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* gcc-interface/gigi.h (gnat_mark_addressable): Rename parameter.
[pf3gnuchains/gcc-fork.git] / gcc / ada / par-prag.adb
index 927664a..9b5b0ab 100644 (file)
@@ -6,18 +6,17 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2002 Free Software Foundation, Inc.          --
+--          Copyright (C) 1992-2009, 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 2,  or (at your option) any later ver- --
+-- 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 COPYING.  If not, write --
--- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
--- MA 02111-1307, USA.                                                      --
+-- 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 Fname.UF; use Fname.UF;
 with Osint;    use Osint;
+with Rident;   use Rident;
+with Restrict; use Restrict;
 with Stringt;  use Stringt;
 with Stylesw;  use Stylesw;
 with Uintp;    use Uintp;
 with Uname;    use Uname;
 
+with System.WCh_Con; use System.WCh_Con;
+
 separate (Par)
 
 function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
-   Pragma_Name : constant Name_Id    := Chars (Pragma_Node);
+   Prag_Name   : constant Name_Id    := Pragma_Name (Pragma_Node);
+   Prag_Id     : constant Pragma_Id  := Get_Pragma_Id (Prag_Name);
    Pragma_Sloc : constant Source_Ptr := Sloc (Pragma_Node);
    Arg_Count   : Nat;
    Arg_Node    : Node_Id;
@@ -70,8 +74,8 @@ function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
    --  an error message and raise Error_Resync.
 
    procedure Check_No_Identifier (Arg : Node_Id);
-   --  Checks that the given argument does not have an identifier. If an
-   --  identifier is present, then an error message is issued, and
+   --  Checks that the given argument does not have an identifier. If
+   --  an identifier is present, then an error message is issued, and
    --  Error_Resync is raised.
 
    procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
@@ -83,6 +87,14 @@ function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
    --  Same as Check_Optional_Identifier, except that the name is required
    --  to be present and to match the given Id value.
 
+   procedure Process_Restrictions_Or_Restriction_Warnings;
+   --  Common processing for Restrictions and Restriction_Warnings pragmas.
+   --  This routine only processes the case of No_Obsolescent_Features,
+   --  which is the only restriction that has syntactic effects. No general
+   --  error checking is done, since this will be done in Sem_Prag. The
+   --  other case processed is pragma Restrictions No_Dependence, since
+   --  otherwise this is done too late.
+
    ----------
    -- Arg1 --
    ----------
@@ -196,18 +208,50 @@ function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
       end if;
    end Check_Required_Identifier;
 
-   ----------
-   -- Prag --
-   ----------
+   --------------------------------------------------
+   -- Process_Restrictions_Or_Restriction_Warnings --
+   --------------------------------------------------
+
+   procedure Process_Restrictions_Or_Restriction_Warnings is
+      Arg  : Node_Id;
+      Id   : Name_Id;
+      Expr : Node_Id;
+
+   begin
+      Arg := Arg1;
+      while Present (Arg) loop
+         Id := Chars (Arg);
+         Expr := Expression (Arg);
+
+         if Id = No_Name
+           and then Nkind (Expr) = N_Identifier
+           and then Get_Restriction_Id (Chars (Expr)) = No_Obsolescent_Features
+         then
+            Set_Restriction (No_Obsolescent_Features, Pragma_Node);
+            Restriction_Warnings (No_Obsolescent_Features) :=
+              Prag_Id = Pragma_Restriction_Warnings;
+
+         elsif Id = Name_No_Dependence then
+            Set_Restriction_No_Dependence
+              (Unit => Expr,
+               Warn => Prag_Id = Pragma_Restriction_Warnings
+                         or else Treat_Restrictions_As_Warnings);
+         end if;
+
+         Next (Arg);
+      end loop;
+   end Process_Restrictions_Or_Restriction_Warnings;
+
+--  Start of processing for Prag
 
 begin
-   Error_Msg_Name_1 := Pragma_Name;
+   Error_Msg_Name_1 := Prag_Name;
 
    --  Ignore unrecognized pragma. We let Sem post the warning for this, since
    --  it is a semantic error, not a syntactic one (we have already checked
    --  the syntax for the unrecognized pragma as required by (RM 2.8(11)).
 
-   if not Is_Pragma_Name (Chars (Pragma_Node)) then
+   if Prag_Id = Unknown_Pragma then
       return Pragma_Node;
    end if;
 
@@ -220,7 +264,6 @@ begin
 
    if Present (Pragma_Argument_Associations (Pragma_Node)) then
       Arg_Node := Arg1;
-
       while Arg_Node /= Empty loop
          Arg_Count := Arg_Count + 1;
 
@@ -234,31 +277,46 @@ begin
 
    --  Remaining processing is pragma dependent
 
-   case Get_Pragma_Id (Pragma_Name) is
+   case Prag_Id is
 
       ------------
       -- Ada_83 --
       ------------
 
       --  This pragma must be processed at parse time, since we want to set
-      --  the Ada 83 and Ada 95 switches properly at parse time to recognize
-      --  Ada 83 syntax or Ada 95 syntax as appropriate.
+      --  the Ada version properly at parse time to recognize the appropriate
+      --  Ada version syntax.
 
       when Pragma_Ada_83 =>
-         Ada_83 := True;
-         Ada_95 := False;
+         Ada_Version := Ada_83;
+         Ada_Version_Explicit := Ada_Version;
 
       ------------
       -- Ada_95 --
       ------------
 
       --  This pragma must be processed at parse time, since we want to set
-      --  the Ada 83 and Ada_95 switches properly at parse time to recognize
-      --  Ada 83 syntax or Ada 95 syntax as appropriate.
+      --  the Ada version properly at parse time to recognize the appropriate
+      --  Ada version syntax.
 
