C++ StructureConstPtr::getFields方法代码示例

void test_structure()
{
    testDiag("Test test_structure()");

    FieldCreatePtr fieldCreate = getFieldCreate();
    FieldBuilderPtr fb = fieldCreate->createFieldBuilder();
    
    // test with simple (non-nested) structure
    string ID = "testStructureID";
    StructureConstPtr s = fb->setId(ID)->
                         add("double", pvDouble)->
                         addArray("intArray", pvInt)->
                         createStructure();
    testOk1(s.get() != 0);
    testOk1(ID == s->getID());
    testOk1(2 == s->getFields().size());
    
    FieldConstPtr f0 = s->getField(0);
    testOk1(scalar == f0->getType());
    testOk1("double" == s->getFieldName(0));
    testOk(pvDouble == static_pointer_cast<const Scalar>(f0)->getScalarType(), "f0 scalar type == double");

    FieldConstPtr f1 = s->getField(1);
    testOk1(scalarArray == f1->getType());
    testOk1("intArray" == s->getFieldName(1));
    testOk(pvInt == static_pointer_cast<const ScalarArray>(f1)->getElementType(), "f1 element type == int");
    
    // test reuse with empty structure
    StructureConstPtr emptyStructure = fb->createStructure();
    testOk1(emptyStructure.get() != 0);
    testOk1(Structure::DEFAULT_ID == emptyStructure->getID());
    testOk1(0 == emptyStructure->getFields().size());
    
    // test add/addArray with Field
    StructureConstPtr s2 = fb->add("s", s)->
                            addArray("sArray", s)->
                            createStructure();
    testOk1(s2.get()!=0);
    testOk1(Structure::DEFAULT_ID == s2->getID());
    testOk1(2 == s2->getFields().size());

    f0 = s2->getField(0);
    testOk1(structure == f0->getType());
    testOk1("s" == s2->getFieldName(0));
    testOk1(s.get() == f0.get());

    f1 = s2->getField(1);
    testOk1(structureArray == f1->getType());
    testOk1("sArray" == s2->getFieldName(1));
    testOk(s.get() == static_pointer_cast<const StructureArray>(f1)->getStructure().get(), "array element is given structure");
}

void test_nestedStructureArray()
{
    testDiag("Test test_nestedStructureArray()");

    FieldCreatePtr fieldCreate = getFieldCreate();
    
    string NESTED_ID = "nestedID";
    StructureConstPtr s = fieldCreate->createFieldBuilder()->
                            add("double", pvDouble)->
                            addNestedStructureArray("nested")->
                                setId(NESTED_ID)->
                                add("short", pvShort)->
                                add("long", pvLong)->
                                endNested()->
                            addArray("intArray", pvInt)->
                            createStructure();
    testOk1(s.get() != 0);
    testOk1(Structure::DEFAULT_ID == s->getID());
    testOk1(3 == s->getFields().size());

    FieldConstPtr f0 = s->getField(0);
    testOk1(scalar == f0->getType());
    testOk1("double" == s->getFieldName(0));
    testOk(pvDouble == static_pointer_cast<const Scalar>(f0)->getScalarType(), "f0 scalar type == double");

    FieldConstPtr f1 = s->getField(1);
    testOk1(structureArray == f1->getType());
    testOk1("nested" == s->getFieldName(1));

    {
        StructureConstPtr s2 = static_pointer_cast<const StructureArray>(f1)->getStructure();
        
        testOk1(s2.get() != 0);
        testOk1(NESTED_ID == s2->getID());
        testOk1(2 == s2->getFields().size());
        
        FieldConstPtr f20 = s2->getField(0);
        testOk1(scalar == f20->getType());
        testOk1("short" == s2->getFieldName(0));
        testOk(pvShort == static_pointer_cast<const Scalar>(f20)->getScalarType(), "f20 scalar type == short");
    
        FieldConstPtr f21 = s2->getField(1);
        testOk1(scalar == f21->getType());
        testOk1("long" == s2->getFieldName(1));
        testOk(pvLong == static_pointer_cast<const Scalar>(f21)->getScalarType(), "f21 element type == long");
        
