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authorLukas Wirth <lukastw97@gmail.com>2025-03-14 13:54:17 +0100
committerLukas Wirth <lukastw97@gmail.com>2025-03-16 16:26:07 +0100
commit68d08a542c8c60ed33810c5945cc4fa282a84500 (patch)
tree4520b0b12be19635f34769e2f828d7fe135e1479
parenta68616f98dc5b9c1ce4d56477d152065d8d05cbe (diff)
downloadrust-68d08a542c8c60ed33810c5945cc4fa282a84500.tar.gz
rust-68d08a542c8c60ed33810c5945cc4fa282a84500.zip
internal: Render root syntax contexts more clearly
-rw-r--r--src/tools/rust-analyzer/crates/edition/src/lib.rs9
-rw-r--r--src/tools/rust-analyzer/crates/hir-def/src/item_tree/tests.rs2
-rw-r--r--src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mbe.rs22
-rw-r--r--src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/proc_macros.rs6
-rw-r--r--src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs4
-rw-r--r--src/tools/rust-analyzer/crates/mbe/src/tests.rs160
-rw-r--r--src/tools/rust-analyzer/crates/proc-macro-srv/src/tests/mod.rs130
-rw-r--r--src/tools/rust-analyzer/crates/span/src/hygiene.rs8
8 files changed, 177 insertions, 164 deletions
diff --git a/src/tools/rust-analyzer/crates/edition/src/lib.rs b/src/tools/rust-analyzer/crates/edition/src/lib.rs
index a2269bf54d4..04e65fc378f 100644
--- a/src/tools/rust-analyzer/crates/edition/src/lib.rs
+++ b/src/tools/rust-analyzer/crates/edition/src/lib.rs
@@ -41,6 +41,15 @@ impl Edition {
         self >= Edition::Edition2018
     }
 
+    pub fn number(&self) -> usize {
+        match self {
+            Edition::Edition2015 => 2015,
+            Edition::Edition2018 => 2018,
+            Edition::Edition2021 => 2021,
+            Edition::Edition2024 => 2024,
+        }
+    }
+
     pub fn iter() -> impl Iterator<Item = Edition> {
         [Edition::Edition2015, Edition::Edition2018, Edition::Edition2021, Edition::Edition2024]
             .iter()
diff --git a/src/tools/rust-analyzer/crates/hir-def/src/item_tree/tests.rs b/src/tools/rust-analyzer/crates/hir-def/src/item_tree/tests.rs
index 47d374a2bee..0651a5ed552 100644
--- a/src/tools/rust-analyzer/crates/hir-def/src/item_tree/tests.rs
+++ b/src/tools/rust-analyzer/crates/hir-def/src/item_tree/tests.rs
@@ -270,7 +270,7 @@ m!();
             // AstId: 2
             pub macro m2 { ... }
 
-            // AstId: 3, SyntaxContextId: 4294967037, ExpandTo: Items
+            // AstId: 3, SyntaxContextId: ROOT2021, ExpandTo: Items
             m!(...);
         "#]],
     );
diff --git a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mbe.rs b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mbe.rs
index 66e344d7245..bf0902a7e59 100644
--- a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mbe.rs
+++ b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mbe.rs
@@ -35,7 +35,7 @@ macro_rules! f {
     };
 }
 
-struct#0:1@58..64#20480# MyTraitMap2#0:2@31..42#4294967037# {#0:1@72..73#20480#
+struct#0:1@58..64#20480# MyTraitMap2#0:2@31..42#ROOT2021# {#0:1@72..73#20480#
     map#0:1@86..89#20480#:#0:1@89..90#20480# #0:1@89..90#20480#::#0:1@91..93#20480#std#0:1@93..96#20480#::#0:1@96..98#20480#collections#0:1@98..109#20480#::#0:1@109..111#20480#HashSet#0:1@111..118#20480#<#0:1@118..119#20480#(#0:1@119..120#20480#)#0:1@120..121#20480#>#0:1@121..122#20480#,#0:1@122..123#20480#
 }#0:1@132..133#20480#
 "#]],
@@ -75,12 +75,12 @@ macro_rules! f {
     };
 }
 
