Upgrade rust/crates/proc-macro2 to 1.0.27

Test: make
Change-Id: I66869c4d506555c12bd054d731e818b2aafa6720

1 files changed, 12 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 9dec309..52d01f2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -78,7 +78,7 @@
 //! a different thread.
 
 // Proc-macro2 types in rustdoc of other crates get linked to here.
-#![doc(html_root_url = "https://docs.rs/proc-macro2/1.0.26")]
+#![doc(html_root_url = "https://docs.rs/proc-macro2/1.0.27")]
 #![cfg_attr(any(proc_macro_span, super_unstable), feature(proc_macro_span))]
 #![cfg_attr(super_unstable, feature(proc_macro_raw_ident, proc_macro_def_site))]
 #![cfg_attr(doc_cfg, feature(doc_cfg))]
@@ -1203,6 +1203,17 @@ impl Literal {
     }
 }
 
+impl FromStr for Literal {
+    type Err = LexError;
+
+    fn from_str(repr: &str) -> Result<Self, LexError> {
+        repr.parse().map(Literal::_new).map_err(|inner| LexError {
+            inner,
+            _marker: Marker,
+        })
+    }
+}
+
 impl Debug for Literal {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         Debug::fmt(&self.inner, f)