ui: scope names in snippet titles

* added title for snippets
* title displays name of parent scope.
* when new TokenLocationFiles are created in the storage they are now returned as shared_ptr to ensure correct linking in the contained data.
* Storage::getTokenLocationsForLinesInFile() now always returns pairs of start and end locations.
* Adjusted code snippet view to regard the change described above.

src/lib/component/view/CodeView.cpp

@@ -7,7 +7,7 @@ CodeView::CodeSnippetParams::CodeSnippetParams()
 	: startLineNumber(0)
 	, endLineNumber(0)
 	, lineCount(0)
-	, locationFile("")
+	, locationFile(std::make_shared<TokenLocationFile>(""))
 	, isActive(false)
 	, isDeclaration(false)
 {
@@ -40,8 +40,8 @@ bool CodeView::CodeSnippetParams::sort(const CodeSnippetParams& a, const CodeSni
 		return false;
 	}
 
-	const FilePath& aFilePath = a.locationFile.getFilePath();
-	const FilePath& bFilePath = b.locationFile.getFilePath();
+	const FilePath& aFilePath = a.locationFile->getFilePath();
+	const FilePath& bFilePath = b.locationFile->getFilePath();
 
 	// different files
 	if (aFilePath != bFilePath)

src/lib/component/view/CodeView.h

@@ -1,6 +1,8 @@
 #ifndef CODE_VIEW_H
 #define CODE_VIEW_H
 
+#include <memory>
+
 #include "component/view/View.h"
 #include "data/location/TokenLocationFile.h"
 #include "utility/types.h"
@@ -21,9 +23,10 @@ public:
 		uint endLineNumber;
 		uint lineCount;
 
+		std::string title;
 		std::string code;
 
-		TokenLocationFile locationFile;
+		std::shared_ptr<TokenLocationFile> locationFile;
 
 		bool isActive;
 		bool isDeclaration;