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Code style compliance;

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master
Alexander Vdolainen 5 years ago
parent 5a60edd6ef
commit 70072351a2
1 changed files with 203 additions and 200 deletions
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403
lib/redblack.c
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@ -32,19 +32,19 @@ static void redblack_delete(usrtc_t *, usrtc_node_t *);
static void redblack_convert_from_list(usrtc_t *); static void redblack_convert_from_list(usrtc_t *);
usrtc_functions_t usrtc_redblack_fu = { usrtc_functions_t usrtc_redblack_fu = {
redblack_init, redblack_init,
redblack_insert, redblack_insert,
redblack_delete, redblack_delete,
usrtc_tree_lookup, usrtc_tree_lookup,
usrtc_tree_lower_bound, usrtc_tree_lower_bound,
usrtc_tree_upper_bound, usrtc_tree_upper_bound,
usrtc_tree_first, usrtc_tree_first,
usrtc_tree_last, usrtc_tree_last,
usrtc_tree_next, usrtc_tree_next,
usrtc_tree_prev, usrtc_tree_prev,
usrtc_tree_convert_to_list, usrtc_tree_convert_to_list,
redblack_convert_from_list, redblack_convert_from_list,
usrtc_bst usrtc_bst
}; };
/*implementation*/ /*implementation*/
@ -59,251 +59,254 @@ static void redblack_insert(usrtc_t *us, usrtc_node_t *node, const void *key)
usrtc_node_t *parent; usrtc_node_t *parent;
/* simple bt insert */ /* simple bt insert */
usrtc_tree_insert(us,node,key); usrtc_tree_insert(us, node, key);
/* implementation specific insert */ /* implementation specific insert */
node->color = usrtc_red; node->color = usrtc_red;
parent=node->parent; parent = node->parent;
while(parent->color==usrtc_red) { while(parent->color == usrtc_red) {
usrtc_node_t *grandpa=parent->parent; usrtc_node_t *grandpa = parent->parent;
if(parent==grandpa->left) { if(parent == grandpa->left) {
usrtc_node_t *uncle=grandpa->right; usrtc_node_t *uncle = grandpa->right;
if(uncle->color==usrtc_red) { /*red parent->red uncle*/ if(uncle->color == usrtc_red) { /*red parent->red uncle*/
parent->color=usrtc_black; parent->color = usrtc_black;
uncle->color=usrtc_black; uncle->color = usrtc_black;
grandpa->color=usrtc_red; grandpa->color = usrtc_red;
node=grandpa; node = grandpa;
parent=grandpa->parent; parent = grandpa->parent;
} else { /*red parent->black uncle */ } else { /*red parent->black uncle */
if(node==parent->right) { if(node == parent->right) {
usrtc_tree_rotate_left(node,parent); usrtc_tree_rotate_left(node, parent);
parent=node; parent = node;
if(grandpa!=parent->parent) if(grandpa != parent->parent)
return; return;
} }
parent->color=usrtc_black; parent->color = usrtc_black;
grandpa->color=usrtc_red; grandpa->color = usrtc_red;
usrtc_tree_rotate_right(parent,grandpa); usrtc_tree_rotate_right(parent, grandpa);
break; break;
} }
} else { /*ooh,parent == parent->parent->right*/ } else { /* parent == parent->parent->right */
usrtc_node_t *uncle=grandpa->left; usrtc_node_t *uncle = grandpa->left;
if(uncle->color==usrtc_red) { if(uncle->color == usrtc_red) {
parent->color=usrtc_black; parent->color = usrtc_black;
uncle->color=usrtc_black; uncle->color = usrtc_black;
grandpa->color=usrtc_red; grandpa->color = usrtc_red;
node=grandpa; node = grandpa;
parent=grandpa->parent; parent = grandpa->parent;
} else { } else {
if(node==parent->left) { if(node == parent->left) {
usrtc_tree_rotate_right(node,parent); usrtc_tree_rotate_right(node, parent);
parent=node; parent = node;
if(grandpa!=parent->parent) if(grandpa != parent->parent)
return; return;
} }
parent->color=usrtc_black; parent->color = usrtc_black;
grandpa->color=usrtc_red; grandpa->color = usrtc_red;
usrtc_tree_rotate_left(parent,grandpa); usrtc_tree_rotate_left(parent, grandpa);
break; break;
} }
} }
} }
tree_root_priv(us)->color=usrtc_black; tree_root_priv(us)->color = usrtc_black;
} }
