parameter/ConfigurableElementAggregator.cpp

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#include "ConfigurableElementAggregator.h"
#include "ConfigurableElement.h"

CConfigurableElementAggregator::CConfigurableElementAggregator(std::list<const CConfigurableElement*>& aggregateList, MatchesAggregationCriterion pfnMatchesAggregationCriterion)
    : _aggregateList(aggregateList), _pfnMatchesAggregationCriterion(pfnMatchesAggregationCriterion)
{
}

// Aggregate
void CConfigurableElementAggregator::aggegate(const CConfigurableElement* pConfigurableElement)
{
    doAggregate(pConfigurableElement, _aggregateList);
}

// Recursive aggregate
bool CConfigurableElementAggregator::doAggregate(const CConfigurableElement* pConfigurableElement, std::list<const CConfigurableElement*>& aggregateList)
{
    if (!(pConfigurableElement->*_pfnMatchesAggregationCriterion)()) {

        // Not a candidate for aggregation
        return false;
    }
    // Check children
    std::list<const CConfigurableElement*> childAggregateElementList;

    uint32_t uiIndex;
    uint32_t uiNbChildren = pConfigurableElement->getNbChildren();
    uint32_t uiNbMatchingChildren = 0;

    for (uiIndex = 0; uiIndex < uiNbChildren; uiIndex++) {

        const CConfigurableElement* pChildConfigurableElement = static_cast<const CConfigurableElement*>(pConfigurableElement->getChild(uiIndex));

        uiNbMatchingChildren += doAggregate(pChildConfigurableElement, childAggregateElementList);
    }

    if (uiNbMatchingChildren == uiNbChildren) {

        // All children match => self is a match
        aggregateList.push_back(pConfigurableElement);

        return true;
    } else {
        // Add children if any
        aggregateList.insert(aggregateList.end(), childAggregateElementList.begin(), childAggregateElementList.end());

        return false;
    }
}