[ "syntax" "package" "option" "import" "service" "rpc" "returns" "message" "enum" "oneof" "repeated" "reserved" "to" ] @keyword [ (key_type) (type) (message_name) (enum_name) (service_name) (rpc_name) ]@type (string) @string [ (int_lit) (float_lit) ] @number [ (true) (false) ] @constant.builtin (comment) @comment [ "(" ")" "[" "]" "{" "}" ] @punctuation.bracket