PLEASE HELP IN SCALA LANGUAGE:

How do I create a program in Scala with arithmetic expressions with classes, inheritance, and dynamic dispatch? The following variables and code must be used.

//example definitions of a class Class("Base") Class("Derived", Extends(Class("Base"))) Extends(Class("Derived"), Class("Base")) //example declaration of class variables Class("Derived", List(ClassVar("v1", VarType("int")), ClassVar("v2", VarType("string"))) //example definition of class methods Method(Class("Base"), MethodName("m1"), List(Parameter("p1", ParamType("int")), Parameter("p2", ParamType("string"))), List(Assign(Variable("somevar"), Add(Variable("var"), Macro("someName"))), Let(Assign(Variable("var2"), Add(Variable("var"), Macro("someName")))) In Add(Variable("var2"), Value(1)))) //example of the instantiation of a class val instance = CreateNew(Class("Derived")) //example of the invocation of a method val result = instance.InvokeMethod("m1", List(("p1", 1), ("p2", "howdy!")) //examples of defining nested classes Class("Base", Class("Nested")) Class("Derived", Class("Inner1st", Class("Inner2nd")))