From 609cf95dc0ecaff0547ba971c2241cdad8f5dd22 Mon Sep 17 00:00:00 2001 From: root Date: Tue, 29 Aug 2017 19:57:58 +0100 Subject: add power for ilo2 --- INF/ILO2.pm | 71 +++++++++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 50 insertions(+), 21 deletions(-) diff --git a/INF/ILO2.pm b/INF/ILO2.pm index de31e2a..6082336 100644 --- a/INF/ILO2.pm +++ b/INF/ILO2.pm @@ -405,41 +405,70 @@ print Dumper($document); sub get_host_power($) { my ($self) = @_; - die "soup"; $self->login() unless defined $self->{stoken}; - my $get = GET( $self->{ilo_url} . '/json/host_power' ); + my $get = GET( $self->{ilo_url}. '/dvirtpwr.htm' ); - $get->header( 'cookie' => 'sessionKey=' . $self->{stoken} ); + $get->header( 'cookie' => $self->{stoken} ); my $res = $self->{ua}->request($get); unless ( $res->is_success ) { - print STDERR " get host power - did not get 200\n"; - return undef; + print STDERR " $what - did not get 200\n"; + return 0; } - my $state = decode_json $res->content; + my $content=$res->content; + + return 0 unless $content =~ /serverPower="([A-Z0-9]+)"/ ; - return $state->{'hostpwr_state'}; + my $state=$1; +$state="OFF" if $state eq 'STANDBY'; + + print "Server Power is $state\n"; + +return $state; } -sub set_host_power($$) { - my ( $self, $what ) = @_; +sub set_host_power($$$) { + my ( $self, $thing,$other_thing ) = @_; - die "fish"; $self->login() unless defined $self->{stoken}; - my $post = POST( $self->{ilo_url} . '/json/host_power' ); - my $json = - '{"method":"' . $what . '","session_key":"' . $self->{stoken} . '"}'; - $post->header( 'Content-Type' => 'application/json' ); - $post->header( 'Content-Length' => length($json) ); - $post->content($json); - $post->header( 'cookie' => 'sessionKey=' . $self->{stoken} ); + my $get = GET( $self->{ilo_url}. '/dvirtpwr.htm' ); + $get->header( 'cookie' => $self->{stoken} ); + + my $res = $self->{ua}->request($get); + + unless ( $res->is_success ) { + print STDERR " $what - did not get 200\n"; + return 0; + } + +#cold Cold+Boot +#warn Reset +#hold Press+and+Hold +#press Momentary+Press + + + my $content=$res->content; + + return -1 unless $content =~ /signature="([A-Z0-9]+)"/ ; + + $self->{signature}=$1; + + my $form_content='signature='.$self->{signature}.'&'.$thing.'='.$other_thing; + + print "form_content=$form_content\n"; + + my $post = POST( $self->{ilo_url} . '/virtpwrpress.cgi' ); + $post->header( 'Content-Type' => 'application/x-www-form-urlencoded' ); + $post->header( 'Content-Length' => length($form_content) ); + $post->content($form_content); + $post->header( 'cookie' => $self->{stoken} ); my $res = $self->{ua}->request($post); @@ -453,18 +482,18 @@ sub set_host_power($$) { sub cold_boot($) { my $self = shift; - return $self->set_host_power('system_coldboot'); + return $self->set_host_power('cold','Cold+Boot'); } sub reset($) { my $self = shift; - return $self->set_host_power('system_reset'); + return $self->set_host_power('warm','Reset'); } sub off($) { my $self = shift; if ( $self->get_host_power =~ /ON/i ) { - return $self->set_host_power('hold_power_button'); + return $self->set_host_power('hold','Press+and+Hold'); } return 1; } @@ -472,7 +501,7 @@ sub off($) { sub on($) { my $self = shift; if ( $self->get_host_power =~ /OFF/i ) { - return $self->set_host_power('press_power_button'); + return $self->set_host_power('press','Momentary+Press'); } return 1; } -- cgit v1.2.3 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 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--  VHDL libraries handling.
--  Copyright (C) 2002, 2003, 2004, 2005 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 System;
with Interfaces.C_Streams;
with GNAT.OS_Lib;

with Logging; use Logging;
with Tables;
with Errorout; use Errorout;
with Options; use Options;
with Name_Table; use Name_Table;
with Str_Table;
with Files_Map;
with Flags;
with Std_Names;

with Vhdl.Tokens;
with Vhdl.Std_Package;
with Vhdl.Errors; use Vhdl.Errors;
with Vhdl.Scanner;
with Vhdl.Utils; use Vhdl.Utils;

package body Libraries is
   --  Chain of known libraries.  This is also the top node of all iir node.
   Libraries_Chain : Iir_Library_Declaration := Null_Iir;
   Libraries_Chain_Last : Iir_Library_Declaration := Null_Iir;

   --  Last design_file used.  Kept to speed-up operations.
   Last_Design_File : Iir_Design_File := Null_Iir;

   --  Table of library paths.
   package Paths is new Tables
     (Table_Index_Type => Integer,
      Table_Component_Type => Name_Id,
      Table_Low_Bound => 1,
      Table_Initial => 4);

   --  Report an error message.
   procedure Error_Lib_Msg (Msg : String) is
   begin
      Report_Msg (Msgid_Error, Library, No_Source_Coord, Msg);
   end Error_Lib_Msg;

   procedure Create_Virtual_Locations
   is
      use Files_Map;
      Library_Source_File : Source_File_Entry;
      Command_Source_File : Source_File_Entry;
   begin
      Library_Source_File := Create_Virtual_Source_File
        (Get_Identifier ("*libraries*"));
      Command_Source_File := Create_Virtual_Source_File
        (Get_Identifier ("*command line*"));
      Command_Line_Location := File_To_Location (Command_Source_File);
      Library_Location := File_To_Location (Library_Source_File);
   end Create_Virtual_Locations;

   --  Initialize paths table.
   --  Set the local path.
   procedure Initialize is
   begin
      --  Always look in current directory first.
      Paths.Init;
      Name_Nil := Get_Identifier ("");
      Paths.Append (Name_Nil);

      Local_Directory := Name_Nil;
      Work_Directory := Name_Nil;

      Libraries_Chain := Null_Iir;
      Std_Library := Null_Iir;
      Work_Library_Name := Std_Names.Name_Work;

      Create_Virtual_Locations;
   end Initialize;

   procedure Finalize is
   begin
      Paths.Free;
   end Finalize;

   function Path_To_Id (Path : String) return Name_Id is
   begin
      if Path (Path'Last) /= GNAT.OS_Lib.Directory_Separator then
         return Get_Identifier (Path & GNAT.OS_Lib.Directory_Separator);
      else
         return Get_Identifier (Path);
      end if;
   end Path_To_Id;

   procedure Add_Library_Path (Path : String)
   is
   begin
      if Path'Length = 0 then
         return;
      end if;
      Paths.Append (Path_To_Id (Path));
   end Add_Library_Path;

   function Get_Nbr_Paths return Natural is
   begin
      return Paths.Last;
   end Get_Nbr_Paths;

   function Get_Path (N : Natural) return Name_Id is
   begin
      if N not in Paths.First .. Paths.Last then
         raise Constraint_Error;
      end if;

      return Paths.Table (N);
   end Get_Path;

