add presence containers

Change-Id: Ic8e33d68e496deae9dfe4c3e5ebcecbd45ee31b2
diff --git a/src/ast.cpp b/src/ast.cpp
index 9345192..0e40b9c 100644
--- a/src/ast.cpp
+++ b/src/ast.cpp
@@ -40,3 +40,13 @@
 {
     return this->m_path == b.m_path;
 }
+
+bool create_::operator==(const create_& b) const
+{
+    return this->m_path == b.m_path;
+}
+
+bool delete_::operator==(const delete_& b) const
+{
+    return this->m_path == b.m_path;
+}