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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1999-2015, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
* file name: umachine.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 1999sep13
* created by: Markus W. Scherer
*
* This file defines basic types and constants for ICU to be
* platform-independent. umachine.h and utf.h are included into
* utypes.h to provide all the general definitions for ICU.
* All of these definitions used to be in utypes.h before
* the UTF-handling macros made this unmaintainable.
*/
#ifndef __UMACHINE_H__
#define __UMACHINE_H__
/**
* \file
* \brief Basic types and constants for UTF
*
* <h2> Basic types and constants for UTF </h2>
* This file defines basic types and constants for utf.h to be
* platform-independent. umachine.h and utf.h are included into
* utypes.h to provide all the general definitions for ICU.
* All of these definitions used to be in utypes.h before
* the UTF-handling macros made this unmaintainable.
*
*/
/*==========================================================================*/
/* Include platform-dependent definitions */
/* which are contained in the platform-specific file platform.h */
/*==========================================================================*/
#include "unicode/ptypes.h" /* platform.h is included in ptypes.h */
/*
* ANSI C headers:
* stddef.h defines wchar_t
*/
#include <stdbool.h>
#include <stddef.h>
/*==========================================================================*/
/* For C wrappers, we use the symbol U_CAPI. */
/* This works properly if the includer is C or C++. */
/* Functions are declared U_CAPI return-type U_EXPORT2 function-name()... */
/*==========================================================================*/
/**
* \def U_CFUNC
* This is used in a declaration of a library private ICU C function.
* @stable ICU 2.4
*/
/**
* \def U_CDECL_BEGIN
* This is used to begin a declaration of a library private ICU C API.
* @stable ICU 2.4
*/
/**
* \def U_CDECL_END
* This is used to end a declaration of a library private ICU C API
* @stable ICU 2.4
*/
#ifdef __cplusplus
# define U_CFUNC extern "C"
# define U_CDECL_BEGIN extern "C" {
# define U_CDECL_END }
#else
# define U_CFUNC extern
# define U_CDECL_BEGIN
# define U_CDECL_END
#endif
#ifndef U_ATTRIBUTE_DEPRECATED
/**
* \def U_ATTRIBUTE_DEPRECATED
* This is used for GCC specific attributes
* @internal
*/
#if U_GCC_MAJOR_MINOR >= 302
# define U_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
/**
* \def U_ATTRIBUTE_DEPRECATED
* This is used for Visual C++ specific attributes
* @internal
*/
#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
# define U_ATTRIBUTE_DEPRECATED __declspec(deprecated)
#else
# define U_ATTRIBUTE_DEPRECATED
#endif
#endif
/** This is used to declare a function as a public ICU C API @stable ICU 2.0*/
#define U_CAPI U_CFUNC U_EXPORT
/** Obsolete/same as U_CAPI; was used to declare a function as a stable public ICU C API*/
#define U_STABLE U_CAPI
/** Obsolete/same as U_CAPI; was used to declare a function as a draft public ICU C API */
#define U_DRAFT U_CAPI
/** This is used to declare a function as a deprecated public ICU C API */
#define U_DEPRECATED U_CAPI U_ATTRIBUTE_DEPRECATED
/** Obsolete/same as U_CAPI; was used to declare a function as an obsolete public ICU C API */
#define U_OBSOLETE U_CAPI
/** Obsolete/same as U_CAPI; was used to declare a function as an internal ICU C API */
#define U_INTERNAL U_CAPI
// Before ICU 65, function-like, multi-statement ICU macros were just defined as
// series of statements wrapped in { } blocks and the caller could choose to
// either treat them as if they were actual functions and end the invocation
// with a trailing ; creating an empty statement after the block or else omit
// this trailing ; using the knowledge that the macro would expand to { }.
//
// But doing so doesn't work well with macros that look like functions and
// compiler warnings about empty statements (ICU-20601) and ICU 65 therefore
// switches to the standard solution of wrapping such macros in do { } while.
