ocarina-backends-po_hi_c-runtime.adb 8.65 KB
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------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--     O C A R I N A . B A C K E N D S . P O _ H I _ C . R U N T I M E      --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
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--    Copyright (C) 2008-2009 Telecom ParisTech, 2010-2014 ESA & ISAE.      --
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--                                                                          --
-- Ocarina  is free software;  you  can  redistribute  it and/or  modify    --
-- it under terms of the GNU General Public License as published by the     --
-- Free Software Foundation; either version 2, or (at your option) any      --
-- later version. Ocarina 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 distributed with Ocarina; see file COPYING.   --
-- If not, write to the Free Software Foundation, 51 Franklin Street, Fifth --
-- Floor, Boston, MA 02111-1301, USA.                                       --
--                                                                          --
-- 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.                                       --
--                                                                          --
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--                 Ocarina is maintained by the TASTE project               --
--                      (taste-users@lists.tuxfamily.org)                   --
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--                                                                          --
------------------------------------------------------------------------------

with GNAT.OS_Lib; use GNAT.OS_Lib;
with GNAT.Case_Util;

with Utils; use Utils;

with Charset; use Charset;
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with Ocarina.Namet;   use Ocarina.Namet;
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with Ocarina.Backends.C_Tree.Nodes;
with Ocarina.Backends.C_Tree.Nutils;

package body Ocarina.Backends.PO_HI_C.Runtime is

   use Ocarina.Backends.C_Tree.Nodes;
   use Ocarina.Backends.C_Tree.Nutils;

   Initialized : Boolean := False;

   RED : array (RE_Id) of Node_Id := (RE_Id'Range => No_Node);
   RHD : array (RH_Id) of Node_Id := (RH_Id'Range => No_Node);

   --  Arrays of run-time entity and unit designators

   type Casing_Rule is record
      Size : Natural;
      From : String_Access;
      Into : String_Access;
   end record;

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   Rules      : array (1 .. 64) of Casing_Rule;
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   Rules_Last : Natural := 0;

   procedure Apply_Casing_Rules (S : in out String);
   --  Apply the registered casing rules on the string S

   procedure Register_Casing_Rule (S : String);
   --  Register a custom casing rule

   ------------------------
   -- Apply_Casing_Rules --
   ------------------------

   procedure Apply_Casing_Rules (S : in out String) is
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      New_Word : Boolean         := True;
      Length   : Natural         := S'Length;
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      S1       : constant String := To_Lower (S);
   begin
      GNAT.Case_Util.To_Mixed (S);

      for I in S'Range loop
         if New_Word then
            New_Word := False;
            for J in 1 .. Rules_Last loop
               if Rules (J).Size <= Length
                 and then S1 (I .. I + Rules (J).Size - 1) = Rules (J).From.all
               then
                  S (I .. I + Rules (J).Size - 1) := Rules (J).Into.all;
               end if;
            end loop;
         end if;
         if S (I) = '_' then
            New_Word := True;
            for J in 1 .. Rules_Last loop
               if Rules (J).Size <= Length
                 and then S1 (I .. I + Rules (J).Size - 1) = Rules (J).From.all
               then
                  S (I .. I + Rules (J).Size - 1) := Rules (J).Into.all;
               end if;
            end loop;
         end if;
         Length := Length - 1;
      end loop;
   end Apply_Casing_Rules;

   ----------------
   -- Initialize --
   ----------------

   procedure Initialize is
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      Name : Name_Id;
      N    : Node_Id;
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   begin
      --  Initialize the runtime only once

      if Initialized then
         return;
      end if;

      Initialized := True;

      Register_Casing_Rule ("AADL");
      Register_Casing_Rule ("char_array");
      Register_Casing_Rule ("nul");

      for E in RF_Id loop
         Set_Str_To_Name_Buffer (RE_Id'Image (E));
         Set_Str_To_Name_Buffer ("__po_hi_" & Name_Buffer (4 .. Name_Len));

         Apply_Casing_Rules (Name_Buffer (1 .. Name_Len));

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         while Name_Buffer (Name_Len) = '_' loop
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            Name_Len := Name_Len - 1;
         end loop;

