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diff --git a/src/vhdl/vhdl-elocations_meta.ads b/src/vhdl/vhdl-elocations_meta.ads
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+--  Meta description of elocations
+--  Copyright (C) 2017 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 GHDL; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+
+with Types; use Types;
+with Iirs; use Iirs;
+
+package Vhdl.Elocations_Meta is
+   --  The enumeration of all fields defined in iirs.
+   type Fields_Enum is
+     (
+      Field_Start_Location,
+      Field_Right_Paren_Location,
+      Field_End_Location,
+      Field_Is_Location,
+      Field_Begin_Location,
+      Field_Then_Location,
+      Field_Loop_Location,
+      Field_Generate_Location,
+      Field_Generic_Location,
+      Field_Port_Location,
+      Field_Generic_Map_Location,
+      Field_Port_Map_Location,
+      Field_Arrow_Location,
+      Field_Colon_Location,
+      Field_Assign_Location
+     );
+   pragma Discard_Names (Fields_Enum);
+
+   --  Get the name of a field.
+   function Get_Field_Image (F : Fields_Enum) return String;
+
+
+   --  Get/Set a field.
+   function Get_Location_Type
+      (N : Iir; F : Fields_Enum) return Location_Type;
+   procedure Set_Location_Type
+      (N : Iir; F : Fields_Enum; V: Location_Type);
+
+   function Has_Start_Location (K : Iir_Kind) return Boolean;
+   function Has_Right_Paren_Location (K : Iir_Kind) return Boolean;
+   function Has_End_Location (K : Iir_Kind) return Boolean;
+   function Has_Is_Location (K : Iir_Kind) return Boolean;
+   function Has_Begin_Location (K : Iir_Kind) return Boolean;
+   function Has_Then_Location (K : Iir_Kind) return Boolean;
+   function Has_Loop_Location (K : Iir_Kind) return Boolean;
+   function Has_Generate_Location (K : Iir_Kind) return Boolean;
+   function Has_Generic_Location (K : Iir_Kind) return Boolean;
+   function Has_Port_Location (K : Iir_Kind) return Boolean;
+   function Has_Generic_Map_Location (K : Iir_Kind) return Boolean;
+   function Has_Port_Map_Location (K : Iir_Kind) return Boolean;
+   function Has_Arrow_Location (K : Iir_Kind) return Boolean;
+   function Has_Colon_Location (K : Iir_Kind) return Boolean;
+   function Has_Assign_Location (K : Iir_Kind) return Boolean;
+end Vhdl.Elocations_Meta;