Index: src/OFXMLAttribute.m
==================================================================
--- src/OFXMLAttribute.m
+++ src/OFXMLAttribute.m
@@ -21,10 +21,12 @@
 #import "OFDictionary.h"
 #import "OFXMLElement.h"
 #import "OFAutoreleasePool.h"
 
 #import "OFInvalidArgumentException.h"
+
+#import "macros.h"
 
 @implementation OFXMLAttribute
 + attributeWithName: (OFString*)name
 	  namespace: (OFString*)ns
 	stringValue: (OFString*)value
@@ -125,10 +127,25 @@
 	if (![otherAttribute->stringValue isEqual: stringValue])
 		return NO;
 
 	return YES;
 }
+
+- (uint32_t)hash
+{
+	uint32_t hash;
+
+	OF_HASH_INIT(hash);
+
+	OF_HASH_ADD_INT32(hash, [name hash]);
+	OF_HASH_ADD_INT32(hash, [ns hash]);
+	OF_HASH_ADD_INT32(hash, [stringValue hash]);
+
+	OF_HASH_FINALIZE(hash);
+
+	return hash;
+}
 
 - (OFXMLElement*)XMLElementBySerializing
 {
 	OFAutoreleasePool *pool;
 	OFXMLElement *element;

Index: src/OFXMLElement.m
==================================================================
--- src/OFXMLElement.m
+++ src/OFXMLElement.m
@@ -30,10 +30,12 @@
 
 #import "OFInvalidArgumentException.h"
 #import "OFMalformedXMLException.h"
 #import "OFNotImplementedException.h"
 #import "OFUnboundNamespaceException.h"
+
+#import "macros.h"
 
 @interface OFXMLElement_OFXMLElementBuilderDelegate: OFObject
 {
 @public
 	OFXMLElement *element;
@@ -974,10 +976,31 @@
 	    ![otherElement->comment isEqual: comment])
 		return NO;
 
 	return YES;
 }
+
+- (uint32_t)hash
+{
+	uint32_t hash;
+
+	OF_HASH_INIT(hash);
+
+	OF_HASH_ADD_INT32(hash, [name hash]);
+	OF_HASH_ADD_INT32(hash, [ns hash]);
+	OF_HASH_ADD_INT32(hash, [defaultNamespace hash]);
+	OF_HASH_ADD_INT32(hash, [attributes hash]);
+	OF_HASH_ADD_INT32(hash, [namespaces hash]);
+	OF_HASH_ADD_INT32(hash, [children hash]);
+	OF_HASH_ADD_INT32(hash, [characters hash]);
+	OF_HASH_ADD_INT32(hash, [CDATA hash]);
+	OF_HASH_ADD_INT32(hash, [comment hash]);
+
+	OF_HASH_FINALIZE(hash);
+
+	return hash;
+}
 
 - (void)dealloc
 {
 	[name release];
 	[ns release];