StdAllocator.h

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#pragma once
 
#include "Allocator.h"
 
namespace Cogs
{
  namespace Memory
  {
    template<typename T>
    class StdAllocator
    {
    public:
      using value_type = T;
      using pointer = T *;
      using size_type = size_t;
 
      StdAllocator() = default;
      StdAllocator(Allocator * allocator) : allocator(allocator) {}
 
      template<typename U>
      StdAllocator(const StdAllocator<U> & other) : allocator(other.allocator) {}
 
      pointer allocate(size_type n)
      {
        return static_cast<pointer>(allocator->allocate(n * sizeof(T)));
      }
 
      void deallocate(pointer p, size_type n)
      {
        allocator->deallocate(p, n * sizeof(T));
      }
 
    private:
      Allocator * allocator = Allocator::defaultAllocator();
 
      template<typename U> friend class StdAllocator;
    };
  }
}