gcc/ada/sinput-p.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S I N P U T . P                              --
   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 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Prj.Err;
  28 with Sinput.C;
  29
  30 package body Sinput.P is
  31
  32    First : Boolean := True;
  33    --  Flag used when Load_Project_File is called the first time,
  34    --  to set Main_Source_File.
  35    --  The flag is reset to False at the first call to Load_Project_File
  36
  37    -----------------------
  38    -- Load_Project_File --
  39    -----------------------
  40
  41    function Load_Project_File (Path : String) return Source_File_Index is
  42       X    : Source_File_Index;
  43
  44    begin
  45       X := Sinput.C.Load_File (Path);
  46
  47       if First then
  48          Main_Source_File := X;
  49          First := False;
  50       end if;
  51
  52       return X;
  53    end Load_Project_File;
  54
  55    --------------------------------
  56    -- Restore_Project_Scan_State --
  57    --------------------------------
  58
  59    procedure Restore_Project_Scan_State
  60      (Saved_State : in Saved_Project_Scan_State)
  61    is
  62    begin
  63       Restore_Scan_State (Saved_State.Scan_State);
  64       Source              := Saved_State.Source;
  65       Current_Source_File := Saved_State.Current_Source_File;
  66    end Restore_Project_Scan_State;
  67
  68    -----------------------------
  69    -- Save_Project_Scan_State --
  70    -----------------------------
  71
  72    procedure Save_Project_Scan_State
  73      (Saved_State : out Saved_Project_Scan_State)
  74    is
  75    begin
  76       Save_Scan_State (Saved_State.Scan_State);
  77       Saved_State.Source              := Source;
  78       Saved_State.Current_Source_File := Current_Source_File;
  79    end Save_Project_Scan_State;
  80
  81    ----------------------------
  82    -- Source_File_Is_Subunit --
  83    ----------------------------
  84
  85    function Source_File_Is_Subunit (X : Source_File_Index) return Boolean is
  86    begin
  87       Prj.Err.Scanner.Initialize_Scanner (No_Unit, X);
  88
  89       --  We scan past junk to the first interesting compilation unit
  90       --  token, to see if it is SEPARATE. We ignore WITH keywords during
  91       --  this and also PRIVATE. The reason for ignoring PRIVATE is that
  92       --  it handles some error situations, and also it is possible that
  93       --  a PRIVATE WITH feature might be approved some time in the future.
  94
  95       while Token = Tok_With
  96         or else Token = Tok_Private
  97         or else (Token not in Token_Class_Cunit and then Token /= Tok_EOF)
  98       loop
  99          Prj.Err.Scanner.Scan;
 100       end loop;
 101
 102       return Token = Tok_Separate;
 103    end Source_File_Is_Subunit;
 104
 105 end Sinput.P;