commit
593511b2b8
1 changed files with 126 additions and 119 deletions
245
core/set.h
245
core/set.h
|
@ -135,7 +135,6 @@ private:
|
|||
#ifdef GLOBALNIL_DISABLED
|
||||
memdelete_allocator<Element, A>(_nil);
|
||||
#endif
|
||||
//memdelete_allocator<Element,A>(_root);
|
||||
}
|
||||
};
|
||||
|
||||
|
@ -146,6 +145,7 @@ private:
|
|||
ERR_FAIL_COND(p_node == _data._nil && p_color == RED);
|
||||
p_node->color = p_color;
|
||||
}
|
||||
|
||||
inline void _rotate_left(Element *p_node) {
|
||||
|
||||
Element *r = p_node->right;
|
||||
|
@ -194,8 +194,9 @@ private:
|
|||
while (node == node->parent->right) {
|
||||
node = node->parent;
|
||||
}
|
||||
|
||||
if (node->parent == _data._root)
|
||||
return NULL;
|
||||
return NULL; // No successor, as p_node is the last node.
|
||||
return node->parent;
|
||||
}
|
||||
}
|
||||
|
@ -213,11 +214,11 @@ private:
|
|||
} else {
|
||||
|
||||
while (node == node->parent->left) {
|
||||
if (node->parent == _data._root)
|
||||
return NULL;
|
||||
|
||||
node = node->parent;
|
||||
}
|
||||
|
||||
if (node == _data._root)
|
||||
return NULL; // No predecessor, as p_node is the first node.
|
||||
return node->parent;
|
||||
}
|
||||
}
|
||||
|
@ -228,16 +229,15 @@ private:
|
|||
C less;
|
||||
|
||||
while (node != _data._nil) {
|
||||
|
||||
if (less(p_value, node->value))
|
||||
node = node->left;
|
||||
else if (less(node->value, p_value))
|
||||
node = node->right;
|
||||
else
|
||||
break; // found
|
||||
return node; // found
|
||||
}
|
||||
|
||||
return (node != _data._nil) ? node : NULL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
Element *_lower_bound(const T &p_value) const {
|
||||
|
@ -254,21 +254,16 @@ private:
|
|||
else if (less(node->value, p_value))
|
||||
node = node->right;
|
||||
else
|
||||
break; // found
|
||||
return node; // found
|
||||
}
|
||||
|
||||
if (node == _data._nil) {
|
||||
if (prev == NULL)
|
||||
return NULL;
|
||||
if (less(prev->value, p_value)) {
|
||||
if (prev == NULL)
|
||||
return NULL; // tree empty
|
||||
|
||||
prev = prev->_next;
|
||||
}
|
||||
if (less(prev->value, p_value))
|
||||
prev = prev->_next;
|
||||
|
||||
return prev;
|
||||
|
||||
} else
|
||||
return node;
|
||||
return prev;
|
||||
}
|
||||
|
||||
Element *_insert(const T &p_value, bool &r_exists) {
|
||||
|
@ -291,22 +286,21 @@ private:
|
|||
}
|
||||
}
|
||||
|
||||
Element *new_node = memnew_allocator(Element, A);
|
||||
r_exists = false;
|
||||
|
||||
Element *new_node = memnew_allocator(Element, A);
|
||||
new_node->parent = new_parent;
|
||||
new_node->right = _data._nil;
|
||||
new_node->left = _data._nil;
|
||||
new_node->value = p_value;
|
||||
//new_node->data=_data;
|
||||
if (new_parent == _data._root || less(p_value, new_parent->value)) {
|
||||
|
||||
if (new_parent == _data._root || less(p_value, new_parent->value)) {
|
||||
new_parent->left = new_node;
|
||||
} else {
|
||||
new_parent->right = new_node;
|
||||
}
|
||||
|
||||
r_exists = false;
|
||||
|
||||
new_node->_next = _successor(new_node);
|
||||
new_node->_prev = _predecessor(new_node);
|
||||
if (new_node->_next)
|
||||
|
@ -324,154 +318,159 @@ private:
|
|||
if (exists)
|
||||
return new_node;
|
||||
|
||||