-fn#0:2@30..32#4294967037# main#0:2@33..37#4294967037#(#0:2@37..38#4294967037#)#0:2@38..39#4294967037# {#0:2@40..41#4294967037#
-    1#0:2@50..51#4294967037#;#0:2@51..52#4294967037#
-    1.0#0:2@61..64#4294967037#;#0:2@64..65#4294967037#
-    (#0:2@74..75#4294967037#(#0:2@75..76#4294967037#1#0:2@76..77#4294967037#,#0:2@77..78#4294967037# )#0:2@78..79#4294967037#,#0:2@79..80#4294967037# )#0:2@80..81#4294967037#.#0:2@81..82#4294967037#0#0:2@82..85#4294967037#.#0:2@82..85#4294967037#0#0:2@82..85#4294967037#;#0:2@85..86#4294967037#
-    let#0:2@95..98#4294967037# x#0:2@99..100#4294967037# =#0:2@101..102#4294967037# 1#0:2@103..104#4294967037#;#0:2@104..105#4294967037#
-}#0:2@110..111#4294967037#
+fn#0:2@30..32#ROOT2021# main#0:2@33..37#ROOT2021#(#0:2@37..38#ROOT2021#)#0:2@38..39#ROOT2021# {#0:2@40..41#ROOT2021#
+    1#0:2@50..51#ROOT2021#;#0:2@51..52#ROOT2021#
+    1.0#0:2@61..64#ROOT2021#;#0:2@64..65#ROOT2021#
+    (#0:2@74..75#ROOT2021#(#0:2@75..76#ROOT2021#1#0:2@76..77#ROOT2021#,#0:2@77..78#ROOT2021# )#0:2@78..79#ROOT2021#,#0:2@79..80#ROOT2021# )#0:2@80..81#ROOT2021#.#0:2@81..82#ROOT2021#0#0:2@82..85#ROOT2021#.#0:2@82..85#ROOT2021#0#0:2@82..85#ROOT2021#;#0:2@85..86#ROOT2021#
+    let#0:2@95..98#ROOT2021# x#0:2@99..100#ROOT2021# =#0:2@101..102#ROOT2021# 1#0:2@103..104#ROOT2021#;#0:2@104..105#ROOT2021#
+}#0:2@110..111#ROOT2021#
 
 
 "#]],
@@ -171,7 +171,7 @@ fn main(foo: ()) {
     }
 
     fn main(foo: ()) {
-        /* error: unresolved macro unresolved */"helloworld!"#0:3@236..321#4294967037#;
+        /* error: unresolved macro unresolved */"helloworld!"#0:3@236..321#ROOT2021#;
     }
 }
 
@@ -197,7 +197,7 @@ macro_rules! mk_struct {
 #[macro_use]
 mod foo;
 
-struct#1:1@59..65#20480# Foo#0:2@32..35#4294967037#(#1:1@70..71#20480#u32#0:2@41..44#4294967037#)#1:1@74..75#20480#;#1:1@75..76#20480#
+struct#1:1@59..65#20480# Foo#0:2@32..35#ROOT2021#(#1:1@70..71#20480#u32#0:2@41..44#ROOT2021#)#1:1@74..75#20480#;#1:1@75..76#20480#
 "#]],
     );
 }
@@ -424,8 +424,8 @@ macro_rules! m {
     ($($i:ident),*) => ( impl Bar { $(fn $i() {})* } );
 }
 impl#\20480# Bar#\20480# {#\20480#
-    fn#\20480# foo#\4294967037#(#\20480#)#\20480# {#\20480#}#\20480#
-    fn#\20480# bar#\4294967037#(#\20480#)#\20480# {#\20480#}#\20480#
+    fn#\20480# foo#\ROOT2021#(#\20480#)#\20480# {#\20480#}#\20480#
+    fn#\20480# bar#\ROOT2021#(#\20480#)#\20480# {#\20480#}#\20480#
 }#\20480#
 "#]],
     );
diff --git a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/proc_macros.rs b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/proc_macros.rs
index 650807fb4ac..3009b724996 100644
--- a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/proc_macros.rs
+++ b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/proc_macros.rs
@@ -181,9 +181,9 @@ fn foo(&self) {
     self.0. 1;
 }
 
