Closes #10

core/dbc_statement_handler.h

@@ -22,6 +22,9 @@ struct DbcParseContext {
     std::size_t lineNumber = 0U;
     std::vector<PendingValueDescriptions> pendingValues = {};
 
+    std::vector<std::vector<std::size_t>> signalLines = {};
+    void ValidateMultiplexing(const std::string &filePath) const;
+
     void ResolveValueDescriptions(const std::string &filePath);
 };
 
@@ -60,6 +63,11 @@ public:
     void Handle(const std::string &line, DbcParseContext &context) const override;
 };
 
+class DbcUnsupportedMultiplexingHandler : public DbcStatementHandler {
+public:
+    void Handle(const std::string &line, DbcParseContext &context) const override;
+};
+
 /** Exact-key dispatch to handlers created once per registration via TypeFactory. */
 class DbcStatementDispatcher {
 public: