--  Programmed by Jedidiah Barber
--  Licensed under the Sunset License v1.0

--  See license.txt for further details


with

    Ada.Text_IO,
    Kompsos.Math,
    Kompsos.Pretty_Print;


procedure Expo is

    package TIO renames Ada.Text_IO;


    package InKomp is new Kompsos (Integer);
    use InKomp;

    package Math is new InKomp.Math (0, 1);

    package Printer is new InKomp.Pretty_Print (Integer'Image);


    function B
           (Item : in Natural)
        return Term
    renames Math.Build;

    function P
           (Item : in Integer)
        return String
    renames Printer.Image;

    function PV
           (Item : in Term)
        return String is
    begin
        return P (Math.Value (Item));
    exception
    when others =>
        return Printer.Image (Item);
    end PV;


    procedure Exp_Test
           (Base, Exponent : in Natural)
    is
        Relation : Goal := Empty_Goal;
        Power : constant Term := Relation.Fresh;
        Result : State;
    begin
        Math.Exponential (Relation, B (Base) & B (Exponent) & Power);
        TIO.Put (P (Base) & "^" & P (Exponent) & " = ");
        Result := Relation.Run;
        TIO.Put_Line (PV (Power.Resolve (Result)));
    end Exp_Test;

    procedure Repeated_Mult_Test
           (Base, Exponent : in Natural)
    is
        Relation : Goal := Empty_Goal;
        Power : constant Term := Relation.Fresh;
        Result : State;
    begin
        Math.Repeated_Multiply (Relation, B (Base) & B (Exponent) & Power);
        TIO.Put (P (Base) & "^" & P (Exponent) & " = ");
        Result := Relation.Run;
        TIO.Put_Line (PV (Power.Resolve (Result)));
    end Repeated_Mult_Test;

begin

    TIO.Put_Line ("Exponential");
    Exp_Test (3, 4);

    TIO.New_Line;

    TIO.Put_Line ("Repeated Multiply");
    Repeated_Mult_Test (0, 2);
    Repeated_Mult_Test (1, 10);
    Repeated_Mult_Test (3, 4);
    Repeated_Mult_Test (4, 3);
    Repeated_Mult_Test (5, 5);

    TIO.New_Line;

    TIO.Put_Line ("Expected Failure");
    Repeated_Mult_Test (0, 0);

end Expo;