Create Storage

Storage

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.17;
+
+contract EmployeeStorage {
+    // Declare private state variables to store employee data
+    uint16 private shares; // Number of shares owned by the employee (private to contract)
+    uint32 private salary; // Monthly salary of the employee (private to contract)
+    uint256 public idNumber; // Unique identification number of the employee (publicly accessible)
+    string public name; // Name of the employee (publicly accessible)
+
+    // Constructor to initialize employee data when contract is deployed
+    constructor(uint16 _shares, string memory _name, uint32 _salary, uint _idNumber) {
+        shares = _shares; // Initialize shares
+        name = _name; // Initialize name
+        salary = _salary; // Initialize salary
+        idNumber = _idNumber; // Initialize idNumber
+    }
+
+    // View function to retrieve the number of shares owned by the employee
+    function viewShares() public view returns (uint16) {
+        return shares;
+    }
+
+    // View function to retrieve the monthly salary of the employee
+    function viewSalary() public view returns (uint32) {
+        return salary;
+    }
+
+    // Custom error declaration
+    error TooManyShares(uint16 _shares);
+
+    // Function to grant additional shares to the employee
+    function grantShares(uint16 _newShares) public {
+        // Check if the requested shares exceed the limit
+        if (_newShares > 5000) {
+            revert("Too many shares"); // Revert with error message
+        } else if (shares + _newShares > 5000) {
+            revert TooManyShares(shares + _newShares); // Revert with custom error message
+        }
+        shares += _newShares; // Grant the new shares
+    }
+
+    // Function used for testing packing of storage variables (not relevant to main functionality)
+    function checkForPacking(uint _slot) public view returns (uint r) {
+        assembly {
+            r := sload (_slot)
+        }
+    }
+
+    // Function to reset shares for debugging purposes (not relevant to main functionality)
+    function debugResetShares() public {
+        shares = 1000; // Reset shares to 1000
+    }
+}