C++ ScalarConstPtr类代码示例

bool NTNameValue::isCompatible(StructureConstPtr const & structure)
{
    if (structure.get() == 0) return false;

    ScalarArrayConstPtr nameField = structure->getField<ScalarArray>("name");
    if (nameField.get() == 0 || nameField->getElementType() != pvString)
        return false;

    ScalarArrayConstPtr valueField = structure->getField<ScalarArray>("value");
    if (valueField.get() == 0)
        return false;

    FieldConstPtr field = structure->getField("descriptor");
    if (field.get())
    {
        ScalarConstPtr descriptorField = structure->getField<Scalar>("descriptor");
        if (!descriptorField || descriptorField->getScalarType() != pvString)
            return false;
    }

    NTFieldPtr ntField = NTField::get();

    field = structure->getField("alarm");
    if (field && !ntField->isAlarm(field))
        return false;

    field = structure->getField("timeStamp");
    if (field && !ntField->isTimeStamp(field))
        return false;

    return true;
}

bool NTHistogram::isCompatible(StructureConstPtr const &structure)
{
    if(!structure.get()) return false;

    ScalarArrayConstPtr rangesField = structure->getField<ScalarArray>("ranges");
    if(!rangesField.get() || rangesField->getElementType() != pvDouble) return false;

    ScalarArrayConstPtr valueField = structure->getField<ScalarArray>("value");
    if(!valueField.get()) return false;

    ScalarType scalarType = valueField->getElementType();
    if (scalarType != pvShort &&
        scalarType != pvInt &&
        scalarType != pvLong)
        return false;

    FieldConstPtr field = structure->getField("descriptor");
    if(field)
    {
       ScalarConstPtr descriptorField = structure->getField<Scalar>("descriptor");
       if (!descriptorField.get() || descriptorField->getScalarType() != pvString)
           return false;
    }

    field = structure->getField("alarm");
    if (field.get() && !ntField->isAlarm(field))
        return false;

    field = structure->getField("timeStamp");
    if (field.get() && !ntField->isTimeStamp(field))
        return false;

    return true;
}

static void setValue(PVUnionPtr const &pvUnion, double value)
{
    UnionConstPtr u = pvUnion->getUnion();
    FieldConstPtr field = u->getField(0);
    Type type = field->getType();
    if(type==scalar) {
         ScalarConstPtr scalar = static_pointer_cast<const Scalar>(field);
         ScalarType scalarType = scalar->getScalarType();
         if(scalarType==pvDouble) {
              PVDoublePtr pvValue = static_pointer_cast<PVDouble>(
                   pvDataCreate->createPVScalar(pvDouble));
              pvValue->put(value);
              pvUnion->set(0,pvValue);
              return;
         }
         if(scalarType==pvString) {
              PVStringPtr pvValue = static_pointer_cast<PVString>(
                   pvDataCreate->createPVScalar(pvString));
              stringstream ss;
              ss << "value" << value;
              pvValue->put(ss.str());
              pvUnion->set(0,pvValue);
              return;
         }
         throw std::runtime_error("only pvDouble and pvString are supported");
    }
    if(type==scalarArray) {
         ScalarArrayConstPtr scalarArray = static_pointer_cast<const ScalarArray>(field);
         ScalarType scalarType = scalarArray->getElementType();
         if(scalarType==pvDouble) {
              size_t num = 5;
              PVDoubleArrayPtr pvValue = static_pointer_cast<PVDoubleArray>(
                   pvDataCreate->createPVScalarArray(pvDouble));
              shared_vector<double> data(num);
              for(size_t i=0; i<num; ++i) data[i] = value +i;
              pvValue->replace(freeze(data));
              pvUnion->set(0,pvValue);
              return;
         }
         if(scalarType==pvString) {
              size_t num = 5;
              PVStringArrayPtr pvValue = static_pointer_cast<PVStringArray>(
                   pvDataCreate->createPVScalarArray(pvString));
              shared_vector<string> data(num);
              for(size_t i=0; i<num; ++i) {
                  stringstream ss;
                  ss << "value" << value << i;
                  data[i] = ss.str();
              }
              pvValue->replace(freeze(data));
              pvUnion->set(0,pvValue);
              return;
         }
         throw std::runtime_error("only pvDouble and pvString are supported");
    }
    throw std::runtime_error("only scalar and scalarArray fields are supported");
}