static void redblack_delete(usrtc_t *us,usrtc_node_t *node) static void redblack_delete(usrtc_t *us, usrtc_node_t *node)
{ {
usrtc_node_t *swap; usrtc_node_t *swap;
usrtc_node_t *child; usrtc_node_t *child;
usrtc_rb_color_t savecolor; usrtc_rb_color_t savecolor;
/*basic bt delete*/ /*basic bt delete*/
usrtc_tree_delete(us,node,&swap,&child); usrtc_tree_delete(us, node, &swap, &child);
/*implementation specific deletion*/ /*implementation specific deletion*/
savecolor=node->color; savecolor = node->color;
node->color=swap->color; node->color = swap->color;
swap->color=savecolor; swap->color = savecolor;
if(node->color==usrtc_black) { /*black*/ if(node->color == usrtc_black) { /*black*/
usrtc_node_t *parent; usrtc_node_t *parent;
usrtc_node_t *sister; usrtc_node_t *sister;
tree_root_priv(us)->color=usrtc_red; tree_root_priv(us)->color = usrtc_red;
while(child->color==usrtc_black) { while(child->color == usrtc_black) {
parent=child->parent; parent = child->parent;
if(child==parent->left) { if(child == parent->left) {
sister=parent->right; sister = parent->right;
if(sister==tree_null_priv(us)) if(sister == tree_null_priv(us))
return; return;
if(sister->color==usrtc_red) { if(sister->color == usrtc_red) {
sister->color=usrtc_black; sister->color = usrtc_black;
parent->color=usrtc_red; parent->color = usrtc_red;
usrtc_tree_rotate_left(sister,parent); usrtc_tree_rotate_left(sister, parent);
sister=parent->right; sister = parent->right;
if(sister==tree_null_priv(us)) if(sister == tree_null_priv(us))
return; return;
} }
if(sister->left->color==usrtc_black && sister->right->color==usrtc_black) { if((sister->left->color == usrtc_black) &&
sister->color=usrtc_red; (sister->right->color == usrtc_black)) {
child=parent; sister->color = usrtc_red;
} else { child = parent;
if(sister->right->color==usrtc_black) { } else {
if(sister->left->color!=usrtc_red) if(sister->right->color == usrtc_black) {
return; if(sister->left->color != usrtc_red)
return;
sister->left->color=usrtc_black;
sister->color=usrtc_red; sister->left->color = usrtc_black;
usrtc_tree_rotate_right(sister->left,sister); sister->color = usrtc_red;
sister=parent->right; usrtc_tree_rotate_right(sister->left, sister);
sister = parent->right;
if(sister==tree_null_priv(us))
return; if(sister == tree_null_priv(us))
} return;
sister->color=parent->color; }
sister->right->color=usrtc_black; sister->color = parent->color;
parent->color=usrtc_black; sister->right->color = usrtc_black;
usrtc_tree_rotate_left(sister,parent); parent->color = usrtc_black;
break; usrtc_tree_rotate_left(sister, parent);
} break;
}
} else { /*!child == child->parent->right*/ } else { /*!child == child->parent->right*/
if(child!=parent->right) if(child != parent->right)
return; return;
sister=parent->left; sister = parent->left;
if(sister==tree_null_priv(us)) if(sister == tree_null_priv(us))
return; return;
if(sister->color==usrtc_red) { if(sister->color == usrtc_red) {
sister->color=usrtc_black; sister->color = usrtc_black;
parent->color=usrtc_red; parent->color = usrtc_red;
usrtc_tree_rotate_right(sister,parent); usrtc_tree_rotate_right(sister, parent);
sister = parent->left; sister = parent->left;
if(sister==tree_null_priv(us)) if(sister == tree_null_priv(us))
return; return;
} }
if(sister->right->color==usrtc_black && sister->left->color==usrtc_black) { if((sister->right->color == usrtc_black) &&
sister->color=usrtc_red; (sister->left->color == usrtc_black)) {
child=parent; sister->color = usrtc_red;
} else { child = parent;
if(sister->left->color == usrtc_black) { } else {
if(sister->right->color!=usrtc_red) if(sister->left->color == usrtc_black) {
return; if(sister->right->color != usrtc_red)
return;
sister->right->color=usrtc_black;
sister->color=usrtc_red; sister->right->color = usrtc_black;
usrtc_tree_rotate_left(sister->right, sister); sister->color = usrtc_red;
