Adapted read-directory tree construction to match the other functions

* throwing std::out_of_range exception from DomDocumentCache::get instead of returning nullptr in case of a problem
* moved xalanToString method back into FilesystemContext compilation unit as is only needed there

1 files changed, 3 insertions, 1 deletions

diff --git a/src/support/dom/document_cache.cc b/src/support/dom/document_cache.cc
index f814559..1573af8 100644
--- a/src/support/dom/document_cache.cc
+++ b/src/support/dom/document_cache.cc
@@ -1,5 +1,7 @@
 #include "document_cache.h"
 
+#include <stdexcept>
+
 namespace InputXSLT {
 
 DomDocumentCache::DomDocumentCache():
@@ -16,7 +18,7 @@ DomDocumentCache::item* DomDocumentCache::get(const std::string& key) {
 		if ( result.second ) {
 			return (*(result.first)).second.get();
 		} else {
-			return nullptr;
+			throw std::out_of_range("failed to instantiate DomDocumentCache");
 		}
 	} else {
 		return (*itemIter).second.get();