Added input parameter to FunctionTransform

* the external "transform" function now expects a input document as its first parameter
** this input parameter is resolved and passed as input to the transformation
** changed and expanded test case accordingly
* because of xalan internal problem this currently only supports input DOMs loaded directly from the fs
** passing result trees or node sets analog to how the transformation may be passed into the function leads to parsing and assert failures
** parsing node-based input DOMs using xalanc::XalanTransformer::parseSource produces errors concerning base entity resolution
** if the error capacitor instance is temporarily disabled it works correctly as long as one doesn't try to access the input document
*** this causes a assert failure in the XPath implementation (seems to be related to XALANC-540)

3 files changed, 4 insertions, 2 deletions

diff --git a/src/function/transform.cc b/src/function/transform.cc
index 9cf806f..bc71125 100644
--- a/src/function/transform.cc
+++ b/src/function/transform.cc
@@ -31,6 +31,7 @@ inline std::function<void(const ErrorCapacitor::error_cache&)> handleErrors(
 namespace InputXSLT {
 
 xercesc::DOMDocument* FunctionTransform::constructDocument(
+	xalan::XSLTInputSource  inputSource,
 	xalan::XSLTInputSource  transformationSource,
 	xalan::XObjectPtr       parameterObject
 ) {
@@ -50,6 +51,7 @@ xercesc::DOMDocument* FunctionTransform::constructDocument(
 
 	if ( auto transformation = TransformationFacade::try_create(
 		handleErrors(result),
+		inputSource,
 		transformationSource,
 		this->include_resolver_
 	) ) {
diff --git a/src/function/transform.h b/src/function/transform.h
index ee88529..cda5502 100644
--- a/src/function/transform.h
+++ b/src/function/transform.h
@@ -12,6 +12,7 @@ namespace InputXSLT {
 class FunctionTransform : public FunctionBase<
 	FunctionTransform,
 	xalan::XSLTInputSource,
+	xalan::XSLTInputSource,
 	xalan::XObjectPtr
 > {
 	public:
@@ -22,6 +23,7 @@ class FunctionTransform : public FunctionBase<
 
 		xercesc::DOMDocument* constructDocument(
 			xalan::XSLTInputSource,
+			xalan::XSLTInputSource,
 			xalan::XObjectPtr
 		);
 
diff --git a/src/transformation_facade.h b/src/transformation_facade.h
index 00a5785..eb134cd 100644
--- a/src/transformation_facade.h
+++ b/src/transformation_facade.h
@@ -20,8 +20,6 @@ class TransformationFacade {
 	public:
 		typedef std::unique_ptr<TransformationFacade> ptr;
 
-		class input;
-
 		template <typename... Arguments>
 		static ptr try_create(
 			const std::function<void(const ErrorCapacitor::error_cache&)>&,