Added spread and price movement properties to stocks. Refactored Stock Market implementation code

src/StockMarket/Order.ts

@@ -0,0 +1,45 @@
+/**
+ * Represents a Limit or Buy Order on the stock market. Does not represent
+ * a Market Order since those are just executed immediately
+ */
+import { Stock } from "./Stock";
+import { OrderTypes } from "./data/OrderTypes";
+import { PositionTypes } from "./data/PositionTypes";
+
+import {
+    Generic_fromJSON,
+    Generic_toJSON,
+    Reviver
+} from "../../utils/JSONReviver";
+
+export class Order {
+    /**
+     * Initializes a Order from a JSON save state
+     */
+    static fromJSON(value: any): Order {
+        return Generic_fromJSON(Order, value.data);
+    }
+
+    readonly pos: PositionTypes;
+    readonly price: number;
+    readonly shares: number;
+    readonly stock: Stock;
+    readonly type: OrderTypes;
+
+    constructor(stk: Stock = new Stock(), shares: number=0, price: number=0, typ: OrderTypes=OrderTypes.LimitBuy, pos: PositionTypes=PositionTypes.Long) {
+        this.stock = stk;
+        this.shares = shares;
+        this.price = price;
+        this.type = typ;
+        this.pos = pos;
+    }
+
+    /**
+     * Serialize the Order to a JSON save state.
+     */
+    toJSON(): any {
+        return Generic_toJSON("Order", this);
+    }
+}
+
+Reviver.constructors.Order = Order;