Signal.hpp

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#ifndef ORG_EEROS_CONTROL_SIGNAL_HPP_
#define ORG_EEROS_CONTROL_SIGNAL_HPP_

#include <string>
#include <list>
#include <type_traits>
#include <eeros/types.hpp>
#include <eeros/control/SignalInterface.hpp>

namespace eeros {
    namespace control {
        
        template < typename T = double >
        class Signal : public SignalInterface {
        public:
            Signal() {
                id = signalCounter++;
//              signalList.push_back(this);
            }
            
            virtual sigid_t getId() const {
                return static_cast<sigid_t>(id) << 16;
            }
            
            virtual std::string getName() const {
                return name;
            }
            
            virtual void setName(std::string n) {
                name = name;
            }
            
            virtual std::string getLabel() const {
//              std::stringstream label;
//              label << '#' << id << '.' << index << ": " << getName(index);
//              if(getAffiliation(index) != "") {
//                  label << " (" << getAffiliation(index) << ')';
//              }
//              if(getUnit(index) != "") {
//                  label << " [" << getUnit(index) << ']';
//              }
//              return label.str();
                return name; // TODO
            }
            
            virtual T getValue() const {
                return value;
            }
            
            virtual void setValue(T newValue) {
                value = newValue;
            }
            
            template < typename VT >
            void setValue(VT newValue) {
                value = newValue;
            }
            
            virtual timestamp_t getTimestamp() const {
                return timestamp;
            }
            
            virtual void setTimestamp(timestamp_t newTimestamp) {
                timestamp = newTimestamp;
            }
            
            virtual void clear() {
                _clear<T>();
            }
            
            Signal<T>& operator= (Signal<T> right) {
                value = right.value;
                timestamp = right.timestamp;
                return *this;
            }
            
            Signal<T>& operator= (T right) {
                value = right;
                return *this;
            }
            
            static Signal<T>& getIllegalSignal() {
                return illegalSignal;
            }
            
            static std::list<SignalInterface*> getSignalList() {
                return signalList;
            }
            
            static SignalInterface* getSignalById(sigid_t id) {
                std::list<SignalInterface*>::iterator i = signalList.begin();
                while(i != signalList.end()) {
                    if((*i)->getId() == id) {
                        return (*i);
                    }
                    i++;
                }
                return NULL;
            }
            
        protected:
            T value;
            timestamp_t timestamp;
            sigid_t id;
            std::string name;
        
        private:
            template <typename S> typename std::enable_if<std::is_arithmetic<S>::value>::type _clear() {
                value = 0;
            }
            
            template <typename S> typename std::enable_if<!std::is_arithmetic<S>::value>::type _clear() {
                value.fill(0);
            }
            
            static std::list<SignalInterface*> signalList;
            static uint16_t signalCounter;
            static Signal<T> illegalSignal;
        };
        
        template < typename T>
        std::list<SignalInterface*> Signal<T>::signalList;
        
        template < typename T>
        uint16_t Signal<T>::signalCounter = startSignalId;
        
        template < typename T>
        Signal<T> Signal<T>::illegalSignal;
        
    };
};

#endif /* ORG_EEROS_CONTROL_SIGNAL_HPP_ */