Towards virtual tables.

vtab.go

@@ -0,0 +1,68 @@
+package sqlite3
+
+type Module interface {
+	Connect(db *Conn, arg ...string) (Vtab, error)
+}
+
+type ModuleCreator interface {
+	Module
+	Create(db *Conn, arg ...string) (Vtab, error)
+}
+
+type ModuleShadowNamer interface {
+	Module
+	ShadowName(suffix string) bool
+}
+
+type Vtab interface {
+	BestIndex(*IndexInfo) error
+	Disconnect() error
+	Destroy() error
+	Open() (VtabCursor, error)
+}
+
+type VtabUpdater interface {
+	Vtab
+	Update(arg ...Value) (rowid int64, err error)
+}
+
+type VtabRenamer interface {
+	Vtab
+	Rename(new string) error
+}
+
+type VtabOverloader interface {
+	Vtab
+	FindFunction(arg int, name string) (func(ctx Context, arg ...Value), error)
+}
+
+type VtabChecker interface {
+	Vtab
+	Integrity(schema, table string, flags int) error
+}
+
+type VtabTx interface {
+	Vtab
+	Begin() error
+	Sync() error
+	Commit() error
+	Rollback() error
+}
+
+type VtabSavepointer interface {
+	VtabTx
+	Savepoint(n int) error
+	Release(n int) error
+	RollbackTo(n int) error
+}
+
+type VtabCursor interface {
+	Close() error
+	Filter(idxNum int, idxStr string, arg ...Value)
+	Next() error
+	Eof() bool
+	Column(ctx *Context, n int) error
+	Rowid() (int64, error)
+}
+
+type IndexInfo struct{}