data: Added intermediate fix to handle multiple definitions of main() in C/C++ (issue #233)

* record main definition as .:main:.<filename>
* restore original name in name deserialization
* don't look up id when undoing main activation

src/lib/component/controller/UndoRedoController.cpp

@@ -493,7 +493,13 @@ void UndoRedoController::replayCommand(std::list<Command>::iterator it)
 
 			for (SearchMatch match : matches)
 			{
-				match.tokenIds = m_storageAccess->getNodeIdsForNameHierarchies(match.tokenNames);
+				// TODO: replace duplicate main definition fix with better solution
+				if (match.nodeType.getType() != NodeType::NODE_FUNCTION || !match.tokenNames.size() ||
+					match.tokenNames[0].getRawName() != L"main")
+				{
+					match.tokenIds = m_storageAccess->getNodeIdsForNameHierarchies(match.tokenNames);
+				}
+
 				if (!match.tokenIds.size())
 				{
 					match.nodeType = NodeType::NODE_SYMBOL;

src/lib/data/name/NameElement.cpp

@@ -38,7 +38,7 @@ std::wstring NameElement::Signature::qualifyName(const std::wstring& name) const
 
 bool NameElement::Signature::isValid() const
 {
-	return ((m_prefix + m_postfix).size() > 0);
+	return !m_prefix.empty() || !m_postfix.empty();
 }
 
 const std::wstring& NameElement::Signature::getPrefix() const
@@ -53,7 +53,7 @@ const std::wstring& NameElement::Signature::getPostfix() const
 
 std::wstring NameElement::Signature::getParameterString() const
 {
-	if (m_postfix.size())
+	if (!m_postfix.empty())
 	{
 		return utility::substrBeforeLast(m_postfix, L')') + L')';
 	}

src/lib/data/name/NameHierarchy.cpp

@@ -89,6 +89,15 @@ NameHierarchy NameHierarchy::deserialize(const std::wstring& serializedName)
 		nameHierarchy.push(NameElement(std::move(name), std::move(prefix), std::move(postfix)));
 	}
 
+	// TODO: replace duplicate main definition fix with better solution
+	if (nameHierarchy.size() == 1 && nameHierarchy.back().hasSignature() && !nameHierarchy.back().getName().empty() &&
+		nameHierarchy.back().getName()[0] == '.' && utility::isPrefix<std::wstring>(L".:main:.", nameHierarchy.back().getName()))
+	{
+		NameElement::Signature sig = nameHierarchy.back().getSignature();
+		nameHierarchy.pop();
+		nameHierarchy.push(NameElement(L"main", sig.getPrefix(), sig.getPostfix()));
+	}
+
 	return nameHierarchy;
 }