LCOV - code coverage report
Current view: top level - include/llvm/Support - raw_ostream.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 54 59 91.5 %
Date: 2018-06-17 00:07:59 Functions: 12 15 80.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===--- raw_ostream.h - Raw output stream ----------------------*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : //  This file defines the raw_ostream class.
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #ifndef LLVM_SUPPORT_RAW_OSTREAM_H
      15             : #define LLVM_SUPPORT_RAW_OSTREAM_H
      16             : 
      17             : #include "llvm/ADT/SmallVector.h"
      18             : #include "llvm/ADT/StringRef.h"
      19             : #include <cassert>
      20             : #include <cstddef>
      21             : #include <cstdint>
      22             : #include <cstring>
      23             : #include <string>
      24             : #include <system_error>
      25             : 
      26             : namespace llvm {
      27             : 
      28             : class formatv_object_base;
      29             : class format_object_base;
      30             : class FormattedString;
      31             : class FormattedNumber;
      32             : class FormattedBytes;
      33             : 
      34             : namespace sys {
      35             : namespace fs {
      36             : enum FileAccess : unsigned;
      37             : enum OpenFlags : unsigned;
      38             : enum CreationDisposition : unsigned;
      39             : } // end namespace fs
      40             : } // end namespace sys
      41             : 
      42             : /// This class implements an extremely fast bulk output stream that can *only*
      43             : /// output to a stream.  It does not support seeking, reopening, rewinding, line
      44             : /// buffered disciplines etc. It is a simple buffer that outputs
      45             : /// a chunk at a time.
      46             : class raw_ostream {
      47             : private:
      48             :   /// The buffer is handled in such a way that the buffer is
      49             :   /// uninitialized, unbuffered, or out of space when OutBufCur >=
      50             :   /// OutBufEnd. Thus a single comparison suffices to determine if we
      51             :   /// need to take the slow path to write a single character.
      52             :   ///
      53             :   /// The buffer is in one of three states:
      54             :   ///  1. Unbuffered (BufferMode == Unbuffered)
      55             :   ///  1. Uninitialized (BufferMode != Unbuffered && OutBufStart == 0).
      56             :   ///  2. Buffered (BufferMode != Unbuffered && OutBufStart != 0 &&
      57             :   ///               OutBufEnd - OutBufStart >= 1).
      58             :   ///
      59             :   /// If buffered, then the raw_ostream owns the buffer if (BufferMode ==
      60             :   /// InternalBuffer); otherwise the buffer has been set via SetBuffer and is
      61             :   /// managed by the subclass.
      62             :   ///
      63             :   /// If a subclass installs an external buffer using SetBuffer then it can wait
      64             :   /// for a \see write_impl() call to handle the data which has been put into
      65             :   /// this buffer.
      66             :   char *OutBufStart, *OutBufEnd, *OutBufCur;
      67             : 
      68             :   enum BufferKind {
      69             :     Unbuffered = 0,
      70             :     InternalBuffer,
      71             :     ExternalBuffer
      72             :   } BufferMode;
      73             : 
      74             : public:
      75             :   // color order matches ANSI escape sequence, don't change
      76             :   enum Colors {
      77             :     BLACK = 0,
      78             :     RED,
      79             :     GREEN,
      80             :     YELLOW,
      81             :     BLUE,
      82             :     MAGENTA,
      83             :     CYAN,
      84             :     WHITE,
      85             :     SAVEDCOLOR
      86             :   };
      87             : 
      88             :   explicit raw_ostream(bool unbuffered = false)
      89    49124320 :       : BufferMode(unbuffered ? Unbuffered : InternalBuffer) {
      90             :     // Start out ready to flush.
      91    49124320 :     OutBufStart = OutBufEnd = OutBufCur = nullptr;
      92             :   }
      93             : 
      94             :   raw_ostream(const raw_ostream &) = delete;
      95             :   void operator=(const raw_ostream &) = delete;
      96             : 
      97             :   virtual ~raw_ostream();
      98             : 
      99             :   /// tell - Return the current offset with the file.
     100    26328805 :   uint64_t tell() const { return current_pos() + GetNumBytesInBuffer(); }
     101             : 
     102             :   //===--------------------------------------------------------------------===//
     103             :   // Configuration Interface
     104             :   //===--------------------------------------------------------------------===//
     105             : 
     106             :   /// Set the stream to be buffered, with an automatically determined buffer
     107             :   /// size.
