parameter/Parameter.cpp

/* 
 * INTEL CONFIDENTIAL
 * Copyright © 2011 Intel 
 * Corporation All Rights Reserved.
 * 
 * The source code contained or described herein and all documents related to
 * the source code ("Material") are owned by Intel Corporation or its suppliers
 * or licensors. Title to the Material remains with Intel Corporation or its
 * suppliers and licensors. The Material contains trade secrets and proprietary
 * and confidential information of Intel or its suppliers and licensors. The
 * Material is protected by worldwide copyright and trade secret laws and
 * treaty provisions. No part of the Material may be used, copied, reproduced,
 * modified, published, uploaded, posted, transmitted, distributed, or
 * disclosed in any way without Intel’s prior express written permission.
 * 
 * No license under any patent, copyright, trade secret or other intellectual
 * property right is granted to or conferred upon you by disclosure or delivery
 * of the Materials, either expressly, by implication, inducement, estoppel or
 * otherwise. Any license under such intellectual property rights must be
 * express and approved by Intel in writing.
 * 
 * CREATED: 2011-06-01
 * UPDATED: 2011-07-27
 */
#include "Parameter.h"
#include "ParameterType.h"
#include "ParameterAccessContext.h"
#include "ConfigurationAccessContext.h"
#include "ParameterBlackboard.h"

#define base CBaseParameter

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

CInstanceConfigurableElement::Type CParameter::getType() const
{
    return EParameter;
}

// XML configuration settings parsing/composing
bool CParameter::serializeXmlSettings(CXmlElement& xmlConfigurationSettingsElementContent, CConfigurationAccessContext& configurationAccessContext) const
{
    // Check for value space
    handleValueSpaceAttribute(xmlConfigurationSettingsElementContent, configurationAccessContext);

    // Base
    return base::serializeXmlSettings(xmlConfigurationSettingsElementContent, configurationAccessContext);
}

// Value space handling for configuration import
void CParameter::handleValueSpaceAttribute(CXmlElement& xmlConfigurableElementSettingsElement, CConfigurationAccessContext& configurationAccessContext) const
{
    // Delegate to type
    static_cast<const CParameterType*>(getTypeElement())->handleValueSpaceAttribute(xmlConfigurableElementSettingsElement, configurationAccessContext);
}

uint32_t CParameter::getFootPrint() const
{
    return getSize();
}

uint32_t CParameter::getSize() const
{
    return static_cast<const CParameterType*>(getTypeElement())->getSize();
}

// Used for simulation and virtual subsystems
void CParameter::setDefaultValues(CParameterAccessContext& parameterAccessContext) const
{
    // Get default value from type
    uint32_t uiDefaultValue = static_cast<const CParameterType*>(getTypeElement())->getDefaultValue();

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

    // Beware this code works on little endian architectures only!
    pBlackboard->writeInteger(&uiDefaultValue, getSize(), getOffset() - parameterAccessContext.getBaseOffset(), parameterAccessContext.isBigEndianSubsystem());
}

/// Actual parameter access
// String access
bool CParameter::doSetValue(const string& strValue, uint32_t uiOffset, CParameterAccessContext& parameterAccessContext) const
{
    return doSet(strValue, uiOffset, parameterAccessContext);
}

void CParameter::doGetValue(string& strValue, uint32_t uiOffset, CParameterAccessContext& parameterAccessContext) const
{
    doGet(strValue, uiOffset, parameterAccessContext);
}

// Boolean access
bool CParameter::accessAsBoolean(bool& bValue, bool bSet, CParameterAccessContext& parameterAccessContext) const
{
    return doAccess(bValue, bSet, parameterAccessContext);
}

// Integer Access
bool CParameter::accessAsInteger(uint32_t& uiValue, bool bSet, CParameterAccessContext& parameterAccessContext) const
{
    return doAccess(uiValue, bSet, parameterAccessContext);
}

// Signed Integer Access
bool CParameter::accessAsSignedInteger(int32_t& iValue, bool bSet, CParameterAccessContext& parameterAccessContext) const
{
    return doAccess(iValue, bSet, parameterAccessContext);
}

// Double Access
bool CParameter::accessAsDouble(double& dValue, bool bSet, CParameterAccessContext& parameterAccessContext) const
{
    return doAccess(dValue, bSet, parameterAccessContext);
}

// Generic Access
template <typename type>
bool CParameter::doAccess(type& value, bool bSet, CParameterAccessContext& parameterAccessContext) const
{
    bool bSuccess;

    if (bSet) {

        if  (doSet(value, getOffset() - parameterAccessContext.getBaseOffset(), parameterAccessContext)) {

            // Synchronize
            bSuccess = sync(parameterAccessContext);
        } else {

            bSuccess = false;
        }
    } else {

        bSuccess = doGet(value, getOffset() - parameterAccessContext.getBaseOffset(), parameterAccessContext);
    }
    if (!bSuccess) {

        // Append parameter path to error
        parameterAccessContext.appendToError(" " + getPath());
    }
    return bSuccess;
}

template <typename type>
bool CParameter::doSet(type value, uint32_t uiOffset, CParameterAccessContext& parameterAccessContext) const
{
    uint32_t uiData;

    if (!static_cast<const CParameterType*>(getTypeElement())->toBlackboard(value, uiData, parameterAccessContext)) {

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

    // Beware this code works on little endian architectures only!
    pBlackboard->writeInteger(&uiData, getSize(), uiOffset, parameterAccessContext.isBigEndianSubsystem());

    return true;
}

template <typename type>
bool CParameter::doGet(type& value, uint32_t uiOffset, CParameterAccessContext& parameterAccessContext) const
{
    uint32_t uiData = 0;

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

    // Beware this code works on little endian architectures only!
    pBlackboard->readInteger(&uiData, getSize(), uiOffset, parameterAccessContext.isBigEndianSubsystem());

    return static_cast<const CParameterType*>(getTypeElement())->fromBlackboard(value, uiData, parameterAccessContext);
}