-fn#0:1@45..47#4294967037# foo#0:1@48..51#4294967037#(#0:1@51..52#4294967037#&#0:1@52..53#4294967037#self#0:1@53..57#4294967037# )#0:1@57..58#4294967037# {#0:1@59..60#4294967037#
-    self#0:1@65..69#4294967037# .#0:1@69..70#4294967037#0#0:1@70..71#4294967037#.#0:1@71..72#4294967037#1#0:1@73..74#4294967037#;#0:1@74..75#4294967037#
-}#0:1@76..77#4294967037#"#]],
+fn#0:1@45..47#ROOT2021# foo#0:1@48..51#ROOT2021#(#0:1@51..52#ROOT2021#&#0:1@52..53#ROOT2021#self#0:1@53..57#ROOT2021# )#0:1@57..58#ROOT2021# {#0:1@59..60#ROOT2021#
+    self#0:1@65..69#ROOT2021# .#0:1@69..70#ROOT2021#0#0:1@70..71#ROOT2021#.#0:1@71..72#ROOT2021#1#0:1@73..74#ROOT2021#;#0:1@74..75#ROOT2021#
+}#0:1@76..77#ROOT2021#"#]],
     );
 }
 
diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs
index 859f6f7b144..7e159d999dd 100644
--- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs
+++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs
@@ -277,8 +277,8 @@ mod tests {
         assert_eq!(quoted.to_string(), "hello");
         let t = format!("{quoted:#?}");
         expect![[r#"
-            SUBTREE $$ 937550:0@0..0#4294967037 937550:0@0..0#4294967037
-              IDENT   hello 937550:0@0..0#4294967037"#]]
+            SUBTREE $$ 937550:0@0..0#ROOT2021 937550:0@0..0#ROOT2021
+              IDENT   hello 937550:0@0..0#ROOT2021"#]]
         .assert_eq(&t);
     }
 
diff --git a/src/tools/rust-analyzer/crates/mbe/src/tests.rs b/src/tools/rust-analyzer/crates/mbe/src/tests.rs
index 7d9538a4b4d..763ec140526 100644
--- a/src/tools/rust-analyzer/crates/mbe/src/tests.rs
+++ b/src/tools/rust-analyzer/crates/mbe/src/tests.rs
@@ -109,8 +109,8 @@ fn unbalanced_brace() {
 "#,
         r#""#,
         expect![[r#"
-            SUBTREE $$ 1:0@0..0#4294967037 1:0@0..0#4294967037
-              SUBTREE {} 0:0@9..10#4294967037 0:0@11..12#4294967037
+            SUBTREE $$ 1:0@0..0#ROOT2021 1:0@0..0#ROOT2021
+              SUBTREE {} 0:0@9..10#ROOT2021 0:0@11..12#ROOT2021
 
             {}"#]],
     );
@@ -132,25 +132,25 @@ fn token_mapping_smoke_test() {
 struct MyTraitMap2
 "#,
         expect![[r#"
-            SUBTREE $$ 1:0@0..20#4294967037 1:0@0..20#4294967037
-              IDENT   struct 0:0@34..40#4294967037
-              IDENT   MyTraitMap2 1:0@8..19#4294967037
-              SUBTREE {} 0:0@48..49#4294967037 0:0@100..101#4294967037
-                IDENT   map 0:0@58..61#4294967037
-                PUNCH   : [alone] 0:0@61..62#4294967037
-                PUNCH   : [joint] 0:0@63..64#4294967037
-                PUNCH   : [alone] 0:0@64..65#4294967037
-                IDENT   std 0:0@65..68#4294967037
-                PUNCH   : [joint] 0:0@68..69#4294967037
-                PUNCH   : [alone] 0:0@69..70#4294967037
-                IDENT   collections 0:0@70..81#4294967037
-                PUNCH   : [joint] 0:0@81..82#4294967037
-                PUNCH   : [alone] 0:0@82..83#4294967037
-                IDENT   HashSet 0:0@83..90#4294967037
-                PUNCH   < [alone] 0:0@90..91#4294967037
-                SUBTREE () 0:0@91..92#4294967037 0:0@92..93#4294967037
-                PUNCH   > [joint] 0:0@93..94#4294967037
-                PUNCH   , [alone] 0:0@94..95#4294967037
+            SUBTREE $$ 1:0@0..20#ROOT2021 1:0@0..20#ROOT2021
+              IDENT   struct 0:0@34..40#ROOT2021
+              IDENT   MyTraitMap2 1:0@8..19#ROOT2021
+              SUBTREE {} 0:0@48..49#ROOT2021 0:0@100..101#ROOT2021
+                IDENT   map 0:0@58..61#ROOT2021
+                PUNCH   : [alone] 0:0@61..62#ROOT2021
+                PUNCH   : [joint] 0:0@63..64#ROOT2021
+                PUNCH   : [alone] 0:0@64..65#ROOT2021
+                IDENT   std 0:0@65..68#ROOT2021
+                PUNCH   : [joint] 0:0@68..69#ROOT2021
+                PUNCH   : [alone] 0:0@69..70#ROOT2021
+                IDENT   collections 0:0@70..81#ROOT2021
+                PUNCH   : [joint] 0:0@81..82#ROOT2021
+                PUNCH   : [alone] 0:0@82..83#ROOT2021
+                IDENT   HashSet 0:0@83..90#ROOT2021
+                PUNCH   < [alone] 0:0@90..91#ROOT2021
+                SUBTREE () 0:0@91..92#ROOT2021 0:0@92..93#ROOT2021
+                PUNCH   > [joint] 0:0@93..94#ROOT2021
+                PUNCH   , [alone] 0:0@94..95#ROOT2021
 