PVScalarPtr PVDataCreate::createPVScalar(ScalarConstPtr const & scalar)
{
     ScalarType scalarType = scalar->getScalarType();
     switch(scalarType) {
     case pvBoolean:
         return PVScalarPtr(new BasePVBoolean(scalar));
     case pvByte:
         return PVScalarPtr(new BasePVByte(scalar));
     case pvShort:
         return PVScalarPtr(new BasePVShort(scalar));
     case pvInt:
         return PVScalarPtr(new BasePVInt(scalar));
     case pvLong:
         return PVScalarPtr(new BasePVLong(scalar));
     case pvUByte:
         return PVScalarPtr(new BasePVUByte(scalar));
     case pvUShort:
         return PVScalarPtr(new BasePVUShort(scalar));
     case pvUInt:
         return PVScalarPtr(new BasePVUInt(scalar));
     case pvULong:
         return PVScalarPtr(new BasePVULong(scalar));
     case pvFloat:
         return PVScalarPtr(new BasePVFloat(scalar));
     case pvDouble:
         return PVScalarPtr(new BasePVDouble(scalar));
     case pvString:
         return PVScalarPtr(new BasePVString(scalar));
     }
     throw std::logic_error("PVDataCreate::createPVScalar should never get here");
}

    static bool isCompatible(StructureConstPtr const &structure)
    {
        if(!structure.get()) return false;

        if (structure->getID() != "codec_t") return false;

        ScalarConstPtr scalarField = structure->getField<Scalar>("name");
        if (scalarField.get() == 0 || scalarField->getScalarType() != pvString)
            return false;

        UnionConstPtr paramField = structure->getField<Union>("parameters");
        if (paramField.get() == 0 || !paramField->isVariant())
            return false;

        return true;
    }

void test_builder()
{
    testDiag("test_builder");

    NTNDArrayAttributeBuilderPtr builder = NTNDArrayAttribute::createBuilder();
    testOk(builder.get() != 0, "Got builder");

    StructureConstPtr structure = builder->
            addTags()->
            addAlarm()->
            addTimeStamp()->
            add("extra",fieldCreate->createScalar(pvString)) ->
            createStructure();
    testOk1(structure.get() != 0);
    if (!structure)
        return;

    testOk1(NTNDArrayAttribute::is_a(structure));
    testOk1(structure->getID() == NTNDArrayAttribute::URI);
    testOk1(structure->getNumberFields() == 9);
    testOk1(structure->getField("name").get() != 0);
    testOk1(structure->getField("value").get() != 0);
    testOk1(structure->getField("tags").get() != 0);
    testOk1(structure->getField("descriptor").get() != 0);
    testOk1(structure->getField("alarm").get() != 0);
    testOk1(structure->getField("timeStamp").get() != 0);
    testOk1(structure->getField("sourceType").get() != 0);
    testOk1(structure->getField("source").get() != 0);

    ScalarConstPtr nameField = structure->getField<Scalar>("name");
    testOk(nameField.get() != 0 && nameField->getScalarType() == pvString,
        "name is string");

    UnionConstPtr valueField = structure->getField<Union>("value");
    testOk(valueField.get() != 0, "value is enum");

    ScalarArrayConstPtr tagsField = structure->getField<ScalarArray>("tags");
    testOk(tagsField.get() != 0 && tagsField->getElementType() == pvString,
        "tags is string[]");

    std::cout << *structure << std::endl;

}

PVStringPtr PVStructure::getStringField(String const &fieldName)
{
    PVFieldPtr pvField  = findSubField(fieldName,this);
    if(pvField.get()==NULL) {
        String message("fieldName ");
        message +=  fieldName + " does not exist";
        this->message(message, errorMessage);
        return nullPVString;
    }
    if(pvField->getField()->getType()==scalar) {
        ScalarConstPtr pscalar = static_pointer_cast<const Scalar>(
            pvField->getField());
        if(pscalar->getScalarType()==pvString) {
            return std::tr1::static_pointer_cast<PVString>(pvField);
        }
    }
    String message("fieldName ");
    message +=  fieldName + " does not have type string ";
    this->message(message, errorMessage);
    return nullPVString;
}

bool NTMatrix::isCompatible(StructureConstPtr const & structure)
{
    if (structure.get() == 0) return false;

