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+--  GHDL driver - compile commands.
+--  Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
+--
+--  GHDL 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, or (at your option) any later
+--  version.
+--
+--  GHDL 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 GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+with GNAT.OS_Lib; use GNAT.OS_Lib;
+
+package Ghdlcomp is
+   --  This procedure is called at start of commands which call
+   --  finish_compilation to generate code.
+   type Compile_Init_Acc is access procedure (Analyze_Only : Boolean);
+
+   --  This procedure is called for elaboration.
+   --  CMD_NAME is the name of the command, used to report errors.
+   --  ARGS is the argument list, starting from the unit name to be elaborated.
+   --   The procedure should extract the unit.
+   --  OPT_ARG is the index of the first argument from ARGS to be used as
+   --   a run option.
+   type Compile_Elab_Acc is access procedure
+     (Cmd_Name : String; Args : Argument_List; Opt_Arg : out Natural);
+
+   --  Use ARGS as run options.
+   --  Should do all the work.
+   type Set_Run_Options_Acc is access
+     procedure (Args : Argument_List);
+
+   --  Run the simulation.
+   --  All the parameters were set through calling Compile_Elab and
+   --  Set_Run_Options.
+   type Run_Acc is access procedure;
+
+   --  Called when an analysis/elaboration option is decoded.
+   --  Return True if OPTION is known (and do the side effects).
+   --  No parameters are allowed.
+   type Decode_Option_Acc is access function (Option : String) return Boolean;
+
+   --  Disp help for options decoded by Decode_Option.
+   type Disp_Long_Help_Acc is access procedure;
+
+   --  All the hooks gathered.
+   --  A record is used to be sure all hooks are set.
+   type Hooks_Type is record
+      Compile_Init : Compile_Init_Acc := null;
+      Compile_Elab : Compile_Elab_Acc := null;
+      Set_Run_Options : Set_Run_Options_Acc := null;
+      Run : Run_Acc := null;
+      Decode_Option : Decode_Option_Acc := null;
+      Disp_Long_Help : Disp_Long_Help_Acc := null;
+   end record;
+
+   Hooks : Hooks_Type;
+
+   --  Register commands.
+   procedure Register_Commands;
+end Ghdlcomp;