Raise edition one more level

Cargo.lock

@@ -521,6 +521,7 @@ dependencies = [
  "limit",
  "mbe",
  "once_cell",
+ "parser",
  "profile",
  "ra-ap-rustc_abi",
  "ra-ap-rustc_parse_format",
@@ -551,6 +552,7 @@ dependencies = [
  "la-arena 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "limit",
  "mbe",
+ "parser",
  "rustc-hash",
  "smallvec",
  "span",

crates/hir-def/Cargo.toml

@@ -44,6 +44,7 @@ cfg.workspace = true
 tt.workspace = true
 limit.workspace = true
 span.workspace = true
+parser.workspace = true
 
 
 [dev-dependencies]

crates/hir-def/src/macro_expansion_tests/mod.rs

@@ -316,8 +316,11 @@ impl ProcMacroExpander for IdentityWhenValidProcMacroExpander {
         _: Span,
         _: Span,
     ) -> Result<Subtree, ProcMacroExpansionError> {
-        let (parse, _) =
+        let (parse, _) = ::mbe::token_tree_to_syntax_node(
-            ::mbe::token_tree_to_syntax_node(subtree, ::mbe::TopEntryPoint::MacroItems);
+            subtree,
+            ::mbe::TopEntryPoint::MacroItems,
+            parser::Edition::Edition2021,
+        );
         if parse.errors().is_empty() {
             Ok(subtree.clone())
         } else {

crates/hir-expand/Cargo.toml

@@ -32,6 +32,7 @@ tt.workspace = true
 mbe.workspace = true
 limit.workspace = true
 span.workspace = true
+parser.workspace = true
 
 [dev-dependencies]
 expect-test = "1.4.0"

crates/hir-expand/src/builtin_derive_macro.rs

@@ -204,7 +204,11 @@ struct BasicAdtInfo {
 }
 
 fn parse_adt(tt: &tt::Subtree, call_site: Span) -> Result<BasicAdtInfo, ExpandError> {
-    let (parsed, tm) = &mbe::token_tree_to_syntax_node(tt, mbe::TopEntryPoint::MacroItems);
+    let (parsed, tm) = &mbe::token_tree_to_syntax_node(
+        tt,
+        mbe::TopEntryPoint::MacroItems,
+        parser::Edition::Edition2021,
+    );
     let macro_items = ast::MacroItems::cast(parsed.syntax_node())
         .ok_or_else(|| ExpandError::other("invalid item definition"))?;
     let item = macro_items.items().next().ok_or_else(|| ExpandError::other("no item found"))?;

crates/hir-expand/src/db.rs

@@ -676,7 +676,7 @@ fn token_tree_to_syntax_node(
         ExpandTo::Type => mbe::TopEntryPoint::Type,
         ExpandTo::Expr => mbe::TopEntryPoint::Expr,
     };
-    mbe::token_tree_to_syntax_node(tt, entry_point)
+    mbe::token_tree_to_syntax_node(tt, entry_point, parser::Edition::Edition2021)
 }
 
 fn check_tt_count(tt: &tt::Subtree) -> Result<(), ExpandResult<()>> {

crates/hir-expand/src/fixup.rs

@@ -417,7 +417,11 @@ mod tests {
         expect.assert_eq(&actual);
 
         // the fixed-up tree should be syntactically valid
-        let (parse, _) = mbe::token_tree_to_syntax_node(&tt, ::mbe::TopEntryPoint::MacroItems);
+        let (parse, _) = mbe::token_tree_to_syntax_node(
+            &tt,
+            ::mbe::TopEntryPoint::MacroItems,
+            parser::Edition::Edition2021,
+        );
         assert!(
             parse.errors().is_empty(),
             "parse has syntax errors. parse tree:\n{:#?}",

