From 664d5b33094b7158bb6f8a583a89d83ac69be83e Mon Sep 17 00:00:00 2001
From: Adam Izraelevitz
Date: Thu, 9 Mar 2017 12:39:04 -0800
Subject: Sint tests and change in serialization (#456)

SInt representation is no longer 2's complement, but instead a positive number (hex or base 10) that is optionally preceded by a sign (-+).---
 src/main/antlr4/FIRRTL.g4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/main/antlr4')

diff --git a/src/main/antlr4/FIRRTL.g4 b/src/main/antlr4/FIRRTL.g4
index cdec7260..e26aca2e 100644
--- a/src/main/antlr4/FIRRTL.g4
+++ b/src/main/antlr4/FIRRTL.g4
@@ -297,7 +297,7 @@ PosInt
   ;
 
 HexLit
-  : '"' 'h' ( HexDigit )+ '"'
+  : '"' 'h' ( '+' | '-' )? ( HexDigit )+ '"'
   ;
 
 DoubleLit
-- 
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