StlAllocator.hpp

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#ifndef DART_COMMON_STLALLOCATOR_HPP_
#define DART_COMMON_STLALLOCATOR_HPP_
 
#include <memory>
 
#include "dart/common/MemoryAllocator.hpp"
 
namespace dart::common {
 
template <typename T>
class StlAllocator : public std::allocator<T>
{
public:
  // Type aliases
  using Base = std::allocator<T>;
  using value_type = typename std::allocator_traits<Base>::value_type;
  using size_type = typename std::allocator_traits<Base>::size_type;
  using pointer = typename std::allocator_traits<Base>::pointer;
  using const_pointer = typename std::allocator_traits<Base>::const_pointer;
 
  template <typename U>
  struct rebind
  {
    using other = StlAllocator<U>;
  };
 
  explicit StlAllocator(
      MemoryAllocator& baseAllocator = MemoryAllocator::GetDefault()) noexcept;
 
  StlAllocator(const StlAllocator& other) throw();
 
  template <class U>
  StlAllocator(const StlAllocator<U>& other) throw();
 
  ~StlAllocator() = default;
 
  [[nodiscard]] pointer allocate(size_type n, const void* hint = 0);
 
  void deallocate(pointer pointer, size_type n);
  // TODO(JS): Make this constexpr once migrated to C++20
 
  // TODO(JS): Add size_type max_size() const noexcept;
 
  void print(std::ostream& os = std::cout, int indent = 0) const;
 
  template <typename U>
  friend std::ostream& operator<<(
      std::ostream& os, const StlAllocator<U>& allocator);
 
private:
  template <typename U>
  friend class StlAllocator;
  MemoryAllocator& mBaseAllocator;
};
 
} // namespace dart::common
 
#include "dart/common/detail/StlAllocator-impl.hpp"
 
#endif // DART_COMMON_STLALLOCATOR_HPP_