crates/mbe/src/expander/matcher.rs

@@ -743,9 +743,11 @@ fn match_meta_var(
 ) -> ExpandResult<Option<Fragment>> {
     let fragment = match kind {
         MetaVarKind::Path => {
-            return input.expect_fragment(parser::PrefixEntryPoint::Path).map(|it| {
+            return input
-                it.map(|it| tt::TokenTree::subtree_or_wrap(it, delim_span)).map(Fragment::Path)
+                .expect_fragment(parser::PrefixEntryPoint::Path, parser::Edition::Edition2021)
-            });
+                .map(|it| {
+                    it.map(|it| tt::TokenTree::subtree_or_wrap(it, delim_span)).map(Fragment::Path)
+                });
         }
         MetaVarKind::Ty => parser::PrefixEntryPoint::Ty,
         MetaVarKind::Pat => parser::PrefixEntryPoint::PatTop,
@@ -770,21 +772,23 @@ fn match_meta_var(
                 }
                 _ => {}
             };
-            return input.expect_fragment(parser::PrefixEntryPoint::Expr).map(|tt| {
+            return input
-                tt.map(|tt| match tt {
+                .expect_fragment(parser::PrefixEntryPoint::Expr, parser::Edition::Edition2021)
-                    tt::TokenTree::Leaf(leaf) => tt::Subtree {
+                .map(|tt| {
-                        delimiter: tt::Delimiter::invisible_spanned(*leaf.span()),
+                    tt.map(|tt| match tt {
-                        token_trees: Box::new([leaf.into()]),
+                        tt::TokenTree::Leaf(leaf) => tt::Subtree {
-                    },
+                            delimiter: tt::Delimiter::invisible_spanned(*leaf.span()),
-                    tt::TokenTree::Subtree(mut s) => {
+                            token_trees: Box::new([leaf.into()]),
-                        if s.delimiter.kind == tt::DelimiterKind::Invisible {
+                        },
-                            s.delimiter.kind = tt::DelimiterKind::Parenthesis;
+                        tt::TokenTree::Subtree(mut s) => {
+                            if s.delimiter.kind == tt::DelimiterKind::Invisible {
+                                s.delimiter.kind = tt::DelimiterKind::Parenthesis;
+                            }
+                            s
                         }
-                        s
+                    })
-                    }
+                    .map(Fragment::Expr)
-                })
+                });
-                .map(Fragment::Expr)
-            });
         }
         MetaVarKind::Ident | MetaVarKind::Tt | MetaVarKind::Lifetime | MetaVarKind::Literal => {
             let tt_result = match kind {
@@ -819,7 +823,7 @@ fn match_meta_var(
             return tt_result.map(|it| Some(Fragment::Tokens(it))).into();
         }
     };
-    input.expect_fragment(fragment).map(|it| it.map(Fragment::Tokens))
+    input.expect_fragment(fragment, parser::Edition::Edition2021).map(|it| it.map(Fragment::Tokens))
 }
 
 fn collect_vars(collector_fun: &mut impl FnMut(SmolStr), pattern: &MetaTemplate) {

crates/mbe/src/syntax_bridge.rs

@@ -119,6 +119,7 @@ where
 pub fn token_tree_to_syntax_node<Ctx>(
     tt: &tt::Subtree<SpanData<Ctx>>,
     entry_point: parser::TopEntryPoint,
+    edition: parser::Edition,
 ) -> (Parse<SyntaxNode>, SpanMap<Ctx>)
 where
     SpanData<Ctx>: Copy + fmt::Debug,
@@ -131,7 +132,7 @@ where
         _ => TokenBuffer::from_subtree(tt),
     };
     let parser_input = to_parser_input(&buffer);
-    let parser_output = entry_point.parse(&parser_input, parser::Edition::Edition2021);
+    let parser_output = entry_point.parse(&parser_input, edition);
     let mut tree_sink = TtTreeSink::new(buffer.begin());
     for event in parser_output.iter() {
         match event {
@@ -194,7 +195,8 @@ where
     let mut res = Vec::new();
 
     while iter.peek_n(0).is_some() {
-        let expanded = iter.expect_fragment(parser::PrefixEntryPoint::Expr);
+        let expanded =
+            iter.expect_fragment(parser::PrefixEntryPoint::Expr, parser::Edition::Edition2021);
 
         res.push(match expanded.value {
             None => break,

crates/mbe/src/tt_iter.rs

@@ -140,10 +140,11 @@ impl<'a, S: Copy + fmt::Debug> TtIter<'a, S> {
     pub(crate) fn expect_fragment(
         &mut self,
         entry_point: parser::PrefixEntryPoint,
+        edition: parser::Edition,
     ) -> ExpandResult<Option<tt::TokenTree<S>>> {
         let buffer = tt::buffer::TokenBuffer::from_tokens(self.inner.as_slice());
         let parser_input = to_parser_input(&buffer);
-        let tree_traversal = entry_point.parse(&parser_input, parser::Edition::Edition2021);
+        let tree_traversal = entry_point.parse(&parser_input, edition);
         let mut cursor = buffer.begin();
         let mut error = false;
         for step in tree_traversal.iter() {

