2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_STRSTREAM
11 #define _LIBCPP_STRSTREAM
16 class strstreambuf // Removed in C++26
17 : public basic_streambuf<char>
20 explicit strstreambuf(streamsize alsize_arg = 0); // before C++20
21 strstreambuf() : strstreambuf(0) {} // C++20
22 explicit strstreambuf(streamsize alsize_arg); // C++20
24 strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*));
25 strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = nullptr);
26 strstreambuf(const char* gnext_arg, streamsize n);
28 strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = nullptr);
29 strstreambuf(const signed char* gnext_arg, streamsize n);
30 strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = nullptr);
31 strstreambuf(const unsigned char* gnext_arg, streamsize n);
33 strstreambuf(strstreambuf&& rhs);
34 strstreambuf& operator=(strstreambuf&& rhs);
36 virtual ~strstreambuf();
38 void swap(strstreambuf& rhs);
40 void freeze(bool freezefl = true);
45 virtual int_type overflow (int_type c = EOF);
46 virtual int_type pbackfail(int_type c = EOF);
47 virtual int_type underflow();
48 virtual pos_type seekoff(off_type off, ios_base::seekdir way,
49 ios_base::openmode which = ios_base::in | ios_base::out);
50 virtual pos_type seekpos(pos_type sp,
51 ios_base::openmode which = ios_base::in | ios_base::out);
52 virtual streambuf* setbuf(char* s, streamsize n);
55 typedef T1 strstate; // exposition only
56 static const strstate allocated; // exposition only
57 static const strstate constant; // exposition only
58 static const strstate dynamic; // exposition only
59 static const strstate frozen; // exposition only
60 strstate strmode; // exposition only
61 streamsize alsize; // exposition only
62 void* (*palloc)(size_t); // exposition only
63 void (*pfree)(void*); // exposition only
66 class istrstream // Removed in C++26
67 : public basic_istream<char>
70 explicit istrstream(const char* s);
71 explicit istrstream(char* s);
72 istrstream(const char* s, streamsize n);
73 istrstream(char* s, streamsize n);
75 virtual ~istrstream();
77 strstreambuf* rdbuf() const;
81 strstreambuf sb; // exposition only
84 class ostrstream // Removed in C++26
85 : public basic_ostream<char>
89 ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out);
91 virtual ~ostrstream();
93 strstreambuf* rdbuf() const;
94 void freeze(bool freezefl = true);
99 strstreambuf sb; // exposition only
102 class strstream // Removed in C++26
103 : public basic_iostream<char>
107 typedef char char_type;
108 typedef char_traits<char>::int_type int_type;
109 typedef char_traits<char>::pos_type pos_type;
110 typedef char_traits<char>::off_type off_type;
112 // constructors/destructor
114 strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out);
116 virtual ~strstream();
119 strstreambuf* rdbuf() const;
120 void freeze(bool freezefl = true);
125 strstreambuf sb; // exposition only
133 #include <__ostream/basic_ostream.h>
138 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
139 # pragma GCC system_header
142 #if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY)
145 # include <__undef_macros>
147 _LIBCPP_BEGIN_NAMESPACE_STD
149 class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf {
151 # ifndef _LIBCPP_CXX03_LANG
152 _LIBCPP_HIDE_FROM_ABI strstreambuf() : strstreambuf(0) {}
153 explicit strstreambuf(streamsize __alsize);
155 explicit strstreambuf(streamsize __alsize = 0);
157 strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*));
158 strstreambuf(char* __gnext, streamsize __n, char* __pbeg = nullptr);
159 strstreambuf(const char* __gnext, streamsize __n);
161 strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = nullptr);
162 strstreambuf(const signed char* __gnext, streamsize __n);
163 strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = nullptr);
164 strstreambuf(const unsigned char* __gnext, streamsize __n);
166 # ifndef _LIBCPP_CXX03_LANG
167 _LIBCPP_HIDE_FROM_ABI strstreambuf(strstreambuf&& __rhs);
168 _LIBCPP_HIDE_FROM_ABI strstreambuf& operator=(strstreambuf&& __rhs);
169 # endif // _LIBCPP_CXX03_LANG
171 ~strstreambuf() override;
173 void swap(strstreambuf& __rhs);
175 void freeze(bool __freezefl = true);
180 int_type overflow(int_type __c = EOF) override;
181 int_type pbackfail(int_type __c = EOF) override;
182 int_type underflow() override;
184 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which = ios_base::in | ios_base::out) override;
185 pos_type seekpos(pos_type __sp, ios_base::openmode __which = ios_base::in | ios_base::out) override;
188 typedef unsigned __mode_type;
189 static const __mode_type __allocated = 0x01;
190 static const __mode_type __constant = 0x02;
