* and/or from other macros that are predefined by the compiler
* or defined in standard (POSIX or platform or compiler) headers.
*
- * As a temporary workaround, you can add an explicit <code>#define</code> for some macros
+ * As a temporary workaround, you can add an explicit \#define for some macros
* before it is first tested, or add an equivalent -D macro definition
* to the compiler's command line.
*
#define U_PF_BROWSER_NATIVE_CLIENT 4020
/** Android is based on Linux. @internal */
#define U_PF_ANDROID 4050
+/** Fuchsia is a POSIX-ish platform. @internal */
+#define U_PF_FUCHSIA 4100
/* Maximum value for Linux-based platform is 4499 */
+/**
+ * Emscripten is a C++ transpiler for the Web that can target asm.js or
+ * WebAssembly. It provides some POSIX-compatible wrappers and stubs and
+ * some Linux-like functionality, but is not fully compatible with
+ * either.
+ * @internal
+ */
+#define U_PF_EMSCRIPTEN 5010
/** z/OS is the successor to OS/390 which was the successor to MVS. @internal */
#define U_PF_OS390 9000
/** "IBM i" is the current name of what used to be i5/OS and earlier OS/400. @internal */
# include <android/api-level.h>
#elif defined(__pnacl__) || defined(__native_client__)
# define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT
+#elif defined(__Fuchsia__)
+# define U_PLATFORM U_PF_FUCHSIA
#elif defined(linux) || defined(__linux__) || defined(__linux)
# define U_PLATFORM U_PF_LINUX
#elif defined(__APPLE__) && defined(__MACH__)
# define U_PLATFORM U_PF_OS390
#elif defined(__OS400__) || defined(__TOS_OS400__)
# define U_PLATFORM U_PF_OS400
+#elif defined(__EMSCRIPTEN__)
+# define U_PLATFORM U_PF_EMSCRIPTEN
#else
# define U_PLATFORM U_PF_UNKNOWN
#endif
# define CYGWINMSVC
#endif
*/
+#ifdef U_IN_DOXYGEN
+# define CYGWINMSVC
+#endif
/**
* \def U_PLATFORM_USES_ONLY_WIN32_API
# define U_HAVE_INTTYPES_H U_HAVE_STDINT_H
#endif
-/**
- * \def U_IOSTREAM_SOURCE
- * Defines what support for C++ streams is available.
- *
- * If U_IOSTREAM_SOURCE is set to 199711, then <iostream> is available
- * (the ISO/IEC C++ FDIS was published in November 1997), and then
- * one should qualify streams using the std namespace in ICU header
- * files.
- * Starting with ICU 49, this is the only supported version.
- *
- * If U_IOSTREAM_SOURCE is set to 198506, then <iostream.h> is
- * available instead (in June 1985 Stroustrup published
- * "An Extensible I/O Facility for C++" at the summer USENIX conference).
- * Starting with ICU 49, this version is not supported any more.
- *
- * If U_IOSTREAM_SOURCE is 0 (or any value less than 199711),
- * then C++ streams are not available and
- * support for them will be silently suppressed in ICU.
