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//===--- TokenKinds.def - C Family Token Kind Database ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the TokenKind database. This includes normal tokens like
// tok::ampamp (corresponding to the && token) as well as keywords for various
// languages. Users of this file must optionally #define the TOK, KEYWORD,
// ALIAS, or PPKEYWORD macros to make use of this file.
//
//===----------------------------------------------------------------------===//
#ifndef TOK
#define TOK(X)
#endif
#ifndef PUNCTUATOR
#define PUNCTUATOR(X,Y) TOK(X)
#endif
#ifndef KEYWORD
#define KEYWORD(X,Y) TOK(kw_ ## X)
#endif
#ifndef ALIAS
#define ALIAS(X,Y,Z)
#endif
#ifndef PPKEYWORD
#define PPKEYWORD(X)
#endif
#ifndef CXX_KEYWORD_OPERATOR
#define CXX_KEYWORD_OPERATOR(X,Y)
#endif
#ifndef OBJC1_AT_KEYWORD
#define OBJC1_AT_KEYWORD(X)
#endif
#ifndef OBJC2_AT_KEYWORD
#define OBJC2_AT_KEYWORD(X)
#endif
#ifndef TESTING_KEYWORD
#define TESTING_KEYWORD(X, L) KEYWORD(X, L)
#endif
#ifndef ANNOTATION
#define ANNOTATION(X) TOK(annot_ ## X)
#endif
//===----------------------------------------------------------------------===//
// Preprocessor keywords.
//===----------------------------------------------------------------------===//
// These have meaning after a '#' at the start of a line. These define enums in
// the tok::pp_* namespace. Note that IdentifierInfo::getPPKeywordID must be
// manually updated if something is added here.
PPKEYWORD(not_keyword)
// C99 6.10.1 - Conditional Inclusion.
PPKEYWORD(if)
PPKEYWORD(ifdef)
PPKEYWORD(ifndef)
PPKEYWORD(elif)
PPKEYWORD(else)
PPKEYWORD(endif)
PPKEYWORD(defined)
// C99 6.10.2 - Source File Inclusion.
PPKEYWORD(include)
PPKEYWORD(__include_macros)
// C99 6.10.3 - Macro Replacement.
PPKEYWORD(define)
PPKEYWORD(undef)
// C99 6.10.4 - Line Control.
PPKEYWORD(line)
// C99 6.10.5 - Error Directive.
PPKEYWORD(error)
// C99 6.10.6 - Pragma Directive.
PPKEYWORD(pragma)
// GNU Extensions.
PPKEYWORD(import)
PPKEYWORD(include_next)
PPKEYWORD(warning)
PPKEYWORD(ident)
PPKEYWORD(sccs)
PPKEYWORD(assert)
PPKEYWORD(unassert)
// Clang extensions
PPKEYWORD(__public_macro)
PPKEYWORD(__private_macro)
//===----------------------------------------------------------------------===//
// Language keywords.
//===----------------------------------------------------------------------===//
// These define members of the tok::* namespace.
TOK(unknown) // Not a token.
TOK(eof) // End of file.
TOK(eod) // End of preprocessing directive (end of line inside a
// directive).
TOK(code_completion) // Code completion marker
TOK(cxx_defaultarg_end) // C++ default argument end marker
// C99 6.4.9: Comments.
TOK(comment) // Comment (only in -E -C[C] mode)
// C99 6.4.2: Identifiers.
TOK(identifier) // abcde123
TOK(raw_identifier) // Used only in raw lexing mode.
// C99 6.4.4.1: Integer Constants
// C99 6.4.4.2: Floating Constants
TOK(numeric_constant) // 0x123
// C99 6.4.4: Character Constants
TOK(char_constant) // 'a'
TOK(wide_char_constant) // L'b'
// C++0x Character Constants
TOK(utf16_char_constant) // u'a'
TOK(utf32_char_constant) // U'a'
// C99 6.4.5: String Literals.
TOK(string_literal) // "foo"
TOK(wide_string_literal) // L"foo"
TOK(angle_string_literal)// <foo>
// C++0x String Literals.
TOK(utf8_string_literal) // u8"foo"
TOK(utf16_string_literal)// u"foo"
TOK(utf32_string_literal)// U"foo"
// C99 6.4.6: Punctuators.
