libvieter/src/tree/node.c

#include "node.h"

vieter_tree_node *vieter_tree_node_init() {
  return calloc(1, sizeof(vieter_tree_node));
}

vieter_tree_error vieter_tree_node_insert(vieter_tree_node *node, uint64_t key,
                                          void *data) {
  vieter_tree_node *parent = node;

  while (node != NULL) {
    if (node->key == key) {
      return vieter_tree_already_present;
    }

    parent = node;

    if (key < node->key) {
      node = parent->left;
    } else {
      node = parent->right;
    }
  }

  vieter_tree_node *new_node = vieter_tree_node_init();
  new_node->key = key;
  new_node->data = data;
  new_node->parent = parent;

  if (key < node->key) {
    parent->left = new_node;
  } else {
    parent->right = new_node;
  }

  return vieter_tree_ok;
}

vieter_tree_error vieter_tree_node_search(void **out, vieter_tree_node *node,
                                          uint64_t key) {
  while (node != NULL) {
    if (node->key == key) {
      *out = node->data;

      return vieter_tree_ok;
    }

    if (key < node->key) {
      node = node->left;
    } else {
      node = node->right;
    }
  }

  return vieter_tree_not_present;
}

vieter_tree_error vieter_tree_node_remove(void **out, vieter_tree_node *node,
                                          uint64_t key) {
  return vieter_tree_not_present;
}