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--  VHDL libraries handling.
--  Copyright (C) 2018 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>.
with Types; use Types;
with Vhdl.Nodes; use Vhdl.Nodes;

package Vhdl.Sem_Lib is
   --  Start the analyse a file (ie load and parse it).
   --  The file is read from the current directory (unless FILE_NAME is an
   --    absolute path).
   --  Emit an error if the file cannot be opened.
   --  Return NULL_IIR in case of parse error.
   function Load_File_Name (File_Name: Name_Id) return Iir_Design_File;
   function Load_File (File : Source_File_Entry) return Iir_Design_File;

   --  Load, parse, analyze, back-end a design_unit if necessary.
   --  Check Design_Unit is not obsolete.
   --  LOC is the location where the design unit was needed, in case of error.
   procedure Load_Design_Unit
     (Design_Unit: Iir_Design_Unit; Loc : Location_Type);
   procedure Load_Design_Unit (Design_Unit: Iir_Design_Unit; Loc : Iir);

   --  Load and parse DESIGN_UNIT.
   --  Contrary to Load_Design_Unit, the design_unit is not analyzed.
   --  Also, the design_unit must not have been already loaded.
   --  Used almost only by Load_Design_Unit.
   procedure Load_Parse_Design_Unit
     (Design_Unit: Iir_Design_Unit; Loc : Location_Type);

      -- Load an already analyzed primary unit NAME from library LIBRARY
   -- and compile it.
   -- Return NULL_IIR if not found (ie, NAME does not correspond to a
   --   library unit identifier).
   function Load_Primary_Unit
     (Library: Iir_Library_Declaration; Name: Name_Id; Loc : Iir)
      return Iir_Design_Unit;

   -- Load an secondary unit of primary unit PRIMARY and analyse it.
   -- NAME must be set only for an architecture.
   function Load_Secondary_Unit
     (Primary: Iir_Design_Unit; Name: Name_Id; Loc : Iir)
     return Iir_Design_Unit;

   --  Analyze UNIT.
   procedure Finish_Compilation
     (Unit : Iir_Design_Unit; Main : Boolean := False);

   --  Free the dependence list of DESIGN.  For libghdl.
   procedure Free_Dependence_List (Design : Iir_Design_Unit);
end Vhdl.Sem_Lib;