From 93843bd2fe8c91fe9e659c5b801f1a7d672dc223 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 10 Jan 2016 23:35:33 -0800
Subject: Added cmark_node_replace(oldnode, newnode).

API change.

I've found in using the API that this is very often
wanted.
---
 src/cmark.h | 5 +++++
 src/node.c  | 9 +++++++++
 2 files changed, 14 insertions(+)

(limited to 'src')

diff --git a/src/cmark.h b/src/cmark.h
index 5f9f294..6b5c385 100644
--- a/src/cmark.h
+++ b/src/cmark.h
@@ -387,6 +387,11 @@ CMARK_EXPORT int cmark_node_insert_before(cmark_node *node,
  */
 CMARK_EXPORT int cmark_node_insert_after(cmark_node *node, cmark_node *sibling);
 
+/** Replaces 'oldnode' with 'newnode' and frees the memory used by 'oldnode'.
+ * Returns 1 on success, 0 on failure.
+ */
+CMARK_EXPORT int cmark_node_replace(cmark_node *oldnode, cmark_node *newnode);
+
 /** Adds 'child' to the beginning of the children of 'node'.
  * Returns 1 on success, 0 on failure.
  */
diff --git a/src/node.c b/src/node.c
index ce7f80c..0fd5573 100644
--- a/src/node.c
+++ b/src/node.c
@@ -730,6 +730,15 @@ int cmark_node_insert_after(cmark_node *node, cmark_node *sibling) {
   return 1;
 }
 
+int cmark_node_replace(cmark_node *oldnode, cmark_node *newnode) {
+  if (!cmark_node_insert_before(oldnode, newnode)) {
+    return 0;
+  }
+  cmark_node_unlink(oldnode);
+  cmark_node_free(oldnode);
+  return 1;
+}
+
 int cmark_node_prepend_child(cmark_node *node, cmark_node *child) {
   if (!S_can_contain(node, child)) {
     return 0;
-- 
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