//
// This will however break existing code that depends on being able to invoke
// these macros without a trailing ; so to be able to remain compatible with
// such code the wrapper is itself defined as macros so that it's possible to
// build ICU 65 and later with the old macro behaviour, like this:
//
// export CPPFLAGS='-DUPRV_BLOCK_MACRO_BEGIN="" -DUPRV_BLOCK_MACRO_END=""'
// runConfigureICU ...
//
/**
* \def UPRV_BLOCK_MACRO_BEGIN
* Defined as the "do" keyword by default.
* @internal
*/
#ifndef UPRV_BLOCK_MACRO_BEGIN
#define UPRV_BLOCK_MACRO_BEGIN do
#endif
/**
* \def UPRV_BLOCK_MACRO_END
* Defined as "while (false)" by default.
* @internal
*/
#ifndef UPRV_BLOCK_MACRO_END
#define UPRV_BLOCK_MACRO_END while (false)
#endif
/*==========================================================================*/
/* limits for int32_t etc., like in POSIX inttypes.h */
/*==========================================================================*/
#ifndef INT8_MIN
/** The smallest value an 8 bit signed integer can hold @stable ICU 2.0 */
# define INT8_MIN ((int8_t)(-128))
#endif
#ifndef INT16_MIN
/** The smallest value a 16 bit signed integer can hold @stable ICU 2.0 */
# define INT16_MIN ((int16_t)(-32767-1))
#endif
#ifndef INT32_MIN
/** The smallest value a 32 bit signed integer can hold @stable ICU 2.0 */
# define INT32_MIN ((int32_t)(-2147483647-1))
#endif
#ifndef INT8_MAX
/** The largest value an 8 bit signed integer can hold @stable ICU 2.0 */
# define INT8_MAX ((int8_t)(127))
#endif
#ifndef INT16_MAX
/** The largest value a 16 bit signed integer can hold @stable ICU 2.0 */
# define INT16_MAX ((int16_t)(32767))
#endif
#ifndef INT32_MAX
/** The largest value a 32 bit signed integer can hold @stable ICU 2.0 */
# define INT32_MAX ((int32_t)(2147483647))
#endif
#ifndef UINT8_MAX
/** The largest value an 8 bit unsigned integer can hold @stable ICU 2.0 */
# define UINT8_MAX ((uint8_t)(255U))
#endif
#ifndef UINT16_MAX
/** The largest value a 16 bit unsigned integer can hold @stable ICU 2.0 */
# define UINT16_MAX ((uint16_t)(65535U))
#endif
#ifndef UINT32_MAX
/** The largest value a 32 bit unsigned integer can hold @stable ICU 2.0 */
# define UINT32_MAX ((uint32_t)(4294967295U))
#endif
#if defined(U_INT64_T_UNAVAILABLE)
# error int64_t is required for decimal format and rule-based number format.
#else
# ifndef INT64_C
/**
* Provides a platform independent way to specify a signed 64-bit integer constant.
* note: may be wrong for some 64 bit platforms - ensure your compiler provides INT64_C
* @stable ICU 2.8
*/
# define INT64_C(c) c ## LL
# endif
# ifndef UINT64_C
/**
* Provides a platform independent way to specify an unsigned 64-bit integer constant.
* note: may be wrong for some 64 bit platforms - ensure your compiler provides UINT64_C
* @stable ICU 2.8
*/
# define UINT64_C(c) c ## ULL
# endif
# ifndef U_INT64_MIN
/** The smallest value a 64 bit signed integer can hold @stable ICU 2.8 */
# define U_INT64_MIN ((int64_t)(INT64_C(-9223372036854775807)-1))
# endif
# ifndef U_INT64_MAX
/** The largest value a 64 bit signed integer can hold @stable ICU 2.8 */
# define U_INT64_MAX ((int64_t)(INT64_C(9223372036854775807)))
# endif
# ifndef U_UINT64_MAX
/** The largest value a 64 bit unsigned integer can hold @stable ICU 2.8 */
# define U_UINT64_MAX ((uint64_t)(UINT64_C(18446744073709551615)))
# endif
#endif
/*==========================================================================*/
/* Boolean data type */
/*==========================================================================*/
/**
* The ICU boolean type, a signed-byte integer.
