357 lines
11 KiB
C
357 lines
11 KiB
C
/*
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******************************************************************************
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*
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* Copyright (C) 1999-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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* file name: umachine.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 1999sep13
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* created by: Markus W. Scherer
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*
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* This file defines basic types and constants for ICU to be
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* platform-independent. umachine.h and utf.h are included into
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* utypes.h to provide all the general definitions for ICU.
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* All of these definitions used to be in utypes.h before
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* the UTF-handling macros made this unmaintainable.
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*/
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#ifndef __UMACHINE_H__
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#define __UMACHINE_H__
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/**
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* \file
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* \brief Basic types and constants for UTF
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*
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* <h2> Basic types and constants for UTF </h2>
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* This file defines basic types and constants for utf.h to be
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* platform-independent. umachine.h and utf.h are included into
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* utypes.h to provide all the general definitions for ICU.
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* All of these definitions used to be in utypes.h before
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* the UTF-handling macros made this unmaintainable.
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*
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*/
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/*==========================================================================*/
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/* Include platform-dependent definitions */
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/* which are contained in the platform-specific file platform.h */
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/*==========================================================================*/
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#include "unicode/ptypes.h" /* platform.h is included in ptypes.h */
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/*
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* ANSI C headers:
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* stddef.h defines wchar_t
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*/
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#include <stddef.h>
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/*==========================================================================*/
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/* For C wrappers, we use the symbol U_STABLE. */
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/* This works properly if the includer is C or C++. */
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/* Functions are declared U_STABLE return-type U_EXPORT2 function-name()... */
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/*==========================================================================*/
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/**
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* \def U_CFUNC
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* This is used in a declaration of a library private ICU C function.
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* @stable ICU 2.4
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*/
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/**
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* \def U_CDECL_BEGIN
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* This is used to begin a declaration of a library private ICU C API.
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* @stable ICU 2.4
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*/
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/**
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* \def U_CDECL_END
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* This is used to end a declaration of a library private ICU C API
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* @stable ICU 2.4
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*/
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#ifdef __cplusplus
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# define U_CFUNC extern "C"
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# define U_CDECL_BEGIN extern "C" {
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# define U_CDECL_END }
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#else
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# define U_CFUNC extern
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# define U_CDECL_BEGIN
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# define U_CDECL_END
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#endif
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#ifndef U_ATTRIBUTE_DEPRECATED
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/**
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* \def U_ATTRIBUTE_DEPRECATED
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* This is used for GCC specific attributes
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* @internal
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*/
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#if U_GCC_MAJOR_MINOR >= 302
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# define U_ATTRIBUTE_DEPRECATED __attribute__ ((deprecated))
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/**
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* \def U_ATTRIBUTE_DEPRECATED
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* This is used for Visual C++ specific attributes
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* @internal
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*/
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#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
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# define U_ATTRIBUTE_DEPRECATED __declspec(deprecated)
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#else
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# define U_ATTRIBUTE_DEPRECATED
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#endif
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#endif
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/** This is used to declare a function as a public ICU C API @stable ICU 2.0*/
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#define U_CAPI U_CFUNC U_EXPORT
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/** This is used to declare a function as a stable public ICU C API*/
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#define U_STABLE U_CAPI
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/** This is used to declare a function as a draft public ICU C API */
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#define U_DRAFT U_CAPI
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/** This is used to declare a function as a deprecated public ICU C API */
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#define U_DEPRECATED U_CAPI U_ATTRIBUTE_DEPRECATED
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/** This is used to declare a function as an obsolete public ICU C API */
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#define U_OBSOLETE U_CAPI
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/** This is used to declare a function as an internal ICU C API */
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#define U_INTERNAL U_CAPI
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/**
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* \def U_OVERRIDE
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* Defined to the C++11 "override" keyword if available.
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* Denotes a class or member which is an override of the base class.
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* May result in an error if it applied to something not an override.
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* @internal
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*/
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/**
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* \def U_FINAL
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* Defined to the C++11 "final" keyword if available.
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* Denotes a class or member which may not be overridden in subclasses.
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* May result in an error if subclasses attempt to override.
