gcc/ada/opt.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  O P T                                   --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2003, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 with Gnatvsn; use Gnatvsn;
  35 with System;  use System;
  36 with Tree_IO; use Tree_IO;
  37
  38 package body Opt is
  39
  40    Immediate_Errors : Boolean := True;
  41    --  This is an obsolete flag that is no longer present in opt.ads. We
  42    --  retain it here because this flag was written to the tree and there
  43    --  is no point in making trees incomaptible just for the sake of saving
  44    --  one byte of data. The value written is ignored.
  45
  46    ----------------------------------
  47    -- Register_Opt_Config_Switches --
  48    ----------------------------------
  49
  50    procedure Register_Opt_Config_Switches is
  51    begin
  52       Ada_83_Config                         := Ada_83;
  53       Dynamic_Elaboration_Checks_Config     := Dynamic_Elaboration_Checks;
  54       Exception_Locations_Suppressed_Config := Exception_Locations_Suppressed;
  55       Extensions_Allowed_Config             := Extensions_Allowed;
  56       External_Name_Exp_Casing_Config       := External_Name_Exp_Casing;
  57       External_Name_Imp_Casing_Config       := External_Name_Imp_Casing;
  58       Polling_Required_Config               := Polling_Required;
  59       Use_VADS_Size_Config                  := Use_VADS_Size;
  60    end Register_Opt_Config_Switches;
  61
  62    ---------------------------------
  63    -- Restore_Opt_Config_Switches --
  64    ---------------------------------
  65
  66    procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type) is
  67    begin
  68       Ada_83                         := Save.Ada_83;
  69       Ada_95                         := not Ada_83;
  70       Dynamic_Elaboration_Checks     := Save.Dynamic_Elaboration_Checks;
  71       Exception_Locations_Suppressed := Save.Exception_Locations_Suppressed;
  72       Extensions_Allowed             := Save.Extensions_Allowed;
  73       External_Name_Exp_Casing       := Save.External_Name_Exp_Casing;
  74       External_Name_Imp_Casing       := Save.External_Name_Imp_Casing;
  75       Polling_Required               := Save.Polling_Required;
  76       Use_VADS_Size                  := Save.Use_VADS_Size;
  77    end Restore_Opt_Config_Switches;
  78
  79    ------------------------------
  80    -- Save_Opt_Config_Switches --
  81    ------------------------------
  82
  83    procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type) is
  84    begin
  85       Save.Ada_83                         := Ada_83;
  86       Save.Dynamic_Elaboration_Checks     := Dynamic_Elaboration_Checks;
  87       Save.Exception_Locations_Suppressed := Exception_Locations_Suppressed;
  88       Save.Extensions_Allowed             := Extensions_Allowed;
  89       Save.External_Name_Exp_Casing       := External_Name_Exp_Casing;
  90       Save.External_Name_Imp_Casing       := External_Name_Imp_Casing;
  91       Save.Polling_Required               := Polling_Required;
  92       Save.Use_VADS_Size                  := Use_VADS_Size;
  93    end Save_Opt_Config_Switches;
  94
  95    -----------------------------
  96    -- Set_Opt_Config_Switches --
  97    -----------------------------
  98
  99    procedure Set_Opt_Config_Switches (Internal_Unit : Boolean) is
 100    begin
 101       if Internal_Unit then
 102          Ada_83                     := False;
 103          Ada_95                     := True;
 104          Dynamic_Elaboration_Checks := False;
 105          Extensions_Allowed         := True;
 106          External_Name_Exp_Casing   := As_Is;
 107          External_Name_Imp_Casing   := Lowercase;
 108          Use_VADS_Size              := False;
 109
 110       else
 111          Ada_83                     := Ada_83_Config;
 112          Ada_95                     := not Ada_83_Config;
 113          Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks_Config;
 114          Extensions_Allowed         := Extensions_Allowed_Config;
 115          External_Name_Exp_Casing   := External_Name_Exp_Casing_Config;
 116          External_Name_Imp_Casing   := External_Name_Imp_Casing_Config;
 117          Use_VADS_Size              := Use_VADS_Size_Config;
 118       end if;
 119
 120       Exception_Locations_Suppressed := Exception_Locations_Suppressed_Config;
 121       Polling_Required               := Polling_Required_Config;