   -- Transform a library identifier into a file name.
   -- Very simple mechanism: just add '-objVV.cf' extension, where VV
   -- is the version.
   function Library_To_File_Name (Library: Iir_Library_Declaration)
                                 return String
   is
      use Flags;
   begin
      case Vhdl_Std is
         when Vhdl_87 =>
            return Image_Identifier (Library) & "-obj87.cf";
         when Vhdl_93 | Vhdl_00 | Vhdl_02 =>
            return Image_Identifier (Library) & "-obj93.cf";
         when Vhdl_08 =>
            return Image_Identifier (Library) & "-obj08.cf";
         when Vhdl_19 =>
            return Image_Identifier (Library) & "-obj19.cf";
      end case;
   end Library_To_File_Name;

   --  Search LIBRARY in the library path.
   procedure Search_Library_In_Path (Library : Iir)
   is
      use Flags;
      File_Name : constant String := Library_To_File_Name (Library);
      Library_Id : constant Name_Id := Get_Identifier (Library);
      Id_Len : constant Natural := Get_Name_Length (Library_Id);
   begin
      for I in Paths.First .. Paths.Last loop
         --  Try PATH/LIBxxx.cf
         declare
            Path : constant String :=
              Image (Paths.Table (I)) & File_Name & ASCII.NUL;
         begin
            if GNAT.OS_Lib.Is_Regular_File (Path'Address) then
               Set_Library_Directory (Library, Paths.Table (I));
               exit;
            end if;
         end;

         --  Try PATH/LIB/vNN/LIBxxx.cf
         declare
            Pfx : constant String := Image (Paths.Table (I));
            Pfx_Len : constant Natural := Pfx'Length;
            L : Natural;
            Path : String (1 .. Pfx_Len + Id_Len + 5 + File_Name'Length + 1);
         begin
            L := Pfx_Len;
            Path (1 .. L) := Pfx;
            Path (L + 1 .. L + Id_Len) := Image (Library_Id);
            L := L + Id_Len;
            Path (L + 1) := GNAT.OS_Lib.Directory_Separator;
            case Vhdl_Std is
               when Vhdl_87 =>
                  Path (L + 2 .. L + 4) := "v87";
               when Vhdl_93 | Vhdl_00 | Vhdl_02 =>
                  Path (L + 2 .. L + 4) := "v93";
               when Vhdl_08 =>
                  Path (L + 2 .. L + 4) := "v08";
               when Vhdl_19 =>
                  Path (L + 2 .. L + 4) := "v19";
            end case;
            L := L + 5;
            Path (L) := GNAT.OS_Lib.Directory_Separator;
            Path (L + 1 .. L + File_Name'Length) := File_Name;
            Path (L + File_Name'Length + 1) := Character'Val (0);
            if GNAT.OS_Lib.Is_Regular_File (Path'Address) then
               --  For Get_Identifier: keep only the path part (including the
               --  trailing path separator).
               Set_Library_Directory (Library, Get_Identifier (Path (1 .. L)));
               exit;
            end if;
         end;
      end loop;
   end Search_Library_In_Path;

   --  Set PATH as the path of the work library.
   procedure Set_Work_Library_Path (Path : String) is
   begin
      Work_Directory := Path_To_Id (Path);
      if not GNAT.OS_Lib.Is_Directory (Get_Address (Work_Directory))
        and then Is_Warning_Enabled (Warnid_Library)
      then
         --  This is a warning, since 'clean' action should not fail in
         --  this cases.
         Warning_Msg_Option
           (Warnid_Library,
            "directory '" & Path & "' set by --workdir= does not exist");
         --  raise Option_Error;
      end if;
   end Set_Work_Library_Path;

   --  Every design unit is put in this hash table to be quickly found by
   --  its (primary) identifier.
   Unit_Hash_Length : constant Name_Id := 127;
   subtype Hash_Id is Name_Id range 0 .. Unit_Hash_Length - 1;
   Unit_Hash_Table : array (Hash_Id) of Iir := (others => Null_Iir);

   --  Get the hash value for DESIGN_UNIT.
   --  Architectures use the entity name.
   function Get_Hash_Id_For_Unit (Design_Unit : Iir_Design_Unit) return Hash_Id
   is
      Lib_Unit : Iir;
      Id : Name_Id;
   begin
      if Get_Kind (Design_Unit) = Iir_Kind_Foreign_Module then
         Id := Get_Identifier (Design_Unit);
      else
         Lib_Unit := Get_Library_Unit (Design_Unit);
         case Iir_Kinds_Library_Unit (Get_Kind (Lib_Unit)) is
            when Iir_Kinds_Primary_Unit
               | Iir_Kind_Package_Body
               | Iir_Kind_Foreign_Module =>
               Id := Get_Identifier (Lib_Unit);
            when Iir_Kind_Architecture_Body =>
               --  Architectures are put with the entity identifier.
               Id := Get_Entity_Identifier_Of_Architecture (Lib_Unit);
         end case;
      end if;
      return Id mod Unit_Hash_Length;
   end Get_Hash_Id_For_Unit;

   --  Put DESIGN_UNIT into the unit hash table.
   procedure Add_Unit_Hash (Design_Unit : Iir)
   is
      Id : Hash_Id;
   begin
      Id := Get_Hash_Id_For_Unit (Design_Unit);
      Set_Hash_Chain (Design_Unit, Unit_Hash_Table (Id));
      Unit_Hash_Table (Id) := Design_Unit;
   end Add_Unit_Hash;

   --  Remove DESIGN_UNIT from the unit hash table.
   procedure Remove_Unit_Hash (Design_Unit : Iir)
   is
      Id : Hash_Id;
      Unit, Prev, Next : Iir_Design_Unit;
   begin
      Id := Get_Hash_Id_For_Unit (Design_Unit);
      Unit := Unit_Hash_Table (Id);
      Prev := Null_Iir;
      while Unit /= Null_Iir loop
         Next := Get_Hash_Chain (Unit);
         if Unit = Design_Unit then
            if Prev = Null_Iir then
               Unit_Hash_Table (Id) := Next;
            else
               Set_Hash_Chain (Prev, Next);
            end if;
            return;
         end if;
         Prev := Unit;
         Unit := Next;
      end loop;
      --  Not found.
      raise Internal_Error;
   end Remove_Unit_Hash;

   procedure Purge_Design_File (Design_File : Iir_Design_File)
   is
      Library : constant Iir := Get_Library (Design_File);
      Prev, File, Next : Iir_Design_File;
      Unit : Iir_Design_Unit;

      File_Name : constant Name_Id := Get_Design_File_Filename (Design_File);
      Dir_Name : constant Name_Id := Get_Design_File_Directory (Design_File);
   begin
      File := Get_Design_File_Chain (Library);
      Prev := Null_Iir;
      loop
         if File = Null_Iir then
            --  Not found ???
            return;
         end if;

         Next := Get_Chain (File);
         exit when Get_Design_File_Filename (File) = File_Name
           and then Get_Design_File_Directory (File) = Dir_Name;

         Prev := File;
         File := Next;
      end loop;

      --  Remove from library.
      if Prev = Null_Iir then
         Set_Design_File_Chain (Library, Next);
      else
         Set_Chain (Prev, Next);
      end if;

      --  Remove all units from unit hash table.
      Unit := Get_First_Design_Unit (File);
      while Unit /= Null_Iir loop
         Remove_Unit_Hash (Unit);
         Unit := Get_Chain (Unit);
      end loop;

      --  Clear the Last_Design_File cache.
      if Last_Design_File = Design_File then
         Last_Design_File := Null_Iir;
      end if;
   end Purge_Design_File;