PUNCTUATOR(l_square, "[")
PUNCTUATOR(r_square, "]")
PUNCTUATOR(l_paren, "(")
PUNCTUATOR(r_paren, ")")
PUNCTUATOR(l_brace, "{")
PUNCTUATOR(r_brace, "}")
PUNCTUATOR(period, ".")
PUNCTUATOR(ellipsis, "...")
PUNCTUATOR(amp, "&")
PUNCTUATOR(ampamp, "&&")
PUNCTUATOR(ampequal, "&=")
PUNCTUATOR(star, "*")
PUNCTUATOR(starequal, "*=")
PUNCTUATOR(plus, "+")
PUNCTUATOR(plusplus, "++")
PUNCTUATOR(plusequal, "+=")
PUNCTUATOR(minus, "-")
PUNCTUATOR(arrow, "->")
PUNCTUATOR(minusminus, "--")
PUNCTUATOR(minusequal, "-=")
PUNCTUATOR(tilde, "~")
PUNCTUATOR(exclaim, "!")
PUNCTUATOR(exclaimequal, "!=")
PUNCTUATOR(slash, "/")
PUNCTUATOR(slashequal, "/=")
PUNCTUATOR(percent, "%")
PUNCTUATOR(percentequal, "%=")
PUNCTUATOR(less, "<")
PUNCTUATOR(lessless, "<<")
PUNCTUATOR(lessequal, "<=")
PUNCTUATOR(lesslessequal, "<<=")
PUNCTUATOR(greater, ">")
PUNCTUATOR(greatergreater, ">>")
PUNCTUATOR(greaterequal, ">=")
PUNCTUATOR(greatergreaterequal, ">>=")
PUNCTUATOR(caret, "^")
PUNCTUATOR(caretequal, "^=")
PUNCTUATOR(pipe, "|")
PUNCTUATOR(pipepipe, "||")
PUNCTUATOR(pipeequal, "|=")
PUNCTUATOR(question, "?")
PUNCTUATOR(colon, ":")
PUNCTUATOR(semi, ";")
PUNCTUATOR(equal, "=")
PUNCTUATOR(equalequal, "==")
PUNCTUATOR(comma, ",")
PUNCTUATOR(hash, "#")
PUNCTUATOR(hashhash, "##")
PUNCTUATOR(hashat, "#@")
// C++ Support
PUNCTUATOR(periodstar, ".*")
PUNCTUATOR(arrowstar, "->*")
PUNCTUATOR(coloncolon, "::")
// Objective C support.
PUNCTUATOR(at, "@")
// CUDA support.
PUNCTUATOR(lesslessless, "<<<")
PUNCTUATOR(greatergreatergreater, ">>>")
// C99 6.4.1: Keywords. These turn into kw_* tokens.
// Flags allowed:
// KEYALL - This is a keyword in all variants of C and C++, or it
// is a keyword in the implementation namespace that should
// always be treated as a keyword
// KEYC99 - This is a keyword introduced to C in C99
// KEYC11 - This is a keyword introduced to C in C11
// KEYCXX - This is a C++ keyword, or a C++-specific keyword in the
// implementation namespace
// KEYNOCXX - This is a keyword in every non-C++ dialect.
