Template for memtx tree

memtx_tree.cc

struct index {};

struct index_vtab {
	void (*build_index)(struct index *);
};

#define bps_declaration \
struct bps_tree { \
	bps_tree_node node; \
};

template <typename T>
struct memtx_index: public index {
#define bps_tree_node T
	bps_declaration
#undef bps_tree_node

	struct bps_tree index;

	static void
	build_index(struct index *p)
	{
		struct memtx_index<T> *index = (struct memtx_index<T> *) p;
	};

	static struct index_vtab vtab;

};

template <typename T>
struct index_vtab memtx_index<T>::vtab = {
	.build_index = memtx_index<T>::build_index
};

struct multikey {};

struct hint {};

enum memtx_index_type { HINT, MULTIKEY };

static struct index *
create_index(enum memtx_index_type type)
{
	switch (type) {
	case HINT:
		return new memtx_index<hint>;
	case MULTIKEY:
		return new memtx_index<multikey>;
	}
}

int main()
{
}