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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- S W I T C H - C --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 2001-2019, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 -- This package scans front end switches. Note that the body of Usage must be
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27 -- be coordinated with the switches that are recognized by this package.
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28
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29 -- The Usage package also acts as the official documentation for the switches
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30 -- that are recognized. In addition, package Debug documents the otherwise
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31 -- undocumented debug switches that are also recognized.
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32
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33 with System.Strings; use System.Strings;
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34
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35 package Switch.C is
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36
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37 procedure Scan_Front_End_Switches
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38 (Switch_Chars : String;
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39 Args : String_List;
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40 Arg_Rank : Positive);
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41 -- Procedures to scan out front end switches stored in the given string.
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42 -- The first character is known to be a valid switch character, and there
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43 -- are no blanks or other switch terminator characters in the string, so
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44 -- the entire string should consist of valid switch characters, except that
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45 -- an optional terminating NUL character is allowed. A bad switch causes
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46 -- a fatal error exit and control does not return. The call also sets
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47 -- Usage_Requested to True if a switch -gnath is encountered.
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48 --
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49 -- Args is the full list of command line arguments. Arg_Rank is the
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50 -- position of the switch in Args. It is used for certain switches -gnatx
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51 -- to check if a subsequent switch -gnat-x cancels the switch -gnatx.
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52
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53 end Switch.C;
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