Element *node = new_node;
|
||||
_data.size_cache++;
|
||||
Element *node = new_node;
|
||||
Element *nparent = node->parent;
|
||||
Element *ngrand_parent;
|
||||
|
||||
while (node->parent->color == RED) {
|
||||
while (nparent->color == RED) {
|
||||
|
||||
if (node->parent == node->parent->parent->left) {
|
||||
ngrand_parent = nparent->parent;
|
||||
|
||||
Element *aux = node->parent->parent->right;
|
||||
|
||||
if (aux->color == RED) {
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(aux, BLACK);
|
||||
_set_color(node->parent->parent, RED);
|
||||
node = node->parent->parent;
|
||||
if (nparent == ngrand_parent->left) {
|
||||
if (ngrand_parent->right->color == RED) {
|
||||
_set_color(nparent, BLACK);
|
||||
_set_color(ngrand_parent->right, BLACK);
|
||||
_set_color(ngrand_parent, RED);
|
||||
node = ngrand_parent;
|
||||
nparent = node->parent;
|
||||
} else {
|
||||
if (node == node->parent->right) {
|
||||
node = node->parent;
|
||||
_rotate_left(node);
|
||||
if (node == nparent->right) {
|
||||
_rotate_left(nparent);
|
||||
node = nparent;
|
||||
nparent = node->parent;
|
||||
}
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(node->parent->parent, RED);
|
||||
_rotate_right(node->parent->parent);
|
||||
_set_color(nparent, BLACK);
|
||||
_set_color(ngrand_parent, RED);
|
||||
_rotate_right(ngrand_parent);
|
||||
}
|
||||
} else {
|
||||
Element *aux = node->parent->parent->left;
|
||||
|
||||
if (aux->color == RED) {
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(aux, BLACK);
|
||||
_set_color(node->parent->parent, RED);
|
||||
node = node->parent->parent;
|
||||
if (ngrand_parent->left->color == RED) {
|
||||
_set_color(nparent, BLACK);
|
||||
_set_color(ngrand_parent->left, BLACK);
|
||||
_set_color(ngrand_parent, RED);
|
||||
node = ngrand_parent;
|
||||
nparent = node->parent;
|
||||
} else {
|
||||
if (node == node->parent->left) {
|
||||
node = node->parent;
|
||||
_rotate_right(node);
|
||||
if (node == nparent->left) {
|
||||
_rotate_right(nparent);
|
||||
node = nparent;
|
||||
nparent = node->parent;
|
||||
}
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(node->parent->parent, RED);
|
||||
_rotate_left(node->parent->parent);
|
||||
_set_color(nparent, BLACK);
|
||||
_set_color(ngrand_parent, RED);
|
||||
_rotate_left(ngrand_parent);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
_set_color(_data._root->left, BLACK);
|
||||
|
||||
return new_node;
|
||||
}
|
||||
|
||||
void _erase_fix(Element *p_node) {
|
||||
|
||||
Element *root = _data._root->left;
|
||||
Element *node = p_node;
|
||||
Element *node = _data._nil;
|
||||
Element *sibling = p_node;
|
||||
Element *parent = sibling->parent;
|
||||
|
||||
while ((node->color == BLACK) && (root != node)) {
|
||||
if (node == node->parent->left) {
|
||||
Element *aux = node->parent->right;
|
||||
if (aux->color == RED) {
|
||||
_set_color(aux, BLACK);
|
||||
_set_color(node->parent, RED);
|
||||
_rotate_left(node->parent);
|
||||
aux = node->parent->right;
|
||||
}
|
||||
if ((aux->right->color == BLACK) && (aux->left->color == BLACK)) {
|
||||
_set_color(aux, RED);
|
||||
node = node->parent;
|
||||
while (node != root) { // If red node found, will exit at a break