       when Pragma_Ada_95 =>
-         Ada_83 := False;
-         Ada_95 := True;
+         Ada_Version := Ada_95;
+         Ada_Version_Explicit := Ada_Version;
+
+      ---------------------
+      -- Ada_05/Ada_2005 --
+      ---------------------
+
+      --  This pragma must be processed at parse time, since we want to set
+      --  the Ada version properly at parse time to recognize the appropriate
+      --  Ada version syntax. However, it is only the zero argument form that
+      --  must be processed at parse time.
+
+      when Pragma_Ada_05 | Pragma_Ada_2005 =>
+         if Arg_Count = 0 then
+            Ada_Version := Ada_05;
+            Ada_Version_Explicit := Ada_05;
+         end if;
 
       -----------
       -- Debug --
@@ -272,27 +330,34 @@ begin
       --  semantically we treat it as a procedure call (which has exactly the
       --  same syntactic form, so that's why we can get away with this!)
 
-      when Pragma_Debug =>
-         Check_Arg_Count (1);
-         Check_No_Identifier (Arg1);
+      when Pragma_Debug => Debug : declare
+         Expr : Node_Id;
 
-         declare
-            Expr : constant Node_Id := New_Copy (Expression (Arg1));
+      begin
+         if Arg_Count = 2 then
+            Check_No_Identifier (Arg1);
+            Check_No_Identifier (Arg2);
+            Expr := New_Copy (Expression (Arg2));
 
-         begin
-            if Nkind (Expr) /= N_Indexed_Component
-              and then Nkind (Expr) /= N_Function_Call
-              and then Nkind (Expr) /= N_Identifier
-              and then Nkind (Expr) /= N_Selected_Component
-            then
-               Error_Msg
-                 ("argument of pragma% is not procedure call", Sloc (Expr));
-               raise Error_Resync;
-            else
-               Set_Debug_Statement
-                 (Pragma_Node, P_Statement_Name (Expr));
-            end if;
-         end;
+         else
+            Check_Arg_Count (1);
+            Check_No_Identifier (Arg1);
+            Expr := New_Copy (Expression (Arg1));
+         end if;
+
+         if Nkind (Expr) /= N_Indexed_Component
+           and then Nkind (Expr) /= N_Function_Call
+           and then Nkind (Expr) /= N_Identifier
+           and then Nkind (Expr) /= N_Selected_Component
+         then
+            Error_Msg
+              ("argument of pragma% is not procedure call", Sloc (Expr));
+            raise Error_Resync;
+         else
+            Set_Debug_Statement
+              (Pragma_Node, P_Statement_Name (Expr));
+         end if;
+      end Debug;
 
       -------------------------------
       -- Extensions_Allowed (GNAT) --
@@ -307,7 +372,12 @@ begin
          Check_Arg_Count (1);
          Check_No_Identifier (Arg1);
          Check_Arg_Is_On_Or_Off (Arg1);
-         Opt.Extensions_Allowed := (Chars (Expression (Arg1)) = Name_On);
+
+         if Chars (Expression (Arg1)) = Name_On then
+            Extensions_Allowed := True;
+         else
+            Extensions_Allowed := False;
+         end if;
 
       ----------------
       -- List (2.8) --
@@ -353,273 +423,371 @@ begin
          List_Pragmas.Increment_Last;
          List_Pragmas.Table (List_Pragmas.Last) := (Page, Semi);
 
-      -----------------------------
-      -- Source_File_Name (GNAT) --
-      -----------------------------
+         ------------------
+         -- Restrictions --
+         ------------------
+
+         --  pragma Restrictions (RESTRICTION {, RESTRICTION});
+
+         --  RESTRICTION ::=
+         --    restriction_IDENTIFIER
+         --  | restriction_parameter_IDENTIFIER => EXPRESSION
+
+         --  We process the case of No_Obsolescent_Features, since this has
+         --  a syntactic effect that we need to detect at parse time (the use
+         --  of replacement characters such as colon for pound sign).
 
-      --  There are five forms of this pragma:
+         when Pragma_Restrictions =>
+            Process_Restrictions_Or_Restriction_Warnings;
 
-      --  pragma Source_File_Name (
+         --------------------------
+         -- Restriction_Warnings --
+         --------------------------
+
+         --  pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
+
+         --  RESTRICTION ::=
+         --    restriction_IDENTIFIER
+         --  | restriction_parameter_IDENTIFIER => EXPRESSION
+
+         --  See above comment for pragma Restrictions
+
+         when Pragma_Restriction_Warnings =>
+            Process_Restrictions_Or_Restriction_Warnings;
+
+      ----------------------------------------------------------
+      -- Source_File_Name and Source_File_Name_Project (GNAT) --
+      ----------------------------------------------------------
+
+      --  These two pragmas have the same syntax and semantics.
+      --  There are five forms of these pragmas:
+
+      --  pragma Source_File_Name[_Project] (
       --    [UNIT_NAME      =>] unit_NAME,
-      --     BODY_FILE_NAME =>  STRING_LITERAL);
+      --     BODY_FILE_NAME =>  STRING_LITERAL
+      --    [, [INDEX =>] INTEGER_LITERAL]);
 
-      --  pragma Source_File_Name (
+      --  pragma Source_File_Name[_Project] (
       --    [UNIT_NAME      =>] unit_NAME,
-      --     SPEC_FILE_NAME =>  STRING_LITERAL);
+      --     SPEC_FILE_NAME =>  STRING_LITERAL
+      --    [, [INDEX =>] INTEGER_LITERAL]);
 
-      --  pragma Source_File_Name (
+      --  pragma Source_File_Name[_Project] (
       --     BODY_FILE_NAME  => STRING_LITERAL
       --  [, DOT_REPLACEMENT => STRING_LITERAL]
       --  [, CASING          => CASING_SPEC]);
 
