/* GLIB - Library of useful routines for C programming

 * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald

 *

 * SPDX-License-Identifier: LGPL-2.1-or-later

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, see <http://www.gnu.org/licenses/>.

 */

/*

 * Modified by the GLib Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GLib Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GLib at ftp://ftp.gtk.org/pub/gtk/.

 */

/* This file must not include any other glib header file and must thus

 * not refer to variables from glibconfig.h

 */

#ifndef __G_MACROS_H__

#define __G_MACROS_H__

#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)

#error "Only <glib.h> can be included directly."

#endif

/* We include stddef.h to get the system's definition of NULL

 */

#include <stddef.h>

/*

 * Note: Clang (but not clang-cl) defines __GNUC__ and __GNUC_MINOR__.

 * Both Clang 11.1 on current Arch Linux and Apple's Clang 12.0 define

 * __GNUC__ = 4 and __GNUC_MINOR__ = 2. So G_GNUC_CHECK_VERSION(4, 2) on

 * current Clang will be 1.

 */

#ifdef __GNUC__

#define G_GNUC_CHECK_VERSION(major, minor) \

    ((__GNUC__ > (major)) || \

     ((__GNUC__ == (major)) && \

      (__GNUC_MINOR__ >= (minor))))

#else

#define G_GNUC_CHECK_VERSION(major, minor) 0

#endif

/* Here we provide G_GNUC_EXTENSION as an alias for __extension__,

 * where this is valid. This allows for warningless compilation of

 * "long long" types even in the presence of '-ansi -pedantic'. 

 */

#if G_GNUC_CHECK_VERSION(2, 8)

#define G_GNUC_EXTENSION __extension__

#else

#define G_GNUC_EXTENSION

#endif

#if !defined (__cplusplus)

# undef G_CXX_STD_VERSION

# define G_CXX_STD_CHECK_VERSION(version) (0)

# if defined (__STDC_VERSION__)

#  define G_C_STD_VERSION __STDC_VERSION__

# else

#  define G_C_STD_VERSION 199000L

# endif /* defined (__STDC_VERSION__) */

# define G_C_STD_CHECK_VERSION(version) ( \

  ((version) >= 199000L && (version) <= G_C_STD_VERSION) || \

  ((version) == 89 && G_C_STD_VERSION >= 199000L) || \

  ((version) == 90 && G_C_STD_VERSION >= 199000L) || \

  ((version) == 99 && G_C_STD_VERSION >= 199901L) || \

  ((version) == 11 && G_C_STD_VERSION >= 201112L) || \

  ((version) == 17 && G_C_STD_VERSION >= 201710L) || \

  0)

#else /* defined (__cplusplus) */

# undef G_C_STD_VERSION

# define G_C_STD_CHECK_VERSION(version) (0)

# if defined (_MSVC_LANG)

#  define G_CXX_STD_VERSION (_MSVC_LANG > __cplusplus ? _MSVC_LANG : __cplusplus)

# else

#  define G_CXX_STD_VERSION __cplusplus

# endif /* defined(_MSVC_LANG) */

# define G_CXX_STD_CHECK_VERSION(version) ( \

  ((version) >= 199711L && (version) <= G_CXX_STD_VERSION) || \

  ((version) == 98 && G_CXX_STD_VERSION >= 199711L) || \

  ((version) == 03 && G_CXX_STD_VERSION >= 199711L) || \

  ((version) == 11 && G_CXX_STD_VERSION >= 201103L) || \

  ((version) == 14 && G_CXX_STD_VERSION >= 201402L) || \

  ((version) == 17 && G_CXX_STD_VERSION >= 201703L) || \

  ((version) == 20 && G_CXX_STD_VERSION >= 202002L) || \

  0)

#endif /* !defined (__cplusplus) */

/* Every compiler that we target supports inlining, but some of them may

 * complain about it if we don't say "__inline".  If we have C99, or if

 * we are using C++, then we can use "inline" directly.

 * Otherwise, we say "__inline" to avoid the warning.

 * Unfortunately Visual Studio does not define __STDC_VERSION__ (if not

 * using /std:cXX) so we need to check whether we are on Visual Studio 2013

 * or earlier to see whether we need to say "__inline" in C mode.

 */

#define G_CAN_INLINE

#ifdef G_C_STD_VERSION

# ifdef _MSC_VER

#  if (_MSC_VER < 1900)

#   define G_INLINE_DEFINE_NEEDED

#  endif

# elif !G_C_STD_CHECK_VERSION (99)

#  define G_INLINE_DEFINE_NEEDED

# endif

#endif

#ifdef G_INLINE_DEFINE_NEEDED

# undef inline

# define inline __inline

#endif

#undef G_INLINE_DEFINE_NEEDED

/**

 * G_INLINE_FUNC:

 *

 * This macro used to be used to conditionally define inline functions

 * in a compatible way before this feature was supported in all

 * compilers.  These days, GLib requires inlining support from the

 * compiler, so your GLib-using programs can safely assume that the

 * "inline" keyword works properly.

 *

 * Never use this macro anymore.  Just say "static inline".

 *

 * Deprecated: 2.48: Use "static inline" instead

 */

/* For historical reasons we need to continue to support those who

 * define G_IMPLEMENT_INLINES to mean "don't implement this here".