    ScalarArrayConstPtr valueField = structure->getField<ScalarArray>("value");
    if (valueField.get() == 0 || valueField->getElementType() != pvDouble)
        return false;

    FieldConstPtr field = structure->getField("dim");
    if (field.get())
    {
        ScalarArrayConstPtr dimField = structure->getField<ScalarArray>("dim");
        if (dimField.get() == 0 || dimField->getElementType() != pvInt)
            return false;
    }

    field = structure->getField("descriptor");
    if (field.get())
    {
        ScalarConstPtr descriptorField = structure->getField<Scalar>("descriptor");
        if (!descriptorField.get() || descriptorField->getScalarType() != pvString)
            return false;
    }

    NTFieldPtr ntField = NTField::get();

    field = structure->getField("alarm");
    if (field.get() && !ntField->isAlarm(field))
        return false;

    field = structure->getField("timeStamp");
    if (field.get() && !ntField->isTimeStamp(field))
        return false;

    field = structure->getField("display");
    if (field.get() && !ntField->isDisplay(field))
        return false;

    return true;
}

bool NTScalar::isCompatible(StructureConstPtr const &structure)
{
    if (structure.get() == 0) return false;

    ScalarConstPtr valueField = structure->getField<Scalar>("value");
    if (valueField.get() == 0)
        return false;

    FieldConstPtr field = structure->getField("descriptor");
    if (field.get())
    {
        ScalarConstPtr descriptorField = structure->getField<Scalar>("descriptor");
        if (!descriptorField.get() || descriptorField->getScalarType() != pvString)
            return false;
    }

    NTFieldPtr ntField = NTField::get();

    field = structure->getField("alarm");
    if (field.get() && !ntField->isAlarm(field))
        return false;

    field = structure->getField("timeStamp");
    if (field.get() && !ntField->isTimeStamp(field))
        return false;

    field = structure->getField("display");
    if (field.get() && !ntField->isDisplay(field))
        return false;

    field = structure->getField("control");
    if (field.get() && !ntField->isControl(field))
        return false;

    return true;
}

void testSerializeFull()
{
	buffer->clear();
	ScalarConstPtr scalarIn = getScalar("field1");
        IntrospectionRegistry::serializeFull(static_pointer_cast<const Field>(scalarIn),buffer,flusher);
	buffer->flip();
        ScalarConstPtr scalarOut = static_pointer_cast<const Scalar>(IntrospectionRegistry::deserializeFull(buffer,control));
	PVField *pvField = pvDataCreate->createPVField(0,scalarOut);
	pvFieldArray.push_back(pvField);
	assert(scalarIn->getFieldName() == scalarOut->getFieldName());
	assert(scalarIn->getType() == scalarOut->getType());

	buffer->clear();
	ScalarArrayConstPtr scalarArrayIn = getScalarArray("fieldArray1");
        IntrospectionRegistry::serializeFull(static_pointer_cast<const Field>(scalarArrayIn),buffer,flusher);
	buffer->flip();
        ScalarArrayConstPtr scalarArrayOut = static_pointer_cast<const ScalarArray>(IntrospectionRegistry::deserializeFull(buffer,control));
	pvField = pvDataCreate->createPVField(0,scalarArrayOut);
	pvFieldArray.push_back(pvField);
	assert(scalarArrayIn->getFieldName() == scalarArrayOut->getFieldName());
	assert(scalarArrayIn->getType() == scalarArrayOut->getType());

	buffer->clear();
	StructureConstPtr structureIn = getStructure("struct1");
        IntrospectionRegistry::serializeFull(static_pointer_cast<const Field>(structureIn),buffer,flusher);
	buffer->flip();
        StructureConstPtr structureOut = static_pointer_cast<const Structure>(IntrospectionRegistry::deserializeFull(buffer,control));
	pvField = pvDataCreate->createPVField(0,structureOut);
	pvFieldArray.push_back(pvField);
	assert(structureIn->getFieldName() == structureOut->getFieldName());
	assert(structureIn->getType() == structureOut->getType());