sister=parent->left; usrtc_tree_rotate_left(sister->right, sister);
sister = parent->left;
if(sister==tree_null_priv(us))
return; if(sister == tree_null_priv(us))
} return;
sister->color=parent->color; }
sister->left->color=usrtc_black; sister->color = parent->color;
parent->color=usrtc_black; sister->left->color = usrtc_black;
usrtc_tree_rotate_right(sister,parent); parent->color = usrtc_black;
break; usrtc_tree_rotate_right(sister, parent);
} break;
}
} }
} }
child->color=usrtc_black; child->color = usrtc_black;
tree_root_priv(us)->color=usrtc_black; tree_root_priv(us)->color = usrtc_black;
} }
return;
} }
static void redblack_convert_from_list(usrtc_t *us) static void redblack_convert_from_list(usrtc_t *us)
{ {
usrtc_node_t *tree[TREE_DEPTH_MAX] = { NULL }; usrtc_node_t *tree[TREE_DEPTH_MAX] = { NULL };
usrtc_node_t *curr; usrtc_node_t *curr;
usrtc_node_t *nil=tree_null_priv(us); usrtc_node_t *nil = tree_null_priv(us);
usrtc_node_t *next; usrtc_node_t *next;
usrtc_node_t *complete=NULL; usrtc_node_t *complete = NULL;
usrtc_count_t fullcount=(usrtc_count_t)USRTC_COUNT_T_MAX; usrtc_count_t fullcount = (usrtc_count_t) USRTC_COUNT_T_MAX;
usrtc_count_t nodecount=us->nodecount; usrtc_count_t nodecount = us->nodecount;
usrtc_count_t botrowcount; usrtc_count_t botrowcount;
unsigned int baselevel=0; unsigned int baselevel = 0;
unsigned int level=0; unsigned int level = 0;
unsigned int i; unsigned int i;
if(usrtc_red!=0 && usrtc_black!=1) if((usrtc_red!=0) && (usrtc_black != 1))
return; return;
while(fullcount>=nodecount && fullcount) /*calc*/ while((fullcount >= nodecount) && fullcount) /*calc*/
fullcount >>= 1; fullcount >>= 1;
botrowcount=nodecount-fullcount; botrowcount = nodecount-fullcount;
for(curr=nil->next;curr!=nil;curr=next) { for(curr = nil->next; curr!=nil; curr=next) {
next=curr->next; next=curr->next;
if(complete==NULL && botrowcount--==0) { if((complete == NULL) && (botrowcount-- == 0)) {
baselevel=level=1; baselevel = level = 1;
complete=tree[0]; complete = tree[0];
if(complete!=NULL) { if(complete != NULL) {
tree[0]=NULL; tree[0] = NULL;
complete->right=nil; complete->right = nil;
while(tree[level]!=0) { while(tree[level] != 0) {
tree[level]->right=complete; tree[level]->right = complete;
complete->parent=tree[level]; complete->parent = tree[level];
complete=tree[level]; complete = tree[level];
tree[level++]=NULL; tree[level++] = NULL;
} }
} }
} }
if(complete==NULL) { if(complete == NULL) {
curr->left=nil; curr->left = nil;
curr->right=nil; curr->right = nil;
curr->color=level%2; curr->color = level%2;
complete=curr; complete = curr;
if(level!=baselevel) if(level != baselevel)
return; return;
while(tree[level]!=NULL) { while(tree[level] != NULL) {
tree[level]->right=complete; tree[level]->right = complete;
complete->parent=tree[level]; complete->parent = tree[level];
complete=tree[level]; complete = tree[level];
tree[level++]=NULL; tree[level++] = NULL;
} }
} else { } else {
curr->left=complete; curr->left = complete;
curr->color=(level+1)%2; curr->color = (level + 1)%2;
complete->parent=curr; complete->parent = curr;
tree[level]=curr; tree[level] = curr;
complete=NULL; complete = NULL;
level=baselevel; level = baselevel;
} }
} }
if(complete==NULL) if(complete == NULL)
complete=nil; complete = nil;
for (i=0;i<TREE_DEPTH_MAX;i++) { for (i = 0; i < TREE_DEPTH_MAX; i++) {
if (tree[i]!=NULL) { if (tree[i] != NULL) {
tree[i]->right=complete; tree[i]->right = complete;
complete->parent=tree[i]; complete->parent = tree[i];
complete=tree[i]; complete = tree[i];
} }
} }
nil->right=nil; nil->right = nil;
nil->left=complete; nil->left = complete;
nil->color=usrtc_black; nil->color = usrtc_black;
complete->parent=nil; complete->parent = nil;
complete->color=usrtc_black; complete->color = usrtc_black;
return;
} }

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