highlights.scm basing on c lang,usable but still has query error prompted

[wellcomez]

(identifier) @variable
(self) @variable.builtin
(super) @variable.builtin
(strong) @variable.builtin
(nonatomic) @variable.builtin
(weak) @variable.builtin

[
"in"
"@interface"
"@protocol"
"@Property"
"@EnD"
"@implementation"
"const"
"default"
"enum"
"extern"
"inline"
"static"
"struct"
"typedef"
"union"
"volatile"
"goto"
"register"
] @Keyword

"sizeof" @keyword.operator
"return" @keyword.return

[
"while"
"for"
"do"
"continue"
"break"
] @repeat

[
"if"
"else"
"case"
"switch"
] @conditional

"#define" @constant.macro
[
"#if"
"#ifdef"
"#ifndef"
"#else"
"#elif"
"#endif"
(preproc_directive)
] @Keyword

"#include" @include
"#import" @include

[
"="

"-"
"*"
"/"
"+"
"%"

"~"
"|"
"&"
"^"
"<<"
">>"

"->"

"<"
"<="
">="
">"
"=="
"!="

"!"
"&&"
"||"

"-="
"+="
"*="
"/="
"%="
"|="
"&="
"^="
">>="
"<<="
"--"
"++"
"@"
] @operator

[
(true)
(false)
] @boolean

[ "." ";" ":" "," ] @punctuation.delimiter

"..." @punctuation.special

(conditional_expression [ "?" ":" ] @conditional)

[ "(" ")" "[" "]" "{" "}"] @punctuation.bracket

(string_literal) @string
(system_lib_string) @string
(escape_sequence) @string.escape

(null) @constant.builtin
(number_literal) @Number
(char_literal) @character

[
(preproc_arg)
(preproc_defined)
] @function.macro

(((field_expression
(field_identifier) @Property)) @_parent
(#not-has-parent? @_parent template_method function_declarator call_expression))

(((field_identifier) @Property)
(#has-ancestor? @Property field_declaration)
(#not-has-ancestor? @Property function_declarator))

(statement_identifier) @Label

[
(type_identifier)
(primitive_type)
(sized_type_specifier)
(type_descriptor)
] @type

(declaration (type_qualifier) @type)
(cast_expression type: (type_descriptor) @type)
(sizeof_expression value: (parenthesized_expression (identifier) @type))

((identifier) @constant
(#match? @constant "^[A-Z][A-Z0-9_]+$"))

;; Preproc def / undef
(preproc_def
name: (_) @constant)
(preproc_call
directive: (preproc_directive) @u
argument: () @constant
(#eq? @_u "#undef"))

(call_expression
function: (identifier) @function)
(call_expression
function: (field_expression
field: (field_identifier) @function))
(function_declarator
declarator: (identifier) @function)
(preproc_function_def
name: (identifier) @function.macro)

(comment) @comment

;; Parameters
(parameter_declaration
declarator: (identifier) @parameter)

(parameter_declaration
declarator: (pointer_declarator) @parameter)

(preproc_params
(identifier)) @parameter

[
"attribute"
"__cdecl"
"__clrcall"
"__stdcall"
"__fastcall"
"__thiscall"
"__vectorcall"
"_unaligned"
"__unaligned"
"__declspec"
] @Attribute

(ERROR) @error

[wellcomez]

As objc is supper-set of c, we just need append some extendable syntax.