From 74d637f511ec25b9d74ef175bc0e13fa550991b4 Mon Sep 17 00:00:00 2001
From: dalance <dalance@gmail.com>
Date: Mon, 19 Aug 2019 19:28:51 +0900
Subject: [PATCH] Fix single line comment

---
 sv-parser-parser/src/general/comments.rs | 8 ++++++--
 sv-parser-parser/src/tests.rs            | 9 +++------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/sv-parser-parser/src/general/comments.rs b/sv-parser-parser/src/general/comments.rs
index 3f8fd5c..dd63b51 100644
--- a/sv-parser-parser/src/general/comments.rs
+++ b/sv-parser-parser/src/general/comments.rs
@@ -12,8 +12,12 @@ pub(crate) fn comment(s: Span) -> IResult<Span, Comment> {
 #[packrat_parser]
 pub(crate) fn one_line_comment(s: Span) -> IResult<Span, Comment> {
     let (s, a) = tag("//")(s)?;
-    let (s, b) = is_not("\n")(s)?;
-    let a = concat(a, b).unwrap();
+    let (s, b) = opt(is_not("\n"))(s)?;
+    let a = if let Some(b) = b {
+        concat(a, b).unwrap()
+    } else {
+        a
+    };
     Ok((
         s,
         Comment {
diff --git a/sv-parser-parser/src/tests.rs b/sv-parser-parser/src/tests.rs
index d6b9b92..1a932e2 100644
--- a/sv-parser-parser/src/tests.rs
+++ b/sv-parser-parser/src/tests.rs
@@ -283,6 +283,7 @@ mod unit {
     #[test]
     fn test_comment() {
         test!(comment, "// comment", Ok((_, _)));
+        test!(comment, "//", Ok((_, _)));
         test!(comment, "/* comment\n\n */", Ok((_, _)));
     }
 
@@ -15705,12 +15706,8 @@ mod spec {
 fn debug() {
     test!(
         source_text,
-        r##"`pragma protect encoding=(enctype="raw")
-                  `pragma protect data_method="x-caesar", data_keyname="rot13", begin
-                  `pragma protect
-                  runtime_license=(library="lic.so",feature="runSecret",entry="chk", match=42)
-                  `pragma protect end
-                "##,
+        r##"//aaa
+                //bbb"##,
         Ok((_, _))
     );
 }