feat(c#): Scope struct definitions

README.md

@@ -1363,6 +1363,7 @@ Language scopes:
           - strings:  Strings (incl. verbatim, interpolated; incl. quotes, except for
             interpolated)
           - usings:   `using` directives (including periods)
+          - struct:   `struct` definitions (in their entirety)
 
       --csharp-query <TREE-SITTER-QUERY>
           Scope C# code using a custom tree-sitter query.

src/scoping/langs/csharp.rs

@@ -22,6 +22,8 @@ pub enum PreparedCSharpQuery {
     Strings,
     /// `using` directives (including periods).
     Usings,
+    /// `struct` definitions (in their entirety).
+    Struct,
 }
 
 impl From<PreparedCSharpQuery> for TSQuery {
@@ -47,6 +49,7 @@ impl From<PreparedCSharpQuery> for TSQuery {
                         IGNORE
                     )
                 }
+                PreparedCSharpQuery::Struct => "(struct_declaration) @struct",
             },
         )
         .expect("Prepared queries to be valid")

tests/langs/mod.rs

@@ -307,6 +307,11 @@ impl InScopeLinePart {
     include_str!("csharp/base.cs"),
     CSharp::new(CodeQuery::Prepared(PreparedCSharpQuery::Comments)),
 )]
+#[case(
+    "base.cs_struct",
+    include_str!("csharp/base.cs"),
+    CSharp::new(CodeQuery::Prepared(PreparedCSharpQuery::Struct)),
+)]
 fn test_language_scopers(
     #[case] snapshot_name: &str,
     #[case] contents: &str,

tests/langs/snapshots/r#mod__langs__base.cs_struct.snap

@@ -0,0 +1,19 @@
+---
+source: tests/langs/mod.rs
+expression: inscope_parts
+---
+- n: 11
+  l: "    public unsafe struct TestResult<T> where T : struct\n"
+  m: "    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"
+- n: 12
+  l: "    {\n"
+  m: ^^^^^^^
+- n: 13
+  l: "        public T Value;\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 14
+  l: "        public fixed byte ErrorCode[16];\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 15
+  l: "    }\n"
+  m: "^^^^^  "