     108             :   void SetBuffered();
     109             : 
     110             :   /// Set the stream to be buffered, using the specified buffer size.
     111     6182552 :   void SetBufferSize(size_t Size) {
     112             :     flush();
     113     6182552 :     SetBufferAndMode(new char[Size], Size, InternalBuffer);
     114     6182552 :   }
     115             : 
     116             :   size_t GetBufferSize() const {
     117             :     // If we're supposed to be buffered but haven't actually gotten around
     118             :     // to allocating the buffer yet, return the value that would be used.
     119      158185 :     if (BufferMode != Unbuffered && OutBufStart == nullptr)
     120       41312 :       return preferred_buffer_size();
     121             : 
     122             :     // Otherwise just return the size of the allocated buffer.
     123      116873 :     return OutBufEnd - OutBufStart;
     124             :   }
     125             : 
     126             :   /// Set the stream to be unbuffered. When unbuffered, the stream will flush
     127             :   /// after every write. This routine will also flush the buffer immediately
     128             :   /// when the stream is being set to unbuffered.
     129    42765384 :   void SetUnbuffered() {
     130             :     flush();
     131    42765384 :     SetBufferAndMode(nullptr, 0, Unbuffered);
     132    42765518 :   }
     133             : 
     134             :   size_t GetNumBytesInBuffer() const {
     135    16968151 :     return OutBufCur - OutBufStart;
     136             :   }
     137             : 
     138             :   //===--------------------------------------------------------------------===//
     139             :   // Data Output Interface
     140             :   //===--------------------------------------------------------------------===//
     141             : 
     142             :   void flush() {
     143    57138821 :     if (OutBufCur != OutBufStart)
     144     6114154 :       flush_nonempty();
     145             :   }
     146             : 
     147             :   raw_ostream &operator<<(char C) {
     148   288631054 :     if (OutBufCur >= OutBufEnd)
     149   122648570 :       return write(C);
     150   167771911 :     *OutBufCur++ = C;
     151             :     return *this;
     152             :   }
     153             : 
     154             :   raw_ostream &operator<<(unsigned char C) {
     155    10349509 :     if (OutBufCur >= OutBufEnd)
     156     1185624 :       return write(C);
     157     9163885 :     *OutBufCur++ = C;
     158             :     return *this;
     159             :   }
     160             : 
     161             :   raw_ostream &operator<<(signed char C) {
     162         124 :     if (OutBufCur >= OutBufEnd)
     163           0 :       return write(C);
     164         124 :     *OutBufCur++ = C;
     165             :     return *this;
     166             :   }
     167             : 
     168   411240283 :   raw_ostream &operator<<(StringRef Str) {
     169             :     // Inline fast path, particularly for strings with a known length.
     170             :     size_t Size = Str.size();
     171             : 
     172             :     // Make sure we can use the fast path.
     173   411240283 :     if (Size > (size_t)(OutBufEnd - OutBufCur))
     174   153646722 :       return write(Str.data(), Size);
     175             : 
     176   257593561 :     if (Size) {
     177   243834068 :       memcpy(OutBufCur, Str.data(), Size);
     178   243834068 :       OutBufCur += Size;
     179             :     }
     180             :     return *this;
     181             :   }
     182             : 
     183   224192520 :   raw_ostream &operator<<(const char *Str) {
     184             :     // Inline fast path, particularly for constant strings where a sufficiently
     185             :     // smart compiler will simplify strlen.
     186             : 
     187   224192520 :     return this->operator<<(StringRef(Str));
     188             :   }
     189             : 
     190             :   raw_ostream &operator<<(const std::string &Str) {
     191             :     // Avoid the fast path, it would only increase code size for a marginal win.