   -- Load the contents of a library from a map file.
   -- The format of this file, used by save_library and load_library is
   -- as follow:
   --
   -- file_format ::= header { design_file_format }
   -- header ::= v 3
   -- design_file_format ::=
   --      filename_format { design_unit_format  }
   -- filename_format ::=
   --      FILE directory "filename" "file_time_stamp" "analyze_time_stamp":
   -- design_unit_format ::= entity_format
   --                        | architecture_format
   --                        | package_format
   --                        | package_body_format
   --                        | configuration_format
   --                        | context_format
   -- position_format ::= LINE(POS) + OFF on DATE
   -- entity_format ::=
   --      ENTITY identifier AT position_format ;
   -- architecture_format ::=
   --      ARCHITECTURE identifier of name AT position_format ;
   -- package_format ::=
   --      PACKAGE identifier AT position_format [BODY] ;
   -- package_body_format ::=
   --      PACKAGE BODY identifier AT position_format ;
   -- configuration_format ::=
   --      CONFIGURATION identifier AT position_format ;
   -- context_format ::=
   --      CONTEXT identifier AT position_format ;
   --
   -- The position_format meaning is:
   --       LINE is the line number (first line is number 1),
   --       POS is the offset of this line number, as a source_ptr value,
   --       OFF is the offset in the line, starting with 0.
   --       DATE is the symbolic date of analysis (order).
   --
   -- Return TRUE if the library was found.
   function Load_Library (Library: Iir_Library_Declaration) return Boolean
   is
      use Vhdl.Scanner;
      use Vhdl.Tokens;

      File : Source_File_Entry;

      --  Report an error message and abort.
      procedure Bad_Library_Format;
      pragma No_Return (Bad_Library_Format);

      procedure Bad_Library_Format is
      begin
         Error_Lib_Msg (Image (Files_Map.Get_File_Name (File)) &
                          ": bad library format");
         raise Compilation_Error;
      end Bad_Library_Format;

      procedure Scan_Expect (Tok: Token_Type) is
      begin
         Scan;
         if Current_Token /= Tok then
            Bad_Library_Format;
         end if;
      end Scan_Expect;

      function Current_Time_Stamp return Time_Stamp_Id is
      begin
         if Current_String_Length /= Time_Stamp_String'Length then
            Bad_Library_Format;
         end if;
         return Time_Stamp_Id (Current_String_Id);
      end Current_Time_Stamp;

      function String_To_Name_Id return Name_Id
      is
         Len : constant Nat32 := Current_String_Length;
         Str_Id : constant String8_Id := Current_String_Id;
         Buf : String (1 .. Natural (Len));
      begin
         for I in 1 .. Len loop
            Buf (Natural (I)) := Str_Table.Char_String8 (Str_Id, I);
         end loop;
         --  FIXME: should remove last string.
         return Get_Identifier (Buf);
      end String_To_Name_Id;

      Trace_Library_Load : constant Boolean := False;

      Design_Unit, Last_Design_Unit : Iir_Design_Unit;
      Lib_Ident : constant Name_Id := Get_Identifier (Library);

      Design_File: Iir_Design_File;
      Library_Unit: Iir;
      Line, Col: Int32;
      File_Id : Name_Id;
      File_Dir : Name_Id;
      Pos: Source_Ptr;
      Date: Date_Type;
      Max_Date: Date_Type := Date_Valid'First;
      Dir : Name_Id;
   begin
      -- Check the library was not already loaded.
      pragma Assert (Get_Design_File_Chain (Library) = Null_Iir);

      if Trace_Library_Load then
         Log_Line ("Load library " & Image (Lib_Ident));
      end if;

      -- Try to open the library file map.
      Dir := Get_Library_Directory (Library);
      if Dir = Null_Identifier then
         Search_Library_In_Path (Library);
         Dir := Get_Library_Directory (Library);
      end if;
      if Dir = Null_Identifier then
         --  Not found.
         Set_Date (Library, Date_Valid'First);
         return False;
      end if;

      File_Id := Get_Identifier (Library_To_File_Name (Library));
      if Trace_Library_Load then
         Log_Line ("  from " & Image (Dir) & Image (File_Id));
      end if;

      File := Files_Map.Read_Source_File (Dir, File_Id);
      if File = No_Source_File_Entry then
         --  Not found.
         Set_Date (Library, Date_Valid'First);
         return False;
      end if;

      Vhdl.Scanner.Set_File (File);

      --  Parse header.
      Scan;
      if Current_Token /= Tok_Identifier
        or else Current_Identifier /= Std_Names.Name_V
      then
         Bad_Library_Format;
      end if;
      Scan_Expect (Tok_Integer);
      if Current_Iir_Int64 /= 4 then
         Bad_Library_Format;
      end if;
      Scan;

      Last_Design_Unit := Null_Iir;
      while Current_Token /= Tok_Eof loop
         if Current_Token = Tok_File then
            -- This is a new design file.
            Design_File := Create_Iir (Iir_Kind_Design_File);

            Scan;
            if Current_Token = Tok_Dot then
               --  The filename is local, use the directory of the library.
               if Dir = Name_Nil then
                  File_Dir := Files_Map.Get_Home_Directory;
               else
                  File_Dir := Dir;
               end if;
            elsif Current_Token = Tok_Slash then
               --  The filename is an absolute file.
               File_Dir := Null_Identifier;
            elsif Current_Token = Tok_String then
               File_Dir := String_To_Name_Id;
            else
               Bad_Library_Format;
            end if;

            Set_Design_File_Directory (Design_File, File_Dir);

            Scan_Expect (Tok_String);
            Set_Design_File_Filename (Design_File, String_To_Name_Id);

            -- FIXME: check the file name is uniq.

            Set_Parent (Design_File, Library);

            --  Prepend.
            Set_Chain (Design_File, Get_Design_File_Chain (Library));
            Set_Design_File_Chain (Library, Design_File);

            Scan_Expect (Tok_String);
            if Current_String_Length /= File_Checksum_String'Length then
               Bad_Library_Format;
            end if;
            Set_File_Checksum
              (Design_File, File_Checksum_Id (Current_String_Id));

            Scan_Expect (Tok_String);
            Set_Analysis_Time_Stamp (Design_File, Current_Time_Stamp);

            Scan_Expect (Tok_Colon);
            Scan;
            Last_Design_Unit := Null_Iir;
         else
            -- This is a new design unit.
            Design_Unit := Create_Iir (Iir_Kind_Design_Unit);
            Set_Design_File (Design_Unit, Design_File);
            case Current_Token is
               when Tok_Entity =>
                  Library_Unit := Create_Iir (Iir_Kind_Entity_Declaration);
                  Scan;
               when Tok_Architecture =>
                  Library_Unit := Create_Iir (Iir_Kind_Architecture_Body);
                  Scan;
               when Tok_Configuration =>
                  Library_Unit :=
                    Create_Iir (Iir_Kind_Configuration_Declaration);
                  Scan;
               when Tok_Package =>
                  Scan;
                  if Current_Token = Tok_Body then
                     Library_Unit := Create_Iir (Iir_Kind_Package_Body);
                     Scan;
                  else
                     Library_Unit := Create_Iir (Iir_Kind_Package_Declaration);
                  end if;
               when Tok_Context =>
                  Library_Unit := Create_Iir (Iir_Kind_Context_Declaration);
                  Scan;
               when Tok_Vunit =>
                  Library_Unit := Create_Iir (Iir_Kind_Vunit_Declaration);
                  Scan;
               when Tok_Vmode =>
                  Library_Unit := Create_Iir (Iir_Kind_Vmode_Declaration);
                  Scan;
               when Tok_Vprop =>
                  Library_Unit := Create_Iir (Iir_Kind_Vprop_Declaration);
                  Scan;
               when others =>
                  Log_Line
                    ("load_library: line must start with " &
                     "'architecture', 'entity', 'package' or 'configuration'");
                  raise Internal_Error;
            end case;