         Name := Name_Find;

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         Name    := Utils.To_Lower (Name);
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         RED (E) := New_Node (K_Defining_Identifier);
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         Set_Name (RED (E), Name);
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      end loop;

      for E in RH_Id loop
         Set_Str_To_Name_Buffer (RH_Id'Image (E));
         Set_Str_To_Name_Buffer (Name_Buffer (4 .. Name_Len));
         Apply_Casing_Rules (Name_Buffer (1 .. Name_Len));

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         while Name_Buffer (Name_Len) = '_' loop
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            Name_Len := Name_Len - 1;
         end loop;

         Name := Name_Find;

         Name := Utils.To_Lower (Name);
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         N    := New_Node (K_Defining_Identifier);
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         Set_Name (N, Name);

         RHD (E) := Make_Include_Clause (N, False);
      end loop;

      for E in RC_Id loop
         Set_Str_To_Name_Buffer (RC_Id'Image (E));
         Set_Str_To_Name_Buffer ("__po_hi_" & Name_Buffer (4 .. Name_Len));
         Apply_Casing_Rules (Name_Buffer (1 .. Name_Len));

         while Name_Buffer (Name_Len) in '0' .. '9'
           or else Name_Buffer (Name_Len) = '_'
         loop
            Name_Len := Name_Len - 1;
         end loop;

         Name := Name_Find;

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         Name    := To_Upper (Name);
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         RED (E) := New_Node (K_Defining_Identifier);
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         Set_Name (RED (E), Name);
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      end loop;

      for E in RT_Id loop
         Set_Str_To_Name_Buffer (RT_Id'Image (E));
         Set_Str_To_Name_Buffer ("__po_hi_" & Name_Buffer (4 .. Name_Len));
         Apply_Casing_Rules (Name_Buffer (1 .. Name_Len));

         while Name_Buffer (Name_Len) in '0' .. '9'
           or else Name_Buffer (Name_Len) = '_'
         loop
            Name_Len := Name_Len - 1;
         end loop;

         Name := Name_Find;

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         Name    := To_Lower (Name);
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         RED (E) := New_Node (K_Defining_Identifier);
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         Set_Name (RED (E), Name);
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      end loop;

      for E in RV_Id loop
         Set_Str_To_Name_Buffer (RV_Id'Image (E));
         Set_Str_To_Name_Buffer ("__po_hi_" & Name_Buffer (4 .. Name_Len));
         Apply_Casing_Rules (Name_Buffer (1 .. Name_Len));

         while Name_Buffer (Name_Len) in '0' .. '9'
           or else Name_Buffer (Name_Len) = '_'
         loop
            Name_Len := Name_Len - 1;
         end loop;

         Name := Name_Find;

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         Name    := To_Lower (Name);
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         RED (E) := New_Node (K_Defining_Identifier);
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         Set_Name (RED (E), Name);
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      end loop;
   end Initialize;

   -----------
   -- Reset --
   -----------

   procedure Reset is
   begin
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      RED        := (RE_Id'Range => No_Node);
      RHD        := (RH_Id'Range => No_Node);
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      Rules_Last := 0;

      Initialized := False;
   end Reset;

   --------
   -- RE --
   --------

   function RE (Id : RE_Id) return Node_Id is
   begin
      if RE_Header_Table (Id) /= RH_Null then
         Add_Include (RH (RE_Header_Table (Id)));
      end if;
      return Copy_Node (RED (Id));
   end RE;

   --------
   -- RH --
   --------

   function RH (Id : RH_Id) return Node_Id is
   begin
      return Copy_Node (RHD (Id));
   end RH;

   --------------------------
   -- Register_Casing_Rule --
   --------------------------

   procedure Register_Casing_Rule (S : String) is
   begin
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      Rules_Last              := Rules_Last + 1;
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      Rules (Rules_Last).Size := S'Length;
      Rules (Rules_Last).Into := new String'(S);
      Rules (Rules_Last).From := new String'(S);
      To_Lower (Rules (Rules_Last).From.all);
   end Register_Casing_Rule;

end Ocarina.Backends.PO_HI_C.Runtime;