1 files changed, 55 insertions, 0 deletions
diff --git a/Algorithms/bplus-tree/src/bplus_node.h b/Algorithms/bplus-tree/src/bplus_node.h
new file mode 100644
index 0000000..83a4d9a
--- /dev/null
+++ b/Algorithms/bplus-tree/src/bplus_node.h
@@ -0,0 +1,55 @@
+/**
+ * Distributed under the Boost Software License, Version 1.0.
+ * See accompanying file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt
+ */
+
+#ifndef __BPLUS_NODE_H__
+#define __BPLUS_NODE_H__
+
+#include "bplus_tree_private.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // ifdef __cplusplus
+
+struct _BplusNode
+{
+    size_t    length;
+    BplusItem items[BPLUS_TREE_ORDER];
+
+    uint8_t    is_leaf;
+    BplusNode* parent;
+};
+
+#define bplus_key_gt(bplus_tree_m, k1, k2)  ((k1) > (k2))
+#define bplus_key_gte(bplus_tree_m, k1, k2) ((k1) >= (k2))
+#define bplus_key_lt(bplus_tree_m, k1, k2)  ((k1) < (k2))
+#define bplus_key_lte(bplus_tree_m, k1, k2) ((k1) <= (k2))
+#define bplus_key_eq(bplus_tree_m, k1, k2)  ((k1) == (k2))
+#define bplus_key_neq(bplus_tree_m, k1, k2) ((k1) != (k2))
+
+#define bplus_key_at(node_m, index_m)   (((BplusNode*) node_m)->items[(index_m)].key)
+#define bplus_key_first(node_m)         bplus_key_at(node_m, 0)
+#define bplus_key_last(node_m)          bplus_key_at(node_m, (node_m)->length - 1)
+#define bplus_value_at(node_m, index_m) (((BplusNode*) node_m)->items[(index_m)].value)
+#define bplus_value_first(node_m)       bplus_value_at(node_m, 0)
+#define bplus_value_last(node_m)        bplus_value_at(node_m, (node_m)->length - 1)
+#define bplus_node_at(node_m, index_m)  ((BplusNode*) bplus_value_at(node_m, index_m))
+#define bplus_node_first(node_m)        ((BplusNode*) bplus_value_first(node_m))
+#define bplus_node_last(node_m)         ((BplusNode*) bplus_value_last(node_m))
+
+#define bplus_node_overfilled(node_m)  ((node_m)->length > (BPLUS_TREE_ORDER - 1))
+#define bplus_node_underfilled(node_m) ((node_m)->length <= 1)
+
+BplusNode* bplus_node_new(BplusTree* tree);
+BplusNode* bplus_node_new_right(BplusTree* tree, BplusNode* node_left);
+void       bplus_node_destroy(BplusTree* tree, BplusNode* node);
+void       bplus_node_init(BplusNode* node, gboolean is_leaf);
+void       bplus_node_move_and_resize_data(BplusTree const* tree, BplusNode* node, size_t const index_to, size_t const index_from);
+
+#ifdef __cplusplus
+}
+#endif // ifdef __cplusplus
+
+#endif // ifndef __BPLUS_NODE_H__