     192    67999425 :     return write(Str.data(), Str.length());
     193             :   }
     194             : 
     195             :   raw_ostream &operator<<(const SmallVectorImpl<char> &Str) {
     196    14628263 :     return write(Str.data(), Str.size());
     197             :   }
     198             : 
     199             :   raw_ostream &operator<<(unsigned long N);
     200             :   raw_ostream &operator<<(long N);
     201             :   raw_ostream &operator<<(unsigned long long N);
     202             :   raw_ostream &operator<<(long long N);
     203             :   raw_ostream &operator<<(const void *P);
     204             : 
     205             :   raw_ostream &operator<<(unsigned int N) {
     206    28597065 :     return this->operator<<(static_cast<unsigned long>(N));
     207             :   }
     208             : 
     209             :   raw_ostream &operator<<(int N) {
     210     7704930 :     return this->operator<<(static_cast<long>(N));
     211             :   }
     212             : 
     213             :   raw_ostream &operator<<(double N);
     214             : 
     215             :   /// Output \p N in hexadecimal, without any prefix or padding.
     216             :   raw_ostream &write_hex(unsigned long long N);
     217             : 
     218             :   /// Output a formatted UUID with dash separators.
     219             :   using uuid_t = uint8_t[16];
     220             :   raw_ostream &write_uuid(const uuid_t UUID);
     221             : 
     222             :   /// Output \p Str, turning '\\', '\t', '\n', '"', and anything that doesn't
     223             :   /// satisfy std::isprint into an escape sequence.
     224             :   raw_ostream &write_escaped(StringRef Str, bool UseHexEscapes = false);
     225             : 
     226             :   raw_ostream &write(unsigned char C);
     227             :   raw_ostream &write(const char *Ptr, size_t Size);
     228             : 
     229             :   // Formatted output, see the format() function in Support/Format.h.
     230             :   raw_ostream &operator<<(const format_object_base &Fmt);
     231             : 
     232             :   // Formatted output, see the leftJustify() function in Support/Format.h.
     233             :   raw_ostream &operator<<(const FormattedString &);
     234             : 
     235             :   // Formatted output, see the formatHex() function in Support/Format.h.
     236             :   raw_ostream &operator<<(const FormattedNumber &);
     237             : 
     238             :   // Formatted output, see the formatv() function in Support/FormatVariadic.h.
     239             :   raw_ostream &operator<<(const formatv_object_base &);
     240             : 
     241             :   // Formatted output, see the format_bytes() function in Support/Format.h.
     242             :   raw_ostream &operator<<(const FormattedBytes &);
     243             : 
     244             :   /// indent - Insert 'NumSpaces' spaces.
     245             :   raw_ostream &indent(unsigned NumSpaces);
     246             : 
     247             :   /// write_zeros - Insert 'NumZeros' nulls.
     248             :   raw_ostream &write_zeros(unsigned NumZeros);
     249             : 
     250             :   /// Changes the foreground color of text that will be output from this point
     251             :   /// forward.
     252             :   /// @param Color ANSI color to use, the special SAVEDCOLOR can be used to
     253             :   /// change only the bold attribute, and keep colors untouched
     254             :   /// @param Bold bold/brighter text, default false
     255             :   /// @param BG if true change the background, default: change foreground
     256             :   /// @returns itself so it can be used within << invocations
     257           0 :   virtual raw_ostream &changeColor(enum Colors Color,
     258             :                                    bool Bold = false,
     259             :                                    bool BG = false) {
     260             :     (void)Color;
     261             :     (void)Bold;
     262             :     (void)BG;
     263           0 :     return *this;
     264             :   }
     265             : 
     266             :   /// Resets the colors to terminal defaults. Call this when you are done
     267             :   /// outputting colored text, or before program exit.
     268           0 :   virtual raw_ostream &resetColor() { return *this; }
     269             : 
     270             :   /// Reverses the foreground and background colors.
     271           0 :   virtual raw_ostream &reverseColor() { return *this; }
     272             : 
     273             :   /// This function determines if this stream is connected to a "tty" or
     274             :   /// "console" window. That is, the output would be displayed to the user
     275             :   /// rather than being put on a pipe or stored in a file.
     276         390 :   virtual bool is_displayed() const { return false; }
     277             : 
     278             :   /// This function determines if this stream is displayed and supports colors.
     279         390 :   virtual bool has_colors() const { return is_displayed(); }
     280             : 
     281             :   //===--------------------------------------------------------------------===//
     282             :   // Subclass Interface
     283             :   //===--------------------------------------------------------------------===//
     284             : 
     285             : private:
     286             :   /// The is the piece of the class that is implemented by subclasses.  This
     287             :   /// writes the \p Size bytes starting at
     288             :   /// \p Ptr to the underlying stream.