-      --  pragma Source_File_Name (
+      --  pragma Source_File_Name[_Project] (
       --     SPEC_FILE_NAME  => STRING_LITERAL
       --  [, DOT_REPLACEMENT => STRING_LITERAL]
       --  [, CASING          => CASING_SPEC]);
 
-      --  pragma Source_File_Name (
+      --  pragma Source_File_Name[_Project] (
       --     SUBUNIT_FILE_NAME  => STRING_LITERAL
       --  [, DOT_REPLACEMENT    => STRING_LITERAL]
       --  [, CASING             => CASING_SPEC]);
 
       --  CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
 
+      --  Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
+      --  Source_File_Name (SFN), however their usage is exclusive:
+      --  SFN can only be used when no project file is used, while
+      --  SFNP can only be used when a project file is used.
+
+      --  The Project Manager produces a configuration pragmas file that
+      --  is communicated to the compiler with -gnatec switch. This file
+      --  contains only SFNP pragmas (at least two for the default naming
+      --  scheme. As this configuration pragmas file is always the first
+      --  processed by the compiler, it prevents the use of pragmas SFN in
+      --  other config files when a project file is in use.
+
       --  Note: we process this during parsing, since we need to have the
       --  source file names set well before the semantic analysis starts,
       --  since we load the spec and with'ed packages before analysis.
 
-      when Pragma_Source_File_Name => Source_File_Name : declare
-         Unam  : Unit_Name_Type;
-         Expr1 : Node_Id;
-         Pat   : String_Ptr;
-         Typ   : Character;
-         Dot   : String_Ptr;
-         Cas   : Casing_Type;
-         Nast  : Nat;
+      when Pragma_Source_File_Name | Pragma_Source_File_Name_Project =>
+         Source_File_Name : declare
+            Unam  : Unit_Name_Type;
+            Expr1 : Node_Id;
+            Pat   : String_Ptr;
+            Typ   : Character;
+            Dot   : String_Ptr;
+            Cas   : Casing_Type;
+            Nast  : Nat;
+            Expr  : Node_Id;
+            Index : Nat;
 
-         function Get_Fname (Arg : Node_Id) return Name_Id;
-         --  Process file name from unit name form of pragma
+            function Get_Fname (Arg : Node_Id) return File_Name_Type;
+            --  Process file name from unit name form of pragma
 
-         function Get_String_Argument (Arg : Node_Id) return String_Ptr;
-         --  Process string literal value from argument
+            function Get_String_Argument (Arg : Node_Id) return String_Ptr;
+            --  Process string literal value from argument
 
-         procedure Process_Casing (Arg : Node_Id);
-         --  Process Casing argument of pattern form of pragma
+            procedure Process_Casing (Arg : Node_Id);
+            --  Process Casing argument of pattern form of pragma
 
-         procedure Process_Dot_Replacement (Arg : Node_Id);
-         --  Process Dot_Replacement argument of patterm form of pragma
+            procedure Process_Dot_Replacement (Arg : Node_Id);
+            --  Process Dot_Replacement argument of pattern form of pragma
 
-         ---------------
-         -- Get_Fname --
-         ---------------
+            ---------------
+            -- Get_Fname --
+            ---------------
 
-         function Get_Fname (Arg : Node_Id) return Name_Id is
-         begin
-            String_To_Name_Buffer (Strval (Expression (Arg)));
+            function Get_Fname (Arg : Node_Id) return File_Name_Type is
+            begin
+               String_To_Name_Buffer (Strval (Expression (Arg)));
 
-            for J in 1 .. Name_Len loop
-               if Is_Directory_Separator (Name_Buffer (J)) then
-                  Error_Msg
-                    ("directory separator character not allowed",
-                     Sloc (Expression (Arg)) + Source_Ptr (J));
-               end if;
-            end loop;
+               for J in 1 .. Name_Len loop
+                  if Is_Directory_Separator (Name_Buffer (J)) then
+                     Error_Msg
+                       ("directory separator character not allowed",
+                        Sloc (Expression (Arg)) + Source_Ptr (J));
+                  end if;
+               end loop;
 
-            return Name_Find;
-         end Get_Fname;
+               return Name_Find;
+            end Get_Fname;
 
-         -------------------------
-         -- Get_String_Argument --
-         -------------------------
+            -------------------------
+            -- Get_String_Argument --
+            -------------------------
 
-         function Get_String_Argument (Arg : Node_Id) return String_Ptr is
-            Str : String_Id;
+            function Get_String_Argument (Arg : Node_Id) return String_Ptr is
+               Str : String_Id;
 
-         begin
-            if Nkind (Expression (Arg)) /= N_String_Literal
-              and then
-               Nkind (Expression (Arg)) /= N_Operator_Symbol
-            then
-               Error_Msg_N
-                 ("argument for pragma% must be string literal", Arg);
-               raise Error_Resync;
-            end if;
+            begin
+               if Nkind (Expression (Arg)) /= N_String_Literal
+                 and then
+                  Nkind (Expression (Arg)) /= N_Operator_Symbol
+               then
+                  Error_Msg_N
+                    ("argument for pragma% must be string literal", Arg);
+                  raise Error_Resync;
+               end if;
 
-            Str := Strval (Expression (Arg));
+               Str := Strval (Expression (Arg));
 
-            --  Check string has no wide chars
+               --  Check string has no wide chars
 
