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176 | -- --
-- package Copyright (c) Dmitry A. Kazakov --
-- Julia.Generic_2D_Array Luebeck --
-- Implementation Winter, 2019 --
-- --
-- Last revision : 18:40 23 Oct 2021 --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public License as --
-- published by the Free Software Foundation; either version 2 of --
-- the License, or (at your option) any later version. This library --
-- is distributed in the hope that it will be useful, but WITHOUT --
-- ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. You should have --
-- received a copy of the GNU General Public License along with --
-- this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from --
-- this unit, or you link this unit with other files to produce an --
-- executable, this unit does not by itself cause the resulting --
-- executable to be covered by the GNU General Public License. This --
-- exception does not however invalidate any other reasons why the --
-- executable file might be covered by the GNU Public License. --
--____________________________________________________________________--
with System.Address_To_Access_Conversions;
package body Julia.Generic_2D_Array is
type Flat_Array is array (size_t) of aliased Element_Type;
pragma Convention (C, Flat_Array);
package Conversions is
new System.Address_To_Access_Conversions (Flat_Array);
use Conversions;
function Get_Data (Object : value_t) return Object_Pointer is
Ptr : Address;
for Ptr'Address use Address (Object);
pragma Import (Ada, Ptr);
begin
return To_Pointer (Ptr);
end Get_Data;
procedure Check_Type
( Object : value_t;
Rows : out size_t;
Columns : out size_t
) is
Len : constant value_t := Links.ArrayLen (Object);
begin
Check_Error;
if Links.Array_Rank (Object) /= 2 then
Raise_Exception
( Constraint_Error'Identity,
"Invalid array rank"
);
end if;
Rows := Links.Array_Size (Object, 0);
Columns := Links.Array_Size (Object, 1);
end Check_Type;
function Columns (Object : value_t) return Natural is
Columns : size_t;
Rows : size_t;
begin
Check_Type (Object, Rows, Columns);
return Natural (Columns);
end Columns;
function Get
( Object : value_t;
Row : Positive;
Column : Positive
) return Element_Type is
Columns : size_t;
Rows : size_t;
begin
Check_Type (Object, Rows, Columns);
if size_t (Column) > Columns or else size_t (Row) > Rows then
Raise_Exception
( Constraint_Error'Identity,
"Subscript error"
);
end if;
return Get_Data (Object)
( Rows * size_t (Column - 1) + size_t (Row - 1)
);
end Get;
function Rows (Object : value_t) return Natural is
Columns : size_t;
Rows : size_t;
begin
Check_Type (Object, Rows, Columns);
return Natural (Rows);
end Rows;
procedure Set
( Object : value_t;
Row : Positive;
Column : Positive;
Element : Element_Type
) is
Columns : size_t;
Rows : size_t;
begin
Check_Type (Object, Rows, Columns);
if size_t (Column) > Columns or else size_t (Row) > Rows then
Raise_Exception
( Constraint_Error'Identity,
"Subscript error"
);
end if;
Get_Data (Object)
( Rows * size_t (Column - 1) + size_t (Row - 1)
) := Element;
end Set;
function To_Julia (Value : Element_Array_Type) return value_t is
Result : value_t;
Kind_Of : constant datatype_t :=
Links.Apply_Array_Type (Julia_Type, 2);
begin
Result := Links.Alloc_Array_2D
( Kind_Of,
Value'Length (1),
Value'Length (2)
);
if Value'Length (1) > 0 and then Value'Length (2) > 0 then
declare
Data : Flat_Array renames Get_Data (Result).all;
Count : size_t := 0;
begin
for Column in Value'Range (2) loop
for Row in Value'Range (1) loop
Data (Count) := Value (Row, Column);
Count := Count + 1;
end loop;
end loop;
end;
end if;
return Result;
end To_Julia;
function Value (Object : value_t) return Element_Array_Type is
Columns : size_t;
Rows : size_t;
begin
Check_Type (Object, Rows, Columns);
declare
Value : Element_Array_Type
( 1..Row_Index_Type'Base (Rows),
1..Column_Index_Type'Base (Columns)
);
begin
if Value'Length (1) > 0 and then Value'Length (2) > 0 then
declare
Data : Flat_Array renames Get_Data (Object).all;
Count : size_t := 0;
begin
for Column in Value'Range (2) loop
for Row in Value'Range (1) loop
Value (Row, Column) := Data (Count);
Count := Count + 1;
end loop;
end loop;
end;
end if;
return Value;
end;
end Value;
end Julia.Generic_2D_Array;
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