1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 2001 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- GNAT was originally developed by the GNAT team at New York University. --
25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
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29 -- This package scans front end switches. Note that the body of Usage must be
30 -- coordinated with the switches that are recognized by this package.
31 -- The Usage package also acts as the official documentation for the
32 -- switches that are recognized. In addition, package Debug documents
33 -- the otherwise undocumented debug switches that are also recognized.
37 procedure Scan_Front_End_Switches (Switch_Chars : String);
38 -- Procedures to scan out front end switches stored in the given string.
39 -- The first character is known to be a valid switch character, and there
40 -- are no blanks or other switch terminator characters in the string, so
41 -- the entire string should consist of valid switch characters, except that
42 -- an optional terminating NUL character is allowed. A bad switch causes
43 -- a fatal error exit and control does not return. The call also sets
44 -- Usage_Requested to True if a ? switch is encountered.