gcc/ada/warnsw.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                               W A R N S W                                --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1999-2011, 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 unit contains the routines used to handle setting of warning options
  27
  28 package Warnsw is
  29
  30    -------------------
  31    -- Warning Flags --
  32    -------------------
  33
  34    --  These flags are activated or deactivated by -gnatw switches and control
  35    --  whether warnings of a given class will be generated or not.
  36
  37    --  Note: most of these flags are still in opt, but the plan is to move them
  38    --  here as time goes by.
  39
  40    Warn_On_Record_Holes : Boolean := False;
  41    --  Warn when explicit record component clauses leave uncovered holes (gaps)
  42    --  in a record layout. Off by default, set by -gnatw.h (but not -gnatwa).
  43
  44    Warn_On_Overridden_Size : Boolean := False;
  45    --  Warn when explicit record component clause or array component_size
  46    --  clause specifies a size that overrides a size for the typen which was
  47    --  set with an explicit size clause. Off by default, set by -gnatw.s (but
  48    --  not -gnatwa).
  49
  50    -----------------
  51    -- Subprograms --
  52    -----------------
  53
  54    function Set_Warning_Switch (C : Character) return Boolean;
  55    --  This function sets the warning switch or switches corresponding to the
  56    --  given character. It is used to process a -gnatw switch on the command
  57    --  line, or a character in a string literal in pragma Warnings. Returns
  58    --  True for valid warning character C, False for invalid character.
  59
  60    function Set_Dot_Warning_Switch (C : Character) return Boolean;
  61    --  This function sets the warning switch or switches corresponding to the
  62    --  given character preceded by a dot. Used to process a -gnatw. switch on
  63    --  the command line or .C in a string literal in pragma Warnings. Returns
  64    --  True for valid warning character C, False for invalid character.
  65
  66    procedure Set_GNAT_Mode_Warnings;
  67    --  This is called in -gnatg mode to set the warnings for gnat mode. It is
  68    --  also used to set the proper warning statuses for -gnatw.g. Note that
  69    --  this set of warnings is disjoint from -gnatwa, it enables warnings that
  70    --  are not included in -gnatwa, and it disables warnings that are included
  71    --  in -gnatwa (such as Warn_On_Implementation_Units, which we clearly want
  72    --  to be False for units built with -gnatg).
  73
  74 end Warnsw;