 122    end Set_Opt_Config_Switches;
 123
 124    ---------------
 125    -- Tree_Read --
 126    ---------------
 127
 128    procedure Tree_Read is
 129       Tree_Version_String_Len : Nat;
 130
 131    begin
 132       Tree_Read_Int  (Tree_ASIS_Version_Number);
 133       Tree_Read_Bool (Brief_Output);
 134       Tree_Read_Bool (GNAT_Mode);
 135       Tree_Read_Char (Identifier_Character_Set);
 136       Tree_Read_Int  (Maximum_File_Name_Length);
 137       Tree_Read_Data (Suppress_Options'Address,
 138                       Suppress_Array'Object_Size / Storage_Unit);
 139       Tree_Read_Bool (Verbose_Mode);
 140       Tree_Read_Data (Warning_Mode'Address,
 141                       Warning_Mode_Type'Object_Size / Storage_Unit);
 142       Tree_Read_Bool (Ada_83_Config);
 143       Tree_Read_Bool (All_Errors_Mode);
 144       Tree_Read_Bool (Assertions_Enabled);
 145       Tree_Read_Bool (Enable_Overflow_Checks);
 146       Tree_Read_Bool (Full_List);
 147
 148       --  Read version string: we have to check the length first
 149
 150       Tree_Read_Int (Tree_Version_String_Len);
 151
 152       if Tree_Version_String_Len = Tree_Version_String'Length then
 153          Tree_Read_Data
 154            (Tree_Version_String'Address, Tree_Version_String_Len);
 155       else
 156          Tree_Version_String := (others => '?');
 157
 158          declare
 159             Tmp : String (1 .. Integer (Tree_Version_String_Len));
 160          begin
 161             Tree_Read_Data
 162               (Tmp'Address, Tree_Version_String_Len);
 163          end;
 164
 165       end if;
 166
 167       Tree_Read_Data (Distribution_Stub_Mode'Address,
 168                       Distribution_Stub_Mode_Type'Object_Size / Storage_Unit);
 169       Tree_Read_Bool (Immediate_Errors);
 170       Tree_Read_Bool (Inline_Active);
 171       Tree_Read_Bool (Inline_Processing_Required);
 172       Tree_Read_Bool (List_Units);
 173       Tree_Read_Bool (Configurable_Run_Time_Mode);
 174       Tree_Read_Data (Operating_Mode'Address,
 175                       Operating_Mode_Type'Object_Size / Storage_Unit);
 176       Tree_Read_Bool (Suppress_Checks);
 177       Tree_Read_Bool (Try_Semantics);
 178       Tree_Read_Data (Wide_Character_Encoding_Method'Address,
 179                       WC_Encoding_Method'Object_Size / Storage_Unit);
 180       Tree_Read_Bool (Upper_Half_Encoding);
 181       Tree_Read_Bool (Force_ALI_Tree_File);
 182    end Tree_Read;
 183
 184    ----------------
 185    -- Tree_Write --
 186    ----------------
 187
 188    procedure Tree_Write is
 189       Version_String : String := Gnat_Version_String;
 190    begin
 191       Tree_Write_Int  (ASIS_Version_Number);
 192       Tree_Write_Bool (Brief_Output);
 193       Tree_Write_Bool (GNAT_Mode);
 194       Tree_Write_Char (Identifier_Character_Set);
 195       Tree_Write_Int  (Maximum_File_Name_Length);
 196       Tree_Write_Data (Suppress_Options'Address,
 197                        Suppress_Array'Object_Size / Storage_Unit);
 198       Tree_Write_Bool (Verbose_Mode);
 199       Tree_Write_Data (Warning_Mode'Address,
 200                        Warning_Mode_Type'Object_Size / Storage_Unit);
 201       Tree_Write_Bool (Ada_83_Config);
 202       Tree_Write_Bool (All_Errors_Mode);
 203       Tree_Write_Bool (Assertions_Enabled);
 204       Tree_Write_Bool (Enable_Overflow_Checks);
 205       Tree_Write_Bool (Full_List);
 206       Tree_Write_Int  (Int (Version_String'Length));
 207       Tree_Write_Data (Version_String'Address,
 208                        Version_String'Length);
 209       Tree_Write_Data (Distribution_Stub_Mode'Address,
 210                        Distribution_Stub_Mode_Type'Object_Size / Storage_Unit);
 211       Tree_Write_Bool (Immediate_Errors);
 212       Tree_Write_Bool (Inline_Active);
 213       Tree_Write_Bool (Inline_Processing_Required);
 214       Tree_Write_Bool (List_Units);
 215       Tree_Write_Bool (Configurable_Run_Time_Mode);
 216       Tree_Write_Data (Operating_Mode'Address,
 217                        Operating_Mode_Type'Object_Size / Storage_Unit);
 218       Tree_Write_Bool (Suppress_Checks);
 219       Tree_Write_Bool (Try_Semantics);
 220       Tree_Write_Data (Wide_Character_Encoding_Method'Address,
 221                        WC_Encoding_Method'Object_Size / Storage_Unit);
 222       Tree_Write_Bool (Upper_Half_Encoding);
 223       Tree_Write_Bool (Force_ALI_Tree_File);
 224    end Tree_Write;
 225
 226 end Opt;