/*
 * CalibrationInfo.cc
 *
 *  Created on: Dec 24, 2012
 *      Author: f.casimir
 */

#include "DicError.hh"
#include "CalibrationInfoWriter.hh"
#include "Process.hh"
#include "ServicesServer.hh"

namespace AMDA {
namespace Parameters {

	CalibrationInfoWriter::CalibrationInfoWriter() {
	}

	CalibrationInfoWriter::~CalibrationInfoWriter() {
	}

	void CalibrationInfoWriter::operator()(Parameter& pParameter) {
		/// Parse _expression
		CalibrationInfoWriter::Parser lParser(_expression);
		if (lParser._functionName != "" ) {
			/// Execute function
			CalibrationInfoProcess functor = ServicesServer::getInstance()->getService<CalibrationInfoProcess>(lParser._functionName);
			if ( ! functor) {
				std::stringstream oss;
				oss << "Operation: '" << lParser._functionName << "' not exist";
				BOOST_THROW_EXCEPTION(Process_exception() << AMDA::errno_code(AMDA_PROCESS_ERR) << AMDA::ex_msg(oss.str()));
			} else {
				functor(pParameter,lParser._attributeList);
			}
		}
	}

	CalibrationInfoWriter::Parser::Parser( std::string pExpression) : _state(funcName){
		std::string::iterator it = pExpression.begin();

		std::string attribute = "";

		while((it != pExpression.end()) && ( _state!=undefined)) {
			switch(*it) {
			case '(':
				if (_state==funcName) { _state=attributeVal; } else { _state=undefined; }
				break;
			case ')':
				if (_state==attributeVal) { _state=end; } else { _state=undefined; }
				if ( ! attribute.empty() ) { _attributeList.push_back(attribute); attribute=""; }
				break;
			case ' ':
				break;
			case ',':
				_attributeList.push_back(attribute); attribute="";
				break;
			default:
				if (isAuthorisedSymbol(*it)) {
					switch(_state) {
					case funcName: _functionName.append(1, *it); break;
					case attributeVal: attribute.append(1, *it); break;
					default:
						_state=undefined;
					}
				} else {
					_state=undefined;
				}
				break;
			}
			++it;
		}
		if (_state==undefined) {
			BOOST_THROW_EXCEPTION(Process_exception() << AMDA::errno_code(AMDA_PROCESS_ERR) << AMDA::ex_msg(std::string("Error to parse expression: ")+pExpression));
		}
	}

} /* namespace Parameters */
} /* namespace AMDA */