logic: fixed some crashes

* verbose ast visitor logs the file that is currently visited.
* fixed crash in log controller
* fixed crash when solving the name of an anonymous element that has no valid location

src/lib_cxx/data/parser/cxx/CxxVerboseAstVisitor.cpp

@@ -14,6 +14,7 @@
 
 CxxVerboseAstVisitor::CxxVerboseAstVisitor(clang::ASTContext* context, clang::Preprocessor* preprocessor, ParserClient* client, FileRegister* fileRegister)
 	: base(context, preprocessor, client, fileRegister)
+	, m_currentFilePath("")
 	, m_indentation(0)
 {
 }
@@ -36,6 +37,12 @@ bool CxxVerboseAstVisitor::TraverseDecl(clang::Decl *d)
 		ParseLocation loc = getParseLocation(d->getSourceRange());
 		stream << " <" << loc.startLineNumber << ":" << loc.startColumnNumber << ", " << loc.endLineNumber << ":" << loc.endColumnNumber << ">";
 
+		if (m_currentFilePath != loc.filePath.str())
+		{
+			m_currentFilePath = loc.filePath.str();
+			LOG_INFO_STREAM_BARE(<< "Indexer - Traversing \"" + m_currentFilePath + "\"" );
+		}
+
 		LOG_INFO_STREAM_BARE(<< "Indexer - " << stream.str());
 
 		{

src/lib_cxx/data/parser/cxx/CxxVerboseAstVisitor.h

@@ -40,6 +40,7 @@ private:
 		return "";
 	}
 
+	std::string m_currentFilePath;
 	unsigned int m_indentation;
 };
 

src/lib_cxx/data/parser/cxx/name_resolver/CxxDeclNameResolver.cpp

@@ -288,8 +288,12 @@ std::shared_ptr<CxxDeclName> CxxDeclNameResolver::getDeclName(const clang::Named
 
 std::string CxxDeclNameResolver::getNameForAnonymousSymbol(const std::string& symbolKindName, const clang::PresumedLoc& presumedBegin)
 {
-	return "anonymous " + symbolKindName +
-		" (" + FilePath(presumedBegin.getFilename()).fileName() + "<" + std::to_string(presumedBegin.getLine()) + ":" + std::to_string(presumedBegin.getColumn()) + ">)";
+	if (presumedBegin.isValid())
+	{
+		return "anonymous " + symbolKindName +
+			" (" + FilePath(presumedBegin.getFilename()).fileName() + "<" + std::to_string(presumedBegin.getLine()) + ":" + std::to_string(presumedBegin.getColumn()) + ">)";
+	}
+	return "anonymous " + symbolKindName;
 }
 
 std::string CxxDeclNameResolver::getTemplateParameterString(const clang::NamedDecl* parameter)
@@ -333,7 +337,7 @@ std::string CxxDeclNameResolver::getTemplateParameterTypeString(const clang::Non
 	{
 		typeNameResolver.ignoreContextDecl(m_currentDecl);
 	}
-	
+
 	std::string typeString = "";
 
 	std::shared_ptr<CxxTypeName> typeName = typeNameResolver.getName(parameter->getType());