             struct MyTraitMap2 {
                 map: ::std::collections::HashSet<()>,
@@ -179,28 +179,28 @@ fn main() {
 }
 "#,
         expect![[r#"
-            SUBTREE $$ 1:0@0..63#4294967037 1:0@0..63#4294967037
-              IDENT   fn 1:0@1..3#4294967037
-              IDENT   main 1:0@4..8#4294967037
-              SUBTREE () 1:0@8..9#4294967037 1:0@9..10#4294967037
-              SUBTREE {} 1:0@11..12#4294967037 1:0@61..62#4294967037
-                LITERAL Integer 1 1:0@17..18#4294967037
-                PUNCH   ; [alone] 1:0@18..19#4294967037
-                LITERAL Float 1.0 1:0@24..27#4294967037
-                PUNCH   ; [alone] 1:0@27..28#4294967037
-                SUBTREE () 1:0@33..34#4294967037 1:0@39..40#4294967037
-                  SUBTREE () 1:0@34..35#4294967037 1:0@37..38#4294967037
-                    LITERAL Integer 1 1:0@35..36#4294967037
-                    PUNCH   , [alone] 1:0@36..37#4294967037
-                  PUNCH   , [alone] 1:0@38..39#4294967037
-                PUNCH   . [alone] 1:0@40..41#4294967037
-                LITERAL Float 0.0 1:0@41..44#4294967037
-                PUNCH   ; [alone] 1:0@44..45#4294967037
-                IDENT   let 1:0@50..53#4294967037
-                IDENT   x 1:0@54..55#4294967037
-                PUNCH   = [alone] 1:0@56..57#4294967037
-                LITERAL Integer 1 1:0@58..59#4294967037
-                PUNCH   ; [alone] 1:0@59..60#4294967037
+            SUBTREE $$ 1:0@0..63#ROOT2021 1:0@0..63#ROOT2021
+              IDENT   fn 1:0@1..3#ROOT2021
+              IDENT   main 1:0@4..8#ROOT2021
+              SUBTREE () 1:0@8..9#ROOT2021 1:0@9..10#ROOT2021
+              SUBTREE {} 1:0@11..12#ROOT2021 1:0@61..62#ROOT2021
+                LITERAL Integer 1 1:0@17..18#ROOT2021
+                PUNCH   ; [alone] 1:0@18..19#ROOT2021
+                LITERAL Float 1.0 1:0@24..27#ROOT2021
+                PUNCH   ; [alone] 1:0@27..28#ROOT2021
+                SUBTREE () 1:0@33..34#ROOT2021 1:0@39..40#ROOT2021
+                  SUBTREE () 1:0@34..35#ROOT2021 1:0@37..38#ROOT2021
+                    LITERAL Integer 1 1:0@35..36#ROOT2021
+                    PUNCH   , [alone] 1:0@36..37#ROOT2021
+                  PUNCH   , [alone] 1:0@38..39#ROOT2021
+                PUNCH   . [alone] 1:0@40..41#ROOT2021
+                LITERAL Float 0.0 1:0@41..44#ROOT2021
+                PUNCH   ; [alone] 1:0@44..45#ROOT2021
+                IDENT   let 1:0@50..53#ROOT2021
+                IDENT   x 1:0@54..55#ROOT2021
+                PUNCH   = [alone] 1:0@56..57#ROOT2021
+                LITERAL Integer 1 1:0@58..59#ROOT2021
+                PUNCH   ; [alone] 1:0@59..60#ROOT2021
 
