DoocsBackendStringRegisterAccessor.h

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/*
 * DoocsBackendStringRegisterAccessor.h
 *
 *  Created on: May 3, 2016
 *      Author: Martin Hierholzer
 */
 
#ifndef MTCA4U_DOOCS_BACKEND_STRING_REGISTER_ACCESSOR_H
#define MTCA4U_DOOCS_BACKEND_STRING_REGISTER_ACCESSOR_H
 
#include "DoocsBackendRegisterAccessor.h"
#include <doocs/EqCall.h>
#include <type_traits>
 
namespace ChimeraTK {
 
  template<typename UserType>
  class DoocsBackendStringRegisterAccessor : public DoocsBackendRegisterAccessor<UserType> {
   public:
    virtual ~DoocsBackendStringRegisterAccessor();
 
   protected:
    DoocsBackendStringRegisterAccessor(boost::shared_ptr<DoocsBackend> backend, const std::string& path,
        const std::string& registerPathName, size_t numberOfWords, size_t wordOffsetInRegister, AccessModeFlags flags);
 
    void doPostRead(TransferType type, bool hasNewData) override;
 
    void doPreWrite(TransferType type, VersionNumber version) override;
 
    friend class DoocsBackend;
  };
 
  /**********************************************************************************************************************/
 
  template<typename UserType>
  DoocsBackendStringRegisterAccessor<UserType>::DoocsBackendStringRegisterAccessor(
      boost::shared_ptr<DoocsBackend> backend, const std::string& path, const std::string& registerPathName,
      size_t numberOfWords, size_t wordOffsetInRegister, AccessModeFlags flags)
  : DoocsBackendRegisterAccessor<UserType>(
        backend, path, registerPathName, numberOfWords, wordOffsetInRegister, flags) {
    // check UserType
    if(typeid(UserType) != typeid(std::string)) {
      this->shutdown();
      throw ChimeraTK::logic_error("Trying to access a string DOOCS property with a non-string user data type.");
    }
    // check data type
    if(DoocsBackendRegisterAccessor<UserType>::src.type() != DATA_TEXT &&
        DoocsBackendRegisterAccessor<UserType>::src.type() != DATA_STRING) {
      this->shutdown();
      throw ChimeraTK::logic_error(std::string("DOOCS data type ") +
          std::to_string(DoocsBackendRegisterAccessor<UserType>::dst.type()) +
          " not supported by DoocsBackendStringRegisterAccessor."); // LCOV_EXCL_LINE (already prevented in the Backend)
    }
  }
 
  /**********************************************************************************************************************/
 
  template<typename UserType>
  DoocsBackendStringRegisterAccessor<UserType>::~DoocsBackendStringRegisterAccessor() {
    this->shutdown();
  }
 
  /**********************************************************************************************************************/
 
  template<>
  void DoocsBackendStringRegisterAccessor<std::string>::doPostRead(TransferType type, bool hasNewData) {
    DoocsBackendRegisterAccessor<std::string>::doPostRead(type, hasNewData);
    if(!hasNewData) return;
 
    // copy data into our buffer
    NDRegisterAccessor<std::string>::buffer_2D[0][0] = DoocsBackendRegisterAccessor<std::string>::dst.get_string();
  }
 
  /**********************************************************************************************************************/
 
  template<>
  void DoocsBackendStringRegisterAccessor<std::string>::doPreWrite(TransferType type, VersionNumber version) {
    DoocsBackendRegisterAccessor<std::string>::doPreWrite(type, version);
 
    // copy data into our buffer
    DoocsBackendRegisterAccessor<std::string>::src.set(NDRegisterAccessor<std::string>::buffer_2D[0][0].c_str());
  }
 
  /**********************************************************************************************************************/
 
  template<typename UserType>
  void DoocsBackendStringRegisterAccessor<UserType>::doPostRead(
      TransferType, bool) { // LCOV_EXCL_LINE (already prevented in constructor)
    throw ChimeraTK::logic_error("Trying to access a string DOOCS property with a non-string user data "
                                 "type."); // LCOV_EXCL_LINE
  }                                        // LCOV_EXCL_LINE
 
  /**********************************************************************************************************************/
 
  template<typename UserType>
  void DoocsBackendStringRegisterAccessor<UserType>::doPreWrite(
      TransferType, VersionNumber) { // LCOV_EXCL_LINE (already prevented in constructor)
    throw ChimeraTK::logic_error("Trying to access a string DOOCS property with a non-string user data "
                                 "type."); // LCOV_EXCL_LINE
  }                                        // LCOV_EXCL_LINE
 
} // namespace ChimeraTK
 
#endif /* MTCA4U_DOOCS_BACKEND_STRING_REGISTER_ACCESSOR_H */