     289             :   ///
     290             :   /// This function is guaranteed to only be called at a point at which it is
     291             :   /// safe for the subclass to install a new buffer via SetBuffer.
     292             :   ///
     293             :   /// \param Ptr The start of the data to be written. For buffered streams this
     294             :   /// is guaranteed to be the start of the buffer.
     295             :   ///
     296             :   /// \param Size The number of bytes to be written.
     297             :   ///
     298             :   /// \invariant { Size > 0 }
     299             :   virtual void write_impl(const char *Ptr, size_t Size) = 0;
     300             : 
     301             :   /// Return the current position within the stream, not counting the bytes
     302             :   /// currently in the buffer.
     303             :   virtual uint64_t current_pos() const = 0;
     304             : 
     305             : protected:
     306             :   /// Use the provided buffer as the raw_ostream buffer. This is intended for
     307             :   /// use only by subclasses which can arrange for the output to go directly
     308             :   /// into the desired output buffer, instead of being copied on each flush.
     309             :   void SetBuffer(char *BufferStart, size_t Size) {
     310             :     SetBufferAndMode(BufferStart, Size, ExternalBuffer);
     311             :   }
     312             : 
     313             :   /// Return an efficient buffer size for the underlying output mechanism.
     314             :   virtual size_t preferred_buffer_size() const;
     315             : 
     316             :   /// Return the beginning of the current stream buffer, or 0 if the stream is
     317             :   /// unbuffered.
     318             :   const char *getBufferStart() const { return OutBufStart; }
     319             : 
     320             :   //===--------------------------------------------------------------------===//
     321             :   // Private Interface
     322             :   //===--------------------------------------------------------------------===//
     323             : private:
     324             :   /// Install the given buffer and mode.
     325             :   void SetBufferAndMode(char *BufferStart, size_t Size, BufferKind Mode);
     326             : 
     327             :   /// Flush the current buffer, which is known to be non-empty. This outputs the
     328             :   /// currently buffered data and resets the buffer to empty.
     329             :   void flush_nonempty();
     330             : 
     331             :   /// Copy data into the buffer. Size must not be greater than the number of
     332             :   /// unused bytes in the buffer.
     333             :   void copy_to_buffer(const char *Ptr, size_t Size);
     334             : 
     335             :   virtual void anchor();
     336             : };
     337             : 
     338             : /// An abstract base class for streams implementations that also support a
     339             : /// pwrite operation. This is useful for code that can mostly stream out data,
     340             : /// but needs to patch in a header that needs to know the output size.
     341    43713379 : class raw_pwrite_stream : public raw_ostream {
     342             :   virtual void pwrite_impl(const char *Ptr, size_t Size, uint64_t Offset) = 0;
     343             :   void anchor() override;
     344             : 
     345             : public:
     346             :   explicit raw_pwrite_stream(bool Unbuffered = false)
     347             :       : raw_ostream(Unbuffered) {}
     348             :   void pwrite(const char *Ptr, size_t Size, uint64_t Offset) {
     349             : #ifndef NDBEBUG
     350       16235 :     uint64_t Pos = tell();
     351             :     // /dev/null always reports a pos of 0, so we cannot perform this check
     352             :     // in that case.
     353             :     if (Pos)
     354             :       assert(Size + Offset <= Pos && "We don't support extending the stream");
     355             : #endif
     356       16238 :     pwrite_impl(Ptr, Size, Offset);
     357             :   }
     358             : };
     359             : 
     360             : //===----------------------------------------------------------------------===//
     361             : // File Output Streams
     362             : //===----------------------------------------------------------------------===//
     363             : 
     364             : /// A raw_ostream that writes to a file descriptor.
     365             : ///
     366             : class raw_fd_ostream : public raw_pwrite_stream {
     367             :   int FD;
     368             :   bool ShouldClose;
     369             : 
     370             :   std::error_code EC;
     371             : 
     372             :   uint64_t pos;
     373             : 
     374             :   bool SupportsSeeking;
     375             : 
     376             :   /// See raw_ostream::write_impl.
