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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              B I N D E R R                               --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2008, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 GNAT; see file COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

with Butil;  use Butil;
with Opt;    use Opt;
with Output; use Output;

package body Binderr is

   ---------------
   -- Error_Msg --
   ---------------

   procedure Error_Msg (Msg : String) is
   begin
      if Msg (Msg'First) = '?' then
         if Warning_Mode = Suppress then
            return;
         end if;

         if Warning_Mode = Treat_As_Error then
            Errors_Detected := Errors_Detected + 1;
         else
            Warnings_Detected := Warnings_Detected + 1;
         end if;

      else
         Errors_Detected := Errors_Detected + 1;
      end if;

      if Brief_Output or else (not Verbose_Mode) then
         Set_Standard_Error;
         Error_Msg_Output (Msg, Info => False);
         Set_Standard_Output;
      end if;

      if Verbose_Mode then
         if Errors_Detected + Warnings_Detected = 0 then
            Write_Eol;
         end if;

         Error_Msg_Output (Msg, Info => False);
      end if;

      --  If too many warnings print message and then turn off warnings

      if Warnings_Detected = Maximum_Messages then
         Set_Standard_Error;
         Write_Line ("maximum number of warnings reached");
         Write_Line ("further warnings will be suppressed");
         Set_Standard_Output;
         Warning_Mode := Suppress;
      end if;

      --  If too many errors print message and give fatal error

      if Errors_Detected = Maximum_Messages then
         Set_Standard_Error;
         Write_Line ("fatal error: maximum number of errors exceeded");
         Set_Standard_Output;
         raise Unrecoverable_Error;
      end if;
   end Error_Msg;

   --------------------
   -- Error_Msg_Info --
   --------------------

   procedure Error_Msg_Info (Msg : String) is
   begin
      if Brief_Output or else (not Verbose_Mode) then
         Set_Standard_Error;
         Error_Msg_Output (Msg, Info => True);
         Set_Standard_Output;
      end if;

      if Verbose_Mode then
         Error_Msg_Output (Msg, Info => True);
      end if;

   end Error_Msg_Info;

   ----------------------
   -- Error_Msg_Output --
   ----------------------

   procedure Error_Msg_Output (Msg : String; Info : Boolean) is
      Use_Second_File : Boolean := False;
      Use_Second_Unit : Boolean := False;
      Use_Second_Nat  : Boolean := False;
      Warning         : Boolean := False;

   begin
      if Warnings_Detected + Errors_Detected > Maximum_Messages then
         Write_Str ("error: maximum errors exceeded");
         Write_Eol;
         return;
      end if;

      --  First, check for warnings

      for J in Msg'Range loop
         if Msg (J) = '?' then
            Warning := True;
            exit;
         end if;
      end loop;

      if Warning then
         Write_Str ("warning: ");
      elsif Info then
         if not Info_Prefix_Suppress then
            Write_Str ("info:  ");
         end if;
      else
         Write_Str ("error: ");
      end if;

      for J in Msg'Range loop
         if Msg (J) = '%' then
            Get_Name_String (Error_Msg_Name_1);
            Write_Char ('"');
            Write_Str (Name_Buffer (1 .. Name_Len));
            Write_Char ('"');

         elsif Msg (J) = '{' then
            if Use_Second_File then
               Get_Name_String (Error_Msg_File_2);
            else
               Use_Second_File := True;
               Get_Name_String (Error_Msg_File_1);
            end if;

            Write_Char ('"');
            Write_Str (Name_Buffer (1 .. Name_Len));
            Write_Char ('"');

         elsif Msg (J) = '$' then
            Write_Char ('"');

            if Use_Second_Unit then
               Write_Unit_Name (Error_Msg_Unit_2);
            else
               Use_Second_Unit := True;
               Write_Unit_Name (Error_Msg_Unit_1);
            end if;

            Write_Char ('"');

         elsif Msg (J) = '#' then
            if Use_Second_Nat then
               Write_Int (Error_Msg_Nat_2);
            else
               Use_Second_Nat := True;
               Write_Int (Error_Msg_Nat_1);
            end if;

         elsif Msg (J) /= '?' then
            Write_Char (Msg (J));
         end if;
      end loop;

      Write_Eol;
   end Error_Msg_Output;

   ----------------------
   -- Finalize_Binderr --
   ----------------------

   procedure Finalize_Binderr is
   begin
      --  Message giving number of errors detected (verbose mode only)

      if Verbose_Mode then
         Write_Eol;

         if Errors_Detected = 0 then
            Write_Str ("No errors");

         elsif Errors_Detected = 1 then
            Write_Str ("1 error");

         else
            Write_Int (Errors_Detected);
            Write_Str (" errors");
         end if;

         if Warnings_Detected = 1 then
            Write_Str (", 1 warning");

         elsif Warnings_Detected > 1 then
            Write_Str (", ");
            Write_Int (Warnings_Detected);
            Write_Str (" warnings");
         end if;

         Write_Eol;
      end if;
   end Finalize_Binderr;

   ------------------------
   -- Initialize_Binderr --
   ------------------------

   procedure Initialize_Binderr is
   begin
      Errors_Detected := 0;
      Warnings_Detected := 0;
   end Initialize_Binderr;

end Binderr;