Support absolute paths

Change-Id: Ibe087d2bad0c6c9f1619d8811103415bcb3b4906
diff --git a/src/ast_handlers.hpp b/src/ast_handlers.hpp
index 2953dad..aa37574 100644
--- a/src/ast_handlers.hpp
+++ b/src/ast_handlers.hpp
@@ -189,6 +189,15 @@
     }
 };
 
+struct absoluteStart_class {
+    template <typename T, typename Iterator, typename Context>
+    void on_success(Iterator const&, Iterator const&, T&, Context const& context)
+    {
+        auto& parserContext = x3::get<parser_context_tag>(context);
+        parserContext.m_curPath.m_nodes.clear();
+    }
+};
+
 struct path_class {
     template <typename Iterator, typename Exception, typename Context>
     x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)