 */

#ifdef G_IMPLEMENT_INLINES

#  define G_INLINE_FUNC extern GLIB_DEPRECATED_MACRO_IN_2_48_FOR(static inline)

#  undef  G_CAN_INLINE

#else

#  define G_INLINE_FUNC static inline GLIB_DEPRECATED_MACRO_IN_2_48_FOR(static inline)

#endif /* G_IMPLEMENT_INLINES */

/*

 * Attribute support detection. Works on clang and GCC >= 5

 * https://clang.llvm.org/docs/LanguageExtensions.html#has-attribute

 * https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html

 */

#ifdef __has_attribute

#define g_macro__has_attribute __has_attribute

#else

/*

 * Fallback for GCC < 5 and other compilers not supporting __has_attribute.

 */

#define g_macro__has_attribute(x) g_macro__has_attribute_##x

#define g_macro__has_attribute___alloc_size__ G_GNUC_CHECK_VERSION (4, 3)

#define g_macro__has_attribute___always_inline__ G_GNUC_CHECK_VERSION (2, 0)

#define g_macro__has_attribute___const__ G_GNUC_CHECK_VERSION (2, 4)

#define g_macro__has_attribute___deprecated__ G_GNUC_CHECK_VERSION (3, 1)

#define g_macro__has_attribute___format__ G_GNUC_CHECK_VERSION (2, 4)

#define g_macro__has_attribute___format_arg__ G_GNUC_CHECK_VERSION (2, 4)

#define g_macro__has_attribute___malloc__ G_GNUC_CHECK_VERSION (2, 96)

#define g_macro__has_attribute___no_instrument_function__ G_GNUC_CHECK_VERSION (2, 4)

#define g_macro__has_attribute___noinline__ G_GNUC_CHECK_VERSION (2, 96)

#define g_macro__has_attribute___noreturn__ (G_GNUC_CHECK_VERSION (2, 8) || (0x5110 <= __SUNPRO_C))

#define g_macro__has_attribute___pure__ G_GNUC_CHECK_VERSION (2, 96)

#define g_macro__has_attribute___sentinel__ G_GNUC_CHECK_VERSION (4, 0)

#define g_macro__has_attribute___unused__ G_GNUC_CHECK_VERSION (2, 4)

#define g_macro__has_attribute___weak__ G_GNUC_CHECK_VERSION (2, 8)

#define g_macro__has_attribute_cleanup G_GNUC_CHECK_VERSION (3, 3)

#define g_macro__has_attribute_fallthrough G_GNUC_CHECK_VERSION (6, 0)

#define g_macro__has_attribute_may_alias G_GNUC_CHECK_VERSION (3, 3)

#define g_macro__has_attribute_warn_unused_result G_GNUC_CHECK_VERSION (3, 4)

#endif

/* Provide macros to feature the GCC function attribute.

 */

/**

 * G_GNUC_PURE:

 *

 * Expands to the GNU C `pure` function attribute if the compiler is gcc.

 * Declaring a function as `pure` enables better optimization of calls to

 * the function. A `pure` function has no effects except its return value

 * and the return value depends only on the parameters and/or global

 * variables.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * gboolean g_type_check_value (const GValue *value) G_GNUC_PURE;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-pure-function-attribute) for more details.

 */

/**

 * G_GNUC_MALLOC:

 *

 * Expands to the

 * [GNU C `malloc` function attribute](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-functions-that-behave-like-malloc)

 * if the compiler is gcc.

 * Declaring a function as `malloc` enables better optimization of the function,

 * but must only be done if the allocation behaviour of the function is fully

 * understood, otherwise miscompilation can result.

 *

 * A function can have the `malloc` attribute if it returns a pointer which is

 * guaranteed to not alias with any other pointer valid when the function

 * returns, and moreover no pointers to valid objects occur in any storage

 * addressed by the returned pointer.

 *

 * In practice, this means that `G_GNUC_MALLOC` can be used with any function

 * which returns unallocated or zeroed-out memory, but not with functions which

 * return initialised structures containing other pointers, or with functions

 * that reallocate memory. This definition changed in GLib 2.58 to match the

 * stricter definition introduced around GCC 5.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * gpointer g_malloc (gsize n_bytes) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1);

 * ]|

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-functions-that-behave-like-malloc)

 * for more details.

 *

 * Since: 2.6

 */

/**

 * G_GNUC_NO_INLINE:

 *

 * Expands to the GNU C `noinline` function attribute if the compiler is gcc.

 * If the compiler is not gcc, this macro expands to nothing.

 *

 * Declaring a function as `noinline` prevents the function from being

 * considered for inlining.

 *

 * This macro is provided for retro-compatibility and will be eventually

 * deprecated, but %G_NO_INLINE should be used instead.

 *

 * The attribute may be placed before the declaration or definition,

 * right before the `static` keyword.

 *

 * |[<!-- language="C" -->

 * G_GNUC_NO_INLINE

 * static int

 * do_not_inline_this (void)

 * {

 *   ...

 * }

 * ]|

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-noinline-function-attribute)

 * for more details.

 *

 * See also: %G_NO_INLINE, %G_ALWAYS_INLINE.

