-typedef int (*sqlite3_callback)(void *data, int argc, char** argv, char** cols);
-
-/*
- * C calls into us, so we have to have a way to define how the callback
- * arguments have to be marshaled for the userland callback, i.e. from
- * native C types to ZE zvals /and/ how the userland return value has
- * to be marshaled to a native type. All in all, the opposite of function impls.
- */