-            for J in 1 .. String_Length (Str) loop
-               if Get_String_Char (Str, J) > 255 then
-                  Error_Msg
-                    ("wide character not allowed in pattern for pragma%",
-                     Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
+               for J in 1 .. String_Length (Str) loop
+                  if Get_String_Char (Str, J) > 255 then
+                     Error_Msg
+                       ("wide character not allowed in pattern for pragma%",
+                        Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
+                  end if;
+               end loop;
+
+               --  Acquire string
+
+               String_To_Name_Buffer (Str);
+               return new String'(Name_Buffer (1 .. Name_Len));
+            end Get_String_Argument;
+
+            --------------------
+            -- Process_Casing --
+            --------------------
+
+            procedure Process_Casing (Arg : Node_Id) is
+               Expr : constant Node_Id := Expression (Arg);
+
+            begin
+               Check_Required_Identifier (Arg, Name_Casing);
+
+               if Nkind (Expr) = N_Identifier then
+                  if Chars (Expr) = Name_Lowercase then
+                     Cas := All_Lower_Case;
+                     return;
+                  elsif Chars (Expr) = Name_Uppercase then
+                     Cas := All_Upper_Case;
+                     return;
+                  elsif Chars (Expr) = Name_Mixedcase then
+                     Cas := Mixed_Case;
+                     return;
+                  end if;
                end if;
-            end loop;
 
-            --  Acquire string
+               Error_Msg_N
+                 ("Casing argument for pragma% must be " &
+                  "one of Mixedcase, Lowercase, Uppercase",
+                  Arg);
+            end Process_Casing;
 
-            String_To_Name_Buffer (Str);
-            return new String'(Name_Buffer (1 .. Name_Len));
-         end Get_String_Argument;
+            -----------------------------
+            -- Process_Dot_Replacement --
+            -----------------------------
 
-         --------------------
-         -- Process_Casing --
-         --------------------
+            procedure Process_Dot_Replacement (Arg : Node_Id) is
+            begin
+               Check_Required_Identifier (Arg, Name_Dot_Replacement);
+               Dot := Get_String_Argument (Arg);
+            end Process_Dot_Replacement;
 
-         procedure Process_Casing (Arg : Node_Id) is
-            Expr : constant Node_Id := Expression (Arg);
+         --  Start of processing for Source_File_Name and
+         --  Source_File_Name_Project pragmas.
 
          begin
-            Check_Required_Identifier (Arg, Name_Casing);
-
-            if Nkind (Expr) = N_Identifier then
-               if Chars (Expr) = Name_Lowercase then
-                  Cas := All_Lower_Case;
-                  return;
-               elsif Chars (Expr) = Name_Uppercase then
-                  Cas := All_Upper_Case;
-                  return;
-               elsif Chars (Expr) = Name_Mixedcase then
-                  Cas := Mixed_Case;
-                  return;
-               end if;
-            end if;
-
-            Error_Msg_N
-              ("Casing argument for pragma% must be " &
-               "one of Mixedcase, Lowercase, Uppercase",
-               Arg);
-         end Process_Casing;
-
-         -----------------------------
-         -- Process_Dot_Replacement --
-         -----------------------------
+            if Prag_Id = Pragma_Source_File_Name then
+               if Project_File_In_Use = In_Use then
+                  Error_Msg
+                    ("pragma Source_File_Name cannot be used " &
+                     "with a project file", Pragma_Sloc);
 
-         procedure Process_Dot_Replacement (Arg : Node_Id) is
-         begin
-            Check_Required_Identifier (Arg, Name_Dot_Replacement);
-            Dot := Get_String_Argument (Arg);
-         end Process_Dot_Replacement;
+               else
+                  Project_File_In_Use := Not_In_Use;
+               end if;
 
-      --  Start of processing for Source_File_Name pragma
+            else
+               if Project_File_In_Use = Not_In_Use then
+                  Error_Msg
+                    ("pragma Source_File_Name_Project should only be used " &
+                     "with a project file", Pragma_Sloc);
+               else
+                  Project_File_In_Use := In_Use;
+               end if;
+            end if;
 
-      begin
-         --  We permit from 1 to 3 arguments
+            --  We permit from 1 to 3 arguments
 
-         if Arg_Count not in 1 .. 3 then
-            Check_Arg_Count (1);
-         end if;
+            if Arg_Count not in 1 .. 3 then
+               Check_Arg_Count (1);
+            end if;
 
-         Expr1 := Expression (Arg1);
+            Expr1 := Expression (Arg1);
 
-         --  If first argument is identifier or selected component, then
-         --  we have the specific file case of the Source_File_Name pragma,
-         --  and the first argument is a unit name.
+            --  If first argument is identifier or selected component, then
+            --  we have the specific file case of the Source_File_Name pragma,
+            --  and the first argument is a unit name.
 
-         if Nkind (Expr1) = N_Identifier
-           or else
-             (Nkind (Expr1) = N_Selected_Component
-               and then
-              Nkind (Selector_Name (Expr1)) = N_Identifier)
-         then
             if Nkind (Expr1) = N_Identifier
-              and then Chars (Expr1) = Name_System
+              or else
+                (Nkind (Expr1) = N_Selected_Component
+                  and then
+                 Nkind (Selector_Name (Expr1)) = N_Identifier)
             then
-               Error_Msg_N
-                 ("pragma Source_File_Name may not be used for System", Arg1);
-               return Error;
-            end if;
+               if Nkind (Expr1) = N_Identifier
+                 and then Chars (Expr1) = Name_System
+               then
+                  Error_Msg_N
+                    ("pragma Source_File_Name may not be used for System",
+                     Arg1);
+                  return Error;
+               end if;
 
-            Check_Arg_Count (2);
+               --  Process index argument if present
 
-            Check_Optional_Identifier (Arg1, Name_Unit_Name);
-            Unam := Get_Unit_Name (Expr1);
+               if Arg_Count = 3 then
+                  Expr := Expression (Arg3);
 
