gcc/ada/err_vars.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             E R R _ V A R S                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2006, 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 2,  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 COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  This package contains variables common to error reporting packages
  28 --  including Errout and Prj.Err.
  29
  30 with Types; use Types;
  31 with Uintp; use Uintp;
  32
  33 package Err_Vars is
  34
  35    ------------------
  36    -- Error Counts --
  37    ------------------
  38
  39    Serious_Errors_Detected : Nat;
  40    --  This is a count of errors that are serious enough to stop expansion,
  41    --  and hence to prevent generation of an object file even if the
  42    --  switch -gnatQ is set. Initialized to zero at the start of compilation.
  43
  44    Total_Errors_Detected : Nat;
  45    --  Number of errors detected so far. Includes count of serious errors and
  46    --  non-serious errors, so this value is always greater than or equal to the
  47    --  Serious_Errors_Detected value. Initialized to zero at the start of
  48    --  compilation.
  49
  50    Warnings_Detected : Nat;
  51    --  Number of warnings detected. Initialized to zero at the start of
  52    --  compilation.
  53
  54    ----------------------------------
  55    -- Error Message Mode Variables --
  56    ----------------------------------
  57
  58    --  These variables control special error message modes. The initialized
  59    --  values below give the normal default behavior, but they can be reset
  60    --  by the caller to get different behavior as noted in the comments. These
  61    --  variables are not reset by calls to the error message routines, so the
  62    --  caller is responsible for resetting the default behavior after use.
  63
  64    Error_Msg_Qual_Level : Int;
  65    --  Number of levels of qualification required for type name (see the
  66    --  description of the } insertion character. Note that this value does
  67    --  note get reset by any Error_Msg call, so the caller is responsible
  68    --  for resetting it.
  69
  70    Warn_On_Instance : Boolean;
  71    --  Normally if a warning is generated in a generic template from the
  72    --  analysis of the template, then the warning really belongs in the
  73    --  template, and the default value of False for this Boolean achieves
  74    --  that effect. If Warn_On_Instance is set True, then the warnings are
  75    --  generated on the instantiation (referring to the template) rather
  76    --  than on the template itself.
  77
  78    Raise_Exception_On_Error : Nat;
  79    --  If this value is non-zero, then any attempt to generate an error
  80    --  message raises the exception Error_Msg_Exception, and the error
  81    --  message is not output. This is used for defending against junk
  82    --  resulting from illegalities, and also for substitution of more
  83    --  appropriate error messages from higher semantic levels. It is
  84    --  a counter so that the increment/decrement protocol nests neatly.
  85
  86    Error_Msg_Exception : exception;
  87    --  Exception raised if Raise_Exception_On_Error is true
  88
  89    Current_Error_Source_File : Source_File_Index := Internal_Source_File;
  90    --  Id of current messages. Used to post file name when unit changes. This
  91    --  is initialized to Main_Source_File at the start of a compilation, which
  92    --  means that no file names will be output unless there are errors in units
  93    --  other than the main unit. However, if the main unit has a pragma
  94    --  Source_Reference line, then this is initialized to No_Source_File,
  95    --  to force an initial reference to the real source file name.
  96
  97    ----------------------------------------
  98    -- Error Message Insertion Parameters --
  99    ----------------------------------------
 100
 101    --  The error message routines work with strings that contain insertion
 102    --  sequences that result in the insertion of variable data. The following
 103    --  variables contain the required data. The procedure is to set one or more
 104    --  of the following global variables to appropriate values before making a
 105    --  call to one of the error message routines with a string containing the
 106    --  insertion character to get the value inserted in an appropriate format.
 107
 108    Error_Msg_Col : Column_Number;
 109    --  Column for @ insertion character in message
 110
 111    Error_Msg_Uint_1 : Uint;
 112    Error_Msg_Uint_2 : Uint;
 113    --  Uint values for ^ insertion characters in message
 114
 115    Error_Msg_Sloc : Source_Ptr;
 116    --  Source location for # insertion character in message
 117
 118    Error_Msg_Name_1 : Name_Id;
 119    Error_Msg_Name_2 : Name_Id;
 120    Error_Msg_Name_3 : Name_Id;
 121    --  Name_Id values for % insertion characters in message
 122
 123    Error_Msg_Unit_1 : Name_Id;
 124    Error_Msg_Unit_2 : Name_Id;
 125    --  Name_Id values for $ insertion characters in message
 126
 127    Error_Msg_Node_1 : Node_Id;
 128    Error_Msg_Node_2 : Node_Id;
 129    --  Node_Id values for & insertion characters in message
 130
 131    Error_Msg_Warn : Boolean;
 132    --  Used if current message contains a < insertion character to indicate
 133    --  if the current message is a warning message.
 134
 135    Error_Msg_String : String (1 .. 4096);
 136    Error_Msg_Strlen : Natural;
 137    --  Used if current message contains a ~ insertion character to indicate
 138    --  insertion of the string Error_Msg_String (1 .. Error_Msg_Strlen).
 139
 140 end Err_Vars;