 *

 * Since: 2.58

 */

#if g_macro__has_attribute(__pure__)

#define G_GNUC_PURE __attribute__((__pure__))

#else

#define G_GNUC_PURE

#endif

#if g_macro__has_attribute(__malloc__)

#define G_GNUC_MALLOC __attribute__ ((__malloc__))

#else

#define G_GNUC_MALLOC

#endif

#if g_macro__has_attribute(__noinline__)

#define G_GNUC_NO_INLINE __attribute__ ((__noinline__)) \

  GLIB_AVAILABLE_MACRO_IN_2_58

#else

#define G_GNUC_NO_INLINE \

  GLIB_AVAILABLE_MACRO_IN_2_58

#endif

/**

 * G_GNUC_NULL_TERMINATED:

 *

 * Expands to the GNU C `sentinel` function attribute if the compiler is gcc.

 * This function attribute only applies to variadic functions and instructs

 * the compiler to check that the argument list is terminated with an

 * explicit %NULL.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * gchar *g_strconcat (const gchar *string1,

 *                     ...) G_GNUC_NULL_TERMINATED;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-sentinel-function-attribute) for more details.

 *

 * Since: 2.8

 */

#if g_macro__has_attribute(__sentinel__)

#define G_GNUC_NULL_TERMINATED __attribute__((__sentinel__))

#else

#define G_GNUC_NULL_TERMINATED

#endif

/*

 * Clang feature detection: http://clang.llvm.org/docs/LanguageExtensions.html

 * These are not available on GCC, but since the pre-processor doesn't do

 * operator short-circuiting, we can't use it in a statement or we'll get:

 *

 * error: missing binary operator before token "("

 *

 * So we define it to 0 to satisfy the pre-processor.

 */

#ifdef __has_feature

#define g_macro__has_feature __has_feature

#else

#define g_macro__has_feature(x) 0

#endif

#ifdef __has_builtin

#define g_macro__has_builtin __has_builtin

#else

#define g_macro__has_builtin(x) 0

#endif

#ifdef __has_extension

#define g_macro__has_extension __has_extension

#else

#define g_macro__has_extension(x) 0

#endif

/**

 * G_GNUC_ALLOC_SIZE:

 * @x: the index of the argument specifying the allocation size

 *

 * Expands to the GNU C `alloc_size` function attribute if the compiler

 * is a new enough gcc. This attribute tells the compiler that the

 * function returns a pointer to memory of a size that is specified

 * by the @xth function parameter.

 *

 * Place the attribute after the function declaration, just before the

 * semicolon.

 *

 * |[<!-- language="C" -->

 * gpointer g_malloc (gsize n_bytes) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1);

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute) for more details.

 *

 * Since: 2.18

 */

/**

 * G_GNUC_ALLOC_SIZE2:

 * @x: the index of the argument specifying one factor of the allocation size

 * @y: the index of the argument specifying the second factor of the allocation size

 *

 * Expands to the GNU C `alloc_size` function attribute if the compiler is a

 * new enough gcc. This attribute tells the compiler that the function returns

 * a pointer to memory of a size that is specified by the product of two

 * function parameters.

 *

 * Place the attribute after the function declaration, just before the

 * semicolon.

 *

 * |[<!-- language="C" -->

 * gpointer g_malloc_n (gsize n_blocks,

 *                      gsize n_block_bytes) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE2(1, 2);

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute) for more details.

 *

 * Since: 2.18

 */

#if g_macro__has_attribute(__alloc_size__)

#define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))

#define G_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y)))

#else

#define G_GNUC_ALLOC_SIZE(x)

#define G_GNUC_ALLOC_SIZE2(x,y)

#endif

/**

 * G_GNUC_PRINTF:

 * @format_idx: the index of the argument corresponding to the

 *     format string (the arguments are numbered from 1)

 * @arg_idx: the index of the first of the format arguments, or 0 if

 *     there are no format arguments

 *

 * Expands to the GNU C `format` function attribute if the compiler is gcc.

 * This is used for declaring functions which take a variable number of

 * arguments, with the same syntax as `printf()`. It allows the compiler

 * to type-check the arguments passed to the function.

 *

 * Place the attribute after the function declaration, just before the

 * semicolon.

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-3288)

 * for more details.

 *

 * |[<!-- language="C" -->

 * gint g_snprintf (gchar  *string,

 *                  gulong       n,

 *                  gchar const *format,

 *                  ...) G_GNUC_PRINTF (3, 4);

 * ]|

 */

/**

 * G_GNUC_SCANF:

 * @format_idx: the index of the argument corresponding to

 *     the format string (the arguments are numbered from 1)

 * @arg_idx: the index of the first of the format arguments, or 0 if

 *     there are no format arguments

 *

 * Expands to the GNU C `format` function attribute if the compiler is gcc.

 * This is used for declaring functions which take a variable number of

 * arguments, with the same syntax as `scanf()`. It allows the compiler

 * to type-check the arguments passed to the function.

 *

 * |[<!-- language="C" -->

 * int my_scanf (MyStream *stream,

 *               const char *format,

 *               ...) G_GNUC_SCANF (2, 3);

 * int my_vscanf (MyStream *stream,

 *                const char *format,

 *                va_list ap) G_GNUC_SCANF (2, 0);

 * ]|

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-3288)

 * for details.

