errors.hpp

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/*****************************************************************************
** Ifdefs
*****************************************************************************/

#ifndef ECL_SIGSLOTS_LITE_ERRORS_HPP_
#define ECL_SIGSLOTS_LITE_ERRORS_HPP_

/*****************************************************************************
** Namespaces
*****************************************************************************/

namespace ecl {
namespace lite {
namespace sigslots {

enum ErrorFlag {
        NoError = 0,                            
        UnknownError = -1,              
        OutOfResourcesError = -21,      
};

class Error {
public:
        Error(const sigslots::ErrorFlag& flag = UnknownError) : error_flag(flag) {}
        virtual sigslots::ErrorFlag flag() const { return error_flag; }
        virtual const char* what() const {
                switch (error_flag) {
                        case (NoError) : { return noErrorString(); }
                        case (OutOfResourcesError) : { return outOfResourcesErrorString(); }
                        default : { return unknownErrorString(); }
                }
        }
private:
        const char* noErrorString() const { return "No error."; }
        const char* unknownErrorString() const { return "Unknown error."; }
        const char* outOfResourcesErrorString() const { return "You cannot add any more to this signal/slot interface (capacity is already fully utilised)."; }
        ErrorFlag error_flag;

};

} // namespace sigslots
} // namespace lite
} // namespace ecl

#endif /* ECL_SIGSLOTS_LITE_ERRORS_HPP_ */