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* @internal
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*/
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#if defined(__cplusplus) && __cplusplus>=201103L
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/* C++11 */
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#ifndef U_OVERRIDE
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#define U_OVERRIDE override
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#endif
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#ifndef U_FINAL
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#define U_FINAL final
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#endif
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#else
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/* not C++11 - define to nothing */
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#ifndef U_OVERRIDE
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#define U_OVERRIDE
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#endif
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#ifndef U_FINAL
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#define U_FINAL
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#endif
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#endif
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/*==========================================================================*/
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/* limits for int32_t etc., like in POSIX inttypes.h */
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/*==========================================================================*/
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#ifndef INT8_MIN
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/** The smallest value an 8 bit signed integer can hold @stable ICU 2.0 */
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# define INT8_MIN ((int8_t)(-128))
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#endif
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#ifndef INT16_MIN
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/** The smallest value a 16 bit signed integer can hold @stable ICU 2.0 */
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# define INT16_MIN ((int16_t)(-32767-1))
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#endif
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#ifndef INT32_MIN
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/** The smallest value a 32 bit signed integer can hold @stable ICU 2.0 */
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# define INT32_MIN ((int32_t)(-2147483647-1))
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#endif
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#ifndef INT8_MAX
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/** The largest value an 8 bit signed integer can hold @stable ICU 2.0 */
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# define INT8_MAX ((int8_t)(127))
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#endif
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#ifndef INT16_MAX
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/** The largest value a 16 bit signed integer can hold @stable ICU 2.0 */
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# define INT16_MAX ((int16_t)(32767))
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#endif
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#ifndef INT32_MAX
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/** The largest value a 32 bit signed integer can hold @stable ICU 2.0 */
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# define INT32_MAX ((int32_t)(2147483647))
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#endif
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#ifndef UINT8_MAX
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/** The largest value an 8 bit unsigned integer can hold @stable ICU 2.0 */
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# define UINT8_MAX ((uint8_t)(255U))
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#endif
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#ifndef UINT16_MAX
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/** The largest value a 16 bit unsigned integer can hold @stable ICU 2.0 */
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# define UINT16_MAX ((uint16_t)(65535U))
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#endif
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#ifndef UINT32_MAX
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/** The largest value a 32 bit unsigned integer can hold @stable ICU 2.0 */
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# define UINT32_MAX ((uint32_t)(4294967295U))
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#endif
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#if defined(U_INT64_T_UNAVAILABLE)
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# error int64_t is required for decimal format and rule-based number format.
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#else
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# ifndef INT64_C
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/**
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* Provides a platform independent way to specify a signed 64-bit integer constant.
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* note: may be wrong for some 64 bit platforms - ensure your compiler provides INT64_C
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* @stable ICU 2.8
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*/
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# define INT64_C(c) c ## LL
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# endif
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# ifndef UINT64_C
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/**
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* Provides a platform independent way to specify an unsigned 64-bit integer constant.
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* note: may be wrong for some 64 bit platforms - ensure your compiler provides UINT64_C
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* @stable ICU 2.8
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*/
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# define UINT64_C(c) c ## ULL
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# endif
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# ifndef U_INT64_MIN
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/** The smallest value a 64 bit signed integer can hold @stable ICU 2.8 */
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# define U_INT64_MIN ((int64_t)(INT64_C(-9223372036854775807)-1))
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# endif
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# ifndef U_INT64_MAX
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/** The largest value a 64 bit signed integer can hold @stable ICU 2.8 */
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# define U_INT64_MAX ((int64_t)(INT64_C(9223372036854775807)))
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# endif
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# ifndef U_UINT64_MAX
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/** The largest value a 64 bit unsigned integer can hold @stable ICU 2.8 */
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# define U_UINT64_MAX ((uint64_t)(UINT64_C(18446744073709551615)))
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# endif
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#endif
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/*==========================================================================*/
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/* Boolean data type */
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/*==========================================================================*/
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/** The ICU boolean type @stable ICU 2.0 */
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typedef int8_t UBool;
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#ifndef TRUE
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/** The TRUE value of a UBool @stable ICU 2.0 */
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# define TRUE 1
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#endif
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#ifndef FALSE
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/** The FALSE value of a UBool @stable ICU 2.0 */
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# define FALSE 0
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#endif
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/*==========================================================================*/
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/* Unicode data types */
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/*==========================================================================*/
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/* wchar_t-related definitions -------------------------------------------- */
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/*
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* \def U_WCHAR_IS_UTF16
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* Defined if wchar_t uses UTF-16.
