From f625e90a0721483f7f44b94b9bb57cc9d59565e8 Mon Sep 17 00:00:00 2001
From: Kelly Rauchenberger <fefferburbia@gmail.com>
Date: Fri, 10 Feb 2017 11:48:58 -0500
Subject: Added negative filter conversions to objects

---
 lib/notion.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'lib/notion.h')

diff --git a/lib/notion.h b/lib/notion.h
index 69f5cef..5388e17 100644
--- a/lib/notion.h
+++ b/lib/notion.h
@@ -119,9 +119,24 @@ namespace verbly {
     
     operator filter() const
     {
+      if (!valid_)
+      {
+        throw std::domain_error("Bad access to uninitialized notion");
+      }
+
       return (id == id_);
     }
     
+    filter operator!() const
+    {
+      if (!valid_)
+      {
+        throw std::domain_error("Bad access to uninitialized notion");
+      }
+
+      return (id != id_);
+    }
+
     // Relationships with other objects
     
     static const field words;
-- 
cgit 1.4.1