    }

    FieldConstPtr f2 = s->getField(2);
    testOk1(scalarArray == f2->getType());
    testOk1("intArray" == s->getFieldName(2));
    testOk(pvInt == static_pointer_cast<const ScalarArray>(f2)->getElementType(), "f2 element type == int");

}	

void test_arraySizeTypes()
{
    testDiag("Test test_arraySizeTypes()");

    FieldCreatePtr fieldCreate = getFieldCreate();

    StructureConstPtr s = fieldCreate->createFieldBuilder()->
                            addArray("variableArray", pvDouble)->
                            addFixedArray("fixedArray", pvDouble, 10)->
                            addBoundedArray("boundedArray", pvDouble, 1024)->
                            createStructure();
    testOk1(s.get() != 0);
    testOk1(Structure::DEFAULT_ID == s->getID());
    testOk1(3 == s->getFields().size());
}

StructureConstPtr FieldCreate::appendField(
    StructureConstPtr const & structure,
    string const & fieldName,
    FieldConstPtr const & field) const
{
    StringArray oldNames = structure->getFieldNames();
    FieldConstPtrArray oldFields = structure->getFields();
    size_t oldLen = oldNames.size();
    StringArray newNames(oldLen+1);
    FieldConstPtrArray newFields(oldLen+1);
    for(size_t i = 0; i<oldLen; i++) {
        newNames[i] = oldNames[i];
        newFields[i] = oldFields[i];
    }
    newNames[oldLen] = fieldName;
    newFields[oldLen] = field;
    return createStructure(structure->getID(),newNames,newFields);
}

PVStructure::PVStructure(StructureConstPtr const & structurePtr)
: PVField(structurePtr),
  structurePtr(structurePtr),
  extendsStructureName("")
{
    size_t numberFields = structurePtr->getNumberFields();
    FieldConstPtrArray fields = structurePtr->getFields();
    StringArray fieldNames = structurePtr->getFieldNames();
//    PVFieldPtrArray * xxx = const_cast<PVFieldPtrArray *>(&pvFields);
    pvFields.reserve(numberFields);
    PVDataCreatePtr pvDataCreate = getPVDataCreate();
    for(size_t i=0; i<numberFields; i++) {
    	pvFields.push_back(pvDataCreate->createPVField(fields[i]));
    }
    for(size_t i=0; i<numberFields; i++) {
    	pvFields[i]->setParentAndName(this,fieldNames[i]);
    }
}

StructureConstPtr FieldCreate::appendFields(
    StructureConstPtr const & structure,
    StringArray const & fieldNames,
    FieldConstPtrArray const & fields) const
{
    StringArray oldNames = structure->getFieldNames();
    FieldConstPtrArray oldFields = structure->getFields();
    size_t oldLen = oldNames.size();
    size_t extra = fieldNames.size();
    StringArray newNames(oldLen+extra);
    FieldConstPtrArray newFields(oldLen+extra);
    for(size_t i = 0; i<oldLen; i++) {
        newNames[i] = oldNames[i];
        newFields[i] = oldFields[i];
    }
    for(size_t i = 0; i<extra; i++) {
        newNames[oldLen +i] = fieldNames[i];
        newFields[oldLen +i] = fields[i];
    }
    return createStructure(structure->getID(),newNames,newFields);
}

void PVStructure::fixParentStructure()
{
    PVStructure *parent = getParent();
    if(parent==NULL) return;
    StructureConstPtr parentStructure = parent->structurePtr;
    String fieldName = getFieldName();
    size_t index = parentStructure->getFieldIndex(fieldName);
    StringArray const &fieldNames = parentStructure->getFieldNames();
    size_t num = fieldNames.size();
    FieldConstPtrArray fields(num);
    FieldConstPtrArray const & oldFields = parentStructure->getFields();
    for(size_t i=0; i< num; i++) {
        if(i==index) {
            fields[i] = structurePtr;
        } else {
            fields[i] = oldFields[i];
        }
    }
    FieldConstPtr field = getFieldCreate()->createStructure(
        parentStructure->getID(),fieldNames,fields);
    parent->replaceField(field);
    parent->fixParentStructure();
}

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);
}