fix: namespace nodes behave properly when compacted

sparklemotion · Oct 15, 2022 · 3864bf5 · 3864bf5
1 parent bed4c87
commit 3864bf5
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Showing 3 changed files with 42 additions and 6 deletions.
diff --git a/ext/nokogiri/nokogiri.h b/ext/nokogiri/nokogiri.h
@@ -171,6 +171,7 @@ int noko_io_write(void *ctx, char *buffer, int len);
 int noko_io_close(void *ctx);
 
 #define Noko_Node_Get_Struct(obj,type,sval) ((sval) = (type*)DATA_PTR(obj))
+#define Noko_Namespace_Get_Struct(obj,type,sval) ((sval) = (type*)DATA_PTR(obj))
 
 VALUE noko_xml_node_wrap(VALUE klass, xmlNodePtr node) ;
 VALUE noko_xml_node_wrap_node_set_result(xmlNodePtr node, VALUE node_set) ;

diff --git a/ext/nokogiri/xml_namespace.c b/ext/nokogiri/xml_namespace.c
@@ -25,12 +25,13 @@
 VALUE cNokogiriXmlNamespace ;
 
 static void
-dealloc_namespace(xmlNsPtr ns)
+_xml_namespace_dealloc(void *ptr)
 {
   /*
    * this deallocator is only used for namespace nodes that are part of an xpath
    * node set. see noko_xml_namespace_wrap().
    */
+  xmlNsPtr ns = ptr;
   NOKOGIRI_DEBUG_START(ns) ;
   if (ns->href) {
     xmlFree(DISCARD_CONST_QUAL_XMLCHAR(ns->href));
@@ -42,6 +43,36 @@ dealloc_namespace(xmlNsPtr ns)
   NOKOGIRI_DEBUG_END(ns) ;
 }
 
+#ifdef HAVE_RB_GC_LOCATION
+static void
+_xml_namespace_update_references(void *ptr)
+{
+  xmlNsPtr ns = ptr;
+  if (ns->_private) {
+    ns->_private = (void *)rb_gc_location((VALUE)ns->_private);
+  }
+}
+#else
+#  define _xml_namespace_update_references 0
+#endif
+
+static const rb_data_type_t nokogiri_xml_namespace_type_with_dealloc = {
+  "Nokogiri/XMLNamespace/WithDealloc",
+  {0, _xml_namespace_dealloc, 0, _xml_namespace_update_references},
+  0, 0,
+#ifdef RUBY_TYPED_FREE_IMMEDIATELY
+  RUBY_TYPED_FREE_IMMEDIATELY,
+#endif
+};
+
+static const rb_data_type_t nokogiri_xml_namespace_type_without_dealloc = {
+  "Nokogiri/XMLNamespace/WithoutDealloc",
+  {0, 0, 0, _xml_namespace_update_references},
+  0, 0,
+#ifdef RUBY_TYPED_FREE_IMMEDIATELY
+  RUBY_TYPED_FREE_IMMEDIATELY,
+#endif
+};
 
 /*
  * call-seq:
@@ -54,7 +85,7 @@ prefix(VALUE self)
 {
   xmlNsPtr ns;
 
-  Data_Get_Struct(self, xmlNs, ns);
+  Noko_Namespace_Get_Struct(self, xmlNs, ns);
   if (!ns->prefix) { return Qnil; }
 
   return NOKOGIRI_STR_NEW2(ns->prefix);
@@ -71,7 +102,7 @@ href(VALUE self)
 {
   xmlNsPtr ns;
 
-  Data_Get_Struct(self, xmlNs, ns);
+  Noko_Namespace_Get_Struct(self, xmlNs, ns);
   if (!ns->href) { return Qnil; }
 
   return NOKOGIRI_STR_NEW2(ns->href);
@@ -87,14 +118,18 @@ noko_xml_namespace_wrap(xmlNsPtr c_namespace, xmlDocPtr c_document)
   }
 
   if (c_document) {
-    rb_namespace = Data_Wrap_Struct(cNokogiriXmlNamespace, 0, 0, c_namespace);
+    rb_namespace = TypedData_Wrap_Struct(cNokogiriXmlNamespace,
+                                         &nokogiri_xml_namespace_type_without_dealloc,
+                                         c_namespace);
 
     if (DOC_RUBY_OBJECT_TEST(c_document)) {
       rb_iv_set(rb_namespace, "@document", DOC_RUBY_OBJECT(c_document));
       rb_ary_push(DOC_NODE_CACHE(c_document), rb_namespace);
     }
   } else {
-    rb_namespace = Data_Wrap_Struct(cNokogiriXmlNamespace, 0, dealloc_namespace, c_namespace);
+    rb_namespace = TypedData_Wrap_Struct(cNokogiriXmlNamespace,
+                                         &nokogiri_xml_namespace_type_with_dealloc,
+                                         c_namespace);
   }
 
   c_namespace->_private = (void *)rb_namespace;

diff --git a/ext/nokogiri/xml_node.c b/ext/nokogiri/xml_node.c
@@ -1353,7 +1353,7 @@ set_namespace(VALUE self, VALUE namespace)
   Noko_Node_Get_Struct(self, xmlNode, node);
 
   if (!NIL_P(namespace)) {
-    Data_Get_Struct(namespace, xmlNs, ns);
+    Noko_Namespace_Get_Struct(namespace, xmlNs, ns);
   }
 
   xmlSetNs(node, ns);