+ Adding Basic Arithmetic Operation

src/core/config/Categories.json

@@ -160,6 +160,7 @@
             "AND",
             "ADD",
             "SUB",
+            "Basic Arithmetic",
             "Sum",
             "Subtract",
             "Multiply",

src/core/operations/BasicArithmetic.mjs

@@ -0,0 +1,46 @@
+/**
+ * @author scottdermott [scottdermott@outlook.com]
+ * @copyright Crown Copyright 2021
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+
+/**
+ * Basic Arithmetic operation
+ */
+class BasicArithmetic extends Operation {
+
+    /**
+     * BasicArithmetic constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "BasicArithmetic";
+        this.module = "Default";
+        this.description = "Evalutes Basic Arithmetic. <br><br>e.g. <code>1+2-1</code> becomes <code>2</code>";
+        this.infoURL = "";
+        this.inputType = "string";
+        this.outputType = "number";
+        this.args = [];
+    }
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {number}
+     */
+    run(input, args) {
+        if (parseInt(input, 10).toString().length === input.length) {
+            return parseInt(input, 10);
+        } else {
+            return (input.replace(/\s/g, "").match(/[+-]?([0-9.]+)/g) || [])
+                .reduce(function (sum, value) {
+                    return parseFloat(sum) + parseFloat(value);
+                });
+        }
+    }
+
+}
+
+export default BasicArithmetic;