add some missing operators to LineAndColumn

src/line_and_column.hh

@@ -51,10 +51,29 @@ struct LineAndColumn
         return column <= other.column;
     }
 
+    bool operator> (const EffectiveType& other) const
+    {
+        if (line != other.line)
+            return line > other.line;
+        return column > other.column;
+    }
+
+    bool operator>= (const EffectiveType& other) const
+    {
+        if (line != other.line)
+            return line > other.line;
+        return column >= other.column;
+    }
+
     bool operator== (const EffectiveType& other) const
     {
         return line == other.line and column == other.column;
     }
+
+    bool operator!= (const EffectiveType& other) const
+    {
+        return line != other.line or column != other.column;
+    }
 };
 
 }