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Added more functions to tree.

This commit is contained in:
A.G. Lalis 2017-11-13 10:44:53 +01:00
parent cac747f6f6
commit ad7ad7d974
1 changed files with 38 additions and 1 deletions
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39
source/handytree.h
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@ -18,7 +18,8 @@ Please contact the author regarding bugs and/or feature requests.
/*
Tree:
A data structure in which each node has some child nodes, and data about itself. A tree has only one root node, can have a great number of leaf nodes.
A data structure in which each node has some child nodes, and data about itself. A tree has only one root node, can have a great number of leaf nodes. Each node contains some data, and pointers to child
nodes.
*/
/*
@ -45,6 +46,7 @@ TREE_NODE* TEMPLATE(new,TREE_NODE)(TREE_TYPE data, int childNum, ...){
assert(node != NULL);
node->data = data;
node->childCount = childNum;
//If there are children to add, add as many as given.
if (childNum > 0){
va_list args;
va_start(args, childNum);
@ -58,4 +60,39 @@ TREE_NODE* TEMPLATE(new,TREE_NODE)(TREE_TYPE data, int childNum, ...){
return node;
}
/*
Tree node creation: Empty tree node.
Creates a new tree node with no children, just data.
*/
TREE_NODE* TEMPLATE(newEmpty,TREE_NODE)(TREE_TYPE data){
TREE_NODE* node = malloc(sizeof(TREE_NODE));
assert(node != NULL);
node->data = data;
node->childCount = 0;
return node;
}
/*
Free tree node:
Frees a node, and all children of this node.
*/
void TEMPLATE(free,TREE_NODE)(TREE_NODE* node){
for (int i = 0; i < node->childCount; i++){
TEMPLATE(free,TREE_NODE)(node->children[i]);
}
free(node->children);
}
/*
Add node:
Adds a node to a given parent node.
*/
void TEMPLATE(addNode,TREE_NODE)(TREE_NODE* node, TREE_NODE newChild){
node->childCount = node->childCount + 1;
TREE_NODE** oldChildren = node->children;
node->children = malloc(node->childCount * sizeof(TREE_NODE*));
assert(node->children != NULL);
memcpy(node->children, oldChildren, node->)
}
#endif