highlights(c_sharp): lots of improvements

queries/c_sharp/highlights.scm

@@ -9,28 +9,31 @@
 (interpolation) @none
 
 (invocation_expression
-     (member_access_expression
-            name: (identifier) @method))
+  (member_access_expression
+    name: (identifier) @method))
+
+(invocation_expression
+  function: (conditional_access_expression
+    (member_binding_expression
+      name: (identifier) @method)))
 
 (namespace_declaration
   name: [(qualified_name) (identifier)] @namespace)
 
-((member_access_expression
-  (identifier) @type
-  (_) .)
-  (#match? @type "^[A-Z].*[a-z]"))
-
 (qualified_name
   (identifier) @type)
 
 (invocation_expression
       (identifier) @method)
 
-((identifier) @field
- (#match? @field "^_"))
+(field_declaration
+  (variable_declaration
+    (variable_declarator
+      (identifier) @field)))
 
-((identifier) @field
- (#match? @field "^m_"))
+(initializer_expression
+  (assignment_expression
+    left: (identifier) @field))
 
 (parameter_list
   (parameter
@@ -56,10 +59,11 @@
 
 [
  (predefined_type)
- (implicit_type)
  (void_keyword)
 ] @type.builtin
 
+(implicit_type) @keyword
+
 (comment) @comment
 
 (using_directive
@@ -68,6 +72,12 @@
 (property_declaration
   name: (identifier) @property)
 
+(property_declaration
+  type: (identifier) @type)
+
+(nullable_type
+  (identifier) @type)
+
 (catch_declaration
   type: (identifier) @type)
 
@@ -88,15 +98,29 @@
 (generic_name
   (identifier) @type)
 
+(invocation_expression
+  (member_access_expression
+    (generic_name
+      (identifier) @method)))
+
 (base_list
   (identifier) @type)
 
 (type_argument_list
  (identifier) @type)
 
+(type_parameter_list
+  (type_parameter) @type)
+
+(type_parameter_constraints_clause
+  target: (identifier) @type)
+
 (attribute
  name: (identifier) @attribute)
 
+(for_each_statement
+  type: (identifier) @type)
+
 [
  "if"
  "else"
@@ -228,5 +252,6 @@
  "struct"
  "get"
  "set"
+ "where"
 ] @keyword