 */

/**

 * G_GNUC_STRFTIME:

 * @format_idx: the index of the argument corresponding to

 *     the format string (the arguments are numbered from 1)

 *

 * Expands to the GNU C `strftime` format function attribute if the compiler

 * is gcc. This is used for declaring functions which take a format argument

 * which is passed to `strftime()` or an API implementing its formats. It allows

 * the compiler check the format passed to the function.

 *

 * |[<!-- language="C" -->

 * gsize my_strftime (MyBuffer *buffer,

 *                    const char *format,

 *                    const struct tm *tm) G_GNUC_STRFTIME (2);

 * ]|

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-3288)

 * for details.

 *

 * Since: 2.60

 */

/**

 * G_GNUC_FORMAT:

 * @arg_idx: the index of the argument

 *

 * Expands to the GNU C `format_arg` function attribute if the compiler

 * is gcc. This function attribute specifies that a function takes a

 * format string for a `printf()`, `scanf()`, `strftime()` or `strfmon()` style

 * function and modifies it, so that the result can be passed to a `printf()`,

 * `scanf()`, `strftime()` or `strfmon()` style function (with the remaining

 * arguments to the format function the same as they would have been

 * for the unmodified string).

 *

 * Place the attribute after the function declaration, just before the

 * semicolon.

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-Wformat-nonliteral-1) for more details.

 *

 * |[<!-- language="C" -->

 * gchar *g_dgettext (gchar *domain_name, gchar *msgid) G_GNUC_FORMAT (2);

 * ]|

 */

/**

 * G_GNUC_NORETURN:

 *

 * Expands to the GNU C `noreturn` function attribute if the compiler is gcc.

 * It is used for declaring functions which never return. It enables

 * optimization of the function, and avoids possible compiler warnings.

 *

 * Since 2.68, it is recommended that code uses %G_NORETURN instead of

 * %G_GNUC_NORETURN, as that works on more platforms and compilers (in

 * particular, MSVC and C++11) than %G_GNUC_NORETURN, which works with GCC and

 * Clang only. %G_GNUC_NORETURN continues to work, so has not been deprecated

 * yet.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * void g_abort (void) G_GNUC_NORETURN;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-noreturn-function-attribute) for more details.

 */

/**

 * G_GNUC_CONST:

 *

 * Expands to the GNU C `const` function attribute if the compiler is gcc.

 * Declaring a function as `const` enables better optimization of calls to

 * the function. A `const` function doesn't examine any values except its

 * parameters, and has no effects except its return value.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * gchar g_ascii_tolower (gchar c) G_GNUC_CONST;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-const-function-attribute) for more details.

 *

 * A function that has pointer arguments and examines the data pointed to

 * must not be declared `const`. Likewise, a function that calls a non-`const`

 * function usually must not be `const`. It doesn't make sense for a `const`

 * function to return `void`.

 */

/**

 * G_GNUC_UNUSED:

 *

 * Expands to the GNU C `unused` function attribute if the compiler is gcc.

 * It is used for declaring functions and arguments which may never be used.

 * It avoids possible compiler warnings.

 *

 * For functions, place the attribute after the declaration, just before the

 * semicolon. For arguments, place the attribute at the beginning of the

 * argument declaration.

 *

 * |[<!-- language="C" -->

 * void my_unused_function (G_GNUC_UNUSED gint unused_argument,

 *                          gint other_argument) G_GNUC_UNUSED;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-unused-function-attribute) for more details.

 */

/**

 * G_GNUC_NO_INSTRUMENT:

 *

 * Expands to the GNU C `no_instrument_function` function attribute if the

 * compiler is gcc. Functions with this attribute will not be instrumented

 * for profiling, when the compiler is called with the

 * `-finstrument-functions` option.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * int do_uninteresting_things (void) G_GNUC_NO_INSTRUMENT;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-no_005finstrument_005ffunction-function-attribute) for more details.

 */

#if g_macro__has_attribute(__format__)

#if !defined (__clang__) && G_GNUC_CHECK_VERSION (4, 4)

#define G_GNUC_PRINTF( format_idx, arg_idx )    \

  __attribute__((__format__ (gnu_printf, format_idx, arg_idx)))

#define G_GNUC_SCANF( format_idx, arg_idx )     \

  __attribute__((__format__ (gnu_scanf, format_idx, arg_idx)))

#define G_GNUC_STRFTIME( format_idx )    \

  __attribute__((__format__ (gnu_strftime, format_idx, 0))) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#else

#define G_GNUC_PRINTF( format_idx, arg_idx )    \

  __attribute__((__format__ (__printf__, format_idx, arg_idx)))

#define G_GNUC_SCANF( format_idx, arg_idx )     \

  __attribute__((__format__ (__scanf__, format_idx, arg_idx)))

#define G_GNUC_STRFTIME( format_idx )    \

  __attribute__((__format__ (__strftime__, format_idx, 0))) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#endif

#else

#define G_GNUC_PRINTF( format_idx, arg_idx )

#define G_GNUC_SCANF( format_idx, arg_idx )

#define G_GNUC_STRFTIME( format_idx ) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#endif

#if g_macro__has_attribute(__format_arg__)

#define G_GNUC_FORMAT(arg_idx) \

  __attribute__ ((__format_arg__ (arg_idx)))

#else

#define G_GNUC_FORMAT( arg_idx )

#endif

#if g_macro__has_attribute(__noreturn__)

#define G_GNUC_NORETURN \

  __attribute__ ((__noreturn__))

#else

/* NOTE: MSVC has __declspec(noreturn) but unlike GCC __attribute__,

 * __declspec can only be placed at the start of the function prototype

 * and not at the end, so we can't use it without breaking API.

