#pragma once
#define COMPILER(WTF_FEATURE) (defined WTF_COMPILER_##WTF_FEATURE && WTF_COMPILER_##WTF_FEATURE)
#define COMPILER_SUPPORTS(WTF_COMPILER_FEATURE) (defined WTF_COMPILER_SUPPORTS_##WTF_COMPILER_FEATURE && WTF_COMPILER_SUPPORTS_##WTF_COMPILER_FEATURE)
#define COMPILER_QUIRK(WTF_COMPILER_QUIRK) (defined WTF_COMPILER_QUIRK_##WTF_COMPILER_QUIRK && WTF_COMPILER_QUIRK_##WTF_COMPILER_QUIRK)
#ifdef __has_builtin
#define COMPILER_HAS_CLANG_BUILTIN(x) __has_builtin(x)
#else
#define COMPILER_HAS_CLANG_BUILTIN(x) 0
#endif
#ifdef __has_feature
#define COMPILER_HAS_CLANG_FEATURE(x) __has_feature(x)
#else
#define COMPILER_HAS_CLANG_FEATURE(x) 0
#endif
#ifdef __has_declspec_attribute
#define COMPILER_HAS_CLANG_DECLSPEC(x) __has_declspec_attribute(x)
#else
#define COMPILER_HAS_CLANG_DECLSPEC(x) 0
#endif
#if defined(__clang__)
#define WTF_COMPILER_CLANG 1
#define WTF_COMPILER_SUPPORTS_BLOCKS COMPILER_HAS_CLANG_FEATURE(blocks)
#define WTF_COMPILER_SUPPORTS_C_STATIC_ASSERT COMPILER_HAS_CLANG_FEATURE(c_static_assert)
#define WTF_COMPILER_SUPPORTS_CXX_EXCEPTIONS COMPILER_HAS_CLANG_FEATURE(cxx_exceptions)
#define WTF_COMPILER_SUPPORTS_BUILTIN_IS_TRIVIALLY_COPYABLE COMPILER_HAS_CLANG_FEATURE(is_trivially_copyable)
#ifdef __cplusplus
#if __cplusplus <= 201103L
#define WTF_CPP_STD_VER 11
#elif __cplusplus <= 201402L
#define WTF_CPP_STD_VER 14
#elif __cplusplus <= 201703L
#define WTF_CPP_STD_VER 17
#endif
#endif
#endif // defined(__clang__)
#if defined(__GNUC__)
#define WTF_COMPILER_GCC_COMPATIBLE 1
#endif
#if COMPILER(GCC_COMPATIBLE) && !COMPILER(CLANG)
#define WTF_COMPILER_GCC 1
#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#define GCC_VERSION_AT_LEAST(major, minor, patch) (GCC_VERSION >= (major * 10000 + minor * 100 + patch))
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define WTF_COMPILER_SUPPORTS_C_STATIC_ASSERT 1
#endif
#endif
#if COMPILER(GCC_COMPATIBLE) && defined(NDEBUG) && !defined(__OPTIMIZE__) && !defined(RELEASE_WITHOUT_OPTIMIZATIONS)
#error "Building release without compiler optimizations: WebKit will be slow. Set -DRELEASE_WITHOUT_OPTIMIZATIONS if this is intended."
#endif
#if defined(__MINGW32__)
#define WTF_COMPILER_MINGW 1
#include <_mingw.h>
#endif
#if COMPILER(MINGW) && defined(__MINGW64_VERSION_MAJOR)
#define WTF_COMPILER_MINGW64 1
#endif
#if defined(_MSC_VER)
#define WTF_COMPILER_MSVC 1
#if _MSC_VER < 1910
#error "Please use a newer version of Visual Studio. WebKit requires VS2017 or newer to compile."
