Added context awareness to XObjectValue casting logic

* added support for defining boost::filesystem::path as a external function parameter
** boost::filesystem::path parameters are resolved against the appropriate FilesystemContext and IncludeEntityResolver instances
* xalan::XSLTInputSource parameter source paths are also resolved
* removed need for passing a reference FilesystemContext to "constructDocument" methods
** they now only accept the parameters of the external function implemented by them
** all path resolution logic is wrapped by the newly created XObjectValue class
* converted XObjectValue namespace into class
** the "get" template method is now a template member method
** this was needed to enable value casting logic to access the appropriate FilesystemContext and IncludeEntityResolver instances
* this commit marks the next step towards the goals defined in 741a70f

1 files changed, 4 insertions, 5 deletions

diff --git a/src/function/read_file.h b/src/function/read_file.h
index fec8fe2..9c2185a 100644
--- a/src/function/read_file.h
+++ b/src/function/read_file.h
@@ -1,13 +1,15 @@
 #ifndef INPUTXSLT_SRC_FUNCTION_READ_FILE_H_
 #define INPUTXSLT_SRC_FUNCTION_READ_FILE_H_
 
+#include "boost/filesystem.hpp"
+
 #include "base.h"
 
 namespace InputXSLT {
 
 class FunctionReadFile : public FunctionBase<
 	FunctionReadFile,
-	std::string
+	boost::filesystem::path
 > {
 	public:
 		using FunctionBase::FunctionBase;
@@ -15,10 +17,7 @@ class FunctionReadFile : public FunctionBase<
 	protected:
 		friend FunctionBase;
 
-		xercesc::DOMDocument* constructDocument(
-			const FilesystemContext&,
-			std::string
-		);
+		xercesc::DOMDocument* constructDocument(boost::filesystem::path);
 
 };