add initialise and create for the tree structure

Signed-off-by: Mattias Andrée <maandree@operamail.com>

2 files changed, 47 insertions, 1 deletions

diff --git a/src/mds-kbdc/tree.c b/src/mds-kbdc/tree.c
index 45d2ca0..600bf2a 100644
--- a/src/mds-kbdc/tree.c
+++ b/src/mds-kbdc/tree.c
@@ -18,6 +18,37 @@
 #include "tree.h"
 
 #include <stdlib.h>
+#include <string.h>
+
+
+
+/**
+ * Initialise a tree node
+ * 
+ * @param  this  The memory slot for the tree node
+ * @param  type  The type of the node
+ */
+void mds_kbdc_tree_initialise(mds_kbdc_tree_t* restrict this, int type)
+{
+  memset(this, 0, sizeof(mds_kbdc_tree_t));
+  this->type = type;
+}
+
+
+/**
+ * Create a tree node
+ * 
+ * @param   type  The type of the node
+ * @return        The tree node, `NULL` on error
+ */
+mds_kbdc_tree_t* mds_kbdc_tree_create(int type)
+{
+  mds_kbdc_tree_t* this = malloc(sizeof(mds_kbdc_tree_t));
+  if (this == NULL)
+    return NULL;
+  mds_kbdc_tree_initialise(this, type);
+  return this;
+}
 
 
 /**
@@ -127,7 +158,6 @@ static void mds_kbdc_tree_destroy_(mds_kbdc_tree_t* restrict this, int recursive
 }
 
 
-
 /**
  * Release all resources stored in a tree node,
  * without freeing the node itself or freeing
diff --git a/src/mds-kbdc/tree.h b/src/mds-kbdc/tree.h
index ac6ba7e..13a79cb 100644
--- a/src/mds-kbdc/tree.h
+++ b/src/mds-kbdc/tree.h
@@ -646,6 +646,22 @@ union mds_kbdc_tree
 
 
 /**
+ * Initialise a tree node
+ * 
+ * @param  this  The memory slot for the tree node
+ * @param  type  The type of the node
+ */
+void mds_kbdc_tree_initialise(mds_kbdc_tree_t* restrict this, int type);
+
+/**
+ * Create a tree node
+ * 
+ * @param   type  The type of the node
+ * @return        The tree node, `NULL` on error
+ */
+mds_kbdc_tree_t* mds_kbdc_tree_create(int type);
+
+/**
  * Release all resources stored in a tree node,
  * without freeing the node itself or freeing
  * or destroying inner `mds_kbdc_tree_t*`:s