             fn main(){
                 1;
@@ -226,14 +226,14 @@ fn expr_2021() {
     const { 1 },
 "#,
         expect![[r#"
-            SUBTREE $$ 1:0@0..25#4294967037 1:0@0..25#4294967037
-              IDENT   _ 1:0@5..6#4294967037
-              PUNCH   ; [joint] 0:0@36..37#4294967037
-              SUBTREE () 0:0@34..35#4294967037 0:0@34..35#4294967037
-                IDENT   const 1:0@12..17#4294967037
-                SUBTREE {} 1:0@18..19#4294967037 1:0@22..23#4294967037
-                  LITERAL Integer 1 1:0@20..21#4294967037
-              PUNCH   ; [alone] 0:0@39..40#4294967037
+            SUBTREE $$ 1:0@0..25#ROOT2021 1:0@0..25#ROOT2021
+              IDENT   _ 1:0@5..6#ROOT2021
+              PUNCH   ; [joint] 0:0@36..37#ROOT2021
+              SUBTREE () 0:0@34..35#ROOT2021 0:0@34..35#ROOT2021
+                IDENT   const 1:0@12..17#ROOT2021
+                SUBTREE {} 1:0@18..19#ROOT2021 1:0@22..23#ROOT2021
+                  LITERAL Integer 1 1:0@20..21#ROOT2021
+              PUNCH   ; [alone] 0:0@39..40#ROOT2021
 
             _;
             (const  {
@@ -254,13 +254,13 @@ fn expr_2021() {
         expect![[r#"
             ExpandError {
                 inner: (
-                    1:0@5..6#4294967037,
+                    1:0@5..6#ROOT2021,
                     NoMatchingRule,
                 ),
             }
 
-            SUBTREE $$ 1:0@0..8#4294967037 1:0@0..8#4294967037
-              PUNCH   ; [alone] 0:0@39..40#4294967037
+            SUBTREE $$ 1:0@0..8#ROOT2021 1:0@0..8#ROOT2021
+              PUNCH   ; [alone] 0:0@39..40#ROOT2021
 
             ;"#]],
     );
@@ -278,13 +278,13 @@ fn expr_2021() {
         expect![[r#"
             ExpandError {
                 inner: (
-                    1:0@5..10#4294967037,
+                    1:0@5..10#ROOT2021,
                     NoMatchingRule,
                 ),
             }
 
-            SUBTREE $$ 1:0@0..18#4294967037 1:0@0..18#4294967037
-              PUNCH   ; [alone] 0:0@39..40#4294967037
+            SUBTREE $$ 1:0@0..18#ROOT2021 1:0@0..18#ROOT2021
+              PUNCH   ; [alone] 0:0@39..40#ROOT2021
 
             ;"#]],
     );
@@ -304,26 +304,26 @@ fn expr_2021() {
     break 'foo bar,
 "#,
         expect![[r#"
-            SUBTREE $$ 1:0@0..76#4294967037 1:0@0..76#4294967037
-              LITERAL Integer 4 1:0@5..6#4294967037
-              PUNCH   ; [joint] 0:0@41..42#4294967037
-              LITERAL Str literal 1:0@12..21#4294967037
-              PUNCH   ; [joint] 0:0@41..42#4294967037
-              SUBTREE () 0:0@39..40#4294967037 0:0@39..40#4294967037
-                IDENT   funcall 1:0@27..34#4294967037
-                SUBTREE () 1:0@34..35#4294967037 1:0@35..36#4294967037
-              PUNCH   ; [joint] 0:0@41..42#4294967037
-              SUBTREE () 0:0@39..40#4294967037 0:0@39..40#4294967037
-                IDENT   future 1:0@42..48#4294967037
-                PUNCH   . [alone] 1:0@48..49#4294967037
-                IDENT   await 1:0@49..54#4294967037
-              PUNCH   ; [joint] 0:0@41..42#4294967037
-              SUBTREE () 0:0@39..40#4294967037 0:0@39..40#4294967037
-                IDENT   break 1:0@60..65#4294967037
-                PUNCH   ' [joint] 1:0@66..67#4294967037
-                IDENT   foo 1:0@67..70#4294967037
-                IDENT   bar 1:0@71..74#4294967037
-              PUNCH   ; [alone] 0:0@44..45#4294967037
+            SUBTREE $$ 1:0@0..76#ROOT2021 1:0@0..76#ROOT2021
+              LITERAL Integer 4 1:0@5..6#ROOT2021
+              PUNCH   ; [joint] 0:0@41..42#ROOT2021
+              LITERAL Str literal 1:0@12..21#ROOT2021
+              PUNCH   ; [joint] 0:0@41..42#ROOT2021
+              SUBTREE () 0:0@39..40#ROOT2021 0:0@39..40#ROOT2021
+                IDENT   funcall 1:0@27..34#ROOT2021
+                SUBTREE () 1:0@34..35#ROOT2021 1:0@35..36#ROOT2021
+              PUNCH   ; [joint] 0:0@41..42#ROOT2021
+              SUBTREE () 0:0@39..40#ROOT2021 0:0@39..40#ROOT2021
+                IDENT   future 1:0@42..48#ROOT2021
+                PUNCH   . [alone] 1:0@48..49#ROOT2021
+                IDENT   await 1:0@49..54#ROOT2021
+              PUNCH   ; [joint] 0:0@41..42#ROOT2021
+              SUBTREE () 0:0@39..40#ROOT2021 0:0@39..40#ROOT2021
+                IDENT   break 1:0@60..65#ROOT2021
+                PUNCH   ' [joint] 1:0@66..67#ROOT2021
+                IDENT   foo 1:0@67..70#ROOT2021
+                IDENT   bar 1:0@71..74#ROOT2021
+              PUNCH   ; [alone] 0:0@44..45#ROOT2021
 
