From 6da5726ac1f5cf6860d1e252e7a051b55c0fa332 Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Sat, 13 Jul 2019 19:28:33 -0600
Subject: [PATCH] feat(parser): Support C++ hex literal separators

---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 781d4da89..5b425bcf1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -63,7 +63,8 @@ pub fn process_file(
 fn is_hex(ident: &str) -> bool {
     lazy_static::lazy_static! {
         // `_`: number literal separator in Rust and other languages
-        static ref HEX: regex::Regex = regex::Regex::new(r#"^0[xX][0-9a-fA-F_]+$"#).unwrap();
+        // `'`: number literal separator in C++
+        static ref HEX: regex::Regex = regex::Regex::new(r#"^0[xX][0-9a-fA-F_']+$"#).unwrap();
     }
     HEX.is_match(ident)
 }