121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
/* pvEnumerated.cpp */
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/**
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* Copyright - See the COPYRIGHT that is included with this distribution.
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* EPICS pvDataCPP is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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*/
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#include <string>
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#include <stdexcept>
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#include <pv/pvType.h>
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#include <pv/pvIntrospect.h>
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#include <pv/pvData.h>
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#include <pv/pvEnumerated.h>
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namespace epics { namespace pvData {
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using std::tr1::static_pointer_cast;
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static String notFound("No enumerated structure found");
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static String notAttached("Not attached to an enumerated structure");
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bool PVEnumerated::attach(PVFieldPtr pvField)
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{
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if(pvField->getField()->getType()!=structure) {
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pvField->message(notFound,errorMessage);
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return false;
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}
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PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvField);
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pvIndex = pvStructure->getIntField("index");
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if(pvIndex.get()==NULL) {
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pvField->message(notFound,errorMessage);
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return false;
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}
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PVScalarArrayPtr pvScalarArray = pvStructure->getScalarArrayField(
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"choices",pvString);
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if(pvScalarArray.get()==NULL) {
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pvIndex.reset();
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pvField->message(notFound,errorMessage);
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return false;
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}
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pvChoices = static_pointer_cast<PVStringArray>(pvScalarArray);
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return true;
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}
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void PVEnumerated::detach()
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{
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pvIndex.reset();
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pvChoices.reset();
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}
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bool PVEnumerated::isAttached() {
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if(pvIndex.get()==NULL) return false;
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return true;
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}
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bool PVEnumerated::setIndex(int32 index)
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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if(pvIndex->isImmutable()) return false;
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pvIndex->put(index);
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return true;
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}
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int32 PVEnumerated::getIndex()
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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return pvIndex->get();
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}
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String PVEnumerated::getChoice()
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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int index = pvIndex->get();
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StringArrayData data;
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pvChoices->get(0,pvChoices->getLength(),data);
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return data.data[index];
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}
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bool PVEnumerated::choicesMutable()
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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return pvChoices->isImmutable();
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}
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StringArray PVEnumerated:: getChoices()
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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StringArrayData data;
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pvChoices->get(0,pvChoices->getLength(),data);
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return data.data;
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}
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int32 PVEnumerated::getNumberChoices()
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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return pvChoices->getLength();
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}
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bool PVEnumerated:: setChoices(StringArray & choices)
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{
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if(pvIndex.get()==NULL ) {
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throw std::logic_error(notAttached);
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}
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if(pvChoices->isImmutable()) return false;
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pvChoices->put(0,choices.size(),get(choices),0);
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return true;
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}
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}}
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