1 files changed, 20 insertions, 10 deletions
diff --git a/vendor/proc-macro2/src/wrapper.rs b/vendor/proc-macro2/src/wrapper.rs
index 750e156ff..47d149473 100644
--- a/vendor/proc-macro2/src/wrapper.rs
+++ b/vendor/proc-macro2/src/wrapper.rs
@@ -1,12 +1,12 @@
 use crate::detection::inside_proc_macro;
 use crate::{fallback, Delimiter, Punct, Spacing, TokenTree};
-use std::fmt::{self, Debug, Display};
-use std::iter::FromIterator;
-use std::ops::RangeBounds;
+use core::fmt::{self, Debug, Display};
+use core::iter::FromIterator;
+use core::ops::RangeBounds;
+use core::str::FromStr;
 use std::panic;
 #[cfg(super_unstable)]
 use std::path::PathBuf;
-use std::str::FromStr;
 
 #[derive(Clone)]
 pub(crate) enum TokenStream {
@@ -350,12 +350,6 @@ impl Iterator for TokenTreeIter {
     }
 }
 
-impl Debug for TokenTreeIter {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("TokenTreeIter").finish()
-    }
-}
-
 #[derive(Clone, PartialEq, Eq)]
 #[cfg(super_unstable)]
 pub(crate) enum SourceFile {
@@ -511,6 +505,22 @@ impl Span {
         }
     }
 
+    #[cfg(super_unstable)]
+    pub fn before(&self) -> Span {
+        match self {
+            Span::Compiler(s) => Span::Compiler(s.before()),
+            Span::Fallback(s) => Span::Fallback(s.before()),
+        }
+    }
+
+    #[cfg(super_unstable)]
+    pub fn after(&self) -> Span {
+        match self {
+            Span::Compiler(s) => Span::Compiler(s.after()),
+            Span::Fallback(s) => Span::Fallback(s.after()),
+        }
+    }
+
     pub fn join(&self, other: Span) -> Option<Span> {
         let ret = match (self, other) {
             #[cfg(proc_macro_span)]