Merge #7123

7123: Add support for Rust 2021. r=lnicola a=m-ou-se

This adds `2021` in all places where rust-analyzer already knew about `2015` and `2018`.

The only edition-specific behaviour I could find in the source code was gated on a direct comparison with `Edition2015`, so `Edition2021` should (correctly) behave the same as `Edition2018`:

https://github.com/rust-analyzer/rust-analyzer/blob/56a7bf7ede12f6bec194265ea4a95911c9e469bd/crates/hir_def/src/nameres/path_resolution.rs#L132

Co-authored-by: Mara Bos <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/crates/project_model/src/project_json.rs b/crates/project_model/src/project_json.rs
index aab279223..af884eb84 100644
--- a/crates/project_model/src/project_json.rs
+++ b/crates/project_model/src/project_json.rs
@@ -139,6 +139,8 @@ enum EditionData {
     Edition2015,
     #[serde(rename = "2018")]
     Edition2018,
+    #[serde(rename = "2021")]
+    Edition2021,
 }
 
 impl From<EditionData> for Edition {
@@ -146,6 +148,7 @@ impl From<EditionData> for Edition {
         match data {
             EditionData::Edition2015 => Edition::Edition2015,
             EditionData::Edition2018 => Edition::Edition2018,
+            EditionData::Edition2021 => Edition::Edition2021,
         }
     }
 }