gdb/testsuite/gdb.ada/iwide/classes.ads

   1 --  Copyright 2012-2023 Free Software Foundation, Inc.
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   5 --  the Free Software Foundation; either version 3 of the License, or
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   8 --  This program is distributed in the hope that it will be useful,
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  10 --  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 --  GNU General Public License for more details.
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  13 --  You should have received a copy of the GNU General Public License
  14 --  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 package Classes is
  17
  18    type Point is record
  19       X : Integer;
  20       Y : Integer;
  21    end record;
  22
  23    type Shape is abstract tagged null record;
  24
  25    type Shape_Access is access all Shape'Class;
  26
  27    type Drawable is interface;
  28
  29    type Drawable_Access is access all Drawable'Class;
  30
  31    procedure Draw (D : Drawable) is abstract;
  32
  33    type Circle is new Shape and Drawable with record
  34       Center : Point;
  35       Radius : Natural;
  36    end record;
  37
  38    procedure Draw (R : Circle);
  39
  40    My_Circle   : Circle := ((1, 2), 3);
  41    My_Shape    : Shape'Class := Shape'Class (My_Circle);
  42    My_Drawable : Drawable'Class := Drawable'Class (My_Circle);
  43
  44    S_Access : Shape_Access := new Circle'(My_Circle);
  45    D_Access : Drawable_Access := new Circle'(My_Circle);
  46
  47    type R (MS : Shape_Access; MD : Drawable_Access) is record
  48       E : Integer;
  49    end record;
  50
  51    MR : R := (MS => S_Access, MD => D_Access, E => 42);
  52
  53    type Shape_Array is array (1 .. 4) of Shape_Access;
  54    type Drawable_Array is array (1 .. 4) of Drawable_Access;
  55
  56    S_Array : Shape_Array := (others => S_Access);
  57    D_Array : Drawable_Array := (others => D_Access);
  58
  59 end Classes;