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-----------------------------------------------------------------------
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-- GtkAda - Ada95 binding for the Gimp Toolkit --
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-- Copyright (C) 2006, AdaCore --
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-- This library is free software; you can redistribute it and/or --
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-- modify it under the terms of the GNU General Public --
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-- License as published by the Free Software Foundation; either --
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-- version 2 of the License, or (at your option) any later version. --
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-- This library is distributed in the hope that it will be useful, --
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
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-- General Public License for more details. --
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-- You should have received a copy of the GNU General Public --
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-- License along with this library; if not, write to the --
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-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
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-- Boston, MA 02111-1307, USA. --
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-----------------------------------------------------------------------
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-- This package is purely internal to GtkAda.
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-- It was moved out of Gtkada.Bindings for elaboration circularity issues
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with Ada.Unchecked_Conversion;
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-- The following functions ease bindings: when a C function returns an
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-- array or a pointer to an array, it returns a C array, ie which doesn't
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-- contain bounds. The size of the array is generally reported separately.
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-- The following definitions are suitable for use internally in the
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-- binding, but should not, when possible, be made visble to the user,
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-- since they don't behave like usual Ada arrays ('Last is irrelevant for
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-- For instance, if a C function has the following profile:
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-- gint* get_sizes (GtkIconTheme* theme); -- 0 terminated array
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-- when the binding is:
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-- function Internal (Theme) return Unbounded_Gint_Array_Access;
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-- and you need to compute for yourself the number of elements, and
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-- return a Glib.Gint_Array to the user.
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-- If the C function has the following profile:
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-- gboolean get_attach_points (theme, GdkPoint** p, gint* n);
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-- then the binding is:
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-- function Internal (Theme : System.Address;
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-- Points : out Unbounded_Points_Array_Access;
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-- N : access Gint) return Gboolean;
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-- and you do the following:
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-- R : aliased Unbounded_Points_Array_Access;
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-- Tmp : constant Gboolean :=
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-- Internal (.., R'Unchecked_Access, N'Unchecked_Access);
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-- Result : Gdk_Points_Array (1 .. Natural (N)) :=
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-- To_Gint_Array (R, Natural (N));
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type T_Array is array (Index range <>) of T;
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package Unbounded_Arrays is
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is array (Index range Index'Val (1) .. Index'Last) of T;
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pragma Convention (C, Unbounded_Array);
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type Unbounded_Array_Access is access Unbounded_Array;
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procedure G_Free (Arr : Unbounded_Array_Access);
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(Arr : Unbounded_Array_Access; N : Index) return T_Array;
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function Convert is new Ada.Unchecked_Conversion
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(System.Address, Unbounded_Array_Access);
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pragma Import (C, G_Free, "g_free");
added
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src/gtkada-c.ads
