From 67c6d527e52e3a3a27e75f6d41858b8fb97c7338 Mon Sep 17 00:00:00 2001
From: Karl Seguin <k@openmymind.io>
Date: Sat, 17 May 2025 13:13:33 +0800
Subject: [PATCH] Add embedder data to internal node

Add embedder data getter and setter.
---
 include/dom/core/node.h |  3 +++
 src/core/node.c         | 18 ++++++++++++++++++
 src/core/node.h         |  2 ++
 3 files changed, 23 insertions(+)

diff --git a/include/dom/core/node.h b/include/dom/core/node.h
index 90026a10..c7eac8af 100644
--- a/include/dom/core/node.h
+++ b/include/dom/core/node.h
@@ -210,6 +210,9 @@ dom_exception _dom_node_contains(struct dom_node_internal *node,
 #define dom_node_contains(n, o, c) \
 	_dom_node_contains((dom_node_internal *)(n), (dom_node_internal *)(o), (c))
 
+void *_dom_node_get_embedder_data(struct dom_node_internal *node);
+void _dom_node_set_embedder_data(struct dom_node_internal *node, void *data);
+
 /* All the rest are virtual */
 
 static inline dom_exception dom_node_get_node_name(struct dom_node *node,
diff --git a/src/core/node.c b/src/core/node.c
index 014f11ce..87eb265e 100644
--- a/src/core/node.c
+++ b/src/core/node.c
@@ -149,6 +149,7 @@ dom_exception _dom_node_initialise(dom_node_internal *node,
 		dom_string *namespace, dom_string *prefix)
 {
 	node->owner = doc;
+	node->embedder_data = NULL;
 
 	if (name != NULL)
 		node->name = dom_string_ref(name);
@@ -323,6 +324,23 @@ dom_exception _dom_node_contains(struct dom_node_internal *node,
 	return DOM_NO_ERR;
 }
 
+/**
+ * Retrieves the embedders data
+**/
+void *_dom_node_get_embedder_data(struct dom_node_internal *node)
+{
+       assert(node != NULL);
+       return node->embedder_data;
+}
+
+/**
+ * set the embedders data
+**/
+void _dom_node_set_embedder_data(struct dom_node_internal *node, void *data)
+{
+       assert(node != NULL);
+       node->embedder_data = data;
+}
 
 /* ---------------------------------------------------------------------*/
 
diff --git a/src/core/node.h b/src/core/node.h
index ec1cb6d6..6af48ccf 100644
--- a/src/core/node.h
+++ b/src/core/node.h
@@ -76,6 +76,8 @@ struct dom_node_internal {
 	struct list_entry pending_list; /**< The document delete pending list */
 
 	dom_event_target_internal eti;	/**< The EventTarget interface */
+
+	void *embedder_data; /* arbitrary embedders data to associate with this node */
 };
 
 dom_node_internal * _dom_node_create(void);