-            Check_Arg_Is_String_Literal (Arg2);
+                  if Nkind (Expr) /= N_Integer_Literal
+                    or else not UI_Is_In_Int_Range (Intval (Expr))
+                    or else Intval (Expr) > 999
+                    or else Intval (Expr) <= 0
+                  then
+                     Error_Msg
+                       ("pragma% index must be integer literal" &
+                        " in range 1 .. 999", Sloc (Expr));
+                     raise Error_Resync;
+                  else
+                     Index := UI_To_Int (Intval (Expr));
+                  end if;
 
-            if Chars (Arg2) = Name_Spec_File_Name then
-               Set_File_Name (Get_Spec_Name (Unam), Get_Fname (Arg2));
+               --  No index argument present
 
-            elsif Chars (Arg2) = Name_Body_File_Name then
-               Set_File_Name (Unam, Get_Fname (Arg2));
+               else
+                  Check_Arg_Count (2);
+                  Index := 0;
+               end if;
 
-            else
-               Error_Msg_N ("pragma% argument has incorrect identifier", Arg2);
-               return Pragma_Node;
-            end if;
+               Check_Optional_Identifier (Arg1, Name_Unit_Name);
+               Unam := Get_Unit_Name (Expr1);
 
-         --  If the first argument is not an identifier, then we must have
-         --  the pattern form of the pragma, and the first argument must be
-         --  the pattern string with an appropriate name.
+               Check_Arg_Is_String_Literal (Arg2);
 
-         else
-            if Chars (Arg1) = Name_Spec_File_Name then
-               Typ := 's';
+               if Chars (Arg2) = Name_Spec_File_Name then
+                  Set_File_Name
+                    (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
 
-            elsif Chars (Arg1) = Name_Body_File_Name then
-               Typ := 'b';
+               elsif Chars (Arg2) = Name_Body_File_Name then
+                  Set_File_Name
+                    (Unam, Get_Fname (Arg2), Index);
 
-            elsif Chars (Arg1) = Name_Subunit_File_Name then
-               Typ := 'u';
+               else
+                  Error_Msg_N
+                    ("pragma% argument has incorrect identifier", Arg2);
+                  return Pragma_Node;
+               end if;
 
-            elsif Chars (Arg1) = Name_Unit_Name then
-               Error_Msg_N
-                 ("Unit_Name parameter for pragma% must be an identifier",
-                  Arg1);
-               raise Error_Resync;
+            --  If the first argument is not an identifier, then we must have
+            --  the pattern form of the pragma, and the first argument must be
+            --  the pattern string with an appropriate name.
 
             else
-               Error_Msg_N ("pragma% argument has incorrect identifier", Arg1);
-               raise Error_Resync;
-            end if;
+               if Chars (Arg1) = Name_Spec_File_Name then
+                  Typ := 's';
 
-            Pat := Get_String_Argument (Arg1);
+               elsif Chars (Arg1) = Name_Body_File_Name then
+                  Typ := 'b';
 
-            --  Check pattern has exactly one asterisk
+               elsif Chars (Arg1) = Name_Subunit_File_Name then
+                  Typ := 'u';
 
-            Nast := 0;
-            for J in Pat'Range loop
-               if Pat (J) = '*' then
-                  Nast := Nast + 1;
+               elsif Chars (Arg1) = Name_Unit_Name then
+                  Error_Msg_N
+                    ("Unit_Name parameter for pragma% must be an identifier",
+                     Arg1);
+                  raise Error_Resync;
+
+               else
+                  Error_Msg_N
+                    ("pragma% argument has incorrect identifier", Arg1);
+                  raise Error_Resync;
                end if;
-            end loop;
 
-            if Nast /= 1 then
-               Error_Msg_N
-                 ("file name pattern must have exactly one * character",
-                  Arg2);
-               return Pragma_Node;
-            end if;
+               Pat := Get_String_Argument (Arg1);
 
-            --  Set defaults for Casing and Dot_Separator parameters
+               --  Check pattern has exactly one asterisk
 
-            Cas := All_Lower_Case;
+               Nast := 0;
+               for J in Pat'Range loop
+                  if Pat (J) = '*' then
+                     Nast := Nast + 1;
+                  end if;
+               end loop;
 
-            Dot := new String'(".");
+               if Nast /= 1 then
+                  Error_Msg_N
+                    ("file name pattern must have exactly one * character",
+                     Arg1);
+                  return Pragma_Node;
+               end if;
 
-            --  Process second and third arguments if present
+               --  Set defaults for Casing and Dot_Separator parameters
 
-            if Arg_Count > 1 then
-               if Chars (Arg2) = Name_Casing then
-                  Process_Casing (Arg2);
+               Cas := All_Lower_Case;
+               Dot := new String'(".");
 
-                  if Arg_Count = 3 then
-                     Process_Dot_Replacement (Arg3);
-                  end if;
+               --  Process second and third arguments if present
 
-               else
-                  Process_Dot_Replacement (Arg2);
+               if Arg_Count > 1 then
+                  if Chars (Arg2) = Name_Casing then
+                     Process_Casing (Arg2);
 
-                  if Arg_Count = 3 then
-                     Process_Casing (Arg3);
+                     if Arg_Count = 3 then
+                        Process_Dot_Replacement (Arg3);
+                     end if;
+
+                  else
+                     Process_Dot_Replacement (Arg2);
+
+                     if Arg_Count = 3 then
+                        Process_Casing (Arg3);
+                     end if;
                   end if;
                end if;
-            end if;
 
-            Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
-         end if;
-      end Source_File_Name;
+               Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
+            end if;
+         end Source_File_Name;
 