191 static const __mode_type __dynamic = 0x04;
192 static const __mode_type __frozen = 0x08;
193 static const streamsize __default_alsize = 4096;
195 __mode_type __strmode_;
196 streamsize __alsize_;
197 void* (*__palloc_)(size_t);
198 void (*__pfree_)(void*);
200 void __init(char* __gnext, streamsize __n, char* __pbeg);
203 # ifndef _LIBCPP_CXX03_LANG
205 inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs)
207 __strmode_(__rhs.__strmode_),
208 __alsize_(__rhs.__alsize_),
209 __palloc_(__rhs.__palloc_),
210 __pfree_(__rhs.__pfree_) {
211 __rhs.setg(nullptr, nullptr, nullptr);
212 __rhs.setp(nullptr, nullptr);
215 inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) {
216 if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0) {
222 streambuf::operator=(__rhs);
223 __strmode_ = __rhs.__strmode_;
224 __alsize_ = __rhs.__alsize_;
225 __palloc_ = __rhs.__palloc_;
226 __pfree_ = __rhs.__pfree_;
227 __rhs.setg(nullptr, nullptr, nullptr);
228 __rhs.setp(nullptr, nullptr);
232 # endif // _LIBCPP_CXX03_LANG
234 class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream {
236 _LIBCPP_HIDE_FROM_ABI explicit istrstream(const char* __s) : istream(&__sb_), __sb_(__s, 0) {}
237 _LIBCPP_HIDE_FROM_ABI explicit istrstream(char* __s) : istream(&__sb_), __sb_(__s, 0) {}
238 _LIBCPP_HIDE_FROM_ABI istrstream(const char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {}
239 _LIBCPP_HIDE_FROM_ABI istrstream(char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {}
241 # ifndef _LIBCPP_CXX03_LANG
242 _LIBCPP_HIDE_FROM_ABI istrstream(istrstream&& __rhs) // extension
243 : istream(std::move(static_cast<istream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
244 istream::set_rdbuf(&__sb_);
247 _LIBCPP_HIDE_FROM_ABI istrstream& operator=(istrstream&& __rhs) {
248 __sb_ = std::move(__rhs.__sb_);
249 istream::operator=(std::move(__rhs));
252 # endif // _LIBCPP_CXX03_LANG
254 ~istrstream() override;
256 _LIBCPP_HIDE_FROM_ABI void swap(istrstream& __rhs) {
257 istream::swap(__rhs);
258 __sb_.swap(__rhs.__sb_);
261 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
262 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
268 class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream {
270 _LIBCPP_HIDE_FROM_ABI ostrstream() : ostream(&__sb_) {}
271 _LIBCPP_HIDE_FROM_ABI ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out)
272 : ostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {}
274 # ifndef _LIBCPP_CXX03_LANG
275 _LIBCPP_HIDE_FROM_ABI ostrstream(ostrstream&& __rhs) // extension
276 : ostream(std::move(static_cast<ostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
277 ostream::set_rdbuf(&__sb_);
280 _LIBCPP_HIDE_FROM_ABI ostrstream& operator=(ostrstream&& __rhs) {
281 __sb_ = std::move(__rhs.__sb_);
282 ostream::operator=(std::move(__rhs));
285 # endif // _LIBCPP_CXX03_LANG
287 ~ostrstream() override;
289 _LIBCPP_HIDE_FROM_ABI void swap(ostrstream& __rhs) {
290 ostream::swap(__rhs);
291 __sb_.swap(__rhs.__sb_);
294 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
295 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); }
296 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
297 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); }
300 strstreambuf __sb_; // exposition only
303 class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream {
306 typedef char char_type;
307 typedef char_traits<char>::int_type int_type;
308 typedef char_traits<char>::pos_type pos_type;
309 typedef char_traits<char>::off_type off_type;
311 // constructors/destructor
312 _LIBCPP_HIDE_FROM_ABI strstream() : iostream(&__sb_) {}
313 _LIBCPP_HIDE_FROM_ABI strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out)
314 : iostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {}
316 # ifndef _LIBCPP_CXX03_LANG
317 _LIBCPP_HIDE_FROM_ABI strstream(strstream&& __rhs) // extension
318 : iostream(std::move(static_cast<iostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
319 iostream::set_rdbuf(&__sb_);
322 _LIBCPP_HIDE_FROM_ABI strstream& operator=(strstream&& __rhs) {
323 __sb_ = std::move(__rhs.__sb_);
324 iostream::operator=(std::move(__rhs));
327 # endif // _LIBCPP_CXX03_LANG
329 ~strstream() override;
331 _LIBCPP_HIDE_FROM_ABI void swap(strstream& __rhs) {
332 iostream::swap(__rhs);
333 __sb_.swap(__rhs.__sb_);
337 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
338 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); }
339 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); }
340 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
343 strstreambuf __sb_; // exposition only
346 _LIBCPP_END_NAMESPACE_STD
350 #endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY)
352 #endif // _LIBCPP_STRSTREAM