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-- GHDL Run Time (GRT) - Hooks.
-- Copyright (C) 2002 - 2014 Tristan Gingold
--
-- This program 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 program 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 program. If not, see <gnu.org/licenses>.
--
-- 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 Grt.Astdio;
package body Grt.Hooks is
type Hooks_Cell;
type Hooks_Cell_Acc is access Hooks_Cell;
type Hooks_Cell is record
Hooks : Hooks_Acc;
Next : Hooks_Cell_Acc;
end record;
First_Hooks : Hooks_Cell_Acc := null;
Last_Hooks : Hooks_Cell_Acc := null;
procedure Register_Hooks (Hooks : Hooks_Acc)
is
Cell : Hooks_Cell_Acc;
begin
Cell := new Hooks_Cell'(Hooks => Hooks,
Next => null);
if Last_Hooks = null then
First_Hooks := Cell;
else
Last_Hooks.Next := Cell;
end if;
Last_Hooks := Cell;
end Register_Hooks;
type Hook_Cell;
type Hook_Cell_Acc is access Hook_Cell;
type Hook_Cell is record
Hook : Proc_Hook_Type;
Next : Hook_Cell_Acc;
end record;
-- Chain of cycle hooks.
Cycle_Hook : Hook_Cell_Acc := null;
Last_Cycle_Hook : Hook_Cell_Acc := null;
procedure Register_Cycle_Hook (Proc : Proc_Hook_Type)
is
Cell : Hook_Cell_Acc;
begin
Cell := new Hook_Cell'(Hook => Proc,
Next => null);
if Cycle_Hook = null then
Cycle_Hook := Cell;
else
Last_Cycle_Hook.Next := Cell;
end if;
Last_Cycle_Hook := Cell;
end Register_Cycle_Hook;
procedure Call_Cycle_Hooks
is
Cell : Hook_Cell_Acc;
begin
Cell := Cycle_Hook;
while Cell /= null loop
Cell.Hook.all;
Cell := Cell.Next;
end loop;
end Call_Cycle_Hooks;
function Call_Option_Hooks (Opt : String) return Boolean
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Option /= null
and then Cell.Hooks.Option.all (Opt)
then
return True;
end if;
Cell := Cell.Next;
end loop;
return False;
end Call_Option_Hooks;
procedure Call_Help_Hooks
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Help /= null then
Cell.Hooks.Help.all;
end if;
Cell := Cell.Next;
end loop;
end Call_Help_Hooks;
procedure Call_Init_Hooks
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Init /= null then
Cell.Hooks.Init.all;
end if;
Cell := Cell.Next;
end loop;
end Call_Init_Hooks;
procedure Call_Start_Hooks
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Start /= null then
Cell.Hooks.Start.all;
end if;
Cell := Cell.Next;
end loop;
end Call_Start_Hooks;
procedure Call_Finish_Hooks
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Finish /= null then
Cell.Hooks.Finish.all;
end if;
Cell := Cell.Next;
end loop;
end Call_Finish_Hooks;
procedure Proc_Hook_Nil is
begin
null;
end Proc_Hook_Nil;
procedure Display_Hooks_Desc
is
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Desc /= null then
Grt.Astdio.Put_Line (Cell.Hooks.Desc.all);
end if;
Cell := Cell.Next;
end loop;
end Display_Hooks_Desc;
function Has_Feature (Name : String) return Boolean
is
Len : constant Natural := Name'Length;
Cell : Hooks_Cell_Acc;
begin
Cell := First_Hooks;
while Cell /= null loop
if Cell.Hooks.Desc /= null then
declare
F : String renames Cell.Hooks.Desc.all;
begin
if F'Length > Len
and then F (F'First .. F'First + Len - 1) = Name
and then F (F'First + Len) = ':'
then
return True;
end if;
end;
end if;
Cell := Cell.Next;
end loop;
return False;
end Has_Feature;
end Grt.Hooks;
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