crates/syntax/src/lib.rs

@@ -172,7 +172,7 @@ pub use crate::ast::SourceFile;
 impl SourceFile {
     pub fn parse(text: &str) -> Parse<SourceFile> {
         let _p = tracing::span!(tracing::Level::INFO, "SourceFile::parse").entered();
-        let (green, errors) = parsing::parse_text(text);
+        let (green, errors) = parsing::parse_text(text, parser::Edition::Edition2021);
         let root = SyntaxNode::new_root(green.clone());
 
         assert_eq!(root.kind(), SyntaxKind::SOURCE_FILE);
@@ -185,7 +185,10 @@ impl SourceFile {
 }
 
 impl ast::TokenTree {
-    pub fn reparse_as_comma_separated_expr(self) -> Parse<ast::MacroEagerInput> {
+    pub fn reparse_as_comma_separated_expr(
+        self,
+        edition: parser::Edition,
+    ) -> Parse<ast::MacroEagerInput> {
         let tokens = self.syntax().descendants_with_tokens().filter_map(NodeOrToken::into_token);
 
         let mut parser_input = parser::Input::default();
@@ -219,8 +222,7 @@ impl ast::TokenTree {
             }
         }
 
-        let parser_output = parser::TopEntryPoint::MacroEagerInput
+        let parser_output = parser::TopEntryPoint::MacroEagerInput.parse(&parser_input, edition);
-            .parse(&parser_input, parser::Edition::Edition2021);
 
         let mut tokens =
             self.syntax().descendants_with_tokens().filter_map(NodeOrToken::into_token);

crates/syntax/src/parsing.rs

@@ -9,12 +9,11 @@ use crate::{syntax_node::GreenNode, SyntaxError, SyntaxTreeBuilder};
 
 pub(crate) use crate::parsing::reparsing::incremental_reparse;
 
-pub(crate) fn parse_text(text: &str) -> (GreenNode, Vec<SyntaxError>) {
+pub(crate) fn parse_text(text: &str, edition: parser::Edition) -> (GreenNode, Vec<SyntaxError>) {
     let _p = tracing::span!(tracing::Level::INFO, "parse_text").entered();
     let lexed = parser::LexedStr::new(text);
     let parser_input = lexed.to_input();
-    let parser_output =
+    let parser_output = parser::TopEntryPoint::SourceFile.parse(&parser_input, edition);
-        parser::TopEntryPoint::SourceFile.parse(&parser_input, parser::Edition::Edition2021);
     let (node, errors, _eof) = build_tree(lexed, parser_output);
     (node, errors)
 }

crates/syntax/src/parsing/reparsing.rs

@@ -26,7 +26,9 @@ pub(crate) fn incremental_reparse(
         return Some((green, merge_errors(errors, new_errors, old_range, edit), old_range));
     }
 
-    if let Some((green, new_errors, old_range)) = reparse_block(node, edit) {
+    if let Some((green, new_errors, old_range)) =
+        reparse_block(node, edit, parser::Edition::Edition2021)
+    {
         return Some((green, merge_errors(errors, new_errors, old_range, edit), old_range));
     }
     None
@@ -84,6 +86,7 @@ fn reparse_token(
 fn reparse_block(
     root: &SyntaxNode,
     edit: &Indel,
+    edition: parser::Edition,
 ) -> Option<(GreenNode, Vec<SyntaxError>, TextRange)> {
     let (node, reparser) = find_reparsable_node(root, edit.delete)?;
     let text = get_text_after_edit(node.clone().into(), edit);
@@ -94,7 +97,7 @@ fn reparse_block(
         return None;
     }
 
-    let tree_traversal = reparser.parse(&parser_input, parser::Edition::Edition2021);
+    let tree_traversal = reparser.parse(&parser_input, edition);
 
     let (green, new_parser_errors, _eof) = build_tree(lexed, tree_traversal);