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

3 files changed, 16 insertions, 20 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();
diff --git a/src/support/filesystem_context.cc b/src/support/filesystem_context.cc
index 34b8950..6ad682f 100644
--- a/src/support/filesystem_context.cc
+++ b/src/support/filesystem_context.cc
@@ -1,6 +1,18 @@
 #include "filesystem_context.h"
 
-#include "support/utility.h"
+namespace {
+
+inline std::string xalanToString(const xalan::XalanDOMString& text) {
+	xalan::CharVectorType castHelper;
+	text.transcode(castHelper);
+
+	return std::string(
+		castHelper.begin(),
+		castHelper.end() - 1
+	);
+}
+
+}
 
 namespace InputXSLT {
 
diff --git a/src/support/utility.h b/src/support/utility.h
deleted file mode 100644
index 4c63c72..0000000
--- a/src/support/utility.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef INPUTXSLT_SRC_SUPPORT_UTILITY_H_
-#define INPUTXSLT_SRC_SUPPORT_UTILITY_H_
-
-namespace {
-
-inline std::string xalanToString(const xalan::XalanDOMString& text) {
-	xalan::CharVectorType castHelper;
-	text.transcode(castHelper);
-
-	return std::string(
-		castHelper.begin(),
-		castHelper.end() - 1
-	);
-}
-
-}
-
-#endif  // INPUTXSLT_SRC_SUPPORT_UTILITY_H_