|
||||
if (sibling->color == RED) {
|
||||
_set_color(sibling, BLACK);
|
||||
_set_color(parent, RED);
|
||||
if (sibling == parent->right) {
|
||||
sibling = sibling->left;
|
||||
_rotate_left(parent);
|
||||
} else {
|
||||
if (aux->right->color == BLACK) {
|
||||
_set_color(aux->left, BLACK);
|
||||
_set_color(aux, RED);
|
||||
_rotate_right(aux);
|
||||
aux = node->parent->right;
|
||||
sibling = sibling->right;
|
||||
_rotate_right(parent);
|
||||
}
|
||||
}
|
||||
if ((sibling->left->color == BLACK) && (sibling->right->color == BLACK)) {
|
||||
_set_color(sibling, RED);
|
||||
if (parent->color == RED) {
|
||||
_set_color(parent, BLACK);
|
||||
break;
|
||||
} else { // loop: haven't found any red nodes yet
|
||||
node = parent;
|
||||
parent = node->parent;
|
||||
sibling = (node == parent->left) ? parent->right : parent->left;
|
||||
}
|
||||
} else {
|
||||
if (sibling == parent->right) {
|
||||
if (sibling->right->color == BLACK) {
|
||||
_set_color(sibling->left, BLACK);
|
||||
_set_color(sibling, RED);
|
||||
_rotate_right(sibling);
|
||||
sibling = sibling->parent;
|
||||
}
|
||||
_set_color(aux, node->parent->color);
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(aux->right, BLACK);
|
||||
_rotate_left(node->parent);
|
||||
node = root; /* this is to exit while loop */
|
||||
}
|
||||
} else { /* the code below is has left and right switched from above */
|
||||
Element *aux = node->parent->left;
|
||||
if (aux->color == RED) {
|
||||
_set_color(aux, BLACK);
|
||||
_set_color(node->parent, RED);
|
||||
_rotate_right(node->parent);
|
||||
aux = node->parent->left;
|
||||
}
|
||||
if ((aux->right->color == BLACK) && (aux->left->color == BLACK)) {
|
||||
_set_color(aux, RED);
|
||||
node = node->parent;
|
||||
_set_color(sibling, parent->color);
|
||||
_set_color(parent, BLACK);
|
||||
_set_color(sibling->right, BLACK);
|
||||
_rotate_left(parent);
|
||||
break;
|
||||
} else {
|
||||
if (aux->left->color == BLACK) {
|
||||
_set_color(aux->right, BLACK);
|
||||
_set_color(aux, RED);
|
||||
_rotate_left(aux);
|
||||
aux = node->parent->left;
|
||||
if (sibling->left->color == BLACK) {
|
||||
_set_color(sibling->right, BLACK);
|
||||
_set_color(sibling, RED);
|
||||
_rotate_left(sibling);
|
||||
sibling = sibling->parent;
|
||||
}
|
||||
_set_color(aux, node->parent->color);
|
||||
_set_color(node->parent, BLACK);
|
||||
_set_color(aux->left, BLACK);
|
||||
_rotate_right(node->parent);
|
||||
node = root;
|
||||
|
||||
_set_color(sibling, parent->color);
|
||||
_set_color(parent, BLACK);
|
||||
_set_color(sibling->left, BLACK);
|
||||
_rotate_right(parent);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
_set_color(node, BLACK);
|
||||
|
||||
ERR_FAIL_COND(_data._nil->color != BLACK);
|
||||
}
|
||||
|
||||
void _erase(Element *p_node) {
|
||||
|
||||
Element *rp = ((p_node->left == _data._nil) || (p_node->right == _data._nil)) ? p_node : _successor(p_node);
|
||||
if (!rp)
|
||||
rp = _data._nil;
|
||||
Element *rp = ((p_node->left == _data._nil) || (p_node->right == _data._nil)) ? p_node : p_node->_next;
|
||||
Element *node = (rp->left == _data._nil) ? rp->right : rp->left;
|
||||
node->parent = rp->parent;
|
