From 808945c21c5128e4db2b23c4107c8b9d7e3382e1 Mon Sep 17 00:00:00 2001
From: Florian Hahn <flo@fhahn.com>
Date: Mon, 29 Dec 2014 21:29:31 +0100
Subject: [PATCH] Handle range in model lexer correctly #15877

---
 src/grammar/RustLexer.g4 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/grammar/RustLexer.g4 b/src/grammar/RustLexer.g4
index 0ff9af7aca1..00af6d358e5 100644
--- a/src/grammar/RustLexer.g4
+++ b/src/grammar/RustLexer.g4
@@ -112,7 +112,8 @@ LIT_INTEGER
   ;
 
 LIT_FLOAT
-  : [0-9][0-9_]* ('.' | ('.' [0-9][0-9_]*)? ([eE] [-+]? [0-9][0-9_]*)? SUFFIX?)
+  : [0-9][0-9_]* ( '.' {_input.LA(1) != '.'}?
+                 | ('.' [0-9][0-9_]*)? ([eE] [-+]? [0-9][0-9_]*)? SUFFIX?)
   ;
 
 LIT_STR