Introduce storage_class highlight scope (#2731)

3 files changed, 15 insertions, 8 deletions

diff --git a/book/src/themes.md b/book/src/themes.md
index 7562b205..4c0eda22 100644
--- a/book/src/themes.md
+++ b/book/src/themes.md
@@ -151,6 +151,7 @@ We use a similar set of scopes as
   - `operator` - `or`, `in`
   - `directive` - Preprocessor directives (`#if` in C) 
   - `function` - `fn`, `func`
+  - `storage` - Keywords that affect the storage of a variable, function or data structure `static`, `mut`, `const`, `ref`
 
 - `operator` - `||`, `+=`, `>`
 
diff --git a/runtime/queries/c/highlights.scm b/runtime/queries/c/highlights.scm
index 918f3f66..1263cff6 100644
--- a/runtime/queries/c/highlights.scm
+++ b/runtime/queries/c/highlights.scm
@@ -1,8 +1,9 @@
+(storage_class_specifier) @keyword.storage
+
 "goto" @keyword
 "register" @keyword
 "break" @keyword
 "case" @keyword
-"const" @keyword
 "continue" @keyword
 "default" @keyword
 "do" @keyword
@@ -14,7 +15,6 @@
 "inline" @keyword
 "return" @keyword
 "sizeof" @keyword
-"static" @keyword
 "struct" @keyword
 "switch" @keyword
 "typedef" @keyword
diff --git a/runtime/queries/rust/highlights.scm b/runtime/queries/rust/highlights.scm
index 26496c66..99cb8381 100644
--- a/runtime/queries/rust/highlights.scm
+++ b/runtime/queries/rust/highlights.scm
@@ -156,16 +156,22 @@
   "macro_rules!"
 
   "let"
-  "ref"
-  "move"
 
-  "dyn"
-  "static"
-  "const"
   "async"
 ] @keyword
 
-(mutable_specifier) @keyword.mut
+(mutable_specifier) @keyword.storage.modifier.mut
+
+(reference_type "&" @keyword.storage.modifier.ref)
+(self_parameter "&" @keyword.storage.modifier.ref)
+
+[
+  "static"
+  "const"
+  "ref"
+  "move"
+  "dyn"
+] @keyword.storage.modifier
 
 ; TODO: variable.mut to highlight mutable identifiers via locals.scm