	buffer->clear();
	StructureArrayConstPtr structureArrayIn = getStructureArray("struct1","structArray1");
        IntrospectionRegistry::serializeFull(static_pointer_cast<const Field>(structureArrayIn),buffer,flusher);
	buffer->flip();
        StructureArrayConstPtr structureArrayOut = static_pointer_cast<const StructureArray>(IntrospectionRegistry::deserializeFull(buffer,control));
	pvField = pvDataCreate->createPVField(0,structureArrayOut);
	pvFieldArray.push_back(pvField);
	assert(structureArrayIn->getFieldName() == structureArrayOut->getFieldName());
	assert(structureArrayIn->getType() == structureArrayOut->getType());
}

void MonitorRequesterImpl::ParseScalar(QString fieldName, PVScalarPtr const & pvs, knobData* kPtr)
{
    QString thisFieldName  = QString::fromStdString(pvs->getFieldName());
    //qDebug() << "ParseScalar -- field/subfield" << fieldName << thisFieldName;
    ScalarConstPtr scalar = pvs->getScalar();
    ScalarType scalarType = scalar->getScalarType();

    switch(scalarType) {
    case pvBoolean: {
        PVBooleanPtr data = static_pointer_cast<PVBoolean>(pvs);

        if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caINT;
            kPtr->edata.ivalue = (int)data->get();
        }
    }
        break;
    case pvByte: {
        PVBytePtr data = static_pointer_cast<PVByte>(pvs);

        if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caCHAR;
            kPtr->edata.ivalue = (int)data->get();
        }
    }
        break;
    case pvShort: {
        PVShortPtr data = static_pointer_cast<PVShort>(pvs);

        if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caINT;
            kPtr->edata.rvalue = data->get();
            kPtr->edata.ivalue = (int)data->get();
        }
    }
        break;
    case pvInt: {
        PVIntPtr data = static_pointer_cast<PVInt>(pvs);

        if(fieldName.contains("alarm") && thisFieldName.contains("severity")) {
            kPtr->edata.severity =(int) data->get();
        } else if(fieldName.contains("alarm") && thisFieldName.contains("status")) {
            kPtr->edata.status =  (int) data->get();


        } if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caINT;
            kPtr->edata.rvalue = data->get();
            kPtr->edata.ivalue = (int)data->get();
        }
    }
        break;
    case pvLong: {
        PVLongPtr data = static_pointer_cast<PVLong>(pvs);

        if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caLONG;
            kPtr->edata.rvalue = data->get();
            kPtr->edata.ivalue = (int64)data->get();
        }
    }
        break;
    case pvFloat: {
        PVFloatPtr data = static_pointer_cast<PVFloat>(pvs);

        if(thisFieldName.contains("value")) {
            kPtr->edata.fieldtype = caFLOAT;
            kPtr->edata.rvalue = data->get();
        }
    }
        break;
    case pvDouble: {
        PVDoublePtr data = static_pointer_cast<PVDouble>(pvs);

        if(fieldName.contains("display") && thisFieldName.contains("limitLow")) {
            kPtr->edata.lower_disp_limit = data->get();
        } else if(fieldName.contains("display") && thisFieldName.contains("limitHigh")) {
            kPtr->edata.upper_disp_limit = data->get();

        } else if(fieldName.contains("control") && thisFieldName.contains("limitLow")) {
            kPtr->edata.lower_ctrl_limit = data->get();
        } else if(fieldName.contains("control") && thisFieldName.contains("limitHigh")) {
            kPtr->edata.upper_ctrl_limit = data->get();

        } else if(fieldName.contains("valueAlarm") && thisFieldName.contains("lowAlarmLimit")) {
            kPtr->edata.lower_alarm_limit = data->get();
        } else if(fieldName.contains("valueAlarm") && thisFieldName.contains("highAlarmLimit")) {
            kPtr->edata.upper_alarm_limit = data->get();

        } else if(fieldName.contains("valueAlarm") && thisFieldName.contains("lowWarningLimit")) {
            kPtr->edata.lower_warning_limit = data->get();
        } else if(fieldName.contains("valueAlarm") && thisFieldName.contains("highWarningLimit")) {
            kPtr->edata.upper_warning_limit = data->get();

            // fill value and type
        } else if(thisFieldName.contains("value")) {
            kPtr->edata.precision = 3;  // for the time beeing, set to 3
            kPtr->edata.fieldtype = caDOUBLE;
            kPtr->edata.rvalue = data->get();
        }
//.........这里部分代码省略.........