* ICU-specific for historical reasons: The C and C++ standards used to not define type bool.
* Also provides a fixed type definition, as opposed to
* type bool whose details (e.g., sizeof) may vary by compiler and between C and C++.
*
* @stable ICU 2.0
*/
typedef int8_t UBool;
/**
* \def U_DEFINE_FALSE_AND_TRUE
* Normally turns off defining macros FALSE=0 & TRUE=1 in public ICU headers.
* These obsolete macros sometimes break compilation of other code that
* defines enum constants or similar with these names.
* C++ has long defined bool/false/true.
* C99 also added definitions for these, although as macros; see stdbool.h.
*
* You may transitionally define U_DEFINE_FALSE_AND_TRUE=1 if you need time to migrate code.
*
* @internal ICU 68
*/
#ifdef U_DEFINE_FALSE_AND_TRUE
// Use the predefined value.
#else
// Default to avoiding collision with non-macro definitions of FALSE & TRUE.
# define U_DEFINE_FALSE_AND_TRUE 0
#endif
#if U_DEFINE_FALSE_AND_TRUE || defined(U_IN_DOXYGEN)
#ifndef TRUE
/**
* The TRUE value of a UBool.
*
* @deprecated ICU 68 Use standard "true" instead.
*/
# define TRUE 1
#endif
#ifndef FALSE
/**
* The FALSE value of a UBool.
*
* @deprecated ICU 68 Use standard "false" instead.
*/
# define FALSE 0
#endif
#endif // U_DEFINE_FALSE_AND_TRUE
/*==========================================================================*/
/* Unicode data types */
/*==========================================================================*/
/* wchar_t-related definitions -------------------------------------------- */
/*
* \def U_WCHAR_IS_UTF16
* Defined if wchar_t uses UTF-16.
*
* @stable ICU 2.0
*/
/*
* \def U_WCHAR_IS_UTF32
* Defined if wchar_t uses UTF-32.
*
* @stable ICU 2.0
*/
#if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32)
# ifdef __STDC_ISO_10646__
# if (U_SIZEOF_WCHAR_T==2)
# define U_WCHAR_IS_UTF16
# elif (U_SIZEOF_WCHAR_T==4)
# define U_WCHAR_IS_UTF32
# endif
# elif defined __UCS2__
# if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2)
# define U_WCHAR_IS_UTF16
# endif
# elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__))
# if (U_SIZEOF_WCHAR_T==4)
# define U_WCHAR_IS_UTF32
# endif
# elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED)
# define U_WCHAR_IS_UTF32
# elif U_PLATFORM_HAS_WIN32_API
# define U_WCHAR_IS_UTF16
# endif
#endif
/* UChar and UChar32 definitions -------------------------------------------- */
/** Number of bytes in a UChar (always 2). @stable ICU 2.0 */
#define U_SIZEOF_UCHAR 2
/**
* \def U_CHAR16_IS_TYPEDEF
* If 1, then char16_t is a typedef and not a real type (yet)
* @internal
*/
#if defined(_MSC_VER) && (_MSC_VER < 1900)
// Versions of Visual Studio/MSVC below 2015 do not support char16_t as a real type,
// and instead use a typedef. https://msdn.microsoft.com/library/bb531344.aspx
# define U_CHAR16_IS_TYPEDEF 1
#else
# define U_CHAR16_IS_TYPEDEF 0
#endif
/**
* \var UChar
*
* The base type for UTF-16 code units and pointers.
* Unsigned 16-bit integer.
* Starting with ICU 59, C++ API uses char16_t directly, while C API continues to use UChar.