     377             :   void write_impl(const char *Ptr, size_t Size) override;
     378             : 
     379             :   void pwrite_impl(const char *Ptr, size_t Size, uint64_t Offset) override;
     380             : 
     381             :   /// Return the current position within the stream, not counting the bytes
     382             :   /// currently in the buffer.
     383     5342290 :   uint64_t current_pos() const override { return pos; }
     384             : 
     385             :   /// Determine an efficient buffer size.
     386             :   size_t preferred_buffer_size() const override;
     387             : 
     388             :   /// Set the flag indicating that an output error has been encountered.
     389       16570 :   void error_detected(std::error_code EC) { this->EC = EC; }
     390             : 
     391             :   void anchor() override;
     392             : 
     393             : public:
     394             :   /// Open the specified file for writing. If an error occurs, information
     395             :   /// about the error is put into EC, and the stream should be immediately
     396             :   /// destroyed;
     397             :   /// \p Flags allows optional flags to control how the file will be opened.
     398             :   ///
     399             :   /// As a special case, if Filename is "-", then the stream will use
     400             :   /// STDOUT_FILENO instead of opening a file. This will not close the stdout
     401             :   /// descriptor.
     402             :   raw_fd_ostream(StringRef Filename, std::error_code &EC);
     403             :   raw_fd_ostream(StringRef Filename, std::error_code &EC,
     404             :                  sys::fs::CreationDisposition Disp);
     405             :   raw_fd_ostream(StringRef Filename, std::error_code &EC,
     406             :                  sys::fs::FileAccess Access);
     407             :   raw_fd_ostream(StringRef Filename, std::error_code &EC,
     408             :                  sys::fs::OpenFlags Flags);
     409             :   raw_fd_ostream(StringRef Filename, std::error_code &EC,
     410             :                  sys::fs::CreationDisposition Disp, sys::fs::FileAccess Access,
     411             :                  sys::fs::OpenFlags Flags);
     412             : 
     413             :   /// FD is the file descriptor that this writes to.  If ShouldClose is true,
     414             :   /// this closes the file when the stream is destroyed. If FD is for stdout or
     415             :   /// stderr, it will not be closed.
     416             :   raw_fd_ostream(int fd, bool shouldClose, bool unbuffered=false);
     417             : 
     418             :   ~raw_fd_ostream() override;
     419             : 
     420             :   /// Manually flush the stream and close the file. Note that this does not call
     421             :   /// fsync.
     422             :   void close();
     423             : 
     424             :   bool supportsSeeking() { return SupportsSeeking; }
     425             : 
     426             :   /// Flushes the stream and repositions the underlying file descriptor position
     427             :   /// to the offset specified from the beginning of the file.
     428             :   uint64_t seek(uint64_t off);
     429             : 
     430             :   raw_ostream &changeColor(enum Colors colors, bool bold=false,
     431             :                            bool bg=false) override;
     432             :   raw_ostream &resetColor() override;
     433             : 
     434             :   raw_ostream &reverseColor() override;
     435             : 
     436             :   bool is_displayed() const override;
     437             : 
     438             :   bool has_colors() const override;
     439             : 
     440             :   std::error_code error() const { return EC; }
     441             : 
     442             :   /// Return the value of the flag in this raw_fd_ostream indicating whether an
     443             :   /// output error has been encountered.
     444             :   /// This doesn't implicitly flush any pending output.  Also, it doesn't
     445             :   /// guarantee to detect all errors unless the stream has been closed.
     446      236014 :   bool has_error() const { return bool(EC); }
     447             : 
     448             :   /// Set the flag read by has_error() to false. If the error flag is set at the
     449             :   /// time when this raw_ostream's destructor is called, report_fatal_error is
     450             :   /// called to report the error. Use clear_error() after handling the error to
     451             :   /// avoid this behavior.
     452             :   ///
     453             :   ///   "Errors should never pass silently.
     454             :   ///    Unless explicitly silenced."
     455             :   ///      - from The Zen of Python, by Tim Peters
     456             :   ///
     457          10 :   void clear_error() { EC = std::error_code(); }
     458             : };
     459             : 
     460             : /// This returns a reference to a raw_ostream for standard output. Use it like:
     461             : /// outs() << "foo" << "bar";
     462             : raw_ostream &outs();
     463             : 
     464             : /// This returns a reference to a raw_ostream for standard error. Use it like:
     465             : /// errs() << "foo" << "bar";
     466             : raw_ostream &errs();
     467             : 
     468             : /// This returns a reference to a raw_ostream which simply discards output.