// KEYCXX0X - This is a C++ keyword introduced to C++ in C++0x
// KEYGNU - This is a keyword if GNU extensions are enabled
// KEYMS - This is a keyword if Microsoft extensions are enabled
// KEYOPENCL - This is a keyword in OpenCL
// KEYALTIVEC - This is a keyword in AltiVec
// KEYBORLAND - This is a keyword if Borland extensions are enabled
// BOOLSUPPORT - This is a keyword if 'bool' is a built-in type
//
KEYWORD(auto , KEYALL)
KEYWORD(break , KEYALL)
KEYWORD(case , KEYALL)
KEYWORD(char , KEYALL)
KEYWORD(const , KEYALL)
KEYWORD(continue , KEYALL)
KEYWORD(default , KEYALL)
KEYWORD(do , KEYALL)
KEYWORD(double , KEYALL)
KEYWORD(else , KEYALL)
KEYWORD(enum , KEYALL)
KEYWORD(extern , KEYALL)
KEYWORD(float , KEYALL)
KEYWORD(for , KEYALL)
KEYWORD(goto , KEYALL)
KEYWORD(if , KEYALL)
KEYWORD(inline , KEYC99|KEYCXX|KEYGNU)
KEYWORD(int , KEYALL)
KEYWORD(long , KEYALL)
KEYWORD(register , KEYALL)
KEYWORD(restrict , KEYC99)
KEYWORD(return , KEYALL)
KEYWORD(short , KEYALL)
KEYWORD(signed , KEYALL)
KEYWORD(sizeof , KEYALL)
KEYWORD(static , KEYALL)
KEYWORD(struct , KEYALL)
KEYWORD(switch , KEYALL)
KEYWORD(typedef , KEYALL)
KEYWORD(union , KEYALL)
KEYWORD(unsigned , KEYALL)
KEYWORD(void , KEYALL)
KEYWORD(volatile , KEYALL)
KEYWORD(while , KEYALL)
KEYWORD(_Alignas , KEYALL)
KEYWORD(_Atomic , KEYALL)
KEYWORD(_Bool , KEYNOCXX)
KEYWORD(_Complex , KEYALL)
KEYWORD(_Generic , KEYALL)
KEYWORD(_Imaginary , KEYALL)
KEYWORD(_Static_assert , KEYALL)
KEYWORD(__func__ , KEYALL)
KEYWORD(__objc_yes , KEYALL)
KEYWORD(__objc_no , KEYALL)
// C++ 2.11p1: Keywords.
KEYWORD(asm , KEYCXX|KEYGNU)
KEYWORD(bool , BOOLSUPPORT|KEYALTIVEC)
KEYWORD(catch , KEYCXX)
KEYWORD(class , KEYCXX)
KEYWORD(const_cast , KEYCXX)
KEYWORD(delete , KEYCXX)
KEYWORD(dynamic_cast , KEYCXX)
KEYWORD(explicit , KEYCXX)
KEYWORD(export , KEYCXX)
KEYWORD(false , BOOLSUPPORT|KEYALTIVEC)
KEYWORD(friend , KEYCXX)
KEYWORD(mutable , KEYCXX)
KEYWORD(namespace , KEYCXX)
KEYWORD(new , KEYCXX)
KEYWORD(operator , KEYCXX)
KEYWORD(private , KEYCXX|KEYOPENCL)
KEYWORD(protected , KEYCXX)
KEYWORD(public , KEYCXX)
KEYWORD(reinterpret_cast , KEYCXX)
KEYWORD(static_cast , KEYCXX)
KEYWORD(template , KEYCXX)
KEYWORD(this , KEYCXX)
KEYWORD(throw , KEYCXX)
KEYWORD(true , BOOLSUPPORT|KEYALTIVEC)
KEYWORD(try , KEYCXX)
KEYWORD(typename , KEYCXX)
KEYWORD(typeid , KEYCXX)
KEYWORD(using , KEYCXX)
KEYWORD(virtual , KEYCXX)
KEYWORD(wchar_t , KEYCXX)
// C++ 2.5p2: Alternative Representations.
CXX_KEYWORD_OPERATOR(and , ampamp)
CXX_KEYWORD_OPERATOR(and_eq , ampequal)
CXX_KEYWORD_OPERATOR(bitand , amp)
CXX_KEYWORD_OPERATOR(bitor , pipe)
CXX_KEYWORD_OPERATOR(compl , tilde)
CXX_KEYWORD_OPERATOR(not , exclaim)
CXX_KEYWORD_OPERATOR(not_eq , exclaimequal)
CXX_KEYWORD_OPERATOR(or , pipepipe)
CXX_KEYWORD_OPERATOR(or_eq , pipeequal)
CXX_KEYWORD_OPERATOR(xor , caret)
CXX_KEYWORD_OPERATOR(xor_eq , caretequal)
// C++0x keywords
KEYWORD(alignas , KEYCXX0X)
KEYWORD(alignof , KEYCXX0X)
KEYWORD(char16_t , KEYCXX0X)
KEYWORD(char32_t , KEYCXX0X)
KEYWORD(constexpr , KEYCXX0X)
KEYWORD(decltype , KEYCXX0X)
