91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/* pvAlarm.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 "pvType.h"
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#include "pvIntrospect.h"
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#include "pvData.h"
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#include "pvAlarm.h"
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namespace epics { namespace pvData {
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static String noAlarmFound("No alarm structure found");
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static String notAttached("Not attached to an alarm structure");
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bool PVAlarm::attach(PVField *pvField)
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{
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PVStructure *pvStructure = 0;
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if(pvField->getField()->getFieldName().compare("alarm")!=0) {
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if(pvField->getField()->getFieldName().compare("value")!=0) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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PVStructure *pvParent = pvField->getParent();
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if(pvParent==0) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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pvStructure = pvParent->getStructureField(String("alarm"));
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if(pvStructure==0) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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} else {
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if(pvField->getField()->getType()!=structure) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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pvStructure = static_cast<PVStructure*>(pvField);
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}
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PVInt *pvInt = pvStructure->getIntField(String("severity"));
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if(pvInt==0) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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PVString *pvString = pvStructure->getStringField(String("message"));
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if(pvInt==0) {
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pvField->message(noAlarmFound,errorMessage);
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return false;
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}
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pvSeverity = pvInt;
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pvMessage = pvString;
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return true;
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}
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void PVAlarm::detach()
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{
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pvSeverity = 0;
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pvMessage = 0;
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}
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bool PVAlarm::isAttached()
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{
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if(pvSeverity==0 || pvMessage==0) return false;
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return true;
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}
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void PVAlarm::get(Alarm & alarm) const
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{
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if(pvSeverity==0 || pvMessage==0) {
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throw std::logic_error(notAttached);
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}
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alarm.setSeverity(AlarmSeverityFunc::getSeverity(pvSeverity->get()));
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alarm.setMessage(pvMessage->get());
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}
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bool PVAlarm::set(Alarm const & alarm)
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{
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if(pvSeverity==0 || pvMessage==0) {
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throw std::logic_error(notAttached);
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}
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if(pvSeverity->isImmutable() || pvMessage->isImmutable()) return false;
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pvSeverity->put(alarm.getSeverity());
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pvMessage->put(alarm.getMessage());
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return true;
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}
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}}
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