             4;
             "literal";
@@ -345,13 +345,13 @@ fn expr_2021() {
         expect![[r#"
             ExpandError {
                 inner: (
-                    1:0@5..6#4294967037,
+                    1:0@5..6#ROOT2021,
                     NoMatchingRule,
                 ),
             }
 
-            SUBTREE $$ 1:0@0..8#4294967037 1:0@0..8#4294967037
-              PUNCH   ; [alone] 0:0@44..45#4294967037
+            SUBTREE $$ 1:0@0..8#ROOT2021 1:0@0..8#ROOT2021
+              PUNCH   ; [alone] 0:0@44..45#ROOT2021
 
             ;"#]],
     );
diff --git a/src/tools/rust-analyzer/crates/proc-macro-srv/src/tests/mod.rs b/src/tools/rust-analyzer/crates/proc-macro-srv/src/tests/mod.rs
index 716d351271e..b2ffa4ca80a 100644
--- a/src/tools/rust-analyzer/crates/proc-macro-srv/src/tests/mod.rs
+++ b/src/tools/rust-analyzer/crates/proc-macro-srv/src/tests/mod.rs
@@ -12,7 +12,7 @@ fn test_derive_empty() {
         "DeriveEmpty",
         r#"struct S;"#,
         expect!["SUBTREE $$ 1 1"],
-        expect!["SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037"],
+        expect!["SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021"],
     );
 }
 
@@ -29,12 +29,12 @@ fn test_derive_error() {
                 LITERAL Str #[derive(DeriveError)] struct S ; 1
               PUNCH   ; [alone] 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   compile_error 42:2@0..100#4294967037
-              PUNCH   ! [alone] 42:2@0..100#4294967037
-              SUBTREE () 42:2@0..100#4294967037 42:2@0..100#4294967037
-                LITERAL Str #[derive(DeriveError)] struct S ; 42:2@0..100#4294967037
-              PUNCH   ; [alone] 42:2@0..100#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   compile_error 42:2@0..100#ROOT2021
+              PUNCH   ! [alone] 42:2@0..100#ROOT2021
+              SUBTREE () 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+                LITERAL Str #[derive(DeriveError)] struct S ; 42:2@0..100#ROOT2021
+              PUNCH   ; [alone] 42:2@0..100#ROOT2021"#]],
     );
 }
 
@@ -53,14 +53,14 @@ fn test_fn_like_macro_noop() {
               PUNCH   , [alone] 1
               SUBTREE [] 1 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   ident 42:2@0..5#4294967037
-              PUNCH   , [alone] 42:2@5..6#4294967037
-              LITERAL Integer 0 42:2@7..8#4294967037
-              PUNCH   , [alone] 42:2@8..9#4294967037
-              LITERAL Integer 1 42:2@10..11#4294967037
-              PUNCH   , [alone] 42:2@11..12#4294967037
-              SUBTREE [] 42:2@13..14#4294967037 42:2@14..15#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   ident 42:2@0..5#ROOT2021
+              PUNCH   , [alone] 42:2@5..6#ROOT2021
+              LITERAL Integer 0 42:2@7..8#ROOT2021
+              PUNCH   , [alone] 42:2@8..9#ROOT2021
+              LITERAL Integer 1 42:2@10..11#ROOT2021
+              PUNCH   , [alone] 42:2@11..12#ROOT2021
+              SUBTREE [] 42:2@13..14#ROOT2021 42:2@14..15#ROOT2021"#]],
     );
 }
 