 */

#define G_GNUC_NORETURN

#endif

#if g_macro__has_attribute(__const__)

#define G_GNUC_CONST \

  __attribute__ ((__const__))

#else

#define G_GNUC_CONST

#endif

#if g_macro__has_attribute(__unused__)

#define G_GNUC_UNUSED \

  __attribute__ ((__unused__))

#else

#define G_GNUC_UNUSED

#endif

#if g_macro__has_attribute(__no_instrument_function__)

#define G_GNUC_NO_INSTRUMENT \

  __attribute__ ((__no_instrument_function__))

#else

#define G_GNUC_NO_INSTRUMENT

#endif

/**

 * G_GNUC_FALLTHROUGH:

 *

 * Expands to the GNU C `fallthrough` statement attribute if the compiler supports it.

 * This allows declaring case statement to explicitly fall through in switch

 * statements. To enable this feature, use `-Wimplicit-fallthrough` during

 * compilation.

 *

 * Put the attribute right before the case statement you want to fall through

 * to.

 *

 * |[<!-- language="C" -->

 * switch (foo)

 *   {

 *     case 1:

 *       g_message ("it's 1");

 *       G_GNUC_FALLTHROUGH;

 *     case 2:

 *       g_message ("it's either 1 or 2");

 *       break;

 *   }

 * ]|

 *

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#index-fallthrough-statement-attribute) for more details.

 *

 * Since: 2.60

 */

#if g_macro__has_attribute(fallthrough)

#define G_GNUC_FALLTHROUGH __attribute__((fallthrough)) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#else

#define G_GNUC_FALLTHROUGH \

  GLIB_AVAILABLE_MACRO_IN_2_60

#endif

/**

 * G_GNUC_DEPRECATED:

 *

 * Expands to the GNU C `deprecated` attribute if the compiler is gcc.

 * It can be used to mark `typedef`s, variables and functions as deprecated.

 * When called with the `-Wdeprecated-declarations` option,

 * gcc will generate warnings when deprecated interfaces are used.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * int my_mistake (void) G_GNUC_DEPRECATED;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-deprecated-function-attribute) for more details.

 *

 * Since: 2.2

 */

#if g_macro__has_attribute(__deprecated__)

#define G_GNUC_DEPRECATED __attribute__((__deprecated__))

#else

#define G_GNUC_DEPRECATED

#endif /* __GNUC__ */

/**

 * G_GNUC_DEPRECATED_FOR:

 * @f: the intended replacement for the deprecated symbol,

 *     such as the name of a function

 *

 * Like %G_GNUC_DEPRECATED, but names the intended replacement for the

 * deprecated symbol if the version of gcc in use is new enough to support

 * custom deprecation messages.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * int my_mistake (void) G_GNUC_DEPRECATED_FOR(my_replacement);

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-deprecated-function-attribute) for more details.

 *

 * Note that if @f is a macro, it will be expanded in the warning message.

 * You can enclose it in quotes to prevent this. (The quotes will show up

 * in the warning, but it's better than showing the macro expansion.)

 *

 * Since: 2.26

 */

#if G_GNUC_CHECK_VERSION(4, 5) || defined(__clang__)

#define G_GNUC_DEPRECATED_FOR(f)                        \

  __attribute__((deprecated("Use " #f " instead")))     \

  GLIB_AVAILABLE_MACRO_IN_2_26

#else

#define G_GNUC_DEPRECATED_FOR(f)      G_GNUC_DEPRECATED \

  GLIB_AVAILABLE_MACRO_IN_2_26

#endif /* __GNUC__ */

#ifdef __ICC

#define G_GNUC_BEGIN_IGNORE_DEPRECATIONS                \

  _Pragma ("warning (push)")                            \

  _Pragma ("warning (disable:1478)")

#define G_GNUC_END_IGNORE_DEPRECATIONS      \

  _Pragma ("warning (pop)")

#elif G_GNUC_CHECK_VERSION(4, 6)

#define G_GNUC_BEGIN_IGNORE_DEPRECATIONS    \

  _Pragma ("GCC diagnostic push")     \

  _Pragma ("GCC diagnostic ignored \"-Wdeprecated-declarations\"")

#define G_GNUC_END_IGNORE_DEPRECATIONS      \

  _Pragma ("GCC diagnostic pop")

#elif defined (_MSC_VER) && (_MSC_VER >= 1500) && !defined (__clang__)