       -----------------------------
       -- Source_Reference (GNAT) --
@@ -634,7 +802,7 @@ begin
       --  turn off semantic checking anyway if any parse errors are found.
 
       when Pragma_Source_Reference => Source_Reference : declare
-         Fname : Name_Id;
+         Fname : File_Name_Type;
 
       begin
          if Arg_Count /= 1 then
@@ -650,7 +818,7 @@ begin
            and then Num_SRef_Pragmas (Current_Source_File) = 0
            and then Operating_Mode /= Check_Syntax
          then
-            Error_Msg
+            Error_Msg -- CODEFIX
               ("first % pragma must be first line of file", Pragma_Sloc);
             raise Error_Resync;
          end if;
@@ -663,9 +831,8 @@ begin
                  ("file name required for first % pragma in file",
                   Pragma_Sloc);
                raise Error_Resync;
-
             else
-               Fname := No_Name;
+               Fname := No_File;
             end if;
 
          --  File name present
@@ -733,10 +900,10 @@ begin
             A := Expression (Arg1);
 
             if Nkind (A) = N_String_Literal then
-               S   := Strval (A);
+               S := Strval (A);
 
                declare
-                  Slen    : Natural := Natural (String_Length (S));
+                  Slen    : constant Natural := Natural (String_Length (S));
                   Options : String (1 .. Slen);
                   J       : Natural;
                   Ptr     : Natural;
@@ -766,7 +933,7 @@ begin
 
                   if not OK then
                      Error_Msg
-                       ("invalid style check option",
+                       (Style_Msg_Buf (1 .. Style_Msg_Len),
                         Sloc (Expression (Arg1)) + Source_Ptr (Ptr));
                      raise Error_Resync;
                   end if;
@@ -799,25 +966,81 @@ begin
       -- Warnings (GNAT) --
       ---------------------
 
-      --  pragma Warnings (On | Off, [LOCAL_NAME])
+      --  pragma Warnings (On | Off);
+      --  pragma Warnings (On | Off, LOCAL_NAME);
+      --  pragma Warnings (static_string_EXPRESSION);
+      --  pragma Warnings (On | Off, static_string_EXPRESSION);
 
-      --  The one argument case is processed by the parser, since it may
-      --  control parser warnings as well as semantic warnings, and in any
-      --  case we want to be absolutely sure that the range in the warnings
-      --  table is set well before any semantic analysis is performed.
+      --  The one argument ON/OFF case is processed by the parser, since it may
+      --  control parser warnings as well as semantic warnings, and in any case
+      --  we want to be absolutely sure that the range in the warnings table is
+      --  set well before any semantic analysis is performed. Note that we
+      --  ignore this pragma if debug flag -gnatd.i is set.
 
       when Pragma_Warnings =>
-         if Arg_Count = 1 then
+         if Arg_Count = 1 and then not Debug_Flag_Dot_I then
             Check_No_Identifier (Arg1);
-            Check_Arg_Is_On_Or_Off (Arg1);
 
-            if Chars (Expression (Arg1)) = Name_On then
-               Set_Warnings_Mode_On (Pragma_Sloc);
-            else
-               Set_Warnings_Mode_Off (Pragma_Sloc);
-            end if;
+            declare
+               Argx : constant Node_Id := Expression (Arg1);
+            begin
+               if Nkind (Argx) = N_Identifier then
+                  if Chars (Argx) = Name_On then
+                     Set_Warnings_Mode_On (Pragma_Sloc);
+                  elsif Chars (Argx) = Name_Off then
+                     Set_Warnings_Mode_Off (Pragma_Sloc);
+                  end if;
+               end if;
+            end;
          end if;
 
+      -----------------------------
+      -- Wide_Character_Encoding --
+      -----------------------------
+
+      --  pragma Wide_Character_Encoding (IDENTIFIER | CHARACTER_LITERAL);
+
+      --  This is processed by the parser, since the scanner is affected
+
+      when Pragma_Wide_Character_Encoding => Wide_Character_Encoding : declare
+         A : Node_Id;
+
+      begin
+         Check_Arg_Count (1);
+         Check_No_Identifier (Arg1);
+         A := Expression (Arg1);
+
+         if Nkind (A) = N_Identifier then
+            Get_Name_String (Chars (A));
+            Wide_Character_Encoding_Method :=
+              Get_WC_Encoding_Method (Name_Buffer (1 .. Name_Len));
+
+         elsif Nkind (A) = N_Character_Literal then
+            declare
+               R : constant Char_Code :=
+                     Char_Code (UI_To_Int (Char_Literal_Value (A)));
+            begin
+               if In_Character_Range (R) then
+                  Wide_Character_Encoding_Method :=
+                    Get_WC_Encoding_Method (Get_Character (R));
+               else
+                  raise Constraint_Error;
+               end if;
+            end;
+
+         else
+            raise Constraint_Error;
+         end if;
+
+         Upper_Half_Encoding :=
+           Wide_Character_Encoding_Method in
+             WC_Upper_Half_Encoding_Method;
+
+      exception
+         when Constraint_Error =>
+            Error_Msg_N ("invalid argument for pragma%", Arg1);
+      end Wide_Character_Encoding;
+
       -----------------------
       -- All Other Pragmas --
       -----------------------
@@ -825,124 +1048,175 @@ begin
       --  For all other pragmas, checking and processing is handled
       --  entirely in Sem_Prag, and no further checking is done by Par.
 
