StreamIterator.h

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#pragma once
#include <scl/stream/details/deprecation.h>
#include <scl/stream/details/payload.h>
#include <scl/macros.h>

namespace scl{
    namespace stream{
        namespace details{
            namespace iterator{
                template <class>
                class StlAdapter;

                template <class T>
                class StreamIterator{
                    static_assert(!META::is_void<T>(), "Cannot make a StreamIterator<void>");
                    static_require(scl::concepts::Copyable<T>{});

                    public:
                        using payload_type = StreamIteratorPayload<T>;

                        using value_type = typename payload_type::value_type;

                        virtual bool hasNext() const = 0;

                        virtual payload_type next() = 0;

                        virtual StlAdapter<T> begin(){
                            return StlAdapter<T>{this};
                        }

                        virtual StlAdapter<T> end(){
                            return StlAdapter<T>{};
                        }
                };
            }
        }
    }
}