scuffed-code/icu4c/source/common/unicode/umachine.h
George Rhoten 2edb93853a ICU-2589 Add more documentation.
X-SVN-Rev: 12429
2003-06-10 22:43:42 +00:00

265 lines
8.2 KiB
C

/*
******************************************************************************
*
* Copyright (C) 1999-2002, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
* file name: umachine.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 1999sep13
* created by: Markus W. Scherer
*
* 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.
*/
#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 */
/*==========================================================================*/
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
# include "unicode/pwin32.h"
#elif defined(__OS400__)
# include "unicode/pos400.h"
#elif defined(__MWERKS__)
# include "unicode/pmacos.h"
#else
# include "unicode/platform.h"
#endif
/*==========================================================================*/
/* XP_CPLUSPLUS is a cross-platform symbol which should be defined when */
/* using C++. It should not be defined when compiling under C. */
/*==========================================================================*/
#ifdef __cplusplus
# ifndef XP_CPLUSPLUS
# define XP_CPLUSPLUS
# endif
#else
# undef XP_CPLUSPLUS
#endif
/*==========================================================================*/
/* 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 XP_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
/**
* \def U_NAMESPACE_BEGIN
* This is used to begin a declaration of a public ICU C++ API.
* If the compiler doesn't support namespaces, this does nothing.
* @stable ICU 2.4
*/
/**
* \def U_NAMESPACE_END
* This is used to end a declaration of a public ICU C++ API
* If the compiler doesn't support namespaces, this does nothing.
* @stable ICU 2.4
*/
/**
* \def U_NAMESPACE_USE
* This is used to specify that the rest of the code uses the
* public ICU C++ API namespace.
* If the compiler doesn't support namespaces, this does nothing.
* @stable ICU 2.4
*/
/**
* \def U_NAMESPACE_QUALIFIER
* This is used to qualify that a function or class is part of
* the public ICU C++ API namespace.
* If the compiler doesn't support namespaces, this does nothing.
* @stable ICU 2.4
*/
/* Define namespace symbols if the compiler supports it. */
#if U_HAVE_NAMESPACE
# define U_NAMESPACE_BEGIN namespace U_ICU_NAMESPACE {
# define U_NAMESPACE_END }
# define U_NAMESPACE_USE using namespace U_ICU_NAMESPACE;
# define U_NAMESPACE_QUALIFIER U_ICU_NAMESPACE::
#else
# define U_NAMESPACE_BEGIN
# define U_NAMESPACE_END
# define U_NAMESPACE_USE
# define U_NAMESPACE_QUALIFIER
#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
/*==========================================================================*/
/* 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)
# ifndef INTMAX_MIN
# define INTMAX_MIN INT32_MIN
# endif
# ifndef INTMAX_MAX
# define INTMAX_MAX INT32_MAX
# endif
# ifndef UINTMAX_MAX
# define UINTMAX_MAX UINT32_MAX
# endif
#else
# ifndef INT64_MIN
/** The smallest value a 64 bit signed integer can hold @stable ICU 2.0 */
# define INT64_MIN ((int64_t)(-9223372036854775807-1))
# endif
# ifndef INT64_MAX
/** The largest value a 64 bit signed integer can hold @stable ICU 2.0 */
# define INT64_MAX ((int64_t)(9223372036854775807))
# endif
# ifndef UINT64_MAX
/** The largest value a 64 bit unsigned integer can hold @stable ICU 2.0 */
# define UINT64_MAX ((uint64_t)(18446744073709551615))
# endif
# ifndef INTMAX_MIN
# define INTMAX_MIN INT64_MIN
# endif
# ifndef INTMAX_MAX
# define INTMAX_MAX INT64_MAX
# endif
# ifndef UINTMAX_MAX
# define UINTMAX_MAX UINT64_MAX
# endif
#endif
/*==========================================================================*/
/* Boolean data type */
/*==========================================================================*/
/** The ICU boolean type @stable ICU 2.0 */
typedef int8_t UBool;
#ifndef TRUE
/** The TRUE value of a UBool @stable ICU 2.0 */
# define TRUE 1
#endif
#ifndef FALSE
/** The FALSE value of a UBool @stable ICU 2.0 */
# define FALSE 0
#endif
/*==========================================================================*/
/* U_INLINE and U_ALIGN_CODE Set default values if these are not already */
/* defined. Definitions normally are in */
/* platform.h or the corresponding file for */
/* the OS in use. */
/*==========================================================================*/
/**
* \def U_ALIGN_CODE
* This is used to align code fragments to a specific byte boundary.
* This is useful for getting consistent performance test results.
* @internal
*/
#ifndef U_ALIGN_CODE
# define U_ALIGN_CODE(n)
#endif
#ifndef U_INLINE
# define U_INLINE
#endif
#include "unicode/urename.h"
#endif