chromium/third_party/libc++/src/include/strstream

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_STRSTREAM
#define _LIBCPP_STRSTREAM

/*
    strstream synopsis

class strstreambuf                                    // Removed in C++26
    : public basic_streambuf<char>
{
public:
    explicit strstreambuf(streamsize alsize_arg = 0); // before C++20
    strstreambuf() : strstreambuf(0) {}               // C++20
    explicit strstreambuf(streamsize alsize_arg);     // C++20

    strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*));
    strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = nullptr);
    strstreambuf(const char* gnext_arg, streamsize n);

    strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = nullptr);
    strstreambuf(const signed char* gnext_arg, streamsize n);
    strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = nullptr);
    strstreambuf(const unsigned char* gnext_arg, streamsize n);

    strstreambuf(strstreambuf&& rhs);
    strstreambuf& operator=(strstreambuf&& rhs);

    virtual ~strstreambuf();

    void swap(strstreambuf& rhs);

    void freeze(bool freezefl = true);
    char* str();
    int pcount() const;

protected:
    virtual int_type overflow (int_type c = EOF);
    virtual int_type pbackfail(int_type c = EOF);
    virtual int_type underflow();
    virtual pos_type seekoff(off_type off, ios_base::seekdir way,
                             ios_base::openmode which = ios_base::in | ios_base::out);
    virtual pos_type seekpos(pos_type sp,
                             ios_base::openmode which = ios_base::in | ios_base::out);
    virtual streambuf* setbuf(char* s, streamsize n);

private:
    typedef T1 strstate;                // exposition only
    static const strstate allocated;    // exposition only
    static const strstate constant;     // exposition only
    static const strstate dynamic;      // exposition only
    static const strstate frozen;       // exposition only
    strstate strmode;                   // exposition only
    streamsize alsize;                  // exposition only
    void* (*palloc)(size_t);            // exposition only
    void (*pfree)(void*);               // exposition only
};

class istrstream                                      // Removed in C++26
    : public basic_istream<char>
{
public:
    explicit istrstream(const char* s);
    explicit istrstream(char* s);
    istrstream(const char* s, streamsize n);
    istrstream(char* s, streamsize n);

    virtual ~istrstream();

    strstreambuf* rdbuf() const;
    char *str();

private:
    strstreambuf sb; // exposition only
};

class ostrstream                                      // Removed in C++26
    : public basic_ostream<char>
{
public:
    ostrstream();
    ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out);

    virtual ~ostrstream();

    strstreambuf* rdbuf() const;
    void freeze(bool freezefl = true);
    char* str();
    int pcount() const;

private:
    strstreambuf sb; // exposition only
};

class strstream                                       // Removed in C++26
    : public basic_iostream<char>
{
public:
    // Types
    typedef char                        char_type;
    typedef char_traits<char>::int_type int_type;
    typedef char_traits<char>::pos_type pos_type;
    typedef char_traits<char>::off_type off_type;

    // constructors/destructor
    strstream();
    strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out);

    virtual ~strstream();

    // Members:
    strstreambuf* rdbuf() const;
    void freeze(bool freezefl = true);
    int pcount() const;
    char* str();

private:
    strstreambuf sb; // exposition only
};

}  // std

*/

#include <__config>
#include <istream>
#include <ostream>
#include <version>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

#if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY)

_LIBCPP_PUSH_MACROS
#  include <__undef_macros>

_LIBCPP_BEGIN_NAMESPACE_STD

class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf { … };

#  ifndef _LIBCPP_CXX03_LANG

inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs)
    : … { … }

inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) { … }

#  endif // _LIBCPP_CXX03_LANG

class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream { … };

class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream { … };

class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream { … };

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY)

#endif // _LIBCPP_STRSTREAM