.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [nightly, beta, stable, 1.60.0]
+        rust: [nightly, beta, stable, 1.61.0]
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "prettyplease"
-version = "0.2.20"
+version = "0.2.21"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 autoexamples = false
 categories = ["development-tools"]
@@ -12,20 +12,20 @@ keywords = ["rustfmt"]
 license = "MIT OR Apache-2.0"
 links = "prettyplease02"
 repository = "https://github.com/dtolnay/prettyplease"
-rust-version = "1.60"
+rust-version = "1.61"
 
 [features]
 verbatim = ["syn/parsing"]
 
 [dependencies]
 proc-macro2 = { version = "1.0.80", default-features = false }
-syn = { version = "2.0.59", default-features = false, features = ["full"] }
+syn = { version = "2.0.76", default-features = false, features = ["full"] }
 
 [dev-dependencies]
 indoc = "2"
 proc-macro2 = { version = "1.0.80", default-features = false }
 quote = { version = "1.0.35", default-features = false }
-syn = { version = "2.0.59", default-features = false, features = ["parsing"] }
+syn = { version = "2.0.76", default-features = false, features = ["parsing"] }
 
 [lib]
 doc-scrape-examples = false

examples/update/update-examples.rs

@@ -38,7 +38,8 @@ fn main() -> Result<()> {
     let mut string = rustc_span::create_session_globals_then(Edition2021, None, || {
         let locale_resources = rustc_driver::DEFAULT_LOCALE_RESOURCES.to_vec();
         let sess = ParseSess::new(locale_resources);
-        let krate = rustc_parse::parse_crate_from_file(&input_path, &sess).unwrap();
+        let mut parser = rustc_parse::new_parser_from_file(&sess, &input_path, None).unwrap();
+        let krate = parser.parse_crate_mod().unwrap();
         rustc_ast_pretty::pprust::crate_to_string_for_macros(&krate)
     });
     string.push('\n');

src/expr.rs

@@ -681,10 +681,16 @@ impl Printer {
         enum ExprVerbatim {
             Empty,
             Ellipsis,
+            Become(Become),
             Builtin(Builtin),
             RawReference(RawReference),
         }
 
+        struct Become {
+            attrs: Vec<Attribute>,
+            tail_call: Expr,
+        }
+
         struct Builtin {
             attrs: Vec<Attribute>,
             name: Ident,
@@ -709,6 +715,11 @@ impl Printer {
                 let lookahead = ahead.lookahead1();
                 if input.is_empty() {
                     Ok(ExprVerbatim::Empty)
+                } else if lookahead.peek(Token![become]) {
+                    input.advance_to(&ahead);
+                    input.parse::<Token![become]>()?;
+                    let tail_call: Expr = input.parse()?;
+                    Ok(ExprVerbatim::Become(Become { attrs, tail_call }))
                 } else if lookahead.peek(kw::builtin) {
                     input.advance_to(&ahead);
                     input.parse::<kw::builtin>()?;
@@ -751,6 +762,12 @@ impl Printer {
             ExprVerbatim::Ellipsis => {
                 self.word("...");
             }
+            ExprVerbatim::Become(expr) => {
+                self.outer_attrs(&expr.attrs);
+                self.word("become");
+                self.nbsp();
+                self.expr(&expr.tail_call);
+            }
             ExprVerbatim::Builtin(expr) => {
                 self.outer_attrs(&expr.attrs);
                 self.word("builtin # ");

src/lib.rs

@@ -320,7 +320,7 @@
 //! these situations with conditional punctuation tokens whose selection can be
 //! deferred and populated after it's known that the group is or is not broken.
 
-#![doc(html_root_url = "https://docs.rs/prettyplease/0.2.20")]
+#![doc(html_root_url = "https://docs.rs/prettyplease/0.2.21")]
 #![allow(
     clippy::cast_possible_wrap,
     clippy::cast_sign_loss,

src/path.rs

@@ -172,12 +172,11 @@ impl Printer {
     }
 
     pub fn qpath(&mut self, qself: &Option<QSelf>, path: &Path, kind: PathKind) {
-        let qself = match qself {
-            Some(qself) => qself,
-            None => {
-                self.path(path, kind);
-                return;
-            }
+        let qself = if let Some(qself) = qself {
+            qself
+        } else {
+            self.path(path, kind);
+            return;
         };
 
         assert!(qself.position < path.segments.len());