#define G_GNUC_BEGIN_IGNORE_DEPRECATIONS    \

  __pragma (warning (push))  \

  __pragma (warning (disable : 4996))

#define G_GNUC_END_IGNORE_DEPRECATIONS      \

  __pragma (warning (pop))

#elif defined (__clang__)

#define G_GNUC_BEGIN_IGNORE_DEPRECATIONS \

  _Pragma("clang diagnostic push") \

  _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")

#define G_GNUC_END_IGNORE_DEPRECATIONS \

  _Pragma("clang diagnostic pop")

#else

#define G_GNUC_BEGIN_IGNORE_DEPRECATIONS

#define G_GNUC_END_IGNORE_DEPRECATIONS

#define GLIB_CANNOT_IGNORE_DEPRECATIONS

#endif

/**

 * G_GNUC_MAY_ALIAS:

 *

 * Expands to the GNU C `may_alias` type attribute if the compiler is gcc.

 * Types with this attribute will not be subjected to type-based alias

 * analysis, but are assumed to alias with any other type, just like `char`.

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-may_005falias-type-attribute) for details.

 *

 * Since: 2.14

 */

#if g_macro__has_attribute(may_alias)

#define G_GNUC_MAY_ALIAS __attribute__((may_alias))

#else

#define G_GNUC_MAY_ALIAS

#endif

/**

 * G_GNUC_WARN_UNUSED_RESULT:

 *

 * Expands to the GNU C `warn_unused_result` function attribute if the compiler

 * is gcc. This function attribute makes the compiler emit a warning if the

 * result of a function call is ignored.

 *

 * Place the attribute after the declaration, just before the semicolon.

 *

 * |[<!-- language="C" -->

 * GList *g_list_append (GList *list,

 *                       gpointer data) G_GNUC_WARN_UNUSED_RESULT;

 * ]|

 *

 * See the [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-warn_005funused_005fresult-function-attribute) for more details.

 *

 * Since: 2.10

 */

#if g_macro__has_attribute(warn_unused_result)

#define G_GNUC_WARN_UNUSED_RESULT __attribute__((warn_unused_result))

#else

#define G_GNUC_WARN_UNUSED_RESULT

#endif /* __GNUC__ */

/**

 * G_GNUC_FUNCTION:

 *

 * Expands to "" on all modern compilers, and to  __FUNCTION__ on gcc

 * version 2.x. Don't use it.

 *

 * Deprecated: 2.16: Use G_STRFUNC() instead

 */

/**

 * G_GNUC_PRETTY_FUNCTION:

 *

 * Expands to "" on all modern compilers, and to __PRETTY_FUNCTION__

 * on gcc version 2.x. Don't use it.

 *

 * Deprecated: 2.16: Use G_STRFUNC() instead

 */

/* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with

 * macros, so we can refer to them as strings unconditionally.

 * usage not-recommended since gcc-3.0

 *

 * Mark them as deprecated since 2.26, since that’s when version macros were

 * introduced.

 */

#if defined (__GNUC__) && (__GNUC__ < 3)

#define G_GNUC_FUNCTION         __FUNCTION__ GLIB_DEPRECATED_MACRO_IN_2_26_FOR(G_STRFUNC)

#define G_GNUC_PRETTY_FUNCTION  __PRETTY_FUNCTION__ GLIB_DEPRECATED_MACRO_IN_2_26_FOR(G_STRFUNC)

#else   /* !__GNUC__ */

#define G_GNUC_FUNCTION         "" GLIB_DEPRECATED_MACRO_IN_2_26_FOR(G_STRFUNC)

#define G_GNUC_PRETTY_FUNCTION  "" GLIB_DEPRECATED_MACRO_IN_2_26_FOR(G_STRFUNC)

#endif  /* !__GNUC__ */

#if g_macro__has_feature(attribute_analyzer_noreturn) && defined(__clang_analyzer__)

#define G_ANALYZER_ANALYZING 1

#define G_ANALYZER_NORETURN __attribute__((analyzer_noreturn))

#elif defined(__COVERITY__)

#define G_ANALYZER_ANALYZING 1

#define G_ANALYZER_NORETURN __attribute__((noreturn))

#else

#define G_ANALYZER_ANALYZING 0

#define G_ANALYZER_NORETURN

#endif

#define G_STRINGIFY(macro_or_string)  G_STRINGIFY_ARG (macro_or_string)

#define G_STRINGIFY_ARG(contents) #contents

#ifndef __GI_SCANNER__ /* The static assert macro really confuses the introspection parser */

#define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2

#define G_PASTE(identifier1,identifier2)      G_PASTE_ARGS (identifier1, identifier2)

#if G_CXX_STD_CHECK_VERSION (11)

#define G_STATIC_ASSERT(expr) static_assert (expr, "Expression evaluates to false")

#elif (G_C_STD_CHECK_VERSION (11) || \

     g_macro__has_feature(c_static_assert) || g_macro__has_extension(c_static_assert))

#define G_STATIC_ASSERT(expr) _Static_assert (expr, "Expression evaluates to false")

#else

#ifdef __COUNTER__

#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __COUNTER__)[(expr) ? 1 : -1] G_GNUC_UNUSED

#else

#define G_STATIC_ASSERT(expr) typedef char G_PASTE (_GStaticAssertCompileTimeAssertion_, __LINE__)[(expr) ? 1 : -1] G_GNUC_UNUSED

