1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                             S I N P U T . P                              --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2010, 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 3,  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 COPYING3.  If not, go to --
19-- http://www.gnu.org/licenses for a complete copy of the license.          --
20--                                                                          --
21-- GNAT was originally developed  by the GNAT team at  New York University. --
22-- Extensive contributions were provided by Ada Core Technologies Inc.      --
23--                                                                          --
24------------------------------------------------------------------------------
25
26--  This child package contains the routines used to actually load a project
27--  file and create entries in the source file table. It also contains two
28--  routines to save and restore a project scan context.
29
30with Scans; use Scans;
31
32package Sinput.P is
33
34   procedure Clear_Source_File_Table;
35   --  This procedure frees memory allocated in the Source_File table (in the
36   --  private part of package Sinput). It should only be used when it is
37   --  guaranteed that all source files that have been loaded so far will not
38   --  be accessed before being reloaded. It is intended for tools that parse
39   --  several times sources, to avoid memory leaks.
40
41   function Load_Project_File (Path : String) return Source_File_Index;
42   --  Load the source of a project source file into memory and initialize the
43   --  Scans state.
44
45   procedure Reset_First;
46   --  Indicate that the next project loaded should be considered as the first
47   --  one, so that Sinput.Main_Source_File is set for this project file. This
48   --  is to get the correct number of lines when error finalization is called.
49
50   function Source_File_Is_Subunit (X : Source_File_Index) return Boolean;
51   --  This function determines if a source file represents a subunit. It works
52   --  by scanning for the first compilation unit token, and returning True if
53   --  it is the token SEPARATE. It will return False otherwise, meaning that
54   --  the file cannot possibly be a legal subunit. This function does NOT do a
55   --  complete parse of the file, or build a tree. It is used in gnatmake and
56   --  gprbuild to decide if a body without a spec in a project file needs to
57   --  be compiled or not. Returns False if X = No_Source_File.
58
59   type Saved_Project_Scan_State is limited private;
60   --  Used to save project scan state in following two routines
61
62   procedure Save_Project_Scan_State
63     (Saved_State : out Saved_Project_Scan_State);
64   pragma Inline (Save_Project_Scan_State);
65   --  Save the Scans state, as well as the values of Source and
66   --  Current_Source_File.
67
68   procedure Restore_Project_Scan_State
69     (Saved_State : Saved_Project_Scan_State);
70   pragma Inline (Restore_Project_Scan_State);
71   --  Restore the Scans state and the values of Source and
72   --  Current_Source_File.
73
74private
75
76   type Saved_Project_Scan_State is record
77      Scan_State          : Saved_Scan_State;
78      Source              : Source_Buffer_Ptr;
79      Current_Source_File : Source_File_Index;
80   end record;
81
82end Sinput.P;
83