%%<copyright>
%% <year>1999-2007</year>
%% <holder>Ericsson AB, All Rights Reserved</holder>
%%</copyright>
%%<legalnotice>
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% The Initial Developer of the Original Code is Ericsson AB.
%%</legalnotice>
%%
%%-----------------------------------------------------------------
%% File: tracer.erl
%% 
%% Description:
%%    This file contains an example of pre and post conditions for 
%%    the corba backend.
%%
%%-----------------------------------------------------------------
-module(tracer).
-include("m.hrl").

%%-----------------------------------------------------------------
%% External exports
%%-----------------------------------------------------------------
-export([pre/3, post/4]).

%%-----------------------------------------------------------------
%% Internal exports
%%-----------------------------------------------------------------
-export([]).

%%-----------------------------------------------------------------
%% External functions
%%-----------------------------------------------------------------
pre(M, F, [State, I]) when integer(I) ->
    io:format("Precond called in process ~p: ~s:~s() ~p\n", [self(), M, F,  [State, I]]),
    ok;
pre(_M, _F, _A) -> %% Just an silly example to get an exception case
    corba:raise(#'m_NotAnInteger'{}).

post(M, F, A, R) ->
    io:format("Postcond called in process ~p: ~s:~s() ~p ~p\n", [self(), M, F, A, R]),
    ok.

%%-----------------------------------------------------------------
%% Internal functions
%%-----------------------------------------------------------------
