G4FastVector.hh

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//
// G4FastVector
//
// Class description:
//
// Template class defining a vector of pointers,
// not performing boundary checking.
 
// Author: G.Cosmo, 2 December 1995
//         First implementation, based on object model
// --------------------------------------------------------------------
#ifndef G4FastVector_hh
#define G4FastVector_hh 1
 
#include "globals.hh"
 
template <class Type, G4int N>
class G4FastVector
{
 public:
  G4FastVector() { ptr = &theArray[0]; }
 
  ~G4FastVector()
  {
    if(ptr != &theArray[0])
      delete[] ptr;
  }
 
  inline Type* operator[](G4int anIndex) const
  //  Access operator to the array.
  {
    return ptr[anIndex];
  }
 
  inline void Initialize(G4int items)
  //  Normally the pointer ptr points to the stack-array
  //  theArray; only when the number of items is greater
  //  than N, memory is allocated dynamically.
  {
    if(ptr != &theArray[0])
      delete[] ptr;
    if(items > N)
      ptr = new Type*[items];
    else
      ptr = &theArray[0];
  }
 
  inline void SetElement(G4int anIndex, Type* anElement)
  //  To insert an element at the given position inside
  //  the vector.
  {
    ptr[anIndex] = anElement;
  }
 
 private:
  Type* theArray[N];
  Type** ptr;
};
 
#endif