#endif

#endif /* G_CXX_STD_CHECK_VERSION (11) */

#define G_STATIC_ASSERT_EXPR(expr) ((void) sizeof (char[(expr) ? 1 : -1]))

#endif /* !__GI_SCANNER__ */

/* Provide a string identifying the current code position */

#if defined (__GNUC__) && (__GNUC__ < 3) && !defined (G_CXX_STD_VERSION)

#define G_STRLOC  __FILE__ ":" G_STRINGIFY (__LINE__) ":" __PRETTY_FUNCTION__ "()"

#else

#define G_STRLOC  __FILE__ ":" G_STRINGIFY (__LINE__)

#endif

/* Provide a string identifying the current function, non-concatenatable */

#if defined (__GNUC__) && defined (G_CXX_STD_VERSION)

#define G_STRFUNC     ((const char*) (__PRETTY_FUNCTION__))

#elif G_C_STD_CHECK_VERSION (99)

#define G_STRFUNC     ((const char*) (__func__))

#elif defined (__GNUC__) || (defined(_MSC_VER) && (_MSC_VER > 1300))

#define G_STRFUNC     ((const char*) (__FUNCTION__))

#else

#define G_STRFUNC     ((const char*) ("???"))

#endif

/* Guard C code in headers, while including them from C++ */

#ifdef  G_CXX_STD_VERSION

#define G_BEGIN_DECLS  extern "C" {

#define G_END_DECLS    }

#else

#define G_BEGIN_DECLS

#define G_END_DECLS

#endif

/* Provide definitions for some commonly used macros.

 *  Some of them are only provided if they haven't already

 *  been defined. It is assumed that if they are already

 *  defined then the current definition is correct.

 */

#ifndef NULL

#  if G_CXX_STD_CHECK_VERSION (11)

#    define NULL (nullptr)

#  elif defined (G_CXX_STD_VERSION)

#    define NULL (0L)

#  else

#    define NULL ((void*) 0)

#  endif /* G_CXX_STD_CHECK_VERSION (11) */

#endif

#ifndef FALSE

#define FALSE (0)

#endif

#ifndef TRUE

#define TRUE  (!FALSE)

#endif

#undef  MAX

#define MAX(a, b)  (((a) > (b)) ? (a) : (b))

#undef  MIN

#define MIN(a, b)  (((a) < (b)) ? (a) : (b))

#undef  ABS

#define ABS(a)     (((a) < 0) ? -(a) : (a))

#undef  CLAMP

#define CLAMP(x, low, high)  (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))

#define G_APPROX_VALUE(a, b, epsilon) \

  (((a) > (b) ? (a) - (b) : (b) - (a)) < (epsilon))

/* Count the number of elements in an array. The array must be defined

 * as such; using this with a dynamically allocated array will give

 * incorrect results.

 */

#define G_N_ELEMENTS(arr)   (sizeof (arr) / sizeof ((arr)[0]))

/* Macros by analogy to GINT_TO_POINTER, GPOINTER_TO_INT

 */

#define GPOINTER_TO_SIZE(p) ((gsize) (p))

#define GSIZE_TO_POINTER(s) ((gpointer) (guintptr) (gsize) (s))

/* Provide convenience macros for handling structure

 * fields through their offsets.

 */

#if G_GNUC_CHECK_VERSION(4, 0) || defined(_MSC_VER)

#define G_STRUCT_OFFSET(struct_type, member) \

      ((glong) offsetof (struct_type, member))

#else

#define G_STRUCT_OFFSET(struct_type, member)  \

      ((glong) ((guint8*) &((struct_type*) 0)->member))

#endif

#define G_STRUCT_MEMBER_P(struct_p, struct_offset)   \

    ((gpointer) ((guint8*) (struct_p) + (glong) (struct_offset)))

#define G_STRUCT_MEMBER(member_type, struct_p, struct_offset)   \

    (*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset)))

/* Provide simple macro statement wrappers:

 *   G_STMT_START { statements; } G_STMT_END;

 * This can be used as a single statement, like:

 *   if (x) G_STMT_START { ... } G_STMT_END; else ...

 * This intentionally does not use compiler extensions like GCC's '({...})' to

 * avoid portability issue or side effects when compiled with different compilers.

 * MSVC complains about "while(0)": C4127: "Conditional expression is constant",

 * so we use __pragma to avoid the warning since the use here is intentional.

 */

#if !(defined (G_STMT_START) && defined (G_STMT_END))

#define G_STMT_START  do

#if defined (_MSC_VER) && (_MSC_VER >= 1500)

#define G_STMT_END \

    __pragma(warning(push)) \

    __pragma(warning(disable:4127)) \

    while(0) \

    __pragma(warning(pop))

#else

#define G_STMT_END    while (0)

#endif

#endif

/* Provide G_ALIGNOF alignment macro.

 *

 * Note we cannot use the gcc __alignof__ operator here, as that returns the

 * preferred alignment rather than the minimal alignment. See

 * https://gitlab.gnome.org/GNOME/glib/merge_requests/538/diffs#note_390790.

