bool SQTable::NewSlot(const SQObjectPtr &key,const SQObjectPtr &val) { assert(sqi_type(key) != OT_NULL); GC_MUTATED(this); SQHash h = HashObj(key) & (_numofnodes - 1); _HashNode *n = _Get(key, h); if (n) { n->val = val; return false; } _HashNode *mp = &_nodes[h]; n = mp; //key not found I'll insert it //main pos is not free if(sqi_type(mp->key) != OT_NULL) { n = _firstfree; /* get a free place */ SQHash mph = HashObj(mp->key) & (_numofnodes - 1); _HashNode *othern; /* main position of colliding node */ if (mp > n && (othern = &_nodes[mph]) != mp){ /* yes; move colliding node into free position */ while (othern->next != mp){ assert(othern->next != NULL); othern = othern->next; /* find previous */ } othern->next = n; /* redo the chain with `n' in place of `mp' */ n->key = mp->key; n->val = mp->val;/* copy colliding node into free pos. (mp->next also goes) */ n->next = mp->next; mp->key = _null_; mp->val = _null_; mp->next = NULL; /* now `mp' is free */ } else{ /* new node will go into free position */ n->next = mp->next; /* chain new position */ mp->next = n; mp = n; } } mp->key = key; for (;;) { /* correct `firstfree' */ if (sqi_type(_firstfree->key) == OT_NULL && _firstfree->next == NULL) { mp->val = val; _usednodes++; return true; /* OK; table still has a free place */ } else if (_firstfree == _nodes) break; /* cannot decrement from here */ else (_firstfree)--; } Rehash(true); return NewSlot(key, val); }
bool SQTable::Set(const SQObjectPtr &key, const SQObjectPtr &val) { _HashNode *n = _Get(key, HashObj(key) & (_numofnodes - 1)); if (n) { n->val = val; return true; } return false; }
void SQTable::Remove(const SQObjectPtr &key) { _HashNode *n = _Get(key, HashObj(key) & (_numofnodes - 1)); if (n) { n->val = n->key = _null_; _usednodes--; Rehash(false); } }
bool SQTable::Get(const SQObjectPtr &key,SQObjectPtr &val) { if(sqi_type(key) == OT_NULL) return false; _HashNode *n = _Get(key, HashObj(key) & (_numofnodes - 1)); if (n) { _getrealval(n->val, NULL, val); return true; } return false; }