abd06b4c9b
The idea behind Nuxi CloudABI is that it is targeted at (but not limited to) running networked services in a sandboxed environment. The model behind stdin, stdout and stderr is strongly focused on interactive tools in a command shell. CloudABI does not support the notion of stdin and stdout, as 'standard input/output' does not apply to services. The concept of stderr does makes sense though, as services do need some mechanism to log error messages in a uniform way. This patch extends libc++ in such a way that std::cin and std::cout and the associated <cstdio>/<cwchar> functions can be disabled through the flags _LIBCPP_HAS_NO_STDIN and _LIBCPP_HAS_NO_STDOUT, respectively. At the same time it attempts to clean up src/iostream.cpp a bit. Instead of using a single array of mbstate_t objects and hardcoding the array indices, it creates separate objects that declared next to the iostream objects and their buffers. The code is also restructured by interleaving the construction and setup of c* and wc* objects. That way it is more obvious that this is done identically. The c* and wc* objects already have separate unit tests. Make use of this fact by adding XFAILs in case libcpp-has-no-std* is set. That way the tests work in both directions. If stdin or stdout is disabled, these tests will therefore test for the absence of c* and wc*. Differential Revision: http://reviews.llvm.org/D8340 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@233275 91177308-0d34-0410-b5e6-96231b3b80d8
116 lines
6.8 KiB
C++
116 lines
6.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <cwchar>
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#include <cwchar>
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#include <type_traits>
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#ifndef NULL
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#error NULL not defined
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#endif
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#ifndef WCHAR_MAX
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#error WCHAR_MAX not defined
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#endif
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#ifndef WCHAR_MIN
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#error WCHAR_MIN not defined
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#endif
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#ifndef WEOF
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#error WEOF not defined
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#endif
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int main()
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{
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std::mbstate_t mb = {0};
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std::size_t s = 0;
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std::tm *tm = 0;
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std::wint_t w = 0;
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::FILE* fp = 0;
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#ifdef __APPLE__
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__darwin_va_list va;
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#else
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__builtin_va_list va;
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#endif
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char* ns = 0;
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wchar_t* ws = 0;
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static_assert((std::is_same<decltype(std::fwprintf(fp, L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::fwscanf(fp, L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::swprintf(ws, s, L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::swscanf(L"", L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::vfwprintf(fp, L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::vfwscanf(fp, L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::vswprintf(ws, s, L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::vswscanf(L"", L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::fgetwc(fp)), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::fgetws(ws, 0, fp)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::fputwc(L' ', fp)), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::fputws(L"", fp)), int>::value), "");
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static_assert((std::is_same<decltype(std::fwide(fp, 0)), int>::value), "");
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static_assert((std::is_same<decltype(std::getwc(fp)), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::putwc(L' ', fp)), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::ungetwc(L' ', fp)), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::wcstod(L"", (wchar_t**)0)), double>::value), "");
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static_assert((std::is_same<decltype(std::wcstof(L"", (wchar_t**)0)), float>::value), "");
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static_assert((std::is_same<decltype(std::wcstold(L"", (wchar_t**)0)), long double>::value), "");
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static_assert((std::is_same<decltype(std::wcstol(L"", (wchar_t**)0, 0)), long>::value), "");
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static_assert((std::is_same<decltype(std::wcstoll(L"", (wchar_t**)0, 0)), long long>::value), "");
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static_assert((std::is_same<decltype(std::wcstoul(L"", (wchar_t**)0, 0)), unsigned long>::value), "");
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static_assert((std::is_same<decltype(std::wcstoull(L"", (wchar_t**)0, 0)), unsigned long long>::value), "");
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static_assert((std::is_same<decltype(std::wcscpy(ws, L"")), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsncpy(ws, L"", s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcscat(ws, L"")), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsncat(ws, L"", s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcscmp(L"", L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::wcscoll(L"", L"")), int>::value), "");
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static_assert((std::is_same<decltype(std::wcsncmp(L"", L"", s)), int>::value), "");
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static_assert((std::is_same<decltype(std::wcsxfrm(ws, L"", s)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcschr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcschr((wchar_t*)0, L' ')), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcscspn(L"", L"")), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcslen(L"")), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcspbrk((const wchar_t*)0, L"")), const wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcspbrk((wchar_t*)0, L"")), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsrchr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsrchr((wchar_t*)0, L' ')), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsspn(L"", L"")), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcsstr((const wchar_t*)0, L"")), const wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsstr((wchar_t*)0, L"")), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcstok(ws, L"", (wchar_t**)0)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wmemchr((const wchar_t*)0, L' ', s)), const wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wmemchr((wchar_t*)0, L' ', s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wmemcmp(L"", L"", s)), int>::value), "");
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static_assert((std::is_same<decltype(std::wmemcpy(ws, L"", s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wmemmove(ws, L"", s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wmemset(ws, L' ', s)), wchar_t*>::value), "");
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static_assert((std::is_same<decltype(std::wcsftime(ws, s, L"", tm)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::btowc(0)), wint_t>::value), "");
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static_assert((std::is_same<decltype(std::wctob(w)), int>::value), "");
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static_assert((std::is_same<decltype(std::mbsinit(&mb)), int>::value), "");
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static_assert((std::is_same<decltype(std::mbrlen("", s, &mb)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::mbrtowc(ws, "", s, &mb)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcrtomb(ns, L' ', &mb)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::mbsrtowcs(ws, (const char**)0, s, &mb)), std::size_t>::value), "");
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static_assert((std::is_same<decltype(std::wcsrtombs(ns, (const wchar_t**)0, s, &mb)), std::size_t>::value), "");
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#ifndef _LIBCPP_HAS_NO_STDIN
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static_assert((std::is_same<decltype(std::getwchar()), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::vwscanf(L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::wscanf(L"")), int>::value), "");
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#endif
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#ifndef _LIBCPP_HAS_NO_STDOUT
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static_assert((std::is_same<decltype(std::putwchar(L' ')), std::wint_t>::value), "");
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static_assert((std::is_same<decltype(std::vwprintf(L"", va)), int>::value), "");
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static_assert((std::is_same<decltype(std::wprintf(L"")), int>::value), "");
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#endif
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}
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