@@ -75,10 +75,10 @@ fn test_fn_like_macro_clone_ident_subtree() {
               PUNCH   , [alone] 1
               SUBTREE [] 1 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   ident 42:2@0..5#4294967037
-              PUNCH   , [alone] 42:2@5..6#4294967037
-              SUBTREE [] 42:2@7..8#4294967037 42:2@7..8#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   ident 42:2@0..5#ROOT2021
+              PUNCH   , [alone] 42:2@5..6#ROOT2021
+              SUBTREE [] 42:2@7..8#ROOT2021 42:2@7..8#ROOT2021"#]],
     );
 }
 
@@ -91,8 +91,8 @@ fn test_fn_like_macro_clone_raw_ident() {
             SUBTREE $$ 1 1
               IDENT   r#async 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   r#async 42:2@0..7#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   r#async 42:2@0..7#ROOT2021"#]],
     );
 }
 
@@ -105,8 +105,8 @@ fn test_fn_like_fn_like_span_join() {
             SUBTREE $$ 1 1
               IDENT   r#joined 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   r#joined 42:2@0..11#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   r#joined 42:2@0..11#ROOT2021"#]],
     );
 }
 
@@ -121,10 +121,10 @@ fn test_fn_like_fn_like_span_ops() {
               IDENT   resolved_at_def_site 1
               IDENT   start_span 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   set_def_site 41:1@0..150#4294967037
-              IDENT   resolved_at_def_site 42:2@13..33#4294967037
-              IDENT   start_span 42:2@34..34#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   set_def_site 41:1@0..150#ROOT2021
+              IDENT   resolved_at_def_site 42:2@13..33#ROOT2021
+              IDENT   start_span 42:2@34..34#ROOT2021"#]],
     );
 }
 
@@ -143,14 +143,14 @@ fn test_fn_like_mk_literals() {
               LITERAL Integer 123i64 1
               LITERAL Integer 123 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              LITERAL ByteStr byte_string 42:2@0..100#4294967037
-              LITERAL Char c 42:2@0..100#4294967037
-              LITERAL Str string 42:2@0..100#4294967037
-              LITERAL Float 3.14f64 42:2@0..100#4294967037
-              LITERAL Float 3.14 42:2@0..100#4294967037
-              LITERAL Integer 123i64 42:2@0..100#4294967037
-              LITERAL Integer 123 42:2@0..100#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              LITERAL ByteStr byte_string 42:2@0..100#ROOT2021
+              LITERAL Char c 42:2@0..100#ROOT2021
+              LITERAL Str string 42:2@0..100#ROOT2021
+              LITERAL Float 3.14f64 42:2@0..100#ROOT2021
+              LITERAL Float 3.14 42:2@0..100#ROOT2021
+              LITERAL Integer 123i64 42:2@0..100#ROOT2021
+              LITERAL Integer 123 42:2@0..100#ROOT2021"#]],
     );
 }
 
@@ -164,9 +164,9 @@ fn test_fn_like_mk_idents() {
               IDENT   standard 1
               IDENT   r#raw 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   standard 42:2@0..100#4294967037
-              IDENT   r#raw 42:2@0..100#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   standard 42:2@0..100#ROOT2021
+              IDENT   r#raw 42:2@0..100#ROOT2021"#]],
     );
 }
 
