Class CustomTable

src/util/custom-table.cpp:1–350

class CustomTable {
public:

	explicit CustomTable(
		Napi::Env env,
		Database* db,
		const char* name,
		Napi::Function factory
	) :
		addon(db->GetAddon()),
		env(env),
		db(db),
		name(name),
		factory(Napi::Persistent(factory)) {}

	static void Destructor(void* self) {
		delete static_cast<CustomTable*>(self);
	}

	static sqlite3_module MODULE;
	static sqlite3_module EPONYMOUS_MODULE;

private:

	// This nested class is instantiated on each CREATE VIRTUAL TABLE statement.
	class VTab { friend class CustomTable;
		explicit VTab(
			CustomTable* parent,
			Napi::Function generator,
			std::vector<std::string> parameter_names,
			bool safe_ints
		) :
			parent(parent),
			parameter_count(parameter_names.size()),
			safe_ints(safe_ints),
			generator(Napi::Persistent(generator)),
			parameter_names(parameter_names) {
			((void)base);
		}

		static inline CustomTable::VTab* Upcast(sqlite3_vtab* vtab) {
			return reinterpret_cast<VTab*>(vtab);
		}

		inline sqlite3_vtab* Downcast() {
			return reinterpret_cast<sqlite3_vtab*>(this);
		}

		sqlite3_vtab base;
		CustomTable * const parent;
		const int parameter_count;
		const bool safe_ints;
		const Napi::FunctionReference generator;
		const std::vector<std::string> parameter_names;
	};

	// This nested class is instantiated each time a virtual table is scanned.
	class Cursor { friend class CustomTable;
		static inline CustomTable::Cursor* Upcast(sqlite3_vtab_cursor* cursor) {
			return reinterpret_cast<Cursor*>(cursor);