Rename IsJoint -> Spacing

To match better naming from proc-macro

compiler/rustc_parse/src/lexer/mod.rs

@@ -1,6 +1,6 @@
 use rustc_ast::ast::AttrStyle;
 use rustc_ast::token::{self, CommentKind, Token, TokenKind};
-use rustc_ast::tokenstream::{IsJoint, TokenStream};
+use rustc_ast::tokenstream::{Spacing, TokenStream};
 use rustc_errors::{error_code, Applicability, DiagnosticBuilder, FatalError, PResult};
 use rustc_lexer::unescape::{self, Mode};
 use rustc_lexer::{Base, DocStyle, RawStrError};
@@ -54,8 +54,8 @@ impl<'a> StringReader<'a> {
     }
 
     /// Returns the next token, and info about preceding whitespace, if any.
-    fn next_token(&mut self) -> (IsJoint, Token) {
-        let mut is_joint = IsJoint::Joint;
+    fn next_token(&mut self) -> (Spacing, Token) {
+        let mut spacing = Spacing::Joint;
 
         // Skip `#!` at the start of the file
         let start_src_index = self.src_index(self.pos);
@@ -64,7 +64,7 @@ impl<'a> StringReader<'a> {
         if is_beginning_of_file {
             if let Some(shebang_len) = rustc_lexer::strip_shebang(text) {
                 self.pos = self.pos + BytePos::from_usize(shebang_len);
-                is_joint = IsJoint::NonJoint;
+                spacing = Spacing::Alone;
             }
         }
 
@@ -75,7 +75,7 @@ impl<'a> StringReader<'a> {
 
             if text.is_empty() {
                 let span = self.mk_sp(self.pos, self.pos);
-                return (is_joint, Token::new(token::Eof, span));
+                return (spacing, Token::new(token::Eof, span));
             }
 
             let token = rustc_lexer::first_token(text);
@@ -88,9 +88,9 @@ impl<'a> StringReader<'a> {
             match self.cook_lexer_token(token.kind, start) {
                 Some(kind) => {
                     let span = self.mk_sp(start, self.pos);
-                    return (is_joint, Token::new(kind, span));
+                    return (spacing, Token::new(kind, span));
                 }
-                None => is_joint = IsJoint::NonJoint,
+                None => spacing = Spacing::Alone,
             }
         }
     }

compiler/rustc_parse/src/lexer/tokentrees.rs

@@ -3,8 +3,8 @@ use super::{StringReader, UnmatchedBrace};
 use rustc_ast::token::{self, DelimToken, Token};
 use rustc_ast::tokenstream::{
     DelimSpan,
-    IsJoint::{self, *},
-    TokenStream, TokenTree, TreeAndJoint,
+    Spacing::{self, *},
+    TokenStream, TokenTree, TreeAndSpacing,
 };
 use rustc_ast_pretty::pprust::token_to_string;
 use rustc_data_structures::fx::FxHashMap;
@@ -77,7 +77,7 @@ impl<'a> TokenTreesReader<'a> {
         }
     }
 
-    fn parse_token_tree(&mut self) -> PResult<'a, TreeAndJoint> {
+    fn parse_token_tree(&mut self) -> PResult<'a, TreeAndSpacing> {
         let sm = self.string_reader.sess.source_map();
 
         match self.token.kind {
@@ -262,29 +262,29 @@ impl<'a> TokenTreesReader<'a> {
             }
             _ => {
                 let tt = TokenTree::Token(self.token.take());
-                let mut is_joint = self.bump();
+                let mut spacing = self.bump();
                 if !self.token.is_op() {
-                    is_joint = NonJoint;
+                    spacing = Alone;
                 }
-                Ok((tt, is_joint))
+                Ok((tt, spacing))
             }
         }
     }
 
-    fn bump(&mut self) -> IsJoint {
-        let (joint_to_prev, token) = self.string_reader.next_token();
+    fn bump(&mut self) -> Spacing {
+        let (spacing, token) = self.string_reader.next_token();
         self.token = token;
-        joint_to_prev
+        spacing
     }
 }
 