||||
|
||||
if (_data._root == node->parent) {
|
||||
_data._root->left = node;
|
||||
Element *sibling;
|
||||
if (rp == rp->parent->left) {
|
||||
rp->parent->left = node;
|
||||
sibling = rp->parent->right;
|
||||
} else {
|
||||
if (rp == rp->parent->left) {
|
||||
rp->parent->left = node;
|
||||
} else {
|
||||
rp->parent->right = node;
|
||||
}
|
||||
rp->parent->right = node;
|
||||
sibling = rp->parent->left;
|
||||
}
|
||||
|
||||
if (node->color == RED) {
|
||||
node->parent = rp->parent;
|
||||
_set_color(node, BLACK);
|
||||
} else if (rp->color == BLACK && rp->parent != _data._root) {
|
||||
_erase_fix(sibling);
|
||||
}
|
||||
|
||||
if (rp != p_node) {
|
||||
|
||||
ERR_FAIL_COND(rp == _data._nil);
|
||||
|
||||
if (rp->color == BLACK)
|
||||
_erase_fix(node);
|
||||
|
||||
rp->left = p_node->left;
|
||||
rp->right = p_node->right;
|
||||
rp->parent = p_node->parent;
|
||||
rp->color = p_node->color;
|
||||
p_node->left->parent = rp;
|
||||
p_node->right->parent = rp;
|
||||
if (p_node->left != _data._nil)
|
||||
p_node->left->parent = rp;
|
||||
if (p_node->right != _data._nil)
|
||||
p_node->right->parent = rp;
|
||||
|
||||
if (p_node == p_node->parent->left) {
|
||||
p_node->parent->left = rp;
|
||||
} else {
|
||||
p_node->parent->right = rp;
|
||||
}
|
||||
} else {
|
||||
if (p_node->color == BLACK)
|
||||
_erase_fix(node);
|
||||
}
|
||||
|
||||
if (p_node->_next)
|
||||
|
@ -529,6 +528,7 @@ public:
|
|||
|
||||
if (!_data._root)
|
||||
return NULL;
|
||||
|
||||
Element *res = _find(p_value);
|
||||
return res;
|
||||
}
|
||||
|
@ -549,8 +549,9 @@ public:
|
|||
|
||||
void erase(Element *p_element) {
|
||||
|
||||
if (!_data._root)
|
||||
if (!_data._root || !p_element)
|
||||
return;
|
||||
|
||||
_erase(p_element);
|
||||
if (_data.size_cache == 0 && _data._root)
|
||||
_data._free_root();
|
||||
|
@ -560,9 +561,11 @@ public:
|
|||
|
||||
if (!_data._root)
|
||||
return false;
|
||||
|
||||
Element *e = find(p_value);
|
||||
if (!e)
|
||||
return false;
|
||||
|
||||
_erase(e);
|
||||
if (_data.size_cache == 0 && _data._root)
|
||||
_data._free_root();
|
||||
|
@ -573,6 +576,7 @@ public:
|
|||
|
||||
if (!_data._root)
|
||||
return NULL;
|
||||
|
||||
Element *e = _data._root->left;
|
||||
if (e == _data._nil)
|
||||
return NULL;
|
||||
|
@ -587,6 +591,7 @@ public:
|
|||
|
||||
if (!_data._root)
|
||||
return NULL;
|
||||
|
||||
Element *e = _data._root->left;
|
||||
if (e == _data._nil)
|
||||
return NULL;
|
||||
|
@ -603,10 +608,12 @@ public:
|
|||
}
|
||||
|
||||
inline int size() const { return _data.size_cache; }
|
||||
|
||||
int calculate_depth() const {
|
||||
// used for debug mostly
|
||||
if (!_data._root)
|
||||
return 0;
|
||||
|
||||
int max_d = 0;
|
||||
_calculate_depth(_data._root->left, max_d, 0);
|
||||
return max_d;
|
||||
|
@ -620,7 +627,6 @@ public:
|
|||
_cleanup_tree(_data._root->left);
|
||||
_data._root->left = _data._nil;
|
||||
_data.size_cache = 0;
|
||||
_data._nil->parent = _data._nil;
|
||||
_data._free_root();
|
||||
}
|
||||
|
||||
|
@ -633,6 +639,7 @@ public:
|
|||
|
||||
_copy_from(p_set);
|
||||
}
|
||||
|
||||
_FORCE_INLINE_ Set() {
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue