Function iscleared

third-party/lua-5.2.4/src/lgc.c:121–128

** tells whether a key or value can be cleared from a weak ** table. Non-collectable objects are never removed from weak ** tables. Strings behave as `values', so are never removed too. for ** other objects: if really collected, cannot keep them; for objects ** being finalized, keep them in keys, but not in values */

** being finalized, keep them in keys, but not in values
*/
static int iscleared (global_State *g, const TValue *o) {
  if (!iscollectable(o)) return 0;
  else if (ttisstring(o)) {
    markobject(g, rawtsvalue(o));  /* strings are `values', so are never weak */
    return 0;
  }
  else return iswhite(gcvalue(o));
}


/*