feat(rust): Scope function definitions marked async

README.md

@@ -1493,6 +1493,7 @@ Language scopes:
           - pub-self-fn:      Function definitions marked `pub(self)`
           - pub-super-fn:     Function definitions marked `pub(super)`
           - const-fn:         Function definitions marked `const`
+          - async-fn:         Function definitions marked `async`
           - mod:              `mod` blocks
           - mod-tests:        `mod tests` blocks
           - type-def:         Type definitions (`struct`, `enum`, `union`)

src/scoping/langs/rust.rs

@@ -62,6 +62,8 @@ pub enum PreparedRustQuery {
     PubSuperFn,
     /// Function definitions marked `const`
     ConstFn,
+    /// Function definitions marked `async`
+    AsyncFn,
     /// `mod` blocks.
     Mod,
     /// `mod tests` blocks.
@@ -203,6 +205,12 @@ impl From<PreparedRustQuery> for TSQuery {
                         (#match? @funcmods "const")
                     ) @function_item"#
                 }
+                PreparedRustQuery::AsyncFn => {
+                    r#"(function_item
+                        (function_modifiers) @funcmods
+                        (#match? @funcmods "async")
+                    ) @function_item"#
+                }
                 PreparedRustQuery::Mod => "(mod_item) @mod_item",
                 PreparedRustQuery::ModTests => {
                     r#"(mod_item

tests/langs/mod.rs

@@ -297,6 +297,11 @@ impl InScopeLinePart {
     include_str!("rust/base.rs"),
     Rust::new(CodeQuery::Prepared(PreparedRustQuery::ConstFn)),
 )]
+#[case(
+    "base.rs_async-fn",
+    include_str!("rust/base.rs"),
+    Rust::new(CodeQuery::Prepared(PreparedRustQuery::AsyncFn)),
+)]
 #[case(
     "base.rs_mod",
     include_str!("rust/base.rs"),

tests/langs/snapshots/r#mod__langs__base.rs_async-fn.snap

@@ -0,0 +1,55 @@
+---
+source: tests/langs/mod.rs
+expression: inscope_parts
+---
+- n: 182
+  l: "async fn async_main() -> Result<(), ()> {\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 183
+  l: "    // Open a connection to the mini-redis address.\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 184
+  l: "    let mut client = client::connect(\"127.0.0.1:6379\").await?;\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 185
+  l: "\n"
+  m: ^^
+- n: 186
+  l: "    // Set the key \"hello\" with value \"world\"\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 187
+  l: "    client.set(\"hello\", \"world\".into()).await?;\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 188
+  l: "\n"
+  m: ^^
+- n: 189
+  l: "    // Get key \"hello\"\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 190
+  l: "    let result = client.get(\"hello\").await?;\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 191
+  l: "\n"
+  m: ^^
+- n: 192
+  l: "    println!(\"got value from the server; result={:?}\", result);\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 193
+  l: "\n"
+  m: ^^
+- n: 194
+  l: "    Ok(())\n"
+  m: ^^^^^^^^^^^^
+- n: 195
+  l: "}\n"
+  m: "^  "
+- n: 197
+  l: "pub async fn async_pub_fn() -> Result<(), ()> {\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 198
+  l: "    Ok(())\n"
+  m: ^^^^^^^^^^^^
+- n: 199
+  l: "}\n"
+  m: "^  "