@@ -198,27 +198,27 @@ fn test_fn_like_macro_clone_literals() {
               PUNCH   , [alone] 1
               LITERAL CStr null 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              LITERAL Integer 1u16 42:2@0..4#4294967037
-              PUNCH   , [alone] 42:2@4..5#4294967037
-              LITERAL Integer 2_u32 42:2@6..11#4294967037
-              PUNCH   , [alone] 42:2@11..12#4294967037
-              PUNCH   - [alone] 42:2@13..14#4294967037
-              LITERAL Integer 4i64 42:2@14..18#4294967037
-              PUNCH   , [alone] 42:2@18..19#4294967037
-              LITERAL Float 3.14f32 42:2@20..27#4294967037
-              PUNCH   , [alone] 42:2@27..28#4294967037
-              LITERAL Str hello bridge 42:2@29..43#4294967037
-              PUNCH   , [alone] 42:2@43..44#4294967037
-              LITERAL Str suffixedsuffix 42:2@45..61#4294967037
-              PUNCH   , [alone] 42:2@61..62#4294967037
-              LITERAL StrRaw(2) raw 42:2@63..73#4294967037
-              PUNCH   , [alone] 42:2@73..74#4294967037
-              LITERAL Char a 42:2@75..78#4294967037
-              PUNCH   , [alone] 42:2@78..79#4294967037
-              LITERAL Byte b 42:2@80..84#4294967037
-              PUNCH   , [alone] 42:2@84..85#4294967037
-              LITERAL CStr null 42:2@86..93#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              LITERAL Integer 1u16 42:2@0..4#ROOT2021
+              PUNCH   , [alone] 42:2@4..5#ROOT2021
+              LITERAL Integer 2_u32 42:2@6..11#ROOT2021
+              PUNCH   , [alone] 42:2@11..12#ROOT2021
+              PUNCH   - [alone] 42:2@13..14#ROOT2021
+              LITERAL Integer 4i64 42:2@14..18#ROOT2021
+              PUNCH   , [alone] 42:2@18..19#ROOT2021
+              LITERAL Float 3.14f32 42:2@20..27#ROOT2021
+              PUNCH   , [alone] 42:2@27..28#ROOT2021
+              LITERAL Str hello bridge 42:2@29..43#ROOT2021
+              PUNCH   , [alone] 42:2@43..44#ROOT2021
+              LITERAL Str suffixedsuffix 42:2@45..61#ROOT2021
+              PUNCH   , [alone] 42:2@61..62#ROOT2021
+              LITERAL StrRaw(2) raw 42:2@63..73#ROOT2021
+              PUNCH   , [alone] 42:2@73..74#ROOT2021
+              LITERAL Char a 42:2@75..78#ROOT2021
+              PUNCH   , [alone] 42:2@78..79#ROOT2021
+              LITERAL Byte b 42:2@80..84#ROOT2021
+              PUNCH   , [alone] 42:2@84..85#ROOT2021
+              LITERAL CStr null 42:2@86..93#ROOT2021"#]],
     );
 }
 
@@ -239,12 +239,12 @@ fn test_attr_macro() {
                 LITERAL Str #[attr_error(some arguments)] mod m {} 1
               PUNCH   ; [alone] 1"#]],
         expect![[r#"
-            SUBTREE $$ 42:2@0..100#4294967037 42:2@0..100#4294967037
-              IDENT   compile_error 42:2@0..100#4294967037
-              PUNCH   ! [alone] 42:2@0..100#4294967037
-              SUBTREE () 42:2@0..100#4294967037 42:2@0..100#4294967037
-                LITERAL Str #[attr_error(some arguments)] mod m {} 42:2@0..100#4294967037
-              PUNCH   ; [alone] 42:2@0..100#4294967037"#]],
+            SUBTREE $$ 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+              IDENT   compile_error 42:2@0..100#ROOT2021
+              PUNCH   ! [alone] 42:2@0..100#ROOT2021
+              SUBTREE () 42:2@0..100#ROOT2021 42:2@0..100#ROOT2021
+                LITERAL Str #[attr_error(some arguments)] mod m {} 42:2@0..100#ROOT2021
+              PUNCH   ; [alone] 42:2@0..100#ROOT2021"#]],
     );
 }
 
diff --git a/src/tools/rust-analyzer/crates/span/src/hygiene.rs b/src/tools/rust-analyzer/crates/span/src/hygiene.rs
index 7cb1676a29d..9ecd188a3cc 100644
--- a/src/tools/rust-analyzer/crates/span/src/hygiene.rs
+++ b/src/tools/rust-analyzer/crates/span/src/hygiene.rs
@@ -353,14 +353,18 @@ impl Transparency {
 
 impl fmt::Display for SyntaxContext {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.0.as_u32())
+        if self.is_root() {
+            write!(f, "ROOT{}", Edition::from_u32(SyntaxContext::MAX_ID - self.0.as_u32()).number())
+        } else {
+            write!(f, "{}", self.0.as_u32())
+        }
     }
 }
 
 impl std::fmt::Debug for SyntaxContext {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         if f.alternate() {
-            write!(f, "{}", self.0.as_u32())
+            fmt::Display::fmt(self, f)
         } else {
             f.debug_tuple("SyntaxContext").field(&self.0).finish()
         }