subscriber.cc

/* Copyright (c) 2006-2010, Universities Space Research Association (USRA).
*  All rights reserved.
*
* 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.
*     * Redistributions in binary form must reproduce the above copyright
*       notice, this list of conditions and the following disclaimer in the
*       documentation and/or other materials provided with the distribution.
*     * Neither the name of the Universities Space Research Association nor the
*       names of its contributors may be used to endorse or promote products
*       derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY USRA ``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 USRA 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.
*/

#include "subscriber.hh"

using std::string;

// The subscribers.  Their naming convention is:
//   Subscribe<value-type><param-type>...

static SubscribeInt SubscriberInt = NULL;
static SubscribeReal SubscriberReal = NULL;
static SubscribeString SubscriberString = NULL;
static SubscribeBoolString SubscriberBoolString = NULL;
static SubscribeBoolIntInt SubscriberBoolIntInt = NULL;

// Functions to set the subcribers for the system; so similar that a macro is
// convenient for defining them.

#define defSubscriber(signature) \
void setSubscriber##signature (Subscribe##signature s) \
{ \
  Subscriber##signature = s; \
}

defSubscriber(Int)
defSubscriber(Real)
defSubscriber(String)
defSubscriber(BoolString)
defSubscriber(BoolIntInt)


// The overloaded publish function, one for each value/parameter combination
// found in this application.

void publish (const string& state_name, int val)
{
  SubscriberInt (state_name, val);
}

void publish (const string& state_name, float val)
{
  SubscriberReal (state_name, val);
}

void publish (const string& state_name, const string& val)
{
  SubscriberString (state_name, val);
}

void publish (const std::string& state_name, bool val, const std::string& arg)
{
  SubscriberBoolString (state_name, val, arg);
}

void publish (const std::string& state_name, bool val, int arg1, int arg2)
{
  SubscriberBoolIntInt (state_name, val, arg1, arg2);
}