            if Current_Token /= Tok_Identifier then
               raise Internal_Error;
            end if;
            Set_Identifier (Library_Unit, Current_Identifier);
            Set_Identifier (Design_Unit, Current_Identifier);

            if Get_Kind (Library_Unit) = Iir_Kind_Architecture_Body then
               declare
                  Ent : Iir;
               begin
                  Scan_Expect (Tok_Of);
                  Scan_Expect (Tok_Identifier);
                  Ent := Create_Iir (Iir_Kind_Simple_Name);
                  Set_Identifier (Ent, Current_Identifier);
                  Set_Entity_Name (Library_Unit, Ent);
               end;
            end if;

            -- Scan position.
            Scan_Expect (Tok_Identifier); -- at
            Scan_Expect (Tok_Integer);
            Line := Int32 (Current_Iir_Int64);
            Scan_Expect (Tok_Left_Paren);
            Scan_Expect (Tok_Integer);
            Pos := Source_Ptr (Current_Iir_Int64);
            Scan_Expect (Tok_Right_Paren);
            Scan_Expect (Tok_Plus);
            Scan_Expect (Tok_Integer);
            Col := Int32 (Current_Iir_Int64);
            Scan_Expect (Tok_On);
            Scan_Expect (Tok_Integer);
            Date := Date_Type (Current_Iir_Int64);

            Scan;
            if Get_Kind (Library_Unit) = Iir_Kind_Package_Declaration
              and then Current_Token = Tok_Body
            then
               Set_Need_Body (Library_Unit, True);
               Scan;
            end if;
            if Current_Token /= Tok_Semi_Colon then
               raise Internal_Error;
            end if;
            Scan;

            if False then
               Log_Line ("line:" & Int32'Image (Line)
                           & ", pos:" & Source_Ptr'Image (Pos));
            end if;

            -- Keep the position of the design unit.
            --Set_Location (Design_Unit, Location_Type (File));
            --Set_Location (Library_Unit, Location_Type (File));
            Set_Design_Unit_Source_Pos (Design_Unit, Pos);
            Set_Design_Unit_Source_Line (Design_Unit, Line);
            Set_Design_Unit_Source_Col (Design_Unit, Col);
            Set_Date (Design_Unit, Date);
            if Date > Max_Date then
               Max_Date := Date;
            end if;
            Set_Date_State (Design_Unit, Date_Disk);
            Set_Library_Unit (Design_Unit, Library_Unit);
            Set_Design_Unit (Library_Unit, Design_Unit);

            --  Add in the unit hash table.
            Add_Unit_Hash (Design_Unit);

            if Last_Design_Unit = Null_Iir then
               Set_First_Design_Unit (Design_File, Design_Unit);
            else
               Set_Chain (Last_Design_Unit, Design_Unit);
            end if;
            Last_Design_Unit := Design_Unit;
            Set_Last_Design_Unit (Design_File, Design_Unit);
         end if;
      end loop;
      Set_Date (Library, Max_Date);

      Vhdl.Scanner.Close_File;

      --  Don't need the library file anymore.
      Files_Map.Unload_Last_Source_File (File);

      return True;
   end Load_Library;

   -- Note: the scanner shouldn't be in use, since this procedure uses it.
   function Load_Std_Library (Build_Standard : Boolean := True) return Boolean
   is
      use Vhdl.Std_Package;
      Dir : Name_Id;
   begin
      --  This procedure must not be called twice.
      pragma Assert (Libraries_Chain = Null_Iir);

      Flags.Create_Flag_String;

      Vhdl.Std_Package.Create_First_Nodes;

      --  Create the library.
      Std_Library := Create_Iir (Iir_Kind_Library_Declaration);
      Set_Identifier (Std_Library, Std_Names.Name_Std);
      Set_Location (Std_Library, Library_Location);
      Libraries_Chain := Std_Library;
      Libraries_Chain_Last := Std_Library;

      if Build_Standard then
         Create_Std_Standard_Package (Std_Library);
         Add_Unit_Hash (Std_Standard_Unit);
      end if;

      if Flags.Bootstrap
        and then Work_Library_Name = Std_Names.Name_Std
      then
         Dir := Work_Directory;
      else
         Dir := Null_Identifier;
      end if;
      Set_Library_Directory (Std_Library, Dir);
      if Load_Library (Std_Library) = False
        and then not Flags.Bootstrap
      then
         Error_Msg_Option ("cannot find ""std"" library");
         return False;
      end if;

      if Build_Standard then
         --  Add the standard_file into the library.
         --  This is done after Load_Library, because it checks there is no
         --  previous files in the library.
         Set_Location (Std_Library, Get_Location (Standard_Package));
         Set_Parent (Std_Standard_File, Std_Library);
         Set_Chain (Std_Standard_File, Get_Design_File_Chain (Std_Library));
         Set_Design_File_Chain (Std_Library, Std_Standard_File);
      end if;

      Set_Visible_Flag (Std_Library, True);
      return True;
   end Load_Std_Library;

   procedure Load_Work_Library (Empty : Boolean := False)
   is
      use Std_Names;
   begin
      if Work_Library_Name = Name_Std then
         if not Flags.Bootstrap then
            Error_Msg_Option ("the WORK library cannot be STD");
            raise Option_Error;
         end if;
         Work_Library := Std_Library;
      else
         --  If the library is already known, just switch to it.  This is used
         --  for --work= option in the middle of files.
         Work_Library := Vhdl.Utils.Find_Name_In_Chain
           (Libraries_Chain, Work_Library_Name);
         if Work_Library /= Null_Iir then
            return;
         end if;

         Work_Library := Create_Iir (Iir_Kind_Library_Declaration);
         Set_Location (Work_Library, Library_Location);
         Set_Library_Directory (Work_Library, Work_Directory);

         Set_Identifier (Work_Library, Work_Library_Name);

         if not Empty then
            if Load_Library (Work_Library) = False then
               null;
            end if;
         else
            Set_Date (Work_Library, Date_Valid'First);
         end if;

         --  Add it to the list of libraries.
         Set_Chain (Libraries_Chain_Last, Work_Library);
         Libraries_Chain_Last := Work_Library;
      end if;
      Set_Visible_Flag (Work_Library, True);
   end Load_Work_Library;

   function Get_Library_No_Create (Ident : Name_Id)
                                  return Iir_Library_Declaration is
   begin
      --  The library work is a little bit special.
      if Ident = Std_Names.Name_Work or else Ident = Work_Library_Name then
         --  load_work_library must have been called before.
         pragma Assert (Work_Library /= Null_Iir);
         return Work_Library;
      end if;

      --  Check if the library has already been loaded.
      return Vhdl.Utils.Find_Name_In_Chain (Libraries_Chain, Ident);
   end Get_Library_No_Create;