- *
- * @internal
- */
-#ifndef U_IOSTREAM_SOURCE
-#define U_IOSTREAM_SOURCE 199711
-#endif
-
/*===========================================================================*/
/** @{ Compiler and environment features */
/*===========================================================================*/
#endif
/* Compatibility with compilers other than clang: http://clang.llvm.org/docs/LanguageExtensions.html */
-#ifndef __has_attribute
-# define __has_attribute(x) 0
+#ifdef __has_attribute
+# define UPRV_HAS_ATTRIBUTE(x) __has_attribute(x)
+#else
+# define UPRV_HAS_ATTRIBUTE(x) 0
#endif
-#ifndef __has_cpp_attribute
-# define __has_cpp_attribute(x) 0
+#ifdef __has_cpp_attribute
+# define UPRV_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
+#else
+# define UPRV_HAS_CPP_ATTRIBUTE(x) 0
#endif
-#ifndef __has_builtin
-# define __has_builtin(x) 0
+#ifdef __has_declspec_attribute
+# define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x)
+#else
+# define UPRV_HAS_DECLSPEC_ATTRIBUTE(x) 0
#endif
-#ifndef __has_feature
-# define __has_feature(x) 0
+#ifdef __has_builtin
+# define UPRV_HAS_BUILTIN(x) __has_builtin(x)
+#else
+# define UPRV_HAS_BUILTIN(x) 0
#endif
-#ifndef __has_extension
-# define __has_extension(x) 0
+#ifdef __has_feature
+# define UPRV_HAS_FEATURE(x) __has_feature(x)
+#else
+# define UPRV_HAS_FEATURE(x) 0
#endif
-#ifndef __has_warning
-# define __has_warning(x) 0
+#ifdef __has_extension
+# define UPRV_HAS_EXTENSION(x) __has_extension(x)
+#else
+# define UPRV_HAS_EXTENSION(x) 0
+#endif
+#ifdef __has_warning
+# define UPRV_HAS_WARNING(x) __has_warning(x)
+#else
+# define UPRV_HAS_WARNING(x) 0
#endif
/**
* Attribute to specify the size of the allocated buffer for malloc-like functions
* @internal
*/
-#if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || __has_attribute(alloc_size)
+#if (defined(__GNUC__) && \
+ (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) || \
+ UPRV_HAS_ATTRIBUTE(alloc_size)
# define U_ALLOC_SIZE_ATTR(X) __attribute__ ((alloc_size(X)))
# define U_ALLOC_SIZE_ATTR2(X,Y) __attribute__ ((alloc_size(X,Y)))
#else
/* Otherwise use the predefined value. */
#elif !defined(__cplusplus)
# define U_CPLUSPLUS_VERSION 0
-#elif __cplusplus >= 201402L
+#elif __cplusplus >= 201402L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
# define U_CPLUSPLUS_VERSION 14
-#elif __cplusplus >= 201103L
+#elif __cplusplus >= 201103L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201103L)
# define U_CPLUSPLUS_VERSION 11
#else
// C++98 or C++03
};
#endif
-/**
- * \def U_HAVE_RVALUE_REFERENCES
- * Set to 1 if the compiler supports rvalue references.
- * C++11 feature, necessary for move constructor & move assignment.
- * @internal
- */
-#ifdef U_HAVE_RVALUE_REFERENCES
- /* Use the predefined value. */
-#elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_rvalue_references) \
- || defined(__GXX_EXPERIMENTAL_CXX0X__) \
- || (defined(_MSC_VER) && _MSC_VER >= 1600) /* Visual Studio 2010 */
-# define U_HAVE_RVALUE_REFERENCES 1
-#else
-# define U_HAVE_RVALUE_REFERENCES 0
-#endif
-
/**
* \def U_NOEXCEPT
* "noexcept" if supported, otherwise empty.
*/
#ifdef U_NOEXCEPT
/* Use the predefined value. */
-#elif defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS /* Visual Studio */
-# define U_NOEXCEPT
-#elif U_CPLUSPLUS_VERSION >= 11 || __has_feature(cxx_noexcept) || __has_extension(cxx_noexcept) \
- || (defined(_MSC_VER) && _MSC_VER >= 1900) /* Visual Studio 2015 */
-# define U_NOEXCEPT noexcept
#else
-# define U_NOEXCEPT
+# define U_NOEXCEPT noexcept
#endif
/**
#elif defined(__clang__)
// Test for compiler vs. feature separately.
// Other compilers might choke on the feature test.
