xref: /external/parameter-framework/upstream/parameter/SelectionCriterionRule.cpp

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#include "SelectionCriterionRule.h"
#include "SelectionCriterion.h"
#include "XmlDomainSerializingContext.h"
#include "XmlDomainImportContext.h"
#include "SelectionCriteriaDefinition.h"
#include "SelectionCriterionTypeInterface.h"
#include "RuleParser.h"
#include <assert.h>

#define base CRule

using std::string;

const CSelectionCriterionRule::SMatchingRuleDescription
    CSelectionCriterionRule::_astMatchesWhen[CSelectionCriterionRule::ENbMatchesWhen] = {
        {"Is", true}, {"IsNot", true}, {"Includes", false}, {"Excludes", false}};

// Class kind
string CSelectionCriterionRule::getKind() const
{
    return "SelectionCriterionRule";
}

// Content dumping
string CSelectionCriterionRule::logValue(utility::ErrorContext & /*cxt*/) const
{
    // Dump rule
    return dump();
}

// Parse
bool CSelectionCriterionRule::parse(CRuleParser &ruleParser, string &strError)
{
    // Criterion
    _pSelectionCriterion =
        ruleParser.getSelectionCriteriaDefinition()->getSelectionCriterion(ruleParser.getType());

    // Check existence
    if (!_pSelectionCriterion) {

        strError = "Couldn't find selection criterion " + ruleParser.getType();

        return false;
    }

    // Verb
    string strMatchesWhen;

    if (!ruleParser.next(strMatchesWhen, strError)) {

        return false;
    }
    // Value
    string strValue;

    if (!ruleParser.next(strValue, strError)) {

        return false;
    }

    // Matches when
    if (!setMatchesWhen(strMatchesWhen, strError)) {

        strError = "Verb error: " + strError;

        return false;
    }

    // Value
    if (!_pSelectionCriterion->getCriterionType()->getNumericalValue(strValue, _iMatchValue)) {

        strError = "Value error: \"" + strValue + "\" is not part of criterion \"" +
                   _pSelectionCriterion->getCriterionName() + "\"";

        return false;
    }

    return true;
}

// Dump
string CSelectionCriterionRule::dump() const
{
    // Value
    string value;
    _pSelectionCriterion->getCriterionType()->getLiteralValue(_iMatchValue, value);

    // "<Name> <Verb> <Value>"
    return string(_pSelectionCriterion->getName()) + " " +
           _astMatchesWhen[_eMatchesWhen].pcMatchesWhen + " " + value;
}

// Rule check
bool CSelectionCriterionRule::matches() const
{
    assert(_pSelectionCriterion);

    switch (_eMatchesWhen) {
    case EIs:
        return _pSelectionCriterion->is(_iMatchValue);
    case EIsNot:
        return _pSelectionCriterion->isNot(_iMatchValue);
    case EIncludes:
        return _pSelectionCriterion->includes(_iMatchValue);
    case EExcludes:
        return _pSelectionCriterion->excludes(_iMatchValue);
    default:
        assert(0);
        return false;
    }
}

// From IXmlSink
bool CSelectionCriterionRule::fromXml(const CXmlElement &xmlElement,
                                      CXmlSerializingContext &serializingContext)
{
    // Retrieve actual context
    CXmlDomainImportContext &xmlDomainImportContext =
        static_cast<CXmlDomainImportContext &>(serializingContext);

    // Get selection criterion
    string strSelectionCriterion;
    xmlElement.getAttribute("SelectionCriterion", strSelectionCriterion);

    _pSelectionCriterion =
        xmlDomainImportContext.getSelectionCriteriaDefinition()->getSelectionCriterion(
            strSelectionCriterion);

    // Check existence
    if (!_pSelectionCriterion) {

        xmlDomainImportContext.setError("Couldn't find selection criterion " +
                                        strSelectionCriterion + " in " + getKind() + " " +
                                        xmlElement.getPath());

        return false;
    }

    // Get MatchesWhen
    string strMatchesWhen;
    xmlElement.getAttribute("MatchesWhen", strMatchesWhen);
    string strError;

    if (!setMatchesWhen(strMatchesWhen, strError)) {

        xmlDomainImportContext.setError("Wrong MatchesWhen attribute " + strMatchesWhen + " in " +
                                        getKind() + " " + xmlElement.getPath() + ": " + strError);

        return false;
    }

    // Get Value
    string strValue;
    xmlElement.getAttribute("Value", strValue);

    if (!_pSelectionCriterion->getCriterionType()->getNumericalValue(strValue, _iMatchValue)) {

        xmlDomainImportContext.setError("Wrong Value attribute value " + strValue + " in " +
                                        getKind() + " " + xmlElement.getPath());

        return false;
    }

    // Done
    return true;
}

// From IXmlSource
void CSelectionCriterionRule::toXml(CXmlElement &xmlElement, CXmlSerializingContext & /*ctx*/) const
{
    assert(_pSelectionCriterion);

    // Set selection criterion
    xmlElement.setAttribute("SelectionCriterion", _pSelectionCriterion->getName());

    // Set MatchesWhen
    xmlElement.setAttribute("MatchesWhen", _astMatchesWhen[_eMatchesWhen].pcMatchesWhen);

    // Set Value
    string strValue;

    _pSelectionCriterion->getCriterionType()->getLiteralValue(_iMatchValue, strValue);

    xmlElement.setAttribute("Value", strValue);
}

// XML MatchesWhen attribute parsing
bool CSelectionCriterionRule::setMatchesWhen(const string &strMatchesWhen, string &strError)
{
    for (size_t matchesWhen = 0; matchesWhen < ENbMatchesWhen; matchesWhen++) {

        const SMatchingRuleDescription *pstMatchingRuleDescription = &_astMatchesWhen[matchesWhen];

        if (strMatchesWhen == pstMatchingRuleDescription->pcMatchesWhen) {

            // Found it!

            // Get Type
            const ISelectionCriterionTypeInterface *pSelectionCriterionType =
                _pSelectionCriterion->getCriterionType();

            // Check compatibility if relevant
            if (!pSelectionCriterionType->isTypeInclusive() &&
                !pstMatchingRuleDescription->bExclusiveTypeCompatible) {

                strError = "Value incompatible with exclusive kind of type";

                return false;
            }

            // Store
            _eMatchesWhen = (MatchesWhen)matchesWhen;

            return true;
        }
    }

    strError = "Value not found";

    return false;
}