| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S W I T C H -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- $Revision: 1.17 $ -- |
| -- -- |
| -- Copyright (C) 1992-2001 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- -- |
| -- 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. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package scans switches. Note that the body of Usage must be |
| -- coordinated with the switches that are recognized by this package. |
| -- The Usage package also acts as the official documentation for the |
| -- switches that are recognized. In addition, package Debug documents |
| -- the otherwise undocumented debug switches that are also recognized. |
| |
| package Switch is |
| |
| -- Note: The default switch character is indicated by Switch_Character, |
| -- but regardless of what it is, a hyphen is always allowed as an |
| -- (alternative) switch character. |
| |
| -- Note: In GNAT, the case of switches is not significant if |
| -- Switches_Case_Sensitive is False. If this is the case, switch |
| -- characters, or letters appearing in the parameter to a switch, may be |
| -- either upper case or lower case. |
| |
| ----------------- |
| -- Subprograms -- |
| ----------------- |
| |
| function Is_Switch (Switch_Chars : String) return Boolean; |
| -- Returns True iff Switch_Chars is at least two characters long, |
| -- and the first character indicates it is a switch. |
| |
| function Is_Front_End_Switch (Switch_Chars : String) return Boolean; |
| -- Returns True iff Switch_Chars represents a front-end switch, |
| -- ie. it starts with -I or -gnat. |
| |
| procedure Scan_Front_End_Switches (Switch_Chars : String); |
| procedure Scan_Binder_Switches (Switch_Chars : String); |
| procedure Scan_Make_Switches (Switch_Chars : String); |
| -- Procedures to scan out switches stored in the given string. The first |
| -- character is known to be a valid switch character, and there are no |
| -- blanks or other switch terminator characters in the string, so the |
| -- entire string should consist of valid switch characters, except that |
| -- an optional terminating NUL character is allowed. A bad switch causes |
| -- a fatal error exit and control does not return. The call also sets |
| -- Usage_Requested to True if a ? switch is encountered. |
| |
| end Switch; |