Add methods high-lighting

queries/highlights.scm

@@ -75,7 +75,7 @@
 ] @punctuation.bracket
 ; }}}
 
-; Functions {{{
+; Functions and methods {{{
 (function_call
   function: (identifier) @function)
 (function_declaration
@@ -83,6 +83,11 @@
 (primitive_declaration
   name: (identifier) @function)
 
+(method_call
+  method: (identifier) @method)
+(method_declaration
+  name: (identifier) @method)
+
 (parameters
   name: (identifier) @variable.parameter)
 ; }}}

test/highlight/object-oriented.tig

@@ -13,6 +13,7 @@ let
 
     method meth() : int = self.a
     /* <- keyword */
+    /*     ^ method */
     /*                    ^ variable */
   }
 
@@ -21,4 +22,7 @@ let
 in
   object.a := 27;
   /*     ^ property */
+
+  object.meth()
+  /*     ^ method */
 end