-      when Pragma_Abort_Defer              |
-           Pragma_AST_Entry                |
-           Pragma_All_Calls_Remote         |
-           Pragma_Annotate                 |
-           Pragma_Assert                   |
-           Pragma_Asynchronous             |
-           Pragma_Atomic                   |
-           Pragma_Atomic_Components        |
-           Pragma_Attach_Handler           |
-           Pragma_Convention_Identifier    |
-           Pragma_CPP_Class                |
-           Pragma_CPP_Constructor          |
-           Pragma_CPP_Virtual              |
-           Pragma_CPP_Vtable               |
-           Pragma_C_Pass_By_Copy           |
-           Pragma_Comment                  |
-           Pragma_Common_Object            |
-           Pragma_Complex_Representation   |
-           Pragma_Component_Alignment      |
-           Pragma_Controlled               |
-           Pragma_Convention               |
-           Pragma_Discard_Names            |
-           Pragma_Eliminate                |
-           Pragma_Elaborate                |
-           Pragma_Elaborate_All            |
-           Pragma_Elaborate_Body           |
-           Pragma_Elaboration_Checks       |
-           Pragma_Export                   |
-           Pragma_Export_Exception         |
-           Pragma_Export_Function          |
-           Pragma_Export_Object            |
-           Pragma_Export_Procedure         |
-           Pragma_Export_Valued_Procedure  |
-           Pragma_Extend_System            |
-           Pragma_External                 |
-           Pragma_External_Name_Casing     |
-           Pragma_Finalize_Storage_Only    |
-           Pragma_Float_Representation     |
-           Pragma_Ident                    |
-           Pragma_Import                   |
-           Pragma_Import_Exception         |
-           Pragma_Import_Function          |
-           Pragma_Import_Object            |
-           Pragma_Import_Procedure         |
-           Pragma_Import_Valued_Procedure  |
-           Pragma_Initialize_Scalars       |
-           Pragma_Inline                   |
-           Pragma_Inline_Always            |
-           Pragma_Inline_Generic           |
-           Pragma_Inspection_Point         |
-           Pragma_Interface                |
-           Pragma_Interface_Name           |
-           Pragma_Interrupt_Handler        |
-           Pragma_Interrupt_Priority       |
-           Pragma_Java_Constructor         |
-           Pragma_Java_Interface           |
-           Pragma_License                  |
-           Pragma_Link_With                |
-           Pragma_Linker_Alias             |
-           Pragma_Linker_Options           |
-           Pragma_Linker_Section           |
-           Pragma_Locking_Policy           |
-           Pragma_Long_Float               |
-           Pragma_Machine_Attribute        |
-           Pragma_Main                     |
-           Pragma_Main_Storage             |
-           Pragma_Memory_Size              |
-           Pragma_No_Return                |
-           Pragma_No_Run_Time              |
-           Pragma_Normalize_Scalars        |
-           Pragma_Optimize                 |
-           Pragma_Pack                     |
-           Pragma_Passive                  |
-           Pragma_Polling                  |
-           Pragma_Preelaborate             |
-           Pragma_Priority                 |
-           Pragma_Propagate_Exceptions     |
-           Pragma_Psect_Object             |
-           Pragma_Pure                     |
-           Pragma_Pure_Function            |
-           Pragma_Queuing_Policy           |
-           Pragma_Remote_Call_Interface    |
-           Pragma_Remote_Types             |
-           Pragma_Restrictions             |
-           Pragma_Restricted_Run_Time      |
-           Pragma_Ravenscar                |
-           Pragma_Reviewable               |
-           Pragma_Share_Generic            |
-           Pragma_Shared                   |
-           Pragma_Shared_Passive           |
-           Pragma_Storage_Size             |
-           Pragma_Storage_Unit             |
-           Pragma_Stream_Convert           |
-           Pragma_Subtitle                 |
-           Pragma_Suppress                 |
-           Pragma_Suppress_All             |
-           Pragma_Suppress_Debug_Info      |
-           Pragma_Suppress_Initialization  |
-           Pragma_System_Name              |
-           Pragma_Task_Dispatching_Policy  |
-           Pragma_Task_Info                |
-           Pragma_Task_Name                |
-           Pragma_Task_Storage             |
-           Pragma_Time_Slice               |
-           Pragma_Title                    |
-           Pragma_Unchecked_Union          |
-           Pragma_Unimplemented_Unit       |
-           Pragma_Universal_Data           |
-           Pragma_Unreferenced             |
-           Pragma_Unreserve_All_Interrupts |
-           Pragma_Unsuppress               |
-           Pragma_Use_VADS_Size            |
-           Pragma_Volatile                 |
-           Pragma_Volatile_Components      |
-           Pragma_Weak_External            |
-           Pragma_Validity_Checks          =>
+      when Pragma_Abort_Defer                   |
+           Pragma_Assertion_Policy              |
+           Pragma_Assume_No_Invalid_Values      |
+           Pragma_AST_Entry                     |
+           Pragma_All_Calls_Remote              |
+           Pragma_Annotate                      |
+           Pragma_Assert                        |
+           Pragma_Asynchronous                  |
+           Pragma_Atomic                        |
+           Pragma_Atomic_Components             |
+           Pragma_Attach_Handler                |
+           Pragma_Check                         |
+           Pragma_Check_Name                    |
+           Pragma_Check_Policy                  |
+           Pragma_CIL_Constructor               |
+           Pragma_Compile_Time_Error            |
+           Pragma_Compile_Time_Warning          |
+           Pragma_Compiler_Unit                 |
+           Pragma_Convention_Identifier         |
+           Pragma_CPP_Class                     |
+           Pragma_CPP_Constructor               |
+           Pragma_CPP_Virtual                   |
+           Pragma_CPP_Vtable                    |
+           Pragma_C_Pass_By_Copy                |
+           Pragma_Comment                       |
+           Pragma_Common_Object                 |
+           Pragma_Complete_Representation       |
+           Pragma_Complex_Representation        |
+           Pragma_Component_Alignment           |