StructureConstPtr StandardField::createProperties(String id,FieldConstPtr field,String properties)
{
    bool gotAlarm = false;
    bool gotTimeStamp = false;
    bool gotDisplay = false;
    bool gotControl = false;
    bool gotValueAlarm = false;
    int numProp = 0;
    if(properties.find("alarm")!=String::npos) { gotAlarm = true; numProp++; }
    if(properties.find("timeStamp")!=String::npos) { gotTimeStamp = true; numProp++; }
    if(properties.find("display")!=String::npos) { gotDisplay = true; numProp++; }
    if(properties.find("control")!=String::npos) { gotControl = true; numProp++; }
    if(properties.find("valueAlarm")!=String::npos) { gotValueAlarm = true; numProp++; }
    StructureConstPtr valueAlarm;
    Type type= field->getType();
    while(gotValueAlarm) {
        if(type==epics::pvData::scalar || type==epics::pvData::scalarArray) {
           ScalarType scalarType = (type==epics::pvData::scalar) ?
		static_pointer_cast<const Scalar>(field)->getScalarType() :
		static_pointer_cast<const ScalarArray>(field)->getElementType();
           switch(scalarType) {
               case pvBoolean: valueAlarm = booleanAlarmField; break;
               case pvByte: valueAlarm = byteAlarmField; break;
               case pvShort: valueAlarm = shortAlarmField; break;
               case pvInt: valueAlarm = intAlarmField; break;
               case pvLong: valueAlarm = longAlarmField; break;
               case pvUByte: valueAlarm = ubyteAlarmField; break;
               case pvUShort: valueAlarm = ushortAlarmField; break;
               case pvUInt: valueAlarm = uintAlarmField; break;
               case pvULong: valueAlarm = ulongAlarmField; break;
               case pvFloat: valueAlarm = floatAlarmField; break;
               case pvDouble: valueAlarm = doubleAlarmField; break;
               case pvString:
                throw std::logic_error(String("valueAlarm property not supported for pvString"));
           }
           break;
        }
        if(type==structure) {
            StructureConstPtr structurePtr = static_pointer_cast<const Structure>(field);
            StringArray names = structurePtr->getFieldNames();
            if(names.size()==2) {
                FieldConstPtrArray fields = structurePtr->getFields();
                FieldConstPtr first = fields[0];
                FieldConstPtr second = fields[1];
                String nameFirst = names[0];
                String nameSecond = names[1];
                int compareFirst = nameFirst.compare("index");
                int compareSecond = nameSecond.compare("choices");
                if(compareFirst==0 && compareSecond==0) {
                    if(first->getType()==epics::pvData::scalar
                    && second->getType()==epics::pvData::scalarArray) {
                        ScalarConstPtr scalarFirst = static_pointer_cast<const Scalar>(first);
                        ScalarArrayConstPtr scalarArraySecond = 
                            static_pointer_cast<const ScalarArray>(second);
                        if(scalarFirst->getScalarType()==pvInt
                        && scalarArraySecond->getElementType()==pvString) {
                            valueAlarm = enumeratedAlarmField;
                            break;
                        }
                    }
                }
            }
        }
        throw std::logic_error(String("valueAlarm property for illegal type"));
    }
    size_t numFields = numProp+1;
    FieldConstPtrArray fields(numFields);
    StringArray names(numFields);
    int next = 0;
    names[0] = "value";
    fields[next++] = field;
    if(gotAlarm) {
        names[next] = "alarm";
        fields[next++] = alarmField;
    }
    if(gotTimeStamp) {
        names[next] = "timeStamp";
        fields[next++] = timeStampField;
    }
    if(gotDisplay) {
        names[next] = "display";
        fields[next++] = displayField;
    }
    if(gotControl) {
        names[next] = "control";
        fields[next++] = controlField;
    }
    if(gotValueAlarm) {
        names[next] = "valueAlarm";
        fields[next++] = valueAlarm;
    }
    return fieldCreate->createStructure(id,names,fields);
}