From bcb6c20a84b6ac6697bf2a4b5d0b78832bcfea62 Mon Sep 17 00:00:00 2001
From: CalebLarsen <43345286+CalebLarsen@users.noreply.github.com>
Date: Wed, 2 Jul 2025 17:41:28 -0500
Subject: [PATCH] queries: Add locals.scm for C. Improve C parameter highlights
 (#13876)

---
 runtime/queries/c/highlights.scm | 29 ++++++++++++++++++++++--
 runtime/queries/c/locals.scm     | 38 ++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+), 2 deletions(-)
 create mode 100644 runtime/queries/c/locals.scm

diff --git a/runtime/queries/c/highlights.scm b/runtime/queries/c/highlights.scm
index 00d01e081..8e499dd61 100644
--- a/runtime/queries/c/highlights.scm
+++ b/runtime/queries/c/highlights.scm
@@ -128,11 +128,36 @@
 (call_expression (argument_list (identifier) @variable))
 (function_declarator
   declarator: [(identifier) (field_identifier)] @function)
+
+; Up to 6 layers of declarators
 (parameter_declaration
   declarator: (identifier) @variable.parameter)
 (parameter_declaration
-  (pointer_declarator
-    declarator: (identifier) @variable.parameter))
+  (_
+    (identifier) @variable.parameter))
+(parameter_declaration
+  (_
+    (_
+      (identifier) @variable.parameter)))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (identifier) @variable.parameter))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (identifier) @variable.parameter)))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (_
+            (identifier) @variable.parameter))))))
+
 (preproc_function_def
   name: (identifier) @function.special)
 
diff --git a/runtime/queries/c/locals.scm b/runtime/queries/c/locals.scm
new file mode 100644
index 000000000..bc672c5e2
--- /dev/null
+++ b/runtime/queries/c/locals.scm
@@ -0,0 +1,38 @@
+;; Scopes
+(function_definition) @local.scope
+
+;; Definitions
+
+; Parameters
+; Up to 6 layers of declarators
+(parameter_declaration
+  (identifier) @local.definition.variable.parameter)
+(parameter_declaration
+  (_
+    (identifier) @local.definition.variable.parameter))
+(parameter_declaration
+  (_
+    (_
+      (identifier) @local.definition.variable.parameter)))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (identifier) @local.definition.variable.parameter))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (identifier) @local.definition.variable.parameter)))))
+(parameter_declaration
+  (_
+    (_
+      (_
+        (_
+          (_
+            (identifier) @local.definition.variable.parameter))))))
+
+;; References
+
+(identifier) @local.reference