DArrayParam.h

#ifndef UTIL_D_ARRAY_PARAM_H
#define UTIL_D_ARRAY_PARAM_H
 
/*
* Util Package - C++ Utilities for Scientific Computation
*
* Copyright 2010 - 2017, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/
 
#include <util/param/ArrayParam.h> // base class
#include <util/containers/DArray.h>  // member
#include <util/global.h>
 
#include <iomanip> 
 
namespace Util
{
 
   template <typename Type>
   class DArrayParam : public ArrayParam<Type>
   {
 
   public:
 
      DArrayParam(const char *label, DArray<Type>& array, int n, 
                  bool isRequired = true);
 
      void writeParam(std::ostream &out) const;
 
      using ArrayParam<Type>::readParam;
 
   protected:
  
      Type& element(int i)
      {  return (*arrayPtr_)[i]; }
 
      Type const & element(int i) const
      {  return (*arrayPtr_)[i]; }
 
      virtual void readValue(std::istream& in);
 
      virtual void loadValue(Serializable::IArchive& ar);
 
      virtual void saveValue(Serializable::OArchive& ar);
 
      #ifdef UTIL_MPI
      virtual void bcastValue();
      #endif
 
      using ArrayParam<Type>::n;
      
   private:
   
      DArray<Type>* arrayPtr_;
  
   };
 
   /*
   * DArrayParam<Type> constructor.
   */
   template <class Type>
   DArrayParam<Type>::DArrayParam(const char *label, 
                                  DArray<Type>& array, int n, 
                                  bool isRequired)
    : ArrayParam<Type>(label, n, isRequired),
      arrayPtr_(&array)
   {}
 
   /*
   * Write a DArray to a parameter file.
   */
   template <class Type>
   void DArrayParam<Type>::writeParam(std::ostream &out) const
   {
      if (Parameter::isActive()) {
         if (!(arrayPtr_->isAllocated())) {
            UTIL_THROW("Cannot write unallocated DArray");
         }
         if (arrayPtr_->capacity() != n()) {
            UTIL_THROW("Error: DArray capacity != n in writeParam");
         }
         ArrayParam<Type>::writeParam(out);
      }
   }
 
   /*
   * Read array of values from isteam.
   */
   template <class Type>
   void DArrayParam<Type>::readValue(std::istream &in)
   {  
      if (!(arrayPtr_->isAllocated())) {
         UTIL_THROW("Cannot read unallocated DArray");
      }
      if (arrayPtr_->capacity() != n()) {
         UTIL_THROW("Error: DArray capacity < n");
      }
      ArrayParam<Type>::readValue(in);
   }
 
   /*
   * Load a DArray from input archive.
   */
   template <class Type>
   void DArrayParam<Type>::loadValue(Serializable::IArchive& ar)
   {  
      if (!(arrayPtr_->isAllocated())) {
         arrayPtr_->allocate(n());
      }
      ar >> *arrayPtr_;
      if (arrayPtr_->capacity() < n()) {
         UTIL_THROW("Error: DArray capacity < n");
      }
   }
 
   /*
   * Save a DArray to an output archive.
   */
   template <class Type>
   void DArrayParam<Type>::saveValue(Serializable::OArchive& ar)
   {  
      if (!(arrayPtr_->isAllocated())) {
         UTIL_THROW("Cannot save unallocated DArray");
      }
      if (arrayPtr_->capacity() != n()) {
         UTIL_THROW("Error: DArray capacity < n");
      }
      ar << *arrayPtr_;
   }
 
   #ifdef UTIL_MPI
   /*
   * Broadcast a DArray.
   */
   template <class Type>
   void DArrayParam<Type>::bcastValue()
   {  bcast<Type>(ioCommunicator(), *arrayPtr_, n(), 0); }
   #endif
 
} 
#endif