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------------------------------------------------------------------------------
-- G N A T C O L L --
-- --
-- Copyright (C) 2020, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, 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 MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
with Interfaces.C.Strings;
with System;
with GNATCOLL.Python.Errors;
use type System.Address;
package body GNATCOLL.Python.Capsule is
package C renames Interfaces.C.Strings;
package PyErr renames GNATCOLL.Python.Errors;
--------------------------
-- PyCapsule_CheckExact --
--------------------------
function PyCapsule_CheckExact (Object : PyObject) return Boolean
is
begin
return Py_TYPE (Object) = PyCapsule_Type;
end PyCapsule_CheckExact;
--------------------------
-- PyCapsule_GetContext --
--------------------------
function PyCapsule_GetContext (Capsule : PyCapsule) return System.Address
is
function Internal (Capsule : PyCapsule) return System.Address;
pragma Import (C, Internal, "PyCapsule_GetContext");
Result : System.Address;
begin
Result := Internal (Capsule => Capsule);
if Result = System.Null_Address and then
PyErr.PyErr_Occurred /= null
then
raise PyCapsule_Error with "cannot get capsule context";
end if;
return Result;
end PyCapsule_GetContext;
---------------------------
-- PyCapsule_GetPointer --
---------------------------
function PyCapsule_GetPointer
(Capsule : PyCapsule;
Name : String)
return System.Address
is
function Internal
(Capsule : PyCapsule;
Name : String)
return System.Address;
pragma Import (C, Internal, "PyCapsule_GetPointer");
Result : System.Address;
begin
Result := Internal (Capsule => Capsule, Name => Name & ASCII.NUL);
if Result = System.Null_Address then
raise PyCapsule_Error
with "cannot retrieve pointer from capsule " & Name;
end if;
return Result;
end PyCapsule_GetPointer;
function PyCapsule_GetPointer (Capsule : PyCapsule) return System.Address
is
function Internal
(Capsule : PyCapsule;
Name : System.Address)
return System.Address;
pragma Import (C, Internal, "PyCapsule_GetPointer");
Result : System.Address;
begin
Result := Internal (Capsule => Capsule,
Name => System.Null_Address);
if Result = System.Null_Address then
raise PyCapsule_Error
with "cannot retrieve pointer from unnamed capsule";
end if;
return Result;
end PyCapsule_GetPointer;
-------------------
-- PyCapsule_New --
-------------------
function PyCapsule_New
(Pointer : System.Address;
Name : String;
Destructor : PyCapsule_Destructor := null)
return PyCapsule
is
function Internal
(Pointer : System.Address;
Name : C.chars_ptr;
Destructor : PyCapsule_Destructor)
return PyCapsule;
pragma Import (C, Internal, "PyCapsule_New");
Internal_Name : constant C.chars_ptr := C.New_String (Name & ASCII.NUL);
Result : PyCapsule;
begin
Result := Internal (Pointer => Pointer,
Name => Internal_Name,
Destructor => Destructor);
if Result = null then
raise PyCapsule_Error with "cannot create capsule " & Name;
end if;
return Result;
end PyCapsule_New;
function PyCapsule_New
(Pointer : System.Address;
Destructor : PyCapsule_Destructor := null)
return PyCapsule
is
function Internal
(Pointer : System.Address;
Name : System.Address;
Destructor : PyCapsule_Destructor)
return PyCapsule;
pragma Import (C, Internal, "PyCapsule_New");
Result : PyCapsule;
begin
Result := Internal (Pointer => Pointer,
Name => System.Null_Address,
Destructor => Destructor);
if Result = null then
raise PyCapsule_Error with "cannot create unnamed capsule";
end if;
return Result;
end PyCapsule_New;
--------------------------
-- PyCapsule_SetContext --
--------------------------
procedure PyCapsule_SetContext
(Capsule : PyCapsule; Context : System.Address)
is
function Internal
(Capsule : PyCapsule; Context : System.Address)
return Integer;
pragma Import (C, Internal, "PyCapsule_SetContext");
Status : Integer;
begin
Status := Internal (Capsule => Capsule, Context => Context);
if Status /= 0 then
raise PyCapsule_Error with "cannot set capsule context";
end if;
end PyCapsule_SetContext;
end GNATCOLL.Python.Capsule;
|