-# if __has_cpp_attribute(clang::fallthrough) || \
- (__has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough"))
+# if UPRV_HAS_CPP_ATTRIBUTE(clang::fallthrough) || \
+ (UPRV_HAS_FEATURE(cxx_attributes) && \
+ UPRV_HAS_WARNING("-Wimplicit-fallthrough"))
# define U_FALLTHROUGH [[clang::fallthrough]]
# endif
+#elif defined(__GNUC__) && (__GNUC__ >= 7)
+# define U_FALLTHROUGH __attribute__((fallthrough))
#endif
#ifndef U_FALLTHROUGH
*/
#ifdef U_CHARSET_IS_UTF8
/* Use the predefined value. */
-#elif U_PLATFORM == U_PF_ANDROID || U_PLATFORM_IS_DARWIN_BASED
+#elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \
+ U_PLATFORM == U_PF_EMSCRIPTEN
# define U_CHARSET_IS_UTF8 1
#else
# define U_CHARSET_IS_UTF8 0
* narrow-character strings are in EBCDIC.
*/
# define U_SIZEOF_WCHAR_T 2
-#else
+# else
/*
* LOCALETYPE(*CLD) or LOCALETYPE(*LOCALE) is specified.
* Wide-character strings are in 16-bit EBCDIC,
#else
/*
* Notes:
- * Visual Studio 10 (_MSC_VER>=1600) defines char16_t but
- * does not support u"abc" string literals.
+ * Visual Studio 2010 (_MSC_VER==1600) defines char16_t as a typedef
+ * and does not support u"abc" string literals.
+ * Visual Studio 2015 (_MSC_VER>=1900) and above adds support for
+ * both char16_t and u"abc" string literals.
* gcc 4.4 defines the __CHAR16_TYPE__ macro to a usable type but
* does not support u"abc" string literals.
* C++11 and C11 require support for UTF-16 literals
#elif U_HAVE_CHAR16_T \
|| (defined(__xlC__) && defined(__IBM_UTF_LITERAL) && U_SIZEOF_WCHAR_T != 2) \
|| (defined(__HP_aCC) && __HP_aCC >= 035000) \
- || (defined(__HP_cc) && __HP_cc >= 111106)
+ || (defined(__HP_cc) && __HP_cc >= 111106) \
+ || (defined(U_IN_DOXYGEN))
# define U_DECLARE_UTF16(string) u ## string
#elif U_SIZEOF_WCHAR_T == 2 \
&& (U_CHARSET_FAMILY == 0 || (U_PF_OS390 <= U_PLATFORM && U_PLATFORM <= U_PF_OS400 && defined(__UCS2__)))
/* Use the predefined value. */
#elif defined(U_STATIC_IMPLEMENTATION)
# define U_EXPORT
+#elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \
+ UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport))
+# define U_EXPORT __declspec(dllexport)
#elif defined(__GNUC__)
# define U_EXPORT __attribute__((visibility("default")))
#elif (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x550) \
# define U_EXPORT __global
/*#elif defined(__HP_aCC) || defined(__HP_cc)
# define U_EXPORT __declspec(dllexport)*/
-#elif defined(_MSC_VER)
-# define U_EXPORT __declspec(dllexport)
#else
# define U_EXPORT
#endif
#ifdef U_IMPORT
/* Use the predefined value. */
-#elif defined(_MSC_VER)
+#elif defined(_MSC_VER) || (UPRV_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \
+ UPRV_HAS_DECLSPEC_ATTRIBUTE(dllimport))
/* Windows needs to export/import data. */
# define U_IMPORT __declspec(dllimport)
#else
# define U_CALLCONV U_EXPORT2
#endif
+/**
+ * \def U_CALLCONV_FPTR
+ * Similar to U_CALLCONV, but only used on function pointers.
+ * @internal
+ */
+#if U_PLATFORM == U_PF_OS390 && defined(__cplusplus)
+# define U_CALLCONV_FPTR U_CALLCONV
+#else
+# define U_CALLCONV_FPTR
+#endif
/* @} */
-#endif
+#endif // _PLATFORM_H
projects / apple / icu.git / blobdiff