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*
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* @stable ICU 2.0
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*/
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/*
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* \def U_WCHAR_IS_UTF32
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* Defined if wchar_t uses UTF-32.
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*
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* @stable ICU 2.0
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*/
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#if !defined(U_WCHAR_IS_UTF16) && !defined(U_WCHAR_IS_UTF32)
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# ifdef __STDC_ISO_10646__
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# if (U_SIZEOF_WCHAR_T==2)
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# define U_WCHAR_IS_UTF16
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# elif (U_SIZEOF_WCHAR_T==4)
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# define U_WCHAR_IS_UTF32
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# endif
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# elif defined __UCS2__
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# if (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400) && (U_SIZEOF_WCHAR_T==2)
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# define U_WCHAR_IS_UTF16
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# endif
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# elif defined(__UCS4__) || (U_PLATFORM == U_PF_OS400 && defined(__UTF32__))
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# if (U_SIZEOF_WCHAR_T==4)
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# define U_WCHAR_IS_UTF32
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# endif
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# elif U_PLATFORM_IS_DARWIN_BASED || (U_SIZEOF_WCHAR_T==4 && U_PLATFORM_IS_LINUX_BASED)
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# define U_WCHAR_IS_UTF32
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# elif U_PLATFORM_HAS_WIN32_API
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# define U_WCHAR_IS_UTF16
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# endif
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#endif
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/* UChar and UChar32 definitions -------------------------------------------- */
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/** Number of bytes in a UChar. @stable ICU 2.0 */
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#define U_SIZEOF_UCHAR 2
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/**
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* \var UChar
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* Define UChar to be UCHAR_TYPE, if that is #defined (for example, to char16_t),
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* or wchar_t if that is 16 bits wide; always assumed to be unsigned.
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* If neither is available, then define UChar to be uint16_t.
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*
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* This makes the definition of UChar platform-dependent
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* but allows direct string type compatibility with platforms with
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* 16-bit wchar_t types.
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*
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* @stable ICU 4.4
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*/
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#if defined(UCHAR_TYPE)
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typedef UCHAR_TYPE UChar;
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/* Not #elif U_HAVE_CHAR16_T -- because that is type-incompatible with pre-C++11 callers
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typedef char16_t UChar; */
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#elif U_SIZEOF_WCHAR_T==2
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typedef wchar_t UChar;
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#elif defined(__CHAR16_TYPE__)
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typedef __CHAR16_TYPE__ UChar;
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#else
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typedef uint16_t UChar;
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#endif
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/**
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* Define UChar32 as a type for single Unicode code points.
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* UChar32 is a signed 32-bit integer (same as int32_t).
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*
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* The Unicode code point range is 0..0x10ffff.
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* All other values (negative or >=0x110000) are illegal as Unicode code points.
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* They may be used as sentinel values to indicate "done", "error"
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* or similar non-code point conditions.
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*
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* Before ICU 2.4 (Jitterbug 2146), UChar32 was defined
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* to be wchar_t if that is 32 bits wide (wchar_t may be signed or unsigned)
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* or else to be uint32_t.
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* That is, the definition of UChar32 was platform-dependent.
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*
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* @see U_SENTINEL
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* @stable ICU 2.4
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*/
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typedef int32_t UChar32;
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/**
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* This value is intended for sentinel values for APIs that
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* (take or) return single code points (UChar32).
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* It is outside of the Unicode code point range 0..0x10ffff.
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*
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* For example, a "done" or "error" value in a new API
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* could be indicated with U_SENTINEL.
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*
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* ICU APIs designed before ICU 2.4 usually define service-specific "done"
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* values, mostly 0xffff.
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* Those may need to be distinguished from
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* actual U+ffff text contents by calling functions like
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* CharacterIterator::hasNext() or UnicodeString::length().
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*
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* @return -1
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* @see UChar32
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* @stable ICU 2.4
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*/
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#define U_SENTINEL (-1)
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#include "unicode/urename.h"
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#endif
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