90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*AbstractPVField.cpp*/
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#include <cstddef>
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#include <cstdlib>
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#include <string>
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#include <cstdio>
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#include "pvData.h"
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#include "factory.h"
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namespace epics { namespace pvData {
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class AbstractPVField : public PVField {
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public:
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AbstractPVField(PVStructure *parent,FieldConstPtr field);
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virtual ~AbstractPVField();
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// from Requester
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virtual StringConstPtr getRequesterName() const;
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virtual void message(StringConstPtr message,MessageType messageType) const;
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// from PVField
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virtual void setRequester(Requester *prequester);
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virtual int getFieldOffset() const;
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virtual int getNextFieldOffset() const;
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virtual int getNumberFields() const;
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virtual PVAuxInfo * getPVAuxInfo() const;
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virtual epicsBoolean isImmutable() const;
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virtual void setImmutable();
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virtual FieldConstPtr getField() const;
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virtual PVStructure * getParent() const;
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virtual void replacePVField(PVField * newPVField);
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virtual void renameField(StringConstPtr newName);
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virtual void postPut() const;
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virtual void setPostHandler(PostHandler *ppostHandler);
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virtual void toString(StringPtr buf) const;
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virtual void toString(StringPtr buf,int indentLevel) const;
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protected:
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void replaceStructure();
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private:
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AbstractPVField(AbstractPVField const & ); // not implemented
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AbstractPVField & operator=(AbstractPVField const &); //not implemented
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int fieldOffset;
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int nextFieldOffset;
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PVAuxInfo *pvAuxInfo;
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epicsBoolean immutable;
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PVStructure *parent;
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FieldConstPtr field;
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Requester *requester;
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PostHandler *postHandler;
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};
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AbstractPVField::AbstractPVField(PVStructure *parent,FieldConstPtr field)
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: fieldOffset(0),nextFieldOffset(0),pvAuxInfo(0),immutable(epicsFalse),
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parent(parent),field(field),requester(0),postHandler(0)
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{
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field->incReferenceCount();
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}
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AbstractPVField::~AbstractPVField()
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{
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field->decReferenceCount();
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}
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StringConstPtr AbstractPVField::getRequesterName() const
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{
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static std::string none("none");
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if(requester!=0) return requester->getRequesterName();
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return &none;
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}
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void AbstractPVField::message(StringConstPtr message,MessageType messageType) const
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{
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if(requester) {
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requester->message(message,messageType);
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} else {
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printf("%s %s %s\n",
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messageTypeName[messageType].c_str(),
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field->getFieldName()->c_str(),
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message->c_str());
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}
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}
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void AbstractPVField::setRequester(Requester *prequester)
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{
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static std::string requesterPresent = "Logic Error. requester is already present";
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if(requester==0) {
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requester = prequester;
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return;
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}
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throw std::logic_error(requesterPresent);
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}
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}}
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