   -- Get or create a library from an identifier.
   function Get_Library (Ident: Name_Id;
                         Loc : Location_Type;
                         Force : Boolean := False)
                        return Iir_Library_Declaration
   is
      Library: Iir_Library_Declaration;
   begin
      Library := Get_Library_No_Create (Ident);
      if Library /= Null_Iir then
         return Library;
      end if;

      --  This is a new library.
      --  Load_std_library must have been called before.
      pragma Assert (Ident /= Std_Names.Name_Std);

      Library := Create_Iir (Iir_Kind_Library_Declaration);
      Set_Location (Library, Library_Location);
      Set_Library_Directory (Library, Null_Identifier);
      Set_Identifier (Library, Ident);
      if Load_Library (Library) = False then
         if not Force then
            Error_Msg_Sem (+Loc, "cannot find resource library %i", +Ident);
         end if;
      end if;
      Set_Visible_Flag (Library, True);

      Set_Chain (Libraries_Chain_Last, Library);
      Libraries_Chain_Last := Library;

      return Library;
   end Get_Library;

   --  Return TRUE if UNIT1 and UNIT2 have identifiers for the same
   --  design unit identifier.
   --  eg: 'entity A' and 'package A' returns TRUE.
   function Is_Same_Library_Unit (Unit1, Unit2 : Iir) return Boolean
   is
      Entity_Name1, Entity_Name2: Name_Id;
      Unit1_Kind, Unit2_Kind : Iir_Kind;
   begin
      if Get_Identifier (Unit1) /= Get_Identifier (Unit2) then
         return False;
      end if;

      Unit1_Kind := Get_Kind (Unit1);
      Unit2_Kind := Get_Kind (Unit2);

      --  Package and package body are never the same library unit.
      if Unit1_Kind = Iir_Kind_Package_Declaration
        and then Unit2_Kind = Iir_Kind_Package_Body
      then
         return False;
      end if;
      if Unit2_Kind = Iir_Kind_Package_Declaration
        and then Unit1_Kind = Iir_Kind_Package_Body
      then
         return False;
      end if;

      --  Two architecture declarations are identical only if they also have
      --  the same entity name.
      if Unit1_Kind = Iir_Kind_Architecture_Body
        and then Unit2_Kind = Iir_Kind_Architecture_Body
      then
         Entity_Name1 := Get_Entity_Identifier_Of_Architecture (Unit1);
         Entity_Name2 := Get_Entity_Identifier_Of_Architecture (Unit2);
         if Entity_Name1 /= Entity_Name2 then
            return False;
         end if;
      end if;

      --  An architecture declaration never conflits with a library unit that
      --  is not an architecture declaration.
      if (Unit1_Kind = Iir_Kind_Architecture_Body
          and then Unit2_Kind /= Iir_Kind_Architecture_Body)
        or else
        (Unit1_Kind /= Iir_Kind_Architecture_Body
         and then Unit2_Kind = Iir_Kind_Architecture_Body)
      then
         return False;
      end if;

      return True;
   end Is_Same_Library_Unit;

   --  Return true iff DEP (an element of a dependence list) is design unit
   --  UNIT.
   function Is_Design_Unit (Dep : Iir; Unit : Iir) return Boolean
   is
      Lib_Unit : Iir;
   begin
      case Get_Kind (Dep) is
         when Iir_Kind_Design_Unit =>
            return Dep = Unit;
         when Iir_Kind_Selected_Name =>
            declare
               Lib : constant Iir := Get_Library (Get_Design_File (Unit));
            begin
               if Get_Identifier (Get_Prefix (Dep)) /= Get_Identifier (Lib)
               then
                  return False;
               end if;
            end;
            Lib_Unit := Get_Library_Unit (Unit);
            case Iir_Kinds_Library_Unit (Get_Kind (Lib_Unit)) is
               when Iir_Kinds_Primary_Unit
                  | Iir_Kind_Package_Body
                  | Iir_Kind_Foreign_Module =>
                  return Get_Identifier (Dep) = Get_Identifier (Lib_Unit);
               when Iir_Kind_Architecture_Body =>
                  return False;
            end case;
         when Iir_Kind_Entity_Aspect_Entity =>
            Lib_Unit := Get_Library_Unit (Unit);
            if Get_Kind (Lib_Unit) /= Iir_Kind_Architecture_Body then
               return False;
            end if;
            if Get_Identifier (Get_Architecture (Dep))
              /= Get_Identifier (Lib_Unit)
            then
               return False;
            end if;

            if Get_Entity (Dep) /= Get_Entity (Lib_Unit) then
               return False;
            end if;

            return True;

         when others =>
            Error_Kind ("is_design_unit", Dep);
      end case;
   end Is_Design_Unit;

   function Find_Design_Unit (Unit : Iir) return Iir_Design_Unit is
   begin
      case Get_Kind (Unit) is
         when Iir_Kind_Design_Unit
           | Iir_Kind_Foreign_Module =>
            return Unit;
         when Iir_Kind_Selected_Name =>
            declare
               Lib : Iir_Library_Declaration;
            begin
               Lib := Get_Library (Get_Identifier (Get_Prefix (Unit)),
                                   Get_Location (Unit));
               return Find_Primary_Unit (Lib, Get_Identifier (Unit));
            end;
         when Iir_Kind_Entity_Aspect_Entity =>
            return Find_Secondary_Unit
              (Get_Design_Unit (Get_Entity (Unit)),
               Get_Identifier (Get_Architecture (Unit)));
         when others =>
            Error_Kind ("find_design_unit", Unit);
      end case;
   end Find_Design_Unit;

   function Find_Design_File (Lib : Iir_Library_Declaration; Name : Name_Id)
                             return Iir
   is
      File : Iir;
   begin
      File := Get_Design_File_Chain (Lib);
      while Is_Valid (File) loop
         if Get_Design_File_Filename (File) = Name then
            return File;
         end if;
         File := Get_Chain (File);
      end loop;
      return Null_Iir;
   end Find_Design_File;

   --  Mark UNIT as obsolete.  Mark all units that depends on UNIT as
   --  obsolete.
   procedure Mark_Unit_Obsolete (Unit : Iir_Design_Unit)
   is
      Lib, File, Un : Iir;
      List : Iir_List;
      It : List_Iterator;
      El : Iir;
   begin
      Set_Date (Unit, Date_Obsolete);

      Lib := Libraries_Chain;
      while Is_Valid (Lib) loop
         File := Get_Design_File_Chain (Lib);
         while Is_Valid (File) loop
            Un := Get_First_Design_Unit (File);
            while Is_Valid (Un) loop
               if Get_Kind (Un) /= Iir_Kind_Foreign_Module then
                  List := Get_Dependence_List (Un);
               else
                  List := Null_Iir_List;
               end if;

               if List /= Null_Iir_List
                 and then Get_Date (Un) /= Date_Obsolete
               then
                  pragma Assert (Get_Date_State (Un) = Date_Analyze);

                  It := List_Iterate (List);
                  while Is_Valid (It) loop
                     El := Get_Element (It);

                     if Is_Design_Unit (El, Unit) then

                        --  Keep direct reference (for speed-up).
                        if Get_Kind (El) /= Iir_Kind_Design_Unit then
                           Vhdl.Utils.Free_Recursive (El);
                           Set_Element (It, Unit);
                        end if;

                        --  Recurse.
                        Mark_Unit_Obsolete (Un);
                     end if;
                     Next (It);
                  end loop;
               end if;

