Function recoverPageIsUsed

modules/dasSQLITE/sqlite/shell.c:14119–14128

** Implementation of SQL scalar function "page_is_used". This function ** is used as part of the procedure for locating orphan rows for the ** lost-and-found table, and it depends on those routines having populated ** the sqlite3_recover.laf.pUsed variable. ** ** The only argument to this function is a page-number. It returns true ** if the page has already been used somehow during data recovery,

**     SELECT page_is_used(<pgno>);
*/
static void recoverPageIsUsed(
  sqlite3_context *pCtx,
  int nArg,
  sqlite3_value **apArg
){
  sqlite3_recover *p = (sqlite3_recover*)sqlite3_user_data(pCtx);
  i64 pgno = sqlite3_value_int64(apArg[0]);
  assert( nArg==1 );
  sqlite3_result_int(pCtx, recoverBitmapQuery(p->laf.pUsed, pgno));
}

/*
** The implementation of a user-defined SQL function invoked by the