#endif
#endif
#if !COMPILER(CLANG) && !COMPILER(MSVC)
#define WTF_COMPILER_QUIRK_CONSIDERS_UNREACHABLE_CODE 1
#endif
#if defined(__ARM_EABI__) || defined(__EABI__)
#define WTF_COMPILER_SUPPORTS_EABI 1
#endif
#ifdef __SANITIZE_ADDRESS__
#define ASAN_ENABLED 1
#else
#define ASAN_ENABLED COMPILER_HAS_CLANG_FEATURE(address_sanitizer)
#endif
#if ASAN_ENABLED
#define SUPPRESS_ASAN __attribute__((no_sanitize_address))
#else
#define SUPPRESS_ASAN
#endif
#if !defined(ALWAYS_INLINE) && COMPILER(GCC_COMPATIBLE) && defined(NDEBUG) && !COMPILER(MINGW) && !(COMPILER(GCC) && ASAN_ENABLED)
#define ALWAYS_INLINE inline __attribute__((__always_inline__))
#endif
#if !defined(ALWAYS_INLINE) && COMPILER(MSVC) && defined(NDEBUG)
#define ALWAYS_INLINE __forceinline
#endif
#if !defined(ALWAYS_INLINE)
#define ALWAYS_INLINE inline
#endif
#if COMPILER(MSVC)
#define ALWAYS_INLINE_EXCEPT_MSVC inline
#else
#define ALWAYS_INLINE_EXCEPT_MSVC ALWAYS_INLINE
#endif
#ifdef __cplusplus
#define WTF_EXTERN_C_BEGIN extern "C" {
#define WTF_EXTERN_C_END }
#else
#define WTF_EXTERN_C_BEGIN
#define WTF_EXTERN_C_END
#endif
#if !defined(FALLTHROUGH) && defined(__cplusplus) && defined(__has_cpp_attribute)
#if __has_cpp_attribute(fallthrough)
#define FALLTHROUGH [[fallthrough]]
#elif __has_cpp_attribute(clang::fallthrough)
#define FALLTHROUGH [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
#define FALLTHROUGH [[gnu::fallthrough]]
#endif
#elif !defined(FALLTHROUGH) && !defined(__cplusplus)
#if COMPILER(GCC)
#if GCC_VERSION_AT_LEAST(7, 0, 0)
#define FALLTHROUGH __attribute__ ((fallthrough))
#endif
#endif
#endif // !defined(FALLTHROUGH) && defined(__cplusplus) && defined(__has_cpp_attribute)
#if !defined(FALLTHROUGH)
#define FALLTHROUGH
#endif
#if !defined(LIKELY) && COMPILER(GCC_COMPATIBLE)
#define LIKELY(x) __builtin_expect(!!(x), 1)
#endif
#if !defined(LIKELY)
#define LIKELY(x) (x)
#endif
#if !defined(NEVER_INLINE) && COMPILER(GCC_COMPATIBLE)
#define NEVER_INLINE __attribute__((__noinline__))
#endif
#if !defined(NEVER_INLINE) && COMPILER(MSVC)
#define NEVER_INLINE __declspec(noinline)
#endif
#if !defined(NEVER_INLINE)
#define NEVER_INLINE
#endif
#if !defined(NO_RETURN) && COMPILER(GCC_COMPATIBLE)
#define NO_RETURN __attribute((__noreturn__))
#endif
#if !defined(NO_RETURN) && COMPILER(MSVC)
#define NO_RETURN __declspec(noreturn)
#endif
#if !defined(NO_RETURN)
#define NO_RETURN
#endif
#if !defined(NOT_TAIL_CALLED) && defined(__has_attribute)
#if __has_attribute(not_tail_called)
#define NOT_TAIL_CALLED __attribute__((not_tail_called))
#endif
#endif
#if !defined(NOT_TAIL_CALLED)
#define NOT_TAIL_CALLED
#endif
#if !defined(RETURNS_NONNULL) && COMPILER(GCC_COMPATIBLE)
#define RETURNS_NONNULL __attribute__((returns_nonnull))
#endif
#if !defined(RETURNS_NONNULL)
#define RETURNS_NONNULL
#endif
#if !defined(NO_RETURN_WITH_VALUE) && !COMPILER(MSVC)
#define NO_RETURN_WITH_VALUE NO_RETURN
#endif
#if !defined(NO_RETURN_WITH_VALUE)
#define NO_RETURN_WITH_VALUE
#endif
#if !defined(OBJC_CLASS) && defined(__OBJC__)
#define OBJC_CLASS @class
#endif
#if !defined(OBJC_CLASS)
#define OBJC_CLASS class
#endif
#if !defined(OBJC_PROTOCOL) && defined(__OBJC__)
#define OBJC_PROTOCOL(protocolName) @protocol protocolName; using protocolName = NSObject<protocolName>
#endif
#if !defined(OBJC_PROTOCOL)
#define OBJC_PROTOCOL(protocolName) class protocolName
#endif
#if !defined(PURE_FUNCTION) && COMPILER(GCC_COMPATIBLE)
#define PURE_FUNCTION __attribute__((__pure__))
#endif
#if !defined(PURE_FUNCTION)
#define PURE_FUNCTION
#endif
#if !defined(UNUSED_FUNCTION) && COMPILER(GCC_COMPATIBLE)
#define UNUSED_FUNCTION __attribute__((unused))
#endif
#if !defined(UNUSED_FUNCTION)
#define UNUSED_FUNCTION
#endif
#if !defined(REFERENCED_FROM_ASM) && COMPILER(GCC_COMPATIBLE)