KEYWORD(noexcept , KEYCXX0X)
KEYWORD(nullptr , KEYCXX0X)
KEYWORD(static_assert , KEYCXX0X)
KEYWORD(thread_local , KEYCXX0X)
// GNU Extensions (in impl-reserved namespace)
KEYWORD(_Decimal32 , KEYALL)
KEYWORD(_Decimal64 , KEYALL)
KEYWORD(_Decimal128 , KEYALL)
KEYWORD(__null , KEYCXX)
KEYWORD(__alignof , KEYALL)
KEYWORD(__attribute , KEYALL)
KEYWORD(__builtin_choose_expr , KEYALL)
KEYWORD(__builtin_offsetof , KEYALL)
KEYWORD(__builtin_types_compatible_p, KEYALL)
KEYWORD(__builtin_va_arg , KEYALL)
KEYWORD(__extension__ , KEYALL)
KEYWORD(__imag , KEYALL)
KEYWORD(__int128 , KEYALL)
KEYWORD(__label__ , KEYALL)
KEYWORD(__real , KEYALL)
KEYWORD(__thread , KEYALL)
KEYWORD(__FUNCTION__ , KEYALL)
KEYWORD(__PRETTY_FUNCTION__ , KEYALL)
// GNU Extensions (outside impl-reserved namespace)
KEYWORD(typeof , KEYGNU)
// GNU and MS Type Traits
KEYWORD(__has_nothrow_assign , KEYCXX)
KEYWORD(__has_nothrow_copy , KEYCXX)
KEYWORD(__has_nothrow_constructor , KEYCXX)
KEYWORD(__has_trivial_assign , KEYCXX)
KEYWORD(__has_trivial_copy , KEYCXX)
KEYWORD(__has_trivial_constructor , KEYCXX)
KEYWORD(__has_trivial_destructor , KEYCXX)
KEYWORD(__has_virtual_destructor , KEYCXX)
KEYWORD(__is_abstract , KEYCXX)
KEYWORD(__is_base_of , KEYCXX)
KEYWORD(__is_class , KEYCXX)
KEYWORD(__is_convertible_to , KEYCXX)
KEYWORD(__is_empty , KEYCXX)
KEYWORD(__is_enum , KEYCXX)
KEYWORD(__is_final , KEYCXX)
// Tentative name - there's no implementation of std::is_literal_type yet.
KEYWORD(__is_literal , KEYCXX)
// Name for GCC 4.6 compatibility - people have already written libraries using
// this name unfortunately.
KEYWORD(__is_literal_type , KEYCXX)
KEYWORD(__is_pod , KEYCXX)
KEYWORD(__is_polymorphic , KEYCXX)
KEYWORD(__is_trivial , KEYCXX)
KEYWORD(__is_union , KEYCXX)
// Clang-only C++ Type Traits
KEYWORD(__is_trivially_constructible, KEYCXX)
KEYWORD(__is_trivially_copyable , KEYCXX)
KEYWORD(__is_trivially_assignable , KEYCXX)
KEYWORD(__underlying_type , KEYCXX)
// Embarcadero Expression Traits
KEYWORD(__is_lvalue_expr , KEYCXX)
KEYWORD(__is_rvalue_expr , KEYCXX)
// Embarcadero Unary Type Traits
KEYWORD(__is_arithmetic , KEYCXX)
KEYWORD(__is_floating_point , KEYCXX)
KEYWORD(__is_integral , KEYCXX)
KEYWORD(__is_complete_type , KEYCXX)
KEYWORD(__is_void , KEYCXX)
KEYWORD(__is_array , KEYCXX)
KEYWORD(__is_function , KEYCXX)
KEYWORD(__is_reference , KEYCXX)
KEYWORD(__is_lvalue_reference , KEYCXX)
KEYWORD(__is_rvalue_reference , KEYCXX)
KEYWORD(__is_fundamental , KEYCXX)
KEYWORD(__is_object , KEYCXX)
KEYWORD(__is_scalar , KEYCXX)
KEYWORD(__is_compound , KEYCXX)
KEYWORD(__is_pointer , KEYCXX)
KEYWORD(__is_member_object_pointer , KEYCXX)
KEYWORD(__is_member_function_pointer, KEYCXX)
KEYWORD(__is_member_pointer , KEYCXX)
KEYWORD(__is_const , KEYCXX)
KEYWORD(__is_volatile , KEYCXX)
KEYWORD(__is_standard_layout , KEYCXX)
KEYWORD(__is_signed , KEYCXX)
KEYWORD(__is_unsigned , KEYCXX)
// Embarcadero Binary Type Traits
KEYWORD(__is_same , KEYCXX)
KEYWORD(__is_convertible , KEYCXX)
KEYWORD(__array_rank , KEYCXX)
KEYWORD(__array_extent , KEYCXX)
// Apple Extension.
