeDriverExecutable {
     function execute() external;
 }
 
-contract NodeDriverAuth is IErrors, Initializable, Ownable {
+contract NodeDriverAuth is Initializable, Ownable {
     SFCI internal sfc;
     NodeDriver internal driver;
 
+    error NotSFC();
+    error NotDriver();
+    error NotContract();
+    error SelfCodeHashMismatch();
+    error DriverCodeHashMismatch();
+    error RecipientNotSFC();
+
     // Initialize NodeDriverAuth, NodeDriver and SFC in one call to allow fewer genesis transactions
     function initialize(address payable _sfc, address _driver, address _owner) external initializer {
         Ownable.initialize(_owner);

contracts/sfc/NodeDriverAuth.sol

@@ -3,15 +3,90 @@ pragma solidity ^0.8.9;
 
 import {Decimal} from "../common/Decimal.sol";
 import {SFCState} from "./SFCState.sol";
-import {IErrors} from "../IErrors.sol";
 
-contract SFCBase is IErrors, SFCState {
+contract SFCBase is SFCState {
     uint256 internal constant OK_STATUS = 0;
     uint256 internal constant WITHDRAWN_BIT = 1;
     uint256 internal constant OFFLINE_BIT = 1 << 3;
     uint256 internal constant DOUBLESIGN_BIT = 1 << 7;
     uint256 internal constant CHEATER_MASK = DOUBLESIGN_BIT;
 
+    // auth
+    error NotDriverAuth();
+    error NotAuthorized();
+
+    // addresses
+    error ZeroAddress();
+    error SameAddress();
+    error RecipientNotSFC();
+
+    // values
+    error ZeroAmount();
+    error ZeroRewards();
+
+    // pubkeys
+    error PubkeyExists();
+    error MalformedPubkey();
+    error SamePubkey();
+    error EmptyPubkey();
+    error PubkeyAllowedOnlyOnce();
+
+    // redirections
+    error SameRedirectionAuthorizer();
+    error Redirected();
+
+    // validators
+    error ValidatorNotExists();
+    error ValidatorExists();
+    error ValidatorNotActive();
+    error ValidatorDelegationLimitExceeded();
+    error WrongValidatorStatus();
+
+    // requests
+    error RequestedCompleted();
+    error RequestExists();
+    error RequestNotExists();
+
+    // transfers
+    error TransfersNotAllowed();
+    error TransferFailed();
+
+    // updater
+    error SFCAlreadyUpdated();
+    error SFCWrongVersion();
+    error SFCGovAlreadyUpdated();
+    error SFCWrongGovVersion();
+
+    // node driver
+    error SelfCodeHashMismatch();
+    error DriverCodeHashMismatch();
+
+    // governance
+    error GovVotesRecountFailed();
+
+    // staking
+    error LockedStakeGreaterThanTotalStake();
+    error InsufficientSelfStake();
+    error NotEnoughUnlockedStake();
+    error NotEnoughLockedStake();
+    error NotEnoughTimePassed();
+    error NotEnoughEpochsPassed();
+    error StakeIsFullySlashed();
+    error IncorrectDuration();
+    error ValidatorLockupTooShort();
+    error TooManyReLocks();
+    error TooFrequentReLocks();
+    error LockupDurationDecreased();
+    error AlreadyLockedUp();
+    error NotLockedUp();
+
+    // stashing
+    error NothingToStash();
+
+    // slashing
+    error ValidatorNotSlashed();
+    error RefundRatioTooHigh();
+
     event DeactivatedValidator(uint256 indexed validatorID, uint256 deactivatedEpoch, uint256 deactivatedTime);
     event ChangedValidatorStatus(uint256 indexed validatorID, uint256 status);
 

contracts/sfc/SFCBase.sol

@@ -8,7 +8,6 @@ import {ConstantsManager} from "./ConstantsManager.sol";
 import {SFC} from "./SFC.sol";
 import {SFCI} from "./SFCI.sol";
 import {Version} from "../version/Version.sol";
-import {IErrors} from "../IErrors.sol";
 
 interface GovI {
     function upgrade(address v) external;
@@ -22,7 +21,7 @@ interface GovVersion {
     function version() external pure returns (bytes4);
 }
 
-contract Updater is IErrors {
+contract Updater {
     address public sfcFrom;
     address public sfcLib;
     address public sfcConsts;
@@ -31,6 +30,12 @@ contract Updater is IErrors {
     address public voteBook;
     address public owner;
 
+    error ZeroAddress();
+    error SFCAlreadyUpdated();
+    error SFCWrongVersion();
+    error SFCGovAlreadyUpdated();
+    error SFCWrongGovVersion();
+
     constructor(
         address _sfcFrom,
         address _sfcLib,

contracts/sfc/Updater.sol

@@ -5,7 +5,6 @@ import {Decimal} from "../common/Decimal.sol";
 import {SFC} from "../sfc/SFC.sol";
 import {SFCBase} from "../sfc/SFCBase.sol";
 import {SFCLib} from "../sfc/SFCLib.sol";
-import {IErrors} from "../IErrors.sol";
 import {NodeDriverAuth} from "../sfc/NodeDriverAuth.sol";
 import {NodeDriver} from "../sfc/NodeDriver.sol";
 import {UnitTestConstantsManager} from "./UnitTestConstantsManager.sol";
@@ -114,7 +113,7 @@ contract UnitTestNetworkInitializer {
     }
 }
 
-interface SFCUnitTestI is IErrors {
+interface SFCUnitTestI {
     function currentSealedEpoch() external view returns (uint256);
 
     function getEpochSnapshot(