     469             : raw_ostream &nulls();
     470             : 
     471             : //===----------------------------------------------------------------------===//
     472             : // Output Stream Adaptors
     473             : //===----------------------------------------------------------------------===//
     474             : 
     475             : /// A raw_ostream that writes to an std::string.  This is a simple adaptor
     476             : /// class. This class does not encounter output errors.
     477             : class raw_string_ostream : public raw_ostream {
     478             :   std::string &OS;
     479             : 
     480             :   /// See raw_ostream::write_impl.
     481             :   void write_impl(const char *Ptr, size_t Size) override;
     482             : 
     483             :   /// Return the current position within the stream, not counting the bytes
     484             :   /// currently in the buffer.
     485       21112 :   uint64_t current_pos() const override { return OS.size(); }
     486             : 
     487             : public:
     488     4420997 :   explicit raw_string_ostream(std::string &O) : OS(O) {}
     489             :   ~raw_string_ostream() override;
     490             : 
     491             :   /// Flushes the stream contents to the target string and returns  the string's
     492             :   /// reference.
     493             :   std::string& str() {
     494         199 :     flush();
     495     1514399 :     return OS;
     496             :   }
     497             : };
     498             : 
     499             : /// A raw_ostream that writes to an SmallVector or SmallString.  This is a
     500             : /// simple adaptor class. This class does not encounter output errors.
     501             : /// raw_svector_ostream operates without a buffer, delegating all memory
     502             : /// management to the SmallString. Thus the SmallString is always up-to-date,
     503             : /// may be used directly and there is no need to call flush().
     504             : class raw_svector_ostream : public raw_pwrite_stream {
     505             :   SmallVectorImpl<char> &OS;
     506             : 
     507             :   /// See raw_ostream::write_impl.
     508             :   void write_impl(const char *Ptr, size_t Size) override;
     509             : 
     510             :   void pwrite_impl(const char *Ptr, size_t Size, uint64_t Offset) override;
     511             : 
     512             :   /// Return the current position within the stream.
     513             :   uint64_t current_pos() const override;
     514             : 
     515             : public:
     516             :   /// Construct a new raw_svector_ostream.
     517             :   ///
     518             :   /// \param O The vector to write to; this should generally have at least 128
     519             :   /// bytes free to avoid any extraneous memory overhead.
     520    85355310 :   explicit raw_svector_ostream(SmallVectorImpl<char> &O) : OS(O) {
     521    42677655 :     SetUnbuffered();
     522             :   }
     523             : 
     524    21566439 :   ~raw_svector_ostream() override = default;
     525             : 
     526             :   void flush() = delete;
     527             : 
     528             :   /// Return a StringRef for the vector contents.
     529             :   StringRef str() { return StringRef(OS.data(), OS.size()); }
     530             : };
     531             : 
     532             : /// A raw_ostream that discards all output.
     533             : class raw_null_ostream : public raw_pwrite_stream {
     534             :   /// See raw_ostream::write_impl.
     535             :   void write_impl(const char *Ptr, size_t size) override;
     536             :   void pwrite_impl(const char *Ptr, size_t Size, uint64_t Offset) override;
     537             : 
     538             :   /// Return the current position within the stream, not counting the bytes
     539             :   /// currently in the buffer.
     540             :   uint64_t current_pos() const override;
     541             : 
     542             : public:
     543      803351 :   explicit raw_null_ostream() = default;
     544             :   ~raw_null_ostream() override;
     545             : };
     546             : 
     547             : class buffer_ostream : public raw_svector_ostream {
     548             :   raw_ostream &OS;
     549             :   SmallVector<char, 0> Buffer;
     550             : 
     551             : public:
     552        5254 :   buffer_ostream(raw_ostream &OS) : raw_svector_ostream(Buffer), OS(OS) {}
     553       10424 :   ~buffer_ostream() override { OS << str(); }
     554             : };
     555             : 
     556             : } // end namespace llvm
     557             : 
     558             : #endif // LLVM_SUPPORT_RAW_OSTREAM_H

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