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      1 /*
      2  * Copyright (c) 2011-2014, Intel Corporation
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without modification,
      6  * are permitted provided that the following conditions are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright notice, this
      9  * list of conditions and the following disclaimer.
     10  *
     11  * 2. Redistributions in binary form must reproduce the above copyright notice,
     12  * this list of conditions and the following disclaimer in the documentation and/or
     13  * other materials provided with the distribution.
     14  *
     15  * 3. Neither the name of the copyright holder nor the names of its contributors
     16  * may be used to endorse or promote products derived from this software without
     17  * specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
     23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #include "ConfigurableElementAggregator.h"
     31 #include "ConfigurableElement.h"
     32 
     33 CConfigurableElementAggregator::CConfigurableElementAggregator(std::list<const CConfigurableElement*>& aggregateList, MatchesAggregationCriterion pfnMatchesAggregationCriterion)
     34     : _aggregateList(aggregateList), _pfnMatchesAggregationCriterion(pfnMatchesAggregationCriterion)
     35 {
     36 }
     37 
     38 // Aggregate
     39 void CConfigurableElementAggregator::aggegate(const CConfigurableElement* pConfigurableElement)
     40 {
     41     doAggregate(pConfigurableElement, _aggregateList);
     42 }
     43 
     44 // Recursive aggregate
     45 bool CConfigurableElementAggregator::doAggregate(const CConfigurableElement* pConfigurableElement, std::list<const CConfigurableElement*>& aggregateList)
     46 {
     47     if (!(pConfigurableElement->*_pfnMatchesAggregationCriterion)()) {
     48 
     49         // Not a candidate for aggregation
     50         return false;
     51     }
     52     // Check children
     53     std::list<const CConfigurableElement*> childAggregateElementList;
     54 
     55     size_t uiIndex;
     56     size_t uiNbChildren = pConfigurableElement->getNbChildren();
     57     size_t uiNbMatchingChildren = 0;
     58 
     59     for (uiIndex = 0; uiIndex < uiNbChildren; uiIndex++) {
     60 
     61         const CConfigurableElement* pChildConfigurableElement = static_cast<const CConfigurableElement*>(pConfigurableElement->getChild(uiIndex));
     62 
     63         uiNbMatchingChildren += doAggregate(pChildConfigurableElement, childAggregateElementList);
     64     }
     65 
     66     if (uiNbMatchingChildren == uiNbChildren) {
     67 
     68         // All children match => self is a match
     69         aggregateList.push_back(pConfigurableElement);
     70 
     71         return true;
     72     } else {
     73         // Add children if any
     74         aggregateList.insert(aggregateList.end(), childAggregateElementList.begin(), childAggregateElementList.end());
     75 
     76         return false;
     77     }
     78 }
     79