/data/refman/pasoursint/CMSSW_5_3_0/src/L1Trigger/GlobalTrigger/src/L1GtAlgorithmEvaluation.cc

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// this class header
#include "L1Trigger/GlobalTrigger/interface/L1GtAlgorithmEvaluation.h"

// system include files
#include <string>

#include <stack>
#include <queue>
#include <vector>

#include <iostream>
#include <iomanip>

#include <boost/algorithm/string.hpp>
#include <ext/hash_map>

// user include files


//
#include "DataFormats/L1GlobalTrigger/interface/L1GlobalTriggerObjectMapFwd.h"
#include "CondFormats/L1TObjects/interface/L1GtAlgorithm.h"

#include "L1Trigger/GlobalTrigger/interface/L1GtConditionEvaluation.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/Exception.h"


L1GtAlgorithmEvaluation::L1GtAlgorithmEvaluation(const L1GtAlgorithm& alg) :
  m_algoResult(false),
  m_logicalExpression(alg.algoLogicalExpression()),
  m_rpnVector(alg.algoRpnVector()){

    // the rest is properly initialized by default

}


// methods

void L1GtAlgorithmEvaluation::evaluateAlgorithm(const int chipNumber,
    const std::vector<ConditionEvaluationMap>& conditionResultMaps) {

    // set result to false if there is no expression 
    if (m_rpnVector.empty() ) {
        m_algoResult = false;

        // it should never be happen
        throw cms::Exception("FailModule")
        << "\nEmpty RPN vector for the logical expression = "
        << m_logicalExpression
        << std::endl;

    }
    
    // reserve memory
    int rpnVectorSize = m_rpnVector.size();
    
    m_algoCombinationVector.reserve(rpnVectorSize);
    m_operandTokenVector.reserve(rpnVectorSize);

    // stack containing temporary results
    // FIXME we shall find a better solution than static
    static  std::stack<bool, std::vector<bool> > resultStack;
    bool b1, b2;

    int opNumber = 0;

    for (RpnVector::const_iterator it = m_rpnVector.begin(); it != m_rpnVector.end(); it++) {

        //LogTrace("L1GlobalTrigger")
        //<< "\nit->operation = " << it->operation
        //<< "\nit->operand =   '" << it->operand << "'\n"
        //<< std::endl;

        switch (it->operation) {

            case L1GtLogicParser::OP_OPERAND: {

                CItEvalMap itCond = (conditionResultMaps.at(chipNumber)).find(it->operand);
                if (itCond != (conditionResultMaps[chipNumber]).end()) {

                    if (0 == itCond->second) {
                        // it should never be happen, only valid conditions are in the maps
                        throw cms::Exception("FailModule") << "\nCondition "
                                << (it->operand)
                                << " NULL pointer found in condition map"
                                << std::endl;
                    }

                    //
                    bool condResult = (itCond->second)->condLastResult();

                    resultStack.push(condResult);

                    // only conditions are added to /counted in m_operandTokenVector 
                    // opNumber is the index of the condition in the logical expression
                    OperandToken opToken;
                    opToken.tokenName = it->operand;
                    opToken.tokenNumber = opNumber;
                    opToken.tokenResult = condResult;
                    
                    m_operandTokenVector.push_back(opToken);
                    opNumber++;
                    
                    //
                    CombinationsInCond const & combInCondition = (itCond->second)->getCombinationsInCond();
                    m_algoCombinationVector.push_back(combInCondition);

                }
                else {

                    // it should never be happen, all conditions are in the maps
                    throw cms::Exception("FailModule")
                    << "\nCondition " << (it->operand) << " not found in condition map"
                    << std::endl;

                }

            }

                break;
        case  L1GtLogicParser::OP_NOT: {
                b1 = resultStack.top();
                resultStack.pop(); // pop the top
                resultStack.push(!b1); // and push the result
            }

                break;
            case L1GtLogicParser::OP_OR: {
                b1 = resultStack.top();
                resultStack.pop();
                b2 = resultStack.top();
                resultStack.pop();
                resultStack.push(b1 || b2);
            }

                break;
            case L1GtLogicParser::OP_AND: {
                b1 = resultStack.top();
                resultStack.pop();
                b2 = resultStack.top();
                resultStack.pop();
                resultStack.push(b1 && b2);
            }

                break;
            default: {
                // should not arrive here
            }

                break;
        }

    }

    // get the result in the top of the stack

    m_algoResult = resultStack.top();

    // clear resultStack
    while(!resultStack.empty()) resultStack.pop();

}

// print algorithm evaluation
void L1GtAlgorithmEvaluation::print(std::ostream& myCout) const {

    myCout << std::endl;

    myCout << "    Algorithm result:          " << m_algoResult << std::endl;

    myCout << "    CombinationVector size:    " << m_algoCombinationVector.size() << std::endl;

    int operandTokenVectorSize = m_operandTokenVector.size();

    myCout << "    Operand token vector size: " << operandTokenVectorSize;

    if (operandTokenVectorSize == 0) {
        myCout << "   - not properly initialized! " << std::endl;
    }
    else {
        myCout << std::endl;

        for (int i = 0; i < operandTokenVectorSize; ++i) {

            myCout << "      " << std::setw(5) << (m_operandTokenVector[i]).tokenNumber << "\t"
            << std::setw(25) << (m_operandTokenVector[i]).tokenName << "\t" 
            << (m_operandTokenVector[i]).tokenResult 
            << std::endl;

        }

    }

    myCout << std::endl;
}