Self-complete

src/Car.cpp

@@ -0,0 +1,90 @@
+#include "Car.h"
+#include "TaxRates.h"
+
+Car::Car(double worth,
+         double horsepower)
+        : Property(worth)
+{
+    this->horsepower = horsepower;
+}
+
+double Car::calculateTax()
+{
+    if (horsepower <
+        TAX_RATES::LOW_HORSEPOWER)
+    {
+        return worth *
+               TAX_RATES::CAR_TAX;
+    }
+
+    if (horsepower <=
+        TAX_RATES::HIGH_HORSEPOWER)
+    {
+        return worth *
+               TAX_RATES::CAR_TRUCK_TAX;
+    }
+
+    return worth *
+           TAX_RATES::CAR_LUXURY_TAX;
+}
+
+void Car::fromJson(json j)
+{
+    worth = j["worth"];
+
+    horsepower =
+            j["horsepower"];
+}
+
+json Car::toJson()
+{
+    json j;
+
+    j["worth"] = worth;
+
+    j["horsepower"] =
+            horsepower;
+
+    j["tax"] =
+            calculateTax();
+
+    return j;
+}
+
+void Car::fromXml(
+        XMLElement* element)
+{
+    element->QueryDoubleAttribute(
+            "worth",
+            &worth
+    );
+
+    element->QueryDoubleAttribute(
+            "horsepower",
+            &horsepower
+    );
+}
+
+XMLElement* Car::toXml(
+        XMLDocument& doc)
+{
+    XMLElement* element =
+            doc.NewElement("Car");
+
+    element->SetAttribute(
+            "worth",
+            worth
+    );
+
+    element->SetAttribute(
+            "horsepower",
+            horsepower
+    );
+
+    element->SetAttribute(
+            "tax",
+            calculateTax()
+    );
+
+    return element;
+}