               Un := Get_Chain (Un);
            end loop;
            File := Get_Chain (File);
         end loop;
         Lib := Get_Chain (Lib);
      end loop;
   end Mark_Unit_Obsolete;

   --  This procedure is called when the DESIGN_UNIT (either the stub created
   --  when a library is read or created from a previous unit in a source
   --  file) has been replaced by a new unit.  Free everything but DESIGN_UNIT,
   --  because it may be referenced in other units (dependence...)
   --  FIXME: Isn't the library unit also referenced too ?
   procedure Free_Design_Unit (Design_Unit : Iir_Design_Unit)
   is
      Lib : Iir;
      Unit : Iir_Design_Unit;
      Dep_List : Iir_List;
   begin
      --  Free dependence list.
      Dep_List := Get_Dependence_List (Design_Unit);
      Destroy_Iir_List (Dep_List);
      Set_Dependence_List (Design_Unit, Null_Iir_List);

      --  Free default configuration of architecture (if any).
      Lib := Get_Library_Unit (Design_Unit);
      if Lib /= Null_Iir
        and then Get_Kind (Lib) = Iir_Kind_Architecture_Body
      then
         Free_Iir (Get_Entity_Name (Lib));
         Unit := Get_Default_Configuration_Declaration (Lib);
         if Unit /= Null_Iir then
            Free_Design_Unit (Unit);
         end if;
      end if;

      --  Free library unit.
      Free_Iir (Lib);
      Set_Library_Unit (Design_Unit, Null_Iir);
   end Free_Design_Unit;

   procedure Remove_Unit_From_File
     (Unit_Ref : Iir_Design_Unit; File : Iir_Design_File)
   is
      Prev : Iir_Design_Unit;
      Unit, Next : Iir_Design_Unit;
   begin
      Prev := Null_Iir;
      Unit := Get_First_Design_Unit (File);
      while Unit /= Null_Iir loop
         Next := Get_Chain (Unit);
         if Unit = Unit_Ref then
            if Prev = Null_Iir then
               Set_First_Design_Unit (File, Next);
            else
               Set_Chain (Prev, Next);
            end if;
            if Next = Null_Iir then
               Set_Last_Design_Unit (File, Prev);
            end if;
            return;
         end if;
         Prev := Unit;
         Unit := Next;
      end loop;
      --  Not found.
      raise Internal_Error;
   end Remove_Unit_From_File;

   -- Add or replace a design unit in the working library.
   procedure Add_Design_Unit_Into_Library
     (Unit : in Iir_Design_Unit; Keep_Obsolete : Boolean := False)
   is
      Design_File: Iir_Design_File;
      Design_Unit, Prev_Design_Unit : Iir_Design_Unit;
      Last_Unit : Iir_Design_Unit;
      Library_Unit: Iir;
      New_Library_Unit: Iir;
      Unit_Id : Name_Id;
      Date: Date_Type;
      New_Lib_Checksum : File_Checksum_Id;
      Id : Hash_Id;

      --  File name and dir name of DECL.
      File_Name : Name_Id;
      Dir_Name : Name_Id;
   begin
      --  As specified, the Chain must be not set.
      pragma Assert (Get_Chain (Unit) = Null_Iir);

      --  The unit must not be in the library.
      pragma Assert (Get_Date_State (Unit) = Date_Extern);

      --  Mark this design unit as being loaded.
      case Get_Kind (Unit) is
         when Iir_Kind_Design_Unit =>
            New_Library_Unit := Get_Library_Unit (Unit);
         when Iir_Kind_Foreign_Module =>
            New_Library_Unit := Unit;
         when others =>
            raise Internal_Error;
      end case;
      Unit_Id := Get_Identifier (New_Library_Unit);

      --  Set the date of the design unit as the most recently analyzed
      --  design unit.
      case Get_Date (Unit) is
         when Date_Parsed =>
            Set_Date_State (Unit, Date_Parse);
         when Date_Analyzed =>
            Date := Get_Date (Work_Library) + 1;
            Set_Date (Unit, Date);
            Set_Date (Work_Library, Date);
            Set_Date_State (Unit, Date_Analyze);
         when Date_Valid =>
            raise Internal_Error;
         when others =>
            raise Internal_Error;
      end case;

      --  Set file time stamp.
      declare
         File : constant Source_File_Entry :=
           Get_Design_File_Source (Get_Design_File (Unit));
      begin
         New_Lib_Checksum := Files_Map.Get_File_Checksum (File);
         File_Name := Files_Map.Get_File_Name (File);
         if GNAT.OS_Lib.Is_Absolute_Path (Image (File_Name)) then
            Dir_Name := Null_Identifier;
         else
            Dir_Name := Files_Map.Get_Home_Directory;
         end if;
      end;

      if Unit_Id = Null_Identifier then
         pragma Assert (Flags.Flag_Force_Analysis);
         return;
      end if;

      --  Try to find a design unit with the same name in the work library.
      Id := Get_Hash_Id_For_Unit (Unit);
      declare
         Design_Unit, Prev_Design_Unit : Iir_Design_Unit;
         Next_Design_Unit : Iir_Design_Unit;
      begin
         Design_Unit := Unit_Hash_Table (Id);
         Prev_Design_Unit := Null_Iir;
         while Design_Unit /= Null_Iir loop
            Next_Design_Unit := Get_Hash_Chain (Design_Unit);
            Design_File := Get_Design_File (Design_Unit);
            case Get_Kind (Design_Unit) is
               when Iir_Kind_Foreign_Module =>
                  Library_Unit := Design_Unit;
               when Iir_Kind_Design_Unit =>
                  Library_Unit := Get_Library_Unit (Design_Unit);
               when others =>
                  raise Internal_Error;
            end case;
            if Get_Identifier (Design_Unit) = Unit_Id
              and then Get_Library (Design_File) = Work_Library
              and then Is_Same_Library_Unit (New_Library_Unit, Library_Unit)
            then
               --  LIBRARY_UNIT and UNIT designate the same design unit.
               Mark_Unit_Obsolete (Design_Unit);

               --  Remove the old one from the hash table.
               --  Remove DESIGN_UNIT from the unit_hash.
               if Prev_Design_Unit = Null_Iir then
                  Unit_Hash_Table (Id) := Next_Design_Unit;
               else
                  Set_Hash_Chain (Prev_Design_Unit, Next_Design_Unit);
               end if;

               --  Remove DESIGN_UNIT from the design_file.
               --  If KEEP_OBSOLETE is True, units that are obsoleted by units
               --  in the same design file are kept.  This allows to process
               --  (pretty print, xrefs, ...) all units of a design file.
               --  But still remove units that are replaced (if a file was
               --  already in the library).
               if not Keep_Obsolete
                 or else Get_Date_State (Design_Unit) = Date_Disk
               then
                  Remove_Unit_From_File (Design_Unit, Design_File);

                  --  Put removed units in a list so that they are still
                  --  referenced.
                  Set_Chain (Design_Unit, Obsoleted_Design_Units);
                  Obsoleted_Design_Units := Design_Unit;
               end if;