+           Pragma_Controlled                    |
+           Pragma_Convention                    |
+           Pragma_Debug_Policy                  |
+           Pragma_Detect_Blocking               |
+           Pragma_Dimension                     |
+           Pragma_Discard_Names                 |
+           Pragma_Eliminate                     |
+           Pragma_Elaborate                     |
+           Pragma_Elaborate_All                 |
+           Pragma_Elaborate_Body                |
+           Pragma_Elaboration_Checks            |
+           Pragma_Export                        |
+           Pragma_Export_Exception              |
+           Pragma_Export_Function               |
+           Pragma_Export_Object                 |
+           Pragma_Export_Procedure              |
+           Pragma_Export_Value                  |
+           Pragma_Export_Valued_Procedure       |
+           Pragma_Extend_System                 |
+           Pragma_External                      |
+           Pragma_External_Name_Casing          |
+           Pragma_Favor_Top_Level               |
+           Pragma_Fast_Math                     |
+           Pragma_Finalize_Storage_Only         |
+           Pragma_Float_Representation          |
+           Pragma_Ident                         |
+           Pragma_Implemented_By_Entry          |
+           Pragma_Implicit_Packing              |
+           Pragma_Import                        |
+           Pragma_Import_Exception              |
+           Pragma_Import_Function               |
+           Pragma_Import_Object                 |
+           Pragma_Import_Procedure              |
+           Pragma_Import_Valued_Procedure       |
+           Pragma_Initialize_Scalars            |
+           Pragma_Inline                        |
+           Pragma_Inline_Always                 |
+           Pragma_Inline_Generic                |
+           Pragma_Inspection_Point              |
+           Pragma_Interface                     |
+           Pragma_Interface_Name                |
+           Pragma_Interrupt_Handler             |
+           Pragma_Interrupt_State               |
+           Pragma_Interrupt_Priority            |
+           Pragma_Java_Constructor              |
+           Pragma_Java_Interface                |
+           Pragma_Keep_Names                    |
+           Pragma_License                       |
+           Pragma_Link_With                     |
+           Pragma_Linker_Alias                  |
+           Pragma_Linker_Constructor            |
+           Pragma_Linker_Destructor             |
+           Pragma_Linker_Options                |
+           Pragma_Linker_Section                |
+           Pragma_Locking_Policy                |
+           Pragma_Long_Float                    |
+           Pragma_Machine_Attribute             |
+           Pragma_Main                          |
+           Pragma_Main_Storage                  |
+           Pragma_Memory_Size                   |
+           Pragma_No_Body                       |
+           Pragma_No_Return                     |
+           Pragma_Obsolescent                   |
+           Pragma_No_Run_Time                   |
+           Pragma_No_Strict_Aliasing            |
+           Pragma_Normalize_Scalars             |
+           Pragma_Optimize                      |
+           Pragma_Optimize_Alignment            |
+           Pragma_Pack                          |
+           Pragma_Passive                       |
+           Pragma_Preelaborable_Initialization  |
+           Pragma_Polling                       |
+           Pragma_Persistent_BSS                |
+           Pragma_Postcondition                 |
+           Pragma_Precondition                  |
+           Pragma_Preelaborate                  |
+           Pragma_Preelaborate_05               |
+           Pragma_Priority                      |
+           Pragma_Priority_Specific_Dispatching |
+           Pragma_Profile                       |
+           Pragma_Profile_Warnings              |
+           Pragma_Propagate_Exceptions          |
+           Pragma_Psect_Object                  |
+           Pragma_Pure                          |
+           Pragma_Pure_05                       |
+           Pragma_Pure_Function                 |
+           Pragma_Queuing_Policy                |
+           Pragma_Relative_Deadline             |
+           Pragma_Remote_Call_Interface         |
+           Pragma_Remote_Types                  |
+           Pragma_Restricted_Run_Time           |
+           Pragma_Ravenscar                     |
+           Pragma_Reviewable                    |
+           Pragma_Share_Generic                 |
+           Pragma_Shared                        |
+           Pragma_Shared_Passive                |
+           Pragma_Short_Circuit_And_Or          |
+           Pragma_Storage_Size                  |
+           Pragma_Storage_Unit                  |
+           Pragma_Static_Elaboration_Desired    |
+           Pragma_Stream_Convert                |
+           Pragma_Subtitle                      |
+           Pragma_Suppress                      |
+           Pragma_Suppress_All                  |
+           Pragma_Suppress_Debug_Info           |
+           Pragma_Suppress_Exception_Locations  |
+           Pragma_Suppress_Initialization       |
+           Pragma_System_Name                   |
+           Pragma_Task_Dispatching_Policy       |
+           Pragma_Task_Info                     |
+           Pragma_Task_Name                     |
+           Pragma_Task_Storage                  |
+           Pragma_Thread_Local_Storage          |
+           Pragma_Time_Slice                    |
+           Pragma_Title                         |
+           Pragma_Unchecked_Union               |
+           Pragma_Unimplemented_Unit            |
+           Pragma_Universal_Aliasing            |
+           Pragma_Universal_Data                |
+           Pragma_Unmodified                    |
+           Pragma_Unreferenced                  |
+           Pragma_Unreferenced_Objects          |
+           Pragma_Unreserve_All_Interrupts      |
+           Pragma_Unsuppress                    |
+           Pragma_Use_VADS_Size                 |
+           Pragma_Volatile                      |
+           Pragma_Volatile_Components           |
+           Pragma_Weak_External                 |
+           Pragma_Validity_Checks               =>
          null;
 
+      --------------------
+      -- Unknown_Pragma --
+      --------------------
+
+      --  Should be impossible, since we excluded this case earlier on
+
+      when Unknown_Pragma =>
+         raise Program_Error;
+
    end case;
 
    return Pragma_Node;