Added ResultNodeFacade constructor overload for root nodes

* the common use case of ResultNodeFacade inside external function implementations is managing the result root node
** this root node can be fetched through the xercesc::DOMDocument instance
** the new alias overload automatically fetches the root node pointer and as such doesn't require a root node parameter
* changed external function implementations accordingly

2 files changed, 14 insertions, 2 deletions

diff --git a/src/support/dom/result_node_facade.cc b/src/support/dom/result_node_facade.cc
index 570b4e1..c5829c5 100644
--- a/src/support/dom/result_node_facade.cc
+++ b/src/support/dom/result_node_facade.cc
@@ -9,8 +9,18 @@ namespace InputXSLT {
 
 ResultNodeFacade::ResultNodeFacade(
 	xercesc::DOMDocument* document,
-	xercesc::DOMNode* node,
-	const std::string& name
+	const std::string&    name
+):
+	ResultNodeFacade(
+		document,
+		document->getDocumentElement(),
+		name
+	) { }
+
+ResultNodeFacade::ResultNodeFacade(
+	xercesc::DOMDocument* document,
+	xercesc::DOMNode*     node,
+	const std::string&    name
 ):
 	dom_document_(document),
 	result_node_(
diff --git a/src/support/dom/result_node_facade.h b/src/support/dom/result_node_facade.h
index c7e831e..c743f92 100644
--- a/src/support/dom/result_node_facade.h
+++ b/src/support/dom/result_node_facade.h
@@ -11,11 +11,13 @@ namespace InputXSLT {
 
 class ResultNodeFacade {
 	public:
+		ResultNodeFacade(xercesc::DOMDocument*, const std::string&);
 		ResultNodeFacade(
 			xercesc::DOMDocument*,
 			xercesc::DOMNode*,
 			const std::string&
 		);
+
 		~ResultNodeFacade();
 
 		xercesc::DOMElement* getResultElement();