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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static String notStructure("field is not a structure");
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static String notEnumerated("field is not an enumerated structure");
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static String notAttached("Not attached to an enumerated structure");
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bool PVEnumerated::attach(PVField *pvField)
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{
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if(pvField->getField()->getType()!=structure) {
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pvField->message(notStructure,errorMessage);
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return false;
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}
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PVStructure *pvStructure = static_cast<PVStructure*>(pvField);
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PVInt *pvInt = pvStructure->getIntField(String("index"));
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if(pvInt==0) {
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pvField->message(notEnumerated,errorMessage);
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return false;
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}
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PVScalarArray *pvScalarArray = pvStructure->getScalarArrayField(
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String("choices"),pvString);
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if(pvScalarArray==0) {
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pvField->message(notEnumerated,errorMessage);
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return false;
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}
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pvIndex = pvInt;
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pvChoices = static_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 = 0;
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pvChoices = 0;
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}
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bool PVEnumerated::isAttached() {
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if(pvIndex==0 || pvChoices==0) 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==0 || pvChoices==0) {
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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==0 || pvChoices==0) {
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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==0 || pvChoices==0) {
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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==0 || pvChoices==0) {
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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==0 || pvChoices==0) {
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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==0 || pvChoices==0) {
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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,int32 numberChoices)
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{
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if(pvIndex==0 || pvChoices==0) {
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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,numberChoices,choices,0);
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return true;
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}
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}}
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