               --  UNIT *must* replace library_unit if they don't belong
               --  to the same file.
               if Get_Design_File_Filename (Design_File) = File_Name
                 and then Get_Design_File_Directory (Design_File) = Dir_Name
               then
                  --  In the same file.
                  if Get_Date_State (Design_Unit) = Date_Analyze then
                     --  Warns only if we are not re-analyzing the file.
                     if Is_Warning_Enabled (Warnid_Library) then
                        Warning_Msg_Sem
                          (Warnid_Library, +Unit,
                           "redefinition of a library unit in "
                             & "same design file:");
                        Warning_Msg_Sem
                          (Warnid_Library, +Unit, "%n defined at %l is now %n",
                           (+Library_Unit, +Library_Unit, +New_Library_Unit));
                     end if;
                  else
                     --  Free the stub corresponding to the unit.  This is the
                     --  common case when a unit is reanalyzed after a change.
                     if not Keep_Obsolete then
                        Free_Design_Unit (Design_Unit);
                     end if;
                  end if;

                  --  Note: the current design unit should not be freed if
                  --  in use; unfortunatly, this is not obvious to check.
               else
                  if Is_Warning_Enabled (Warnid_Library)
                    and then Get_Kind (Library_Unit) in Iir_Kinds_Primary_Unit
                  then
                     if Get_Kind (Library_Unit) /= Get_Kind (New_Library_Unit)
                     then
                        Warning_Msg_Sem
                          (Warnid_Library, +Unit,
                           "changing definition of a library unit:");
                        Warning_Msg_Sem
                          (Warnid_Library, +Unit,
                           "%n is now %n", (+Library_Unit, +New_Library_Unit));
                     end if;
                     Warning_Msg_Sem
                       (Warnid_Library, +Unit,
                        "%n was also defined in file %i",
                        (+Library_Unit,
                         +Get_Design_File_Filename (Design_File)));
                  end if;
               end if;
               --  Continue to search as there can be several units with the
               --  same name (like package and package body).
            end if;

            Prev_Design_Unit := Design_Unit;
            Design_Unit := Next_Design_Unit;
         end loop;
      end;

      --  Try to find the design file in the library.
      --  First try the last one found.
      if Last_Design_File /= Null_Iir
        and then Get_Library (Last_Design_File) = Work_Library
        and then Get_Design_File_Filename (Last_Design_File) = File_Name
        and then Get_Design_File_Directory (Last_Design_File) = Dir_Name
      then
         Design_File := Last_Design_File;
      else
         --  Search.
         Design_File := Get_Design_File_Chain (Work_Library);
         while Design_File /= Null_Iir loop
            if Get_Design_File_Filename (Design_File) = File_Name
              and then Get_Design_File_Directory (Design_File) = Dir_Name
            then
               exit;
            end if;
            Design_File := Get_Chain (Design_File);
         end loop;
         Last_Design_File := Design_File;
      end if;

      if Design_File /= Null_Iir
        and then New_Lib_Checksum /= No_File_Checksum_Id
        and then
        (Get_File_Checksum (Design_File) = No_File_Checksum_Id
           or else not Files_Map.Is_Eq (New_Lib_Checksum,
                                        Get_File_Checksum (Design_File)))
      then
         --  FIXME: this test is not enough: what about reanalyzing
         --   unmodified files (this works only because the order is not
         --   changed).
         --  Design file is updated.
         --  Outdate all other units, overwrite the design_file.
         Set_File_Checksum (Design_File, New_Lib_Checksum);
         Design_Unit := Get_First_Design_Unit (Design_File);
         while Design_Unit /= Null_Iir loop
            if Design_Unit /= Unit then
               --  Mark other design unit as obsolete.
               Mark_Unit_Obsolete (Design_Unit);
               Remove_Unit_Hash (Design_Unit);
            else
               raise Internal_Error;
            end if;
            Prev_Design_Unit := Design_Unit;
            Design_Unit := Get_Chain (Design_Unit);

            --  Put it on the obsolete list so that it is always referenced.
            Set_Chain (Prev_Design_Unit, Obsoleted_Design_Units);
            Obsoleted_Design_Units := Prev_Design_Unit;
         end loop;
         Set_First_Design_Unit (Design_File, Null_Iir);
         Set_Last_Design_Unit (Design_File, Null_Iir);
      end if;

      if Design_File = Null_Iir then
         -- This is the first apparition of the design file.
         Design_File := Create_Iir (Iir_Kind_Design_File);
         Location_Copy (Design_File, Unit);

         Set_Design_File_Filename (Design_File, File_Name);
         Set_Design_File_Directory (Design_File, Dir_Name);

         Set_File_Checksum (Design_File, New_Lib_Checksum);
         Set_Parent (Design_File, Work_Library);
         Set_Chain (Design_File, Get_Design_File_Chain (Work_Library));
         Set_Design_File_Chain (Work_Library, Design_File);
      end if;

      --  Add DECL to DESIGN_FILE.
      Last_Unit := Get_Last_Design_Unit (Design_File);
      if Last_Unit = Null_Iir then
         pragma Assert (Get_First_Design_Unit (Design_File) = Null_Iir);
         Set_First_Design_Unit (Design_File, Unit);
      else
         pragma Assert (Get_First_Design_Unit (Design_File) /= Null_Iir);
         Set_Chain (Last_Unit, Unit);
      end if;
      Set_Last_Design_Unit (Design_File, Unit);
      Set_Design_File (Unit, Design_File);

      --  Add DECL in unit hash table.
      Set_Hash_Chain (Unit, Unit_Hash_Table (Id));
      Unit_Hash_Table (Id) := Unit;

      --  Update the analyzed time stamp.
      Set_Analysis_Time_Stamp (Design_File, Files_Map.Get_Os_Time_Stamp);
   end Add_Design_Unit_Into_Library;

   procedure Add_Design_File_Into_Library (File : in out Iir_Design_File)
   is
      Unit : Iir_Design_Unit;
      Next_Unit : Iir_Design_Unit;
      First_Unit : Iir_Design_Unit;
   begin
      Unit := Get_First_Design_Unit (File);
      First_Unit := Unit;
      Set_First_Design_Unit (File, Null_Iir);
      Set_Last_Design_Unit (File, Null_Iir);
      while Unit /= Null_Iir loop
         Next_Unit := Get_Chain (Unit);
         Set_Chain (Unit, Null_Iir);
         Libraries.Add_Design_Unit_Into_Library (Unit, True);
         Unit := Next_Unit;
      end loop;
      if First_Unit /= Null_Iir then
         File := Get_Design_File (First_Unit);
      end if;
   end Add_Design_File_Into_Library;

   -- Save the file map of library LIBRARY.
   procedure Save_Library (Library: Iir_Library_Declaration)
   is
      use System;
      use Interfaces.C_Streams;
      use GNAT.OS_Lib;
      Temp_Name: constant String := Image (Work_Directory)
        & '_' & Library_To_File_Name (Library) & ASCII.NUL;
      Mode : constant String := 'w' & ASCII.NUL;
      Stream : FILEs;
      Success : Boolean;

      --  Write a string to the temporary file.
      procedure WR (S : String)
      is
         Close_Res : int;
         pragma Unreferenced (Close_Res);
      begin
         if Integer (fwrite (S'Address, S'Length, 1, Stream)) /= 1 then
            Error_Lib_Msg
              ("cannot write library file for " & Image_Identifier (Library));
            Close_Res := fclose (Stream);
            Delete_File (Temp_Name'Address, Success);
            --  Ignore failure to delete the file.
            raise Option_Error;
         end if;
      end WR;

      --  Write a line terminator in the temporary file.
      procedure WR_LF is
      begin
         WR (String'(1 => ASCII.LF));
      end WR_LF;

      Design_File: Iir_Design_File;
      Design_Unit: Iir_Design_Unit;
      Library_Unit: Iir;
      Dir : Name_Id;

