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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              B I N D E R R                               --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

--  This package contains the routines to output error messages for the binder
--  and also the routines for handling fatal error conditions in the binder.

with Namet; use Namet;
with Types; use Types;

package Binderr is

   Errors_Detected : Int;
   --  Number of errors detected so far

   Warnings_Detected : Int;
   --  Number of warnings detected

   Info_Prefix_Suppress : Boolean := False;
   --  If set to True, the normal "info: " header before messages generated
   --  by Error_Msg_Info will be omitted.

   ---------------------------------------------------------
   -- Error Message Text and Message Insertion Characters --
   ---------------------------------------------------------

   --  Error message text strings are composed of letters, digits and the
   --  special characters space, comma, period, colon and semicolon,
   --  apostrophe and parentheses. Special insertion characters can also
   --  appear which cause the error message circuit to modify the given
   --  string as follows:

   --    Insertion character { (Left brace: insert file name from Names table)
   --      The character { is replaced by the text for the file name specified
   --      by the File_Name_Type value stored in Error_Msg_File_1. The name is
   --      always enclosed in quotes. A second { may appear in a single message
   --      in which case it is similarly replaced by the name which is
   --      specified by the File_Name_Type value stored in Error_Msg_File_2.

   --    Insertion character $ (Dollar: insert unit name from Names table)
   --      The character & is replaced by the text for the unit name specified
   --      by the Name_Id value stored in Error_Msg_Unit_1. The name is always
   --      enclosed in quotes. A second $ may appear in a single message in
   --      which case it is similarly replaced by the name which is specified
   --      by the Name_Id value stored in Error_Msg_Unit_2.

   --    Insertion character # (Pound: insert non-negative number in decimal)
   --      The character # is replaced by the contents of Error_Msg_Nat_1
   --      converted into an unsigned decimal string. A second # may appear
   --      in a single message, in which case it is similarly replaced by
   --      the value stored in Error_Msg_Nat_2.

   --    Insertion character ? (Question mark: warning message)
   --      The character ?, which must be the first character in the message
   --      string, signals a warning message instead of an error message.

   -----------------------------------------------------
   -- Global Values Used for Error Message Insertions --
   -----------------------------------------------------

   --  The following global variables are essentially additional parameters
   --  passed to the error message routine for insertion sequences described
   --  above. The reason these are passed globally is that the insertion
   --  mechanism is essentially an untyped one in which the appropriate
   --  variables are set depending on the specific insertion characters used.

   Error_Msg_Name_1 : Name_Id;
   --  Name_Id value for % insertion characters in message

   Error_Msg_File_1 : File_Name_Type;
   Error_Msg_File_2 : File_Name_Type;
   --  Name_Id values for { insertion characters in message

   Error_Msg_Unit_1 : Unit_Name_Type;
   Error_Msg_Unit_2 : Unit_Name_Type;
   --  Name_Id values for $ insertion characters in message

   Error_Msg_Nat_1 : Nat;
   Error_Msg_Nat_2 : Nat;
   --  Integer values for # insertion characters in message

   ------------------------------
   -- Error Output Subprograms --
   ------------------------------

   procedure Error_Msg (Msg : String);
   --  Output specified error message to standard error or standard output
   --  as governed by the brief and verbose switches, and update error
   --  counts appropriately

   procedure Error_Msg_Info (Msg : String);
   --  Output information line. Indentical in effect to Error_Msg, except
   --  that the prefix is info: instead of error: and the error count is
   --  not incremented. The prefix may be suppressed by setting the global
   --  variable Info_Prefix_Suppress to True.

   procedure Error_Msg_Output (Msg : String; Info : Boolean);
   --  Output given message, with insertions, to current message output file.
   --  The second argument is True for an info message, false for a normal
   --  warning or error message. Normally this is not called directly, but
   --  rather only by Error_Msg or Error_Msg_Info. It is called directly
   --  when the caller must control whether the output goes to stderr or
   --  stdout (Error_Msg_Output always goes to the current output file).

   procedure Finalize_Binderr;
   --  Finalize error output for one file

   procedure Initialize_Binderr;
   --  Initialize error output for one file

end Binderr;