cast vec to slices

Author: Electron-libre

src/libsyntax/parse/mod.rs

@@ -425,23 +425,23 @@ mod tests {
             let tts: &[TokenTree] = &tts[..];
 
             match tts {
-                &[
+                [
                     TokenTree::Token(Token { kind: token::Ident(name_macro_rules, false), .. }),
                     TokenTree::Token(Token { kind: token::Not, .. }),
                     TokenTree::Token(Token { kind: token::Ident(name_zip, false), .. }),
-                    TokenTree::Delimited(_, macro_delim, ref macro_tts)
+                    TokenTree::Delimited(_, macro_delim,  macro_tts)
                 ]
                 if name_macro_rules == sym::macro_rules && name_zip.as_str() == "zip" => {
                     let tts = &macro_tts.trees().collect::<Vec<_>>();
-                    match tts {
+                    match &tts[..] {
                         [
                             TokenTree::Delimited(_, first_delim, first_tts),
                             TokenTree::Token(Token { kind: token::FatArrow, .. }),
                             TokenTree::Delimited(_, second_delim, second_tts),
                         ]
                         if macro_delim == token::Paren => {
                             let tts = &first_tts.trees().collect::<Vec<_>>();
-                            match tts {
+                            match &tts[..] {
                                 [
                                     TokenTree::Token(Token { kind: token::Dollar, .. }),
                                     TokenTree::Token(Token { kind: token::Ident(name, false), .. }),
@@ -450,7 +450,7 @@ mod tests {
                                 _ => panic!("value 3: {:?} {:?}", first_delim, first_tts),
                             }
                             let tts = &second_tts.trees().collect::<Vec<_>>();
-                            match tts {
+                            match &tts[..] {
                                 [
                                     TokenTree::Token(Token { kind: token::Dollar, .. }),
                                     TokenTree::Token(Token { kind: token::Ident(name, false), .. }),