      Off, Line: Natural;
      Pos: Source_Ptr;
      Source_File : Source_File_Entry;
   begin
      --  Create a temporary file so that the real library is atomically
      --  updated, and won't be corrupted in case of Control-C, or concurrent
      --  writes.
      Stream := fopen (Temp_Name'Address, Mode'Address);

      if Stream = NULL_Stream then
         Error_Lib_Msg
           ("cannot create library file for " & Image_Identifier (Library));
         raise Option_Error;
      end if;

      --  Header: version.
      WR ("v 4");
      WR_LF;

      Design_File := Get_Design_File_Chain (Library);
      while Design_File /= Null_Iir loop
         --  Ignore std.standard as there is no corresponding file.
         if Design_File = Vhdl.Std_Package.Std_Standard_File then
            goto Continue;
         end if;
         Design_Unit := Get_First_Design_Unit (Design_File);

         if Design_Unit /= Null_Iir then
            WR ("file ");
            Dir := Get_Design_File_Directory (Design_File);
            if Dir = Null_Identifier then
               --  Absolute filenames.
               WR ("/");
            elsif Work_Directory = Name_Nil
              and then Dir = Files_Map.Get_Home_Directory
            then
               --  If the library is in the current directory, do not write
               --  it.  This allows to move the library file.
               WR (".");
            else
               WR ("""");
               WR (Image (Dir));
               WR ("""");
            end if;
            WR (" """);
            WR (Image (Get_Design_File_Filename (Design_File)));
            WR (""" """);
            WR (Files_Map.Get_File_Checksum_String
                  (Get_File_Checksum (Design_File)));
            WR (""" """);
            WR (Files_Map.Get_Time_Stamp_String
                  (Get_Analysis_Time_Stamp (Design_File)));
            WR (""":");
            WR_LF;
         end if;

         while Design_Unit /= Null_Iir loop
            Library_Unit := Get_Library_Unit (Design_Unit);

            WR ("  ");
            case Get_Kind (Library_Unit) is
               when Iir_Kind_Entity_Declaration =>
                  WR ("entity ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Architecture_Body =>
                  WR ("architecture ");
                  WR (Image_Identifier (Library_Unit));
                  WR (" of ");
                  WR (Image (Get_Entity_Identifier_Of_Architecture
                               (Library_Unit)));
               when Iir_Kind_Package_Declaration
                 | Iir_Kind_Package_Instantiation_Declaration =>
                  WR ("package ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Package_Body =>
                  WR ("package body ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Configuration_Declaration =>
                  WR ("configuration ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Context_Declaration =>
                  WR ("context ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Vunit_Declaration =>
                  WR ("vunit ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Vprop_Declaration =>
                  WR ("vprop ");
                  WR (Image_Identifier (Library_Unit));
               when Iir_Kind_Vmode_Declaration =>
                  WR ("vmode ");
                  WR (Image_Identifier (Library_Unit));
               when others =>
                  Error_Kind ("save_library", Library_Unit);
            end case;

            if Get_Date_State (Design_Unit) = Date_Disk then
               Pos := Get_Design_Unit_Source_Pos (Design_Unit);
               Line := Natural (Get_Design_Unit_Source_Line (Design_Unit));
               Off := Natural (Get_Design_Unit_Source_Col (Design_Unit));
            else
               Files_Map.Location_To_Coord (Get_Location (Design_Unit),
                                            Source_File, Pos, Line, Off);
            end if;

            WR (" at");
            WR (Natural'Image (Line));
            WR ("(");
            WR (Source_Ptr'Image (Pos));
            WR (") +");
            WR (Natural'Image (Off));
            WR (" on");
            WR (Date_Type'Image (Get_Date (Design_Unit)));
            case Get_Date (Design_Unit) is
               when Date_Valid
                 | Date_Obsolete
                 | Date_Analyzed
                 | Date_Parsed =>
                  null;
               when others =>
                  raise Internal_Error;
            end case;
            if Get_Kind (Library_Unit) = Iir_Kind_Package_Declaration
              and then Get_Need_Body (Library_Unit)
            then
               WR (" body");
            end if;
            WR (";");
            WR_LF;

            Design_Unit := Get_Chain (Design_Unit);
         end loop;
         << Continue >> null;
         Design_File := Get_Chain (Design_File);
      end loop;

      declare
         Fclose_Res : int;
         pragma Unreferenced (Fclose_Res);
      begin
         Fclose_Res := fclose (Stream);
      end;

      --  Rename the temporary file to the library file.
      --  FIXME: It may fail if they aren't on the same filesystem, but we
      --  could assume it doesn't happen (humm...)
      declare
         File_Name: constant String := Image (Work_Directory)
           & Library_To_File_Name (Library) & ASCII.NUL;
         Delete_Success : Boolean;
      begin
         --  For windows: renames doesn't overwrite destination; so first
         --  delete it. This can create races condition on Unix: if the
         --  program is killed between delete and rename, the library is lost.
         Delete_File (File_Name'Address, Delete_Success);
         Rename_File (Temp_Name'Address, File_Name'Address, Success);
         if not Success then
            --  Renaming may fail if the new filename is in a non-existant
            --  directory.
            Error_Lib_Msg
              ("cannot update library file """
                 & File_Name (File_Name'First .. File_Name'Last - 1)
                 & """");
            Delete_File (Temp_Name'Address, Success);
            raise Option_Error;
         end if;
      end;
   end Save_Library;

   -- Save the map of the work library.
   procedure Save_Work_Library is
   begin
      Save_Library (Work_Library);
   end Save_Work_Library;

   -- Return the name of the latest architecture analysed for an entity.
   function Get_Latest_Architecture (Entity: Iir_Entity_Declaration)
                                    return Iir_Architecture_Body
   is
      Entity_Id : Name_Id;
      Lib : Iir_Library_Declaration;
      Design_File: Iir_Design_File;
      Design_Unit: Iir_Design_Unit;
      Library_Unit: Iir;
      Res: Iir_Design_Unit;
   begin
      --  FIXME: use hash
      Entity_Id := Get_Identifier (Entity);
      Lib := Get_Library (Get_Design_File (Get_Design_Unit (Entity)));
      Design_File := Get_Design_File_Chain (Lib);
      Res := Null_Iir;
      while Design_File /= Null_Iir loop
         Design_Unit := Get_First_Design_Unit (Design_File);
         while Design_Unit /= Null_Iir loop
            if Get_Kind (Design_Unit) = Iir_Kind_Design_Unit then
               Library_Unit := Get_Library_Unit (Design_Unit);

               if Get_Kind (Library_Unit) = Iir_Kind_Architecture_Body
                 and then (Get_Entity_Identifier_Of_Architecture (Library_Unit)
                             = Entity_Id)
               then
                  if Res = Null_Iir then
                     Res := Design_Unit;
                  elsif Get_Date (Design_Unit) > Get_Date (Res) then
                     Res := Design_Unit;
                  end if;
               end if;
            end if;
            Design_Unit := Get_Chain (Design_Unit);
         end loop;
         Design_File := Get_Chain (Design_File);
      end loop;
      if Res = Null_Iir then
         return Null_Iir;
      else
         return Get_Library_Unit (Res);
      end if;
   end Get_Latest_Architecture;

   --  Return the declaration of primary unit NAME of LIBRARY.
   function Find_Primary_Unit
     (Library: Iir_Library_Declaration; Name: Name_Id) return Iir_Design_Unit