File : switch-c.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S W I T C H - C --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2001-2010, 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 package scans front end switches. Note that the body of Usage must be
27 -- be coordinated with the switches that are recognized by this package.
28
29 -- The Usage package also acts as the official documentation for the switches
30 -- that are recognized. In addition, package Debug documents the otherwise
31 -- undocumented debug switches that are also recognized.
32
33 with System.Strings; use System.Strings;
34
35 package Switch.C is
36
37 procedure Scan_Front_End_Switches
38 (Switch_Chars : String;
39 Args : String_List;
40 Arg_Rank : Positive);
41 -- Procedures to scan out front end switches stored in the given string.
42 -- The first character is known to be a valid switch character, and there
43 -- are no blanks or other switch terminator characters in the string, so
44 -- the entire string should consist of valid switch characters, except that
45 -- an optional terminating NUL character is allowed. A bad switch causes
46 -- a fatal error exit and control does not return. The call also sets
47 -- Usage_Requested to True if a switch -gnath is encountered.
48 --
49 -- Args is the full list of command line arguments. Arg_Rank is the
50 -- position of the switch in Args. It is used for certain switches -gnatx
51 -- to check if a subsequent switch -gnat-x cancels the switch -gnatx.
52
53 end Switch.C;