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) 1999-2012, 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, modified by use of
  48    --  -gnatw.s/.S, but not set by -gnatwa.
  49
  50    Warn_On_Standard_Redefinition : Boolean := False;
  51    --  Warn when a program defines an identifier that matches a name in
  52    --  Standard. Off by default, modified by use of -gnatw.k/.K, but not
  53    --  affected by -gnatwa.
  54
  55    -----------------
  56    -- Subprograms --
  57    -----------------
  58
  59    function Set_Warning_Switch (C : Character) return Boolean;
  60    --  This function sets the warning switch or switches corresponding to the
  61    --  given character. It is used to process a -gnatw switch on the command
  62    --  line, or a character in a string literal in pragma Warnings. Returns
  63    --  True for valid warning character C, False for invalid character.
  64
  65    function Set_Dot_Warning_Switch (C : Character) return Boolean;
  66    --  This function sets the warning switch or switches corresponding to the
  67    --  given character preceded by a dot. Used to process a -gnatw. switch on
  68    --  the command line or .C in a string literal in pragma Warnings. Returns
  69    --  True for valid warning character C, False for invalid character.
  70
  71    procedure Set_GNAT_Mode_Warnings;
  72    --  This is called in -gnatg mode to set the warnings for gnat mode. It is
  73    --  also used to set the proper warning statuses for -gnatw.g. Note that
  74    --  this set of warnings is disjoint from -gnatwa, it enables warnings that
  75    --  are not included in -gnatwa, and it disables warnings that are included
  76    --  in -gnatwa (such as Warn_On_Implementation_Units, which we clearly want
  77    --  to be False for units built with -gnatg).
  78
  79 end Warnsw;