KEYWORD(__private_extern__ , KEYALL)
KEYWORD(__module_private__ , KEYALL)
// Microsoft Extension.
KEYWORD(__declspec , KEYALL)
KEYWORD(__cdecl , KEYALL)
KEYWORD(__stdcall , KEYALL)
KEYWORD(__fastcall , KEYALL)
KEYWORD(__thiscall , KEYALL)
KEYWORD(__forceinline , KEYALL)
KEYWORD(__unaligned , KEYMS)
// OpenCL-specific keywords
KEYWORD(__kernel , KEYOPENCL)
ALIAS("kernel", __kernel , KEYOPENCL)
KEYWORD(vec_step , KEYOPENCL|KEYALTIVEC)
KEYWORD(__private , KEYOPENCL)
KEYWORD(__global , KEYOPENCL)
KEYWORD(__local , KEYOPENCL)
KEYWORD(__constant , KEYOPENCL)
ALIAS("global", __global , KEYOPENCL)
ALIAS("local", __local , KEYOPENCL)
ALIAS("constant", __constant , KEYOPENCL)
KEYWORD(__read_only , KEYOPENCL)
KEYWORD(__write_only , KEYOPENCL)
KEYWORD(__read_write , KEYOPENCL)
ALIAS("read_only", __read_only , KEYOPENCL)
ALIAS("write_only", __write_only , KEYOPENCL)
ALIAS("read_write", __read_write , KEYOPENCL)
KEYWORD(__builtin_astype , KEYOPENCL)
// Borland Extensions.
KEYWORD(__pascal , KEYALL)
// Altivec Extension.
KEYWORD(__vector , KEYALTIVEC)
KEYWORD(__pixel , KEYALTIVEC)
// ARM NEON extensions.
ALIAS("__fp16", half , KEYALL)
// OpenCL Extension.
KEYWORD(half , KEYOPENCL)
// Objective-C ARC keywords.
KEYWORD(__bridge , KEYARC)
KEYWORD(__bridge_transfer , KEYARC)
KEYWORD(__bridge_retained , KEYARC)
KEYWORD(__bridge_retain , KEYARC)
// Alternate spelling for various tokens. There are GCC extensions in all
// languages, but should not be disabled in strict conformance mode.
ALIAS("__alignof__" , __alignof , KEYALL)
ALIAS("__asm" , asm , KEYALL)
ALIAS("__asm__" , asm , KEYALL)
ALIAS("__attribute__", __attribute, KEYALL)
ALIAS("__complex" , _Complex , KEYALL)
ALIAS("__complex__" , _Complex , KEYALL)
ALIAS("__const" , const , KEYALL)
ALIAS("__const__" , const , KEYALL)
ALIAS("__decltype" , decltype , KEYCXX)
ALIAS("__imag__" , __imag , KEYALL)
ALIAS("__inline" , inline , KEYALL)
ALIAS("__inline__" , inline , KEYALL)
ALIAS("__nullptr" , nullptr , KEYCXX)
ALIAS("__real__" , __real , KEYALL)
ALIAS("__restrict" , restrict , KEYALL)
ALIAS("__restrict__" , restrict , KEYALL)
ALIAS("__signed" , signed , KEYALL)
ALIAS("__signed__" , signed , KEYALL)
ALIAS("__typeof" , typeof , KEYALL)
ALIAS("__typeof__" , typeof , KEYALL)
ALIAS("__volatile" , volatile , KEYALL)
ALIAS("__volatile__" , volatile , KEYALL)
// Microsoft extensions which should be disabled in strict conformance mode
KEYWORD(__ptr64 , KEYMS)
KEYWORD(__ptr32 , KEYMS)
KEYWORD(__w64 , KEYMS)
KEYWORD(__uuidof , KEYMS | KEYBORLAND)
KEYWORD(__try , KEYMS | KEYBORLAND)
KEYWORD(__finally , KEYMS | KEYBORLAND)
KEYWORD(__leave , KEYMS | KEYBORLAND)
KEYWORD(__int64 , KEYMS)
KEYWORD(__if_exists , KEYMS)
KEYWORD(__if_not_exists , KEYMS)
ALIAS("__int8" , char , KEYMS)
ALIAS("__int16" , short , KEYMS)
ALIAS("__int32" , int , KEYMS)
ALIAS("_asm" , asm , KEYMS)
ALIAS("_cdecl" , __cdecl , KEYMS | KEYBORLAND)
ALIAS("_fastcall" , __fastcall , KEYMS | KEYBORLAND)
ALIAS("_stdcall" , __stdcall , KEYMS | KEYBORLAND)
ALIAS("_thiscall" , __thiscall , KEYMS)
ALIAS("_uuidof" , __uuidof , KEYMS | KEYBORLAND)
ALIAS("_inline" , inline , KEYMS)
ALIAS("_declspec" , __declspec , KEYMS)
ALIAS("__interface" , struct , KEYMS)
// Borland Extensions which should be disabled in strict conformance mode.
