upstream/parameter/StringParameter.cpp

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 * Copyright (c) 2011-2014, Intel Corporation
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#include "StringParameter.h"
#include "StringParameterType.h"
#include "ParameterAccessContext.h"
#include "ConfigurationAccessContext.h"
#include "ParameterBlackboard.h"

#define base CBaseParameter

using std::string;

CStringParameter::CStringParameter(const string &strName, const CTypeElement *pTypeElement)
    : base(strName, pTypeElement)
{
}

CInstanceConfigurableElement::Type CStringParameter::getType() const
{
    return EStringParameter;
}

size_t CStringParameter::getFootPrint() const
{
    return getSize();
}

size_t CStringParameter::getSize() const
{
    return static_cast<const CStringParameterType *>(getTypeElement())->getMaxLength() + 1;
}

// Used for simulation and virtual subsystems
void CStringParameter::setDefaultValues(CParameterAccessContext &parameterAccessContext) const
{
    // Write blackboard
    CParameterBlackboard *pBlackboard = parameterAccessContext.getParameterBlackboard();

    pBlackboard->writeString("", getOffset());
}

// Actual parameter access (tuning)
bool CStringParameter::doSetValue(const string &strValue, size_t offset,
                                  CParameterAccessContext &parameterAccessContext) const
{
    if (strValue.length() >= getSize()) {
        using std::to_string;
        parameterAccessContext.setError("Can not set a string of length " +
                                        to_string(strValue.length()) + ": maximum length is " +
                                        std::to_string(getSize() - 1));

        return false;
    }

    // Write blackboard
    CParameterBlackboard *pBlackboard = parameterAccessContext.getParameterBlackboard();

    pBlackboard->writeString(strValue, offset);

    return true;
}

void CStringParameter::doGetValue(string &strValue, size_t offset,
                                  CParameterAccessContext &parameterAccessContext) const
{
    parameterAccessContext.getParameterBlackboard()->readString(strValue, offset);
}