lasd/librerie/exercise5/vector/vector.cpp

namespace lasd {

template <typename Data>
Vector<Data>::Vector(const ulong newsize){
  Elements = new Data[newsize]{};
  size = newsize;
}

template <typename Data>
Vector<Data>::Vector(const LinearContainer<Data>& con){
  size = con.Size();
  Elements = new Data[size]{};
  for(ulong i=0; i<size; ++i){
    Elements[i] = con[i];
  }
}

// Copy constructor
template <typename Data>
Vector<Data>::Vector(const Vector<Data>& vec){
  size = vec.size;
  Elements = new Data[size]{};
  for(ulong i=0; i<size; ++i){
    Elements[i] = vec[i];
  }
}

// Move constructor
template <typename Data>
 Vector<Data>::Vector(Vector<Data>&& vec)noexcept{
   std::swap(Elements, vec.Elements);
   std::swap(size, vec.size);
 }

 // Destructor
template <typename Data>
Vector<Data>::~Vector(){
  Clear();
}

// Copy assignment
template <typename Data>
Vector<Data>& Vector<Data>::operator=(const Vector<Data>& vec){
  Vector<Data>* tmpvec = new Vector<Data>(vec);
  std::swap(*tmpvec, *this);
  delete tmpvec;
  return *this;
}

// Move assignment
template <typename Data>
Vector<Data>& Vector<Data>::operator=(Vector<Data>&& vec)noexcept{
  std::swap(Elements,vec.Elements);
  std::swap(size, vec.size);
  return *this;
}

template <typename Data>
bool Vector<Data>::operator==(const Vector<Data>& vec) const noexcept{
  if(size == vec.size){
    for(ulong i=0; i<size; ++i){
      if(Elements[i] != vec.Elements[i])
        return false;
      }
      return true;
  }else{
      return false;
   }
}

template <typename Data>
bool Vector<Data>::operator!=(const Vector<Data>& vec)const noexcept{
  return !(*this == vec);
}

template <typename Data>
void Vector<Data>::Resize(const ulong newsize){
  if(newsize == 0){
    Vector<Data>::Clear(); //Vector<Data>::Clear() instead of Clear() otherwise it'd call the Matrix's implementation.
  }
  else if(size != newsize){
    ulong limit = (size < newsize) ? size : newsize;
    Data* TmpElements = new Data[newsize]{};
    for(ulong i=0; i<limit; ++i){
      std::swap(Elements[i], TmpElements[i]);
    }
    std::swap(Elements, TmpElements);
    size = newsize;
    delete[] TmpElements;
  }
}

template <typename Data>
void Vector<Data>::Clear(){
  delete[] Elements;
  Elements = nullptr;
  size = 0;
}

template <typename Data>
Data& Vector<Data>::Front() const {
  if(size != 0){
    return Elements[0];
  }
  else{
    throw std::length_error("Access to an empty vector!");
  }
}

template <typename Data>
Data& Vector<Data>::Back() const {
  if(size != 0){
    return Elements[size - 1];
  }
  else{
    throw std::length_error("Access to an empty vector!");
  }
}

template <typename Data>
Data& Vector<Data>::operator[](const ulong index) const{
  if(index < size){
    return Elements[index];
  }
  else{
    throw std::out_of_range("Tried to access index " + std::to_string(index) + " but the dimension of the vector is " + std::to_string(size));
  }
}

template <typename Data>
void Vector<Data>::MapPreOrder(const MapFunctor fun, void* par){
  for(ulong i=0; i<size; ++i){
    fun(Elements[i], par);
  }
}

template <typename Data>
void Vector<Data>::MapPostOrder(const MapFunctor fun, void* par){
  ulong index = size;
  while(index > 0){
    fun(Elements[--index], par);
  }
}

template <typename Data>
void Vector<Data>::FoldPreOrder(const FoldFunctor fun, const void* par, void* acc) const{
  for(ulong i=0; i<size; ++i){
    fun(Elements[i], par, acc);
  }
}

template <typename Data>
void Vector<Data>::FoldPostOrder(const FoldFunctor fun, const void* par, void* acc) const{
  ulong idx = size;
  while(idx > 0){
    fun(Elements[--idx], par, acc);
  }
}
}