From ace7ad7dc056b549279f2e1dcbdb10fffc742b4b Mon Sep 17 00:00:00 2001
From: Valk Richard Li <48872266+ValKmjolnir@users.noreply.github.com>
Date: Wed, 21 Aug 2019 16:36:15 +0800
Subject: [PATCH] Update

---
 version0.4/ebnf.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/version0.4/ebnf.cpp b/version0.4/ebnf.cpp
index c0115ca..2155797 100644
--- a/version0.4/ebnf.cpp
+++ b/version0.4/ebnf.cpp
@@ -16,6 +16,10 @@
 <1><scalar> ::=
 	<number> //NUMBER
 	<string> //STRING
+	<(> <!> <identifier>|<scalar> <)>//first
+	<!> <identifier>|<scalar>//then
+	<(> <identifier>|<scalar> <+>|<->|<*>|</>|<~>|<and>|<or>|<==>|<!=>|<<>|<<=>|<>>|<>=> <identifier>|<scalar> <)> //first
+	<identifier>|<scalar> <+>|<->|<*>|</>|<~>|<and>|<or>|<==>|<!=>|<<>|<<=>|<>>|<>=> <identifier>|<scalar> //then
 <2><scalars> ::=
 	<scalar>|<scalars>         <,> <scalar>|<identifier>
 	<identifier>|<identifiers> <,> <scalar>