CCA
PortTriggered.cpp
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00001 /* ============================================================
00002  *
00003  * This file is a part of CCA project
00004  *
00005  * Copyright (C) 2011 by Arne Nordmann <anordman at cor-lab dot uni-bielefeld dot de>
00006  *
00007  * This file may be licensed under the terms of the
00008  * GNU Lesser General Public License Version 3 (the ``LGPL''),
00009  * or (at your option) any later version.
00010  *
00011  * Software distributed under the License is distributed
00012  * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
00013  * express or implied. See the LGPL for the specific language
00014  * governing rights and limitations.
00015  *
00016  * You should have received a copy of the LGPL along with this
00017  * program. If not, go to http://www.gnu.org/licenses/lgpl.html
00018  * or write to the Free Software Foundation, Inc.,
00019  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  * The development of this software was supported by:
00022  *   CoR-Lab, Research Institute for Cognition and Robotics
00023  *     Bielefeld University
00024  *
00025  * ============================================================ */
00026 
00031 #include "PortTriggered.h"
00032 
00033 #include <vector>
00034 #include <numeric>
00035 #include <sstream>
00036 #include <iostream>
00037 
00038 using namespace std;
00039 using namespace boost;
00040 
00041 namespace cca {
00042 
00043 StrategyPtr PortTriggered::port(const std::string& name) {
00044     return StrategyPtr(new PortTriggered(name));
00045 }
00046 
00047 PortTriggered::PortTriggered(const std::string& name) :
00048         ProcessingStrategy("Port-Triggered", false, true), portname(name) {
00049 }
00050 
00051 bool PortTriggered::processOnTick() const {
00052     return false;
00053 }
00054 
00055 bool PortTriggered::processOnInputs(
00056         ProcessingStrategy::NamedInputPorts inputs) const {
00057     if (inputs.at(portname)->newItem()) {
00058         return true;
00059     }
00060     return false;
00061 }
00062 
00063 string PortTriggered::print() const {
00064     ostringstream outstream(ostringstream::out);
00065     outstream.precision(3); // Precision when printing double values
00066     outstream << "<" << this->name << ", listening to port '" << this->portname
00067             << "'>";
00068     return outstream.str();
00069 }
00070 
00071 }