-- Simple debugging services. Print something if the "DEBUGLEVEL" environment
-- variable is set to an integer value greater than zero.
-- Copyright (C)2021-2023, Philip Munts dba Munts Technologies.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
-- * Redistributions of source code must retain the above copyright notice,
-- this list of conditions and the following disclaimer.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.
WITH Ada.Text_IO;
WITH Ada.Environment_Variables;
PACKAGE BODY Debug IS
-- Fetch the value of the DEBUGLEVEL environment variable
FUNCTION Level RETURN Natural IS
BEGIN
RETURN Natural'Value(Ada.Environment_Variables.Value("DEBUGLEVEL"));
EXCEPTION
WHEN OTHERS =>
RETURN 0;
END Level;
-- Indicate if debug is enabled
FUNCTION Enabled RETURN Boolean IS
BEGIN
RETURN Level > 0;
END Enabled;
-- Print a string if DEBUGLEVEL > 0
PROCEDURE Put(s : String) IS
BEGIN
IF Level > 0 THEN
Ada.Text_IO.Put_Line(s);
END IF;
END Put;
-- Print information about an exception if DEBUGLEVEL > 0
PROCEDURE Put(e : Ada.Exceptions.Exception_Occurrence) IS
BEGIN
IF Level > 0 THEN
Ada.Text_IO.Put_Line(Ada.Exceptions.Exception_Name(e));
Ada.Text_IO.Put_Line(Ada.Exceptions.Exception_Message(e));
END IF;
END Put;
END Debug;