 #[derive(Default)]
 struct TokenStreamBuilder {
-    buf: Vec<TreeAndJoint>,
+    buf: Vec<TreeAndSpacing>,
 }
 
 impl TokenStreamBuilder {
-    fn push(&mut self, (tree, joint): TreeAndJoint) {
+    fn push(&mut self, (tree, joint): TreeAndSpacing) {
         if let Some((TokenTree::Token(prev_token), Joint)) = self.buf.last() {
             if let TokenTree::Token(token) = &tree {
                 if let Some(glued) = prev_token.glue(token) {

compiler/rustc_parse/src/lib.rs

@@ -8,7 +8,7 @@
 
 use rustc_ast as ast;
 use rustc_ast::token::{self, DelimToken, Nonterminal, Token, TokenKind};
-use rustc_ast::tokenstream::{self, IsJoint, TokenStream, TokenTree};
+use rustc_ast::tokenstream::{self, Spacing, TokenStream, TokenTree};
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::sync::Lrc;
 use rustc_errors::{Diagnostic, FatalError, Level, PResult};
@@ -437,7 +437,7 @@ pub fn tokenstream_probably_equal_for_proc_macro(
             // issue #75734 tracks resolving this.
             nt_to_tokenstream(nt, sess, *span).into_trees()
         } else {
-            TokenStream::new(vec![(tree, IsJoint::NonJoint)]).into_trees()
+            TokenStream::new(vec![(tree, Spacing::Alone)]).into_trees()
         }
     };
 

compiler/rustc_parse/src/parser/mod.rs

@@ -15,7 +15,7 @@ pub use path::PathStyle;
 
 use rustc_ast::ptr::P;
 use rustc_ast::token::{self, DelimToken, Token, TokenKind};
-use rustc_ast::tokenstream::{self, DelimSpan, TokenStream, TokenTree, TreeAndJoint};
+use rustc_ast::tokenstream::{self, DelimSpan, TokenStream, TokenTree, TreeAndSpacing};
 use rustc_ast::DUMMY_NODE_ID;
 use rustc_ast::{self as ast, AttrStyle, AttrVec, Const, CrateSugar, Extern, Unsafe};
 use rustc_ast::{Async, MacArgs, MacDelimiter, Mutability, StrLit, Visibility, VisibilityKind};
@@ -118,7 +118,7 @@ impl<'a> Drop for Parser<'a> {
 struct TokenCursor {
     frame: TokenCursorFrame,
     stack: Vec<TokenCursorFrame>,
-    cur_token: Option<TreeAndJoint>,
+    cur_token: Option<TreeAndSpacing>,
     collecting: Option<Collecting>,
 }
 
@@ -136,7 +136,7 @@ struct TokenCursorFrame {
 struct Collecting {
     /// Holds the current tokens captured during the most
     /// recent call to `collect_tokens`
-    buf: Vec<TreeAndJoint>,
+    buf: Vec<TreeAndSpacing>,
     /// The depth of the `TokenCursor` stack at the time
     /// collection was started. When we encounter a `TokenTree::Delimited`,
     /// we want to record the `TokenTree::Delimited` itself,
@@ -167,7 +167,7 @@ impl TokenCursor {
             let tree = if !self.frame.open_delim {
                 self.frame.open_delim = true;
                 TokenTree::open_tt(self.frame.span, self.frame.delim).into()
-            } else if let Some(tree) = self.frame.tree_cursor.next_with_joint() {
+            } else if let Some(tree) = self.frame.tree_cursor.next_with_spacing() {
                 tree
             } else if !self.frame.close_delim {
                 self.frame.close_delim = true;
@@ -1154,7 +1154,7 @@ impl<'a> Parser<'a> {
         f: impl FnOnce(&mut Self) -> PResult<'a, R>,
     ) -> PResult<'a, (R, TokenStream)> {
         // Record all tokens we parse when parsing this item.
-        let tokens: Vec<TreeAndJoint> = self.token_cursor.cur_token.clone().into_iter().collect();
+        let tokens: Vec<TreeAndSpacing> = self.token_cursor.cur_token.clone().into_iter().collect();
         debug!("collect_tokens: starting with {:?}", tokens);
 
         // We need special handling for the case where `collect_tokens` is called