Rename IsJoint -> Spacing

To match better naming from proc-macro

1 files changed, 19 insertions, 22 deletions

diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index 151acddae84..f201f0b5c66 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -83,7 +83,7 @@ impl TokenTree {
     }
 
     pub fn joint(self) -> TokenStream {
-        TokenStream::new(vec![(self, Joint)])
+        TokenStream::new(vec![(self, Spacing::Joint)])
     }
 
     pub fn token(kind: TokenKind, span: Span) -> TokenTree {
@@ -125,22 +125,20 @@ where
 /// instead of a representation of the abstract syntax tree.
 /// Today's `TokenTree`s can still contain AST via `token::Interpolated` for back-compat.
 #[derive(Clone, Debug, Default, Encodable, Decodable)]
-pub struct TokenStream(pub Lrc<Vec<TreeAndJoint>>);
+pub struct TokenStream(pub Lrc<Vec<TreeAndSpacing>>);
 
-pub type TreeAndJoint = (TokenTree, IsJoint);
+pub type TreeAndSpacing = (TokenTree, Spacing);
 
 // `TokenStream` is used a lot. Make sure it doesn't unintentionally get bigger.
 #[cfg(target_arch = "x86_64")]
 rustc_data_structures::static_assert_size!(TokenStream, 8);
 
 #[derive(Clone, Copy, Debug, PartialEq, Encodable, Decodable)]
-pub enum IsJoint {
+pub enum Spacing {
+    Alone,
     Joint,
-    NonJoint,
 }
 
-use IsJoint::*;
-
 impl TokenStream {
     /// Given a `TokenStream` with a `Stream` of only two arguments, return a new `TokenStream`
     /// separating the two arguments with a comma for diagnostic suggestions.
@@ -153,7 +151,7 @@ impl TokenStream {
                 let sp = match (&ts, &next) {
                     (_, (TokenTree::Token(Token { kind: token::Comma, .. }), _)) => continue,
                     (
-                        (TokenTree::Token(token_left), NonJoint),
+                        (TokenTree::Token(token_left), Spacing::Alone),
                         (TokenTree::Token(token_right), _),
                     ) if ((token_left.is_ident() && !token_left.is_reserved_ident())
                         || token_left.is_lit())
@@ -162,11 +160,11 @@ impl TokenStream {
                     {
                         token_left.span
                     }
-                    ((TokenTree::Delimited(sp, ..), NonJoint), _) => sp.entire(),
+                    ((TokenTree::Delimited(sp, ..), Spacing::Alone), _) => sp.entire(),
                     _ => continue,
                 };
                 let sp = sp.shrink_to_hi();
-                let comma = (TokenTree::token(token::Comma, sp), NonJoint);
+                let comma = (TokenTree::token(token::Comma, sp), Spacing::Alone);
                 suggestion = Some((pos, comma, sp));
             }
         }
@@ -184,19 +182,19 @@ impl TokenStream {
 
 impl From<TokenTree> for TokenStream {
     fn from(tree: TokenTree) -> TokenStream {
-        TokenStream::new(vec![(tree, NonJoint)])
+        TokenStream::new(vec![(tree, Spacing::Alone)])
     }
 }
 
-impl From<TokenTree> for TreeAndJoint {
-    fn from(tree: TokenTree) -> TreeAndJoint {
-        (tree, NonJoint)
+impl From<TokenTree> for TreeAndSpacing {
+    fn from(tree: TokenTree) -> TreeAndSpacing {
+        (tree, Spacing::Alone)
     }
 }
 
 impl iter::FromIterator<TokenTree> for TokenStream {
     fn from_iter<I: IntoIterator<Item = TokenTree>>(iter: I) -> Self {
-        TokenStream::new(iter.into_iter().map(Into::into).collect::<Vec<TreeAndJoint>>())
+        TokenStream::new(iter.into_iter().map(Into::into).collect::<Vec<TreeAndSpacing>>())
     }
 }
 
@@ -209,7 +207,7 @@ impl PartialEq<TokenStream> for TokenStream {
 }
 
 impl TokenStream {
-    pub fn new(streams: Vec<TreeAndJoint>) -> TokenStream {
+    pub fn new(streams: Vec<TreeAndSpacing>) -> TokenStream {
         TokenStream(Lrc::new(streams))
     }
 
@@ -320,11 +318,11 @@ impl TokenStreamBuilder {
         // If `self` is not empty and the last tree within the last stream is a
         // token tree marked with `Joint`...
         if let Some(TokenStream(ref mut last_stream_lrc)) = self.0.last_mut() {
-            if let Some((TokenTree::Token(last_token), Joint)) = last_stream_lrc.last() {
+            if let Some((TokenTree::Token(last_token), Spacing::Joint)) = last_stream_lrc.last() {
                 // ...and `stream` is not empty and the first tree within it is
                 // a token tree...
                 let TokenStream(ref mut stream_lrc) = stream;
-                if let Some((TokenTree::Token(token), is_joint)) = stream_lrc.first() {
+                if let Some((TokenTree::Token(token), spacing)) = stream_lrc.first() {
                     // ...and the two tokens can be glued together...
                     if let Some(glued_tok) = last_token.glue(&token) {
                         // ...then do so, by overwriting the last token
@@ -337,8 +335,7 @@ impl TokenStreamBuilder {
                         // Overwrite the last token tree with the merged
                         // token.
                         let last_vec_mut = Lrc::make_mut(last_stream_lrc);
-                        *last_vec_mut.last_mut().unwrap() =
-                            (TokenTree::Token(glued_tok), *is_joint);
+                        *last_vec_mut.last_mut().unwrap() = (TokenTree::Token(glued_tok), *spacing);
 
                         // Remove the first token tree from `stream`. (This
                         // is almost always the only tree in `stream`.)
@@ -375,7 +372,7 @@ impl Iterator for Cursor {
     type Item = TokenTree;
 
     fn next(&mut self) -> Option<TokenTree> {
-        self.next_with_joint().map(|(tree, _)| tree)
+        self.next_with_spacing().map(|(tree, _)| tree)
     }
 }
 
@@ -384,7 +381,7 @@ impl Cursor {
         Cursor { stream, index: 0 }
     }
 
-    pub fn next_with_joint(&mut self) -> Option<TreeAndJoint> {
+    pub fn next_with_spacing(&mut self) -> Option<TreeAndSpacing> {
         if self.index < self.stream.len() {
             self.index += 1;
             Some(self.stream.0[self.index - 1].clone())