gcc/ada/switch-m.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S W I T C H - M                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001-2009, 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 make switches. Note that the body of Usage must be
  27 --  coordinated with the switches that are recognized by this package.
  28 --  The Usage package also acts as the official documentation for the
  29 --  switches that are recognized. In addition, package Debug documents
  30 --  the otherwise undocumented debug switches that are also recognized.
  31
  32 with System.OS_Lib; use System.OS_Lib;
  33 with Prj.Tree;
  34
  35 package Switch.M is
  36
  37    procedure Scan_Make_Switches
  38      (Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
  39       Switch_Chars      : String;
  40       Success           : out Boolean);
  41    --  Scan a gnatmake switch and act accordingly. For switches that are
  42    --  recognized, Success is set to True. A switch that is not recognized and
  43    --  consists of one small letter causes a fatal error exit and control does
  44    --  not return. For all other not recognized switches, Success is set to
  45    --  False, so that the switch may be passed to the compiler.
  46    --
  47    --  Project_Node_Tree is used to store tree-specific parameters like the
  48    --  project path.
  49
  50    procedure Normalize_Compiler_Switches
  51      (Switch_Chars : String;
  52       Switches     : in out Argument_List_Access;
  53       Last         : out Natural);
  54    --  Takes a compiler switch which potentially is equivalent to more
  55    --  that one simple switches and returns the equivalent list of simple
  56    --  switches that are stored in an ALI file. Switches will be extended
  57    --  if initially null or too short. Last indicates the index in Switches
  58    --  of the last simple switch. Last is equal to zero, if it has been
  59    --  determined that Switch_Chars is ill-formed or does not contain any
  60    --  switch that should be stored in an ALI file. Otherwise, the list of
  61    --  simple switches is Switches (Switches'First .. Last).
  62    --
  63    --    Example: if Switch_Chars is equal to "-gnatAwue", then the list of
  64    --    simple switches will have 3 components: -gnatA, -gnatwu, -gnatwe.
  65    --
  66    --  The String_Access components of Switches should not be deallocated:
  67    --  they are shallow copies of components in a table in the body.
  68
  69    function Normalize_Compiler_Switches
  70      (Switch_Chars : String) return Argument_List;
  71    --  Similar to the previous procedure. The return value is the list of
  72    --  simple switches. It may be an empty array if it has been determined
  73    --  that Switch_Chars is ill-formed or does not contain any switch that
  74    --  should be stored in an ALI file. The String_Access components of the
  75    --  returned value should not be deallocated.
  76
  77 end Switch.M;