 */

/**

 * G_ALIGNOF

 * @type: a type-name

 *

 * Return the minimal alignment required by the platform ABI for values of the given

 * type. The address of a variable or struct member of the given type must always be

 * a multiple of this alignment. For example, most platforms require int variables

 * to be aligned at a 4-byte boundary, so `G_ALIGNOF (int)` is 4 on most platforms.

 *

 * Note this is not necessarily the same as the value returned by GCC’s

 * `__alignof__` operator, which returns the preferred alignment for a type.

 * The preferred alignment may be a stricter alignment than the minimal

 * alignment.

 *

 * Since: 2.60

 */

#if G_C_STD_CHECK_VERSION (11)

#define G_ALIGNOF(type) _Alignof (type) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#else

#define G_ALIGNOF(type) (G_STRUCT_OFFSET (struct { char a; type b; }, b)) \

  GLIB_AVAILABLE_MACRO_IN_2_60

#endif

/**

 * G_CONST_RETURN:

 *

 * If %G_DISABLE_CONST_RETURNS is defined, this macro expands

 * to nothing. By default, the macro expands to const. The macro

 * can be used in place of const for functions that return a value

 * that should not be modified. The purpose of this macro is to allow

 * us to turn on const for returned constant strings by default, while

 * allowing programmers who find that annoying to turn it off. This macro

 * should only be used for return values and for "out" parameters, it

 * doesn't make sense for "in" parameters.

 *

 * Deprecated: 2.30: API providers should replace all existing uses with

 * const and API consumers should adjust their code accordingly

 */

#ifdef G_DISABLE_CONST_RETURNS

#define G_CONST_RETURN GLIB_DEPRECATED_MACRO_IN_2_30_FOR(const)

#else

#define G_CONST_RETURN const GLIB_DEPRECATED_MACRO_IN_2_30_FOR(const)

#endif

/**

 * G_NORETURN:

 *

 * Expands to the GNU C or MSVC `noreturn` function attribute depending on

 * the compiler. It is used for declaring functions which never return.

 * Enables optimization of the function, and avoids possible compiler warnings.

 *

 * Note that %G_NORETURN supersedes the previous %G_GNUC_NORETURN macro, which

 * will eventually be deprecated. %G_NORETURN supports more platforms.

 *

 * Place the attribute before the function declaration as follows:

 *

 * |[<!-- language="C" -->

 * G_NORETURN void g_abort (void);

 * ]|

 *

 * Since: 2.68

 */

/* Note: We can’t annotate this with GLIB_AVAILABLE_MACRO_IN_2_68 because it’s

 * used within the GLib headers in function declarations which are always

 * evaluated when a header is included. This results in warnings in third party

 * code which includes glib.h, even if the third party code doesn’t use the new

 * macro itself. */

#if G_CXX_STD_CHECK_VERSION (11)

  /* Use ISO C++11 syntax when the compiler supports it.  */

# define G_NORETURN [[noreturn]]

#elif g_macro__has_attribute(__noreturn__)

  /* For compatibility with G_NORETURN_FUNCPTR on clang, use

     __attribute__((__noreturn__)), not _Noreturn.  */

# define G_NORETURN __attribute__ ((__noreturn__))

#elif defined (_MSC_VER) && (1200 <= _MSC_VER)

  /* Use MSVC specific syntax.  */

# define G_NORETURN __declspec (noreturn)

  /* Use ISO C11 syntax when the compiler supports it.  */

#elif G_C_STD_CHECK_VERSION (11)

# define G_NORETURN _Noreturn

#else

# define G_NORETURN /* empty */

#endif

/**

 * G_NORETURN_FUNCPTR:

 *

 * Expands to the GNU C or MSVC `noreturn` function attribute depending on

 * the compiler. It is used for declaring function pointers which never return.

 * Enables optimization of the function, and avoids possible compiler warnings.

 *

 * Place the attribute before the function declaration as follows:

 *

 * |[<!-- language="C" -->

 * G_NORETURN_FUNCPTR void (*funcptr) (void);

 * ]|

 *

 * Note that if the function is not a function pointer, you can simply use

 * the %G_NORETURN macro as follows:

 *

 * |[<!-- language="C" -->

 * G_NORETURN void g_abort (void);

 * ]|

 *

 * Since: 2.68

 */

#if g_macro__has_attribute(__noreturn__)

# define G_NORETURN_FUNCPTR __attribute__ ((__noreturn__))      \

  GLIB_AVAILABLE_MACRO_IN_2_68

#else

# define G_NORETURN_FUNCPTR /* empty */         \

  GLIB_AVAILABLE_MACRO_IN_2_68

#endif

/**

 * G_ALWAYS_INLINE:

 *

 * Expands to the GNU C `always_inline` or MSVC `__forceinline` function

 * attribute depending on the compiler. It is used for declaring functions

 * as always inlined, ignoring the compiler optimization levels.

 *

 * The attribute may be placed before the declaration or definition,

 * right before the `static` keyword.

 *

 * |[<!-- language="C" -->

 * G_ALWAYS_INLINE

 * static int

 * do_inline_this (void)

 * {

 *   ...

 * }

 * ]|

 *

 * See the

 * [GNU C documentation](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-always_005finline-function-attribute)

 * and the