Create a new creation function for new initialization type.

include/util.h

@@ -115,6 +115,18 @@ libab_result libab_create_function_tree(libab_ref* into,
                                         void (*free_function)(void*),
                                         libab_tree* tree,
                                         libab_ref* scope);
+/**
+ * Allocates a function that uses a given behavior to run.
+ * @param into the reference into which to store the new function.
+ * @param free_function the free function used to free function instances.
+ * @param behavior the behavior that dictates what the function does.
+ * @param scope the scope in which this function was declared.
+ * @return libab_result the result of any necessary allocations.
+ */
+libab_result libab_create_function_behavior(libab_ref* into,
+                                            void (*free_function)(void*),
+                                            libab_behavior* behavior,
+                                            libab_ref* scope);
 /**
  * Creates a function list object, storing it in to the given reference.
  * @param into the reference to store into.

src/util.c

@@ -264,6 +264,34 @@ libab_result libab_create_function_tree(libab_ref* into,
     return result;
 }
 
+libab_result libab_create_function_behavior(libab_ref* into,
+                                            void (*free_function)(void*),
+                                            libab_behavior* behavior,
+                                            libab_ref* scope) {
+    libab_function* new_function;
+    libab_result result = LIBAB_SUCCESS;
+
+    if((new_function = malloc(sizeof(*new_function)))) {
+        result = libab_function_init_behavior(new_function, behavior, scope);
+    } else {
+        result = LIBAB_MALLOC;
+    }
+
+    if(result == LIBAB_SUCCESS) {
+        result = libab_ref_new(into, new_function, free_function);
+        if(result != LIBAB_SUCCESS) {
+            libab_function_free(new_function);
+        }
+    }
+
+    if(result != LIBAB_SUCCESS) {
+        libab_ref_null(into);
+        free(new_function);
+    }
+
+    return result;
+}
+
 libab_result libab_create_function_list(libab_ref* into, libab_ref* type) {
     libab_function_list* list;
     libab_result result = LIBAB_SUCCESS;