ALIAS("_pascal" , __pascal , KEYBORLAND)
// Clang Extensions.
ALIAS("__char16_t" , char16_t , KEYCXX)
ALIAS("__char32_t" , char32_t , KEYCXX)
// Clang-specific keywords enabled only in testing.
TESTING_KEYWORD(__unknown_anytype , KEYALL)
//===----------------------------------------------------------------------===//
// Objective-C @-preceded keywords.
//===----------------------------------------------------------------------===//
// These have meaning after an '@' in Objective-C mode. These define enums in
// the tok::objc_* namespace.
OBJC1_AT_KEYWORD(not_keyword)
OBJC1_AT_KEYWORD(class)
OBJC1_AT_KEYWORD(compatibility_alias)
OBJC1_AT_KEYWORD(defs)
OBJC1_AT_KEYWORD(encode)
OBJC1_AT_KEYWORD(end)
OBJC1_AT_KEYWORD(implementation)
OBJC1_AT_KEYWORD(interface)
OBJC1_AT_KEYWORD(private)
OBJC1_AT_KEYWORD(protected)
OBJC1_AT_KEYWORD(protocol)
OBJC1_AT_KEYWORD(public)
OBJC1_AT_KEYWORD(selector)
OBJC1_AT_KEYWORD(throw)
OBJC1_AT_KEYWORD(try)
OBJC1_AT_KEYWORD(catch)
OBJC1_AT_KEYWORD(finally)
OBJC1_AT_KEYWORD(synchronized)
OBJC1_AT_KEYWORD(autoreleasepool)
OBJC2_AT_KEYWORD(property)
OBJC2_AT_KEYWORD(package)
OBJC2_AT_KEYWORD(required)
OBJC2_AT_KEYWORD(optional)
OBJC2_AT_KEYWORD(synthesize)
OBJC2_AT_KEYWORD(dynamic)
OBJC2_AT_KEYWORD(__experimental_modules_import)
// TODO: What to do about context-sensitive keywords like:
// bycopy/byref/in/inout/oneway/out?
ANNOTATION(cxxscope) // annotation for a C++ scope spec, e.g. "::foo::bar::"
ANNOTATION(typename) // annotation for a C typedef name, a C++ (possibly
// qualified) typename, e.g. "foo::MyClass", or
// template-id that names a type ("std::vector<int>")
ANNOTATION(template_id) // annotation for a C++ template-id that names a
// function template specialization (not a type),
// e.g., "std::swap<int>"
ANNOTATION(primary_expr) // annotation for a primary expression
ANNOTATION(decltype) // annotation for a decltype expression,
// e.g., "decltype(foo.bar())"
// Annotation for #pragma unused(...)
// For each argument inside the parentheses the pragma handler will produce
// one 'pragma_unused' annotation token followed by the argument token.
ANNOTATION(pragma_unused)
// Annotation for #pragma GCC visibility...
// The lexer produces these so that they only take effect when the parser
// handles them.
ANNOTATION(pragma_vis)
// Annotation for #pragma pack...
// The lexer produces these so that they only take effect when the parser
// handles them.
ANNOTATION(pragma_pack)
#undef ANNOTATION
#undef TESTING_KEYWORD
#undef OBJC2_AT_KEYWORD
#undef OBJC1_AT_KEYWORD
#undef CXX_KEYWORD_OPERATOR
#undef PPKEYWORD
#undef ALIAS
#undef KEYWORD
#undef PUNCTUATOR
#undef TOK