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--  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 Multo 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 Test
           (Multiplier, Multiplicand : in Natural)
    is
        Relation : Goal := Empty_Goal;
        Product : constant Term := Relation.Fresh;
        Result : State;
    begin
        Math.Multiply (Relation, B (Multiplier) & B (Multiplicand) & Product);
        TIO.Put (P (Multiplier) & " * " & P (Multiplicand) & " = ");
        Result := Relation.Run;
        TIO.Put_Line (PV (Product.Resolve (Result)));
    end Test;

begin

    TIO.Put_Line ("Multiplication");
    Test (0, 1);
    Test (2, 0);
    Test (1, 3);
    Test (5, 1);
    Test (2, 7);
    Test (4, 4);
    Test (3, 3);
    Test (10, 2);
    Test (11, 4);
    Test (8, 7);
    Test (3, 5);
    Test (6, 3);
    Test (3, 6);
    Test (20, 2);
    Test (3, 7);
    Test (14, 4);
    Test (5, 8);
    Test (16, 7);
    Test (5, 3);
    Test (6, 5);
    Test (5, 6);
    Test (12, 3);
    Test (3, 9);
    Test (6, 6);
    Test (3, 12);
    Test (40, 2);
    Test (3, 11);
    Test (6, 7);
    Test (7, 6);
    Test (28, 4);
    Test (3, 13);
    Test (10, 8);
    Test (5, 16);

end Multo;