#define REFERENCED_FROM_ASM __attribute__((__used__))
#endif
#if !defined(REFERENCED_FROM_ASM)
#define REFERENCED_FROM_ASM
#endif
#if !defined(UNLIKELY) && COMPILER(GCC_COMPATIBLE)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#endif
#if !defined(UNLIKELY)
#define UNLIKELY(x) (x)
#endif
#if !defined(UNUSED_LABEL) && COMPILER(MSVC)
#define UNUSED_LABEL(label) if (false) goto label
#endif
#if !defined(UNUSED_LABEL)
#define UNUSED_LABEL(label) UNUSED_PARAM(&& label)
#endif
#if !defined(UNUSED_PARAM)
#define UNUSED_PARAM(variable) (void)variable
#endif
#if !defined(UNUSED_VARIABLE)
#define UNUSED_VARIABLE(variable) UNUSED_PARAM(variable)
#endif
#if !defined(WARN_UNUSED_RETURN) && COMPILER(GCC_COMPATIBLE)
#define WARN_UNUSED_RETURN __attribute__((__warn_unused_result__))
#endif
#if !defined(WARN_UNUSED_RETURN)
#define WARN_UNUSED_RETURN
#endif
#if !defined(__has_include) && COMPILER(MSVC)
#define __has_include(path) 0
#endif
#define _COMPILER_CONCAT_I(a, b) a ## b
#define _COMPILER_CONCAT(a, b) _COMPILER_CONCAT_I(a, b)
#define _COMPILER_STRINGIZE(exp) #exp
#define _COMPILER_WARNING_NAME(warning) "-W" warning
#if COMPILER(GCC) || COMPILER(CLANG)
#define IGNORE_WARNINGS_BEGIN_COND(cond, compiler, warning) \
_Pragma(_COMPILER_STRINGIZE(compiler diagnostic push)) \
_COMPILER_CONCAT(IGNORE_WARNINGS_BEGIN_IMPL_, cond)(compiler, warning)
#define IGNORE_WARNINGS_BEGIN_IMPL_1(compiler, warning) \
_Pragma(_COMPILER_STRINGIZE(compiler diagnostic ignored warning))
#define IGNORE_WARNINGS_BEGIN_IMPL_0(compiler, warning)
#define IGNORE_WARNINGS_BEGIN_IMPL_(compiler, warning)
#define IGNORE_WARNINGS_END_IMPL(compiler) _Pragma(_COMPILER_STRINGIZE(compiler diagnostic pop))
#if defined(__has_warning)
#define _IGNORE_WARNINGS_BEGIN_IMPL(compiler, warning) \
IGNORE_WARNINGS_BEGIN_COND(__has_warning(warning), compiler, warning)
#else
#define _IGNORE_WARNINGS_BEGIN_IMPL(compiler, warning) IGNORE_WARNINGS_BEGIN_COND(1, compiler, warning)
#endif
#define IGNORE_WARNINGS_BEGIN_IMPL(compiler, warning) \
_IGNORE_WARNINGS_BEGIN_IMPL(compiler, _COMPILER_WARNING_NAME(warning))
#endif // COMPILER(GCC) || COMPILER(CLANG)
#if COMPILER(GCC)
#define IGNORE_GCC_WARNINGS_BEGIN(warning) IGNORE_WARNINGS_BEGIN_IMPL(GCC, warning)
#define IGNORE_GCC_WARNINGS_END IGNORE_WARNINGS_END_IMPL(GCC)
#else
#define IGNORE_GCC_WARNINGS_BEGIN(warning)
#define IGNORE_GCC_WARNINGS_END
#endif
#if COMPILER(CLANG)
#define IGNORE_CLANG_WARNINGS_BEGIN(warning) IGNORE_WARNINGS_BEGIN_IMPL(clang, warning)
#define IGNORE_CLANG_WARNINGS_END IGNORE_WARNINGS_END_IMPL(clang)
#else
#define IGNORE_CLANG_WARNINGS_BEGIN(warning)
#define IGNORE_CLANG_WARNINGS_END
#endif
#if COMPILER(GCC) || COMPILER(CLANG)
#define IGNORE_WARNINGS_BEGIN(warning) IGNORE_WARNINGS_BEGIN_IMPL(GCC, warning)
#define IGNORE_WARNINGS_END IGNORE_WARNINGS_END_IMPL(GCC)
#else
#define IGNORE_WARNINGS_BEGIN(warning)
#define IGNORE_WARNINGS_END
#endif
#define ALLOW_DEPRECATED_DECLARATIONS_BEGIN IGNORE_WARNINGS_BEGIN("deprecated-declarations")
#define ALLOW_DEPRECATED_DECLARATIONS_END IGNORE_WARNINGS_END
#define ALLOW_NEW_API_WITHOUT_GUARDS_BEGIN IGNORE_CLANG_WARNINGS_BEGIN("unguarded-availability-new")
#define ALLOW_NEW_API_WITHOUT_GUARDS_END IGNORE_CLANG_WARNINGS_END
#define ALLOW_UNUSED_PARAMETERS_BEGIN IGNORE_WARNINGS_BEGIN("unused-parameter")
#define ALLOW_UNUSED_PARAMETERS_END IGNORE_WARNINGS_END
#define ALLOW_NONLITERAL_FORMAT_BEGIN IGNORE_WARNINGS_BEGIN("format-nonliteral")
#define ALLOW_NONLITERAL_FORMAT_END IGNORE_WARNINGS_END
#define IGNORE_RETURN_TYPE_WARNINGS_BEGIN IGNORE_WARNINGS_BEGIN("return-type")
#define IGNORE_RETURN_TYPE_WARNINGS_END IGNORE_WARNINGS_END
#define IGNORE_NULL_CHECK_WARNINGS_BEGIN IGNORE_WARNINGS_BEGIN("nonnull")
#define IGNORE_NULL_CHECK_WARNINGS_END IGNORE_WARNINGS_END