mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2024-10-07 10:54:01 +00:00
f4ac884f2b
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 llvm-svn: 233275
65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
// -*- C++ -*-
|
|
//===--------------------------- iostream ---------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP_IOSTREAM
|
|
#define _LIBCPP_IOSTREAM
|
|
|
|
/*
|
|
iostream synopsis
|
|
|
|
#include <ios>
|
|
#include <streambuf>
|
|
#include <istream>
|
|
#include <ostream>
|
|
|
|
namespace std {
|
|
|
|
extern istream cin;
|
|
extern ostream cout;
|
|
extern ostream cerr;
|
|
extern ostream clog;
|
|
extern wistream wcin;
|
|
extern wostream wcout;
|
|
extern wostream wcerr;
|
|
extern wostream wclog;
|
|
|
|
} // std
|
|
|
|
*/
|
|
|
|
#include <__config>
|
|
#include <ios>
|
|
#include <streambuf>
|
|
#include <istream>
|
|
#include <ostream>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
#pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
#ifndef _LIBCPP_HAS_NO_STDIN
|
|
extern _LIBCPP_FUNC_VIS istream cin;
|
|
extern _LIBCPP_FUNC_VIS wistream wcin;
|
|
#endif
|
|
#ifndef _LIBCPP_HAS_NO_STDOUT
|
|
extern _LIBCPP_FUNC_VIS ostream cout;
|
|
extern _LIBCPP_FUNC_VIS wostream wcout;
|
|
#endif
|
|
extern _LIBCPP_FUNC_VIS ostream cerr;
|
|
extern _LIBCPP_FUNC_VIS wostream wcerr;
|
|
extern _LIBCPP_FUNC_VIS ostream clog;
|
|
extern _LIBCPP_FUNC_VIS wostream wclog;
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_IOSTREAM
|