*
* UChar is configurable by defining the macro UCHAR_TYPE
* on the preprocessor or compiler command line:
* -DUCHAR_TYPE=uint16_t or -DUCHAR_TYPE=wchar_t (if U_SIZEOF_WCHAR_T==2) etc.
* (The UCHAR_TYPE can also be \#defined earlier in this file, for outside the ICU library code.)
* This is for transitional use from application code that uses uint16_t or wchar_t for UTF-16.
*
* The default is UChar=char16_t.
*
* C++11 defines char16_t as bit-compatible with uint16_t, but as a distinct type.
*
* In C, char16_t is a simple typedef of uint_least16_t.
* ICU requires uint_least16_t=uint16_t for data memory mapping.
* On macOS, char16_t is not available because the uchar.h standard header is missing.
*
* @stable ICU 4.4
*/
#if 1
// #if 1 is normal. UChar defaults to char16_t in C++.
// For configuration testing of UChar=uint16_t temporarily change this to #if 0.
// The intltest Makefile #defines UCHAR_TYPE=char16_t,
// so we only #define it to uint16_t if it is undefined so far.
#elif !defined(UCHAR_TYPE)
# define UCHAR_TYPE uint16_t
#endif
#if defined(U_COMBINED_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION) || \
defined(U_I18N_IMPLEMENTATION) || defined(U_IO_IMPLEMENTATION)
// Inside the ICU library code, never configurable.
typedef char16_t UChar;
#elif defined(UCHAR_TYPE)
typedef UCHAR_TYPE UChar;
#elif U_CPLUSPLUS_VERSION != 0
typedef char16_t UChar; // C++
#else
typedef uint16_t UChar; // C
#endif
/**
* \var OldUChar
* Default ICU 58 definition of UChar.
* A base type for UTF-16 code units and pointers.
* Unsigned 16-bit integer.
*
* Define OldUChar to be wchar_t if that is 16 bits wide.
* If wchar_t is not 16 bits wide, then define UChar to be uint16_t.
*
* This makes the definition of OldUChar platform-dependent
* but allows direct string type compatibility with platforms with
* 16-bit wchar_t types.
*
* This is how UChar was defined in ICU 58, for transition convenience.
* Exception: ICU 58 UChar was defined to UCHAR_TYPE if that macro was defined.
* The current UChar responds to UCHAR_TYPE but OldUChar does not.
*
* @stable ICU 59
*/
#if U_SIZEOF_WCHAR_T==2
typedef wchar_t OldUChar;
#elif defined(__CHAR16_TYPE__)
typedef __CHAR16_TYPE__ OldUChar;
#else
typedef uint16_t OldUChar;
#endif
/**
* Define UChar32 as a type for single Unicode code points.
* UChar32 is a signed 32-bit integer (same as int32_t).
*
* The Unicode code point range is 0..0x10ffff.
* All other values (negative or >=0x110000) are illegal as Unicode code points.
* They may be used as sentinel values to indicate "done", "error"
* or similar non-code point conditions.
*
* Before ICU 2.4 (Jitterbug 2146), UChar32 was defined
* to be wchar_t if that is 32 bits wide (wchar_t may be signed or unsigned)
* or else to be uint32_t.
* That is, the definition of UChar32 was platform-dependent.
*
* @see U_SENTINEL
* @stable ICU 2.4
*/
typedef int32_t UChar32;
/**
* This value is intended for sentinel values for APIs that
* (take or) return single code points (UChar32).
* It is outside of the Unicode code point range 0..0x10ffff.
*
* For example, a "done" or "error" value in a new API
* could be indicated with U_SENTINEL.
*
* ICU APIs designed before ICU 2.4 usually define service-specific "done"
* values, mostly 0xffff.
* Those may need to be distinguished from
* actual U+ffff text contents by calling functions like
* CharacterIterator::hasNext() or UnicodeString::length().
*
* @return -1
* @see UChar32
* @stable ICU 2.4
*/
#define U_SENTINEL (-1)
#include "unicode/urename.h"
#endif
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